阅读说明：本技术 两栖轮式车辆水上减阻机构 (Amphibious wheel type vehicle water drag reduction mechanism ) 是由 汤治伟 冯付勇 康忠 杨志勇 徐中一 王福鹏 于 2020-06-18 设计创作，主要内容包括：本发明属于水陆两栖轮式车辆技术领域,具体涉及一种两栖轮式车辆水上减阻机构。该机构包括电机、密封空腔、齿轮、齿条、滑板、导向机构、密封垫。密封空腔置于车体内轮舱前端,开口一端通向车体轮舱,电机正反转可使滑板伸出密封空腔外和收回。滑板伸出密封空腔后,可以补全水动力流线车体外形。本发明解决了两栖轮式车辆水上航行时,特别是高速航行时,由于轮舱存在而造成的车体外形水动力流线不完整的问题。两栖轮式车辆水上航行时,车轮可以提升到车底平面之上,但轮舱部分车体空缺,水上航行时将产生较大的阻力,很难达到水上滑行状态。本发明可补全水上工况时车体轮舱底部空缺的流线外形,大幅降低两栖轮式车辆水上航行阻力,提高水上航速。(The invention belongs to the technical field of amphibious wheel vehicles, and particularly relates to a waterborne drag reduction mechanism of an amphibious wheel vehicle. The mechanism comprises a motor, a sealing cavity, a gear, a rack, a sliding plate, a guide mechanism and a sealing gasket. The sealed cavity is arranged at the front end of the wheel cabin in the vehicle body, one end of the opening is communicated with the wheel cabin of the vehicle body, and the sliding plate can extend out of the sealed cavity and retract by the forward and reverse rotation of the motor. After the slide plate extends out of the sealed cavity, the appearance of the hydrodynamic streamline vehicle body can be supplemented. The invention solves the problem that the hydrodynamic streamline of the vehicle body appearance is incomplete due to the existence of the wheel cabins when the amphibious wheel vehicle sails on water, particularly at high speed. When the amphibious wheeled vehicle sails on water, the wheels can be lifted to the plane of the bottom of the vehicle, but the wheel cabin is partially vacant, so that large resistance is generated during sailing on water, and the amphibious wheeled vehicle is difficult to achieve a water sliding state. The invention can complement the streamline appearance of the vacancy at the bottom of the wheel cabin of the amphibious wheel vehicle under the water working condition, greatly reduce the water navigation resistance of the amphibious wheel vehicle and improve the water navigation speed.)

1. An amphibious wheel vehicle drag reduction mechanism on water, characterized in that it is provided at a wheel well portion, and it comprises: the device comprises a motor (1), a gear (5), a sliding plate (6), a rack (7) and a sealed cavity (8);

the sealed cavity (8) is arranged in the vehicle body, the sliding plate (6) is arranged in the sealed cavity (8), the gear (5) driven by the motor (1) pushes the rack (7) arranged on the sliding plate (6) to enable the sliding plate (6) to extend out or retract into the sealed cavity (8), and the sliding plate (6) can be used as a part of the vehicle body shape after sliding out to play a role in reducing the water resistance of the vehicle;

the closed cavity (8) is communicated to the outer side of the vehicle body except for the opening end, so that the sliding plate (6) can extend out, and the rest is fully sealed and used for preventing water from entering the vehicle body.

2. The amphibious wheeled vehicle waterborne drag reduction mechanism of claim 1, further comprising: a motor mounting plate (2) and a limiting block (9);

rack (7) installation is fixed on slide (6), stopper (9) are installed on slide (6), slide (6) are installed within sealed cavity (8), and motor (1) is fixed on sealed cavity (8) through motor mounting panel (2), and motor (1) axle head stretches into in sealed cavity (8), gear (5) installation is fixed on motor (1) output shaft, and gear (5) and rack (7) meshing, motor (1) rotate through gear (5), rack (7) transmission, drive slide (6) and remove.

3. The amphibious wheeled vehicle waterborne drag reduction mechanism of claim 1, further comprising: the motor (1) can rotate forward and backward, so that the sliding plate (6) can do reciprocating motion of extending out of the sealed cavity (8) or retracting.

4. The amphibious wheeled vehicle water drag reduction mechanism according to claim 1, wherein the slide plate (6) is arranged to be parallel to the vehicle bottom plane, and the slide plate (6) can complement the hydrodynamic streamline shape of the vehicle bottom at the wheel well part after extending out of the sealed cavity (8).

5. An amphibious wheeled vehicle water drag reducing mechanism according to claim 1, characterised in that the mechanism is further provided with a guiding mechanism (4);

the guide mechanism (4) is used for ensuring that the sliding plate (6) extends to a specified position along a set path.

6. The amphibious wheel vehicle water drag reduction mechanism according to claim 1, wherein the limiting block (9) is mounted at the tail end of the rack (7), when the gear (5) pushes the rack (7) to operate and the sliding plate (6) reaches a specified position, the limiting block (9) at the tail end of the rack (7) blocks the gear (5) to rotate, the sliding plate (6) is prevented from continuing to extend out, and the sliding plate (6) is prevented from completely sliding out of the sealed cavity (8) and falling off.

7. An amphibious wheeled vehicle water drag reduction mechanism according to claim 1, characterised in that said mechanism is further provided with a locking mechanism (10); the locking mechanism (10) is of a bayonet structure, adopts a power-off locking mode and is used for keeping the position of the sliding plate (6) firm and stable after the sliding plate (6) is accommodated in the sealed cavity (8) and preventing the sliding plate from bumping, falling and dislocating along with the vehicle.

8. An amphibious wheeled vehicle water drag reduction mechanism according to claim 1, characterised in that the mechanism is further provided with a mudguard (11); the mud guard (11) adopts a hinge structure, has certain rigidity, and is used for blocking the opening of the sealed cavity (8) after the sliding plate (6) is retracted into the sealed cavity (8) when the vehicle is in a land working condition so as to prevent muddy water, sand and soil from entering the sealed cavity (8); when the vehicle is in a working condition of turning on water, the mudguard (11) is automatically opened when the sliding plate (6) slides out.

9. The amphibious wheel vehicle water drag reduction mechanism according to claim 1, wherein the power supply characteristics of the motor (1) and the locking mechanism (10) are suitable for a vehicle-mounted direct current power supply, DC 12-28V has a waterproof characteristic, and the sealing grade reaches IP 68.

10. The amphibious wheeled vehicle waterborne drag reduction mechanism of claim 1, wherein the outer contour of said sealed cavity (8) is adapted to the body flow line profile;

a sealing gasket (3) is arranged between the motor mounting plate (2) and the sealing cavity (8); the motor mounting plate (2) is fixed on the sealing cavity (8) through a fixing bolt;

the sealing cavity (8), the sliding plate (6), the gear (5), the rack (7), the motor mounting plate (2), the sealing gasket (3), the guide mechanism (4), the limiting block (9), the locking mechanism (10) and the fender (11) are made of materials which can resist long-time seawater soaking corrosion.

Technical Field

The invention belongs to the technical field of amphibious wheel vehicles, and particularly relates to a waterborne drag reduction mechanism of an amphibious wheel vehicle.

Background

Due to the restriction of factors such as the weight, the overall dimension and the power of the vehicle, the sailing speed of the vehicle after launching is difficult to increase. The research on the water drag reduction technology of the vehicle has great significance for improving the water navigational speed of the vehicle, particularly a fighting vehicle.

Disclosure of Invention

Technical problem to be solved

The technical problem to be solved by the invention is as follows: how to reduce the overwater navigation resistance of the amphibious wheeled vehicle.

(II) technical scheme

In order to solve the above technical problem, the present invention provides an amphibious wheel vehicle water drag reduction mechanism, which is arranged at a wheel cabin part, and comprises: the device comprises a motor 1, a gear 5, a sliding plate 6, a rack 7 and a sealed cavity 8;

the sealed cavity 8 is arranged in the vehicle body, the sliding plate 6 is arranged in the sealed cavity 8, the gear 5 driven by the motor 1 pushes the rack 7 arranged on the sliding plate 6, so that the sliding plate 6 extends out of or is accommodated in the sealed cavity 8, and the sliding plate 6 slides out to be a part of the vehicle body shape to play a role in reducing the water resistance of the vehicle;

the closed cavity 8 is communicated to the outer side of the vehicle body except for an opening end, so that the sliding plate 6 can extend out, and the rest is fully sealed for preventing water from entering the vehicle body.

Wherein the mechanism further comprises: the motor mounting plate 2 and the limiting block 9;

the rack 7 is fixedly installed on the sliding plate 6, the limiting block 9 is installed on the sliding plate 6, the sliding plate 6 is installed in the sealed cavity 8, the motor 1 is fixed on the sealed cavity 8 through the motor installation plate 2, the shaft end of the motor 1 extends into the sealed cavity 8, the gear 5 is fixedly installed on the output shaft of the motor 1, the gear 5 is meshed with the rack 7, and the motor 1 rotates to drive the sliding plate 6 to move through the transmission of the gear 5 and the rack 7.

Wherein the mechanism further comprises: the motor 1 is arranged to rotate forward and backward, so that the sliding plate 6 reciprocates to extend out of or retract into the sealed cavity 8.

The sliding plate 6 is arranged to be parallel to the plane of the bottom of the vehicle, and the hydrodynamic streamline shape of the bottom of the vehicle body at the part of the wheel cabin can be completed after the sliding plate 6 extends out of the sealed cavity 8.

Wherein, the mechanism is also provided with a guide mechanism 4;

the guide mechanism 4 is used to ensure that the slide 6 extends to a designated position along a set path.

The limiting block 9 is installed at the tail end of the rack 7, when the gear 5 pushes the rack 7 to operate, and the sliding plate 6 reaches a designated position, the limiting block 9 at the tail end of the rack 7 clamps the gear 5 to rotate, so that the sliding plate 6 is prevented from continuing to extend out, and the sliding plate 6 is prevented from sliding out of the sealed cavity 8 completely and falling off.

Wherein, the mechanism is also provided with a locking mechanism 10; the locking mechanism 10 is a bayonet structure, adopts a power-off locking mode, and is used for keeping the position of the sliding plate 6 firm and stable after the sliding plate 6 is accommodated in the sealed cavity 8, and is not bumped, dropped and dislocated along with the vehicle.

Wherein, the mechanism is also provided with a mudguard 11; the mud guard 11 adopts a hinge structure, has certain rigidity, and is used for blocking the opening of the sealed cavity 8 after the slide plate 6 is accommodated in the sealed cavity 8 when the vehicle is in a working condition of land, so as to prevent muddy water, sand and soil from entering the sealed cavity 8; when the vehicle is in the working condition of turning on water, the mudguard 11 is automatically opened when the sliding plate 6 slides out.

The power supply characteristics of the motor 1 and the locking mechanism 10 are suitable for a vehicle-mounted direct-current power supply, DC 12-28V has a waterproof characteristic, and the sealing grade reaches IP 68.

Wherein the outer contour of the sealed cavity 8 is adapted to the streamline shape of the vehicle body;

a sealing gasket 3 is arranged between the motor mounting plate 2 and the sealing cavity 8; the motor mounting plate 2 is fixed on the sealed cavity 8 through a fixing bolt;

the materials adopted by the fixing bolts of the sealing cavity 8, the sliding plate 6, the gear 5, the rack 7, the motor mounting plate 2, the sealing gasket 3, the guide mechanism 4, the limiting block 9 and the fender 11 of the locking mechanism 10 can resist long-time seawater soaking corrosion.

(III) advantageous effects

When the amphibious wheeled vehicle sails on water, the wheels can be lifted to the bottom surface of the vehicle to reduce the resistance on water, but the wheel cabin is partially vacant, the whole paddling streamline of the vehicle is damaged, large resistance is generated during sailing on water, and the water skidding state is difficult to achieve. Therefore, when the amphibious wheel-type vehicle sails on water, the mechanism for complementing the whole streamline appearance at the bottom of the wheel cabin of the vehicle body is designed, the overwater sailing resistance of the amphibious wheel-type vehicle can be greatly reduced, and the overwater sailing speed of the vehicle is improved.

Compared with the prior art, the invention provides an overwater drag reduction mechanism for an amphibious wheel vehicle, which is provided with a built-in sliding plate mechanism, wherein after wheels are lifted, a sliding plate can be moved out to complement the streamline appearance of the bottom of a wheel cabin of the vehicle body. The retractable vehicle can be retracted when running on the land, and the running on the land is not influenced.

Taking 4-wheel vehicles as an example, test data shows that the same streamline shape of the vehicle body completes the bottoms of 2 rear wheel cabins, and the resistance peak value can be reduced by 15-20%.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic view of the structure of the skateboard of the present invention.

Fig. 3 is a schematic structural view of the guide mechanism of the present invention.

Fig. 4 is a schematic structural diagram of the locking mechanism of the present invention.

FIG. 5 is a schematic diagram of a closed cavity structure according to the present invention.

FIG. 6 is a schematic representation of the present invention under two operating conditions.

Detailed Description

In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

In order to solve the problems of the prior art, the present invention provides an amphibious wheel vehicle water drag reduction mechanism, which is arranged at a wheel well portion, as shown in fig. 1-6, and comprises: the device comprises a motor 1, a gear 5, a sliding plate 6, a rack 7 and a sealed cavity 8;

the sealed cavity 8 is arranged in the vehicle body or communicated with the vehicle body, the sliding plate 6 is arranged in the sealed cavity 8, the gear 5 driven by the motor 1 pushes the rack 7 arranged on the sliding plate 6, so that the sliding plate 6 extends out of or is accommodated in the sealed cavity 8, and the sliding plate 6 slides out to form a part of the vehicle body shape to play a role in reducing the water resistance of the vehicle;

the closed cavity 8 is communicated to the outer side of the vehicle body except for an opening end, so that the sliding plate 6 can extend out, and the rest is fully sealed for preventing water from entering the vehicle body.

Wherein the mechanism further comprises: the motor mounting plate 2 and the limiting block 9;

the rack 7 is fixedly installed on the sliding plate 6, the limiting block 9 is installed on the sliding plate 6, the sliding plate 6 is installed in the sealed cavity 8, the motor 1 is fixed on the sealed cavity 8 through the motor installation plate 2, the shaft end of the motor 1 extends into the sealed cavity 8, the gear 5 is fixedly installed on the output shaft of the motor 1, the gear 5 is meshed with the rack 7, and the motor 1 rotates to drive the sliding plate 6 to move through the transmission of the gear 5 and the rack 7.

Wherein the mechanism further comprises: the motor 1 is arranged to rotate forward and backward, so that the sliding plate 6 reciprocates to extend out of or retract into the sealed cavity 8.

The sliding plate 6 is arranged to be parallel to the plane of the bottom of the vehicle, and the hydrodynamic streamline shape of the bottom of the vehicle body at the part of the wheel cabin can be completed after the sliding plate 6 extends out of the sealed cavity 8.

Wherein, the mechanism is also provided with a guide mechanism 4;

the guide mechanism 4 is used to ensure that the slide 6 extends to a designated position along a set path.

The limiting block 9 is installed at the tail end of the rack 7, when the gear 5 pushes the rack 7 to operate, and the sliding plate 6 reaches a designated position, the limiting block 9 at the tail end of the rack 7 clamps the gear 5 to rotate, so that the sliding plate 6 is prevented from continuing to extend out, and the sliding plate 6 is prevented from sliding out of the sealed cavity 8 completely and falling off.

Wherein, the mechanism is also provided with a locking mechanism 10; the locking mechanism 10 is a bayonet structure, adopts a power-off locking mode, and is used for keeping the position of the sliding plate 6 firm and stable after the sliding plate 6 is accommodated in the sealed cavity 8, and is not bumped, dropped and dislocated along with the vehicle.

Wherein, the mechanism is also provided with a mudguard 11; the mud guard 11 adopts a hinge structure, has certain rigidity, and is used for blocking the opening of the sealed cavity 8 after the slide plate 6 is accommodated in the sealed cavity 8 when the vehicle is in a working condition of land, so as to prevent muddy water, sand and soil from entering the sealed cavity 8; when the vehicle is in the working condition of turning on water, the mudguard 11 is automatically opened when the sliding plate 6 slides out.

The power supply characteristics of the motor 1 and the locking mechanism 10 are suitable for a vehicle-mounted direct-current power supply, DC 12-28V has a waterproof characteristic, and the sealing grade reaches IP 68.

Wherein the outer contour of the sealed cavity 8 is adapted to the streamline shape of the vehicle body;

a sealing gasket 3 is arranged between the motor mounting plate 2 and the sealing cavity 8; the motor mounting plate 2 is fixed on the sealed cavity 8 through a fixing bolt;

the materials adopted by the fixing bolts of the sealing cavity 8, the sliding plate 6, the gear 5, the rack 7, the motor mounting plate 2, the sealing gasket 3, the guide mechanism 4, the limiting block 9 and the fender 11 of the locking mechanism 10 can resist long-time seawater soaking corrosion.