RU154626U1 - RAILWAY TROLLEY CURRENT DEVICE - Google Patents

Abstract

The current-collecting device of a railway carriage trolley containing a spring strut with a fifth, spring suspension, side frames supported through adapters of wheel axleboxes through shock absorbers from elastomer, characterized in that each of the elastomer shock absorbers contains two conductive metal elements for contacting the side frame and axle box, each of which contains a U-shaped base, at the ends of which the upper and lower contact pads are made, and the upper contact pad is in contact with the side frame, and the lower contact pad is in contact with the axle box.

Description

The invention relates to rail vehicles and relates to structural elements of railway carriage trolleys, in particular, their axle boxes providing electrical conductivity.

When the train moves along the railroad tracks, an accumulation of static electric charge occurs in the design of the cars. The accumulation of static charge can cause the appearance of ozone (spark) breakdowns, which can lead to the formation of cracks in the components of railway carriage trolleys made of elastomers and can negatively affect the surface cleanliness of the working part of axlebox bearings and, as a result, the temperature operating mode and overall performance axle boxes. In this regard, in the design of railway carriage bogies, devices should be provided for the removal (removal) of static electricity.

In most operated railway carriage bogies, static charge is removed by grounding shunts, which are stranded copper wire, braided or twisted, without insulation, connected by two bolts. So, it is known that the conductive grounding connection of the axle box with the frame of a three-element trolley for freight cars (Trolley for a new generation freight car with an axial load of 245 kN. - Heavy Engineering, 2006, No. 8, Fig. 1, p. 45), containing a spring bar with the fifth, spring suspension, side frames. Side frames are supported through shock absorbers made of elastomer on adapters of axle boxes. The busbar is bolted to the axle box adapter and side frame. A disadvantage of the analogue is the external bolt fastening of the current-carrying bus with a box and frame. At the same time, in the process of direct operation of a railway carriage, there is a possibility of violation of the integrity of the connection of the current-carrying bus with the axle box and frame, and as a result, the absence of static electricity from the railway carriage structure.

The closest technical solution (prototype) is an electrically conductive ground connection of the axle box with the frame of the truck of a freight car (RU 2329174, B61F 15/28, published July 20, 2008), containing a sprung beam with a fifth, spring suspension, side frames supported through elastomer shock absorbers on adapters for axle boxes In each shock absorber, an opening is made of elastomer, into which an elastic conductive elastomer is inserted for contacting the side frame and axle box.

The disadvantage of the prototype is that the elastic conductive elastomer for contacting the side frame and axle box is made of elastic material, which, when the bogie of the railway carriage is operated at extremely low ambient temperatures, hardens and loses its elastic properties, and its conductive properties decrease. In addition, the elastic conductive elastomer is higher in height in the initial state than the shock absorber, and during direct operation of the freight wagon trolley, it experiences compression against the supporting metal surfaces of the side frame and axle box of the trolley, as a result of which the intensity of abrasive wear of the surfaces of the elastic conductive elastomer in contact with supporting metal surfaces of the side frame and axle boxes of the trolley. As a result of the elastic conductive elastomer being in a compression state for a long period of operation of a freight wagon, residual deformation of the elastic conductive elastomer, i.e., its shrinkage, may occur. Another disadvantage of the prototype is that the discharge of static electricity through each axle box is limited to only one elastic conductive elastomer installed in the central part of the corresponding shock absorber. All these shortcomings as a whole negatively affect the efficiency and constancy of the discharge of static electricity from the design of the railway carriage trolley.

The technical result of the proposed utility model is the creation of a current-collecting device for a railway carriage trolley, which provides a constant and efficient discharge of static electricity from the railway carriage structure.

The technical result is achieved by the fact that the current-collecting device of the railway carriage trolley contains a spring bar with a fifth, spring suspension, a side frame, supported through adapters from elastomer on adapters of axle boxes of wheelsets. Moreover, each of the shock absorbers made of elastomer contains two conductive metal elements for contacting the side frame and axle boxes, each of which contains a U-shaped base, at the ends of which there are upper and lower contact pads, the upper contact pad in contact with the side frame and the lower contact the platform is in contact with the axle box.

The described technical solution is presented in the drawings:

FIG. 1 - General view of the truck wagon

FIG. 2 - The shock absorber from the elastomer assembly (in the context)

FIG. 3 - Side frame mounted on the axle box through the shock absorber from elastomer (in the context),

where the following notation is given:

1 - nadressornoy beam with a fifth

2 - spring suspension

3 - side frame

4 - shock absorber from elastomer

5 - adapter

6 - axle box

7 - wheelset

8 - conductive metal element

9 - base

10 - upper contact pad

11 - lower contact pad

12 - rails.

The downstream device of the freight car truck (Fig. 1) contains a spring bar with a fifth 1, spring suspension 2, side frames 3, shock absorbers 4 made of elastomer. The side frames 3 are supported through shock absorbers 4 of an elastomer, for example, polyurethane, on adapters 5 of the axle box 6 of the wheelset 7 (Fig. 2). Each shock absorber 4 of the elastomer contains two conductive metal elements 8 made of structural steel, for example, 09G2S according to GOST 19281-89. Each conductive metal element 8 contains a U-shaped base 9, at the ends of which there are upper and lower contact pads 10 and 11, respectively.

The current-collecting device of a railway carriage truck is as follows. When a railway carriage (not shown) moves along railway tracks, an electric charge accumulates in its structure, which is transmitted through a spring beam with a fifth 1 made of metal through spring suspension 2 to the side frame 3 of the trolley. Due to the elasticity of the shock absorbers 4 from the elastomer, the upper and lower contact pads 10 and 11, respectively, under the gravity of the body of the railway carriage, are tightly pressed against the supporting surfaces of the side frames 3 and axle boxes 6, as a result of which the lateral frames 3, conductive metal elements 8 and axle boxes 6 are in constant contact ( Fig. 3). From the side frames 3 through the upper contact pads 10, an electric charge (current) is transmitted to the bases 9, and then from the bases 9 is transmitted through the lower contact pads 11 to the axle boxes 6 of the wheel pairs 7 and then to the rails 12. Thus, between the side frames 3, The upper contact pads 10, the bases 9, the lower contact pads 11, the axle boxes 6 of the wheel pairs 7 form electrically conductive bonds, which ensures the passage (transmission) of current from the side frames 3 of the carriage of the railway carriage to the axle boxes 6 of the wheel sets 7 and further to the rails 12.

Thus, the claimed technical result, namely, the creation of a current-removing device of a railway carriage trolley, which provides a constant and efficient removal of static electricity from the railway carriage structure, is achieved due to the fact that in the current-carrying device of a railway carriage trolley containing a spring bar with a fifth, spring suspension , side frames resting on elastomer box adapters through shock absorbers made of elastomer, each of the shock absorbers made of elastomer contains va conductive metal elements. Moreover, each of the conductive metal elements contains a U-shaped base, at the ends of which the upper and lower contact pads are made, through which the side frame, the conductive metal element and the axle box pair are contacted, the upper contact area of the conductive metal element in contact with the side frame, and the lower contact pad of the conductive metal element is with the axle box of the wheelset of the railway carriage trolley.

Due to the fact that the conductive elements designed to ensure constant contact of the side frames and axleboxes are made of metal, the conductive properties of which are improved during operation at extremely low ambient temperatures, a constant and effective discharge of static electricity is provided regardless of the ambient temperature. In addition, the proposed design of down conductors of the side frames and axleboxes of wheel sets is characterized by increased resistance to abrasion.

Thanks to the use of several conductive metal elements in each elastomer adapter, the conduction of static electricity from the structure of the railway carriage is ensured.

Due to the fact that each conductive metal element contains a U-shaped base, which, as a part of a shock absorber from an elastomer, “wraps” its middle part in the longitudinal direction, the elasticity of each conductive metal element is ensured when it is compressed together with the corresponding shock absorber from an elastomer under the weight of a railway car body .

The use of the proposed utility model in the design of railway carriage trolleys will make it possible to organize a constant and reliable electrical conductive connection of the railway carriage through wheelsets with rails, while excluding axle box bearings and preventing their electrocorrosion due to ozone (spark) breakdowns, ensuring the axle box protection from discharges electrostatic in nature and premature wear.

Claims (1)

The current-collecting device of a railway carriage trolley containing a spring strut with a fifth, spring suspension, side frames supported through adapters of wheel axleboxes through shock absorbers from elastomer, characterized in that each of the elastomer shock absorbers contains two conductive metal elements for contacting the side frame and axle box, each of which contains a U-shaped base, at the ends of which the upper and lower contact pads are made, and the upper contact pad is in contact with the side frame, and the lower contact pad is in contact with the axle box.

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