JP2000016286A - Power carriage for railway rolling stock - Google Patents

Abstract

PROBLEM TO BE SOLVED: To simplify a gear box and components of a carriage so as to reduce a cost and weight of the carriage by altering structure of the carriage and integrating the gear box in a parallel cardan driving device with the components of the carriage. SOLUTION: One end of a gear box 1 is supported by means of an axle 4 fitted with a wheel 3 via a journal bearing 2. The other end of the gear box 1 is supported by means of a receiver 7 fixed to a carriage frame 6 via an elastic body 5. An electric motor 8 is installed to the carriage frame 6 by means of receivers 9, 10 fixed in the carriage frame 6. The power of the motor is transmitted to a pinion 12 via a flexible coupling 11, and then, transmitted to a gear 16 fitted in the axle 4 via an intermediate gear 13. A towing force by the wheel 3 is transmitted to the carriage frame 6 via the elastic body 5 and the receiver 7 so as to be transmitted to a vehicle body 46 via a towing device 19 between a receiver 17 and a center pin 18. Mass of the vehicle body 46 is supported by means of the carriage frame 6 via a bolster spring 20 and supported further by means of an axle spring 21 and the wheel 4 via the journal baring 2.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power bogie for a railway vehicle.

[0002]

2. Description of the Related Art An example of a conventional power bogie for a railway vehicle will be described with reference to FIG. FIGS. 3A and 3B show a power bogie having a conventional axle beam type axle box support device. FIG. 3A is a plan view and FIG. 3B is a side view. In FIG. 3, the power bogie for a railway vehicle is configured as follows. A, the mass of the vehicle body 46 is received by the bogie frame 32 via the pillow spring 31 and the shaft spring 3
Wheels 35 are received by two sets of wheel sets 37 fitted to an axle 36 via journal bearings 3 (not shown) housed in the axle box 3. The two sets of wheel sets 37 are parallel to each other.
, And is held by being constituted by the bogie frame 32 so as to be rotatable by pins 39. C, an electric motor 40 is fixed to the bogie frame 32, and the rotational force of the electric motor 40 is transmitted to the wheel shaft 37 via a flexible joint 41 and a gear device 42. This is called a parallel cardan drive. D. The traction force of the wheel set 37 is transmitted from the bogie to the vehicle body 46 by the traction device 43. The towing device 43 is the bogie frame 3
Reference numeral 2 has a function of enabling a bogey removal on a horizontal surface, and is engaged with the vehicle body 46. E, the gear box 44 of the gear device 42 is held by a bearing 36 (not shown) on the axle 36, and the other end is supported by the bogie frame 32 via a suspension device 45.

[0003]

In the power bogie having such a structure, a. The gear box 44 is so large that the two wheel sets 37 can be held in parallel to the bogie frame 32 in the same manner as the shaft beam 38. It has the rigidity. B. A journal bearing (not shown) connects the gear box 44 to the axle 36.
It has enough capacity to support it. From this, what has been studied in terms of the cost and weight of the trolley is the gist of the present invention. The present invention has been made in view of the above points, and aims at solving these drawbacks by integrating the gear box 44 and the shaft beam 38 and supporting the gear box 44 with the axle 36. An object of the present invention is to provide a power bogie for a railway vehicle in which a bearing and a journal bearing are integrated to simplify components of a gear device and a bogie, thereby reducing the cost and weight of the bogie.

[0004]

In order to achieve the object, a truck for a railway vehicle is constituted by the following items (a) to (e) or a part of the structure of the truck according to the items (a) to (e) The gear device in the parallel cardan driving device is integrated with the components of the bogie. A, the large gear of the parallel cardan drive device is fitted to the center of the axle constituting the wheel set, and is supported by the axle via a journal bearing formed between the large gear and both wheels. A) The other end of the gear box is fixed to a center portion of the side wall of the bogie frame via an elastic body that restrains the wheel shaft in a direction in which the bogie removes stiffness. (C) The bogie frame is configured with an axial spring between the bogie frame and the sternal bearing, and the vehicle body is configured with the bogie frame via a pillow spring. D) The electric motor is fixed to the bogie frame and connected to the pinion shaft of the gear device via a flexible joint. (E) limiting the restraint of the wheel set to the bogie frame by the elastic body in the above item (a) to a direction in which the torque reaction force of the gear device is received; Is obtained. For example, a conical laminated rubber type axle box support structure is configured. Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A) As described in A) to D) above, if the gear box of the parallel cardan driving device is supported by a journal bearing having one end disposed inside both wheels and the other end is elastically supported by a bogie frame, The vertical displacement of the bogie frame relative to the wheel axle due to the deflection of the shaft spring is made possible by the elastic body absorbing a small rotational displacement between the gear box and the bogie frame, and the characteristics of the elastic body in the direction in which the bogie is steered. If this is taken into consideration, the wheel set can be restrained. B) Since a flexible joint is interposed between the electric motor fixed to the bogie frame and the gear device having one end elastically supported by the bogie frame, it can absorb a slight displacement to transmit the rotational force. it can. (C) The traction force due to the rotation of the wheel set is transmitted to the bogie frame via the gear device, and is transmitted from the bogie frame to the vehicle body by a towing device used for a general bogie. D) The vehicle body is supported by the bogie frame via a pillow spring, and is supported by the journal bearing supporting the gear box by an axle via a shaft spring. (E) In the case of the above structure, the displacement between the bogie frame and the wheel set is not restrained by the gear device, but is restrained by the shaft spring portion. At this point, the traction force of the wheel set is also transmitted to the bogie frame. The mounting portion of the gear device in the bogie frame can receive only the torque reaction force of the gear device.

FIG. 1 shows an embodiment of a power bogie for a railway vehicle according to the present invention, wherein (a) is a plan view and (b) is a side view. 1 (a) and 1 (b), a gear box 1 is supported via a journal bearing 2 on an axle 4 on which wheels 3 are fitted. The other end of the gear box 1 is supported by a support 7 fixed to a bogie frame 6 via an elastic body 5. The motor 8 is a bogie frame 6
A structure in which the power is transmitted to a small gear 12 via a flexible joint 11 and transmitted to a large gear 16 fitted to the axle 4 via an intermediate gear 13 via receivers 9 and 10 fixed to the bogie frame 6. It is.

In this case, the intermediate gear 13 meshing with the small gear 12 and the large gear 16 is supported by the bearing 15 in the two wheels 3 so that the motor 8 has the axial length. It is not necessary to extend the center distance of the gear device 14 by inserting the intermediate gear 13 if it is short enough to be able to be configured together with the flexible joint 11 between the gears.

[0008] The traction force of the wheels 3 is transmitted to the bogie frame 6 via the elastic body 5 and the receiver 7, and the receiver 17 and the center pin 1
8 and transmitted to the vehicle body 46 via the towing device 19. The mass of the vehicle body 46 is supported by the bogie frame 6 via the pillow spring 20 and further supported by the axle 4 via the shaft spring 21 and the journal bearing 2. In addition, the bogie frame 6 has an integrated welded structure including a horizontal beam 6a, a side beam 6b, and a pillow spring receiver 6c. FIG. 2 is a view similar to FIG. 1 showing another embodiment of the present invention. In FIG. 1, a portion of the shaft spring 21 is reduced by relaxing the restraint of the elastic body 5 of the gear device 14 on the bogie frame 6. In addition, a conical laminated rubber type shaft spring 22 shown in FIG. 2 is provided.

[0009]

As described above, according to the present invention, the conventional axle box including the journal bearing can be eliminated, and the bearing via the portion where the gear box is supported by the axle can be eliminated. Thus, the weight and cost of the truck can be reduced, and it is extremely useful in practice.

[Brief description of the drawings]

FIG. 1 is a diagram showing one embodiment of the present invention.

FIG. 2 is a diagram showing another embodiment of the present invention.

FIG. 3 is a diagram showing an example of the related art.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Gear box 2 Journal bearing 3 Wheel 4 Wheel 5 Elastic body 6 Bogie frame 6a Side beam 6b Side beam 6c Pillow spring receiver 7 Receiver 8 Electric motor 9 Receiver 10 Receiver 11 Flexible joint 12 Small gear 13 Intermediate gear 14 Gear device 15 Bearing 16 Large gear 17 Receiver 18 Center pin 19 Towing device 20 Pillow spring 21 Shaft spring 22 Conical laminated rubber type shaft box support device 31 Pillow spring 32 Bogie frame 33 Shaft spring 34 Shaft box 35 Wheel 36 Axle 37 Wheel shaft 38 Shaft beam 39 Pin 40 Motor 41 Flexible joint 42 Gear device 43 Towing device 44 Gear box 45 Suspension device 46 Body

Claims (1)

[Claims] 1. A power bogie for a railway vehicle, wherein a gear is fitted to a central portion of a wheel constituting a wheel set, and the gear is used as a large gear of a gear device for transmitting a rotational force from the electric motor to the wheel set. A parallel cardan drive device comprising a flexible joint transmitting torque, and a gear train transmitted through a gear device engaged with the flexible joint, and a journal between the gear device and both wheels of the wheel shaft. Provide a bearing. A gear box of the gear device is supported by an axle via the journal bearing, and the other end is fixed via an elastic body to a center portion of a transverse beam of a bogie frame supporting the vehicle body via a pillow spring. C) The bogie frame has a shaft spring interposed between the bogie frame and the journal bearing. D) The electric motor is fixed to the bogie frame and connected to a small tooth shaft that engages with the large gear of the gear device via a flexible joint. A power bogie for a railway vehicle configured as described above.