SU366991A1 - In P T B - Google Patents

Description

The invention relates to a ycTpoflcTBHiM for measuring the pressure of a pantograph of an electric rolling stock on a contact wire and is intended for use on railways.

Devices for measuring pressure pantographs on a contact wire are known, comprising pressure sensors, measuring springs, a measuring contact rod mounted on a bracket and a frame.

The disadvantage of all self-recording dynamometers is that the removal of static characteristics is performed manually by the use of mobile electric rolling stock.

The known devices make it possible to measure the pressure on the skid of a pantograph while the electric rolling stock is moving, however each pantograph must be equipped with this device.

The aim of the invention is to ensure the accuracy, reliability and automation of pressure measurement during the movement of electric rolling stock under current along depot tracks or through the point of technical inspection where the speeds do not exceed 5-10 km / h.

For this, in the proposed device, an equilibrated frame of the fixing type is used, divided by insulators into two parts. The part that is not under tension is pivotally attached to the bracket of the con2 support

tact network. A measuring spring and a displacement amount sensor are installed between the bracket and the frame. The tensioned part has a contact runner that is not mechanically connected to the contact wire.

FIG. 1 shows a device, a longitudinal section; in fig. 2 - the same, top view; in fig. 3 is a view along arrow A in FIG. 2

On the support of the contact network 1, a welded bracket 2 is fastened on which a round steel shaft 3 is fastened with ball bearings 4. To the ends of the shaft by means of shaped washers 5 and nuts through insulators simple clamps 6 are fixed. Shaped washers are attached to the shaft with dowels.

To the middle of the shaft in the opposite direction from the clamps welded console 7 of the channel. In the same place, perpendicular to the console, a steel plate 8 is welded to the shaft, which rests on the rod of the displacement sensor 9 fixed on the angle W welded to the bracket 2. To the ends of the clamps 6 is attached a contact track consisting of a channel / using steel plates 12, bent U-shaped, and string clamps 13, a segment of contact wire 14 is fastened, having an oval shape in Ylan, and a semicircular cross section.

The device is mounted on the support of the contact network so that the working contact wire 15 is inside this semicircle 80-100 mm above the lower face of the contact runner and does not have a mechanical connection with the runner.

To stiffen the clips 6, they are stacked between each other by a length of pipe 16. The clips 6, the contact runner, the shaft 3 and the arm 7 form a frame that is supported in the working position by two link strings 17 attached to the outflow of a single seat that is not shown .

D / H: I balance the paiMy, and the end of the console 7 with the help of the rod 18 weighs the load 19. In addition, the measuring spring 20 is put on the rod / 8, abutting with one end at the console 7, and the other at the corner 21, which is welded to the bracket 2. A bar / 8 freely passes through the corner 21, thereby preventing rocking - ..

The described device operates as follows.

When the pantograph enters the device, the contact runner rises by 50-70 m under the action of the pressure of the current collector. In doing so, the spring 20 is compressed and prevents further lifting. Shaft 2 rotates.

and together with it the plate 8 is rotated at a certain angle, which acts on the displacement transducer.

Thus, Oi6pa30M, the angle of rotation of the plate 8, is proportional to the magnitude of the rise of the contact runner and, consequently, the pressure of the pantograph on the contact runner (or contact wire, which is the same). The signal from the displacement transducer is fed to a recording device, which records the pressure value. When the pantograph comes off the device, everything returns to its original position.

Subject invention

A device for measuring pressure of a pantograph, comprising pressure sensors, measuring springs, measuring contact

a skid mounted on a bracket and a frame, characterized in that, in order to increase the measurement accuracy at a given height of the skid and simplify the device, the frame is hinged on the bracket, made balanced and divided by insulators into two parts voltage, the measuring contact is fixed, and the other, grounded, measuring spring and pressure sensor.

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