RU2480363C1 - Body lateral support at bogie - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: body lateral support comprises top case 1 attached to car body frame 2 and bottom case 3 with bearer 4. Said bearer is composed of a plate secured to bogie bolster 5 that stays in contact with working surface of bottom case strap 7. Bottom case is coupled by torsion lever 8 with car body frame to press bottom case with strap to aforesaid bearer. One end of torsion lever is articulated with bottom case while its opposite end is secured via plain bearings 10 to body frame. Clearance of provided between bottom case nonworking surface 11 and top case to allow elastic interaction between body with thrust bearing 12 of bogie bolster.

EFFECT: stable operation of support, higher safety.

2 dwg

Description

The invention relates to railway transport and relates to devices for connecting a trolley to the body of freight cars, in particular side supports.

Known lateral support of the wagon body on the trolley, comprising a housing mounted through an elastic element on the trolley's pressure beam, the housing interacting with the working surface with a plate mounted on the body. As an elastic element used coil springs, and then polyurethane elements [1].

The disadvantages of the known lateral support are that, due to the limited pod space between the trolley and the body, coil springs have a limited number of turns and a height, which makes it impossible to obtain stable stiffness characteristics during manufacture, and due to the high tension, to provide the necessary resource.

When using polyurethane at positive ambient temperatures and a short service life, its stiffness characteristics are in the recommended range. However, at low temperatures, the rigidity of polyurethane increases by 1.5-4 times. During operation, there is a residual deformation of the polyurethane, which also significantly changes the characteristics of the side support, and therefore worsens the dynamic driving performance of the car.

Monitoring changes in the characteristics of the side support (the magnitude of the initial compression force of the elastic element) is possible only when lifting the body on jacks, which increases the complexity of servicing cars.

Also known is the side support of a car body on a carriage adopted for the prototype, comprising an upper body mounted on a car body frame and having a flat working surface in contact with a lower body mounted on a carriage including rollers. The lower case is installed in the nadressornoj beam and is supported through the elastic elements on the side frame of the trolley. The working surface of the lower case is made flat in the form of a side bearing with a friction lining. The flat working surface of the upper case is made in the form of a side bearing. Along the edges of the upper case, a flat working surface is conjugated with its inclined surfaces. The upper parts of the rollers are located above the working surface of the side housing of the lower housing. Gaps are made between the upper parts of the rollers and the inclined surface of the upper case. The lower case includes a friction damper of wedges pressed against the cylindrical surface of the housing guide slot. Inside the wedges there is a pressure element resting on them through flat supporting surfaces in the form of a pyramid. A housing cover interacting with the upper housing [2] is supported on the pressure element.

A disadvantage of the known lateral support is that control over changes in the characteristics during operation of the lateral support, including due to wear of the working surface of the housing, must be performed in the depot when lifting the car on jacks, which causes additional laboriousness in servicing the cars. In addition, due to wear of the working surfaces of the friction damper during operation, a stable power characteristic of the side support of the body is not provided, which can lead to a decrease in traffic safety.

The technical result of the present invention is the creation of stable power characteristics of the side support, as well as the ability to control the characteristics of the side side by car inspectors at the stations, which will increase traffic safety and will reduce labor costs and reduce the cost of work, since the carriage does not need to be lifted on jacks.

The indicated technical result is achieved in that the side support of the car body on a carriage containing an upper body fixed to the car body frame and a lower body pivotally connected to a torsion lever mounted on the body interacts with its working surface in the form of a lining made with the form of a plate and fixed on a nadressornoj beam.

Figure 1 shows a side view of the installation of the side support housing between the trolley and the body; figure 2 shows a perspective view of the fastening of the torsion bar with the lower housing of the side supports on the car body.

The side support of the wagon body on the trolley (FIGS. 1, 2) comprises an upper casing 1 fixed to the frame of the car body 2 and a lower casing 3 with side 4, while the slider 4 is made in the form of a plate fixed to the pressure bar 5 of the trolley 6, in contact with the working surface of the lining 7 of the lower casing 3. The lower casing 3 is connected by a lever 8 of the torsion 9 to the frame of the body 2 of the car for pressing the lower casing 3 with the lining 7 to the slide 4, and one end of the lever 8 of the torsion 9 is pivotally connected to the lower casing 3, and the other end of the lever 8 of torsion 9 through under ipniki slip 10 is fixed on the frame body 2. Between the trailing plane 11 of the lower casing 3 and the upper casing 1 is formed to provide clearance δ of the elastic body 2 interaction with thrust bearing 12 bogie bolster 5 6.

Side support works as follows.

When the car moves along straight sections of the track, a damping moment preventing the wagons 6 from wagging relative to the body 2 is created due to friction between the working surfaces of the lining 7 of the lower body 3 and side bearing 5, the optimal value of which is set by pressing the lower body 3 by torsion 9 through the lever 8. Under the action the outstanding forces in the curved sections of the track and the lateral forces when the carts 6 waggle in the straight sections of the track, side rolling of the body 2 occurs on the thrust bearing 12 of the cart 6, which is absorbed by the side supports within the clearance δ.

With the known rigidity of the torsion 9, the magnitude of the initial force of the lower body 3 to the slide 4 is determined by the angle α of the lever 8 to the horizontal. Since the rigidity of the torsion bar 9 is stable, not subject to permanent deformation during the long term of operation, and is not sensitive to temperature changes, the elastic interaction between the body 2 and the pressure beam 5 of the trolley 6 will be constant. With the wear of the working surface of the side bearing 4, the gap δ will change (increase), which is controlled visually and using a template. If the tolerance for increasing the gap δ is exceeded, installation of spacer plates on the upper case 1 is required, or replacement in the depot sideways 4.

Thanks to this design, a stable power characteristic of the side support is ensured - the initial elastic force of the interaction of the lower case of the side support with the trolley. In addition, visually and with the help of a template (probe), the car inspector monitors the gap specified during the manufacture of the car between the lower and upper bodies of the side support, which ensures elastic interaction between the body and the nadressornoy carriage beam during side rolling of the car.

INFORMATION SOURCES

1. Efimov V.P., Pranov A.A. “The modernization of the 18-100 trolley is an effective way to improve train safety.” The journal "Heavy Engineering No. 12, 2003, pp. 6-9."

2. RU, patent No. 2305643 C1, cl. B61F 5/14, 2007

Claims (1)

Lateral support of a car body on a trolley containing an upper body fixed to a car body frame and a lower case with a side rail, characterized in that the slider is made in the form of a plate mounted on a trolley nadressornoy beam in contact with the working surface of the lower body lining, the lower case is connected by a lever a torsion bar with a car body frame for pressing the lower case with an overlay to the slider, with one end of the torsion lever pivotally connected to the lower case, and the other end the torsion lever through the bearings The nylon is fixed to the body frame, a gap is made between the non-working plane of the lower body and the upper body to ensure elastic interaction of the body with the thrust bearing of the trolley’s overpressure beam.

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