Transmission and amphibian vehicle

FIELD: transport engineering.

SUBSTANCE: proposed transmission 3 for amphibian vehicle contains engine 12, gearbox 14 and differential 16. Axis of crankshaft of engine 12 can coincide with longitudinal axis 32 of vehicle or it can be parallel to longitudinal axis. Gearbox 14 is installed crosswise relative to engine perpendicular to engine. Gearbox can be manual, with successive change of gear ratio, automated, manual automatic or stepless. Drive shaft 42 of transmission set into motion by engine crankshaft drives propulsion unit 48 of vehicle, and gearbox 14. Engine can be displaced from central line of vehicle.

EFFECT: provision of transmission for amphibian vehicle in which conventional cross automobile transmission is used adaptable for amphibian vehicle.

10 cl, 3 dwg

 

This invention relates to the transmission, which is suitable in particular for use in a vehicle amphibious made with the possibility of movement on land and in the water, and more specifically to a means of adapting conventional cross automotive powertrain having an engine, gearbox and differential to the drive wheels and the marine propulsion unit of the vehicle is amphibious.

In conventional front-wheel drive automobile construction, the motor and gearbox are located transversely to the axis of the vehicle in front of the vehicle. The transmission includes a built-in differential located at the rear side of the transmission that drives the front wheels of the vehicle using a pair of axes.

This transverse engine and gearbox driving the front wheels is almost universal in small passenger vehicles and therefore the production volumes are high, which makes this design the most accessible for use in vehicles, amphibians. When choosing a transmission for specialized vehicles that are manufactured in small lots, such as the vehicle is amphibious, accessibility is an important factor. Additional benefits and cross design in comparison with the conventional design of the longitudinal transmission, currently used in large vehicles, manufactured, which are high power density and compactness.

Earlier adaptation transverse powertrain used in front-wheel drive vehicle for use in a vehicle amphibian was considered impossible because of the difficulty of the layout of the drive with the means of selection of the power required to actuate the marine propulsion unit. Transverse limit the space at either end of the motor Assembly and the gearbox, making the location of the structures of the funds of the PTO on the distribution end of the crankshaft or between the engine and gearbox is very difficult. In addition, it was found that the power output transmission combined node transmission and differential impossible.

The present invention is to develop a transmission for vehicles-amphibious, which is adapted and used conventional cross automotive transmission in which the above disadvantages are reduced or essentially eliminated.

In accordance with the first aspect of the present invention, the proposed transmission for vehicles-amphibious containing the engine, the gearbox and the WPPT is erential, characterized in that it is adapted to ensure installation of the engine, essentially, so that the crankshaft is oriented with ensuring proper alignment of its axis with the longitudinal axis of the vehicle or parallelism her, and the transmission is located so that the input shaft of the gearbox, essentially perpendicular to the axis of the crankshaft, the transmission further comprises a drive shaft, the axis of which is oriented to ensure coincidence with the axis of the crankshaft, driven them in motion, and this drive shaft adapted to actuate the marine propulsion unit of the vehicle, and boxes transmission.

The drive shaft preferably provides actuation transmission through the pair entered engages bevel gears. In this construction one of the bevel gears may be mounted on the drive shaft, and the other bevel gear wheel can be mounted on the input drive shaft of the transmission.

The drive shaft is preferably connected to a crankshaft by means of an elastic coupling.

The drive shaft is preferably connected to the input drive shaft of the gearbox via a disconnecting device.

In a preferred to the specific embodiment, the drive shaft and bevel gears enclosed in the crankcase.

Transmission may contain manual manual sequential change of gear ratio or automated manual gearbox, and in this case it is possible to provide a friction clutch for connecting the input shaft of the transmission and the input shaft of the gearbox.

In accordance with a second aspect of the invention proposed vehicle amphibious containing the transmission in accordance with the first aspect of the invention.

Now just as an example, will describe the invention with reference to the accompanying drawings, in which

figure 1 - view of conventional construction transverse front-wheel drive powertrain,

figure 2 is a view in plan of the transmission in accordance with the invention,

figure 3 - the vehicle is amphibious.

Referring first to figure 1, note that the usual transverse front-wheel drive transmission is indicated as a whole by position 10. In front of the vehicle (not shown) are the engine 12 and box 14 of the transmission, and the axis 13 of the crankshaft of the engine and transmission is transverse to the longitudinal axis 32 of the vehicle. Box 14 transmission has a built-in differential gear 16, which is located in the rear of the box 14 of the transmission. This differential drives the front wheels 26, 28 of the vehicle using the axes 22, 24. The floor is camping 22, which actuates the left (according to drawing) of the front wheel 26, is connected to the differential through a universal joint 18 constant angular velocity. The axle 24, which results in the movement of the right (according to drawing) of the front wheel 28, is connected to the differential by means of additional universal joint 20 constant angular velocity and the countershaft 21.

Figure 2 diagram of the transmission for vehicles-amphibious in accordance with the invention, indicated as a whole by the position 30.

The engine 12 is located so that the crankshaft (not shown) of the engine 12 is longitudinally aligned with the axis 32 of the vehicle. The engine 12 is installed in the vehicle in front of the Central line of the rear wheels 34, 36, and normal output leading end 38 of the crankshaft is connected with a flexible coupling 40. In the same crankshaft orientation in the axial direction is the drive shaft 42, which is driven by a crankshaft through a flexible coupling 40. On the drive shaft 42 at its end remote from the flexible coupling 40, installed breakaway device 44, which is provided with capability to enable and disable the transmission of movement to the drive shaft 46 marine propulsion unit in the form of a jet pump 48.

Hot is the use of the disconnect device to disconnect the drive marine propulsion unit 48 is preferred, when the vehicle is used on land, this is not essential and disconnecting device 44 can be omitted if so desired. If disconnecting device 44 is missing, the drive shaft 46 is connected directly to the drive shaft 42, or the shaft 42 may be a continuation of the shaft 46.

Box 14 transmission mounted behind the engine 12 and the input drive shaft 54 of the gearbox runs perpendicular to the axis of the crankshaft of the engine. On the drive shaft 42 is installed first bevel gear wheel 50 between the flexible coupling 40 and disconnecting device 44, and the input drive shaft 54 is installed the second bevel gear 52, entered in engagement with the first bevel gear wheel 50. Therefore, the movement from the engine 12 is transmitted at an angle of 90° through bevel gears 50, 52 in box 14 of the transmission. The drive shaft 42, bevel gears 50, 52, breakaway device 44 and a flexible coupling 50 all together enclosed in a casing 53.

Box 14 transmission may contain manual manual sequential change of gear ratio or automated manual gearbox, and in this case it is possible to provide a friction clutch (not shown) to provide selective transmission of movement between the input shaft 54 of the transmission and the input shaft (not the azan) of the gearbox. Alternatively, the transmission may be automatic or semi-automatic gearbox, and in this case, the friction clutch can be replaced with a hydraulic clutch, made for example in the form of a suitable hydraulic torque Converter. In an additional alternative embodiment, transmission may be a continuously variable transmission.

The differential 16, made as a single unit with box 14 transmission, provides drive the rear wheels 34, 36 of the vehicle using the axes 56, 58. The axle 56 is driven directly from the left (according to drawing) side of the differential 16. The axle 58 is driven directly from the right (according to drawing) side of the differential 16 through the intermediate shaft 21. By the way, is known in the art, in axis you can embed universal joints of the constant angular velocity or other universal joints.

This state of the engine 12 and box 14 transmission ideal for vehicles-amphibious, since the mass of these design elements are shifted to the rear of the vehicle that is required for the optimal operation of the movement on the water. In addition, since the drive jet pump 48 is carried out directly from the crankshaft the Ala of the engine, and not from the funds of the PTO output gear that you can, for example, to transfer the maximum power of the engine 12 to the jet pump 48 with minimal friction losses. In this regard, it should be noted that in the vehicle amphibious capability of supplying full power of the engine to a marine propulsion unit is more important than the possibility of supplying full power of the engine to the wheels.

Figure 3 shows the vehicle amphibious 60 having a compartment 62 of the engine, where the transmission in accordance with figure 2.

Although the invention is described in connection with specific options for implementation, which are currently considered the most practical and preferred, it is understood that the invention is not limited to the described structures and should be considered as encompassing various modifications and equivalent constructions falling within the scope of the claims of the invention. For example, although it is preferable that the axis of the crankshaft coincides with the longitudinal axis of the vehicle, yet when needed you can set the transmission in such a way that the axis of the crankshaft is parallel to the longitudinal axis of the vehicle, but will be offset to one side from her. In addition, the jet pump 48 may be replaced by a suitable marine propulsion unit, for example the ship is rebny screw.

1. Transmission (3) for vehicles-amphibious containing the motor (12), a box (14) transmission and differential (16), characterized in that the engine is mounted so that the crankshaft is oriented with ensuring proper alignment of its axis with the longitudinal axis (32) of the vehicle or parallelism her, and the transmission is located so that the input shaft (54) transmission, essentially perpendicular to the axis of the crankshaft, the transmission further comprises a drive shaft (42), essentially coaxially with the crankshaft shaft and driven them in motion, and this drive shaft actuates marine propulsion unit (48) of the vehicle and the transmission.

2. Transmission according to claim 1, characterized in that the drive shaft (42) drives the transmission through the pair entered engages bevel gear wheels (50, 52).

3. Transmission according to claim 2, wherein one of the conical gear wheels (50) mounted on the drive shaft (42), and the other bevel gear wheel (52) mounted on the input drive shaft (54) transmission.

4. Transmission according to any one of claims 1 to 3, characterized in that the drive shaft is connected to a crankshaft by means of an elastic coupling (40).

5. Transmission according to any preceding paragraph, atricauda is the, what drive shaft (42) is connected to the drive shaft (46) marine propulsion unit by disconnecting device (44).

6. Transmission according to any one of claim 2 to 4, characterized in that the drive shaft and bevel gears enclosed in a casing (53).

7. Transmission according to any preceding paragraph, wherein the transmission includes manual, manual sequential change of gear ratio or automated manual gearbox and provided a friction clutch to provide selective transmission of movement between the input shaft of the transmission and the input shaft of the gearbox.

8. Transmission according to any one of claims 1 to 6, characterized in that the transmission includes an automatic gearbox and provides a hydraulic coupling for connecting the input shaft of the transmission and the input shaft of the gearbox.

9. Transmission according to any one of claims 1 to 6, characterized in that the transmission is a continuously variable transmission.

10. The vehicle is amphibious (60), characterized in that it comprises a transmission made according to any preceding paragraph.



 

Same patents:

FIELD: mechanical engineering.

SUBSTANCE: proposed power gear train includes engine, transmission located in line with it and intermediate power takeoff unit located between engine and transmission; output of power takeoff unit may transmit power to unit of drive working during motion on water; it is mounted in rear part of transport facility by means of shaft. Transmission output is designed for transmission of power to differential mounted in rear part of transport facility. Power takeoff unit is located behind transmission and shaft passes below or through engine oil sump.

EFFECT: enhanced arrangement of power gear train.

10 cl, 2 dwg

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FIELD: transport engineering; amphibian vehicle power train.

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19 cl, 8 dwg

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3 cl, 4 dwg

FIELD: transport engineering.

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3 cl, 7 dwg

FIELD: mechanical engineering.

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Buffer travel stop // 2269427

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12 cl, 12 dwg

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FIELD: transport engineering; amphibian vehicle power train.

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FIELD: transport engineering; amphibians.

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13 cl, 11 dwg

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9 cl, 11 dwg

Vehicle // 2245259

FIELD: transport engineering; amphibian vehicles.

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EFFECT: improved operating characteristics of amphibian vehicle.

3 cl, 6 dwg

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