Ship assembly hoisting device

Abstract

The present invention provides a ship assembly hoisting device, which relates to the field of shipbuilding hoisting equipment. The ship assembly hoisting device includes a hoisting pulley block, a hydraulic buffer assembly and a separate box body. The hoisting pulley block is fixedly installed on the hydraulic buffer assembly. The hydraulic buffer assembly includes a reinforced protective shell, a reinforced movable arm, a hydraulic cylinder and a cross-column oil reservoir. The interior of the reinforced protective shell is a hollow structure, and its inner bottom wall is provided with four three-dimensional through grooves penetrating downward. The cross-column oil reservoir is fixed at the central position of the inner bottom wall of the reinforced protective shell, and four reinforced movable arms are provided. The ship assembly hoisting device is more stable when hoisting marine accessories by providing a hydraulic buffer assembly and a buffer damping assembly, and there will be no problem of large-scale shaking when hoisting precision parts. By providing a separate box body, the external collision force is not easily directly transmitted to the internal precision parts, which can achieve a better protection effect.

Description

Technical Field

[0001] The invention relates to the field of shipbuilding hoisting equipment, in particular to a ship assembly hoisting device. Background Art

[0002] At present, the accelerated pace of shipyard construction, the change and optimization of construction methods, and the implementation of management plans have led to conflicts between the delivery time of many ship equipment in the shipyard and the ship construction time. This has caused some valuable cabinets and equipment to be unable to be normally hoisted into the cabin for assembly at the ship construction node, but these cabinets cannot be delayed to delay the construction progress. Therefore, the cabinets are often transported to the right place after the construction node has passed, and then the cabinets are hoisted and transported to the corresponding position in the cabin for installation. In this case, it is necessary to carefully hoist the cabinets onto the hull deck, and then enter the assembly position from the narrow cabin door and other obstructed parts. During the hoisting and transportation process, if there is a local collision or a large shake of the cabinet, it will not only damage the valuable equipment and cause significant economic losses, delay the production cycle, delay the delivery of the ship, but also cause accidental injuries to the construction workers.

[0003] Chinese patent publication number: CN108583778B discloses a protective lifting method for transporting important equipment on board a ship. The important equipment on board refers to a cabinet with functional equipment installed. The cabinet is installed in the cabin of the ship. When the cabinet is hoisted, the cabin of the ship has been built and completed. The protective lifting method is provided with protection work for the transportation and hoisting of important equipment. It is provided with two parts, a protection device and a transport device. The important equipment is transported and hoisted using this set of special tooling and protective lifting method. The protective lifting transportation method and special equipment of the present invention greatly alleviate the damage and breakage of the equipment during the transportation and hoisting process on board, and reduce the shipbuilding cost. The set of devices also has the characteristics of simple manufacture, easy processing and convenient operation.

[0004] However, in the later stages of ship manufacturing and assembly, more modular equipment needs to be installed. Some of these modular equipment are precision devices, which not only need to be well protected when transferred into the hull, but also need to avoid strong winds and shaking caused by safety personnel's operational problems when hoisting. Otherwise, once the equipment is damaged, it will bring great economic losses. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a ship assembly hoisting device, which solves the problems raised in the above background technology.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a ship assembly hoisting device, including a hoisting pulley block, a hydraulic buffer assembly and a separate box body, the hoisting pulley block is fixedly installed on the hydraulic buffer assembly, the hydraulic buffer assembly includes a reinforced protective shell, a reinforced movable arm, a hydraulic cylinder and a cross-column oil reservoir, the interior of the reinforced protective shell is a hollow structure, and its inner bottom wall is provided with four three-dimensional through grooves penetrating downward, the cross-column oil reservoir is fixed at the central position of the inner bottom wall of the reinforced protective shell, four reinforced movable arms are provided, which are respectively in the four three-dimensional through grooves, one end of the reinforced movable arm is hinged to the side wall of the three-dimensional through groove, and the other end can pass through the three-dimensional through groove, and a blocking plate is fixedly installed on the reinforced movable arm to prevent the other end of the reinforced movable arm from falling excessively, four hydraulic cylinders are provided, the fixed end of the hydraulic cylinder is hinged to the cross-column oil reservoir, the movable end of the hydraulic cylinder is hinged to the side wall of the reinforced movable arm, and the internal hydraulics of the four hydraulic cylinders are connected;

[0007] It also includes a buffer damping assembly, four of which are provided, one end of which is hinged to an end of the reinforced movable arm away from the reinforced protective shell, and the other end of which is hinged to the separate box body.

[0008] Preferably, the buffer damping assembly includes a telescopic rod, which is a two-section structure and can be extended and retracted by itself. It also includes a damping rod, which is inside the telescopic rod and can be compressed when the telescopic rod is contracted. The upper end of the telescopic rod is hinged to the reinforced movable arm, and the other end is hinged to the separate box.

[0009] Preferably, the split box includes a frame, which is provided with two groups, and the upper and lower groups of frames are plugged into each other to form a cubic hollow frame, and the upper and lower groups of frames are fixed by bolts, and the upper and lower frames are fixedly installed with reinforcing steel plates on the sides away from each other; it also includes a fixed plate, which is fixed to two corresponding surfaces of the upper frame; the four surfaces of the lower frame and the remaining two surfaces of the upper frame are installed with movable plates, the bottom end of the lower movable plate is hinged to the bottom end of the frame, and the top end of the upper movable plate is hinged to the upper end of the frame, and the movable plate can be fixed when it is closed with the frame;

[0010] One end of the four telescopic rods away from the reinforced movable arm is hinged to four corners of the upper frame respectively.

[0011] Preferably, the movable plate is provided with two elliptical grooves at one end away from the hinge axis of the frame, and the two elliptical grooves correspond to the two sides of the frame respectively. Studs are fixedly installed at the positions corresponding to the elliptical grooves on the frame, and the studs can pass through the elliptical grooves. After the studs pass through the elliptical grooves, a foldable manual nut is installed, and the foldable manual nut can fix the movable plate and the frame after being tightened.

[0012] Preferably, the separable box also includes an airbag, a plurality of airbags are provided, the airbags are fixed on the surface of the movable plate and the fixed plate facing the frame, and quick-connect air valves are fixedly installed in the middle position of the movable plate and the fixed plate, and the quick-connect air valves are connected to the airbags.

[0013] Preferably, a plurality of steel cables are fixedly installed on the bottom of the reinforced protective shell, and the other ends of the steel cables are fixedly connected to the upper reinforcement steel plate.

[0014] Preferably, four groups of buffer wheels are fixedly installed on the bottom of the split box, and the buffer wheels include support arms and rollers. The support arms are elastically hinged to the reinforcement steel plate at the bottom, and the rollers are rotatably installed on the other end of the support arms, and the rollers are universal wheels.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The ship is equipped with a lifting device. By arranging a hydraulic buffer component and a buffer damping component, when lifting marine equipment, four buffer damping components will pull down the reinforced movable arm, and the reinforced movable arm will be forced to escape from the three-dimensional through groove. At this time, the four hydraulic cylinders are all pulled, and the damping rod is also pulled. The four damping rods can effectively distribute the pulling force of the lifting pulley group on the separate box body. If there is a strong wind shaking, one of the hydraulic cylinders is compressed, and the hydraulic oil inside it can be distributed to the remaining three hydraulic cylinders, so that the separate box body can have a certain anti-swaying effect when facing crosswinds. The hydraulic cylinder cooperates with the reinforced movable arm to achieve the effect of offsetting the crosswind force, and the damping rod is also in an active state, which can further offset the effect of the lateral force. Due to the existence of two upper and lower components that offset the force, it is more stable when lifting marine accessories, and there will be no problem of large shaking when lifting precision components.

[0017] The ship is equipped with a lifting device. By setting up a separate box, the separate box can be separated up and down, so that precision parts can be quickly deployed, and higher marine accessories can be quickly placed, and the packaging effect is faster. In addition, a movable plate is set, and the movable plate can be opened all at once, which speeds up the connection when putting in the equipment, and the equipment can be unloaded quickly after lifting. It is suitable for maintenance personnel to operate in different positions. Airbags are set, which can be inflated uniformly after the precision instruments are loaded. After inflation, the precision parts are restrained by multiple airbags. Therefore, when the separate box collides, the external collision force is not easily directly transmitted to the internal precision parts, which can achieve a better protection effect.

[0018] The ship is equipped with a lifting device. By setting a buffer wheel, when the separated box is lowered, the buffer wheel can contact the ground or the deck. After the separated box is gradually stabilized, the buffer wheel can play a buffering effect. In addition, due to the presence of the buffer wheel on the ship, there is no need to use an additional forklift, and it is also very suitable for passing through narrow ship passages.

[0019] The ship is equipped with a lifting device. By setting up steel cables, when the four buffer damping components are subjected to force at the same time, the steel cables become relaxed. If the crosswind is strong, causing the separated box to shake violently, some of the steel cables will be straightened, thereby playing an auxiliary restrictive role. Moreover, when an accident occurs, the steel cables can also play a secondary protection role. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure of the present invention;

[0021] Figure 2 It is a front view of the structure of the present invention;

[0022] Figure 3 It is a structural cross-sectional view of the separate box of the present invention;

[0023] Figure 4 It is an expanded view of the separate box of the present invention;

[0024] Figure 5 For the present invention Figure 4 A magnified view of a local area in ;

[0025] Figure 6 It is a structural diagram of the hydraulic buffer assembly and the buffer damping assembly of the present invention;

[0026] Figure 7 It is a connection diagram of the buffer damping assembly and the frame of the present invention;

[0027] Figure 8 For the present invention Figure 7 A magnified view of a local area in ;

[0028] Fig. 9 This is a connection diagram of the hydraulic buffer assembly and the buffer damping assembly of the present invention.

[0029] In the figure: 1. lifting pulley block; 2. hydraulic buffer assembly; 201. reinforced protective shell; 202. reinforced movable arm; 203. hydraulic cylinder; 204. cross column oil reservoir; 205. three-dimensional through groove; 206. blocking plate; 3. separate box; 301. frame; 302. reinforced steel plate; 303. fixed plate; 304. movable plate; 305. elliptical long groove; 306. stud; 307. foldable manual nut; 308. air bag; 309. quick-connect air valve; 4. buffer damping assembly; 401. telescopic rod; 402. damping rod; 5. steel cable; 6. buffer wheel; 601. support arm; 602. roller. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that all directional indications in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between various components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0032] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] In addition, in the present invention, descriptions such as "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0034] like Figure 1-9As shown, a ship assembly hoisting device includes a hoisting pulley block 1, a hydraulic buffer assembly 2 and a separate box 3. The hoisting pulley block 1 is fixedly installed on the hydraulic buffer assembly 2. The hydraulic buffer assembly 2 includes a reinforced protective shell 201, a reinforced movable arm 202, a hydraulic cylinder 203 and a cross column oil reservoir 204. The interior of the reinforced protective shell 201 is a hollow structure, and its inner bottom wall is provided with four three-dimensional through grooves 205 penetrating downward. The cross column oil reservoir 204 is fixed at the central position of the inner bottom wall of the reinforced protective shell 201. The reinforced movable arm 202 is provided with a hydraulic cylinder 203 and a cross column oil reservoir 204. There are four hydraulic cylinders 202, which are respectively located in four three-dimensional through slots 205. One end of the reinforced movable arm 202 is hinged to the side wall of the three-dimensional through slot 205, and the other end can pass through the three-dimensional through slot 205. A blocking plate 206 is fixedly installed on the reinforced movable arm 202 to prevent the other end of the reinforced movable arm 202 from falling too much. There are four hydraulic cylinders 203. The fixed end of the hydraulic cylinder 203 is hinged to the cross column oil reservoir 204, and the movable end of the hydraulic cylinder 203 is hinged to the side wall of the reinforced movable arm 202. The internal hydraulic pressures of the four hydraulic cylinders 203 are connected;

[0035] It also includes a buffer damping assembly 4, four of which are provided. One end of the buffer damping assembly 4 is hinged to one end of the reinforced movable arm 202 away from the reinforced protective shell 201, and the other end is hinged to the separate box body 3.

[0036] The lifting pulley block 1 is a structure in the prior art, which can be directly installed and connected with the cable of the crane, or the hook device in the prior art can be installed on the reinforced protective shell 201 on the hydraulic buffer assembly 2. A central oil reservoir is provided inside the reinforced protective shell 201, which is inside the cross column oil reservoir 204. The oil pipes of the four hydraulic cylinders 203 are all connected to the central oil reservoir. When in a balanced state, the hydraulic cylinder 203 is not in a fully extended or fully retracted state, but in a half-extended balanced state. After one of the hydraulic cylinders 203 is compressed and contracted, the other three will be pushed by the hydraulic oil and then extended. Similarly, when one of the hydraulic cylinders 203 is stretched, the other three will be pulled by the hydraulic oil and then contracted. If the four hydraulic cylinders 203 are subjected to the same pressure or the same pulling force, they will not extend or retract, and will be in a balanced state. Similarly, the reinforced movable arm 202 has a small moving range in the three-dimensional through groove 205, and the blocking plate 206 is provided to prevent the hydraulic cylinder 203 from being damaged due to excessive weight at the bottom, thereby causing the problem of unstable lifting.

[0037] The reinforced protective shell 201 is a square when viewed from above, the four reinforced movable arms 202 are just located at the diagonal position of the square, and the four buffer damping components 4 also just correspond to the diagonal of the square, so that when subjected to a total gravity, the four buffer damping components 4 are subjected to the same tension.

[0038] The buffer damping assembly 4 includes a telescopic rod 401, which is a two-stage structure. The telescopic rod 401 can be retracted and extended by itself. It also includes a damping rod 402, which is located inside the telescopic rod 401. The damping rod 402 can be compressed when the telescopic rod 401 contracts. The upper end of the telescopic rod 401 is hinged to the reinforced movable arm 202, and the other end is hinged to the separate box 3.

[0039] The telescopic rod 401 is a forged U-shaped structure, and the damping rod 402 is located inside it. The damping rod 402 is provided with a spring and a damper, which can play a buffering and damping effect. The extension of the telescopic rod 401 is limited to avoid damage to the damping rod 402 due to excessive tension.

[0040] The split box 3 includes a frame 301, which is provided with two groups. The upper and lower groups of frames 301 are plugged into each other to form a cubic hollow frame. The upper and lower groups of frames 301 are fixed by bolts. The sides of the upper and lower frames 301 that are away from each other are fixedly installed with reinforcing steel plates 302; it also includes a fixed plate 303, which is fixed to two corresponding surfaces of the upper frame 301; the four surfaces of the lower frame 301 and the remaining two surfaces of the upper frame 301 are all installed with movable plates 304, the bottom end of the lower movable plate 304 is hinged to the bottom end of the frame 301, and the top end of the upper movable plate 304 is hinged to the upper end of the frame 301, and the movable plate 304 can be fixed when it is closed with the frame 301;

[0041] One end of the four telescopic rods 401 away from the reinforcing movable arm 202 is hinged to four corners of the upper frame 301 respectively.

[0042] The frame 301 is made of a hollow square tube, and the whole is a force-bearing object, which can carry heavier marine equipment. The connection between the telescopic rod 401 and the frame 301 is connected by rivets, which has strong stability and durability. The tension of the telescopic rod 401 acts on the frame 301, and the reinforcement steel plate 302 is connected to the frame 301 by welding. The reinforcement steel plate 302 plays a supporting effect. The specific heavier marine parts also need to be connected and fixed to the frame 301 with straps. The hinge of the movable plate 304 can ensure that the movable plate 304 is vertical to the frame 301 when opened, which is convenient for loading larger marine equipment into the frame 301.

[0043] Two elliptical long grooves 305 are provided at one end of the movable plate 304 away from the hinge axis with the frame 301, and the two elliptical long grooves 305 correspond to the two sides of the frame 301 respectively. Studs 306 are fixedly installed at the positions corresponding to the elliptical long grooves 305 on the frame 301, and the studs 306 can pass through the elliptical long grooves 305. After the studs 306 pass through the elliptical long grooves 305, a foldable manual nut 307 is installed. After the foldable manual nut 307 is tightened, the movable plate 304 and the frame 301 can be fixed.

[0044] When the movable plate 304 is closed, the stud 306 just passes through the oval long groove 305. After passing through the oval long groove 305, it is tightened with a foldable manual nut 307. The foldable manual nut 307 is a combination of a separate hexagonal cap and a foldable handle, which is convenient for quick tightening operation. Since the frame 301 does not generate vibration, the foldable manual nut 307 can be used for simple tightening restrictions, and the problem of the cap falling off will not occur. The simple tightening form is set, and the efficiency is high during loading and unloading.

[0045] The separate box 3 also includes an airbag 308, of which there are multiple ones. The airbag 308 is fixed on the movable plate 304 and the fixed plate 303 on the side facing the frame 301. A quick-connect air valve 309 is fixedly installed in the middle position of the movable plate 304 and the fixed plate 303, and the quick-connect air valve 309 is connected to the airbag 308.

[0046] The airbag 308 is a disc-shaped structure made of rubber. The side of the airbag 308 away from the movable plate 304 is provided with an anti-skid layer. After the airbag 308 is inflated, it will expand into a sphere. After the airbag 308 is inflated, it can limit the parts loaded. When the shell of the part is thin, the airbag 308 can be simply inflated, which only plays a role of anti-collision but not fixing. It has a wide range of application scenarios. After inflation, the airbag 308 can be deformed according to the shape of the equipment, which can protect irregular equipment. The quick-connect air valve 309 can be quickly adapted to the air pipe joint of the prior art, and is used for the air pump to inflate the airbag 308. The quick-connect air valve 309 is also equipped with a deflation structure to facilitate manual deflation by the operator.

[0047] A plurality of steel cables 5 are fixedly installed at the bottom of the reinforced protective shell 201 , and the other ends of the steel cables 5 are fixedly connected to the upper reinforcement steel plate 302 .

[0048] When the four buffer damping components 4 are subjected to force at the same time, the steel cables 5 are in a relaxed state. If the crosswind is strong, causing the separate box 3 to shake greatly, some of the steel cables 5 will be straightened, thereby playing an auxiliary limiting effect. In addition, when an accident occurs, the steel cables 5 can also play a secondary protection effect.

[0049] Four groups of buffer wheels 6 are fixedly installed at the bottom of the split box 3. The buffer wheel 6 includes a support arm 601 and a roller 602. The support arm 601 is elastically hinged to the bottom reinforcement steel plate 302. The roller 602 is rotatably installed on the other end of the support arm 601. The roller 602 is a universal wheel.

[0050] A spring rod is installed at the hinge between the support arm 601 and the reinforcing steel plate 302 to prevent the detachable box 3 from quickly contacting the ground when lowering, causing internal vibration and damage to precision equipment. In addition, the universal wheel structure of the roller 602 facilitates the transfer of the detachable box 3 on the deck. When passing through narrow passages on the ship, the use of traction equipment or forklifts can be avoided, which facilitates installation in narrow areas.

[0051] When in use, marine assembly equipment or precision parts can be placed between the two frames 301 and supported by the bottom reinforcement steel plate 302. First, before putting them in, open all the movable plates 304 of the bottom frame 301. At this time, the equipment can be easily put in, or the four sides of the equipment can be conveniently tied. When facing higher parts, the upper and lower frames 301 can be separated. After putting them in, the upper frame 301 is buckled, and then bolts are used to fasten them. After installation, close all the movable plates 304, tighten the movable plates 304 with the foldable manual nuts 307 to prevent looseness, and then connect the multiple air pipes of the air pump to the quick-connect air valve 309 to inflate the internal airbag 308. After inflation, the airbag 308 will expand and squeeze the internal parts. The deformation of the airbag 308 will exert an extrusion force on the internal marine parts, so that multiple sides of the parts are restricted by the airbag 308, and the hoisting is more stable.

[0052] During hoisting, the four buffer damping components 4 will pull down the reinforced movable arm 202, and the reinforced movable arm 202 will be forced to escape from the three-dimensional through slot 205. At this time, the four hydraulic cylinders 203 are all pulled, and the damping rod 402 is also pulled. The four damping rods 402 can effectively distribute the pulling force of the hoisting pulley group 1 on the separated box body 3. If there is strong wind and shaking, one of the hydraulic cylinders 203 is compressed, and the hydraulic oil inside it can be distributed to the remaining three hydraulic cylinders 203, so that the separated box body 3 can have a certain anti-swaying effect when facing crosswind. The hydraulic cylinder 203 cooperates with the reinforced movable arm 202 to achieve the effect of offsetting the crosswind force, and the damping rod 402 is also in an active state, which can further offset the lateral force.

[0053] After being lowered, the buffer wheel 6 can contact the ground or the deck. After the separate box body 3 is gradually stabilized, the buffer wheel 6 can buffer the weight of the parts. In addition, due to the presence of the buffer wheel 6 on board, there is no need to use an additional forklift. It is also very suitable for passing through narrow passages on board. It can be pushed directly by the installer or pulled by a tractor. When it reaches the unloading station, the airbag 308 is deflated, and then all the movable panels 304 are opened to facilitate construction personnel to operate at different positions.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0055] In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0056] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A ship assembly hoisting device, comprising a hoisting pulley block (1), characterized in that: The invention also comprises a hydraulic buffer assembly (2) and a separate box (3). The lifting pulley block (1) is fixedly mounted on the hydraulic buffer assembly (2). The hydraulic buffer assembly (2) comprises a reinforced protective shell (201), a reinforced movable arm (202), a hydraulic cylinder (203) and a cross-column oil reservoir (204). The interior of the reinforced protective shell (201) is a hollow structure, and its inner bottom wall is provided with four three-dimensional through grooves (205) penetrating downward. The cross-column oil reservoir (204) is fixed at the central position of the inner bottom wall of the reinforced protective shell (201). The reinforced movable arm (202) is provided with four, respectively located at In the four three-dimensional through slots (205), one end of the reinforced movable arm (202) is hinged to the side wall of the three-dimensional through slot (205), and the other end can pass through the three-dimensional through slot (205). A blocking plate (206) is fixedly installed on each of the reinforced movable arms (202) to prevent the other end of the reinforced movable arm (202) from falling excessively. Four hydraulic cylinders (203) are provided, and the fixed end of the hydraulic cylinder (203) is hinged to the cross column oil reservoir (204). The movable end of the hydraulic cylinder (203) is hinged to the side wall of the reinforced movable arm (202). The internal hydraulics of the four hydraulic cylinders (203) are in communication; The utility model also comprises a buffer damping assembly (4), wherein four buffer damping assemblies (4) are provided, wherein one end of the buffer damping assembly (4) is hinged to one end of the reinforced movable arm (202) away from the reinforced protective shell (201), and the other end is hinged to the separate box (3); the buffer damping assembly (4) comprises a telescopic rod (401), the telescopic rod (401) is a two-stage structure, the telescopic rod (401) can be self-retracted, and also comprises a damping rod (402), the damping rod (402) is located inside the telescopic rod (401), and the telescopic rod (401) can compress the damping rod (402) when it is contracted, the upper end of the telescopic rod (401) is hinged to the reinforced movable arm (202), and the other end is hinged to the separate box (3); the separate box (3) comprises a frame (301), and the frame (301) is provided with two groups, the upper and lower groups of frames (301) are plugged into each other to form a cubic hollow frame, the upper and lower groups of frames (301) are fixed by bolts, and the upper and lower frames (301) are fixedly installed with reinforcing steel plates (302) on the sides away from each other; it also includes a fixed plate (303), the fixed plate (303) is fixed to two corresponding surfaces of the upper frame (301); the four surfaces of the lower frame (301) and the remaining two surfaces of the upper frame (301) are installed with movable plates (304), the bottom end of the lower movable plate (304) is hinged to the bottom end of the frame (301), and the top end of the upper movable plate (304) is hinged to the upper end of the frame (301), and the movable plate (304) and the frame (301) can be fixed when they are closed; One end of the four telescopic rods (401) away from the reinforcing movable arm (202) is hinged to four corners of the frame (301) above; one end of the movable plate (304) away from the hinge axis of the frame (301) is provided with two elliptical long grooves (305), the two elliptical long grooves (305) respectively correspond to the two sides of the frame (301), and a stud (306) is fixedly installed at the position corresponding to the elliptical long groove (305) on the frame (301), and the stud (306) can pass through the elliptical long groove (305). The stud (306) passes through the elliptical long groove (305). A foldable manual nut (307) is installed at the rear, and the foldable manual nut (307) can fix the movable plate (304) and the frame (301) after being tightened; the separable box body (3) also includes an air bag (308), a plurality of air bags (308) are provided, and the air bags (308) are fixed to the movable plate (304) and the fixed plate (303) on the side facing the frame (301); the middle position of the movable plate (304) and the fixed plate (303) is fixedly installed with a quick-connect air valve (309), and the quick-connect air valve (309) is connected to the air bag (308).

2. A ship assembly and lifting device according to claim 1, characterized in that: A plurality of steel cables (5) are fixedly mounted on the bottom of the reinforced protective shell (201), and the other ends of the steel cables (5) are fixedly connected to the upper reinforcement steel plate (302).

3. A ship assembly and lifting device according to claim 2, characterized in that: Four groups of buffer wheels (6) are fixedly mounted on the bottom of the split box (3), the buffer wheels (6) comprising a support arm (601) and a roller (602), the support arm (601) being elastically hinged to a reinforcement steel plate (302) at the bottom, the roller (602) being rotatably mounted on the other end of the support arm (601), and the roller (602) being a universal wheel.

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