RU22529U1 - STEEL FURNACE - Google Patents

Abstract

A steel furnace containing a casing, a fixed portal with a vault, a furnace tilt mechanism, characterized in that the furnace tilt mechanism is made in the form of a cable mechanism consisting of a rope, one end of which is fixed to the transverse beam of the fixed portal, the other to the winch drum.

Description

The proposed utility model relates to the metallurgical industry, namely to electric industrial furnaces, and can be used in metallurgy and for conducting high-temperature chemical reactions.

Known electric furnace / 1 /, containing a casing, a withdrawable portal with a vault, a tilt mechanism, guide rails for rolling out the portal, a mechanism for lifting the arch, built into the portal. The portal lowering mechanism is located inside the portal supports fixedly mounted on the furnace tilt mechanism. The rails are fixedly mounted on the supports. Two double-acting hydraulic cylinders for rolling out the portal with the vault are pivotally attached to the portal at one end, and pivotally mounted outside the furnace with the other. The tilt mechanism is made in the form of a frame mounted on fixed supports. The vault lifting mechanism consists of hydraulic cylinders connected to a system of levers located on the portal.

Known steel furnace with a lower mechanism for tilting the furnace / 2 /, which is divided into two types - a roller mechanism and a mechanism for rolling the furnace on a flat or convex surface. The first mechanism can be used with a rack-and-pinion gear, in which an arcuate gear rack is coupled to the output gear of an electromechanical drive on the furnace bottom. When the gear rotates, the rack moves and causes the furnace to roll along the rollers, the toe of the furnace

describes the circle, deviating down and back, which creates inconvenience when

metal spill. Such a drive is expensive and difficult to install. When tilting the furnace to the rollers, a transmission with a pushing rail or roller is more often used. The use of the screw also provides self-locking mechanism

F27B3 / 08, C21C5 / 52 STEEL FURNACE

Known steel furnace / 3 / containing the casing, the mechanism of the tilt of the furnace with the rolling of the supporting mechanisms of the furnace on a plane or convex bed. The drive of these mechanisms can be electromechanical (with pushing rails) or hydraulic (with pushing plungers). In both cases, the mechanism is double (double-sided), so that a slag bowl can pass between them and they are calculated so that if the failure of one of the drives could tilt the furnace using the second.

The closest analogue is a steel-smelting furnace / 4 /, containing a casing having a cylindrical shape or slightly conical, fixed portal, a frame on which a furnace bath and lateral furnace tilt mechanisms are mounted. The furnace casing is supported by two cast segments attached to it on cast iron beds fixed to the furnace foundation. When segments roll across the beds, the furnace moves forward or backward and leans; its toe describes the cycloid. To eliminate the mutual sliding of the segments and the beds, they are supplied with teeth. The furnace is tilted with a screw, which is screwed into a nut pivotally mounted on one of the segments and pulls the furnace toward itself or pushes it towards the loading window. The screw can be rotated manually or using an electric motor.

The disadvantages of the known furnace are the sensitivity of the tilt mechanism of the furnace to distortions, which requires very careful installation, and the difficult working conditions of the furnace frame, since the presence of side supports causes high bending stresses in the stiffening ring. In addition, the one-sided arrangement of the drive, and hence the screw force applied to one side of the furnace, creates a moment tending to rotate the furnace around a vertical axis.

The objective of the proposed utility model is to create a furnace tilt mechanism having high reliability.

The problem is achieved in that in the furnace containing the casing, a fixed portal with a vault, the furnace tilt mechanism is made in the form of a cable mechanism consisting of a rope, one end of which is fixed to the transverse beam of the fixed

portal, another on a winch drum.

In FIG. 1 shows a diagram of a General view of a steel furnace.

The cable block mechanism consists of a rope 1, one end of which is fixed on the transverse beam of the fixed portal 2, the other on the drum of the winch 3. The cable is stored through a system of bypass blocks located on the transverse beam of the fixed portal and the ends of the longitudinal beams of the frame 4, on which the furnace bath 5 is installed The cable block mechanism is a 6-fold polyspat. In the electric furnace complex, two cable-block mechanisms were used, each with a separate cargo winch. Mechanisms are installed one at a time on both longitudinal beams of the frame.

The cable block mechanism works as follows:

The furnace is tilted at an angle of 30 ° to the side of the metal drain and to the side of the working window for downloading slag. The tilt is carried out by two electric winches with a rope winding on the winch drum. When both winches are turned on simultaneously (both simultaneously) to wind the rope onto the drum, the frame, together with the furnace bath, rotates around hinges located at opposite ends of the longitudinal beams, and rises. When both winches are turned on to wind the rope from the winch drum, the frame, rotating around the hinge, lowers the ends of the longitudinal beams, while the bath tilts towards the working window. The operation of raising and lowering the frame with block-block mechanisms is also used when rolling out the bathtub under loading. The furnace tilt mechanisms are equipped with a braking and locking system.

Compared with the known mechanisms for tilting the furnace, the proposed one is more reliable, simple in execution, not requiring large material costs.

Sources of information taken into account:

3

2. Gorobets V.G., Gavrilova M.N. Steel production in an arc furnace. M., "Metallurgy 1986 p. 70-71

3. Electric industrial furnaces, ed. Svenchansky A.D. M., Energoizdat 1981, p. 64-65.

4. Ibid. P. 65.

5. Ibid. P. 65

bg

 A.M. Gladyshev

Z-g-Sg A.M. Gladyshev

A steel furnace containing a casing, a fixed portal with a vault, a furnace tilt mechanism, characterized in that the furnace tilt mechanism is made in the form of a cable mechanism consisting of a rope, one end of which is fixed to the transverse beam of the fixed portal, the other to the winch drum.

General

JSC “PO

Author:

Utility Model Formula

A.M. Gladyshev

A.M. Gladyshev

Claims (1)

A steel furnace containing a casing, a fixed portal with a vault, a furnace tilt mechanism, characterized in that the furnace tilt mechanism is made in the form of a cable mechanism consisting of a rope, one end of which is fixed to the transverse beam of the fixed portal, the other to the winch drum.