CN110936776A

CN110936776A - Self-locking wheel retracting device of amphibious vehicle

Info

Publication number: CN110936776A
Application number: CN201911350793.9A
Authority: CN
Inventors: 蒋国春; 王庆辉; 刘晓明; 辛运炎; 孙荣哲; 薛梅; 李侠; 马国成; 高向利; 王钟山
Original assignee: PANWOO AVIATION TECHNOLOGY Co Ltd
Current assignee: PANWOO AVIATION TECHNOLOGY Co Ltd
Priority date: 2019-12-24
Filing date: 2019-12-24
Publication date: 2020-03-31

Abstract

The application discloses an amphibious vehicle self-locking wheel retracting device, and relates to an amphibious vehicle. The device is installed at the vehicle body of the amphibious vehicle and comprises: the device comprises a motor, a worm gear reduction box, a rocker arm, two synchronous connecting rods and two four-bar mechanisms. The electric vehicle is driven by the motor after being decelerated by the worm gear reduction box, and the rocker arm drives the synchronous connecting rods at two ends to pull or put down the four-bar mechanism at two sides, so as to drive wheels to be folded or put down. Through the structure, the amphibious vehicle has the advantages of being compact in structure and large in wheel folding amplitude, the wheels are folded above the water surface, the damage to the vehicle body streamline body is less, and the performance of the amphibious vehicle is obviously improved.

Description

Self-locking wheel retracting device of amphibious vehicle

Technical Field

The application relates to an amphibious vehicle, in particular to a self-locking wheel retracting device of the amphibious vehicle.

Background

The water navigation speed is an important index of the amphibious vehicle. Compared with a boat, the amphibious vehicle is complex in structure and heavy in draft; the streamlined body is damaged by the wheels and wheel suspensions; resulting in large sailing resistance. Therefore, most amphibious vehicles adopt a retractable wheel structure, and wheels are retracted above the water surface when the amphibious vehicles run in water, so that resistance is reduced. The purpose of increasing the speed of the vehicle is achieved. The quality of the design of the wheel retracting device directly influences the land running performance and the underwater navigation resistance.

The current mature amphibious vehicle products comprise Humingda, Gibbs Humdinga and Gibbs Quadski of Gibbs corporation, Splash of Rinspeed corporation in Switzerland and amphibious vehicles of Watercar corporation in America, and the highest navigation speed of the amphibious vehicles can reach 70-80 km/h. The development and the start of the amphibious vehicle are late in China, the difference is larger compared with the difference abroad, the wheel collecting mechanism is immature, and the overwater sailing speed is generally not more than 20 km/h. One important reason for the low speed of water navigation is that the resistance in water is too high, and if the wheels can be retracted above the water surface and the damage to the streamline body of the vehicle body is less, the performance of the amphibious vehicle can be obviously improved.

Disclosure of Invention

It is an object of the present application to overcome the above problems or to at least partially solve or mitigate the above problems.

The application provides an amphibious car is from locking-type receive and release wheel device installs in amphibious car's automobile body department, includes:

the motor is arranged at the central position of the vehicle body and used for providing power;

the worm and gear reduction box is connected with the motor and is used for transmitting the power of the motor, improving the torque, reducing the rotating speed and changing the moving direction of the motor;

the middle of the rocker arm is connected with a worm wheel shaft of the worm gear reduction box, and the rocker arm can rotate along the center of the worm wheel shaft;

the two synchronous connecting rods are symmetrically arranged relative to the central axis of the rocker arm, one end of each synchronous connecting rod is hinged with the end part of the rocker arm, and the two synchronous connecting rods can synchronously move along with the rocker arm; and

and the two four-bar mechanisms are symmetrically arranged relative to the central axis of the rocker arm, each four-bar mechanism is hinged at the other end of the corresponding synchronous connecting rod, and each four-bar mechanism is also fixedly connected with the corresponding wheel so as to drive the corresponding wheel to be folded or put down.

Optionally, each four-bar linkage comprises:

one end of the inner rocker arm is hinged with the other end of the corresponding synchronous connecting rod;

one end of the upper connecting rod is hinged with one end of the inner rocker arm to form an upper hinge point B of the four-bar linkage;

one end of the wheel side rocker is hinged with the other end of the upper connecting rod to form an upper hinge point C of the four-bar linkage;

one end of the lower connecting rod is hinged with the other end of the wheel-side rocker arm to form a lower hinge point D of the four-bar linkage mechanism, and the other end of the lower connecting rod is hinged with the other end of the inner side rocker arm to form a lower hinge point A of the four-bar linkage mechanism;

the lower hinge point A of each four-bar linkage mechanism is hinged with the vehicle body, the lower hinge point D of each four-bar linkage mechanism is fixedly connected with the wheel edge of the corresponding wheel, the upper hinge point B of each four-bar linkage mechanism is connected with the rocker arm through the corresponding synchronous connecting rod, and the motor drives the rocker arm after being decelerated by the worm gear reduction box.

Optionally, each four-bar linkage further comprises a shock absorber configured to reduce the propagation of vibrations to the vehicle body as the device traverses a bumpy road surface.

Optionally, the shock absorber is installed between the upper hinge point B and the lower link in the corresponding four-bar linkage.

Optionally, the inboard rocker arm is disposed proximate the motor and the wheel-side rocker arm is disposed proximate the wheel.

Alternatively, the motor has two working states of forward rotation and reverse rotation,

when the motor rotates in the forward direction, a worm wheel shaft of the worm and gear reduction box drives the rocker arm to rotate anticlockwise, the two synchronous connecting rods are pulled inwards, an upper hinge point B in each four-bar mechanism moves inwards with a point A below a hinge point as a circle center, an upper hinge point C and a lower hinge point D in each four-bar mechanism are pulled to be folded upwards, and then the corresponding wheels are folded;

when the motor rotates reversely, an upper hinge point C and a lower hinge point D in each four-bar mechanism are put down, so that the corresponding wheels return to the normal running position, and the angle between the rocker arm and the two synchronous connecting rods is small, so that the torque generated by the road surface supporting force on the worm gear reduction box is small, and self-locking is formed.

The self-locking wheel retracting device for the amphibious vehicle is driven by a motor after being decelerated by a worm gear reduction box, and the four-bar mechanism on two sides is pulled or put down in the synchronous connecting rods at two ends through the rocker arm, so that wheels are driven to retract or put down. Through the structure, the amphibious vehicle has the advantages of being compact in structure and large in wheel folding amplitude, the wheels are folded above the water surface, the damage to the vehicle body streamline body is less, and the performance of the amphibious vehicle is obviously improved.

In addition, this application is when the wheel is put down, and the angle between rocking arm and two synchronous connecting rods is very little for the moment of torsion that road surface holding power produced on the worm gear reducing gear box is very little, forms the auto-lock, and not only the locking is reliable, and the wheel load can not transmit on the motor in addition, effectively reduces the motor size.

In addition, this application is received a round function and shock-absorbing function separation for device long service life.

In addition, this application simple structure, easy processing, it is with low costs.

The above and other objects, advantages and features of the present application will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.

Drawings

Some specific embodiments of the present application will be described in detail hereinafter by way of illustration and not limitation with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:

fig. 1 is a schematic front view of an amphibious vehicle provided with a self-locking retractable wheel device of the amphibious vehicle according to an embodiment of the present application, during normal road running;

FIG. 2 is a top view of FIG. 1;

FIG. 3 is a schematic front view of the amphibious vehicle of FIG. 1, when navigating on water;

FIG. 4 is a top view of FIG. 3;

fig. 5 is a schematic front view of the amphibious vehicle of fig. 1 when driving over a bumpy surface.

The symbols in the drawings represent the following meanings:

1-vehicle wheels; 2-a chain transmission case; 3-a lower connecting rod; 4-a shock absorber; 5-wheel side rocker arm; 6-upper connecting rod; 7-a transmission shaft; 8-inner rocker arm; 9-worm gear reduction box; 10-a synchronization link; 11-a motor; 12-a rocker arm; 13-vehicle body.

Detailed Description

Fig. 1 is a schematic front view of an amphibious vehicle provided with a self-locking retractable wheel device of the amphibious vehicle according to an embodiment of the present invention, when the amphibious vehicle runs on a normal road. Fig. 2 is a top view of fig. 1. Fig. 3 is a schematic front view of the amphibious vehicle of fig. 1 when navigating on water. Fig. 4 is a top view of fig. 3. Fig. 5 is a schematic front view of the amphibious vehicle of fig. 1 when driving over a bumpy surface.

As shown in fig. 1 and also referring to fig. 2 to 5, the present embodiment provides a self-locking retractable wheel device for an amphibious vehicle, which is installed at a vehicle body 13 of the amphibious vehicle, and may generally include: the device comprises a motor 11, a worm gear reduction box 9, a rocker arm 12, two synchronous connecting rods 10 and two four-bar mechanisms. The motor 11 is installed at a central position of the vehicle body 13 for supplying power. The worm gear reduction box 9 is connected with the motor 11 and used for transmitting the power of the motor 11, improving the torque, reducing the rotating speed of the motor 11 and changing the moving direction of the motor 11. The middle of the rocker arm 12 is connected with a worm wheel shaft of the worm gear reduction box 9, and the rocker arm 12 can rotate along the center of the worm wheel shaft. The two synchronous connecting rods 10 are symmetrically arranged relative to the central axis of the rocker arm 12, one end of each synchronous connecting rod 10 is hinged with the end part of the rocker arm 12, and the two synchronous connecting rods 10 can move synchronously along with the rocker arm 12. The two four-bar linkages are symmetrically arranged relative to the central axis of the rocker arm 12, each four-bar linkage is hinged at the other end of the corresponding synchronous connecting rod 10, and each four-bar linkage is also fixedly connected with the corresponding wheel 1 so as to drive the corresponding wheel 1 to be folded or put down.

The self-locking wheel retracting device of the amphibious vehicle is driven by a motor 11 after being decelerated by a worm gear reduction box 9, and the rocker arm 12 drives the synchronous connecting rods 10 at two ends to pull or put down the four-bar mechanisms at two sides, so as to drive the wheels 1 to be retracted or put down. Through the structure, the amphibious vehicle has the advantages of being compact in structure and large in retraction amplitude of the wheels 1, the wheels 1 are retracted to the water surface, the streamline bodies of the vehicle body 13 are damaged less, and accordingly the performance of the amphibious vehicle is improved remarkably.

In addition, this application is because simple structure for easy processing, it is with low costs.

More specifically, as shown in fig. 1-2, and also in fig. 3-5, in this embodiment, each four-bar linkage includes: the inner rocker arm 8, the upper connecting rod 6, the wheel side rocker arm 5 and the lower connecting rod 3. Taking the left four-bar linkage as an example, one end of the inner rocker arm 8 is hinged to the other end of the corresponding synchronization link 10. One end of the upper connecting rod 6 is hinged with one end of the inner rocker arm 8 to form an upper hinge point B of the four-bar linkage. One end of the wheel-side rocker arm 5 is hinged with the other end of the upper connecting rod 6 to form an upper hinge point C of the four-bar mechanism. One end of the lower connecting rod 3 is hinged with the other end of the wheel-side rocker arm 5 to form a lower hinge point D of the four-bar mechanism. The other end of the lower connecting rod 3 is hinged with the other end of the inner side rocker arm 8 to form a lower hinge point A of the four-bar mechanism. Wherein, the lower hinge point A of each four-bar linkage is hinged with the vehicle body 13. The lower hinge point D of each four-bar linkage is fixedly connected with the wheel edge of the corresponding wheel 1. The upper hinge point B of each four-bar linkage mechanism is connected with the rocker arm 12 through the corresponding synchronous connecting rod 10, and is driven by the motor 11 after being decelerated by the worm gear reduction box 9.

More specifically, as shown in fig. 1-2, and also in fig. 3-5, in this embodiment, the inboard swing arm 8 is disposed adjacent to the motor 11, and the wheel-side swing arm 5 is disposed adjacent to the wheel 1. More specifically, as shown in fig. 1-2, and also in fig. 3-5, the wheel 1 is in drive connection with the chain drive case 2, and the chain drive case 2 is in drive connection with the drive shaft 7. The motor 11 has two operating states of forward rotation and reverse rotation.

The working process of the application is as follows:

as shown in fig. 3-4, when the motor 11 rotates in the forward direction, the worm wheel shaft of the worm gear reduction box 9 drives the rocker arm 12 to rotate counterclockwise, the two synchronization links 10 are pulled inward, the upper hinge point B and the lower hinge point a in each four-bar linkage mechanism move inward with the center of circle as the center of the circle, the upper hinge point C and the lower hinge point D in each four-bar linkage mechanism are pulled to retract upward, and then the corresponding wheel 1 is retracted.

As shown in fig. 1-2, when the motor 11 rotates in the reverse direction, the upper hinge point C and the lower hinge point D of each four-bar linkage are lowered, so that the corresponding wheel 1 returns to the normal driving position. More specifically, as shown in fig. 1-2, when the amphibious vehicle runs on the land, two ends of the rocker arm 12 of the worm gear reduction box 9 are in a state shown in fig. 2, the lower hinge point a and the upper hinge point B of each four-link are not moved relative to the vehicle body 13, and the angle between the rocker arm 12 and the two synchronous links 10 is small, so that the torque generated by the road supporting force on the worm gear reduction box 9 is small, self-locking is formed, not only is locking reliable, but also the load of the wheel 1 is not transmitted to the motor 11, and the size of the motor 11 can be effectively reduced.

Further, as shown in fig. 1-2, and also in fig. 3-5, in this embodiment, each four-bar linkage further includes a shock absorber 4 configured to reduce the propagation of vibrations to the vehicle body 13 as the device described herein traverses bumpy road surfaces. More specifically, as shown in fig. 1 to 5, the shock absorber 4 is installed between the upper hinge point B and the lower link 3 in the corresponding four-bar linkage. As shown in fig. 5, when the road is bumpy, the wheel 1 is forced to be tilted upwards, the shock absorber 4 is forced to be compressed, the upper hinge point C and the lower hinge point D in each four-bar linkage move upwards, and the lower hinge point a and the upper hinge point B do not move or slightly move, so that the propagation of vibration to the vehicle body 13 is reduced, and the shock absorption effect is achieved. Because receive in this application wheel function and shock-absorbing function separation for this application long service life.

It is to be noted that, unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which this application belongs.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present application.

Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the present application, "a plurality" means two or more unless specifically defined otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

The above description is only for the preferred embodiment of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. A self-locking wheel retracting device of an amphibious vehicle is arranged at a vehicle body (13) of the amphibious vehicle, and is characterized by comprising:

a motor (11) installed at a central position of the vehicle body (13) for providing power;

the worm and gear reduction box (9) is connected with the motor (11) and is used for transmitting the power of the motor (11), improving the torque, reducing the rotating speed and changing the moving direction of the motor;

the middle of the rocker arm (12) is connected with a worm wheel shaft of the worm gear reduction box (9), and the rocker arm (12) can rotate along the center of the worm;

the two synchronous connecting rods (10) are symmetrically arranged relative to the central axis of the rocker arm (12), one end of each synchronous connecting rod (10) is hinged with the end part of the rocker arm (12), and the two synchronous connecting rods (10) can synchronously move along with the rocker arm (12); and

and the two four-bar linkage mechanisms are symmetrically arranged relative to the central axis of the rocker arm (12), each four-bar linkage mechanism is hinged at the other end of the corresponding synchronous connecting rod (10), and each four-bar linkage mechanism is also fixedly connected with the corresponding wheel (1) so as to drive the corresponding wheel (1) to be folded or put down.

2. The self-locking wheel retraction device for an amphibious vehicle according to claim 1, characterised in that each four-bar linkage comprises:

one end of the inner rocker arm (8) is hinged with the other end of the corresponding synchronous connecting rod (10);

one end of the upper connecting rod (6) is hinged with one end of the inner rocker arm (8) to form an upper hinge point B of the four-bar mechanism;

one end of the wheel side rocker (5) is hinged with the other end of the upper connecting rod (6) to form an upper hinge point C of the four-bar linkage;

one end of the lower connecting rod (3) is hinged with the other end of the wheel side rocker arm (5) to form a lower hinge point D of the four-bar mechanism, and the other end of the lower connecting rod (3) is hinged with the other end of the inner side rocker arm (8) to form a lower hinge point A of the four-bar mechanism;

the lower hinge point A of each four-bar linkage mechanism is hinged with the vehicle body (13), the lower hinge point D of each four-bar linkage mechanism is fixedly connected with the wheel edge of the corresponding wheel (1), the upper hinge point B of each four-bar linkage mechanism is connected with the rocker arm (12) through the corresponding synchronous connecting rod (10), and the motor (11) drives the vehicle after being decelerated through the worm and gear reduction box (9).

3. The self-locking wheel retraction device for an amphibious vehicle according to claim 2, characterised in that each four-bar linkage further comprises a shock absorber (4) configured to reduce the propagation of vibrations to the vehicle body (13) when the device is traversing a bumpy road surface.

4. The self-locking wheel retraction device of an amphibious vehicle according to claim 3, characterised in that the shock absorber (4) is mounted between the upper hinge point B and the lower link (3) in the corresponding four-bar linkage.

5. The self-locking retractable wheel device for amphibious vehicles according to any of claims 2-4, characterised in that said inboard rocker arm (8) is arranged close to said electric motor (11) and said wheel-side rocker arm (5) is arranged close to the wheel (1).

6. The self-locking wheel releasing and releasing device of an amphibious vehicle as claimed in claim 5, wherein the motor (11) has two working states of forward rotation and reverse rotation,

when the motor (11) rotates forwards, the worm of the worm gear reduction box (9) drives the rocker arm (12) to rotate anticlockwise, the two synchronous connecting rods (10) are pulled inwards, the point A below the upper hinge point B in each four-bar mechanism is used as the circle center to move inwards, the upper hinge point C and the lower hinge point D in each four-bar mechanism are pulled to be folded upwards, and then the corresponding wheel (1) is folded;

when the motor (11) rotates reversely, an upper hinge point C and a lower hinge point D in each four-bar linkage mechanism are put down, so that the corresponding wheel (1) returns to a normal running position, and the angle between the rocker arm (12) and the two synchronous connecting rods (10) is small, so that the torque generated by the road surface supporting force on the worm gear reduction box (9) is small, and self-locking is formed.