KR100414258B1 - Cross support frame and cross frame for use on track trucks - Google Patents

Abstract

The present invention relates to a track truck side frame for use in a frame strut truck that stabilizes a cross strut extending between the side frames. The side frame has a bottom tension member and an upper compression member joined by end walls that slope in upward and outward directions. At the lower end of each end wall there is a bracket for use in mounting the cross pillar. The brackets each include first, second and third walls integral with the side frame and extending downward from the side frame. The first wall forms a wall for attachment of the cruciform struts and the second and third walls are perpendicular to the first wall and form a support for the first wall.

Description

Side frame integrated with cross-shaped prop support brackets used in railcar trucks

The present invention relates to a frame strut truck in which a pair of cross struts is used to stabilize a truck, and more particularly to an improved integrated fixture for a cross strut.

It is a primary object of the present invention to provide an improved and reinforced bracket for use on the side frame of a frame post for mounting a truck cross pillar.

Another object of the present invention is to provide a side frame bracket of a more economical and robust form than conventional welding assemblies.

Still other objects of the present invention will be described in the following specification, drawings and claims.

The invention provides a frame of the type described in U.S. Pat. It relates to a prop track truck. In patent '914, a cruciform strut is mounted to a plate 75 positioned between a slot formed by a flange and a flange formed by a plurality of walled flanges with a flange, the plate being welded in the flange. The present invention is an improvement of the above-mentioned Patent No. 914 in which the entire bracket for supporting the cross pillar is cast integrally with the side frame. According to the present invention, it is possible to provide a product that is simpler and more economical than Patent '914.

U. S. Patent No. 4,570, 544 describes a tracked truck having a pair of side frames supported on a conventional longitudinally spaced wheelset. To improve truck stability, the cross member extends between the side frames to increase the resistance of the side frames to relative longitudinal movement. An elastomeric member is positioned between the wheelset and the side frame to reduce the yaw stiffness of the wheelset. As a result, the truck's yaw and stiffness can be selected to provide optimum truck stability.

U. S. Patent No. 5,243, 920 describes a modification to the truck described in Patent No. 544, in which the clamp portion for retaining the cross struts located together at the midpoint between the side frames is improved. U.S. Patent No. 4,870,914 discloses an improved version of the bracket portion supporting the cross pillar. The present invention discloses the patent document '914 in that the cross-shaped posts for mounting the brackets are cast integrally with the side frame that is stronger than the welding assembly of the patent' 914 and also economically manufacture the side frame. It is an improvement of what became.

1 is a side view of a tracked truck of the present invention;

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

3 is a partially enlarged bottom view of the cruciform support bracket;

4 is a cross-sectional view taken along line 4-4 of FIG. 3;

5 is a cross-sectional view taken along line 5-5 of FIG. 3;

[Description of Symbols for Main Parts of Drawing]

10: side frame 12, 14: wheel set

16: bolster 18: spring

20, 22: Cruciform strut 24: Clamp

26 compression member 28 tension member

32: pedestal jaw portion 34: roller bearing

36 bracket 40 end block assembly

62: bridge element

In the figure, the side frame 10 is mounted to the wheel sets 12 and 14. Conventional roller bearings with wheelsets and side frames are joined by bolsters 16. The bolster is supported on the side frame by a spring 18.

The cruciform members 20 and 22 are diagonally connected between the side frames to provide good resistance to relative longitudinal movement between the side frames. The cross column is held together centrally by the clamp 24.

Each side frame includes an upper compression member 26 and a lower tension member 28, which are integrally coupled with an outwardly inclined end wall 30. A pedestal jaw portion 32 which extends from the end wall 30, in which the side frame rests on the roller bearing 34 located at the end of each wheelset, forming an opening.

Brackets 36 are used to mount the ends of each of the cruciform struts 20 and 22. The brackets are identical and are also shown in detail in FIGS. 3, 4 and 5. The bracket assembly includes a first wall 38 that extends vertically downward from the pedestal jaw portion 32 and forms an angle with the side frame such that the first wall 38 is perpendicular to the cruciform strut. The first wall has an opening 39 for mounting the end block assembly, indicated at 40. The end block assembly includes an elastomeric element 42 and a plate 44, which are welded to the inwardly facing side of the first wall 38, as in reference numeral 46. On the outward side of the wall 38, there is a second steel plate 48 welded to the first wall 38 and spaced apart from the washer 54 with the elastomeric element 52, as indicated at 50. Is held to the cross-shaped shore by bolts 56. Generally, the end block has a nose that extends into the interior of the hollow cross pillar.

The first wall 38 is also integral with the second wall 58 extending in the vertical downward direction from the pedestal jaw portion 32 and the angled end wall 30. Walls 38 and 58 are perpendicular to the curved joints indicated by reference numeral 60. The bridge element 62 used in connection with the vehicle progressor device found in the unloading terminal for a large track car extends in the direction of orientation from the junction 60. The bridge 62 is formed integrally with the side frame.

On the opposite side of the wall 38 there is a third wall 64 which is integral with the cast steel side frame and extends downwardly from the pedestal jaw portion 32. The third wall 64 again engages with the first wall 38 at a right angle and the junction is formed by the curved portion 66. The vehicle progressor contact 68, which acts in cooperation with the vehicle progressor that moves the large maneuvering track vehicle at the unloading terminal, extends forwardly from the third wall 64. The entire bracket assembly including the vehicle progressor contact portion and the bridge extending in the orientation direction are integral with the side frame and are cast into one unit when the side frame is manufactured.

The bracket for mounting the cross strut is located at the lower end of the upwardly angular wall 30 that joins the compression member and tension member of the side frame. The bracket has three walls that form a U-shaped structure with an opening.

The bracket shape and the fact that the bracket is integral with the side frame make it possible to economically manufacture a reinforced bracket or support for a cruciform strut that is better than the prior art.

While the invention has been described with reference to the preferred embodiments, it should be appreciated that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the claims.

Claims (5)

A side frame for use in a frame prop truck having stabilizing cross pillars extending between the side frames, An upper compression member and a lower tension member, An upwardly outwardly inclined end wall joining the compression member and the lower tension member; A bracket located at the lower end of each end wall for use in mounting the cruciform posts, Each bracket is integral with the side frame and extends downwardly from the side frame and has a first opening therein for mounting the cruciform strut, and integral with the first wall and the side frame and extends downward from the side frame. And a second wall perpendicular to the first wall, and a third wall integral with the first wall and the side frame and extending downward from the side frame and perpendicular to the first wall. And the second wall and the third wall jointly form a U-shaped bracket integral with the side frame for mounting of the cruciform strut. 2. The side frame according to claim 1, wherein the joint between the first wall and the second wall and the joint between the first and third wall are curved. 2. The side frame according to claim 1, comprising a bridge element extending in an orientation direction from the junction of the first wall and the second wall towards the tension member. 2. The side frame of claim 1 having a vehicle progressor contact portion extending forwardly integral with the third wall. A bolster extending between the two parallel side frames and the side frames, A pair of props each extending between the side frames and the truck inclined opposite the longitudinal axis, A first wall integral with the side frame and extending downward from the side frame, a second wall integral with the first wall and the side frame and extending downward from the side frame, and integral with the side frame and the first wall Means for mounting said strut end including a bracket having a third wall extending downwardly from the frame, The first wall, the second wall and the third wall jointly form a U-shaped bracket for mounting the cruciform strut.