SU932264A1 - Device for measuring weight of metal in ladle - Google Patents

Description

(54) DEVICE FOR MEASURING THE WEIGHT OF METAL IN A BUCKET

one

The invention relates to weighing technology and can be used in metallurgical, precision, B particularly in the continuous casting of metal.

Known devices containing a bucket on the lifting-swivel stand, in which the weight sensors are built into the rods of hydraulic cylinders mounted on the traverse of the stand GP

The drawback of the device is the unreliability of the device and the measurement of weight.

The closest in technical essence to the present invention is a ycTpoiicTBO containing the traverse of dp buckets associated with a hydraulic cylinder mounted on a hinged housing bracket and load cells t2.

However, in the device, the reliability of measuring the weight of the metal is low, which is associated with the location of the load cells and, directly,

faith. In places of the bucket (bucket, this leads to damage to them during its installation, and because of the occurrence of h. 1x, shock loads.

The purpose of the invention is to improve reliability.

The goal is achieved by the fact that the device is equipped with a balance bar pivotally mounted on the bracket of the rotary body, on the opposite ends of which are weight sensors, and the traverse is equipped with jacks, the distance between which is horizontal and equal to the distance

IS weight measuring sensors, and vertically, between the lower bearing surfaces of the jacks and the upper bearing surfaces of the weighing sensors, the stroke

X lifting bucket and less hydraulic cylinder stroke.

Claims (2)

FIG. 1 shows the device, a general view; in fig. 2 is a section A-A 3 iia of FIG. 1, in FIG. 3 - the schematic diagram of the device. The device contains traverse I, iia which becomes bucket 2. Each traverse sharirio is suspended on levers 3 and 4 that form a parallelogram with a noBopOTiaiM enclosure 5 map. The rotary enclosure 5 is fixed on the revolving column 6 mounted on podshrplikiah in the support casing 7. The lifting hoists of 8 lifting heads are fitted with 1, 3, 4, 4, 3, 4, 4, 3, 4, 4, 4, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 4, 4, 4, 3, 4, 3, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 4, 3, 4 are mounted on pods, are mounted on the supporting frame. On each of these brackets the balance bar 10 is mounted on the roller 9, the weight sensors 11 are mounted on the opposite ends of the roller. The balance bar 10 carrying the sensors 11 is located between the hydraulic axis and the axis of rotation of the wall. The traverse is provided with two jacks 12, the distance between which horizontally is equal to the horizontal distance of the weight measuring i-iH sensors 1 1 installed on the balance bar 10. In the upper position, the traverse 1 with the hydraulic cylinder 8 extended and the distance between the vertical support surfaces of the cylinder 8 12 and the upper bearing surfaces of the load cells 11 are equal to the size of the lifting and lowering of the buckets and less than the magnitude of the working stroke of the hydraulic cylinder h. The device works as follows. The steel teeming bucket 2 is installed on yoke 1 in its raised position, i.e. when the hydraulic cylinder 8 is extended. The vertical force of impact when installing the bucket is perceived directly through the plunger of the hydraulic cylinder by the working volume of the fluid in it, which provides a certain damping. In this case, the distance between the support faces of the jacks of the crosshead and the load cells is H, and the possible full travel of the hydraulic cylinder is h. When the bucket is lowered into the hydrocylinic, the damping is provided to the train using a special throttle device (not shown). Due to this, in the lower position of the traverse, with their supporting faces of the pl, but it comes in contact with the weighing sensors, and then the traverse along with the bucket 2 is transmitted to sensors 11, while the power reserve (h-H) remains relying on the uniqueness of the meaning obtaining a certainty of reaction P on the sensors. Starting from the ratio of the shoulders, the force P on the sensors 11 without taking into account the weight of the traverse p is aI-4. 1 / x) where / X. - coefficient of friction in bearings of earrings. Since 1, 1 - values are constant, then P is proportional to Q, and, therefore, characterizes the change in the weight of the metal in the ladle. The signal removed from the appropriately trimmed weight sensors 11 is thus the weight of the metal in the ladle 2. After the conversion in the secondary equipment, this indication is given in the form of information on the light board and is fed to the process control systems. Claims An apparatus for measuring the weight of a metal in a ladle, containing the traverse for ladles, associated with a hydraulic cylinder mounted on a hinged arm with load cells, is designed so that, in order to improve the reliability of measurement, it is equipped with a balance bar, hinged on the bracket of the rotary body, on the anti-polish ends of which weight sensors are located, with the yoke equipped with jacks, the distance between which is horizontally equal to the distance Waiting for load cells, and vertically, between the lower bearing surfaces of the jacks and the upper bearing surfaces of the load cells, the magnitude of the bucket lift and less than the stroke of the hydraulic cylinder. Sources of information taken into account in the examination 1..Demag construction, working in KKTs-2 Novo-Lipetsk Metallurgical Plant, 2, UZTM Design, hell. № 5601157 IN (prototype). 1  412