JPH0784171B2 - Vehicle towing device - Google Patents

Description

TECHNICAL FIELD The present invention relates to a vehicle body towing device, and more particularly to a Z-link type vehicle body towing device suitable for vertical vibration and longitudinal vibration.

[Conventional technology]

In the conventional vehicle body towing device, for example, as described in Japanese Utility Model Publication No. 58-1406, the two links are configured to be horizontal to the rail on the longitudinal side surface of the vehicle body.

[Problems to be solved by the invention]

In the above-mentioned conventional technology, the length of the link is determined or the height of the link is determined depending on the configuration of the horizontal frame of the bogie frame. However, there is a problem in that the spring constant for vertical vibration increases and the riding comfort deteriorates. In the latter case, the height is not appropriate, which causes the problem of longitudinal vibration.

An object of the present invention is to reduce the equivalent spring constant in the vertical direction of the link, which is inconvenient for the vertical vibration, as much as possible to improve the riding comfort.

[Means for solving problems]

The above object is to position the respective connection points of the center pin receiver and the link below the horizontal beam, and the connection point of the link and the horizontal beam is more than the connection point of the central pin receiver and the link. This can be achieved by providing it above.

[Work]

Each connection point between the center pin receiver and the link is located below the horizontal beam, and the connection point between the link and the horizontal beam is provided above the connection point between the center pin receiver and the link. Therefore, it is possible to increase the length of the link without being restricted by the position of the lateral beam determined by the configurations of the main electric motor, the brake device, and the drive device. Since the length of the link is long, it is effective in reducing the equivalent vertical spring constant of the link when the vehicle body vertically vibrates, and the riding comfort can be improved.

Further, when the bogie is viewed from the side that is balanced in the traveling direction, if the intersection of the two links is located at the center of gravity between the bogie springs, the pinching center height of the bogie and the center of the towing position match. Therefore, the occurrence of longitudinal vibration is reduced.

〔Example〕

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

FIG. 1 is a Z-link type traction device as viewed from the side in the longitudinal direction of the vehicle body, FIG. 2 is a plan view of a bogie having the traction device of FIG. 1, and FIG. 3 is a front-back vibration calculation model of the vehicle body. FIG. 4 and FIG. 4 are diagrams showing the relationship between the height from the center of gravity between bogie springs to the Z link and the longitudinal vibration generated in the vehicle body.

FIG. 2 is a plan view of a bogie including an air spring 3, a wheel 5 and a towing device 4 capable of large displacement in a relative rotation direction of the bogie frame 2 and the car body 1. FIG. 1 is a view seen from the side surface in the longitudinal direction of 1. Car body 1
The view as seen from the side surface in the longitudinal direction is a view as seen from a side surface parallel to the traveling direction of the carriage. Center pin 15 on body 1
Are attached by bolts 6. The rubber bush 7 is fitted to the tip of the center pin 15, and the center pin receiver 11 is attached to the outside of the center pin 15 by the special bolt 12.
15 is fixed. The center pin receiver 11 has brackets 10a and 10b provided obliquely to the traveling direction. Bracket 1
The tips of 0a and 10b are located below the horizontal beams 14 and 14. In addition, link 9 is provided on the surface of the horizontal beams 14 and 14 facing the center pin 15 side.
Brackets 13 and 13 for attaching a and 9b are provided. The brackets 13a, 13b and the brackets 13, 13 are connected by links 9a, 9b. Spherical rubber bushes 8a and 8b are arranged at each connection point. These constitute the towing device 4.

When viewed from the side surface parallel to the traveling direction, the intersection of the links 9a and 9b coincides with the point A which is the center of gravity between the bogie springs.

Further, the rubber bushes 8a, 8b are formed in a spherical shape so that the spring constant becomes the smallest when the center pin 15 moves in the vertical direction.

FIG. 3 shows a spring system for examining the longitudinal vibration of the bogie and the vehicle body. The height h between the towing device 4 and the bogie spring is h.
The dimension h and the vibration generated in the vehicle body are as shown in FIG. 4, and the intersection of the links 9a and 9b is made to coincide with the point A which is the center of gravity between the bogie springs. The longitudinal vibration is minimized.

Further, the lengths of both links 9a, 9b can be made large irrespective of the configuration of the sideways position, and the equivalent spring constant of the links in the up-and-down direction can be made small, so that there is no problem of deterioration of riding comfort.

〔The invention's effect〕

ADVANTAGE OF THE INVENTION According to this invention, it is not affected by the horizontal structure of a bogie frame determined by a main electric motor, a brake, a drive device, etc.
The length of the link can be increased and the riding comfort can be improved.

[Brief description of drawings]

1 is a side view in the longitudinal direction of a vehicle body showing an embodiment of a vehicle body towing apparatus according to the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a front-back vibration calculation model diagram of the vehicle body, and FIG. [Fig. 4] is a diagram showing a calculation result of longitudinal vibration in the model of Fig. 3. 1 ... Car body, 2 ... Bogie frame, 3 ... Air spring, 4 ... Towing device, 5 ... Wheel axle, 6 ... Bolt, 7 ... Rubber bush, 8a, 8b ... Rubber bush, 9a, 9b. Links, 10a, 10b
…… Bracket, 11 …… Center pin receiver, 12 …… Special bolt, 13 …… Bracket, 14 …… Horizontal, 15 …… Center pin

Claims (2)

[Claims] 1. A vehicle body towing device in which both ends of a center pin receiver attached to a center pin of a vehicle body are connected to a horizontal beam of a bogie frame via two links, and each of the center pin receiver and the link is provided. A towing device for a vehicle body, wherein a connecting point is located below the lateral beam, and a connecting point between the link and the lateral beam is provided above a connecting point between the center pin receiver and the link. . 2. When the dolly is viewed from a side surface parallel to the traveling direction, the intersection of the two links is located at the center of gravity between the dolly springs. A towing device for the car body.