Telescopic submersible transport craft, and inspection device and method therefor

Abstract

A telescopic submersible transport craft, and an inspection device and method therefor. The transport craft comprises a control room (1), a forward compartment (2), an annular piston (3), an annular hydraulic cylinder (4), an aft compartment (5), an electric motor and steering gear compartment (6), a propeller (7) and diving planes (8). When the annular piston (3) moves back and forth in the annular hydraulic cylinder (4), the volume and specific gravity of the transport craft change, thereby achieving the aim of diving and surfacing. The inspection device for the transport craft comprises a pressure tank (51) for inspecting front and rear sections, and a gear pump (58) and an airtight storage tank (59) for inspecting a middle section, and various conditions during submerged navigation can be simulated in an onshore workshop, thereby eliminating potential safety hazards.

Description

Telescopic submersible transport boat and detection device and method thereof TECHNICAL FIELD

[0001] The present application relates to the technical field of special ships, in particular to a telescopic submersible transport boat and detection device and method thereof, which is a submersible boat that can transport personnel and goods from underwater to the destination and unload quickly in any sea conditions, and checks and tests the actual application scene on land. BACKGROUND

[0002] Since the invention of submarines at the end of the nineteenth century, the purpose of controlling sinking and adjusting load is achieved by absorbing and discharging seawater to change the specific gravity of the submarine, which requires multiple water tanks, numerous valves and pipelines, and the structure and operation are very complex and costly. The detection after completion is carried out by trial sailing, which is time-consuming and laborious, and also has risks. SUMMARY

[0003] The purpose of the present application is to provide a telescopic submersible transport boat and detection device and method thereof, which is based on the principle of changing the volume to change the specific gravity, and proposes a telescopic submersible transport boat to achieve the purpose of cylindrical structure and operation, and the detection is also carried out on land to achieve the purpose of fast and safe detection.

[0004] The technical scheme of the present application is that the telescopic submarine transport boat comprises a driver cabin 1, a front cabin 2, a ring-shaped piston 3, a ring-shaped hydraulic cylinder 4, a rear cabin 5, an electric motor rudder cabin 6, a propeller 7 and a horizontal rudder 8, characterized in that the upper part of the driver cabin 1 is capable of being opened and closed transversely through an electric hinge 9, the driver cabin 1 and the front cabin 2 with equal diameter are connected in water-tight mode, the top of the front cabin 2 is provided with an entrance 10 and a breather pipe 11, the top of the breather pipe 11 is provided with an electromagnetic valve 12, both sides are provided with portholes 13, the middle of the outer surface is provided with the horizontal rudder 8, the tail of the front cabin 2 is connected with the front end of the ring-shaped piston 3 through a connecting flange 14 and bolts, the lower part of the ring-shaped piston 3 is respectively provided with a stabilizing sleeve 15 on both sides, the tail end of the ring-shaped piston 3 is provided with a ring-shaped piston head 16, the outer side of the ring-shaped piston head 16 is provided with a clamping groove 17 matched with the ring-shaped piston 3, the outer radial surface is provided with an outer ring-shaped groove 18, the inner radial surface is provided with an inner ring-shaped groove 19, the bottom surfaces of the outer ring-shaped groove 18 and the inner ring-shaped groove 19 are slightly arc-shaped, the center is provided with a circular pressure equalizing hole 20, the pressure equalizing hole 20 is matched with a pressure equalizing hole in the inner side of the piston head 16, the outer ring-shaped groove 18 and the inner ring-shaped groove 19 are used for installing a piston ring, the piston ring is composed of a plurality of piston sub-rings 21, the height and width of the rubber material piston sub-ring 21 are equal to those of the outer ring-shaped groove 18 and the inner ring-shaped groove 19, the curvature is also the same, one end of the piston sub-ring 21 is provided with a convex part, the other end of the piston sub-ring 21 is provided with a concave part, a plurality of sub-ring concave-convex parts are connected, and the complete piston ring is formed, the piston head 16 provided with the piston sub-ring 21 is capable of sliding forward and backward in the ring-shaped hydraulic cylinder 4, the ring-shaped hydraulic cylinder 4 comprises a cylindrical outer cylinder body 22 and an inner cylinder body 23 formed by a steel plate, the outer side of the front end of the outer cylinder body 22 is provided with a tension bearing reinforcing ring 24, the inner side is provided with a sealing ring 25 preventing seawater from entering the cylinder and an outer limiting ring 26 preventing the ring-shaped piston head 16 from moving excessively, the outer side of the front end of the inner cylinder body 23 is provided with a pressure bearing reinforcing ring 27, the inner side of the inner cylinder body 23 is provided with an inner limiting ring 28 and a breather hole 29, the breather hole 29 is used for the gas in the cylinder to enter and exit when the ring-shaped piston 3 moves, the front end surface of the inner cylinder body 23 is sealed by a front steel plate 30 and is provided with a front water-tight door 31, the rear end surface is sealed by a rear steel plate 32 and is provided with a rear water-tight door 33, the lower part is provided with an upper cabin plate 34, the upper cabin plate 34 is flush with a telescopic cabin plate 35 in the ring-shaped piston 3, the space surrounded by the front steel plate 30, the rear steel plate 32 and the upper cabin plate 34 is an equipment cabin 36, an electric control system, an air regeneration device, an air conditioning system and a high-pressure nitrogen tank 37 are all installed in the equipment cabin 36, the lower part of the upper cabin plate 34 is a lower cabin plate 38, the lower cabin plate 38 is provided with a rack-shaped track 39, a battery car 40 loaded with a battery pack is capable of moving and positioning on the track 39 through gear-shaped wheels, the lower side walls of both sides below the lower cabin plate 38 are respectively provided with stabilizing rods 41 which slide in the stabilizing sleeves 15 in the ring-shaped piston 3, the outer walls of the ring-shaped hydraulic cylinder 4 are respectively provided with life-saving air bags 42 made of rubberized nylon cloth, one end of the life-saving air bag 42 is provided with a pressure reducing valve 43, the rear end of the ring-shaped hydraulic cylinder 4 is connected with a positioning ring 44,The positioning ring 44 is a circular ring structure made of steel plate, the outer diameter of the positioning ring 44 is larger than the outer diameter of the outer cylinder body 22, the outer edge of the positioning ring 44 has a plurality of penetrating connecting holes 45, the cylinder body side surface of the positioning ring 44 is provided with a circular ring-shaped outer fixed circle groove 46 and an inner fixed circle groove 47, the rear end of the outer cylinder body 22 is sealingly embedded in the outer fixed circle groove 46, the rear end of the inner cylinder body 23 is sealingly embedded in the inner fixed circle groove 47, the middle of the two grooves is a space where the ring type piston head 16 and the hydraulic medium exist, a plurality of waist-shaped or circular inlet and outlet holes 48 are provided on the positioning ring 44 at the center of the two grooves, for the hydraulic medium to enter and exit the cylinder, the inlet and outlet holes 48 are connected with the pump valve system 50 through the hydraulic pipe 49, the pump valve system 50 is installed in the rear cabin 5, the rear cabin 5 is connected with the positioning ring 44 through the connecting hole 45, the top of the rear cabin 5 has the entrance and exit 10, and both sides have string windows, the rear cabin 5 is watertight connected with the motor rudder cabin 6.

[0005] After the submarine is built, strict and repeated detection must be carried out, the detection of the existing submarine is carried out during the underwater trial, which is time-consuming, high in cost and high in risk, especially when the limit diving depth detection is carried out, the tragedy of the submarine sinking and people dying may be caused. The application also provides a detection device for detecting the telescopic submarine transport boat, which comprises pressure tanks 51 for detecting the front section and the rear section and a gear pump 58 and an air-tight storage tank 59 for detecting the middle section, the front section comprises the driver cabin 1 and the front cabin 2, the rear section comprises the rear cabin 5 and the motor rudder cabin 6, the inner diameter and the length of the pressure tank 51 are greater than the outer diameter and the length of the front section and the outer diameter and the length of the rear section, one end of the pressure tank 51 is provided with an end cover 52, the middle part of the pressure tank 51 is provided with an observation window 53, the other end of the pressure tank 51 is provided with a hydraulic pipe 54, a gear pump 55 and an electric socket 65, the upper part of the pressure tank 51 is provided with an exhaust pipe 56 and a first pressure gauge 57, a camera and a sensor are installed in the pressure tank 51, the middle section comprises the ring type piston 3 and the ring type hydraulic cylinder 4 which cooperate with each other, the air-tight storage tank 59 is provided with an air outlet 60, the ring type piston 3 is provided with a front stopper 61 away from the ring type hydraulic cylinder 4, the ring type hydraulic cylinder 4 is provided with a rear stopper 62 away from the ring type piston 3, the outer end of the ring type piston 3 is sealed by a thick steel plate 63, and the ring type hydraulic cylinder 4 is provided with a second pressure gauge 64.

[0006] The detection items of the front section and the rear section are the overall pressure resistance and the sealing performance, the application also provides a method for detecting the telescopic submarine transport boat by using the detection device, which comprises the following steps.

[0007] The front and rear sections are placed in the pressure tank 51 with a roller inside, and after the end cover 52 is closed, the gear pump 55 is started to pressurize the tank with water. The air in the tank is gradually replaced by water, and when water flows out of the exhaust port 56, the air has been completely replaced by water. The end cover of the exhaust port 56 is tightened, and the water is pumped manually. The pressure gauge is closely observed, and if the water pump does not progress but the pressure gauge value increases, it indicates that the section being tested has no water leakage or deformation. When the pressure gauge 57 shows that the working depth or the limit depth pressure value has been reached, the pumping is stopped, the valve is closed, and after a predetermined time, if the pressure gauge value does not change, the section passes the pressure resistance and sealing performance test. The above is shown in Figure 9. The detection of the middle section is divided into two steps. The first step is the detection of the diving and floating operation performance, as shown in Figure 10. After the middle section (ring-shaped piston 3 and ring-shaped hydraulic cylinder 4) is assembled on site, the hydraulic medium (which can be oxygen-free water) is pumped into the ring-shaped cylinder. The ring-shaped piston 3 extends forward, the volume of the boat increases, and it is floating upward. When it touches the limit switch, it automatically stops, indicating that the volume of the boat has reached the maximum, and the boat is on the sea surface. The exhaust valve of the pump valve system 50 is opened, and the ring-shaped piston retracts under atmospheric pressure. The volume of the boat decreases, indicating that it is diving. The above test is repeated multiple times, and if the ring-shaped piston moves smoothly, it passes the diving and floating operation performance test.

[0008] The second step is the limit depth performance test. The middle section is transported to the detection station shown in Figure 11, and the gear pump 58 is used to make 2 / 3 of the ring-shaped piston 3 in the cylinder, i.e. in the state of full-load diving. Then the manual pump is switched to pressurize, and the hydraulic medium is pressurized. The pressure is transmitted to the piston sub-ring 26 installed inside and outside the ring-shaped piston head 16 through the equalizing hole 20, so that it tightly adheres to the outer cylinder body 22 and the inner cylinder body 23. The greater the pressure in the cylinder, the tighter the adhesion, so the hydraulic medium will not leak. Due to the front stop block 61 and the rear stop block 62, the ring-shaped piston 3 will not move even if it is manually pressurized. When the pressure gauge 64 shows that the pressure in the cylinder has reached the limit depth pressure, the pressurization is stopped and the pressure is maintained for a predetermined period of time. After the pressure is released, the middle section is disassembled, and the deformation of each piston sub-ring is checked. The crack or damage of the inner and outer cylinder walls and the inner and outer reinforcing rings of the ring-shaped hydraulic cylinder is checked with a flaw detector. If everything is normal, it passes the most difficult limit depth test.

[0009] After the three sections pass the detection, the equipment is installed, and finally it is connected as a whole with high-strength bolts, and the final assembly is completed, and the trial voyage can be carried out.

[0010] During the water surface trial, due to the support of the stabilizing rod 41 and the stabilizing sleeve 15, the high shear strength of the connecting flange and the clamping of the bolt, the boat body can withstand the impact of waves and the force during six-degree-of-freedom motion. The center of gravity of the boat is low, so it can safely navigate on the water surface. The cooperation of the stabilizing rod 41 and the stabilizing sleeve 15 provides stability for the boat during navigation on the water surface and underwater.

[0011] When the submarine dives, the volume of the submarine is reduced and the center of gravity is moved. The center of gravity should be adjusted by the battery trolley 40 to make the submarine sink horizontally. When the submarine is completely submerged, the electromagnetic valve 12 is closed and the horizontal rudder 8 is operated to dive deeper.

[0012] The water resistance of the submarine is small when diving because the water displacement of the submarine on the water is equal to the water displacement of the submarine under water.

[0013] The longitudinal or lateral inclination of the submarine should be avoided when diving. The center of gravity of the submarine can be adjusted by moving the battery trolley 40 to avoid the longitudinal or lateral inclination. When the diving is finished, the horizontal rudder is first raised to the sea surface, and then the electromagnetic valve 12 is opened when the snorkel is out of water. At the same time, the hydraulic medium is pumped in, and the submarine is floated horizontally. When the air pressure inside and outside the submarine is balanced, the hatch can be opened.

[0014] Safety is the most important. The causes of the submarine accidents are summarized as follows: the submarine body is flooded, the cabin is on fire, the equipment fails, the operation is wrong, the sea conditions change, and the submarine body is broken.

[0015] The submarine has no valves and pipelines connected to the sea, and is a completely closed body under water, so it is generally not flooded. If the submarine uses lithium iron phosphate batteries or solid batteries that do not catch fire, there will be no fire. The equipment that may fail is the pump valve system and the sealing ring of the piston head 16, which should be regularly maintained. The diving and floating operations of the submarine are simple, and the possibility of wrong operation is small.

[0016] The sea conditions change means that the water temperature in a certain sea area is higher or the salinity is lower, so the buoyancy is smaller. When the submarine dives to this sea area, it will suddenly fall down, i.e. drop deep. When dropping deep, two measures should be taken immediately. One is to move the battery trolley as far back as possible to make the bow of the submarine upward, and to open the full power to upwardly rush. At the same time, the pump valve system is started to pump in the hydraulic medium to make the ring type piston move forward, the submarine body increase, and positive buoyancy be generated. The two measures should be taken together to avoid dropping deep.

[0017] If the submarine body is broken due to external force, the driver should immediately open the high-pressure nitrogen gas tank 37 in the equipment cabin to make the life-saving air bag 42 expand instantaneously to lift the submarine to the sea surface to give the passengers a chance to escape. When the external pressure decreases during the rising process, the air bag will not be inflated and broken by the pressure relief valve 43.

[0018] The outer surface of the ring type piston 3 is in contact with seawater all the year round, and will be attached by marine organisms. When moving forward and backward, the ring type hydraulic cylinder 4 will be damaged. Marine organisms hate the smell of copper oxide, so a layer of copper sheet is covered on the outer surface of the ring type piston 3 to prevent marine organisms from attaching.

[0019] Preferably, a layer of copper sheet is covered on the outer surface of the ring type piston 3.

[0020] The middle channel of the front cabin 2 is preferably provided with a gear, and the electrically-driven jump plate is driven by the gear to extend from the center of the laterally-opened cockpit 1.

[0021] The outer limit ring 26 and the inner limit ring 28 are preferably provided with limit switches.

[0022] The outer and inner circular surfaces of the ring-shaped piston head 16 are preferably provided with annular grooves, and the piston ring sub-rings are embedded in the annular grooves.

[0023] The lower end of the air pipe 11 is preferably provided with a manual gate valve.

[0024] The flanges of the docking device are provided with sealing washers, and the lower part of the cockpit is provided with mooring posts 66.

[0025] The main use of the telescopic submarine transport boat is for submarine sightseeing and tourism, and for transporting islands in the South China Sea in bad sea conditions, and for landing operations when necessary.

[0026] Compared with the related art, the telescopic submarine transport boat has the following characteristics:

[0027] 1. The structure is provided with perfect safety measures, and the safety hazards are eliminated in the detection on land, so that the safety performance is good;

[0028] 2. The structure and operation of the telescopic submarine transport boat are relatively simple, the cabin capacity is large, the personnel and cargo can quickly enter and exit the cabin, and the boat can be mass-produced;

[0029] 3. The three sections of the telescopic submarine transport boat are manufactured and detected in the land workshop, and the whole boat is assembled on land, so that the boat does not occupy the scarce resources of the dock, the berth and the wharf, and is suitable for mass production;

[0030] 4. The underwater displacement of the telescopic submarine transport boat is equal to the water displacement, so that the underwater resistance is small, and the inertia is small because there is no ballast water, so that the underwater navigation performance is good;

[0031] 5. The telescopic submarine transport boat has a shallow draft, and can navigate, berth and unload near the beach;

[0032] 6. When unloading, the bow of the boat is tilted to the beach or the berth, so that the upper part of the cockpit can be laterally and horizontally opened, the electrically-driven jump plate is extended, the personnel and cargo can quickly exit the cabin and land, and the boat can separate from the beach and return to the sea after unloading;

[0033] 7. The telescopic submarine transport boat is sectionally manufactured in the land workshop, and the detection is also sectionally performed in the land workshop to simulate various conditions during underwater navigation, so that time and labor are saved, and safety is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0034] Fig. 1 is a front view of the telescopic submarine transport boat provided by the present application;

[0035] Fig. 2 is a front view of the ring-type hydraulic cylinder;

[0036] Fig. 3 is a front view of the ring-type piston head;

[0037] Fig. 4 is a sectional view along A-A of Fig. 3;

[0038] Fig. 5 is a front view of the piston ring sub-ring;

[0039] Fig. 6 is a B-directional view of Fig. 5;

[0040] Fig. 7 is a front view of the positioning ring;

[0041] Fig. 8 is a C-directional view of Fig. 7;

[0042] Fig. 9 is a schematic view of the front and rear section detection device of the telescopic submarine transport boat provided by the present application;

[0043] Fig. 10 is a schematic view of the middle section detection device of the telescopic submarine transport boat provided by the present application;

[0044] Fig. 11 is an overall sealing and pressure resistance performance inspection arrangement diagram of the telescopic submarine transport boat provided by the present application in the extreme diving depth state of the middle section.

[0045] In the drawings: 1 - cockpit, 2 - front cabin, 3 - ring-type piston, 4 - ring-type hydraulic cylinder, 5 - rear cabin, 6 - motor rudder cabin, 7 - propeller, 8 - horizontal rudder, 9 - electric hinge, 10 - entrance and exit, 11 - air pipe, 12 - electromagnetic valve, 13 - porthole, 14 - connecting flange, 15 - stabilizing sleeve, 16 - ring-type piston head, 17 - clamping groove, 18 - outer annular groove, 19 - inner annular groove, 20 - pressure equalizing hole, 21 - piston ring sub-ring, 22 - outer cylinder body, 23 - inner cylinder body, 24 - outer reinforcing ring, 25 - sealing ring, 26 - outer limiting ring, 27 - inner reinforcing ring, 28 - inner limiting ring, 29 - air vent, 30 - front steel plate, 31 - front watertight door, 32 - rear steel plate, 33 - rear watertight door, 34 - upper cabin plate, 35 - retractable cabin plate, 36 - equipment cabin, 37 - high-pressure nitrogen tank, 38 - lower cabin plate, 39 - rack rail, 40 - battery trolley, 41 - stabilizing rod, 42 - life airbag, 43 - pressure reducing valve, 44 - positioning ring, 45 - connecting hole, 46 - outer positioning circular groove, 47 - inner positioning circular groove, 48 - access hole, 49 - hydraulic pipe, 50 - pump and valve system, 51 - pressure tank, 52 - end cover, 53 - observation window, 54 - hydraulic pipe, 55 - gear pump, 56 - exhaust pipe, 57 - first pressure gauge, 58 - gear pump, 59 - airtight tank, 60 - air outlet, 61 - front stop block, 62 - rear stop block, 63 - thick steel plate, 64 - second pressure gauge, 65 - electrical socket, 66 - mooring post. DETAILED DESCRIPTION

[0046] The application will be described in detail below with reference to the drawings and embodiments. It should be noted that the embodiments in the application and the features in the embodiments can be combined with each other without conflict. For the convenience of description, if the terms “up”, “down”, “left”, “right” appear in the following, they only mean the up, down, left and right directions of the drawings themselves, and do not limit the structure.

[0047] A telescopic diving transport boat is composed of three sections: the front section (pilot cabin and front cabin) is 6.5 meters long and has an inner diameter of 3 meters; the middle section is composed of a ring-shaped piston and a ring-shaped hydraulic cylinder, the ring-shaped piston is 5.06 meters long and has an inner diameter of 3 meters, the ring-shaped hydraulic cylinder is 5.10 meters long, has an outer diameter of 3.2 meters and an inner diameter of 2.8 meters; the rear section is 6.5 meters long. The maximum inner diameter is 3 meters, and the total length is 23.2 meters. The boat is made of steel plates treated by a special heat treatment process, the yield strength of which reaches 1800 MPa, and is fully electrically propelled, equipped with two 100-horsepower direct-current motors, one pilot and one navigator and communication officer.

[0048] The whole boat can carry 50 passengers, 20 in the front cabin, 10 in the reserved space in the ring-shaped piston, and 20 in the rear cabin. If carrying goods, it can carry 30 tons.

[0049] The working diving depth of the boat is 60 meters, the limit diving depth is 100, the underwater cruising speed is 10 knots, and the duration is 10 hours.

[0050] The above is only an embodiment of the application, and does not limit the patent scope of the application. Any equivalent structure or equivalent process transformation using the content of the specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection scope of the application.

Claims

1. A retractable submarine transport boat comprising a cockpit (1), a front cabin (2), a ring-shaped piston (3), a ring-shaped hydraulic cylinder (4), a rear cabin (5), an electric motor rudder cabin (6), a propeller (7) and a horizontal rudder (8), characterized in that: the upper part of the cockpit (1) is laterally openable and closable by an electric hinge (9), and the cockpit (1) and the front cabin (2) of equal diameter are watertightly connected; the top of the front cabin (2) has an entrance (10) and a snorkel (11), the top of the snorkel (11) has an electromagnetic valve (12), both sides have portholes (13), the middle of the outer surface has a horizontal rudder (8), the tail of the front cabin (2) is connected to the front end of the ring-shaped piston (3) through a connecting flange (14) and bolts, and the lower part of the ring-shaped piston (3) is respectively provided with a stabilizing sleeve (15) on both sides; the tail end of the ring-shaped piston (3) is provided with a ring-shaped piston head (16), the outer side of the ring-shaped piston head (16) has a clamping groove (17) matched with the ring-shaped piston (3), the radially outer circular surface has an outer annular groove (18), the radially inner circular surface has an inner annular groove (19), the bottom surfaces of the outer annular groove (18) and the inner annular groove (19) are slightly arc-shaped, the center has a circular pressure equalizing hole (20), and the pressure equalizing hole (20) is matched with a pressure equalizing hole on the inner side of the piston head (16); the outer annular groove (18) and the inner annular groove (19) are used for installing piston rings, the piston rings are composed of a plurality of piston sub-rings (21), the height and width of the rubber piston sub-rings (21) are equal to those of the outer annular groove (18) and the inner annular groove (19), and the curvature is also the same; one end of the piston sub-ring (21) has a protruding part, the other end of the piston sub-ring (21) has a recessed part, a plurality of sub-rings are connected in concave-convex mode to form a complete piston ring, and the piston head (16) installed with the piston sub-ring (21) can slide forward and backward in the ring-shaped hydraulic cylinder (4); the ring-shaped hydraulic cylinder (4) comprises a cylindrical outer cylinder body (22) and an inner cylinder body (23) formed by rolling steel plates, the outer side of the front end of the outer cylinder body (22) has a reinforced ring (24) for bearing tension, and the inner side is provided with a sealing ring (25) for preventing seawater from entering the cylinder and an outer limiting ring (26) for preventing the ring-shaped piston head (16) from moving excessively, the outer side of the front end of the inner cylinder body (23) has a reinforced ring (27) for bearing pressure, the inner side of the inner cylinder body (23) has an inner limiting ring (28) and a vent hole (29), the vent hole (29) is used for the gas in the cylinder to enter and exit when the ring-shaped piston (3) moves, the front end face of the inner cylinder body (23) is sealed by a front steel plate (30) and is provided with a front watertight door (31), the rear end face is sealed by a rear steel plate (32) and is provided with a rear watertight door (33), the lower part is provided with an upper cabin plate (34), and the upper cabin plate (34) is flush with a retractable cabin plate (35) in the ring-shaped piston (3). The space surrounded by the front steel plate (30), the rear steel plate (32) and the upper deck (34) is the equipment cabin (36), the electric control system, the air regenerating device, the air conditioning system and the high-pressure nitrogen tank (37) are installed in the equipment cabin (36), the lower deck (38) is below the upper deck (34), the rack-shaped track (39) is on the lower deck (38), the battery car (40) loaded with the battery group can move and position on the track (39) through the gear-shaped wheels, the stabilizing rods (41) are installed on the lower side walls of the two sides below the lower deck (38), the stabilizing rods (41) slide in the stabilizing sleeves (15) in the ring-shaped piston (3); The lifesaving air bags (42) made of rubberized nylon cloth are installed on the two sides of the outer wall of the ring-shaped hydraulic cylinder (4), one end of the lifesaving air bags (42) is provided with the pressure reducing valve (43), the rear end of the ring-shaped hydraulic cylinder (4) is connected with the positioning ring (44), the positioning ring (44) is a circular ring structure made of steel plate, the outer diameter of the positioning ring (44) is larger than the outer diameter of the outer cylinder body (22), the outer edge of the positioning ring (44) is provided with a plurality of penetrating connecting holes (45), the outer circular groove (46) and the inner circular groove (47) are opened on the cylinder body side surface of the positioning ring (44), The rear end of the outer cylinder body (22) is sealingly embedded in the outer circular groove (46), the rear end of the inner cylinder body (23) is sealingly embedded in the inner circular groove (47), the space in the middle of the two grooves is for the ring-shaped piston head (16) and the hydraulic medium, a plurality of waist-shaped or circular inlet and outlet holes (48) are opened on the positioning ring (44) at the center of the two grooves, for the hydraulic medium to enter and exit the cylinder, the inlet and outlet holes (48) are connected with the pump valve system (50) through the hydraulic pipe (49), the pump valve system (50) is installed in the rear cabin (5), the rear cabin (5) is connected with the positioning ring (44) through the connecting holes (45); The rear cabin (5) is provided with the entrance and exit (10) on the top, and the string windows are on the two sides, the rear cabin (5) is water-tightly connected with the motor rudder cabin (6).

2. The amphibious transport boat of claim 1, wherein, A layer of copper sheet is covered on the outer surface of the ring-shaped piston (3).

3. The amphibious transport boat of claim 1, wherein, The gear is installed on the middle channel of the front cabin (2), the electric jump plate which can be laterally opened is driven to extend from the center of the driving cabin (1) through the gear.

4. The amphibious transport boat of claim 1, wherein, The limit switches are installed on the outer limit ring (26) and the inner limit ring (28).

5. The amphibious transport boat of claim 1, wherein, The radial outer circular surface and the inner circular surface of the ring-shaped piston head (16) are both provided with a ring-shaped groove, and the piston ring sub-ring is embedded in the ring-shaped groove.

6. The amphibious transport boat of claim 1, wherein, The manual gate valve is installed on the lower end of the air pipe (11) in the boat.

7. A detection device for detecting the telescopic diving transport boat according to any one of claims 1-6, characterized in that: The pressure tank (51) for detecting the front section and the rear section and the gear pump (58) and the air-tight storage tank (59) for detecting the middle section are included, the front section includes the driving cabin (1) and the front cabin (2), the rear section includes the rear cabin (5) and the motor rudder cabin (6), the inner diameter and the length of the pressure tank (51) are greater than the outer diameter and the length of the front section, and also greater than the outer diameter and the length of the rear section. One end of the pressure tank (51) is provided with an end cover (52), the middle part of the pressure tank (51) is provided with an observation window (53), the other end of the pressure tank (51) is provided with a hydraulic pipe (54), a gear pump (55) and an electrical socket (65), the upper part of the pressure tank (51) is provided with an exhaust pipe (56) and a first pressure gauge (57), a camera and a sensor are installed inside the pressure tank (51), the middle section includes a ring type piston (3) and a ring type hydraulic cylinder (4) cooperating with each other, the air-tight tank (59) is provided with an air outlet (60), the ring type piston (3) is provided with a front stop block (61) at one end away from the ring type hydraulic cylinder (4), the ring type hydraulic cylinder (4) is provided with a rear stop block (62) at one end away from the ring type piston (3), the outer end of the ring type piston (3) is sealed with a thick steel plate (63), and the ring type hydraulic cylinder (4) is provided with a second pressure gauge (64).

8. A method of inspecting a collapsible submersible vehicle using the inspection apparatus of claim 7, wherein, Comprise: Put the front section and the rear section into the pressure tank (51) with a roller inside, cover the end cover (52), start the gear pump (55) to pressurize the water into the pressure tank (51), the air in the pressure tank (51) is gradually replaced by water, when the water flows out from the exhaust port (56), that is, the air has been exhausted, tighten the end cover of the exhaust port (56), switch to the manual pump to pump water; Observe the first pressure gauge (57), if the water pump does not enter, the value of the first pressure gauge (57) increases, then the detected section does not leak or deform; When the first pressure gauge (57) shows that the working depth or the limit depth pressure value has been reached, stop pumping, close the valve, and after a predetermined time, if the value of the first pressure gauge (57) does not change, then the section passes the pressure resistance and sealing performance test; The middle section detection is carried out in two steps: First step, detection of the submergence and floating operation performance, assemble the ring type piston (3) and the ring type hydraulic cylinder (4), pump the hydraulic medium into the ring type hydraulic cylinder (4) to make the ring type piston (3) extend, when touching the limit switch, stop automatically, open the discharge valve of the pump valve system (50), and the ring type piston (3) retracts under atmospheric pressure, repeat the above steps several times, if the ring type piston (3) moves without jamming, then it passes the submergence and floating operation performance test; Second step, limit depth performance test, use the gear pump (58) to make the ring type piston (3) partially located in the ring type hydraulic cylinder (4), switch to the manual pump to pressurize, make the hydraulic medium be pressurized, the pressure is transmitted to the piston subring (26) through the equalizing hole (20) on the piston head (16), so that the piston subring (26) tightly adheres to the outer cylinder body (22) and the inner cylinder body (23), so that the hydraulic medium does not leak; when the value of the second pressure gauge (64) reaches the set limit depth pressure, use a flaw detector to check whether cracks or damage appear on the inner and outer cylinder walls and the inner and outer reinforcing rings of the ring type hydraulic cylinder (4), if not, then it passes the limit depth test.

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