RU126298U1 - TRUCK CAR - Google Patents

Abstract

A freight car truck consisting of wheelsets, axleboxes, side frames, sets of central spring suspension, brake linkage, a spring beam made of steel in the form of a beam of equal resistance to bending of a closed box section, having a thrust bearing and bearing pads made for fixing side side bearings characterized in that the support pads for installing removable lateral side bearings of the trolley’s sprung beam are located below the level of the plane of the thrust bearing surface by a size yayuschy produce removable installation side Slides constant contact and provides interchangeability with carriage bogies wagons equipped rigid Slides intermittent contact.

Description

The utility model relates to railway transport and relates to the running gear of freight cars.

A well-known biaxial cart with cast side frames of the TsNII-KhZ type 18-100 type (Pastukhov I.F., Lukin V.V., Zhukov N.I. Wagons / Edited by V.V. Lukin. - Transport, 280 p. )

The trolley consists of two wheelsets, four axle boxes, two molded side frames, two sets of central spring suspension and a molded sprung beam and brake linkage. Trolley brake - shoe with one-sided pressing of blocks. The connection of the frame with the axleboxes is direct jaw, the body rests on the trolley through the thrust bearing of the nadresornoy beam, and when tilting the body - additionally through the side bearings. The cart allows an axial load of up to 230 kN (23.5 tf) at a speed of 120 km / h and 235 kN (24 tf) at a speed of 100 km / h.

The frame consists of horizontal and inclined belts, as well as columns. In the middle of the frame there is an opening for the central spring suspension, and axle boxes at the ends. Cross sections of inclined belts and vertical columns of a trough-shaped form. The horizontal section of the lower zone has a closed box section. On the sides of the middle aperture there are guides that limit the lateral movements of the friction wedges, and at the bottom there is a supporting surface with bonnets and collars for placement and fixing of the spring springs. On the inside of this surface there are shelves that are supports for the tips and hold the triangel in case of suspension breakage. At the locations of the friction wedges, one bar is riveted in each column of the frame. On the upper belt of the side frame there are brackets for attaching the brake shoe suspensions. Box openings have annular tides in the upper part, with which the frame rests on the axle boxes, and on the sides - jaws.

Five cones are cast on the inner side of the upper belt (from 1984) or the inner side of the inclined belt of the frame (until 1983), which are used to select the side frames when assembling the carts. Selection is made according to the number of cones left (uncut) corresponding to a certain size A between the outer jaws of the axle box openings. This ensures that the axles of the wheelset are parallel. Size A has six gradations: No. 0-No. 5. If all cones are felled, then the frame has a gradation of No. 0 with a size between the outer jaws of 2181 ± 1 mm, with a single uncut cone - a gradation of No. 1 with a size of 2183 ± 1 mm, etc., increasing by 2 mm.

The nadressornoj beam is cast from steel 20GL or 20G1FL in the form of a bar of equal resistance to bending of a closed box section. It has a thrust bearing, a shelf for fastening the bracket for the dead point of the lever linkage of the brake, supports for the side bearings, recesses (nests) for accommodating friction wedges, collars that limit the displacement of the internal springs of the spring set, and protrusions that hold the outer springs from displacement when the trolley moves.

The body Friday rests on the thrust bearing, through the centers of which the king pin passes. The support for the kingpin is the pallet, which is located under the thrust bearing in the middle of the nadressor beam. The king pin serves as the axis of rotation of the trolley relative to the body, and also transfers traction and braking forces from the trolley to the body and vice versa.

The lateral movements of the nadressornoj beam are absorbed by the transverse elasticity of the springs on which it rests. The trolley slider - the lateral support of the body of intermittent contact - consists of a support cast at the same time with a nadressornoy beam, a cap worn on a support, gaskets for adjusting the gaps between the sliders of the car frame and the trolley, a bolt that protects the cap from falling. The gap between the side bearings for the main types of four-axle cars should be in the range of 6-16 mm.

Spring suspension consists of two sets located in the spring openings of the left and right side frames. Each set includes five, six or seven double-row coil springs and two wedge friction vibration dampers. Each double-row spring consists of an outer and an inner spring having different windings — right and left, respectively. The number of double-row springs in the kit depends on the capacity of the car. Five springs are placed in carts, which are rolled up under the car bodies with a carrying capacity of up to 50 tons, six - up to 60 tons and seven - more than 60 tons. In this regard, the location of the springs in the kit will be different. The extreme side springs of the kit support wedges of vibration dampers. From the bottom, the wedges have annular protrusions that do not allow their displacement relative to the springs in the horizontal plane, and their upper part enters the guides of the nadressornoj beams. Wedges are cast from 20L steel. The springs are made of steel 55C2, and the friction plates are made of steel of grades 45, 30HGSA or 40X. The static deflection of the spring suspension from the container is 8 mm, from the gross mass - 46-50 mm. The coefficient of relative friction of the vibration damper is 0.08-0.10.

The trolley of this most popular model is still in operation on the railways. Moreover, until 2004, this trolley was actually the only one commercially available and was used as part of four- and eight-axle freight cars.

The use of lateral supports of intermittent contact limit the movement of the car body, but do not increase the stability of the movement of the car.

Since the introduction of the model 18-100 trolley into operation, its design has undergone a number of changes and upgrades. On the basis of successful modernization of the model 18-100 trolley, the specialists of FSUE "Uralvagonzavod" created a new model 18-578 trolley. Following him and at Promtractor-Wagon CJSC (Kanash), they put into production and certified a model 18-9771 trolley. The production of trolleys of foreign companies is carried out by Promtractor-Wagon CJSC and Titran-Express CJSC (Tikhvin). These enterprises are developing the production of trolleys of models 18-9836 (ASF) and 18-9810 ("Barber"), respectively. An example of the development of fundamentally new designs of running gears is the trolleys of models 18-9750 (NEC “Vagoni”), 18-4129 (OOO Sofia-Invest), GP-3 (OAO Ruzkhimmash). (The article "Improvement of the running gear of freight cars." Authors I.A. Kharybin, A.N. Orlova, A.V. Dodonov., Magazine "Wagons and Wagon Economy" No. 1 (17) 2009) and (Article " Improve the running gear of wagons. "Authors E.V. Afanasyev, A.V. Dodonov., Magazine" Wagons and wagon economy "No. 1 (21), 2010) On all the listed trolleys, elastic contact joints of constant contact of various designs and manufacturers are used (“A. Stucki”, “Miner”, LLC “Vagonmash”, FSUE “PO Uralvagonzavod”, etc.) The position of the bearing surface of the side bearing on the bodies of cars on such carts differ, which does not allow in practice in operation to drive under the bodies of such wagons trolleys with hard-side clamps (for example, models 18-100). That is, the trolleys are not interchangeable with the most massive trolleys operated on the 1520 gauge.

The result of a comprehensive modernization of the model 18-100 trolley of OAO NPK Uralvagonzavod was the model 18-578 trolley. This trolley allowed for minimal changes in design to achieve improved performance. It has been put into mass production and is operated as part of gondola cars produced by OAO NPK Uralvagonzavod (2004). The model 18-578 trolley used a number of design and technological solutions to increase the overhaul period of freight cars by mileage up to 500 thousand km and the warranty period of operation up to 4 years. The cart uses removable elastic-roller type side-bearings manufactured by OAO NPK Uralvagonzavod, cast-iron heat-strengthened friction wedges with urethane linings. In addition, the design provides protection for the main friction units. Among them are a wear-resistant bowl in the thrust bearing of the nadressornoj beam, wheels of high quality and hardness, cassette-type bearings. Spring suspension in this trolley is made of springs with less stiffness compared to trolley 18-100.

Cart model 18-9771 CJSC "Promtractor Wagon" was put to production and certified. (The article "Improvement of the running gear of freight cars." Authors I.A. Kharybin, A.N. Orlova, A.V. Dodonov., Magazine "Wagons and Wagon Economy" No. 1 (17) 2009) and (Article " Improve the running gear of wagons. "Authors EVVanafiev, A.V. Dodonov., Magazine" Wagons and wagon economy "No. 1 (21), 2010). We accept this cart as the closest analogue of a utility model. The truck of the model 18-9771 freight car consists of wheelsets, axle boxes, side frames, sets of central spring suspension, brake linkage, a spring beam made of steel in the form of a beam of equal resistance to bending of a closed box section, has a thrust bearing. The nadressornoj beam has supporting platforms for installing various types of side bearings, a shelf for attaching the dead center bracket of the lever linkage of the brake, recesses (sockets) for accommodating friction wedges, collars limit the displacement of the internal springs of the spring set, and the protrusions hold the external springs from displacement when the trolley moves. In the trolley model 18-9771 applied technical solutions similar to the trolley 18-578. The main difference between the trolley model 18-9771 from 18-578 was the ability to use various designs of elastic and elastic-roller side bearings of the world's leading manufacturers. It became possible to equip the trolleys with rigid side bearings (for pumping trolleys 18-9771 for wagons intended for operation on 18-100 trolleys). However, there is no possibility to drive under the bodies of wagons made on trolleys of model 18-9771 with lateral side bearings of constant contact, trolleys with rigid type side bearings (non-constant contact) without additional refinement.

The essence of the utility model is to create a freight wagon trolley, using which a freight wagon complies with the requirements for traffic stability by providing the possibility of using various elastic and elastic-roller bearings of the world's leading manufacturers while increasing its maintainability by ensuring interchangeability with the most popular bogies operated on 1520 gauges (e.g. models 18-100), i.e. it is possible to drive under the car bodies made under such carts with removable lateral side-bearings of constant contact, carts with rigid-type side-bearings (intermittent contact) without any further refinement.

List and brief description of the drawings:

Figure 1 - General view of the truck freight wagon;

Figure 2 - view of the trolley of a freight car with a slice along the nadressorny beam.

The truck of the freight car 1 (Fig. 1) consists of wheel sets 2, axle boxes 3, side frames 4, sets of central spring suspension 5, brake linkage 6, (Fig. 2) of a spring beam 7 made of steel in the form of a bar of equal resistance a bend of a closed box section having a thrust bearing 8. The bearing pads 9 for installing removable lateral side bearings of the trolley press beam are located below the level of the plane of the thrust bearing surface by size “A” which allows the installation of removable lateral side bearings constant contact and provides interchangeability of bogies with bogies of freight wagons equipped with rigid clamps of unstable contact.

When using the declared truck wagon, along with the fact that it is possible to use various elastic and elastic-roller side bearings of the world's leading manufacturers and the ability to equip the trolley with rigid side bearings, it became possible to drive and (or) repair wagons roll under the bodies of wagons made under such carts with removable lateral side-bearings of constant contact, carts with rigid-type side-bearings (intermittent contact) without their additional refinement. That is, the bogies are interchangeable with the most popular bogies operated on the 1520 gauge (models 18-100).

The technical result achieved by the utility model is to ensure the stability of the movement of the car while increasing the maintainability of the cars.

According to this technical decision, PJSC “KVSZ” developed technical documentation for use in trolleys of freight cars of its own design.

Claims (1)

A freight car truck consisting of wheelsets, axleboxes, side frames, sets of central spring suspension, brake linkage, a sprung beam made of steel in the form of a beam of equal resistance to bending of a closed box section, having a thrust bearing and supporting platforms made for attaching side side bearings characterized in that the support pads for installing removable lateral side bearings of the trolley’s sprung beam are located below the level of the plane of the thrust bearing surface by a size yayuschy produce removable installation side Slides constant contact and provides interchangeability with carriage bogies wagons equipped rigid Slides intermittent contact.

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