RU173553U1 - RAILWAY VEHICLE HITCH HOUSING - Google Patents

Abstract

The utility model relates to the field of railway transport and is intended for use in an automatic coupler of a freight car. The automatic coupling body is a hollow casting consisting of a liner and a head part. The shank is made with a rectangular cross-section. Inside the shank, longitudinal stiffening ribs are made on the walls, having a constant height along the length from the end part of the shank with transition to the head part. On the walls of the shank with stiffeners there is a section L with a wall thickness less than the thickness of the walls of the shank outside this section. To reduce the mass and metal consumption of the automatic coupler case, the wall thickness in section L is made variable with a uniform decrease of no more than two times.

Description

The utility model relates to the field of railway transport and is intended for use in an automatic coupler of a freight car.

A known automatic coupler made in the form of a hollow body consisting of a head part and a shank, the cross section of which combines an external rectangular shape and an internal ellipsoid, while a stiffener is made on the side wall from the side of a small tooth in the transition zone from the head to the shank (RU No. 2179127 C1, publ. 02/10/2002).

In this automatic coupler, increased strength and a reduced level of damage in operation are ensured, in particular, due to the manufacture of shank walls with a significant thickness.

Known standard automatic coupling model CA-3, adopted for the closest analogue, which is a hollow body consisting of a head part and an elongated shank made with a through hole in the end part and with a rectangular cross-section in the area between the end part of the shank and the head part of the hitch and equipped with longitudinal internal stiffeners on this section, while the walls of the shank with stiffeners on the part of the specified section have a reduced thickness (GOST 32885-2014 Interstate governmental standard "model coupler SA-3. Design and dimensions." Date of introduction 2015.06.01).

A technical problem that cannot be solved using well-known technical solutions is to not use the possibility of reducing the mass of the automatic coupler without deteriorating its strength parameters. According to calculations of the strength of the automatic coupling body, carried out for various design cases, including jerking and stretching, shock and compression, the shank walls between its end part and the automatic coupling body head do not belong to the zones subjected to the greatest stresses during automatic coupling operation. Based on the compliance with the requirements of regulatory documents on permissible strength values, the shank walls can be made with a decrease in thickness in comparison with the known designs of automatic couplings.

The technical result of the utility model is to reduce the mass and metal consumption of the body of the automatic coupler.

This technical result is achieved by the fact that in an automatic coupler made in the form of a hollow body, which consists of a head part and a shank having a rectangular cross section and internal stiffeners extending from the end of the shank with a transition to the head part of the automatic body made on the walls of the shank, having areas on the inner surfaces with a thickness less than the wall thickness outside these areas, it is proposed that the shank walls in areas with a smaller thickness be performed with a decrease thicknesses along the length of these sections.

In the particular case of the execution of the wall of the shank in areas of lesser thickness made with a uniform decrease in thickness.

In the particular case of the execution of the wall of the shank in areas of lesser thickness, they are made with decreasing thickness in the direction to the head of the body of the automatic coupler, or in the direction to the end of the shank.

In the particular case of execution, the smallest wall thickness of the shank in areas with a smaller thickness is at least half the size of the largest wall thickness in these sections.

A useful model is presented in the drawings, where: 1 - automatic coupler body with decreasing shank wall thickness in the direction of the head part of the automatic coupler body, or in the direction of the end part, a longitudinal section; in FIG. 2 is a section AA in FIG. one; in FIG. 3 is a section BB in FIG. one; in FIG. 4 - the hitch body with a decrease in the wall thickness of the shank in the direction of the end of the shank, a longitudinal section.

The automatic coupling body is a hollow casting consisting of a shank 1 and a head part 2 with an occipital surface 2.1 (Fig. 1, 4). A through hole 1.1 is made in the end part of the shank 1, intended for mounting a wedge of the traction clamp for connecting the coupler to the car frame. The shank 1 has a rectangular cross-section with rounded transition surfaces from walls 1.2 to walls 1.3 (Fig. 2, 3). Inside the shank 1 on the walls 1.2, longitudinal stiffening ribs 1.4 are made with a constant height and a length from the end of the shank 1 with a transition to the head part 2 of the automatic coupling body. Inside the shank 1 on the walls 1.3 in the transition zone to the side walls of the head part 2, longitudinal stiffeners 1.5 are also made. Between the hole 1.1 and the head part 2 there is a section L, on which the walls 1.2 from the side of the inner surface are made with a thickness less than the wall thickness 1.2 outside the section L. The wall thickness 1.2 in the section L, in turn, is made variable with a uniform decrease from the largest values s1 in section AA to the smallest value of s2 in section BB (Fig. 1), or in the opposite direction (Fig. 4).

An example implementation of a utility model.

The hitch body has a shank 1, the length of which, measured from the end surface of the end part to the occipital surface 2.1 of the head part 1, is 650 ± 5 mm. Section L from the end part of the shank 1 (Fig. 1) is positioned relative to the wall of the hole 1.1, located on the side of the head part 1, and is spaced from this wall in order to provide the required strength at a distance of at least 85 mm. On the part of the head part 2, the portion L is positioned relative to the occipital surface 2.1 and is separated from it in order to provide the required strength at a distance of at least 50 mm. The value s1 of the greatest wall thickness 1.2, corresponding to section AA, (Fig. 2) is 24 mm. The value s2 of the smallest wall thickness 1.2, corresponding to the cross section BB, which, according to the strength calculations, should not be less than ½ of the value s1 (Fig. 3) and is equal to 12 mm.

The presence in the shank of 1 section L with the stated parameters helps to reduce the mass and metal consumption of the body of the automatic coupler. A uniform change in wall thickness 1.2 allows you to smoothly distribute the voltage along the length of the corresponding section. The decrease in wall thickness 1.2 in section L from the position of ensuring strength is compensated, in addition to its positioning relative to the opening 1.1 and the occipital surface 2.1, by the presence of longitudinal ribs 1.4 on walls 1.2 made with a constant height and with a length exceeding the length of section L.

Using the hitch of the proposed design allows to reduce its weight and metal consumption while ensuring operational stresses, strength and dynamic qualities of the design of the coupler within the permissible values.

Claims (5)

1. The automatic vehicle body of a railway vehicle, consisting of a head part and a hollow shank made with a rectangular cross section and with internal stiffeners on the walls of the shank having internal sections with a smaller thickness relative to the wall thickness outside these sections, characterized in that the walls of the shank in sections with a smaller thickness are made with decreasing thickness along the length of these sections. 2. The body of the automatic coupler according to claim 1, characterized in that the walls of the shank in areas of lesser thickness are made with a uniform decrease in thickness. 3. The body of the automatic coupler according to claim 2, characterized in that the reduction of the wall thickness of the shank is made towards the head of the body of the automatic coupler. 4. The body of the automatic coupler according to claim 2, characterized in that the reduction of the wall thickness of the shank is made in the direction toward the end of the shank. 5. The body of the automatic coupler according to claim 1, characterized in that the smallest wall thickness of the shank in sections with a smaller thickness is at least half the size of the largest wall thickness in these sections.

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