JPH0435001Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a pot turntable for rotating and moving a pot for metallurgical treatment of hot metal and molten steel.

(Prior Art) As shown in FIG. 4, a conventional pot turntable is provided with a swing bearing 11 at the center of rotation C and a row of wheels around the circumference, and the pot load is handled by the swing bearing 11.
Alternatively, as shown in Fig. 5, the center post 12 is placed at the turning center C,
Two rows of wheels are provided around the circumference, the pan is loaded by the wheels, and the horizontal force during turning is supported by the center post 12.

(Problems to be Solved by the Invention) However, in the case of the one shown in FIG. 4, since the pot load is also applied to the swing bearing 11, it is necessary to increase the load capacity of the swing bearing 11, resulting in a high purchase cost. Further, the connecting frame between the swing bearing section and the wheel section is required to have high rigidity, and the weight of the turntable frame 19 increases, resulting in an increase in cost. In particular, as the diameter of the turntable frame 19 increased, the weight increased significantly.

Similarly, the turntable frame 19 shown in Fig. 5 is required to have high rigidity, which increases the weight and also requires the installation of a slip ring and a rotary joint for supplying utilities (electricity, air, water, hydraulic oil, etc.) due to the structure. It's impossible. In recent years, it has become common for turntables to automatically perform electric greasing, detecting the presence of a pan, opening/closing the pan SN (sliding nozzle), purging, etc., and moreover, the table can rotate more than 360 degrees. be. For this reason, it has become essential to install slip rings and rotary joints to supply utilities for the equipment installed on the turntable.

(Means for Solving the Problems) In order to solve these problems, the present invention provides a ladle rotating device for processing hot metal and molten steel, which includes a plurality of ladle carts arranged in the circumferential direction and supports the ladle carts. In addition to providing a rail for swing running, a swing bearing consisting of an outer ring, an inner ring, and rolling elements that roll between them is provided at the center of rotation, and a vertical rolling surface on which the rolling elements can move in the vertical direction is provided on the inner ring or the outer ring. To provide a pot turntable characterized in that the outer ring of a swing bearing or a center frame directly connected to the outer ring and the pot truck are connected by a connecting beam.

(Function) A swing bearing consisting of an outer ring, an inner ring, and rolling elements rolling between them is installed at the center of rotation, and a vertical rolling surface on the inner ring or outer ring that allows the rolling elements to move vertically is provided, so the outer ring It can move freely in the direction perpendicular to the inner ring. Therefore, the pot load is not applied to the swing bearing and the connecting beam. Only a small horizontal force acts on the swing bearing and the connecting beam to keep the pot truck from derailing from the swing travel rail when it travels in the circumferential direction.

Furthermore, since the pot truck is independent, there is no need for a large number of connecting beams to form a conventional integrated disk shape.

Furthermore, since a swing bearing is provided at the center of the swing, a slip ring or a rotary joint for supplying utilities can be provided inside the inner ring of the bearing.

(Example) Embodiments of the present invention will be described below with reference to the drawings.

Figures 1, 2, and 3 show the present invention, in which four pot carts 1 are installed at 90° pitch in the circumferential direction, and a swing bearing 2 is installed on the base frame 5 in the center part. Furthermore, a center frame 3 is connected to the top thereof, and the pot truck 1 and the center frame 3 are connected by a connecting beam 4.

The turning drive is performed by a turning drive device 8 having a pin pinion 18 via a pin gear 7 provided on the outer periphery of the turntable pot truck 1.

The pot truck 1 is provided with four wheels to support the entire pot load, and for this purpose rails 6 for inner and outer wheels are laid on the ground.

FIG. 3 shows details of the center part, in which the outer ring 16 of the swing bearing 2 is bolted to the center frame 3, and the inner ring 14 is bolted to the base frame 5. Horizontal force during turning drive is transmitted by rollers 15 installed between outer ring 16 and inner ring 14.

Further, in the vertical direction, since the rollers 15 are arranged in a single row, the outer ring 16 is free with respect to the inner ring 14. Therefore, vertical movement of the center frame 3 relative to the fixed base frame 5 due to wear of the wheels and rails 6, deflection of the frame due to the presence or absence of the pan 17, etc. can be absorbed by the swing bearing 2.

A power supply device 9 is placed on the base hardware 10 at the center of the rotation.
has been established.

It should be noted that the present invention is not limited to only those shown in the embodiments, and that the number of pot carts can be changed, that the swing drive can be performed using a different method, for example, that the outer ring of the swing bearing can be driven with gears, and that other features can be used. It is of course possible to make various changes without departing from the gist of the invention.

(Effect of idea) The present invention has the following remarkable effects.

A: Only a small horizontal force acts on the swing bearing installed at the center of the swing to keep the pot truck from moving out of the specified circular orbit. Therefore, the load capacity of the conventional slewing bearing is only about 1/20th, and the slewing bearing can be significantly lowered.

Furthermore, since only a small force acts on the connecting beams, only one extremely thin connecting beam is required for each pot truck, and the weight of the pot turntable can be significantly reduced.

B. A utility supply device can be installed at the center of the rotation, and automatic electric greasing on the turntable, detection of the presence of a pan, opening/closing of the pan SN, purging, etc. can be performed automatically.

[Brief explanation of drawings]

1, 2, and 3 are a plan view, an elevation view, and a detailed view of the center of rotation of the embodiment of the pot turntable of the present invention, and FIGS. 4 and 5 are elevational views of the prior art. It is. 1...Pot truck, 2...Swivel bearing, 3...
Center frame, 4... Connecting beam, 5... Base frame, 6... Rail, 7... Pin gear,
8...Swivel drive device, 9...Power supply device, 10...
Base hardware, 11... Swivel bearing, 12...
Center post, 13...Power supply device rotation stopper, 1
4... Inner ring, 15... Roller (rolling element), 16
... Outer ring, 17 ... Pot, 18 ... Pin pinion,
19... Turntable frame, 20... Electrical wiring.

Claims (1)

[Scope of utility model registration request] In a ladle turning device for processing hot metal and molten steel, a plurality of ladle carts are provided in the circumferential direction, a turning rail is provided to support the ladle carts, and an outer ring, an inner ring, and rolling elements that roll between them are provided at the turning center. A slewing bearing is provided, a vertical rolling surface on which the rolling elements are vertically movable is provided on the inner ring or the outer ring, and the outer ring of the slewing bearing or a center frame directly connected to the outer ring is connected to the pot truck by a connecting beam. A pot turntable that is characterized by the ability to