CN216508915U

CN216508915U - Inboard elevator with good water tightness

Info

Publication number: CN216508915U
Application number: CN202122740972.2U
Authority: CN
Inventors: 王海江; 胡凌; 李新献; 陈楚苗; 赵军勇; 陈世业; 陈嘉庆
Original assignee: South China Marine Machinery Co Ltd
Current assignee: South China Marine Machinery Co Ltd
Priority date: 2021-11-10
Filing date: 2021-11-10
Publication date: 2022-05-13
Anticipated expiration: 2031-11-10

Abstract

The utility model provides an inboard elevator with good water tightness, which comprises a hydraulic system for controlling the inboard elevator and an anti-falling mechanism for preventing the elevator from falling; the lifting machine comprises a platform component, a lifting driving mechanism for driving the platform component to lift and a turning plate arranged in a gap between a hatch opening on a deck of the ship body and the ship body, wherein the turning plate is used for filling the gap between the hatch opening and the deck; the anti-falling mechanism comprises a lock pin mechanism and a detection device; the anti-falling elevator has the advantages of safety, stability and anti-falling function.

Description

Inboard elevator with good water tightness

Technical Field

The utility model relates to the technical field of lifting platforms, in particular to an inboard elevator with good water tightness.

Background

The large ship with the transportation or loading function generally has a lifting platform arranged on a ship body due to the requirement of carrying, and the lifting platform generally used for cargo transportation is mainly a boom type platform. The lifting platform for airplane berthing and transferring is rarely found on large ships, and in the current large ships with airplane berthing, the airplane is usually berthed on a splint of a ship body, and the airplane needs to be considered to be collected in the ship body due to the limited area of the splint and the large risk of exposed berthing. In the prior art, the inboard elevator is generally hoisted by four points; the elevator has only two access directions; and the two directions are on the same straight line; when the airplane needs to enter the lifter, the airplane needs to move to the front or the back of the lifter; meanwhile, aligning the airplane body with the access passage; then the vehicle drives into the elevator; therefore, the occupied space is large when the airplane enters and exits the elevator; meanwhile, the elevator is hoisted by adopting four-point type, so that the airplane is prevented from colliding with a hoisting device when entering and exiting the lifting platform; a need to slow down; which in turn reduces the operating efficiency of the elevator.

Disclosure of Invention

The utility model provides an inboard elevator with good water tightness.

In order to achieve the purpose, the technical scheme of the utility model is as follows: an inboard lift with good water tightness comprises a hydraulic system for controlling the inboard lift and an anti-falling mechanism for preventing the lift from falling; the lifting machine comprises a platform assembly, a lifting driving mechanism for driving the platform assembly to lift and a turning plate arranged in a gap between a hatch on a deck of the ship body and the ship body, wherein the turning plate is used for filling the gap between the hatch and the deck; the anti-falling mechanism comprises a locking pin mechanism and a detection device.

The platform assembly comprises a lifting platform and a platform bracket; the lifting platform is connected with the platform bracket; the platform bracket comprises more than two rope winding wheel installation parts and more than two rope winding connection parts; the two rope winding wheel installation parts and the two rope winding connection parts are symmetrically arranged on the platform bracket; the two rope winding wheel mounting parts are close to one side of the platform bracket; the two rope winding connecting parts are close to the other side of the platform bracket and are positioned above the rope winding wheel mounting part; the lifting platform is used for driving the airplane to lift; the lifting platform is supported by the platform support.

The lifting driving mechanism comprises a lifting driving device, a rope winding wheel set and a lifting rope, and two end parts of the lifting rope are respectively connected with the platform assembly; the lifting rope is provided with two, and the interval winding is established on wiring wheelset and lift drive between two lifting ropes, and lift drive is used for driving the lifting rope and moves about on wiring wheelset to drive lift platform lift.

The detection device is arranged on one side of the lifting rope and comprises two first travel switches and two travel switches; the two first travel switches are arranged on one side of the platform assembly and are respectively abutted with the corresponding lifting ropes; the two second travel switches are arranged on the other side, opposite to the first travel switch, of the platform assembly, and the two second travel switches are respectively abutted with the corresponding lifting ropes; when a lifting rope is disconnected, the first travel switch or the second travel switch which is correspondingly abutted performs contact action and outputs a signal alarm.

The lock pin mechanism comprises a lock pin oil cylinder, a lock pin guide piece and a locking piece, wherein the lock pin oil cylinder is arranged on the edge of one side, close to the elevator, of each flat layer, the lock pin guide piece is arranged on one side of the lock pin oil cylinder, the lock pin guide piece is provided with a through groove arranged along the axis direction of the lock pin guide piece, the lock pin is movably arranged in the through groove of the lock pin guide piece, the output end of the lock pin oil cylinder is fixedly connected with one end of the lock pin, and the locking piece is respectively arranged on the edge of the lower side of the lifting platform; the locking piece is provided with a through hole matched with the lock pin, and the lock pin is driven to be inserted into the through hole of the locking piece through the extension of the lock pin oil cylinder, so that the lifting platform is locked.

The hydraulic system comprises a hydraulic pump station, a platform component driving system, a hatch cover system, a vehicle garage flat lock pin system, a flap system, an energy accumulator, a proportional speed regulating valve and a multi-way valve; the P ports of the proportional speed regulating valve and the multi-way valve are respectively connected with the P port of the hydraulic pump station; the T ports of the proportional speed regulating valve and the multi-way valve are respectively connected with the T port of the hydraulic pump station; the proportional speed regulating valve and the L port of the multi-way valve are respectively connected with the L port of the hydraulic pump station; an oil inlet and an oil outlet of the platform assembly driving system are respectively connected with the proportional speed regulating valve; an oil inlet and an oil outlet of the hatch cover system are respectively connected with the multi-way valve; an oil inlet and an oil outlet of the hangar flat-layer lock pin system are respectively connected with a multi-way valve; an oil inlet and an oil outlet of the garage flat bed lock pin system are respectively connected with a multi-way valve; an oil inlet and an oil outlet of the flap system are respectively connected with the multi-way valve.

An oil discharge port of the energy accumulator is connected with the multi-way valve, and an oil outlet of the multi-way valve is respectively connected with an oil inlet and an oil outlet of the platform assembly driving system; the port P of the energy accumulator is respectively connected with the port P of the proportional speed control valve and the port P of the multi-way valve, and the port T of the energy accumulator is respectively connected with the port T of the proportional speed control valve and the port T of the multi-way valve; the cabin cover system, the vehicle garage flat lock pin system, the garage flat lock pin system and the plate turnover system are respectively controlled by controlling the multi-way valve.

According to the arrangement, as the two lifting ropes are wound on the rope winding wheel set and the lifting driving device at intervals, when one lifting rope is disconnected, the first travel switch or the second travel switch which is correspondingly abutted performs contact action output signal alarm, and the platform assembly is driven to descend to the lowest position through the lifting driving device; when the lifting driving mechanism drives the lifting platform to be transferred from the current flat layer to another flat layer for loading or unloading equipment, goods and the like, the lock pin oil cylinder drives the lock pin to slide in the lock pin guide and insert the lock piece, so that the lifting platform and the current flat layer are fixedly connected with each other, and the lock pin mechanism can distribute part of pressure applied to the lifting platform to the current flat layer, so that the impact force on the lifting driving mechanism during loading the equipment and the goods is reduced, and meanwhile, the load of the lifting driving mechanism can be reduced; after the loading or unloading action is finished, the lock pin oil cylinder contracts and drives the lock pin to be separated from the locking piece, so that the fixed connection between the lifting platform and the current flat layer is released; then the lifting driving mechanism drives the lifting platform to another flat layer; therefore, the stability of the lifting platform during loading can be improved through the lock pin mechanism, the impact on the lifting driving mechanism during loading is reduced, and the service life of the lifting driving mechanism and the safety of the lifter are further prolonged; in addition, the lifting rope can be detected through the first travel switch or the second travel switch, when the lifting rope is disconnected, an alarm can be sent out in time, and safety is further improved.

When the platform assembly needs to be controlled to lift, the platform assembly can be driven to lift by controlling the flow direction of hydraulic oil of the proportional speed regulating valve; when the platform assembly reaches a machine garage leveling layer or a garage leveling layer, the multi-way valve adjusts the oil outlet to output hydraulic oil to the lock pin system corresponding to the leveling layer where the platform assembly is currently located according to the current leveling layer position of the platform assembly, so that the lock pin system of the current leveling layer locks the platform assembly, and the safety of the platform assembly is improved; after the platform assembly is loaded on the current flat layer, the locking pin system of the current flat layer is controlled by the multi-way valve to unlock the platform assembly, and the platform assembly is driven to the next target flat layer by the proportional speed regulating valve, so that the platform assembly safely finishes the loading of goods; when the platform assembly needs to ascend to a deck for operation, the hatch cover is opened through the multi-way valve control hatch cover system, then the oil outlet is adjusted through the multi-way valve, the plate turning system is enabled to obtain oil, the turning plate is driven to be opened, the platform assembly ascends to the outside of the hatch cover through the proportional speed control valve, and at the moment, the platform assembly is locked through the multi-way valve control cabin leveling lock pin system; after the platform assembly finishes the operation on the deck, the multi-way valve controls the hangar flat lock pin system to unlock the platform assembly, the platform assembly is controlled to descend through the proportional speed regulating valve, and then the turning plate and the hatch cover are sequentially folded through the multi-way valve; thus, the hull deck and the platform assembly are connected through the turning plate; the influence of the clearance between the ship deck and the platform assembly on the entrance and exit of the airplane on the platform assembly is avoided; the stability of the airplane entering and exiting on the platform assembly is improved; when hydraulic power unit broke down, accessible multiple valve regulation energy storage ware station output hydraulic oil, as emergent power to platform subassembly actuating system output hydraulic oil, accomplished emergency operation, further improved the security of inboard lift.

Drawings

Fig. 1 is a schematic view of the structure of the present invention installed on a deck.

FIG. 2 is a schematic side view of the present invention.

Fig. 3 is a schematic perspective view of the platform assembly, the lifting guide device and the lifting driving mechanism according to the present invention.

Fig. 4 is a schematic structural view of the lifting drive mechanism of the present invention without the sixth, seventh and eighth rope pulleys.

Fig. 5 is a practical state diagram of the lifting drive mechanism of the present invention without the sixth, seventh and eighth wrap wheels.

Fig. 6 is a top view of the present invention.

Fig. 7 is a partially enlarged schematic view of a portion a of fig. 2.

Fig. 8 is a partially enlarged schematic view of a portion B in fig. 6.

Fig. 9 is a hydraulic schematic block diagram of the present invention.

Fig. 10 is a hydraulic schematic of the platform assembly drive system of the present invention.

Fig. 11 is a hydraulic schematic of the hatch cover system of the present invention.

FIG. 12 is a hydraulic schematic of the latch system of the present invention.

Fig. 13 is a hydraulic schematic diagram of the flap system of the present invention.

Reference numerals: 1. a hatch assembly; 11. a cover plate; 12. a hatch drive; 21. a lifting platform; 22. a platform support; 23. a rope winding wheel mounting part; 24. a rope winding connection part; 3. a lifting drive mechanism; 31. a lift drive; 311. a drive section; 312. a fixed end; 32. a rope winding wheel set; 33. a lifting rope; 321. a first rope winding wheel; 322. a second rope winding wheel; 323. a third rope winding wheel; 324. a fourth rope winding wheel; 325. a rope winding wheel V; 326. a rope winding wheel six; 327. a rope winding wheel seven; 328. an eighth rope winding wheel; 4. a lifting guide device; 41. a lifting guide rail assembly; 411. a first lifting guide rail; 412. a second lifting guide rail; 413. a slide rail; 42. a lifting guide; 43. a guide wheel bracket; 44. a sheave assembly; 45. a first auxiliary wheel; 46. a second auxiliary wheel; 51. a first travel switch; 52. two travel switches; 61. a lock pin oil cylinder; 62. a lock pin; 63. a latch guide; 64. a locking member; 65. a lock pin travel switch; 71. a hangar deck; 72. a vehicle garage deck; 73. a bottom deck; 8. and (4) turning over the plate.

1a, a platform assembly driving system; 111a, a first lifting driving oil cylinder; 112a and a second lifting driving oil cylinder; 121a, a first lifting reversing valve; 122a, a second lifting reversing valve; 131a, a first counter-balance valve; 132a, a second counter balance valve; 133a, a third counter balance valve; 134a, a fourth counter balance valve; 141a, a first one-way throttle valve; 142a, a second one-way throttle valve; 143a, a third one-way throttle valve; 144a, a fourth one-way throttle valve; 145a and an emergency operation oil path; 2a, a hatch cover system; 211a, a first hatch cylinder; 212a, a second hatch cylinder; 221a, a first hatch balance valve; 222a, a second hatch balancing valve; 223a, a third deck lid balancing valve; 224a, a fourth hatch balancing valve; 3a, a lock pin driving system; 31a, a lock pin oil cylinder; 32a, a first lock pin one-way throttle valve; 33a, a second lock pin one-way throttle valve; 41a, a first flap cylinder; 411a, a first flap balance valve; 412a, a first two-flap balance valve; 42a, a second plate turnover oil cylinder; 421a, a second flap balance valve; 422a and a second flap balance valve; 5a, an energy accumulator; 6a, a platform assembly self-weight balance system.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1 to 13, a watertight inboard lift includes a hydraulic system for controlling the inboard lift and a drop-preventing mechanism for preventing the lift from dropping; the elevator comprises a hatch cover assembly 1, a platform assembly 2, a lifting driving mechanism 3 for driving the platform assembly 2 to lift, a lifting guide device 4 and a turning plate 8 arranged in a gap between a hatch on a ship body hangar deck 71 and a ship body, wherein the turning plate 8 is used for filling the gap between the hatch and the hangar deck 71; the anti-falling mechanism comprises a lock pin mechanism and a detection device; the elevator is applied to a ship body.

The platform assembly 2 comprises a lifting platform 21 and a platform bracket 22; the lifting platform 21 is connected with the platform bracket 22; the platform bracket 22 includes two or more rope winding wheel mounting parts 23 and two or more rope winding connecting parts 24; the two rope winding wheel installation parts 23 and the two rope winding connection parts 24 are symmetrically arranged on the platform bracket 22; one side of the two rope winding wheel installation parts 23 close to the platform bracket 22; the two rope winding connecting parts 24 are close to the other side of the platform bracket 22, and the rope winding connecting parts 24 are positioned above the rope winding wheel mounting part 23; the lifting platform 21 is used for driving the airplane to lift; the platform bracket 22 is used for supporting the lifting platform 21; the supporting effect is improved.

The lifting driving device 31 drives the platform assembly 2 to lift, so that the platform assembly 2 moves between different clamping plate layers of the ship body; the lifting driving device 31 is connected with one side of the platform component 2; the lifting driving device 31 is connected with the platform component 2 in a cantilever manner; when the airplane needs to be transported, the lifting driving device drives the platform assembly 2 to lift up on an upper deck of the ship body, and the platform assembly 2 is lifted up and down through the lifting driving device on one side, so that the airplane can better enter the suspension device from the length direction without arranging suspension ropes in four point directions like a four-point suspension type, and the structure can enter the platform assembly from the left and right directions or the front three directions of the platform assembly 2, so that the airplane occupies a small peripheral space of the ship body when entering and exiting the platform assembly 2; meanwhile, the risk of collision with the lifting driving device 31 when the airplane enters and exits the platform assembly 2 can be reduced; because the length of lift cord 33 is constant; when the lifting driving device 31 drives the second rope winding wheel 322 to move away from the first rope winding wheel 321; the second rope winding wheel 322 drives the lifting rope 33 wound on the rope winding wheel group 32 to move; according to the principle of pulleys; the lifting rope 33 drives the lifting driving device 31 to move away from the lifting driving device 31, so that the lifting rope 33 drives the platform assembly 2 to move upwards; when the lifting driving device 31 drives the second rope winding wheel 322 to move close to the first rope winding wheel 321; because the length of lift cord 33 is constant; at this time, the second rope winding wheel 322 and the lifting rope 33 are in a loose state; at this time the platform assembly 2 moves downwardly under the influence of gravity.

The bottom of the platform is also provided with a damping spring (not shown in the figure); thus, when both lift cords 33 connected to lift platform 21 are disconnected, the free fall of lift platform 21 falls and the damping springs provide cushioning for lift platform 21, minimizing damage to the platform assembly and the cargo or equipment on lift platform 21.

The lifting driving mechanism 3 comprises a lifting driving device 31, a rope winding wheel group 32 and a lifting rope 33; the rope winding wheel group 32 comprises a rope winding wheel I321, a rope winding wheel II 322, a rope winding wheel III 323, a rope winding wheel IV 324, a rope winding wheel V325, a rope winding wheel VI 326, a rope winding wheel VII 327 and a rope winding wheel VIII 328; two of the rope winding wheel five 325, two of the rope winding wheel six 326, two of the rope winding wheel seven 327 and two of the rope winding wheels eight 328 are arranged; two wrap sheaves five 325, two wrap sheaves six 326, two wrap sheaves seven 327, and two wrap sheaves eight 328 are all symmetrically disposed about the platform assembly 2.

A rope winding wheel seven 327 is arranged on the platform assembly; the lifting driving device 31 is provided with a driving end 311 and a fixed end 312; the first rope winding wheel 321 is arranged at the fixed end 312; the second rope winding wheel 322 is arranged at the driving end 311; the third rope winding wheel 323 and the fourth rope winding wheel 324 are sequentially arranged between the fifth rope winding wheel 325 and the second rope winding wheel 322; the two ends of the lifting rope 33 are respectively connected with the platform assembly; the two lifting ropes 33 are arranged, and the two lifting ropes 33 are wound on a rope wheel seven, a rope winding wheel six 326, a rope winding wheel five 325, a rope winding wheel one 321, a rope winding wheel two 322, a rope winding wheel three 323, a rope winding wheel four 324, another rope winding wheel five 325, another rope winding wheel six 326 and another rope winding wheel seven 327 at intervals; the lifting driving device 31 drives the rope pulley seven to reciprocate between the rope winding pulley five 325 and the rope winding pulley six 326 by driving the rope pulley two; by arranging a rope winding wheel eight 328; the tensioning effect of the rope winding wheel group 32 on the lifting rope 33 is improved; thus, the rope winding wheel group 32 drives the platform component 2 to move with good control effect. The installation of the rope winding wheel seven 327 is realized by arranging the rope winding wheel installation part 23; the lifting rope 33 is connected through the rope winding connection part 26; sliding friction is generated between the lifting rope 33 and the rope winding wheel seven 327 so as to realize the lifting of the platform assembly 2.

In the present embodiment, the two first stroke switches 51 are provided between the fifth and sixth rope pulleys 325 and 326, respectively, and abut against the lifting rope 33.

The lifting guide rail assembly 41 comprises a first lifting guide rail 411 and a second lifting guide rail 412; a sliding rail 413 is arranged between the first lifting guide rail 411 and the second lifting guide rail 412; the first lifting guide rail 411, the second lifting guide rail 412 and the sliding rail 413 are arranged vertically; the lifting guide wheel set comprises a guide wheel bracket 43, a pulley assembly 44, an auxiliary wheel I45 and an auxiliary wheel II 46, wherein the pulley assembly 44, the auxiliary wheel I45 and the auxiliary wheel II are arranged on the guide wheel bracket 43; the pulley assembly 44 is slidably disposed on the sliding rail 413; the first auxiliary wheel 45 is arranged on the side edge of the first lifting guide rail 411 in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly; the second auxiliary wheel 46 is arranged on the side edge of the second lifting guide rail 412 in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly; thus, the sliding effect is good.

Two lifting guide devices 4 are arranged; the two lifting guide devices 4 are connected with the platform component 2; the two lifting guide devices 4 are close to one side of the platform component 2 connected with the rope winding wheel seven 327; and is positioned between the two rope winding wheels seven 327; the elevation guide device 4 includes an elevation guide rail assembly 41 and an elevation guide 42; the platform assembly 2 is connected with the lifting guide 42; the lifting guide 42 is provided with a lifting guide wheel set; the lifting guide wheel set is slidably arranged on the lifting guide rail assembly 41. By arranging the lifting guide device 4; the platform assembly 2 moves along the guiding direction of the lifting guiding device 4; therefore, the platform component 2 has good stability when being lifted; meanwhile, the two lifting guide devices 4 are close to one side of the platform assembly connected with the rope winding wheel seven 327; the lifting guide 4 is thus also cantilevered to the platform assembly 2.

The lifting guide rail assembly 41 comprises a first lifting guide rail 411 and a second lifting guide rail 412; a sliding rail 413 is arranged between the first lifting guide rail 411 and the second lifting guide rail 412; the first lifting guide rail 411, the second lifting guide rail 412 and the sliding rail 413 are arranged vertically; the lifting guide wheel set comprises a guide wheel bracket 43, a pulley assembly 44, an auxiliary wheel I45 and an auxiliary wheel II 46, wherein the pulley assembly 44, the auxiliary wheel I45 and the auxiliary wheel II are arranged on the guide wheel bracket 43; the pulley assembly 44 is slidably disposed on the sliding rail 413; the first auxiliary wheel 45 is arranged on the side edge of the first lifting guide rail 411 in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly; the second auxiliary wheel 46 is slidably disposed on the side edge of the second lifting guide rail 412, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly. Thus, the sliding effect is good.

The lock pin mechanism comprises a lock pin oil cylinder 61, a lock pin 62, a lock pin guide 63 and a locking piece 64, the lock pin oil cylinder 61 is respectively arranged on the edges of a garage deck 71, the garage deck and a bottom deck close to the lifter, the lock pin guide 63 is arranged on one side of the lock pin oil cylinder 61, the lock pin guide 63 is provided with a through groove arranged along the axial direction of the lock pin guide, the lock pin 62 is movably arranged in the through groove of the lock pin guide 63, the output end of the lock pin oil cylinder 61 is fixedly connected with one end of the lock pin 62, and the locking piece 64 is respectively arranged on the edge of the lower side of the lifting platform 21; a through hole matched with the lock pin 62 is formed in the locking piece 64, the lock pin 62 is driven to be inserted into the through hole of the locking piece 64 through the extension of the lock pin oil cylinder 61, and the lock pin 62 mechanism realizes the locking of the lifting platform 21;

the lock pin 62 is also provided with a lock pin travel switch 65, and after the lock pin 62 is inserted into the locking piece 64, the lock pin travel switch 65 is in contact action to output a signal; thus, it is possible to monitor in real time whether each lock pin 62 is inserted into the locking member 64, thereby improving safety.

The detection device is arranged on one side of the lifting rope 33 and comprises two first travel switches 51 and two travel switches 52; the two first travel switches 51 are arranged on one side of the platform assembly, and the two first travel switches 51 are respectively abutted with the corresponding lifting ropes 33; the two second travel switches are arranged on the other side of the platform assembly relative to the first travel switch 51 and are respectively abutted with the corresponding lifting ropes 33; when a lifting rope 33 is disconnected, the first travel switch 51 or the second travel switch which is correspondingly abutted performs contact action and outputs a signal alarm;

according to the arrangement, when the lifting driving mechanism 3 drives the lifting platform 21 to be transferred from the current flat layer to another flat layer for loading or unloading equipment, goods and the like, the lock pin oil cylinder 61 drives the lock pin 62 to slide in the lock pin guide 63 and insert the lock piece 64, so that the lifting platform 21 and the flat layer where the lifting platform is located are fixedly connected with each other, and the lock pin 62 mechanism can distribute a part of pressure applied to the lifting platform 21 to the flat layer where the lifting platform is located, so that the impact force on the lifting driving mechanism 3 during loading the equipment and the goods is reduced, and meanwhile, the load of the lifting driving mechanism 3 can be reduced; after the loading or unloading action is finished, the lock pin oil cylinder 61 is contracted to drive the lock pin 62 to be separated from the locking piece 64, so that the fixed connection between the lifting platform 21 and the currently positioned flat layer is released; then the lifting driving mechanism 3 drives the lifting platform 21 to another flat layer; therefore, the stability of the lifting platform 21 during loading can be improved through the lock pin 62 mechanism, the impact on the lifting driving mechanism 3 during loading is reduced, and the service life of the lifting driving mechanism 3 and the safety of the lifter are further prolonged; in addition, the lifting ropes 33 can be detected through the first travel switch 51 or the second travel switch, because the two lifting ropes 33 are wound on the rope winding wheel set 32 and the lifting driving device 31 at intervals, when one lifting rope 33 is disconnected, the first travel switch 51 or the second travel switch which is correspondingly abutted performs contact action output signal alarm, and the platform assembly is driven to descend to the lowest position through the lifting driving device 31; further improved safety.

The hydraulic system comprises a hydraulic pump station, a platform component driving system 1a, a hatch cover system 2a, a vehicle garage flat lock pin system, a flap system, an energy accumulator 5a, a proportional speed regulating valve and a multi-way valve; the P ports of the proportional speed regulating valve and the multi-way valve are respectively connected with the P port of the hydraulic pump station; the T ports of the proportional speed regulating valve and the multi-way valve are respectively connected with the T port of the hydraulic pump station; the proportional speed regulating valve and the L port of the multi-way valve are respectively connected with the L port of the hydraulic pump station; an oil inlet and an oil outlet of the platform component driving system 1a are respectively connected with a proportional speed regulating valve; an oil inlet and an oil outlet of the hatch cover system 2a are respectively connected with the multi-way valve; an oil inlet and an oil outlet of the hangar flat-layer lock pin system are respectively connected with a multi-way valve; an oil inlet and an oil outlet of the garage flat bed lock pin system are respectively connected with a multi-way valve; an oil inlet and an oil outlet of the flap system are respectively connected with the multi-way valve.

An oil discharge port of the energy accumulator 5a is connected with the multi-way valve, and an oil outlet of the multi-way valve is respectively connected with an oil inlet and an oil outlet of the platform assembly driving system 1 a; the port P of the energy accumulator 5a is respectively connected with the port P of the proportional speed regulating valve and the port P of the multi-way valve, and the port T of the energy accumulator 5a is respectively connected with the port T of the proportional speed regulating valve and the port T of the multi-way valve; the hatch cover system 2a, the vehicle garage flat lock pin system, the garage flat lock pin system and the flap system are respectively controlled by controlling the multi-way valve.

According to the arrangement, when the platform assembly needs to be controlled to lift, the platform assembly can be driven to lift by controlling the flow direction of the hydraulic oil of the proportional speed regulating valve; when the platform assembly reaches a machine garage leveling layer or a garage leveling layer, the multi-way valve adjusts the oil outlet to output hydraulic oil to the lock pin system corresponding to the leveling layer where the platform assembly is currently located according to the current leveling layer position of the platform assembly, so that the lock pin system of the current leveling layer locks the platform assembly, and the safety of the platform assembly is improved; after the platform assembly is loaded on the current flat layer, the locking pin system of the current flat layer is controlled by the multi-way valve to unlock the platform assembly, and the platform assembly is driven to the next target flat layer by the proportional speed regulating valve, so that the platform assembly safely finishes the loading of goods; when the platform assembly needs to ascend to a deck for operation, the hatch cover is opened through the multi-way valve control hatch cover system 2a, then the oil outlet is adjusted through the multi-way valve, the flap system is enabled to obtain oil, the flap is driven to be opened, the platform assembly ascends out of the hatch cover through the proportional speed control valve, and at the moment, the platform assembly is locked through the multi-way valve control cabin leveling lock pin system; after the platform assembly finishes the operation on the deck, the multi-way valve controls the hangar flat lock pin system to unlock the platform assembly, the platform assembly is controlled to descend through the proportional speed regulating valve, and then the turning plate and the hatch cover are sequentially folded through the multi-way valve; thus, the hull deck and the platform assembly are connected through the turning plate; the influence of the clearance between the ship deck and the platform assembly on the entrance and exit of the airplane on the platform assembly is avoided; the stability of the airplane entering and exiting on the platform assembly is improved; when a hydraulic pump station breaks down, hydraulic oil can be output from the energy accumulator 5a through the multi-way valve and used as emergency power to output the hydraulic oil to the platform assembly driving system 1a, emergency operation is completed, and safety of the inboard elevator is further improved.

Platform assembly drive system 1a includes a first lift drive cylinder 111a, a second lift drive cylinder 112a, a first lift direction valve 121a, a second lift direction valve 122a, a first counter valve 131a, a second counter valve 132a, a third counter valve 133a, and a fourth counter valve 134 a; a P port of the first lifting reversing valve 121a is connected with an oil outlet of the proportional speed regulating valve, and a T port of the first lifting reversing valve 121a is connected with an oil return port of the proportional speed regulating valve; the port a of the first elevation reversing valve 121a is connected to the port a of the first balance valve 131a, and the port B of the first elevation reversing valve 121a is connected to the port a of the second balance valve 132 a; a port B of the first balance valve 131a is connected with an oil inlet of the first lifting driving oil cylinder 111a, and a port B of the second balance valve 132a is connected with an oil return port of the first lifting driving oil cylinder 111 a; a P port of the second lifting reversing valve 122a is connected with an oil outlet of the proportional speed regulating valve, and a T port of the second lifting reversing valve 122a is connected with an oil return port of the proportional speed regulating valve; the port a of the second up-down switching valve 122a is connected to the port a of the third balance valve 133a, and the port B of the second up-down switching valve 122a is connected to the port a of the fourth balance valve 134 a; the port B of the third balance valve 133a is connected to the oil inlet of the second lift driving cylinder 112a, and the port B of the fourth balance valve 134a is connected to the oil return port of the second lift driving cylinder 112 a.

According to the arrangement, when the driving platform assembly ascends, the first lifting reversing valve 121a and the second lifting reversing valve 122a are controlled to reverse, so that the port P of the first lifting reversing valve 121a is communicated with the port B, and the port P of the second lifting reversing valve 122a is communicated with the port B; thus, the hydraulic oil enters the first lift driving cylinder 111a from the port a of the second balance valve 132a after passing through the first lift switching valve 121a, and enters the second lift driving cylinder 112a from the port a of the fourth balance valve 134a after passing through the second lift switching valve 122a, so that the first lift driving cylinder 111a and the second lift driving cylinder 112a extend out to drive the platform assembly to ascend; when the driving platform assembly ascends, controlling the first lifting reversing valve 121a and the second lifting reversing valve 122a to reverse, so that the port P of the first lifting reversing valve 121a is communicated with the port A, and the port P of the second lifting reversing valve 122a is communicated with the port A; thus, the hydraulic oil enters the first lift driving cylinder 111a from the port a of the first balance valve 131a after passing through the first lift switching valve 121a, and enters the second lift driving cylinder 112a from the port a of the third balance valve 133a after passing through the second lift switching valve 122a, so that the first lift driving cylinder 111a and the second lift driving cylinder 112a are contracted to drive the platform assembly to descend.

A first one-way throttle valve 141a is connected between the control oil port of the first balance valve 131a and the port a of the second balance valve 132a, the oil inlet of the first one-way throttle valve 141a is connected with the control oil port of the first balance valve 131a, and the oil outlet of the first one-way throttle valve 141a is connected with the port a of the second balance valve 132 a; a second one-way throttle valve 142a is connected between the control oil port of the second balance valve 132a and the port a of the first balance valve 131a, the oil inlet of the second one-way throttle valve 142a is connected with the control oil port of the second balance valve 132a, and the oil outlet of the second one-way throttle valve 142a is connected with the port a of the first balance valve 131 a; a third one-way throttle valve 143a is connected between the control oil port of the third balanced valve 133a and the port a of the fourth balanced valve 134a, the oil inlet of the third one-way throttle valve 143a is connected with the control oil port of the third balanced valve 133a, and the oil outlet of the third one-way throttle valve 143a is connected with the port a of the fourth balanced valve 134 a; a fourth one-way throttle valve 144a is connected between the control oil port of the fourth balanced valve 134a and the port a of the third balanced valve 133a, the oil inlet of the fourth one-way throttle valve 144a is connected with the control oil port of the fourth balanced valve 134a, and the oil outlet of the fourth one-way throttle valve 144a is connected with the port a of the third balanced valve 133 a.

According to the arrangement, when the platform assembly ascends, hydraulic oil in the first lifting driving oil cylinder enters the first balance valve 131a from the oil inlet and flows out from the port A of the first balance valve 131 a; when the hydraulic oil enters the oil return port of the first lifting driving oil cylinder through the second balance valve 132a, the second balance valve 132a conveys the hydraulic oil to the control oil port of the first balance valve 131a, and the hydraulic oil is regulated by the first one-way throttle valve 141a, so that the overflow valve of the first balance valve 131a is opened, the hydraulic oil on one side of the oil inlet of the first lifting driving oil cylinder is improved, and the working efficiency of the first lifting driving oil cylinder is improved; similarly, the hydraulic oil in the second lift driving cylinder 112a enters the third balance valve 133a from the oil inlet, and flows out from the port a of the third balance valve 133 a; when the hydraulic oil enters the oil return port of the second lift driving cylinder 112a through the fourth balance valve 134a, the fourth balance valve 134a conveys the hydraulic oil to the control oil port of the third balance valve 133a, and the hydraulic oil is regulated by the third one-way throttle valve 143a, so that the overflow valve of the third balance valve 133a is opened, the flow of the hydraulic oil on one side of the oil return port of the first lift driving cylinder is increased, and the working efficiency of the first lift driving cylinder is increased.

When the platform assembly descends, hydraulic oil in the first lifting driving oil cylinder enters the second balance valve 132a from an oil return port and flows out from the port A of the second balance valve 132 a; when hydraulic oil enters the oil inlet of the first lifting drive oil cylinder through the first balance valve 131a, the first balance valve 131a conveys the hydraulic oil to the control oil port of the second balance valve 132a, and the hydraulic oil is regulated by the second one-way throttle valve 142a, so that the overflow valve of the second balance valve 132a is opened, the flow of the hydraulic oil on one side of the oil return port of the first lifting drive oil cylinder is increased, and the working efficiency of the second lifting drive oil cylinder 112a is increased; similarly, the hydraulic oil in the second lift drive cylinder 112a enters the fourth balanced valve 134a from the oil return port, and flows out from the port a of the fourth balanced valve 134 a; when the hydraulic oil enters the oil inlet of the second lift driving cylinder 112a through the third balance valve 133a, the third balance valve 134a conveys the hydraulic oil to the control oil port of the fourth balance valve 133a, and the hydraulic oil is regulated by the fourth one-way throttle valve 142a, so that the overflow valve of the fourth balance valve 134a is opened, the flow of the hydraulic oil on one side of the oil return port of the first lift driving cylinder is increased, and the working efficiency of the first lift driving cylinder is increased.

The hatch system 2a comprises a first hatch cylinder 211a, a second hatch cylinder 212a, a first hatch balance valve 221a, a second hatch balance valve 222a, a third hatch balance valve 223a and a fourth hatch balance valve 224 a; the port A of the first hatch cover balance valve 221a and the port A of the third hatch cover balance valve 223a are connected with the oil outlet of the multi-way valve in parallel; the port A of the second hatch balance valve 222a and the port A of the fourth hatch balance valve 224a are connected in parallel with the oil outlet of the multi-way valve; the port B of the first hatch balance valve 221a is connected with an oil inlet of the first hatch cylinder 211a, and the port B of the second hatch balance valve 222a is connected with an oil return port of the first hatch cylinder 211 a; the port B of the third hatch balance valve 223a is connected with an oil inlet of the second hatch cylinder 212a, and the port B of the fourth hatch balance valve 224a is connected with an oil return port of the second hatch cylinder 212 a; according to the arrangement, when the hatch is opened, hydraulic oil in the hydraulic cylinder of the first lifting driving hatch hydraulic cylinder enters the first hatch balance valve 221a from the oil inlet and flows out from the port A of the first hatch balance valve 221 a; when the hydraulic oil enters the oil return port of the first hatch lifting drive cylinder through the second balance valve 132a, the second hatch balance valve 222a conveys the hydraulic oil to the control oil port of the first hatch balance valve 221a, so that the overflow valve of the first hatch balance valve 221a is opened, the hydraulic oil on one side of the oil inlet of the first lifting drive hydraulic cap cylinder is improved, and the working efficiency of the first hatch lifting drive hydraulic cylinder is improved; similarly, the hydraulic oil in the second hatch cover oil lifting driving hydraulic cylinder enters the third balance valve 133a from the oil inlet and flows out from the port A of the third balance valve 133 a; when hydraulic oil enters an oil return opening of the second hatch cover lifting driving oil cylinder through the fourth balance valve 134a, the fourth balance valve 134a conveys the hydraulic oil to a control oil opening of the third balance valve 133a, so that an overflow valve of the third balance valve 133a is opened, the flow of the hydraulic oil on one side of an oil return opening of the first and second hatch cover lifting driving hydraulic cylinder is improved, and the working efficiency of the first and second hatch cover lifting driving hydraulic cylinder is improved.

When the hatch is closed, the hydraulic oil in the first hatch oil cylinder 211a enters the first second hatch balance valve from the oil inlet and return port and flows out from the port A of the first second hatch balance valve; when the hydraulic oil enters the oil return inlet of the first hatch cover oil cylinder 211a through the second balance valve, the second hatch cover balance valve conveys the hydraulic oil to the control oil port of the first second hatch cover balance valve, so that the overflow valve of the first second hatch cover balance valve is opened, the hydraulic oil on the side of the oil inlet and return inlet of the first hatch cover oil cylinder 211a is improved, and the working efficiency of the first hatch cover oil cylinder 211a is improved; similarly, the hydraulic oil in the second hatch cylinder 212a enters the fourth third balance valve from the oil inlet/return port and flows out from the port a of the third fourth balance valve; when hydraulic oil enters the oil return inlet of the second hatch cover oil cylinder 212a through the fourth third balance valve, the fourth third balance valve conveys the hydraulic oil to the control oil port of the third fourth balance valve, so that the overflow valve of the third fourth balance valve is opened, the flow of the hydraulic oil on one side of the oil return inlet of the first and second hatch cover oil cylinders is increased, and the working efficiency of the first and second hatch cover oil cylinders is increased.

The vehicle garage flat lock pin system and the hangar flat lock pin system respectively comprise a lock pin driving system 3a, in the embodiment, the lock pin driving system 3a comprises more than two seven lock pin oil cylinders 31a which are arranged in parallel, and an oil inlet and an oil return port of each lock pin oil cylinder 31a are respectively connected with a first lock pin one-way throttle valve 32a and a second lock pin one-way throttle valve 33 a; the port A of the first lock pin one-way throttle valve 32a is connected with an oil outlet of the multi-way valve, and the port B of the first lock pin one-way throttle valve 32a is connected with an oil inlet of the lock pin oil cylinder 31 a; the port A of the second lockpin one-way throttle valve 33a is connected with an oil return port of the multi-way valve, and the port B of the first lockpin one-way throttle valve 32a is connected with an oil return port of the lockpin oil cylinder 31 a; with the above arrangement, the speed of the latch cylinder 31a can be adjusted by adjusting the first and second one-way throttle valves 141a and 142 a.

The flap system comprises two first flap cylinders 41a and two second flap cylinders 42 a; an oil inlet of each first flap oil cylinder 41a is connected with a first flap balance valve 411a, and an oil outlet of each first flap oil cylinder 41a is connected with a first second flap balance valve 412 a.

The port A of the first flap balance valve 411a is connected with the oil outlet of the multi-way valve, and the port B of the first flap balance valve 411a is connected with the oil inlet of the first flap cylinder 41 a; the port A of the first two-flap balance valve 412a is connected with an oil return port of the multi-way valve, and the port B of the first two-flap balance valve 412a is connected with an oil return port of the first flap cylinder 41 a; the control oil port of the first one-flap balance valve 411a is connected with the port A of the first two-flap balance valve 412 a; the control oil port of the first two-flap balance valve 412a is connected with the port A of the first one-flap balance valve 411 a; an oil inlet of each second flap cylinder is connected with a second first flap balance valve 421a, and an oil outlet of each second flap cylinder is connected with a second flap balance valve 422 a.

The port A of the second first flap balance valve 421a is connected with the oil outlet of the multi-way valve, and the port B of the second flap balance valve 421a is connected with the oil inlet of the second flap cylinder 42 a; an opening A of the second flap balance valve 422a is connected with an oil return opening of the multi-way valve, and an opening B of the second flap balance valve 422a is connected with an oil return opening of the second flap cylinder 42 a; a control oil port of the second first flap balance valve 421a is connected with a port A of the second flap balance valve 422 a; a control oil port of the second flap balance valve 422a is connected with a port A of the second flap balance valve 421 a; according to the arrangement, when the hatch cover is closed, the turning plate is in a collection state; when the platform assembly needs to ascend to the clamping plate, the hatch cover system 2a drives the hatch cover to be opened, then the turning plate system drives the first turning plate oil cylinder 41a and the second turning plate oil cylinder 42a to extend out, the turning plate is driven to be opened, and after the platform assembly ascends to the clamping plate, the turning plate system drives the first turning plate oil cylinder 41a and the second turning plate oil cylinder to contract, so that the turning plate rotates and is attached to the edge of the platform assembly, the turning plate fills a gap between the deck and the hatch, and water on the deck is prevented from flowing into the hatch.

Further, the system also comprises a self-weight balance system for keeping the platform assembly balanced, the self-weight balance system is respectively connected with the first lifting driving oil cylinder and the second lifting driving oil cylinder 112a, and an oil port of the self-weight balance system of the platform assembly is connected with an oil outlet of the energy accumulator 5 a; like this, balanced system connects energy storage ware 5a, and energy storage ware 5a can compensate the leakage to two lift drive hydro-cylinders keep invariable pressure, and then guarantee the stability of platform subassembly.

Claims

1. The utility model provides a bulwark lift that water tightness is good which characterized in that: comprises a hydraulic system for controlling the inboard elevator and an anti-falling mechanism for preventing the elevator from falling; the lifting machine comprises a platform assembly, a lifting driving mechanism for driving the platform assembly to lift and a turning plate arranged in a gap between a hatch on a deck of the ship body and the ship body, wherein the turning plate is used for filling the gap between the hatch and the deck; the anti-falling mechanism comprises a lock pin mechanism and a detection device;

the platform assembly comprises a lifting platform and a platform bracket; the lifting platform is connected with the platform bracket; the platform bracket comprises more than two rope winding wheel installation parts and more than two rope winding connection parts; the two rope winding wheel installation parts and the two rope winding connection parts are symmetrically arranged on the platform bracket; the two rope winding wheel mounting parts are close to one side of the platform bracket; the two rope winding connecting parts are close to the other side of the platform bracket and are positioned above the rope winding wheel mounting part; the lifting platform is used for driving the airplane to lift; the platform bracket is used for supporting the lifting platform;

the lifting driving mechanism comprises a lifting driving device, a rope winding wheel set and a lifting rope, and two end parts of the lifting rope are respectively connected with the platform assembly; the two lifting ropes are wound on the rope winding wheel set and the lifting driving device at intervals, and the lifting driving device is used for driving the lifting ropes to move on the rope winding wheel set so as to drive the lifting platform to lift;

the detection device is arranged on one side of the lifting rope and comprises two first travel switches and two travel switches; the two first travel switches are arranged on one side of the platform assembly and are respectively abutted with the corresponding lifting ropes; the two second travel switches are arranged on the other side, opposite to the first travel switch, of the platform assembly, and the two second travel switches are respectively abutted with the corresponding lifting ropes; when a lifting rope is disconnected, the first travel switch or the second travel switch which is correspondingly abutted performs contact action and outputs a signal alarm;

the lock pin mechanism comprises a lock pin oil cylinder, a lock pin guide piece and a locking piece, wherein the lock pin oil cylinder is arranged on the edge of one side, close to the elevator, of each flat layer, the lock pin guide piece is arranged on one side of the lock pin oil cylinder, the lock pin guide piece is provided with a through groove arranged along the axis direction of the lock pin guide piece, the lock pin is movably arranged in the through groove of the lock pin guide piece, the output end of the lock pin oil cylinder is fixedly connected with one end of the lock pin, and the locking piece is respectively arranged on the edge of the lower side of the lifting platform; the locking piece is provided with a through hole matched with the lock pin, and the lock pin is driven to be inserted into the through hole of the locking piece through the extension of the lock pin oil cylinder so as to realize the locking of the lifting platform;

the hydraulic system comprises a hydraulic pump station, a platform component driving system, a hatch cover system, a vehicle garage flat lock pin system, a flap system, an energy accumulator, a proportional speed regulating valve and a multi-way valve; the P ports of the proportional speed regulating valve and the multi-way valve are respectively connected with the P port of the hydraulic pump station; t ports of the proportional speed regulating valve and the multi-way valve are respectively connected with a T port of a hydraulic pump station; the proportional speed regulating valve and the L port of the multi-way valve are respectively connected with the L port of the hydraulic pump station; an oil inlet and an oil outlet of the platform assembly driving system are respectively connected with the proportional speed regulating valve; an oil inlet and an oil outlet of the hatch cover system are respectively connected with the multi-way valve; an oil inlet and an oil outlet of the hangar flat-layer lock pin system are respectively connected with a multi-way valve; an oil inlet and an oil outlet of the garage flat bed lock pin system are respectively connected with a multi-way valve; an oil inlet and an oil outlet of the flap system are respectively connected with the multi-way valve;

2. The bulwark hoist with good water tightness according to claim 1, characterized in that: the rope winding wheel set comprises a first rope winding wheel, a second rope winding wheel, a third rope winding wheel, a fourth rope winding wheel, a fifth rope winding wheel, a sixth rope winding wheel and a seventh rope winding wheel; two rope winding wheels are arranged; the two rope winding wheels five, the two rope winding wheels six and the two rope winding wheels seven are symmetrically arranged relative to the platform assembly; the rope winding wheel seventh is arranged on the platform assembly; the lifting driving device is provided with a driving end and a fixed end; the first rope winding wheel is arranged at the fixed end; the second rope winding wheel is arranged at the driving end; the third rope winding wheel and the fourth rope winding wheel are sequentially arranged between the fifth rope winding wheel and the second rope winding wheel; two end parts of the lifting rope are respectively connected with the platform assembly; the two lifting ropes are arranged in parallel, and the two lifting ropes are wound on a rope wheel seven, a rope winding wheel six, a rope winding wheel five, a rope winding wheel one, a rope winding wheel two, a rope winding wheel three, a rope winding wheel four, the other rope winding wheel five, the other rope winding wheel six and the other rope winding wheel seven; the lifting driving device drives the rope pulley seven to reciprocate between the rope winding wheel five and the rope winding wheel six by driving the rope pulley two.

3. The bulwark hoist with good water tightness according to claim 1, characterized in that: and a lock pin travel switch is also arranged on the lock pin, and when the lock pin is inserted into the locking piece, the contact of the lock pin travel switch acts to output a signal.

4. The bulwark hoist with good water tightness according to claim 1, characterized in that: the bottom of the platform is provided with a damping spring.

5. The bulwark hoist with good water tightness according to claim 1, characterized in that: the elevator also comprises an elevating guide device; two lifting guide devices are arranged; the two lifting guide devices are connected with the platform assembly; the two lifting guide devices are close to one side of the platform assembly connected with the rope winding wheel seventh; and is positioned between the two rope winding wheels seven; the lifting guide device comprises a lifting guide rail assembly and a lifting guide piece; the platform assembly is connected with the lifting guide piece; the lifting guide piece is provided with a lifting guide wheel set; the lifting guide wheel set is arranged on the lifting guide rail component in a sliding manner;

the lifting guide rail assembly comprises a first lifting guide rail and a second lifting guide rail; the first lifting guide rail and the second lifting guide rail are provided with sliding rails; the lifting guide wheel set comprises a guide wheel bracket, and a pulley assembly, an auxiliary wheel I and an auxiliary wheel II which are arranged on the guide wheel bracket; the pulley component is arranged on the sliding rail in a sliding manner; the first auxiliary wheel is arranged on the side edge of the first lifting guide rail in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly; the second auxiliary wheel is arranged on the side edge of the second lifting guide rail in a sliding mode, and the radial direction of the first auxiliary wheel is perpendicular to the side edge of the platform assembly.

6. The bulwark hoist with good water tightness according to claim 1, characterized in that: the platform assembly driving system comprises a first lifting driving oil cylinder, a second lifting driving oil cylinder, a first lifting reversing valve, a second lifting reversing valve, a first balance valve, a second balance valve, a third balance valve and a fourth balance valve;

the P port of the first lifting reversing valve is connected with the oil outlet of the proportional speed regulating valve, and the T port of the first lifting reversing valve is connected with the oil return port of the proportional speed regulating valve; the port A of the first lifting reversing valve is connected with the port A of the first balance valve, and the port B of the first lifting reversing valve is connected with the port A of the second balance valve; the port B of the first balance valve is connected with an oil inlet of the first lifting driving oil cylinder, and the port B of the second balance valve is connected with an oil return port of the first lifting driving oil cylinder;

a port P of the second lifting reversing valve is connected with an oil outlet of the proportional speed regulating valve, and a port T of the second lifting reversing valve is connected with an oil return port of the proportional speed regulating valve; the port A of the second lifting reversing valve is connected with the port A of the third balance valve, and the port B of the second lifting reversing valve is connected with the port A of the fourth balance valve; the port B of the third balance valve is connected with an oil inlet of the second lifting driving oil cylinder, and the port B of the fourth balance valve is connected with an oil return port of the second lifting driving oil cylinder;

a first one-way throttle valve is connected between a control oil port of the first balance valve and an A port of the second balance valve, an oil inlet of the first one-way throttle valve is connected with a control oil port of the first balance valve, and an oil outlet of the first one-way throttle valve is connected with the A port of the second balance valve;

a second one-way throttle valve is connected between a control oil port of the second balance valve and the port A of the first balance valve, an oil inlet of the second one-way throttle valve is connected with a control oil port of the second balance valve, and an oil outlet of the second one-way throttle valve is connected with the port A of the first balance valve;

a third one-way throttle valve is connected between a control oil port of the third balance valve and an A port of the fourth balance valve, an oil inlet of the third one-way throttle valve is connected with a control oil port of the third balance valve, and an oil outlet of the third one-way throttle valve is connected with the A port of the fourth balance valve;

and a fourth one-way throttle valve is connected between a control oil port of the fourth balance valve and the port A of the third balance valve, an oil inlet of the fourth one-way throttle valve is connected with a control oil port of the fourth balance valve, and an oil outlet of the fourth one-way throttle valve is connected with the port A of the third balance valve.

7. The bulwark hoist with good water tightness according to claim 1, characterized in that: the hatch cover system comprises a first hatch cover oil cylinder, a second hatch cover oil cylinder, a first hatch cover balance valve, a second hatch cover balance valve, a third hatch cover balance valve and a fourth hatch cover balance valve; the port A of the first cabin cover balance valve and the port A of the third cabin cover balance valve are connected with the oil outlet of the multi-way valve in parallel; the port A of the second hatch cover balance valve and the port A of the fourth hatch cover balance valve are connected with the oil outlet of the multi-way valve in parallel; the port B of the first hatch cover balance valve is connected with an oil inlet of the first hatch cover oil cylinder, and the port B of the second hatch cover balance valve is connected with an oil return port of the first hatch cover oil cylinder; and a port B of the third hatch cover balance valve is connected with an oil inlet of the second hatch cover oil cylinder, and a port B of the fourth hatch cover balance valve is connected with an oil return port of the second hatch cover oil cylinder.

8. The bulwark hoist with good water tightness according to claim 1, characterized in that: the vehicle garage flat lock pin system and the hangar flat lock pin system respectively comprise lock pin driving systems, each lock pin driving system comprises more than two lock pin oil cylinders which are arranged in parallel, and an oil inlet and an oil return port of each lock pin oil cylinder are respectively connected with a first lock pin one-way throttle valve and a second lock pin one-way throttle valve; the port A of the first lock pin one-way throttle valve is connected with an oil outlet of the multi-way valve, and the port B of the first lock pin one-way throttle valve is connected with an oil inlet of the lock pin oil cylinder; the port A of the second lock pin one-way throttle valve is connected with an oil return port of the multi-way valve, and the port B of the first lock pin one-way throttle valve is connected with an oil return port of the lock pin oil cylinder.

9. The bulwark hoist with good water tightness according to claim 1, characterized in that: the plate turnover system comprises two first plate turnover oil cylinders and two second plate turnover oil cylinders; an oil inlet of each first flap cylinder is connected with a first flap balance valve, and an oil outlet of each first flap cylinder is connected with a first second flap balance valve;

the port A of the first flap balance valve is connected with the oil outlet of the multi-way valve, and the port B of the first flap balance valve is connected with the oil inlet of the first flap oil cylinder; the port A of the first two-turn plate balance valve is connected with an oil return port of the multi-way valve, and the port B of the first two-turn plate balance valve is connected with an oil return port of the first turn plate oil cylinder; the control oil port of the first one-turn plate balance valve is connected with the port A of the first two-turn plate balance valve; the control oil port of the first two-turn plate balance valve is connected with the port A of the first one-turn plate balance valve;

an oil inlet of each second flap cylinder is connected with a second flap balance valve, and an oil outlet of each second flap cylinder is connected with a second flap balance valve;

the port A of the second first flap balance valve is connected with the oil outlet of the multi-way valve, and the port B of the second flap balance valve is connected with the oil inlet of the second flap oil cylinder; the port A of the second flap balance valve is connected with an oil return port of the multi-way valve, and the port B of the second flap balance valve is connected with an oil return port of the second flap oil cylinder; a control oil port of the second first flap balance valve is connected with an A port of the second flap balance valve; the control oil port of the second flap balance valve is connected with the port A of the second first flap balance valve.

10. The bulwark hoist with good water tightness according to claim 1, characterized in that: the platform assembly is characterized by further comprising a dead weight balance system used for keeping the platform assembly balanced, the dead weight balance system is respectively connected with the first lifting driving oil cylinder and the second lifting driving oil cylinder, and an oil port of the platform assembly dead weight balance system is connected with an oil outlet of the energy accumulator.