JPH0469203B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a drive mechanism for a raw material charging device in a bellless blast furnace.

[Conventional technology]

A material charging device for a bell-less blast furnace is, for example, a charging chute that protrudes radially downward from the bottom of a vertical chute provided in the core of the blast furnace, and a lower chute that is tiltable is provided at the tip of the charging chute. The structure is such that the entire chute is rotated around the core and the lower chute is tilted in the radial direction of the furnace to charge raw materials into a predetermined position within the furnace.

As a drive mechanism for turning and tilting these chute, for example, Japanese Patent Publication No. 55-37564, 56-
There is a technique disclosed in publications such as No. 31322.

The drive devices disclosed in these publications have a rotating disk 51 in the furnace mouth and a material inlet 52 as shown in FIG.
The raw material supply and distribution device is suspended below the rotary disk 51, and a device is provided above the rotary disk 51 so as to be able to rotate independently of the rotation of the disk. A toothed wheel 53 is mounted, and a shaft arrangement 54 is provided which extends through the rotary disc and is rotatably mounted therein and is driven by the toothed wheel 53. A tilting device 55 for angularly displacing the device is provided, and a main drive motor 56 and a transmission device 57 are provided to provide independent rotational movements to the rotating disk 51, toothed wheel 52, and shaft device 54. be.

[Problem to be solved by the invention]

By the way, in such a conventional drive device, a toothed wheel is provided on a rotating disk, and a transmission device is used to connect the rotating disk, the toothed wheel,
The mechanical transmission mechanism becomes complicated, such as by giving rotational motion to each shaft device independently, and the design and
Manufacturing and maintenance of the equipment after operation requires a lot of effort and expense, and it has long been desired to simplify the structure.

The present invention has been made in view of the above problems, and provides a simplified drive mechanism for a raw material charging device.

[Means to solve the problem]

The present invention provides a raw material charging system in which a charging chute is attached to the core of a bell-less blast furnace that protrudes radially downward from the lower part of a vertical chute that is rotatably provided, and a lower chute that is tiltable is attached to the tip of the charging chute. In the apparatus, a swinging Robaro is attached to the outer periphery of the vertical chute, and a transmission shaft passing longitudinally through the shaft center of the chute is attached, and a swinging mechanism is configured to rotate the swinging Robaro from a swing motor via a differential reduction gear to rotate the chute. , a blast furnace raw material charging device comprising a tilting mechanism for driving a transmission shaft from a tilting motor via the differential reducer and tilting a lower chute by a tilting gear attached to a lower part of the transmission shaft. It is a chute drive mechanism.

[Effect]

The chute of the charging device of the present invention is a side feed that receives raw materials through a vertical chute provided in the furnace core and charges the raw materials into the furnace from a lower chute installed at an eccentric position. The system has a simple tilting mechanism by placing a transmission shaft for tilting at the center of the axis of the vertical chute, and the rotating movement is performed via a rotating robot installed on the outer circumference of the vertical chute. Transmitted from the swing motor. In addition, the tilting motion of the lower chute is transmitted from a tilting motor installed outside the furnace via a transmission shaft, and this output is driven independently of the swinging motion by a differential reducer. Activate the tilting gear attached to the bottom of the In this manner, the raw material is charged into a predetermined position in the furnace by performing rotation and tilting at appropriate times.

〔Example〕

An embodiment of the present invention will be described based on the drawings.

FIG. 1 is a perspective view showing a chute drive mechanism in a material charging device for a bellless blast furnace.

The chute structure of this raw material charging device consists of a vertical chute 1 that is rotatably provided in the reactor core, and a charging chute 2 that protrudes in the radial direction from the lower end of the vertical chute 1.
is installed. Furthermore, a lower chute 3 consisting of three stages is attached to its tip, and the first stage chute 3a is perpendicular to the radial direction and has a predetermined inclination angle (inclined axis 22), It is divided into two parts near the position, and the lower chute is rotatable around the tilting shaft 22. By rotating the first stage chute 3a around the tilting shaft 22, the second and third stage chute 3b, 3
c tilts (oscillates) in the radial direction 23 of the furnace, and together with the rotation of the vertical chute 1, the three-stage chute 3c can charge raw materials at any position within the furnace.

The drive mechanism includes a rotating robot 11 attached to the outer periphery of the vertical chute 1, and a tilting transmission shaft 12 that runs vertically through the axial center of the vertical chute 1. Of these, the rotating mechanism is installed outside the furnace. Swing motor 1
3 to differential reducer 14 and gears 15a, 15b
The swinging robot 11 is driven to swing through the shaft, and the entire chute structure is turned. The tilting mechanism also connects a tilting motor 16 installed outside the furnace to a differential reducer 1.
4 and gears 17a to 17d, the transmission shaft 12 is first driven to rotate. Then, via the bevel-shaped gear 18 provided at the bottom of the vertical chute 1,
The rotation of the transmission shaft 12 is transmitted to the worm gear 19 attached to the first stage chute 3a.
A rotational force is applied to the chute 3a of the stage to tilt the lower chute 3.

In addition, 20 is a position detector attached to the differential reducer,
21 is a rotating disk.

The structure is as described above, and the swinging operation of the chute structure is performed by the swinging motor 13 via the swinging robot 11.
The tilting motion is transmitted from the tilting motor 16 via the transmission shaft 12, and these outputs are each independently driven by the differential reduction gear 14. In this manner, the chute is rotated and tilted to charge the raw material into a predetermined position within the furnace.

[Effects of the Invention] As explained above, the chute drive mechanism according to the present invention eliminates the need for a toothed wheel provided on the rotating disk, and simplifies the gear structure for power transmission. The tilting mechanism can be simplified by having a structure that runs vertically through the tilting mechanism, and the function of charging the raw material is sufficiently performed. Therefore, it is easy to design and manufacture, and it also requires time and effort to maintain the equipment. Therefore, equipment costs and operating costs can be reduced.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a chute drive mechanism according to an embodiment of the present invention, and FIG. 2 is a perspective view showing an example of a conventional drive mechanism. 1...Vertical chute, 2...Charging chute, 3
...Lower chute, 3a, 3b, 3c...Lower chute divided into three stages, 11...Swivel Robaro,
12...Transmission shaft, 13...Swivel motor, 14...
Differential reducer, 16...Tilt motor, 15a, 15
b, 17a-17d, 18, 19...gear, 20
... Differential reducer, 21 ... Rotating disk, 22 ... Inclined shaft, 23 ... Radial tilting (oscillation) range of the lower chute from the furnace center to the furnace wall.

Claims (1)

[Claims] 1. In a raw material charging device in which a charging chute that protrudes radially downward from the bottom of a vertical chute that is rotatably provided in the core of a bell-less blast furnace is attached, and a lower chute that is tiltable is attached to the tip of the charging chute, A swinging Robaro is attached to the outer periphery of the vertical chute, a transmission shaft passing longitudinally through the shaft center of the chute is attached, a swing mechanism is configured to rotate the swinging Robaro from a swing motor via a differential reducer, and swing the chute, and a tilting motor. A tilting mechanism for driving a transmission shaft through the differential reducer and tilting a lower chute by a tilting gear attached to a lower part of the transmission shaft. .