JPH09118229A - Bracket unified with underframe beam and used for supportingcrossed post - Google Patents

Abstract

PROBLEM TO BE SOLVED: To select yaw rigidity and lateral directional rigidity of a carriage so as to bring about the best stability of the carriage by arranging an elastic member between a wheel set and a side beam to reduce yaw rigidity of the wheel set. SOLUTION: A side beam 10 has an upper compression member and a lower tensile member 28 joined together by tail end wall parts skewing outward and upward. Brackets 36 to be used to install interlinked columns 20 and 22 exist on the respective tail end wall parts. Both its brakes contain first, second and third walls 38, 58 and 64 extending downward from the side beam integrally with the side beam 10. The first wall forms a interlinked column installing wall together with the second and the third walls to constitute a support body of the first wall by crossing at a right angle to the first wall.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD OF THE INVENTION The present invention relates to three U.S. Pat. Nos. 4,5, of which two are assigned to the assignee of the present application, Park Ridge Standard Research and Development Company, Illinois.
70,544, 4,870,914 and 5,
No. 243,920, and is related to a beam car frame type rail car carriage. U.S. Pat. No. 4,870,914
In No. 6, the cross struts are mounted on a bracket formed by a plurality of walls having flanges and a plate 75 which can be placed in a groove formed between the flanges or a plate into which the flanges are welded. ing. The present invention relates to an improvement of U.S. Pat. No. 4,870,914, in which the entire bracket for supporting the cross struts or cross struts is integrally cast on the side frame of the underframe. The invention is simple and is described in US Pat.
It provides a more economical structure than that illustrated in 0,914.

[0002]

SUMMARY OF THE INVENTION The present invention is directed to a beam frame trolley in which a pair of cross struts is used to stabilize a bogie, and in particular to an improved and integrated mounting for the cross struts. Regarding It is the most important object of the present invention to provide an improved, essentially reinforced bracket for use on the side beams of a beam-frame bogie for mounting the cross struts of the bogie. Another purpose is to provide a side beam bracket that is more economical and stronger than previous welded and assembled ones. Other objects will be set forth in the following specification, drawings and claims.

[0003]

DETAILED DESCRIPTION OF THE INVENTION U.S. Pat. No. 4,570,544 discloses a railcar trolley having a pair of side beams supported on conventional longitudinally spaced wheel axles. For the purpose of improving the stability of the dolly, cross struts are stretched between the side beams to increase resistance to relative longitudinal movement of the side beams. An elastic member is arranged between the wheel axle and the side beam to reduce the yaw rigidity of the wheel axle. As a result, the yaw and lateral stiffness of the bogie can be selected to provide the best bogie stability.

US Pat. No. 5,243,920 relates to the trolley of US Pat. No. 4,570,544 with the cross struts at a certain position, generally at the midpoint between the two side burrs.
Disclosed is an improvement specifically identified in the context of a clamp that holds in one piece. U.S. Pat. No. 4,870,914 shows a related improvement of a bracket supporting crossed struts. It is an object of the present invention to improve upon US Pat. No. 4,870,914 in that the bracket is cast integrally with the side beam, providing a distinct economy in manufacturing the side beam, and used in that patent. And a side beam with a bracket for mounting the cross struts that is substantially stronger than the welded assembly.

In the drawings, the side beam is designated by 10, and the wheel axle 1
Riding on 2 and 14. A normal roller bearing mounts its wheel axle and the burrs on both sides are joined by a bolster 16. The bolster is supported on the side beams by springs 18.

The cross struts 20 and 22 provide the desired resistance to relative longitudinal movement between the two-sided burrs.
Are diagonally connected between the burrs on both sides. The cross column is centrally held by a clamp 24 at the center.

Each side beam has an upper compression member 26 and a lower tension member 28. The compression and tension members are connected together by a distal end wall portion 30 which is inclined outward and upward. A pedestal jaw portion 32 extends from the end wall portion 30 and forms an opening for a side beam to sit on a roller bearing 34 at each wheel axle end.

There is a bracket 36 which supports one end of each cross strut 20, 22. Each bracket is identical and one is shown in detail in FIGS. 3, 4 and 5. The bracket assembly includes one wall called the first wall 38. The wall 38 extends generally vertically and downwardly from the pedestal jaw 32 and forms an angle with the side beam so that it is orthogonal to the cross struts. The first wall is provided with holes 39 for mounting the termination block assembly shown generally at 40. The end block assembly may include a resilient component 42 and a plate 44 welded at point 46 inside the first wall 38. On the outside of the wall 38, a second steel plate 48 welded to the first wall 38 at a point 50.
Which leaves space from the washer 54 to secure the elastic component 52, while the entire termination assembly is held by bolts 56 on the cross struts. Conventionally, the termination block has a projection that extends into the hollow cross post for mounting purposes.

The first wall 38 is integral with the second wall 58, which is also generally vertical from the pedestal jaw 32 and from the beveled end wall 30. It extends downward. The walls 38 and 58 are generally orthogonal, with a curvilinear connection 60 therebetween. A bridging portion 62 extends rearward from the connecting portion 60 and is used by connecting to a freight car propulsion device at a loading station of the freight car. The bridging portion 62 may be integrated with the side beam.

Opposite the wall 38 is a third wall 64,
This wall is also integral with the cast steel side beam and extends downwardly from the pedestal jaw 32. The third wall 64 is again the first wall 38,
Connect at right angles, but the connection is formed by a curved portion 66. A contact portion 68 for the freight car propulsion device extends forward from the third wall 64, and this also functions in combination with the freight car propulsion device for moving the freight car at the loading station. The entire bracket structure including the contact portion for the freight car propulsion device and the bridge portion extending to the rear are all integrated with the side beam, and are cast as one unit at the time of manufacturing the side beam.

The bracket shown for mounting the cross struts is located at the lower end of the upwardly angled wall 30 which joins the compression and tension members of the side beam. The bracket has one hole and three walls forming a U-shaped structure. The shape of the bracket, and the fact that it is integral with the side beam, is economical in terms of manufacturing, and is a substantially strengthened bracket or support for a cross column that far exceeds that shown in the prior art. And both are provided.

While the preferred form of the invention has been shown and described, it should be understood that there are many variations, substitutions and modifications thereto.

[Brief description of the drawings]

FIG. 1 is a side view of a railcar dolly of the type described herein.

2 is a bottom view of the trolley shown in FIG. 1. FIG.

FIG. 3 is a partially enlarged bottom view illustrating a bracket for supporting a crossing strut.

4 is a cross-sectional view taken along plane 4-4 of FIG.

5 is a cross-sectional view taken along plane 5-5 of FIG.

Claims (5)

[Claims] 1. A side beam for a beam frame frame type bogie, wherein a stabilizing cross column extends between the side beams, and the side beam has an upper compression member, a lower tension member,
An upwardly outwardly sloping end wall portion connecting the compression member and the lower pulling member, and a bracket provided at a lower end of each end wall for supporting a cross strut, each bracket being A first wall, a second wall, and a third wall, the first wall extending downward integrally with the side wall and having an opening for supporting the crossing column; A wall extending downward integrally with the first wall and the side wall and being substantially perpendicular to the first wall; and a third wall integrally with the first wall and the side wall. It extends downward and is substantially perpendicular to the first wall, and the first, second, and third walls form a bracket that is substantially U-shaped as a whole, and are integrated with the side wall. A side beam that is characterized by supporting a crossed strut. 2. The side beam according to claim 1, wherein a joint between the first wall and the second wall and a joint between the first wall and the third wall are curved. The sidebar that is characterized by that. 3. The side beam according to claim 1, further comprising a bridging portion extending rearward and extending from a joint portion between the first wall and the second wall toward the pulling member. The side-bar to be featured. 4. The side beam according to claim 1, further comprising an integral protrusion that is integral with the third wall and extends forward to provide the bracket with a contact portion for a wagon propulsion device. The side-bar to be featured. 5. A railcar trolley comprising two parallel side beams and a bolster extending between them, and a side beam sloping opposite to a longitudinal axis of the trolley. A pair of extending columns and means for supporting both ends of the column having brackets, the brackets extending downward together with the side beams
Wall, a second wall integrally extending with the first wall and the side beam, and a second wall extending downward from the side beam and the first wall together with the first wall and the first wall. A railcar trolley having a third wall which, in combination with the two walls, forms a U-shaped bracket for mounting a cross strut.