JPH01160776A - Bogie structure for rolling stock - Google Patents

Abstract

PURPOSE:To make it possible to make a bogie frame light-weight and to aim at shortening the wheelbase by securing an upward center pin on a cross beam of the bogie frame, and by providing a fitting hole part in a vehicle body frame through the intermediary of a vibration-proof rubber so as to eliminate the necessity of formation of a hole in the cross beam of the bogie frame. CONSTITUTION:A vehicle body frame 1 attached thereto with a vehicle body 11 is supported to a bogie frame 13 through the intermediary of a vehicle body supporting rubber 12, and the bogie frame 13 is supported to axle boxes 16 provided at both ends of an axle 15, through the intermediary of axle springs 14. An upward center pin 2 for transmission of traction force is fixed to a cross beam 5 of the bogie frame, and a fitting hole part 18 is provided in the vehicle body frame 1 through the intermediary of a vibration-proof rubber 17 so as to form a center plate block 18. Due the provision of the center pin 2 on the upper surface of the cross beam 5 of the bogie frame, it is possible to eliminate the necessity of formation of a fitting hole part 18, and accordingly, it is possible to use a thin beam as the cross beam 5. Thereby it is possible to aim at making the bogie frame lightweight and at shortening the wheelbase without deteriorating the characteristics of the vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a bogie for a railway vehicle, and more particularly to a bogie structure that achieves a shortened wheelbase and lightweight bogie without impairing the characteristics of the vehicle.

[Prior Art] As shown in the conventional example shown in FIGS. 4 and 5, a conventional bogie structure for a railway vehicle has a vibration-proofing rubber 3. It had a structure in which it was fitted into the six 6 of the bogie frame cross beam 5 through the lower center plate 4 to transmit traction force. Further, the height h of the point of application of this traction force was preferably as small as possible in order to prevent the axle load from shifting in the longitudinal direction of the vehicle body.

For this reason, the bogie frame cross beam 5 was bent downward to lower the center plate part 7, and a 66 for receiving the lower center plate 4 was opened. (Utility Model Publication No. 58-9804) [Problem to be solved by the invention] However, since the bogie frame cross beam must be designed to withstand the large load applied when transmitting traction force, the conventional bogie frame cross beam is Dimensions and strength of the hole that receives the plate
The width must be equal to the dimensions that can withstand the load caused by the traction force. Therefore, the cross beam occupies a relatively large space, which determines the arrangement of the motor, etc., resulting in a long wheelbase and a problem in that the weight of the truck as a whole increases.

An object of the present invention is to shorten the wheelbase and reduce the weight of a bogie without impairing the characteristics of the vehicle.

[Means for solving problems]

In order to achieve the above object, in the railway vehicle bogie structure of the present invention, a center pin attached to the car body underframe is fitted into a hole provided in the bogie frame cross beam, and the bogie is inserted through the center pin. In the railway vehicle bogie structure in which traction force is transmitted to the car body, the center pin is fixed upward on the bogie frame cross beam and is fitted into a hole provided in the car body frame. It is something.

[Effect]

According to the above configuration, by installing the center pin for transmitting traction force on the bogie frame cross beam, the cross beam does not require a hole for the lower center plate, and the lack of a hole increases the strength of the cross beam. can be made thinner. The wheelbase can also be shortened due to the narrower width of the cross beams, making it possible to reduce the weight of the bogie.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 3.

Note that the same reference numerals are given to the same structural parts as those of the conventional truck structure, and the explanation thereof will be omitted.

The car body underframe 1 to which the car body 11 is attached has a car body support rubber 12
The bogie frame 13 is supported by an axle box 16 provided at both ends of a wheel axle 15 via an axle spring 14 . A center pin 2 is attached to the upper surface of the cross beam 5 of the bogie frame 13, and a vibration isolating rubber 17 and a center plate block 18 are fitted to the tip of the center pin 2. This center plate block 18 is fitted into a hole 19 provided on the lower surface of the vehicle body frame 1, and transmits traction force. When the truck 20 passes through a curve, the vibration isolating rubber 17 at the tip of the center pin 2 is twisted and the truck 20 rotates.

Here, the vehicle body support rubber 12 is hard in the vertical direction and has little deflection, and is soft in the lateral direction and has spring characteristics that reduce rotational resistance of the truck 20.

The axial spring 14 has a small spring constant to take a large amount of deflection.

In this embodiment, since the center pin 2 is attached to the E surface of the bogie frame cross beam 5, it is not possible to reduce the height H of the point of application of traction force due to the structure. The height is set to be the same as that of the truck 20, and the inclination of the truck 20 is balanced by using hard vehicle body support rubber 12 in the vertical direction to prevent axle load movement in the front and rear direction. 4.Although the vehicle body support rubber 12 is hard and has little deflection in the vertical direction, since the shaft spring 14 is made soft, the spring constant of the entire bogie is small, providing a good riding comfort.

Therefore, if this embodiment is used, by attaching the center pin to the upper surface of the bogie frame cross beam, there is no need for a hole in the cross beam to receive the center plate block, and the strength is increased due to the lack of a hole.
The cross beams can be made thinner.

As described above, according to this embodiment, the wheelbase can be shortened without impairing the characteristics of the vehicle, and the weight of the truck can be reduced.

【Effect of the invention〕

As described above, according to the present invention, the center pin that transmits traction force is fixed on the bogie frame cross beam, and the hole into which the center pin fits is provided in the car body underframe, so that the center pin can be fitted to the bogie frame cross beam. There is no need to provide matching holes, and the strength can be maintained with a relatively small bogie frame cross beam, resulting in a shorter wheelbase9.
The weight of the truck can be reduced.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a side view showing one embodiment of the present invention, and Fig. 2 is a side view showing an embodiment of the present invention.
3 is a plan view of FIG. 1, FIG. 4 is a sectional view showing the central pin portion of the conventional example, and FIG. 5 is a plan view of FIG. 4. 1... Vehicle body underframe, 2... Center pin, 5... Bogie frame cross beam, 6.19... Hole, 12... Vehicle body support rubber, 1
4... Axis spring, 17... Anti-vibration rubber, 20... Trolley.

Claims (1)

[Scope of Claims] 1. A railway vehicle in which a center pin attached to a car body underframe fits into a hole provided in a cross beam of the car frame, and the traction force of the bogie is transmitted to the car body through the center pin. 1. A bogie structure for a railway vehicle, wherein the center pin is fixed upwardly on the bogie frame cross beam and is fitted into a hole provided in the body underframe. 2. The bogie structure according to claim 1, wherein the point of application of the traction force by the center pin coincides with the height of the coupler of the vehicle body. 3. Anti-vibration rubber is installed in the hole provided in the body underframe into which the center pin fits, and furthermore, a vibration isolating rubber is installed between the bogie frame and the body underframe with characteristics of being hard in the vertical direction and soft in the lateral direction. Claims 1 or 2, characterized in that a vehicle body support rubber having the following characteristics is attached, and an axle spring having soft spring characteristics is attached between the bogie frame and the wheel axle. bogie structure.