JPH0834255A - Drive device of u-shaped frame vehicle - Google Patents

Abstract

PURPOSE:To enlarge power transmission capacity by driving front wheels by power on one hand distributed by a first differential device and rear wheels on the right and left sides by power on the other hand by a second differential device provided on an intermediate frame of a U-shaped frame through a bevel gear. CONSTITUTION:Power of an engine 4 is distributed by a first differential device 8 through a propeller shaft 7, and power distributed on one hand is transmitted to a front axel 11 to drive front wheels 12. Also, power distributed on the other hand is transmitted to a propeller shaft 14 arranged in such a manner that it passes a through shaft 13 and a center pin 3 at the center of rotation when a vehicle body is bent to distribute power by a second differential device 15 provided at the center of an intermediate frame 2a of a U-shaped frame 2. Furthermore, rear wheels 21 are driven by torque increased double through right and left shafts 16 of the intermediate frame 2a, a bevel gear 17 of right and left frames 2b, right and left shafts 18, and an epicyclic reduction gear 22. Consequently, it is possible to arrange members having excellent power transmission efficiency in order, increase power transmission capacity, and mount, the drive device easily irrespective of restrictions on space of the U-shaped frame vehicle.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive device for a U-shaped frame vehicle equipped with various types of removable luggage carriers such as containers and pallets.

[0002]

2. Description of the Related Art Conventionally, a vehicle of a frame structure in which a rear portion of this type of vehicle is a U-shape cannot be mounted in the rear portion of a normally used engine due to dimensional restrictions, and the rear portion of the vehicle due to a problem of power transmission. Even though it is difficult to drive the wheels, the axle weight ratio on the rear wheel side becomes high when the load is loaded due to the structure of the vehicle. The climbing ability is reduced.

Therefore, an engine is mounted in the front part, the front wheels are driven by the power of this engine, and an electric motor or hydraulic motor is mounted in the rear part, and the rear wheels are driven by the power of this electric motor or hydraulic motor. The structure to try is considered.

[0004]

However, when the above structure is adopted, the power transmission efficiency is low, and therefore, when a large electric motor or hydraulic motor is mounted,
There was a problem that it was difficult to mount it on the U-shaped frame due to space restrictions.

Therefore, the present invention has been made in order to solve the above-mentioned conventional problems, and by arranging members having excellent power transmission efficiency in an orderly manner, the power transmission capacity is increased and the space is restricted. An object of the present invention is to provide a drive device that can be easily mounted on a U-frame vehicle.

[0006]

Therefore, the U of the present invention is used.
In a vehicle body bending type steering vehicle in which a U-shaped frame 2 forming a U-shaped opening 1 with respect to a horizontal plane is provided in a rear portion, a drive device of a type frame vehicle is a vehicle front bending type engine 4 to a torque converter 5 and a transmission. 6
Is provided with a first differential device 8 for distributing the power transmitted to the propeller shaft 7 via the first differential device 8 and the front wheel 12 driven by one power distributed by the first differential device 8. The propeller shaft 14 to which the other power distributed by the one differential device 8 is transmitted is arranged so as to pass through the center of rotation when the vehicle body is bent, and the power transmitted to the propeller shaft 14 is distributed. Differential device 15 to U
Left and right shafts provided at the center of the intermediate frame 2a of the mold frame 2 and to which the power distributed by the second differential device 15 is transmitted.
16 and 16 are provided on the intermediate frame 2a of the U-shaped frame 2, and the power of the left and right shafts 16 and 16 is applied to both shoulders 2c of the U-shaped frame 2.
Left and right shafts transmitted via bevel gears 17 provided on 2c
18 and 18 are the left and right frames 2b of the U-shaped frame 2, respectively.
2b, which is driven by the transmitted power
It has 21 and 21.

[0007]

Since the drive device for the U-shaped frame vehicle of the present invention has the above-mentioned structure, the power transmitted from the engine 4 mounted on the front portion of the vehicle to the propeller shaft 7 via the torque converter 5 and the transmission 6 is first The front wheels 12 can be driven by the distribution by the differential device 8 and one of the distributed powers.

Further, the other power distributed by the first differential device 8 is transmitted to the propeller shaft 14 and is distributed to the left and right shafts 16 by the second differential device 15, and the distributed power is distributed to the umbrella. The left and right shafts 18, 18 are transmitted via the gears 17, 17 and the rear wheels 21, 21 can be driven by the transmitted power.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of a drive device for a U-shaped frame vehicle according to the present invention will be described below with reference to the drawings shown as embodiments.

FIG. 1 is a schematic view of a vehicle body bending type steering vehicle in which a U-shaped frame 2 constituting a U-shaped opening 1 is supported by a center pin 3 on a horizontal plane and mounted on a rear portion of the vehicle.

An engine 4, a torque converter 5 and a transmission 6 are mounted on the front part of the vehicle, and the engine 4 to the torque converter 5 and the transmission 6 are mounted.
There is provided a first differential device 8 for distributing the power transmitted to the propeller shaft 7 via the. Then, the one power distributed by the first differential device 8 is transmitted to the front axle 11 via the helical gear 9 and the hypoid gear 10,
The front wheels 12 are driven. Further, the other power distributed by the first differential device 8 is transmitted to the propeller shaft 14 via the through shaft 13.
The propeller shaft 14 is arranged so as to pass above the center pin 3, which is the center of rotation when the vehicle body is bent.

A second differential device 15 for distributing the power transmitted to the propeller shaft 14 is provided at the center of the intermediate frame 2a of the U-shaped frame 2. Further, in the intermediate frame 2a of the U-shaped frame 2, the second differential device 15 is provided.
The left and right shafts 16 and 16 to which the power distributed by is transmitted are provided. Also, the left and right frames 2b, 2 of the U-shaped frame 2
In b, left and right shafts 18, 18 are provided, which transmit the power of the left and right shafts 16, 16 via bevel gears 17, 17 provided on both shoulders 2c, 2c of the U-shaped frame 2, respectively. The power transmitted to the left and right shafts 18, 18 is the intermediate support bearings 19, 1.
9, via the bevel gears 20, 20 are transmitted to the planetary gear reduction gears 22, 22 built in the rear wheels 21, 21, respectively, and the torque is doubled by these planetary gear reduction gears 22, 22
It drives 21 and 21.

The left and right frames 2 of the U-shaped frame 2
The narrow spaces b, 2b are almost occupied by the rear wheels 21, 21, so there is little space left by the rear wheels 21, 21, but the power from the engine 4 is the first and second. Since it is divided into 1/4 by the differential devices 8 and 15, the left and right shafts 18,
18 may have a small diameter, and the left and right shafts 18, 18 can be arranged in the small space. Further, although the planetary gear speed reducers 22 and 22 have one stage in the embodiment, it goes without saying that they may have a plurality of stages.

[0014]

The drive device for a U-shaped frame vehicle according to the present invention is configured as described above, and members having excellent power transmission efficiency can be arranged in an orderly manner and the power transmission capacity is large. Therefore, it can be easily mounted on a U-frame vehicle, which has space restrictions.

[Brief description of drawings]

FIG. 1 is a schematic explanatory view showing an embodiment of a drive device for a U-shaped frame vehicle of the present invention.

FIG. 2 is a perspective view of a U-shaped frame vehicle equipped with the drive device of the present invention.

[Explanation of symbols]

 1 Opening 2 U-shaped Frame 2a Middle Frame 2b Left and Right Frames 2c Both Shoulders 4 Engine 5 Torque Converter 6 Transmission 7 Propeller Shaft 8 First Differential Gear 12 Front Wheel 14 Propeller Shaft 15 Second Differential Gear 16 Left and Right Shaft 17 Bevel Gear 18 Left and right shaft 21 Rear wheel

Claims (1)

[Claims] 1. A vehicle body bending steering vehicle equipped with a U-shaped frame (2) constituting a U-shaped opening (1) on a horizontal surface at a rear portion thereof, wherein an engine (4) mounted at a front portion of the vehicle.
A first differential device (8) for distributing the power transmitted from the vehicle to the propeller shaft (7) via the torque converter (5) and the transmission (6) is provided and distributed by the first differential device (8). The front wheel (12) driven by one of the motive powers, and the propeller shaft (14) to which the other motive power distributed by the first differential device (8) is transmitted is the center of rotation when the vehicle body is bent. A second differential device (15) arranged so as to pass through the point and distributing the power transmitted to the propeller shaft (14) is provided in the center of the intermediate frame (2a) of the U-shaped frame (2), The left and right shafts (16) (16) to which the power distributed by the second differential device (15) is transmitted are provided in the intermediate frame (2a) of the U-shaped frame (2), and the left and right shafts (16) (16) are provided. Power the U-shaped frame (2) on both shoulders (2 ) (Bevel gear (17 provided on 2c)) (lateral axis that is transmitted through the 17) (18) (1
8) to the left and right frames (2) of the U-shaped frame (2)
b) A drive device for a U-shaped frame vehicle, which is provided in (2b) and is provided with rear wheels (21) and (21) driven by the transmitted power.