Double-layer lifting type automatic loading and unloading assault boat transport vehicle
By designing a double-layer liftable automatic loading and unloading assault boat transport vehicle, which adopts upper and lower load-bearing plates and an autonomous loading and unloading mechanism, the problem of low transportation efficiency in existing technologies has been solved, realizing fast and stable assault boat transportation, and adapting to complex road conditions and nighttime environments.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BEIJING XINCHENSHIDAI TECH CO LTD
- Filing Date
- 2026-02-24
- Publication Date
- 2026-04-28
AI Technical Summary
Existing technologies have low transportation efficiency for inflatable boats, cumbersome disassembly and assembly processes, reliance on large equipment, difficulty in responding quickly in complex terrain, and limited capacity per vehicle, which cannot meet the needs of large-scale rescue operations.
Design a double-layer liftable automatic loading and unloading assault boat transport vehicle. It adopts a two-layer load-bearing plate structure and is equipped with lifting and loading/unloading mechanisms. The assault boat and trailer frame are loaded and unloaded as a whole through electro-hydraulic push rods. Combined with a four-wheel drive chassis and lighting system, it can adapt to complex road conditions and has autonomous loading and unloading functions.
It enables rapid loading and unloading of assault boats without disassembling them, increases the capacity of a single transport, shortens rescue preparation time, enhances the stability of the equipment and its adaptability to road conditions, and ensures safe transport at night and in complex environments.
Smart Images

Figure CN121929048A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of emergency rescue transportation equipment technology, specifically a double-layer liftable automatic loading and unloading assault boat transport vehicle. Background Technology
[0002] In water emergency rescue operations, inflatable boats are core rescue equipment, and their transportation efficiency directly affects the speed of rescue response. Currently, when transporting multiple inflatable boats, the hull, outboard motor (engine), and trailer frame of the inflatable boats must first be disassembled and separated for separate loading and transportation. After arriving at the rescue site, large equipment such as cranes and loading vehicles are needed to unload the boats and reassemble the components before they can be put into rescue operations.
[0003] The existing technologies described above have the following drawbacks: First, the disassembly and assembly processes are cumbersome and time-consuming, preventing timely rescue operations and delaying rescue opportunities. Second, they rely on large loading and unloading equipment, which is difficult to deploy quickly in complex terrain or remote rescue sites, further limiting rescue efficiency. Third, components are prone to collision damage during disassembly and transportation, affecting the performance of the inflatable boats. Fourth, the transport capacity of a single transport vehicle is limited, making it difficult to meet the equipment transport needs of large-scale rescue operations. Therefore, there is an urgent need for a double-decker, liftable, automatic loading and unloading inflatable boat transport vehicle that requires no disassembly, can autonomously load and unload components, has a large transport capacity, and is adaptable to complex road conditions. Summary of the Invention
[0004] (a) Technical problems to be solved To address the shortcomings of existing technologies, this invention provides a double-layer liftable automatic loading and unloading assault boat transport vehicle, which possesses the aforementioned advantages and solves the problems mentioned in the background art.
[0005] (II) Technical Solution To achieve the above objectives, the present invention provides the following technical solution: a double-layer liftable automatic loading and unloading assault boat transport vehicle, comprising a transport vehicle body, a lifting mechanism, a loading and unloading mechanism, and an assault boat trailer frame. The lifting mechanism includes an upper plate, a lower plate, a vertical plate, a first fixing block, a second fixing block, a rectangular frame, an extension rod, a mating block, and a first electro-hydraulic push rod. A mating block is installed on one side of both the rectangular frame and the extension rod. The vertical plate is rotatably connected to both sides of the upper plate via a shaft. The second fixing block is rotatably connected to one side of the rectangular frame via a shaft, and the first fixing block is rotatably connected to one side of the extension rod via a shaft. The loading and unloading mechanism includes a second electro-hydraulic push rod, an extension plate, a baffle, and a winch. The second electro-hydraulic push rod is rotatably connected to the interior of the transport vehicle body via a shaft, and the extension plate is rotatably connected to the side of the lower plate via a shaft.
[0006] Preferably, the first fixing block is installed on the top of the upper plate, the vertical plate and the second fixing block are both installed on the top of the lower plate, the end of the extension rod away from the first fixing block is inserted into the inside of the rectangular frame, and the upper plate is positioned above the lower plate.
[0007] Preferably, there are several mating blocks, and both the fixed end and the movable end of the first electro-hydraulic actuator are fixedly connected to the mating blocks.
[0008] Preferably, the lower plate is rotatably connected to the movable end of the second electro-hydraulic push rod and the transport vehicle body via a shaft, and the bottom of the lower plate abuts against the transport vehicle body.
[0009] Preferably, the baffle is installed at the bottom of the lower plate, and the top of the baffle abuts against the bottom of the extension plate. The winch is installed on the top of the lower plate by bolts. The winch includes a winch and a wire rope. The wire rope is mounted on the winch, and the end of the wire rope is provided with a connecting component for fixing the trailer frame of the assault boat.
[0010] Preferably, the roof of the transport vehicle is equipped with a long row of LED red warning lights, and the exterior of the transport vehicle is equipped with warning lights, strobe lights, external lighting lights, and warning lights.
[0011] Preferably, equipment boxes are installed on the top and sides of the transport vehicle body, and the equipment boxes are equipped with pull-out drawers.
[0012] Preferably, the inflatable boat trailer frame includes a frame, wheels, casters, a first auxiliary wheel, and a second auxiliary wheel. Wheels are rotatably connected to both sides of the frame via axles. Casters are provided at the bottom of the frame. The first auxiliary wheel is rotatably connected to the top of the frame via axles. The second auxiliary wheel is provided at the end of the frame. There are several first auxiliary wheels, and these first auxiliary wheels are inclined towards the middle of the frame.
[0013] Preferably, a horizontal ring is installed on one side of both the upper and lower layers, and the size of the inflatable boat trailer frame is adapted to the upper and lower layers respectively.
[0014] (III) Beneficial Effects Compared with the prior art, the present invention provides a double-layer liftable automatic loading and unloading assault boat transport vehicle, which has the following beneficial effects: 1. This double-decker, liftable, automatic loading and unloading assault boat transport vehicle eliminates the need to disassemble the assault boat hull, outboard motor, and trailer frame. It enables the overall loading and unloading of the assault boat along with the trailer frame, completely eliminating the cumbersome disassembly and on-site assembly steps of traditional transportation methods. It does not rely on large external equipment such as cranes or loading vehicles, and can complete loading and unloading operations solely through the vehicle's own equipment. Even in complex terrain or remote rescue sites, it can quickly deploy equipment, significantly shortening rescue preparation time and ensuring immediate deployment to water rescue operations.
[0015] 2. This double-layer liftable automatic loading and unloading assault boat transport vehicle adopts a double-layer load-bearing plate structure, with a rated load of over 3 tons per layer. It can transport two assault boats simultaneously, doubling the transport capacity compared to traditional single-vehicle transport vehicles. The double-layer design significantly improves the single-trip transport efficiency of rescue equipment without increasing the space occupied by the vehicle. It can better meet the needs of large-scale water rescue scenarios where multiple assault boats work together, reducing the number of transport trips and lowering rescue transport costs.
[0016] 3. This double-layer liftable automatic loading and unloading assault boat transport vehicle, together with the horizontal rings on both sides of the platform and the self-locking straps on the vehicle, can firmly fix the assault boat and trailer frame. Even if the vehicle is traveling at high speed, braking suddenly, or bumping in complex road conditions, it can effectively prevent the boat from shifting or colliding, ensuring the integrity of precision equipment such as assault boats and outboard motors during transportation and reducing the risk of equipment damage.
[0017] 4. This double-decker liftable automatic loading and unloading assault boat transport vehicle features a four-wheel drive chassis design, which not only provides excellent urban road passability but also easily handles complex unpaved roads such as mud and rugged terrain, breaking the limitations of traditional transport vehicles on road conditions.
[0018] 5. This double-decker, liftable, automatic loading and unloading assault boat transport vehicle is equipped with a lighting system consisting of LED red long row warning lights, strobe lights, external lighting lights, and warning lights. This system fully meets the lighting and warning needs in special environments such as nighttime and foggy weather, ensuring driving safety and operational visibility during transportation and loading / unloading. Attached Figure Description
[0019] Figure 1 This is a three-dimensional front view schematic diagram of the structure of the present invention; Figure 2 This is a three-dimensional structural diagram of the lifting mechanism of the present invention; Figure 3 This is a three-dimensional cross-sectional structural diagram of the lifting mechanism of the present invention; Figure 4 This is a schematic diagram of the three-dimensional structure of the winch of the present invention; Figure 5 This is a three-dimensional structural diagram of the inflatable boat trailer frame of the present invention; Figure 6 This is a frontal cross-sectional view of the present invention.
[0020] In the diagram: 1. Transport vehicle body; 2. Lifting mechanism; 201. Upper shelf; 202. Lower shelf; 203. Vertical plate; 204. First fixing block; 205. Second fixing block; 206. Rectangular frame; 207. Extension rod; 208. Matching block; 209. First electro-hydraulic actuator; 3. Loading and unloading mechanism; 301. Second electro-hydraulic actuator; 302. Extension plate; 303. Baffle; 304. Winch; 3041. Hoist; 3042. Wire rope; 4. Assault boat trailer frame; 401. Frame; 402. Wheels; 403. Casters; 404. First auxiliary wheel; 405. Second auxiliary wheel; 5. LED red long row of warning lights; 6. Equipment box; 7. Pull-out drawer; 8. Horizontal ring. Detailed Implementation
[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0022] This invention is applicable to severe flooding in low-lying urban areas, underground parking garages, and riverside areas caused by extreme weather such as summer rainstorms and typhoons, resulting in people being trapped and traffic being disrupted, requiring the rapid deployment of assault boats for waterborne search and rescue and personnel transfer operations; and to sudden emergencies such as people falling into the water, boats capsizing, and dam leakage in natural rivers and artificial lakes, where rescue sites are often located in remote suburbs or wilderness areas with complex road conditions (such as rural dirt roads and muddy sections), requiring the rapid deployment of assault boats for search and rescue and material transportation operations.
[0023] Please see Figures 1 to 6 This invention provides a technical solution: a double-layer liftable automatic loading and unloading assault boat transport vehicle, comprising a transport vehicle body 1, a lifting mechanism 2, a loading and unloading mechanism 3, and an assault boat trailer frame 4. The lifting mechanism 2 includes an upper plate 201, a lower plate 202, a vertical plate 203, a first fixing block 204, a second fixing block 205, a rectangular frame 206, an extension rod 207, a mating block 208, and a first electro-hydraulic push rod 209. The rectangular frame 206 and the extension rod 207 each have a mating block 208 installed on one side. The upper plate 201... Both sides of 01 are rotatably connected to vertical plates 203 via shafts. One side of rectangular frame 206 is rotatably connected to a second fixing block 205 via shafts. One side of extension rod 207 is rotatably connected to a first fixing block 204 via shafts. Loading and unloading mechanism 3 includes a second electro-hydraulic push rod 301, an extension plate 302, a baffle 303, and a winch 304. The interior of transport vehicle body 1 is rotatably connected to the second electro-hydraulic push rod 301 via shafts. The side of lower plate 202 is rotatably connected to an extension plate 302 via shafts.
[0024] Please see Figures 1 to 6 The first fixing block 204 is installed on the top of the upper plate 201, the vertical plate 203 and the second fixing block 205 are both installed on the top of the lower plate 202, and the end of the extension rod 207 away from the first fixing block 204 is inserted into the interior of the rectangular frame 206. The upper plate 201 is located above the lower plate 202.
[0025] Specifically, through the cooperation of the upper plate 201 and the lower plate 202 of the lifting mechanism 2, the two load-bearing plates are set in parallel and can independently complete the loading of the assault boat. The rated load of each load-bearing plate is not less than 3 tons, which can meet the weight requirements of a conventional assault boat together with the assault boat trailer frame 4.
[0026] Please see Figures 1 to 6 There are several mating blocks 208, and the fixed end and the movable end of the first electro-hydraulic actuator 209 are fixedly connected to the mating blocks 208.
[0027] Specifically, the first electro-hydraulic push rod 209 is designed to facilitate the tilting and lowering of the upper plate 201, and to facilitate the loading and unloading of the assault boat trailer frame 4 onto the upper plate 201.
[0028] Please see Figures 1 to 6 The lower plate 202 is rotatably connected to the movable end of the second electro-hydraulic push rod 301 and the transport vehicle body 1 via shafts, and the bottom of the lower plate 202 abuts against the transport vehicle body 1.
[0029] Specifically, the second electro-hydraulic actuator 301 facilitates the tilting of the entire lifting mechanism 2 and the loading and unloading of the assault boat trailer frame 4.
[0030] Please see Figures 1 to 4 The baffle 303 is installed at the bottom of the lower plate 202, and the top of the baffle 303 abuts against the bottom of the extension plate 302. The winch 304 is installed on the top of the lower plate 202 by bolts. The winch 304 includes a winch 3041 and a wire rope 3042. The wire rope 3042 is mounted on the winch 3041, and the end of the wire rope 3042 is provided with a connecting component for fixing the assault boat trailer frame 4.
[0031] Specifically, the baffle 303 is designed to ensure that the extension plate 302 remains parallel to the lower plate 202 after it is suspended in the air. After the loading and unloading mechanism 3 is tilted, the extension plate 302 can easily contact the ground, which facilitates the loading and unloading of the assault boat trailer frame 4. The winch 304 is designed to facilitate the movement of the assault boat trailer frame 4 by pulling the wire rope 3042.
[0032] Please see Figures 1 to 6 The roof of the transport vehicle body 1 is equipped with LED red long row warning lights 5, and the exterior of the transport vehicle body 1 is equipped with warning lights, strobe lights, external lighting lights and warning lights.
[0033] Specifically, the LED red long row warning lights 5, along with strobe lights, external lighting, and warning lights, can fully meet the lighting and warning needs for operations in special environments such as nighttime and foggy weather, ensuring the safety of transportation and loading / unloading processes.
[0034] Please see Figures 1 to 6 Equipment boxes 6 are installed on the top and sides of the transport vehicle body 1, and the equipment boxes 6 have pull-out drawers 7 inside.
[0035] Specifically, the equipment box 6 is designed to hold various life-saving equipment and rescue supplies, and the pull-out drawer 7 has a double-sided opening design, which makes it easy for operators on both sides of the vehicle to quickly retrieve and put in supplies at the same time, thus improving the efficiency of rescue preparation.
[0036] Please see Figure 5 The inflatable boat trailer frame 4 includes a frame 401, wheels 402, casters 403, first auxiliary wheels 404, and second auxiliary wheels 405. The two sides of the frame 401 are rotatably connected to the wheels 402 via axles. The bottom of the frame 401 is provided with casters 403. The top of the frame 401 is rotatably connected to the first auxiliary wheels 404 via axles. The end of the frame 401 is provided with second auxiliary wheels 405. There are several first auxiliary wheels 404, and the several first auxiliary wheels 404 are inclined towards the middle of the frame 401.
[0037] Specifically, the wheels 402, casters 403, first auxiliary wheel 404, and second auxiliary wheel 405 of the assault boat trailer frame 4 facilitate the movement of the assault boat trailer frame 4 and make it easy to move and place the assault boat onto the assault boat trailer frame 4.
[0038] Please see Figures 1 to 6 Both the upper plate 201 and the lower plate 202 have horizontal rings 8 installed on one side, and the size of the assault boat trailer frame 4 is adapted to the upper plate 201 and the lower plate 202 respectively.
[0039] Specifically, the combination of the horizontal ring 8 and the tie-down straps placed with the vehicle facilitates securing the inflatable boat trailer frame 4 to the upper plate 201 and the lower plate 202. The tie-down straps can also secure the inflatable boat to the inflatable boat trailer frame 4.
[0040] In this invention, the first electro-hydraulic actuator 209 is model DYTZ3000-1800 / 110, with a rated thrust of 30kN, a rated pull of 24kN, a stroke of 1800mm, and a protection rating of IP65; the second electro-hydraulic actuator is model DYTZ5000-2000 / 120, with a rated thrust of 50kN, a rated pull of 40kN, a stroke of 2000mm, and a protection rating of IP65; the LED red long-row warning light 5 is model LTE-1200R high-power LED long-row warning light, with dimensions of 1200mm×300mm×280mm, a light source type of high-brightness SMD LED, a red light wavelength of 620-630nm, and a power of 100W; a strobe light... The first type of vehicle-mounted LED strobe light is model LTE-5082, with dimensions of 100mm×80mm×50mm, light source type: LED array, red / blue light optional, and power: 20W; the second type of vehicle-mounted LED searchlight is model LTB-8000, with dimensions of 200mm×150mm×120mm, light source type: high-power LED, white light wavelength 5500-6000K, power: 30W, illumination distance: ≥50m, and lighting mode: high / low light adjustable; the third type of vehicle-mounted warning light is model LTE-307, a small LED warning light with dimensions of 80mm×60mm×40mm, light source type: LED, red light, and flashing mode: constant / slow flash optional. In use, the transport vehicle body 1 adopts a four-wheel drive structure, possessing good urban road passability and adaptability to complex road conditions. It can travel on unpaved roads such as mud and rugged terrain, ensuring that rescue equipment can quickly reach various rescue sites and move via the transport vehicle body 1. The rear of the vehicle is designed as a non-enclosed structure and equipped with a sliding rail, which is compatible with the inflatable boat trailer frame 4, providing guidance for loading and unloading the trailer frame and reducing frictional resistance. The transport vehicle body 1 is equipped with a lighting system consisting of LED red long row warning lights 5, strobe lights, external lighting lights, and warning lights, fully meeting the lighting and warning needs in special environments such as night and foggy weather, ensuring driving safety and operational visibility during transportation and loading / unloading; the driver's cab The internal radio base station supports real-time communication, ensuring smooth information flow between the rescue site and the command center, facilitating overall coordination and dispatch; the emergency rescue paint that meets national standards can improve the vehicle's visibility at the rescue site, avoid operational conflicts, and further ensure the safety and orderliness of rescue operations; the operator checks the vehicle's condition: confirming that the four-wheel drive chassis has normal tire pressure, the hydraulic system has sufficient oil, the winch 304's wire rope 3042 is unworn and broken, and the self-locking straps are intact; the assault boat is placed on the assault boat trailer frame 4, the first auxiliary wheel 404 abuts against the side of the assault boat, the second auxiliary wheel 405 abuts against the end of the assault boat, and the assault boat is tied to the assault boat trailer frame 4 with the straps;During loading, the movable end of the second electro-hydraulic push rod 301 extends, causing the loading and unloading mechanism 3 to tilt and rotate, bringing the end of the extension plate 302 into contact with the ground. Then, the movable end of the first electro-hydraulic push rod 209 retracts, causing a portion of the mating block 208 to move the extension rod 207 towards the interior of the rectangular frame 206. This causes the upper plate 201 to rotate around the point where the vertical plate 203 and the upper plate 201 rotate, resulting in the upper plate 201 tilting and lowering, bringing the end of the upper plate 201 into contact with the lower plate 202. The winch 304... The steel wire rope 3042 is connected to the inflatable boat trailer frame 4. The winch 3041 winds up the steel wire rope 3042, thereby moving the inflatable boat trailer frame 4. The universal wheels 403 and 402 facilitate the movement of the inflatable boat trailer frame 4, allowing it to move onto the extension plate 302, abut against the lower plate 202, and finally reach the upper plate 201. The horizontal ring 8 and the binding straps secure the inflatable boat trailer frame 4 to the upper plate 201. Then, the first electro-hydraulic push rod 2... The movable end of 09 extends, causing the extension rod 207 to move along the length of the rectangular frame 206, resetting the upper plate 201. This process is repeated, connecting the wire rope 3042 on the winch 304 to another inflatable boat trailer frame 4, pulling the trailer frame 4 onto the lower plate 202. The trailer frame 4 is then secured to the lower plate 202 by the cooperation of the horizontal ring 8 and the binding straps. Afterwards, the movable end of the second electro-hydraulic push rod 301 retracts, resetting the entire lifting mechanism 2, and aligning the lower plate 202 with the transport vehicle. The main body 1 abuts against the ground, raising the extension plate 302 away from the ground. The baffle 303 supports the extension plate 302, ensuring it is level with the lower plate 202 for easy loading. Conversely, it facilitates lowering the inflatable boat trailer frame 4. The equipment box 6 holds various life-saving equipment and rescue supplies. It is equipped with a pull-out drawer 7, which opens from both sides, allowing operators on both sides of the vehicle to quickly access supplies simultaneously, improving rescue preparation efficiency.
[0041] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one" does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0042] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A double-layer liftable automatic loading and unloading assault boat transport vehicle, comprising a transport vehicle body, a lifting mechanism, a loading and unloading mechanism, and an assault boat trailer frame, characterized in that: The lifting mechanism includes an upper plate, a lower plate, a vertical plate, a first fixed block, a second fixed block, a rectangular frame, an extension rod, a mating block, and a first electro-hydraulic actuator. The rectangular frame and the extension rod are each fitted with a mating block on one side. The upper plate is rotatably connected to the vertical plate on both sides via shafts. The rectangular frame is rotatably connected to the second fixed block on one side via shafts. The extension rod is rotatably connected to the first fixed block on one side via shafts. The loading and unloading mechanism includes a second electro-hydraulic actuator, an extension plate, a baffle, and a winch. The second electro-hydraulic actuator is rotatably connected to the interior of the transport vehicle body via shafts. The lower plate is rotatably connected to the side via shafts.
2. The double-layer liftable automatic loading and unloading assault boat transport vehicle according to claim 1, characterized in that: The first fixing block is installed on the top of the upper plate, and the vertical plate and the second fixing block are both installed on the top of the lower plate. The end of the extension rod away from the first fixing block is inserted into the inside of the rectangular frame, and the upper plate is located above the lower plate.
3. The double-layer liftable automatic loading and unloading assault boat transport vehicle according to claim 1, characterized in that: There are several mating blocks, and both the fixed end and the movable end of the first electro-hydraulic actuator are fixedly connected to the mating blocks.
4. The double-layer liftable automatic loading and unloading assault boat transport vehicle according to claim 1, characterized in that: The lower plate is rotatably connected to the movable end of the second electro-hydraulic push rod and the transport vehicle body via shafts, and the bottom of the lower plate abuts against the transport vehicle body.
5. A double-layer liftable automatic loading and unloading assault boat transport vehicle according to claim 1, characterized in that: The baffle is installed at the bottom of the lower plate, and the top of the baffle abuts against the bottom of the extension plate. The winch is installed on the top of the lower plate by bolts. The winch includes a winch and a wire rope. The wire rope is set on the winch, and the end of the wire rope is provided with a connecting part for fixing the assault boat trailer frame.
6. The double-layer liftable automatic loading and unloading assault boat transport vehicle according to claim 1, characterized in that: The transport vehicle is equipped with a long row of red LED warning lights on its roof, and the exterior of the transport vehicle is equipped with warning lights, strobe lights, external lights, and alert lights.
7. A double-layer liftable automatic loading and unloading assault boat transport vehicle according to claim 1, characterized in that: Equipment boxes are installed on the top and sides of the transport vehicle, and the inside of the equipment boxes is equipped with pull-out drawers.
8. A double-layer liftable automatic loading and unloading assault boat transport vehicle according to claim 1, characterized in that: The inflatable boat trailer frame includes a frame, wheels, casters, first auxiliary wheels, and second auxiliary wheels. Wheels are rotatably connected to both sides of the frame via axles. Casters are installed at the bottom of the frame. First auxiliary wheels are rotatably connected to the top of the frame via axles. Second auxiliary wheels are installed at the ends of the frame. There are several first auxiliary wheels, and these first auxiliary wheels are inclined towards the middle of the frame.
9. A double-layer liftable automatic loading and unloading assault boat transport vehicle according to claim 1, characterized in that: Both the upper and lower decks have horizontal rings installed on one side, and the size of the assault boat trailer frame is adapted to the upper and lower decks respectively.