RU2210710C2 - Melting furnace floor charging machine - Google Patents

Abstract

FIELD: metallurgy; furnace charging machines. SUBSTANCE: proposed floor charging machine for melting furnaces has bridge with travel motion mechanism, driven trolley moving along bridge and carrying charging bar with swinging, rotation and pan closing mechanisms and operator's cabin. Charging bar, bar swinging and rotation mechanisms and pan closing mechanism and as well as operator's cabin are secured on turntable installed on trolley for turning. All wheels of trolley are driving ones. Trolley travel motion drive is made in form of reduction gears whose driven shafts carry pair of running wheels installed in [-- shaped guides of bridge. EFFECT: enlarged operating capabilities, improved reliability in operation. 6 dwg

Description

 The invention relates to metallurgy, and more specifically to devices for loading smelting furnaces.

 Known floor machine for loading smelting furnaces containing a trolley having two front wheels and mounted on the rotary disk driven rear wheel, the axis of which is offset from the axis of rotation of the rotary disk in the direction of the longitudinal axis of the trolley, preferably back (Germany 3147630, B 62 D 7/06 , declared 02.12.81, op. 09.06.83).

 A trunk (work bar) is installed on the trolley, on which either a loading trowel, or a slag eliminator, or another tool can be fixed.

 This design of the machine provides the rotation of the head of the trunk due to the eccentric fastening of the rear axle of the machine, however, this angle of rotation is insignificant and requires additional devices to feed the molds or other tools into the zone of their capture.

 In addition, it is possible to tear the rear wheel off the floor when the trunk captures a tinplate or other heavy tool.

 Of the known floor machines for loading melting furnaces, the closest in technical essence is a machine containing a bridge with a mechanism for its movement, a trolley moving along the bridge, carrying a trunk with mechanisms for its swing, rotation and short circuit of the trough, and a driver’s cab (see US Pat. RF 2040746 , F 27 B 3/18, claimed 12.11.92, op. 07.27.95).

 All trolley mechanisms are fixed on the frame. The trolley is equipped with front driving, rear driven and additional wheels. The driven wheels are in contact with the upper rail, and the additional ones are in contact with the lower rail.

 The driver’s cab is installed on the bridge.

 This design eliminates the possibility of the truck tipping over when the trunk picks up the load.

 A disadvantage of the known design of a floor-standing machine for loading melting furnaces is that additional devices are required to feed troughs and technological tools into the grip zone of the trunk, since the trunk only performs reciprocating, swinging and rotational movements.

 The inability to rotate the trunk in the horizontal plane does not allow using this machine for other technological operations, for example, for removing slag, leveling the material in the furnace.

 The objective of the present invention is to create a machine design that allows you to expand its technological capabilities and improve reliability.

 The problem is solved in that in the floor loading machine of melting furnaces containing a bridge with a mechanism for moving it, a drive trolley moving along the bridge carrying a trunk, mechanisms for swinging the trunk, rotation of the trunk and locking the trough, and a driver’s cab, according to the invention, trunk, rotation mechanisms of the trunk , swing of the trunk and short circuit of the trough and the driver’s cab are mounted on a platform mounted with the possibility of rotation relative to the trolley, all the driving wheels of which are driving, while the drive for moving the trolley is n as a gear, a driven shaft which is a shaft carrying a pair of running wheels installed in the [-shaped guide bridge.

Such a constructive implementation of a floor-standing machine for loading melting furnaces allows expanding its technological capabilities by turning the trunk by almost 360 ^° , which makes it possible to load the furnace with the molds located behind the machine, leveling the material in the furnace, mixing liquid metal, downloading slag and other works.

 In addition, since the driver’s cab is mounted on a turntable, the trunk head is always in front of the machine operator, which increases the reliability of the machine.

 The possibility of tipping the trolley during the capture of cargo by the trunk is excluded, since the running wheels of the trolley are installed in the [-shaped guides of the bridge, and this also increases the reliability of the machine.

 The execution of the drive in the form of a gearbox, located on the axis of a pair of running wheels, allows you to have both front and rear drive wheels, which eliminates the possibility of slipping wheels depending on the location of the load loaded into the furnace.

To explain the invention, a specific embodiment of the invention is given below with reference to the accompanying drawings, in which:
in FIG. 1 shows a floor machine for loading melting furnaces, a general view (two trunk positions are shown),
figure 2 is the same, a view in plan;
figure 3 is a view a in figure 2;
figure 4 is a section bB in figure 2;
figure 5 - trolley (without platform);
figure 6 is the same plan view.

 The floor machine for loading melting furnaces consists of a bridge 1 with a mechanism 2 for its movement, moving along the bridge 1 of the drive trolley 3, carrying the trunk 4, and the driver's cab 5.

 The trolley 3 is made of a welded-molded frame 6, which has four driving wheels 7, and is mounted on it with the possibility of turning the platform 8, on which the trunk 4, the mechanism 9 of the swing of the trunk, the mechanism 10 of rotation of the trunk, the mechanism 11 of the closure of the trough and the cab 5 are mounted the driver.

 The driving wheels 7 are installed in the [-shaped guides 12 of the bridge 1.

 The drive of the trolley 3 is electromechanical, consisting of electric motors 13, gearboxes 14 and brakes 15. The driven (low-speed) shaft 16 of gearbox 14 is a shaft carrying a pair of running wheels 7. Each pair of running wheels 7 has its own drive to prevent slipping of the running wheels 7 along guides 12 of the bridge 1, depending on the location of the trunk 4. The gears 14 are placed diagonally relative to the longitudinal axis 0-0 of the trolley 3 (Fig.6).

 The rotation drive of the platform 8 (Fig. 4) consists of an electric motor 17, a brake 18, a gearbox 19, on the output shaft 20 of which a gear 21 is fixed, which interacts along the outer diameter with a ring gear 22 mounted on the platform 8.

 The rotation of the platform 8 is provided by thrust bearings 23. To prevent tipping, thrust bearings 24 are used.

 The machine operates as follows.

 When loading the furnace with troughs by moving the bridge 1 and the trolley 3, the head of the trunk 4 is combined with the lock of the trough, by means of the mechanism 9 of swinging the trunk 4, the trunk is inserted into the lock and fixed by the tacking circuit 11. Then, by moving the trunk 4 upward, the trough is raised, and by moving the trolley 3, it is introduced into the furnace. With the rotation mechanism 10, the trunk with the trough is rotated around the longitudinal axis and the contents of the trough are poured into the furnace.

When loading the furnace with the troughs located between the furnace and the machine, the trolley 3 makes reciprocating movements along the bridge 1. When the troughs are located in another place, the platform 8 is rotated by the required angle (up to 300 ^o to one side or the other from the axis of the trolley 3).

 Leveling the material in the furnace, mixing the metal, downloading slag and cleaning the bottom are carried out with special tools installed on trunk 4 by means of a lock.

 When performing these operations, the bridge 1 of the machine and the running frame 6 of the trolley 3 make reciprocating movements, and the platform 8 of the trolley 3 - horizontal rotations at the required angle.

 The proposed floor machine for loading melting furnaces in comparison with the known ones allows to increase the maneuverability of the machine and to simplify control by moving the tool at any angle.

Claims (1)

 A floor machine for loading melting furnaces, comprising a bridge with a mechanism for moving it, a drive trolley moving along the bridge carrying a trunk, trunk swing mechanisms, trunk rotation and tack closure, and a driver's cab, characterized in that the trunk, trunk swing mechanisms, trunk rotation and the short circuits of the trough and the driver’s cab are mounted on a platform mounted on the trolley with the possibility of rotation relative to it, while all the running wheels of the trolley are leading, and the drive for moving the trolley is made in the form of gears, leads mye shafts which are a pair of running wheels installed in the [-shaped rail bridge.

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