CN221138497U - Cut-off device and amphibious vehicle - Google Patents

Abstract

The utility model relates to the technical field of vehicle accessories, in particular to a cut-off device and an amphibious vehicle; the cut-off device comprises a cut-off piece, a sliding supply unit, a connecting unit and a driving unit, wherein the cut-off device is arranged on the vehicle body, the sliding supply unit can be arranged on one side of a perforation of the vehicle body and is in sealing fit with the vehicle body when the cut-off device is arranged, the sliding supply unit is provided with a sliding supply perforation which penetrates through the sliding supply perforation and the perforation of the vehicle body, the driving unit is arranged in the vehicle body and is connected with the connecting unit, the cut-off piece is driven to stretch out or retract navigation equipment, the vehicle body can be adapted to water navigation, and the sealing unit is further arranged on the cut-off device, so that seawater which is permeated by the sliding supply perforation of the navigation equipment can not enter the inside of the navigation equipment to be in contact with the driving unit, and the service life of the cut-off device is prolonged.

Description

Cut-off device and amphibious vehicle

Technical Field

The utility model relates to the technical field of vehicle accessories, in particular to a cut-off device and an amphibious vehicle.

Background

_{Water and its preparation method} An amphibious vehicle is a special vehicle which can travel on land and on water. The water rapidity is an important index for evaluating the war skill of the amphibious vehicle. Therefore, when the amphibious vehicle is designed, the reduction of the water navigation resistance is one of important ways for improving the navigation speed. The resistance of water sailing is reduced, and the main design direction is the design of light weight, hull molded lines and stern plugboards.

The utility model discloses a take tail picture peg and high performance compound yacht of horizontal wing of patent document of publication number CN110588875A, at the stage of the high-speed coasting of yacht, retrieve tail picture peg to tail shrouding in, put down the horizontal wing, adjust the incoming flow attack angle of horizontal wing, utilize the horizontal wing to cut the dynamic lift that the water surface produced and rise the hull, and then reduce hull and water's area of contact, reach the effect of further reducing navigation resistance, the horizontal wing provides extra balancing moment for the yacht at the high-speed navigation in-process simultaneously, improve the stability of yacht.

The recovery or the extension of the tail flashboard of the existing yacht is mainly driven by a hydraulic driving cylinder, the hydraulic driving cylinder is fixed at the stern of the yacht and connected with the tail flashboard by a driving rod penetrating through a perforation of the stern of the yacht, and in the sailing process of the yacht, seawater easily enters the interior of the yacht through the perforation of the stern of the yacht and contacts with the hydraulic driving cylinder, so that the hydraulic driving cylinder is easily damaged due to seawater erosion.

Disclosure of utility model

The utility model aims to overcome the technical defects, and provides a cut-off device and an amphibious vehicle, which solve the technical problem that a driving module of the cut-off device in the prior art is easy to be corroded by seawater.

In order to achieve the technical purpose, the technical scheme of the utility model provides a cut-off device, which comprises:

A closure member for closure;

The sliding supply unit is used for being sealed and attached to the water navigation equipment and is provided with a sliding supply perforation penetrating through the sliding supply unit;

one end of the connecting unit is connected with the intercepting piece, and the other end of the connecting unit is inserted into the sliding hole;

The driving unit is connected with the connecting unit and is used for enabling the connecting unit to drive the intercepting piece to extend or retract the water navigation equipment by driving the connecting unit;

The sealing unit is enclosed in the connecting unit, one end of the sealing unit is in sealing fit with the connecting unit, and the other end of the sealing unit is in sealing fit with the sliding supply unit.

Optionally, the sealing unit includes a soft connecting sleeve, one end of the soft connecting sleeve is fixed on the sliding supply unit and is in sealing connection with the sliding supply unit, and the other end of the soft connecting sleeve is fixed on the connecting unit and is in sealing connection with the connecting unit.

Optionally, the soft connecting sleeve is sleeved on the surface of the connecting unit, the sealing unit further comprises a first clamp, and the first clamp is sleeved on one end, close to the connecting unit, of the soft connecting sleeve and is used for limiting the soft connecting sleeve.

Optionally, the sealing unit further comprises a mounting ring and a sealing ring, wherein the mounting ring is located between the soft connecting sleeve and the soft connecting sleeve, and the sealing ring is installed on the mounting ring and is in sealing fit with the sliding supply unit.

Optionally, the mounting ring is provided with an annular mounting groove, and the sealing ring is fixed in the annular mounting groove.

Optionally, a plurality of sealing edges are arranged at intervals on one side, close to the sliding unit, of the sealing ring, and the sealing edges are in sealing fit with the surface of the sliding unit.

Optionally, the sealing unit further includes a second clamp, and the second clamp is sleeved on one end of the soft connecting sleeve, which is close to the sliding unit, and is used for limiting the soft connecting sleeve.

Optionally, the sliding unit comprises a sliding part and a sealing pad, wherein the sliding part is fixedly connected to the water navigation equipment, and the sealing pad is arranged between the sliding part and the water navigation equipment and is used for sealing a gap between the sliding part and the water navigation equipment.

Optionally, the closure member includes guard frame, closure plate and spacing clamp, guard frame fixed connection is in the stern of navigation on water equipment, the guard frame is provided with downside open-ended and holds the chamber, spacing clamp is located hold the inside in chamber and be fixed in the top of guard frame, the closure plate is located hold the intracavity and be fixed in the lower extreme of connecting unit, the closure plate accessible drive unit drive get into the inboard of spacing clamp or via hold the downside opening in chamber stretches out hold the chamber.

Compared with the prior art, the cut-off device provided by the utility model has the beneficial effects that: through setting up closure part, supply smooth unit, connecting element and drive unit, when carrying out the installation of cut-off equipment, can be with supply smooth unit to install in perforation one side of aquatic navigation equipment and with aquatic navigation equipment seal laminating, supply smooth unit to be provided with the confession that runs through smooth perforation, the connecting element passes and supplies smooth perforation and the perforation of aquatic navigation equipment back and be connected with the closure part, drive unit installs in aquatic navigation equipment's inside and is connected with the connecting element, at the navigation stage of equipment, drive unit is through the drive to the connecting element, drive closure part stretches out or withdraws navigation equipment, can make navigation equipment adapt to on the water, owing to the cut-off equipment still is provided with sealing unit, sealing unit enclose in connecting element, and both ends respectively with connecting element and supply smooth unit seal laminating, seal through confession smooth unit and navigation equipment and sealing unit's seal, make the perforation through supply smooth perforation of smooth unit and supply smooth unit infiltration sea water of sea water unable entering navigation equipment contact with the drive unit, and then can effectively avoid the drive unit to suffer sea water corrosion and damage, promote the life of device.

In order to achieve the technical purpose, the technical scheme of the utility model provides an amphibious vehicle, which comprises a vehicle body and a cut-off device, wherein the vehicle body is provided with a perforation, a sliding supply unit is in sealing fit with the vehicle body and is positioned on the periphery of the perforation, and a driving unit is fixed in the vehicle body and penetrates through the perforation.

Compared with the prior art, the amphibious vehicle provided by the utility model has the beneficial effects that: this amphibious vehicle is through setting up the cut-off equipment at the vehicle body, the drive of accessible drive unit to the closure piece makes amphibious vehicle be suitable for the navigation on water, through the sealed laminating of supply smooth unit and vehicle body to and the sealed effect of sealing unit, make the perforation through the vehicle body and supply smooth perforation infiltration's of confession smooth unit sea water unable entering vehicle body's inside, and then can effectively avoid the cut-off equipment of amphibious vehicle to take place to damage by the sea water corruption, the life of cut-off equipment.

Drawings

Fig. 1 is a schematic structural diagram of a shutoff device according to an embodiment of the present utility model.

Fig. 2 is a front view of a hidden driving unit and a closure member of a closure device according to an embodiment of the present utility model.

Fig. 3 is a cross-sectional view taken along line A-A in fig. 2.

Fig. 4 is a schematic structural view of an amphibious vehicle according to an embodiment of the utility model.

Wherein, each reference sign in the figure:

10-closure member 11-protective frame 12-closure plate

13-Limiting clamp 20-sliding unit 21-sliding perforation

22-Slide-supplying member 23-gasket 30-connecting unit

31-Connecting rod 32-joint 40-driving unit

41-Hydraulic electric cylinder 50-sealing unit 51-soft connecting sleeve

52-First clamp 53-mounting ring 54-sealing ring

55-Second clip 60-vehicle body 61-accommodation chamber

70-Cut-off device 531-annular mounting groove 541-sealing edge.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The embodiment of the present utility model provides a cut-off apparatus, as shown in fig. 1 to 4, comprising a cut-off member 10, a slide supply unit 20, a connection unit 30, a driving unit 40, and a sealing unit 50, the cut-off member 10 being used for cut-off; the sliding supply unit 20 is used for being in sealing fit with the water navigation equipment, and the sliding supply unit 20 is provided with a sliding supply perforation 21 which penetrates through; one end of the connection unit 30 is connected with the intercepting member 10, and the other end of the connection unit 30 passes through the sliding perforated hole 21 and is slidably connected with the sliding perforated hole 21; the driving unit 40 is connected with the connecting unit 30, and is used for driving the connecting unit 30 to drive the intercepting piece 10 to extend out or retract into water to navigate on the water by driving the connecting unit 30; the sealing unit 50 encloses the connecting unit 30, one end of the sealing unit 50 is in sealing fit with the connecting unit 30, and the other end of the sealing unit 50 is in sealing fit with the sliding unit 20.

Specifically, the cut-off device is provided with the cut-off piece 10, the sliding supply unit 20, the connecting unit 30 and the driving unit 40, when the cut-off device is installed, the sliding supply unit 20 can be installed on one side of a perforation of the water navigation device and is in sealing fit with the water navigation device, the sliding supply unit 20 is provided with the sliding supply perforation 21 penetrating through the sliding supply perforation 21 and the perforation of the water navigation device, the connecting unit 30 penetrates through the sliding supply perforation 21 and is connected with the cut-off piece 10, the driving unit 40 is installed in the water navigation device and is connected with the connecting unit 30, in the navigation stage of the device, the driving unit 40 drives the cut-off piece 10 to stretch out or retract the navigation device through driving of the connecting unit 30, so that the navigation device can be suitable for the water navigation device, and as the cut-off device is further provided with the sealing unit 50, the sealing unit 50 is enclosed in the connecting unit 30, and two ends of the cut-off device are respectively in sealing fit with the connecting unit 20, and the sealing of the sealing unit 50 are used for sealing the sliding supply unit 20 and the navigation device, so that the inside of the navigation device, which cannot enter the navigation device through the perforation of the sliding supply perforation 21 of the sliding supply unit 20, is in the device, is in contact with the driving unit 40, and the sea water can not enter the navigation device, and the sea water can be effectively used for lifting the sea water, and the sea water can be prevented from being damaged, and further, and the service life of the cut-off device can be damaged.

It will be appreciated that the water craft may be any craft capable of craft, amphibious vehicle or the like which craft in water.

In this embodiment, in the starting stage of the water navigation device on water, the driver presses the button to make the driving unit 40 drive the closure member 10 to extend out of the stern of the navigation device by a certain length; the navigation equipment starts to increase the power output and start to slide, because the bottom water flow of the navigation equipment affects, the head of the navigation equipment is lifted, the stern is sunk, the water flow direction of the stern of the navigation equipment is changed by the extending part of the interception piece 10, the upward dynamic lift force acting on the stern of the navigation equipment is generated, the stern of the navigation equipment is lifted, the whole navigation equipment overcomes the sliding resistance, and the navigation equipment is convenient to slide; when the navigation device enters the acceleration stage, the water flow direction at the extending part of the intercepting piece 10 is changed, so that not only upward dynamic lift force is generated, but also resistance opposite to the traveling direction of the navigation device is generated, and the speed of the acceleration stage is influenced, so that a button needs to be pressed down, the driving unit 40 drives the intercepting piece 10 to retract into the stern of the navigation device, the acceleration of the navigation device is facilitated, and the navigation device is adapted to the navigation on water.

It will be appreciated that the size and shape of the closure member 10 may be adapted to the shape, power requirements, etc. of the water craft.

In one embodiment, as shown in fig. 1 and 4, the intercepting member 10 includes a protective frame 11, an intercepting plate 12, and a limiting clip 13, the protective frame 11 is fixedly coupled to a stern of the water craft, the protective frame 11 is provided with a receiving chamber 61 having a lower side opened, the limiting clip 13 is positioned inside the receiving chamber 61 and is fixed to a top of the protective frame 11, the intercepting plate 12 is positioned inside the receiving chamber 61 and is fixed to a lower end of the coupling unit 30, and the intercepting plate 12 may be driven into an inner side of the limiting clip 13 by the driving unit 40 or protrude out of the receiving chamber 61 through the lower side opening of the receiving chamber 61.

Specifically, during the starting and sliding stage of the water craft, the closure plate 12 is driven by the driving unit 40 to extend out of the accommodating cavity 61 from the lower opening of the accommodating cavity 61 to close the water, so that the water flow direction of the stern of the craft is changed, an upward dynamic lift force acting on the stern of the craft is generated, the stern of the craft is lifted, and further the starting and sliding are facilitated. When the water navigation equipment is in an acceleration stage, the driving unit 40 drives the closure plate 12 to be recycled into the accommodating cavity 61 and enter the inner side of the limiting clamp 13, the closure plate 12 enters the accommodating cavity 61, the edge of the protection frame 11 can scrape off foreign matters on the surface of the closure plate 12, the closure plate 12 is guaranteed to be clean, the closure plate 12 can be enclosed when the closure plate 12 enters the accommodating cavity 61, the closure plate 12 is protected, the closure plate 12 is prevented from being collided by obstacles when the navigation equipment is overturned over obstacles, the limiting clamp 13 can limit the two sides of the closure plate 12, the closure plate 12 can be prevented from being deformed under hydraulic impact, and the closure plate 12 is further protected.

In one embodiment, as shown in fig. 1 to 4, the slide supply unit 20 includes a slide supply 22 for being fixedly connected to the water craft, and a gasket 23 provided between the slide supply 22 and the water craft for sealing a gap between the slide supply 22 and the water craft.

Specifically, when the cut-off device is installed, the sliding supply piece 22 can be enclosed in the perforation of the cut-off device, the sealing gasket 23 is arranged between the sliding supply piece 22 and the navigation device, the gap between the sliding supply piece 22 and the water navigation device is sealed, the sliding supply piece 22 can slide by the connecting unit 30, and the sealing gasket 23 can effectively prevent the water body entering the sliding supply perforation 21 from entering the navigation device from the gap between the sliding supply piece 22 and the water navigation device through the sealing of the gap between the sliding supply piece 22 and the water navigation device.

In this embodiment, as shown in fig. 1 to 4, the sliding member 22 has a cylinder structure, a sealing protrusion is provided on the bottom circumference of the sliding member 22, the sealing protrusion is fixed to the navigation device by a bolt, and the annular groove is opened in the sealing protrusion.

It is understood that the connection unit 30 may be any structure capable of connecting the driving unit 40 and the intercepting member 10, such as a rod body, a frame body, etc.

In one embodiment, as shown in fig. 1 to 4, the connection unit 30 includes a connection rod 31 and a hinge 32, the hinge 32 is hinged to the driving end of the driving unit 40, one end of the connection rod 31 is fixed to the hinge 32, and the other end of the connection rod 31 passes through the sliding-supply penetration 21 of the sliding-supply member 22 and the penetration of the navigation device, and is fixedly connected with the intercepting member 10. Since the connection unit 30 may be hinged to the driving unit 40 through the hinge 32, and thus after the installation of the driving unit 40 is completed, the installation error of the driving unit 40 may be compensated by rotating around the driving unit 40, so that the connection rod 31 may be installed in a vertical direction, thereby realizing the driving of the intercepting plate 12 in a vertical direction.

It is understood that the driving unit 40 may be any driving device, such as a hydraulic cylinder, an air cylinder, etc., that can axially drive the connection unit 30.

In one of the embodiments, as shown in fig. 1 and 4, the driving unit 40 includes a hydraulic electric cylinder 41, the hydraulic electric cylinder 41 is fixed to the inside of the navigation apparatus, and the joint 32 is hinged to a driving rod of the hydraulic electric cylinder 41. Because the hydraulic electric cylinder 41 has the characteristics of small volume and light weight, the weight of the navigation device can be effectively reduced, the high-speed performance of the navigation device is improved, and the internal space of the navigation device is more compact.

It is understood that the sealing unit 50 may be a hard sealing sleeve slidably connected to the sliding unit 20 and the connecting unit 30, and the hard sealing sleeve is sleeved or internally arranged on the sliding unit 20 and the connecting unit 30 to realize sealing connection with the sliding unit 20 and the connecting unit 30. Or a hose with both ends respectively fixed to the slide supply unit 20 and the connection unit 30, to realize a sealed connection with the slide supply unit 20 and the connection unit 30.

In one embodiment, as shown in fig. 1 to 4, the sealing unit 50 includes a soft connecting sleeve 51, one end of the soft connecting sleeve 51 is fixed to the sliding unit 20 and is connected with the sliding unit 20 in a sealing manner, and the other end of the soft connecting sleeve 51 is fixed to the connecting unit 30 and is connected with the connecting unit 30 in a sealing manner. Specifically, the sealing unit 50 is provided with the soft connecting sleeve 51, and two ends of the soft connecting sleeve 51 are respectively fixed on the sliding supply unit 20 and the connecting unit 30, so that the soft connecting sleeve 51 can be driven to stretch and contract when the connecting unit 30 moves, further lifting movement of the connecting unit 30 is not affected, sealing between the sliding supply unit 20 and the connecting unit 30 is realized, and seawater cannot enter the navigation equipment from a gap between the sliding supply unit 20 and the connecting unit 30.

In this embodiment, as shown in fig. 1 to 4, two ends of the soft connecting sleeve 51 are respectively sleeved on the slide feeding piece 22 and the hinge head 32, and are fixedly connected with the slide feeding piece 22 and the hinge head 32.

In this embodiment, further, the soft connecting sleeve 51 is a rubber sleeve, and the rubber sleeve has strong corrosion resistance and can better bear the corrosion of seawater.

In one embodiment, as shown in fig. 1 to 4, the soft connecting sleeve 51 is sleeved on the surface of the connecting unit 30, and the sealing unit 50 further includes a first clip 52, where the first clip 52 is sleeved on one end of the soft connecting sleeve 51 near the connecting unit 30, and is used for limiting the soft connecting sleeve 51. Specifically, the soft connecting sleeve 51 is sleeved at one end of the connecting unit 30, and can be fixedly connected with the connecting unit 30 through the limiting function of the first clamp 52, and the soft connecting sleeve 51 can be conveniently detached from the connecting unit 30.

In one embodiment, as shown in fig. 3, the sealing unit 50 further includes a mounting ring 53 and a sealing ring 54, the mounting ring 53 is located between the soft connecting sleeve 51 and the soft connecting sleeve 51, and the sealing ring 54 is mounted on the mounting ring 53 and is in sealing fit with the sliding unit 20. Specifically, the sealing ring 54 can effectively seal the soft connecting sleeve 51 and the sliding unit 20, and the mounting ring 53 can provide convenience for mounting the sealing ring 54.

In one embodiment, as shown in fig. 3, the mounting ring 53 is provided with an annular mounting groove 531, and the seal ring 54 is fixed to the annular mounting groove 531. Specifically, the annular mounting groove 531 may facilitate the mounting of the seal ring 54, and simultaneously provide a limit for the seal ring 54, so as to achieve stable sealing of the gap between the soft connecting sleeve 51 and the sliding unit 20.

In this embodiment, further, as shown in fig. 3, the number of the seal ring 54 and the annular mounting groove 531 is two.

In one embodiment, as shown in fig. 3, a plurality of sealing edges 541 are disposed at intervals on one side of the sealing ring 54 near the sliding unit 20, and the sealing edges 541 are in sealing fit with the surface of the sliding unit 20. Specifically, the sealing edge 541 can deform under the extrusion action of the surface of the sliding unit 20, and closely contact with the surface of the sliding unit 20, so as to improve the sealing performance of the sealing ring 54.

In one embodiment, as shown in fig. 1 to 4, the sealing unit 50 further includes a second clip 55, where the second clip 55 is sleeved on an end of the soft connecting sleeve 51 near the sliding unit 20, and is used for limiting the soft connecting sleeve 51. Specifically, the second clamp 55 is sleeved on one end of the soft connecting sleeve 51 close to the sliding unit 20, so that the soft connecting sleeve 51 and the sliding unit 20 can be fixed, and the soft connecting sleeve 51 is convenient to disassemble and assemble.

An embodiment of the present utility model also provides an amphibious vehicle, as shown in fig. 4, comprising a vehicle body 60 (only a stern portion is shown in the figure), and a cut-off device 70, the vehicle body 60 being provided with a penetration hole for the sliding unit 20 to be sealingly fitted to the vehicle body 60 and located on the peripheral side of the penetration hole, and the driving unit 40 being fixed to the inside of the vehicle body 60 and penetrating the penetration hole.

Specifically, the amphibious vehicle is provided with the cut-off device 70 on the vehicle body 60, the cut-off device 10 can be driven by the driving unit 40, so that the amphibious vehicle is suitable for sailing on water, and the sea water penetrating through the perforation of the vehicle body 60 and the sliding perforation 21 of the sliding unit 20 can not enter the inside of the vehicle body 60 through the sealing fit between the sliding unit 20 and the vehicle body 60 and the sealing function of the sealing unit 50, so that the cut-off device 70 of the amphibious vehicle can be effectively prevented from being damaged due to the corrosion of the sea water, and the service life of the cut-off device 70 can be effectively prolonged.

In this embodiment, as shown in fig. 4, the bottom of the vehicle body 60 is provided with a receiving chamber 61 having an opening on the lower side, the penetration hole of the vehicle body 60 communicates with the receiving chamber 61, the receiving chamber 61 can receive the intercepting member 10 retracted in the vehicle body 60, and the intercepting member 10 achieves interception by extending out of the receiving chamber 61.

The above-described embodiments of the present utility model do not limit the scope of the present utility model. Any other corresponding changes and modifications made in accordance with the technical idea of the present utility model shall be included in the scope of the claims of the present utility model.

Claims (10)

1. A stop device, comprising:

A closure member for closure;

The sliding supply unit is used for being sealed and attached to the water navigation equipment and is provided with a sliding supply perforation penetrating through the sliding supply unit;

one end of the connecting unit is connected with the intercepting piece, and the other end of the connecting unit is inserted into the sliding hole;

The driving unit is connected with the connecting unit and is used for enabling the connecting unit to drive the intercepting piece to extend or retract the water navigation equipment by driving the connecting unit;

The sealing unit is enclosed in the connecting unit, one end of the sealing unit is in sealing fit with the connecting unit, and the other end of the sealing unit is in sealing fit with the sliding supply unit.

2. The shutoff device of claim 1, wherein the sealing unit includes a soft connecting sleeve, one end of the soft connecting sleeve is fixed to the sliding supply unit and is connected with the sliding supply unit in a sealing manner, and the other end of the soft connecting sleeve is fixed to the connecting unit and is connected with the connecting unit in a sealing manner.

3. The shutoff device of claim 2, wherein the soft connecting sleeve is sleeved on the surface of the connecting unit, and the sealing unit further comprises a first clamp, wherein the first clamp is sleeved on one end of the soft connecting sleeve, which is close to the connecting unit, and is used for limiting the soft connecting sleeve.

4. The stop of claim 2, wherein the sealing unit further comprises a mounting ring and a sealing ring, the mounting ring is positioned between the soft connecting sleeve and the soft connecting sleeve, and the sealing ring is mounted on the mounting ring and is in sealing fit with the sliding supply unit.

5. A stop as claimed in claim 4, wherein the mounting ring is provided with an annular mounting groove, the sealing ring being secured to the annular mounting groove.

6. The shutoff device of claim 4, wherein a plurality of sealing edges are arranged at intervals on one side of the sealing ring, which is close to the sliding unit, and the sealing edges are in sealing fit with the surface of the sliding unit.

7. The shutoff device of claim 2, wherein the sealing unit further comprises a second clip, and the second clip is sleeved on one end of the soft connecting sleeve, which is close to the sliding unit, for limiting the soft connecting sleeve.

8. A stop as claimed in any one of claims 1 to 7 wherein the slide supply unit includes a slide supply for secure connection to the water craft and a gasket disposed between the slide supply and the water craft for sealing a gap between the slide supply and the water craft.

9. A stop device according to any one of claims 1 to 7, wherein the stop member comprises a protective frame fixedly connected to the stern of the water craft, a stop plate and a limit clip, the protective frame is provided with a holding chamber with an opening at the lower side, the limit clip is positioned in the holding chamber and fixed to the top of the protective frame, the stop plate is positioned in the holding chamber and fixed to the lower end of the connecting unit, and the stop plate can enter the inner side of the limit clip or extend out of the holding chamber through the opening at the lower side of the holding chamber by the driving of the driving unit.

10. An amphibious vehicle comprising a vehicle body provided with a penetration, and a stop device as claimed in any one of claims 1 to 9 wherein the slide supply unit is sealingly attached to the vehicle body and located on the peripheral side of the penetration, and the drive unit is fixed to the interior of the vehicle body and passes through the penetration.