FR2525982A1 - CONTINUOUSLY WEIGHTED POCKET WAGON - Google Patents

Abstract

POCKET WAGON INTENDED FOR TRANSPORTING CAST IRON AND EQUIPPED WITH AT LEAST ONE POCKET SUPPORT DEVICE AT EACH OF ITS ENDS. AT LEAST ONE OF THE SUPPORT DEVICES IS CONSTITUTED BY A VERTICAL PISTON CYLINDER 12 PRESENTING, IN RELATION TO ITS VERTICAL BODY 11, A CLEARANCE J SUFFICIENT TO ALLOW IT TO MAKE BALL MOVEMENTS, AND IT IS FURTHER EQUIPPED WITH A DEVICE 17 FOR MEASURING THE PRESSURE OF THE FLUID 15 CONTAINED IN THIS CYLINDER.

Description

The present invention relates to a pocket car intended for

  liquid iron, said pocket car being provided with a device

  tif continuous weighing of the cast iron.

  In a pocket wagon, the pocket on the one hand, the bogies on the other hand, must have relative to each other the possibility of any relative displacement of small amplitude.

  between the pocket and the bogies is usually done by ball joints.

  On the other hand, one of the main problems of highfurniture operators is to know what weight of cast iron is actually

in the pocket during casting.

  The facilities are such that the visibility in the pocket

  is extremely small because it is very difficult to see the level of

  cast iron line inside a horizontal cylinder through a hole

come out sparks and smoke.

  It is also interesting to be able not only to

  level while filling the pocket, but still

  follow its evolution during the emptying of the pocket once this one

came to the steel mill.

  The present invention makes it possible to solve these problems in a particularly simple manner. The pocket car of the invention is characterized in that at least one of the support devices of the pocket at each of its two ends is constructed so as to play simultaneously. Preferably, this device is constituted by a vertical piston piston cylinder having, relative to its vertical axis body, sufficient clearance to enable it to perform

  ball movements, said cylinder being equipped with a device for

  sure of the pressure of the fluid it contains.

  The invention will be better understood from the following description:

  an example embodiment, with reference to the accompanying drawings in which: FIG. 1 is a schematic longitudinal sectional view of a

  ends of the pocket car of the invention.

  Figure 2 is a view slon the direction F of Figure 1.

  FIG. 3 is a sectional view in the direction AA of the

figure 1.

  FIG. 4 is a sectional view along the direction aa of the

figure 3.

  Figure 5 is a variant of the ball of Figure 3.

  Referring firstly to all of Figures 1 and 2, the tip 2 of the pocket 1 is circled at its end of a bandage 3 worn

  by rollers 4 mounted journalled in an intermediate frame 5.

  This intermediate chassis rests on the frame 7 carried by the bogies 8 via a device 9, which will be described below and which

  simultaneously plays the role of ball and weighing device of the po-

  In conventional manner, for example, stops 6 limit the pos-

  tipping possibilities of the pocket 1 with respect to the frame 7.

  The ball 9 of the invention will now be described with reference

Figures 3 and 4.

  The chassis 7 carries, by means of friction pads 10, a vertical body of the cylinder 11 of low height in which slides

  a vertical piston 12 fitted into the intermediate frame 5

  the integrity is ensured by a seal 13 held by a flange 14, and the piston

  your 12 presents in relation to the body He a game j of the order of a millimeter

  allowing him to perform patella movements.

  In order to guarantee a good seal between the piston 12 and

  the body 11, without the need for a gasket 13 of im-

  the fluid filling the cylinder is advantageously constituted by a grease produced for example by the following mixture, carried out hot in a water bath of 200 parts by weight of calcium soap grease, parts by weight of graphite having a particle size of the micron order,

  parts by weight of sodium tri-stearate.

  According to another aspect of the invention, moreover,

  line 16 connects the inner space of the cylinder containing the grease 15 to a -

  device 17 for measuring the pressure in this space The device 17 is a pressure sensor that can be either directly displayed or

  connected to a traditional information processing chain.

  As seen in the drawings, the jack of the invention is also equipped with four connecting rods 18 which connect, via ball joints (19, 20) and shoulder pins (21, 22), the piston 12 to the body 11, these rods being horizontal and having the role of maintaining the piston 12 and the body 11 rigorously coaxial, which avoids the masting of the inner wall of the body it and prevents the friction of 12 in Il ce

  which improves the accuracy of weight measurements.

  FIG. 5 represents a variant of the ball joint of FIG. 3 in which the connecting rod device 18 is replaced by a ball joint 23 connecting the piston 12 to the body 11, the axial parts thereof being respectively formed in female and male form as shown in the drawing The space containing the grease 15 is then constituted of two

  parts separated by the ball 23 and connected by a pipe 24.

Claims (4)

  A pocket car for transporting molten iron, provided with at least one device (9) for supporting the pocket (1) at each of these two ends, characterized in that at least one of said devices is constructed in order to simultaneously play the role of ball and weighing device from the pocket.   2. pocket wagon according to claim 1, characterized in that said device is constituted by a jack (9) vertical piston (12) having, relative to its vertical body (11) a clearance (j) sufficient to allow it to perform patella movements, and in that it is equipped with a device (17) for measuring the pressure   fluid (15) contained in this cylinder.   Pocket car according to Claim 2, characterized in that the piston (12) of the cylinder (9) is connected to its body (11).   by articulated rods (18) placed so as to hold said piston   tone (12) and said body (11) in a coaxial position.   Pocket car according to Claim 2, characterized in that the piston (12) of the cylinder (9) is connected to its body (11). by an axial ball joint (23).