Power gear train for amphibian-type transport facility

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

 

The present invention relates to power transmission for vehicle type amphibious vehicle, including the engine and installed in the transmission line, in which the PTO unit is located between the motor vehicle and installed in the transmission line, in layout view, known as the scheme with intermediate PTO. The present invention also relates to a vehicle of a type of amphibian that has such a powertrain.

In the vehicle type amphibious preferable to use power transmission in which the engine and transmission are located in the rear of the vehicle that is necessary to ensure good performance of the vehicle mode of transportation on water. In addition, this arrangement of power transmission allows maximum space in front of the vehicle passenger compartment.

Power transmission for use in a vehicle of the type amphibious vehicle, designed for the transport of military personnel described in U.S. patent 5752862 (author Mohler (Mohler)). In the described power transmission uses the engine installed in the rear of the vehicle, a combined transmission and differential, installed in front of the Tran is tailor tools. Although in the description of the author Mohler the drive shafts from the differential are used to drive the tracked propulsion, such drive shafts can also be used to drive the front wheels, designed for movement on land, civilian vehicles type of amphibian. However, when used in this civil vehicle, the arrangement of power transmission, described by the author Mohler, has several disadvantages. First, placing the transmission in front of the vehicle reduces the space used for passengers and/or Luggage. Secondly, this layout requires that the propeller shaft passed through the passenger compartment. This shaft, through which transfers all the power of the engine, and which rotates with the speed of the engine, is a useful space of the passenger compartment and is the source of the noise. Thirdly, the drive to the front wheels is not the optimal solution for vehicles with rear engine, because it does not provide sufficient grip with the surface, as in the case when the weight of the engine is placed above the wheels of the drive. This arrangement may create problems, for example, when climbing a slippery surface and leads to unusual characteristics of control while traveling down the road.

The other is omonovci power transmission, designed for use in the vehicle type amphibian known from the publication US 5590617 (author Oquestrada (Aquastrada)) and US 3765368 (author asbeck says (Asbeck)). In these power transmission, engine and transmission are connected directly with each other under the scheme, commonly used in vehicles with rear-wheel drive, but uses a reverse layout to drive to the front wheels. In particular, well you can see from the publication of the author Oquestrada, in this arrangement, the area of the passenger seat is displaced in the direction toward the front of the vehicle, followed by the area long rear deck, which cannot be used as space for passengers or Luggage.

The task of the invention is to create such a vehicle type amphibian and installed in it the power transmission, which avoids the problems associated with the layout and providing traction that were inherent in the solutions of prior art. When this is achieved technical result, which is to reduce the space along the length of the footprint of the power transfer.

In accordance with one object of the present invention proposed a power transmission for a vehicle type amphibious vehicle, including the engine, whic is its in line with it the transmission and intermediate PTO, located between the engine and the transmission, and the output of the PTO unit is configured to transfer power to the drive unit designed for transportation on water, installed in the rear of the vehicle type amphibious, with a shaft, which passes below the oil pan of the engine, or through it, or along the engine with the transmission configured to transfer power to the differential, located in the rear part of the vehicle type of amphibian.

The differential is preferably located behind the engine.

In a preferred embodiment of the present invention the output of the PTO unit is made in the form of the output shaft, which is connected with the drive shaft passing below the oil pan of the engine, or through it, or along the engine. The oil pan of the engine may include a tunnel or recess, through which the drive shaft.

In another preferred embodiment, the design of power transmission in accordance with the present invention, the PTO unit is designed so that it transmits power to the drive unit designed for transportation on water, situated essentially in line with the engine and transmission.

Preferably, the output power of transmi the FIC is transmitted to the rear differential via the transfer case. In addition to the rear differential, through the transfer case can also be transmitted to the power differential that is located in front of the vehicle, to drive the front wheels of the vehicle. This arrangement allows the four-wheel drive when the vehicle is operating in the mode of transportation by land.

The system can be installed disconnector drive the movement of water so that allows selective disabling of the drive unit designed for transportation on water.

In accordance with the second subject of the present invention proposed vehicle type amphibian, in which power transmission, in accordance with the first object of the present invention.

The present invention will be described below as an example with reference to the accompanying drawings, on which:

the figure 1 shows a side view of the first variant implementation of power transmission in accordance with the present invention, in which the actuator is performed only on the rear wheels; and

the figure 2 depicts the side view of the second variant implementation of power transmission in accordance with the present invention, in which the drive is to the front and rear wheels.

Let us first consider figure 1, which shows the sludge transfer 1, includes an engine 2, a transmission 3, block 4 drive, designed for movement on the water so that the corresponding Central line of each of these units is essentially along the center line of the vehicle type of amphibian. The transmission may include manual transmission, transmission with sequential shifting, semi-automatic or automatic transmission, or a continuously variable-adjustable gear (PDUs (CVT)).

Node 5 PTO, located between the engine 2 and the transmission 3 includes an output shaft 6 is driven in rotation from the engine 2, and is installed inside the casing 7 for the circuit. The PTO unit may be of any suitable type and may be, for example, carried out in accordance together with pending application for patent of great Britain No. GB0020884.3 this author.

The output shaft 6 of the PTO unit is connected to the shaft 8 of the drive, which passes back to block 4 of the actuator, intended for transportation on water. As shown in figure 1, the drive unit designed for transportation on water, is a water cannon, but can also be used propeller type propeller or any other relevant drive system to move through the water. The switch 9 is installed in the transmission line capacity from wslotmar power to the drive unit, intended for transportation on water, so that is able to selectively activate and deactivate the drive unit designed for transportation on water. However, such a switch of the drive unit designed for transportation on water, is not an essential element and may not be used.

In the embodiment shown in figure 1, the shaft 8 of the transmission power for the drive unit designed for transportation on water, passes through a tunnel 11 in the oil pan 12 of the engine 2. Alternatively, the drive shaft may pass below the oil pan or next to the oil pan with any convenient part of the engine with the appropriate location of the drive unit designed for transportation on water. The tunnel 11 may be completely closed, as shown in the drawing, or may be made in the form of indentations in the pan, open side of the base.

The transmission 3 is a conventional longitudinal transmission type. On the side 18 of the drive or output of the transmission is connected with the transfer box 13, which transmits power from the transmission 3 to the output shaft 14. Output shaft 14 is connected with the shaft 15 of the drive with differential gear 16, which is located between the side 17 of the timing of the engine 2 and the drive unit 4,intended for transportation on water, in the rear of the vehicle. Through the differential 16 the power of the engine is transmitted to the rear wheels of the vehicle type amphibious through the axis of the wheels as in a normal car.

Although this is not shown in figure 1, the transfer case 13 can contain a pinion gear, which is mounted for rotation on the output shaft of the transmission, and the driven gear, which is mounted for rotation on the output shaft 14 of the transfer case 13, so that power is transmitted between the two sprockets with the chain or belt.

The second variant implementation of the present invention will be described below with reference to figure 2, in which the same reference numbers are used to designate parts that are common with the embodiment shown in figure 1. Powertrain 10, essentially, the same as the power transmission 1 shown in figure 1, the only difference is that with the transfer case 13 is also provided a drive on the front wheels of the vehicle through the front shaft 19 of the drive and the differential 20. Inside the transfer case 13 or close to it can also be installed center differential (not shown).

1. Power transmission (1; 10) for vehicle type amphibious vehicle comprising an engine (2), located in the iniu with it the transmission (3) and node (5) intermediate PTO, located between the engine and the transmission, and the output (6) of the PTO unit is configured to transfer power to the unit (4) drive designed for transportation on water, installed in the rear of the vehicle type amphibious, with a shaft (8), and the output of the transmission is designed to transfer power to the differential (16)located in the rear of the vehicle type amphibious, characterized in that the PTO unit is located behind the transmission and the shaft (8) is below the oil pan (12) of the engine or through it.

2. Power transmission according to claim 1, characterized in that the differential is located behind the engine.

3. Power transmission according to claim 1 or 2, characterized in that the output of the PTO unit made in the form of an output shaft (6)connected with the shaft (8) of the drive, which runs below the oil pan of the engine or through it.

4. Power transmission according to claim 3, characterized in that the pallet contains the tunnel or the recess (11), through which the drive shaft.

5. Power transmission according to any one of claims 1 to 4, characterized in that the drive unit designed for transportation on water, is in line or essentially in line with the engine and transmission.

6. Power transmission according to any one of claims 1 to 5, characterized in that the output of the transmission is made with the possibility of peredav the change in the differential through the transfer case (13).

7. Power transmission according to claim 6, characterized in that it is arranged to transfer power to an additional differential (20)mounted in front of the vehicle, to drive the rotation of the front wheels of the vehicle.

8. Power transmission according to any one of claims 1 to 7, characterized in that there is a switch (9) in such a way that allows selective connection and disconnection of the drive intended for transportation on water.

9. Power transmission according to any one of claims 1 to 8, characterized in that the engine is made with possibility of installation on the vehicle so that the crankshaft of the engine is essentially along the Central longitudinal axis of the vehicle so that the front portion or side of the timing of the engine facing the rear of the vehicle.

10. Vehicle type amphibious, characterized in that it contains a power transmission in accordance with any of the preceding paragraphs.



 

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