JP4744030B2 - A sleeper hanging jig filled in the blast furnace - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a sleeper suspending jig used in a method of filling sleepers which is performed in preparation for burning a newly installed or modified blast furnace.
[0002]
[Prior art]
Newly constructed or modified blast furnaces are dried, and then sleepers are stacked from the bottom of the furnace to the tuyere level to prepare for burning, and coke is filled from above, and coke and ore are alternately filled from above. The reason why the sleepers are filled is to improve the passage of gas for an early temperature rise at the bottom of the furnace, and to prevent low-temperature coke having a large heat capacity from descending dredging.
[0003]
Traditionally, sleepers are filled in by several to several tens of sleepers from the opening of the blast furnace tuyere, and during that time, long sleepers thrown by workers who have been evacuated to a safe place in the furnace are manually specified. It was carried out by a method called “well girder loading” in which it was transported to the location and stacked up one step at a time from the bottom of the blast furnace to just below the tuyere.
[0004]
[Problems to be solved by the invention]
The conventional sleeper stacking method described above requires many workers and time.
An object of this invention is to provide the method of filling the sleeper mentioned above with a small number of people efficiently and in a short time, and the sleeper used in the method.
[0005]
[Means for solving problems]
The invention according to claim 1 includes a chain block, a hoist, etc., attached to the lower end of a wire, rope, chain, etc. suspended from the top of the furnace or in the vicinity thereof, in order to prepare for the newly installed or modified blast furnace. another wire and the rope was subjected to lifting hook of the hoisting device, the rope, after hanging jig attached to rope end of such chain was attached detachably on sleepers, operating the hoisting device Then, the sleeper is lifted, and the guide wire such as the guide wire, rope, chain, etc. connected to the above-mentioned rope, hoisting device, lifting hook or hanging jig is pulled up in the required direction and lifted. consists in carrying sleepers to desired positions, a said lifting jig used in the filling method of sleepers to the blast furnace, the jig body co-section to be fitted from the end face or side surface sleepers, body A lever that is pivotally supported by the middle part and is pivotable about this pivot point, has a claw part that engages with a sleeper at one end, and is connected to a rope that is hung on the lifting hook at the other end It is characterized by comprising.
[0006]
Sleepers filling operation definitive furnace to the present invention, lifting the sleepers by operating the hoist device is performed by pulling the guide rope to the required orientation, hanging the sleeper, the jig body sleepers By lifting from the end face or from the side, the lever whose other end is pulled up by the rope turns and the claw part at one end bites into the sleeper and is fixed, so the sleeper is lifted in an inclined state, for example. However, it is carried without being twisted or displaced.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
An embodiment of an apparatus used in the method of the present invention for stacking sleepers on the bottom of a furnace for preparation for burning after drying a newly installed or modified blast furnace will be described below with reference to the drawings.
In the blast furnace 1 shown in FIG. 1, wire ropes 3 as ropes are suspended from manholes near the top of the furnace, for example, left and right ignition manholes 2. Each wire rope 3 is provided with an electric hoist 5 as a hoisting device at the lower end, and the electric hoist 5 is positioned several meters above the tuyere 4 level.
[0010]
A hanging hook 6 suspended from the electric hoist 5 and moved up and down by an operation of a controller (not shown) can be lowered to the furnace bottom, and a guide rope 7 as a guide rope is connected to pull the guide rope 7. Thus, the hook 6 can be moved in an arbitrary direction.
[0011]
As shown in FIG. 2, the wire rope 8 of the rope which hooks an intermediate part on the hook 6 has the hanging jig 9 attached to both ends. As shown in FIG. 4, the hanging jig 9 has a U-shaped jig body 11, and an intermediate portion is pivotally supported by the jig body 11, and can be turned around the pivot point 16. It has a claw portion 14 that is hooked to the sleeper 13 through a slit 12 formed in the jig body 11 at one end, and a lever 15 that is connected to the wire rope 8 at the other end. When the wire rope 8 is pulled up in the fitted state, the lever 15 rotates in the clockwise direction from the one-dot chain line position in FIG. 4, and the claw portion 14 bites into the sleeper 13 and fixes the sleeper 13.
[0012]
FIG. 3 shows another example of a hook on which a wire rope is hung. A suspension ring 18 that is hung on the hook 19 is formed at the end of the wire rope 17. The stopper 20 is attached so that it can be opened and closed. The stopper 20 is always closed by a spring (not shown) to prevent the suspension ring 18 from coming off, and when the suspension ring 18 is pushed in, it is pushed down against the action of the spring and opened.
[0013]
Next, a method for filling sleepers into the bottom of the blast furnace will be described.
First, the workers in the blast furnace are evacuated to a safe place, and then sleepers are thrown from the tuyere 4 into the bottom of the furnace in units of several to several tens. After throwing, the operator lowers the hanging hook 6 or 19 from the electric hoist 5 by operating the controller. Before and after the hook 6 or 19 is lowered, the jig main body 11 of the hanging jig 9 at both ends of the wire rope 8 is fitted and latched to the sleepers 13 thrown into the furnace. Then hooking the hanging ring 18 of the intermediate portion of the suspension hook 6 or wire rope 17 ends for wire rope 8 hauled guide rope 7 on the hook 19. Thereafter, the guide rope 7 is grasped with one hand, the controller 6 is operated with another hand, the hook 6 or 19 is raised, and the sleeper 13 is lifted. Then, the guide rope is pulled to carry the sleeper to a target location, and the direction of the sleeper 13 is lowered in a predetermined direction.
[0014]
As described above, the sleepers are stacked, and when the sleepers in the furnace are stacked, a new sleeper is thrown in the same manner with the operator retracted. Thereafter, the sleepers are stacked in the same manner, and the furnace is filled.
[0015]
In another method, as shown in FIG. 5, an overhanging deck 21 having a height reaching the tuyere is temporarily installed in the furnace, and the roller conveyor 22 is installed on the deck 21 through the tuyere 4. The sleepers are transported horizontally into the furnace through the tuyere 4 by the roller conveyor 22, and an operator on the deck 21 fits and hangs the hanging jig 9 to each side end of the sleepers 13. Next, the sleeper 13 is lifted by operating the controller 23 of the electric hoist 5 and lowered to the furnace bottom. During this time, another worker placed at the bottom of the furnace pulls the guide rope 7 to carry the sleeper 13 suspended to a predetermined location, performs a guiding operation to stack the sleepers in a predetermined direction, and after stacking, from the sleepers Remove the hanging jig 9. Thereafter, the same operation is repeated.
[0016]
【The invention's effect】
According to the invention according to claim 1, by operating the hoisting device while pulling the guide rope, even a small number of workers can perform sleeper filling work in the furnace, and the operator needs to carry the sleepers manually. Thus, the labor for filling the sleepers is reduced, and the sleepers can be filled efficiently in a short time.
[0017]
According to the suspension jig of the invention according to claim 2, when the sleeper is lifted, the claw part of the lever comes to bite into the sleeper, so that the sleeper is firmly fixed and can be reliably transported without slipping down during transport. it can.
[Brief description of the drawings]
FIG. 1 is a schematic sectional view of a blast furnace in which an electric hoist is suspended from the top of the furnace.
FIG. 2 is a diagram showing a state where sleepers are lifted by an electric hoist.
FIG. 3 is a view showing another embodiment of a hook on which a suspension ring at the end of a wire rope is hung.
FIG. 4 is a cross-sectional view of a hanging jig.
FIG. 5 is a perspective view of an apparatus used in another method of filling sleepers.
[Explanation of symbols]
1. ・ Blast furnace 2 ・ Ignition manholes 3, 8, 17 ・ Wire rope 4 ・ ・ Feather 5 ・ ・ Electric hoist 6, 19 ・ ・ Hook 7 ・ ・ Guide rope 9 ・ ・ Hanging jig 12 ・ ・ Slit 13 · · Sleepers 14 · · claw 15 · · lever 16 · · pivot point 18 · · suspension ring 21 · · overhang deck 22 · · roller conveyor 23 · · controller

Claims (1)

To prepare for the burning of a newly installed or modified blast furnace, on the lifting hooks of hoisting devices such as chain blocks and hoists attached to the lower ends of wires, ropes, chains, etc. suspended from the top of the furnace or in the vicinity thereof over a separate wire from the above rope, rope, after hanging jig attached to rope end of such chain was attached detachably on sleepers, lift the sleeper by operating the hoisting device, the search Carrying the above-mentioned sleeper that has been lifted by pulling guide ropes such as guide wires, ropes, chains, etc. connected to any part of the strip, hoisting device, lifting hook or suspension jig in the required direction The suspension jig used in the method of filling sleepers into a blast furnace, comprising a jig body having a U-shaped cross section that is fitted to the sleepers from an end surface or from a side surface, and an intermediate portion is pivotally supported by the body. this Is pivotable about the axis point, sleepers, characterized in that has a claw portion for engaging the sleeper, the more the lever connected to rope the other end is hooked on the lifting hook at one end Hanging jig .

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