JP4076353B2 - Railway vehicle power unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention directly attaches an electric motor to a gear device, a large gear fixed to an axle, one of which is a small gear attached to the motor, and the other is a small gear attached to the brake disk arranged at right angles to each other. The present invention relates to a vehicle power transmission device.
[0002]
[Prior art]
As shown in the plan view of FIG. 6, in the conventional railway vehicle power unit, the electric motor 5 is mounted directly on the carriage 7, and the power is transmitted through the joint 4 attached between the electric motor 5 and the gear unit 3. It is transmitted from the inner small gear to the large gear fitted to the axle 1. Wheels 2 are attached to the left and right sides of the axle 1.
Further, a brake device (not shown) is generally attached to the carriage 7, and a system in which the brake shoe 6 is pressed against the treads of the left and right wheels 2, 2 is generally used.
[0003]
[Problems to be solved by the invention]
(A) As shown in FIG. 6, the conventional railway vehicle power unit presses the brake shoe 6 against the tread surface of the wheel 2, and frictional heat is generated at that time. When using elastic wheels with rubber for the purpose of soundproofing, it was necessary to fit another brake disc on the axle to cope with heat generation. For this reason, when the brake disk is attached, the configuration of the motor, the joint, and the gear device between the wheels may be difficult.
(B) As shown in FIG. 6, the conventional railway vehicle power device has the left and right wheels 2 attached to one axle 1. In this case, even if the vehicle body has a low floor structure for getting in and out of a wheelchair for the disabled, and the passage is secured, the axle passes under the vehicle body floor surface, the floor surface should be lower than the axle upper surface. I could not.
[0004]
The present invention was devised in view of the above-mentioned points, and the object of the present invention is to make it possible to use a rubber-filled elastic wheel by configuring the gear device with a brake device and a brake small gear. In addition, by placing the motor and brake device at right angles to the axle on the outside of the wheel, there is no restriction on the width of the vehicle body. In addition, this set of power unit transmits power even with independent wheel and axle structure This makes it possible to develop a low-floor vehicle by providing a single axle between the left and right wheels, and to provide this device as part of barrier-free. is there.
[0005]
[Means for Solving the Problems]
In other words, the means to achieve that purpose is
1. 2. The gear device according to claim 1, wherein a motor is mounted directly on the motor mounted on the carriage by providing a suspension seat on the outer frame of the motor, a small gear fitted to the shaft of the motor, and substantially perpendicular to the small gear. A large gear meshing with the large gear, a shaft fitted to the large gear, wheels mounted on both ends of the shaft, a small brake gear meshing substantially perpendicular to the large gear, and the small brake gear A brake disc mounted on the brake disc, and a brake device engaged with the brake disc and mounted on the gear unit, wherein the electric motor and the brake unit are arranged at right angles to the axle , and these power units The device is provided on the outside of the wheel portion mounted at both ends of the shaft, and is equipped with these power devices on the front and rear of the carriage, or on one of the front and rear with a power device and the other with no power device. Iron characterized by Which is a power device for a vehicle.
[0006]
2. In claim 2,
2. The railway vehicle power unit according to claim 1, wherein the shaft fitted to the large gear is not mounted on a shaft common to both wheels, but is provided independently for each wheel.
Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1 is a cross-sectional view of a railway vehicle power unit according to an embodiment of the present invention, FIG. 2 is a side view as viewed in the direction of arrow A in FIG. 1, FIG. 3 is a side view as viewed in the direction of arrow B in FIG. FIG. 5 is a plan view of the power unit according to claim 1 attached to the carriage. FIG. 5 is a plan view of the power unit according to claim 2 attached to the carriage. It is.
1 to 3, a suspension seat 10 is provided on the outer frame of the electric motor 5 and is mounted on a carriage. Inside the suspension seat 10, a shock absorbing rubber (not shown) is inserted in order to absorb an impact during traveling.
[0008]
An input small gear 12 of a bevel gear or a bent bevel gear is attached to the shaft of the electric motor 5.
The electric motor 5 is directly fastened and fixed by the gear device 3 and fastening bolts. A large gear 13 fitted to the axle 1a is attached to the gear device 3 and is arranged at right angles to the input small gear 12.
An axle bearing 11 and a wheel 2a are fitted on the axle 1a. The wheel 2a in FIG. 1 is composed of an elastic wheel containing rubber. A cart not shown is supported by an axle bearing 11.
On the other hand, a small gear 14 for braking, to which a brake disk 8 is attached, is disposed at right angles to the large gear 13 and meshes with the large gear 13 in the gear device 3.
A brake device 9 having a structure for sandwiching a brake disk 8 is attached to the gear device 3.
[0009]
FIG. 4 is a plan view showing a state in which the power unit is incorporated in a carriage composed of two wheels 2 and 2 on one axle 1.
FIG. 5 is a plan view showing a state in which this power unit is incorporated in a carriage composed of independent elastic wheels 2a and independent axles 1a.
[0010]
The operation of the power unit configured as described above will be described with reference to FIG.
When the motor according to the present invention is used, the torque of the electric motor 5 is transmitted to the large gear 13 in the gear unit 3 from the input small gear 12 attached to the electric motor 5 during start-up and acceleration, and the axles 1, 1a, wheels 2 are transmitted. , 2a.
During braking, the brake device 9 attached to the gear device 3 acts to sandwich the brake disk 8 of the brake small gear 14 and the braking torque is transmitted to the large gear 13 to the axles 1, 1a and the wheels 2, 2a. It is transmitted.
During startup and acceleration, the brake small gear 14 and the large gear 13 are engaged with each other in an unloaded state.
Further, the braking performance of the vehicle can be adjusted by increasing or decreasing the number of teeth of the brake small gear 14.
In this way, the railway power unit can be activated and braked and the braking performance can be changed by the electric motor and the brake device attached to one gear device.
[0011]
【The invention's effect】
As described above, according to the present invention,
By providing a small gear with a brake disk in the gear device and attaching the brake device, it is possible to employ a rubber-filled elastic wheel that cannot use a brake on the wheel tread.
In addition, by using a power device in which an electric motor and a brake device are arranged at right angles to the axle on the outside of the wheel, it becomes possible to transmit the power of the independent wheel and axle, and as a result, there is no axle at the bottom of the vehicle body. The floor surface of the vehicle can be lowered without being restricted by the axle, and a wheelchair can be boarded and exited and a passage can be secured.
Furthermore, there is no joint between the electric motor and the gear device, and the brake device is arranged and attached to the gear device in a symmetrical position with the electric motor. Therefore, when the power device is attached to the carriage, the distance between the axes of the carriage is not increased. Can be configured.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of a railway vehicle power unit according to an embodiment of the present invention.
FIG. 2 is a side view taken in the direction of arrow A in FIG.
FIG. 3 is a side view taken in the direction of arrow B in FIG. 1;
FIG. 4 is a plan view of a state in which the power unit according to claim 1 is attached to a carriage.
FIG. 5 is a plan view of the power unit according to claim 2 attached to a carriage.
FIG. 6 is a plan view showing a conventional railway vehicle power unit.
[Explanation of symbols]
1 axle
1a Independent axle 2 wheels
2a Elastic wheel 3 Gear device 4 Joint 5 Electric motor 6 Brake shoe 7 Dolly 8 Brake desk 9 Brake device
10 Hanging seat
11 Axle bearing
12 Input small gear
13 Large gear
14 Small gear for brake

Claims (2)

A gear device provided with a suspension seat on the outer frame of the electric motor and directly attached to the electric motor mounted on the carriage, a small gear fitted to the shaft of the electric motor, and a large gear meshing with the small gear at a substantially right angle A shaft fitted to the large gear, wheels attached to both ends of the shaft,
A brake small gear meshing at a substantially right angle with the large gear, the brake disk mounted on the brake small gear, and a brake device engaged with the brake disk and mounted on the gear device , A power device in which the electric motor and the brake device are arranged at right angles to the axle ,
These power units are provided outside the wheel portions attached to both ends of the shaft, and these power units are provided in front of and behind the carriage, or one of the front and rear is provided with a power unit, and the other is provided with a power unit. A railway vehicle power plant characterized by not comprising the rail vehicle.   2. The railway vehicle power unit according to claim 1, wherein the shaft fitted to the large gear is not mounted on a shaft common to both wheels, but is provided independently for each wheel.

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