RU180483U1 - Hatch cover bracket - Google Patents

Abstract

The invention relates to the field of mechanical engineering, in particular to devices for fastening on a vertical plane of the parts of the hatches of covered rail cars that protrude or extend horizontally, and other mobile vehicles equipped with locking units. The arm of the gondola cover is a cast product, narrowed in the middle part, the corners of the contour of which are rounded. The radius of the conjugation of the angle (intersecting straight lines) of the extended part of the outer edge (closest to the corner of the hatch cover) is 100-150 mm, the radius of conjugation of the angle of the narrowed part of the outer edge of the bracket is 45-55 mm, the radius of the transition from the inner face to the protruding beyond the front beam of the hatch the zone is 45-55 mm, the contour of the cross section of the bracket in the transverse direction has rounded corners, the radius of which is 3-12 mm, the inner face of the bracket is made at an angle of 5-10 ° relative to the base, the radius of the transition from the horizontal part Cored oil faces to the vertical portion is 55-65 mm.Tehnichesky result is to increase the strength characteristics of the bracket that will improve the safety of transported goods.

Description

The utility model relates to the field of engineering, in particular to devices for mounting on a vertical plane of the protruding or horizontally extended parts of the hatches of open wagons and covered railway wagons.

Known gondola car model 12-754 (album-directory "Freight wagons of 1520 mm gauge railroads", PKB CV, 002I-2010), containing two biaxial bogies, an all-metal body with fourteen hatches in the floor, a frame, a pivot beam, and a spinal beam. Manhole covers are made of corrugated metal sheets reinforced with stiffeners. Manhole covers are pivotally attached to the spinal beam using three loops, the lock of the manhole cover consists of a cap, sector and strap.

The disadvantage of the brackets used in the hatch of the model 12-754 gondola car hatch is their low strength characteristics - the bracket contour is made of variable geometry containing angles, and the gondola car hatch has a mass of more than 150 kg, in addition to the mass of the load, as a result of which stresses are concentrated in the corners during operation from the influence of perceived loads, the hatch cover brackets are deformed, kinks appear, weakening of the rivets of the brackets and hinges is observed.

Known hatch of a gondola car (RF patent for utility model No. 130274, IPC B61D 17/00, B61D 11/00, 07/20/2013), adopted as a prototype, consisting of an all-metal frame, sheathing (sheet of the hatch cover), loops for fixing manhole covers on the spinal beam of a gondola car, locking brackets for fixing the manhole cover in the closed position, brackets for fixing the shrouds, and fixing elements for one or two torsion bars. The hatch frame includes a system of longitudinal and transverse beams. The locking brackets are angles and are installed at an angle to the axis of symmetry of the cover on the lower surfaces of the front and transverse beams with support on the connection node, including the reinforcing scarf. In order to be able to install a manhole cover on a 0-VM gondola, the locking brackets have a smaller overhang beyond the front edge of the cover due to the truncated end forming a surface parallel to the front edge of the cover.

The disadvantage of the brackets used in this manhole cover is the low strength characteristics with irrational cross-section - the contour of the bracket is made of variable geometry, containing angles where stresses from the effects of perceived loads are concentrated, as a result of which the brackets are deformed during operation, breaks appear in places of stress localization, weakening is observed mounting rivets and hinges, it is possible to break the bracket.

The above factors reduce the safety of the transported goods, there is a risk of loss of bulk cargo due to deformation of the bracket and violation of the tight fit of the hatch cover sheet to the body elements.

The technical problem to be solved is the low strength characteristics of the used brackets with irrational cross-section, as a result of which the brackets are deformed during operation, stress concentration is observed at the points of geometry changes, kinks appear, the rivets and hinges are weakened, as a result of which the tight fit of the hatch cover sheet to the body elements is broken , which reduces the safety of transported goods.

The technical result consists in increasing the reliability of the bracket by selecting the optimal section of the bracket using mates.

The specified technical result is achieved in that the bracket for the hatch of a gondola car is a molded product, the contour narrowed in the middle part is distinguished by the fact that its corners are rounded, namely, the mating radius of the intersecting straight lines of the angle of the extended part of the outer edge closest to the corner of the hatch is 100-150 mm, the radius radius of the narrowed part of the outer edge of the bracket is 45-55 mm, the radius of the transition from the inner edge to the zone protruding beyond the front beam of the hatch cover is 45-55 mm, of the bracket in the transverse direction has rounded corners, the radius of which is 3-12 mm, the inner face of the bracket is made at an angle of 5-10 ° relative to the base, the radius of the transition from the horizontal part of the inner face to the vertical part is 55-65 mm.

The hatch bracket is made of a molded product, a smooth transition between the faces provides the parts with greater reliability than increasing the thickness of the product, and in cases where it is necessary to use mates of massive sections with thin sections, smooth transitions between them are provided. The thicknesses of two mating walls located in parallel differ by no more than four times. The length of the inclined part must be at least four values of the difference in thickness of the mating walls. The radius of the mating is chosen so that to obtain a smooth transition to prevent local accumulation of metal, so the variety of radii of mates is extremely reduced in the wagon bracket. The radius is selected within 1 / 5-1 / 3 of the arithmetic average thickness of the mating walls, unless a different radius is required for the purpose and design of the part. When the faces are conjugated at an angle due to the meeting of the heat flux lines in the inner corner of the joint, a hot knot is formed that slows down cooling, this connection makes it difficult to fill the mold with metal and prevents shrinkage, in addition, the use of walls in castings with uneven thickness, accumulation of metal in separate sections and sharp transitions from a large section to a small one affects the quality of casting. Compliance with smooth transitions is the main requirement for the design of a cast part, therefore, the maximum transition radii allowed by the configuration of the part are used in the bracket.

Thus, a technical result is achieved, which consists in increasing the strength characteristics of the bracket.

The proposed utility model is illustrated by graphic material. Figure 1 shows a General view of the bracket of the hatch of the gondola car, Figure 2 shows the contour of the section of the bracket, Figure 3 shows a view of the bracket from the side of its inner face.

The bracket for the hatch of the gondola 1 (Fig. 1) is a molded product, the corners of which are rounded, namely, the radius of conjugation of the angle (intersecting straight lines) of the extended part of the outer edge 2 (closest to the corner of the cover of the hatch) is 100-150 mm, the radius of conjugation of the angle is narrowed part of the outer edge 2 of the bracket 1 is 45-55 mm, the radius of the transition from the inner edge 4 to the zone 3 protruding beyond the front beam of the hatch cover is 45-55 mm, the contour of section AA of the bracket 1 (Fig. 2) is rounded in the transverse direction angles whose radius is 3-12 mm, the inner bracket face 4 is formed at an angle of 5-10 ° with respect to the base 5 (FIG. 3), the radius of the transition from the horizontal portion 4 to the inner edge of the vertical portion 6 is 55-65 mm.

Claims (2)

1. The hatch cover bracket, which is a product of variable cross section, having a narrowing in the middle part, characterized in that the radius of the intersecting straight mates of the angle of the extended part of the outer edge closest to the corner of the hatch is 100-150 mm, the radius of the mating angle of the narrowed part of the outer the face of the bracket is 45-55 mm, the radius of the transition from the inner face to the zone protruding beyond the front beam of the hatch cover is 45-55 mm, the contour of the cross-section of the bracket in the transverse direction has rounded corners whose radius is yaet 3-12 mm, the inner face bracket provided at an angle 5-10 ° relative to the base, the radius of the transition from the horizontal portion to the inner edge of the vertical portion is 55-65 mm. 2. The hatch cover bracket according to claim 1, characterized in that the bracket is molded.

Images