JPH077317Y2 - Decontamination device for degassing tank exhaust duct - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of use] The present invention relates to a device for removing deposits deposited in the exhaust duct of a degassing device for molten steel.

[Prior Art] FIG. 8 is an explanatory diagram of a degassing tank exhaust duct. Ladle 40
The immersion pipe of the degassing tank 31 is dipped in the molten steel 41 stored in, and the gas in the degassing tank 31 is sucked by the vacuum device 35 to degas the molten steel 41. At this time, in the degassing tank exhaust duct 32, scattered matter adheres to and accumulates on the inner wall surface of the gas cooler 33 as shown by the slanted lines in the figure (this deposit is referred to as "glass 34" below), which hinders exhaust. In order to do this, it is necessary to remove these trash 34 regularly. Conventionally, in removing the glass 34,
The exhaust duct 32 is separated from the degassing tank 31 at the point A shown in FIG. 8, and the degassing tank truck 42 is driven to move the degassing tank 31, and the exhaust duct 32 side is moved as shown in FIG. , A worker crushes the glass 34 using an air breaker or a scoop, removes the gas cooler 33, and then shoots with a scoop
I was dropping it to 36. Since this work is performed in a harsh environment with high temperature and a large amount of dust, it is necessary to take thorough safety and health measures.

In addition, as shown in FIG. 10, the degassing tank 31 side is removed after the worker melts and divides the debris 34 with a jet lance (oxygen blow lance) 37 in a high temperature state between operations. , It is scratched out in the foreground, which is also a harsh work in a very high temperature environment.

These operations are performed manually, and in particular, on the side of the exhaust duct 32, a worker directly enters the inside of the exhaust duct to perform the work, and thus it took a long time to cool the inside of the exhaust duct and remove the debris. .

[Problems to be solved by the device]

When removing debris that has adhered to or accumulated on the inner wall surface of the degassing tank exhaust duct, the working environment is poor in manual work.

Since it is a manual work, it takes a long working time and the operation stop time becomes long.

There was a problem.

The present invention has been proposed in order to solve these problems, and an adhering matter removing device in a degassing tank exhaust duct is provided, which not only saves the worker from a bad working environment but also shortens the operation stop time. The challenge is to provide.

[Means for Solving the Problems]

The present invention solves the above-mentioned problems, and is an adhering matter removing device in a degassing tank exhaust duct which is composed of the following technical means. That is, a transverse carriage that runs in the axial direction of the exhaust duct, a rotatable post that is erected on the transverse carriage, a hollow arm that extends horizontally from the pivot post, and that is rotatable about a horizontal axis. The parallel link mechanism is attached and has a breaker and a crushed material scraping plate attached to the tip side link, and a parallel link mechanism drive cylinder that moves the parallel link mechanism to move the chisel attached to the breaker up and down and back and forth.

Further, it is more effective if a traveling carriage is mounted and a traveling carriage that travels in a direction orthogonal to the transverse carriage is provided.

For example, the traveling carriage is made to travel on the same first rail as the degassing tank carriage, and the second carriage at the same height as the rails of the transverse carriage for loading the transverse carriage and retracting from the first rail.
If the rail is provided, the attachment and removal in the exhaust duct and the degassing tank can be performed more efficiently.

[Action]

According to the present invention, the chisel of the breaker can be freely moved in the front, rear, upper, lower, left and right directions and the inner circumferential direction of the exhaust duct to quickly remove the debris from the deposits in the exhaust duct of the degassing tank. Further, the debris separated from the exhaust duct and accumulated in the lower portion can be discharged to the outside by operating the scraping plate.

Further, since the second rail having the same height as the rail of the traverse truck is provided in the direction orthogonal to the first rail, the traverse truck is retracted from the traveling truck to the second rail side, and the turning post is turned. Then, by changing the direction of the hollow arm by 180 degrees and exchanging the traveling carriage and the degassing tank carriage, the degassing tank side can be easily removed.

Since the present invention mechanizes the work manually performed in the past, it is possible to improve working conditions, shorten the working time, and improve the operating efficiency.

〔Example〕

An explanatory view of one embodiment of the present invention is shown in FIGS. FIG. 1 (a) is a side view, FIG. 1 (b) is a rear view, and FIGS. 2 and 3 are side views of an arm during a rattling operation.

The device of the present invention comprises a traveling carriage 1 traveling on a rail by a motor 23, a traverse carriage 2 traveling on the traveling carriage 1 in a direction orthogonal to the traveling carriage, and a horizontal movement by a motor 15 and a swing gear 12 described on the traverse carriage 2. A swivel post 3 configured to swivel, a hollow arm 4 having one end attached to the swivel post 3 and extending horizontally so as to be horizontally swivel, and rotatable about a horizontal axis by a motor 16 and a swivel gear 13; 4, a parallel link mechanism 5 provided with a breaker 10 for crushing the hollow arm 4 on the opening side of the hollow arm 4 from the duct, and drive cylinders 8 and 9 for driving the chisel 11 at the tip of the breaker 10 up and down and back and forth. Etc.

The parallel link mechanism 5 is pin-coupled to a fulcrum 14 provided at the center of the hollow arm 4 at its center point, and a drive cylinder 8 fixed to the arm 4 moves the seesaw to move the breaker 10 in the vertical direction. Further, the parallel link mechanism 5 advances and retracts the breaker 10 by means of a drive cylinder 9 provided around one end of the parallel link mechanism 5. An air breaker is used as the breaker 10,
A chisel (11) for peeling and crushing the dust of the duct and a scraping plate (18) for scraping the crushed and scraped dust are provided at the tip.

Next, another embodiment of the above-mentioned parallel link mechanism and the drive cylinder for moving the parallel link mechanism and driving the chisel attached to the breaker up and down and back and forth will be described with reference to FIGS. 4 and 5.

Instead of the hollow arm 4 of FIG. 1, a hollow cylinder 51 which is disposed on a swiveling post (not shown) and is swivelable about a horizontal axis by a swivel gear 13 (FIG. 1) via a gear 50, and a hollow Cylinder 51
Beam 58 which moves seesaw around fulcrum 55 provided inside,
A cylinder 52 provided in the hollow cylinder 51 for seesawing the beam 58, two sets of parallel link mechanisms 56, 57 provided on both sides of the beam 58 with the beam 58 as a common side, and a link on the tip side thereof, respectively. Scraper 59 and breaker 10
The parallel link mechanism drive cylinders 53, 54, etc., which move the chisel 11 attached to a and the parallel link mechanisms 56, 57 to independently drive the chisel 11 and the scraping plate 59 back and forth, are configured.

FIG. 5 shows a state in which the cylinder 53 is operated and the scraping plate 59 is erected. When the cylinder 54 is operated, the chisel 11 can be moved in the direction of the arrow.

Thus, if two sets of parallel link mechanisms are provided and the chisel and the crushed material scraping plate can be operated independently, it is possible to prevent the chisel from being behind the crushed material scraping plate. Can be improved.

Next, the operating procedure for removing the debris from the exhaust duct using the apparatus of the present invention shown in FIG. 1 will be described with reference to FIG. FIG. 6 shows an example in which two degassing tanks 31 are provided (one tank is a preliminary device). Incidentally, FIG. 7 is a front view of FIG.

(1) Work on the exhaust duct side (crushing of waste) The degassing tank 31 and the exhaust duct 32 are separated, and the first rail 60
Drive the degassing tank truck 42 on the top to move the degassing tank 31,
After that, the traveling vehicle 1 on the first rail is moved to align the removing device with the position of the exhaust duct 32.

The chisel of the breaker 10 by moving or adjusting the traverse carriage 2, the swing gear 12, the swing gear 13, and the cylinders 8 and 9, respectively.
The 11 is brought into contact with the glass 34 to be crushed (the state shown in FIG. 2).

Activate the breaker 10 to crush the glass.

After turning the turning gear 13 to crush the debris on the same circumference in the exhaust duct 32, the transverse carriage 2 is moved to move the chisel 11
Is further moved into the exhaust duct 32. This process is repeated to drop the glass on the bottom surface of the exhaust duct 32.

(Scraping out the scraps) Rotate the swivel gear 13 to move the scraping plate as shown in FIG.
By operating the cylinder 9 with the 18 directed toward the bottom side of the exhaust duct 32, the scraping plate 18 can be moved back and forth to drop the glass 34 on the chute. When all the work is completed, the transverse carriage 2 is returned to the original position of the traveling carriage 1.

(2) Work on the degassing tank side The second rail on which the traverse carriage 2 rides on the degassing tank truck 42
It is evacuated from the entrance of 61, the traveling carriage 1 is moved to the entrance of the second rail 61, and the traverse carriage 2 is moved to the second rail 61.
Move to the side. At this time, the stop position of the transverse carriage 2 is set by a limit switch or the like (not shown).

Rotate the swivel gear 12 to move the chisel 11 side to the first rail 60.
And the degassing tank truck 42 is moved to make the degassing tank 31 and the chisel 11 side face each other. At this time, the traveling carriage 1 is retracted to a position where it does not interfere with the degassing tank carriage 42.

Since the work after this is the same as the work on the exhaust duct side, description thereof will be omitted.

According to the present invention, in this way, it is possible to efficiently remove the debris from the exhaust duct side and the degassing tank side with one removing device.

In FIG. 1, 19 is a guide roller of the transverse carriage 2 and 21 is a clamp of the traveling carriage 1.

Reference numeral 20 is a cover of the hollow arm 4 and uses a heat insulating material. That is, since the hollow arm 4 and the hollow cylinder 51 are equipments to be used in a high temperature place, the life of equipments such as cylinders can be extended by covering the surfaces thereof with a heat insulating material.

By using the device of the present invention, it took 7 hours per time in the past to complete the glass removing work in 1 to 2 hours.

The working example by the device of the present invention has been described above with the device of FIG. 1, but the working procedure is the same even if the device of FIG. 4 is used.

[Effect of the Invention] The present invention has the following excellent effects.

The working conditions of workers can be improved.

The debris removal work time can be shortened and the operation efficiency can be improved.

[Brief description of drawings]

1 to 7 are explanatory views of an embodiment of the present invention. FIG. 1 (a) is a side view, FIG. 1 (b) is a rear view, and FIGS. FIG. 4 is a side view of the arm during operation, FIGS. 4 and 5 are explanatory views of another embodiment of the debris removing portion, FIG. 4 is a side view including a partial cross section, and FIG. FIG. 6 is a side view including a partial cross section showing the operation, FIG. 6 is a plan view illustrating the operation of the present invention, FIG. 7 is a front view of FIG. 6, and FIG. 8 is an explanatory view of a degassing tank exhaust duct. 9 and 10
FIG. 9 is an explanatory view of a conventional example, FIG. 9 shows the debris removal work in the exhaust duct, and FIG. 10 shows the degassing tank debris removal work. 1 ... Traffic carriage 2 ... Truck carriage 3 ... Swivel post 4 ... Hollow arm 5 ... Parallel link mechanism, 8 ... Cylinder 9 ... Cylinder, 10, 10a ... Breaker 11 ... Chisel, 12 ...... Slewing gear 13 …… Slewing gear, 14 …… Support point 15 …… Motor, 16 …… Motor 18 …… Scraping plate, 19 …… Guide roller 20 …… Cover, 21 …… Clamp 31 …… Degassing tank, 32 …… Duct 34 …… Gala, 42 …… Degassing tank truck 50 …… Gear, 51 …… Hollow cylinder 52, 53, 54 …… Cylinder 55 …… Support point 56, 57 …… Parallel link mechanism 58 …… Beam 59 59 Scraping board 60 1st rail, 61 2nd rail

Claims (3)

[Scope of utility model registration request] 1. A transverse carriage that travels in the axial direction of an exhaust duct, a rotatable post that is erected on the transverse carriage, and a hollow arm that extends horizontally from the pivot and is rotatable about a horizontal axis. , A parallel link mechanism mounted in the hollow arm and having a breaker and a crushed material scraping plate attached to a link on the tip side, and a parallel link mechanism for moving the parallel link mechanism to move a chisel attached to the breaker up and down and back and forth. An apparatus for removing deposits in a degassing tank exhaust duct, characterized by comprising a mechanism driving cylinder. 2. An adhering matter removing device in a degassing tank exhaust duct according to claim 1, further comprising a traveling carriage on which the transverse carriage is mounted and which travels in a direction orthogonal to the transverse carriage. 3. The first carriage, which is the same as the degassing tank carriage,
3. The degassing tank exhaust duct according to claim 2, further comprising: a second rail having the same height as that of the rail of the traverse vehicle for traveling along the rail of the traverse vehicle and for retracting the traverse vehicle onto the first rail. Deposit removal device.