KR101879249B1 - Apparatus of lifting for repairing a bin - Google Patents

Abstract

In order to secure a safe working position in a hollow of the blast furnace by means of a simple operation, it is possible to secure a working position by rotating and lifting and lowering and to improve the safety and workability of the worker. A base portion which is installed in a state of being in close contact with a space of the liner which has been removed in advance; A lifting unit installed to be rotated and lifted and lowered while being supported by the base unit; And a worktable including a safety deck connected to an upper portion of the lifting unit and a bottom of the work space, and a fence installed at an outer side of the safety deck.

Description

[0001] APPARATUS OF LIFTING FOR REPAIRING A BIN [0002]

Disclosed is a lifting device for internal reinforcement work of a blast furnace.

Generally, the blast furnace is charged with fuel and raw materials to be blasted in the blast furnace at a sintering plant, a coke plant and an auxiliary raw material factory, and then the blast furnace is charged with a certain amount of screening equipment.

In this case, since the long-used empty interior is formed by dropping the ore into the bin specified by the tripper on the transport belt, the wear on the both side liner (refractory) of the slanting middle portion, which is hit directly at a low empty level, .

In addition, when the ore is discharged through the lower gate of the bin in a state filled with ore, the lower side of the upper portion is narrower than the upper portion. The load of the ore filled at the upper level is added to the level, and the wear is more severe, so periodic reinforcement is required.

In this way, wear and tear of the ore at the time of blasting and wear of the ore at the time of discharge are required to periodically replace and reinforce the inner wear-resistant liner.

The liner used for the slope of the bean is made of high-hardness materials such as chrome steel and manganese steel and hard facing material. However, since the construction area is so wide and abrasion phenomenon due to wear of the slope is severe, the liner is light in weight, , The construction by the bar liner is often performed except for the direct impact part.

Conventionally, in order to perform the construction work of the empty inner liner damaged portion, a stepped stool is installed from the bottom to perform the work.

In this case, in order to install the patriarch, the support of the pipe or channel should be welded to the screed portion of the bezel. The liner provided in the bezel is vulnerable to directly supporting the load due to adhesion by bonding or bonding, For this reason, 3 ~ 4 liners are artificially removed in each place, and the support rods are welded to the roving and the roots are installed.

However, in the conventional working method as described above, it takes a long time to prepare the stair-step stall for installation, but it is necessary to artificially remove the unstable liner. After the completion of the construction work, the stall is removed by one step, It takes a considerable amount of work and time to rework.

Also, depending on the situation, the amount of construction of the patriotic installation part may be larger than the amount of construction due to abrasion. In this case, since the additional quantity is larger than the quantity of the work according to the visual estimate, it is difficult to calculate the estimate according to the quantity of the work and the work air is considerably delayed.

In addition, there is a risk of a safety hazard due to a risk of slipping and falling when moving a work path of a complicated stepped stall when the worker enters and exits for a daily work because the work air is long.

There is provided an empty maintenance lifting device which can securely secure a working position through rotation, elevation and descent by a simple operation, and enable a safe construction work in the empty space of the blast furnace to improve the safety and workability of the worker .

The empty maintenance lifting device comprises: a base portion installed in a state of being in close contact with a space selected at least in a hollow; A lifting unit installed to be rotated and lifted and lowered while being supported by the base unit; And a work table connected to an upper portion of the lifting unit to provide a work space.

Wherein the space is provided with a blind hole and the space in which the base portion is closely installed is provided in a space in which the liner has been removed in advance so as to support the device inside the blind bin, A safety deck, and a fence provided outside the safety deck.

And a lower turning part installed between the base part and the lifting part to rotate the lifting part to set the working position of the work table.

The apparatus may further include an upper turning unit installed between the lifting unit and the workbench and capable of setting a working position of the workbench by rotating the workbench at a position opposite to the lower turning unit.

The work table may further include a switch-type operation unit electrically connected to the lifting unit, the lower turning unit, and the upper turning unit for adjusting the position thereof.

The base unit includes a base support which is installed in the horizontal direction and is fixed to the inside of the blast furnace, a connecting rod which is installed to connect the base support to each other, and a bracket which is welded to the end of the base support, And an iron piece to be contacted.

The lifting unit includes a pair of lifting plates connected to the upper and lower portions of the lower turning unit, respectively, and at least one main bellows installed between the lifting plates and stretched and contracted to move the work table up and down. do.

The lifting unit may further include an auxiliary bellows installed at a predetermined distance on one side of the main bellows and connected to a cushion cylinder for lifting and lowering the lifting unit.

The lifting plate has a structure in which an angle adjusting cylinder for adjusting the angle of the main bellows is installed on the upper and lower lifting plates.

The main bellows may further include a lifting cylinder installed under the main bellows to expand and contract the main bellows.

The safety deck may further include a sliding wheel installed at an outer corner of the safety deck so as to rotate in a vertical direction while being in contact with the blast furnace.

The lower pivot portion includes a lower plate connected to a lower portion of the lifting portion and provided with a lower gear at a lower end thereof, a lower cover assembled to the lower gear shaft of the lower plate and assembled to the base portion for rotating the lifting portion, A drive motor assembled to the cover to apply a driving force, and a lower driving unit formed of a pinion.

The lower cover may further include at least one reinforcing plate to be assembled to the base portion.

An upper cover coupled to an upper gear shaft of the upper plate and assembled to a lower portion of a work table to rotate the work table; And a top drive unit including a driving motor and a pinion.

According to this apparatus, it is possible to adjust the inclination in accordance with the inclined blast furnace so that the upper and lower lifting operation can be performed in an angle-adjusted state, so that the working position can be conveniently secured and the blast furnace upper side can be flexibly accessed The work time is shortened and the preparation time is shortened and workability is improved.

In addition, it is possible to prevent a safety accident caused by sliding or falling when approaching a work place.

Fig. 1 is a schematic view showing a lifting and unloading lifting device in this embodiment.
Fig. 2 is a schematic view showing the structure of a blast free maintenance lifting device in this embodiment.
FIG. 3 is a schematic view showing an operating state of the lifting and lowering maintenance lifting apparatus in this embodiment.
4 is an enlarged view of the auxiliary bellows of the lifting device in this embodiment.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms as used herein include plural forms as long as the phrases do not expressly express the opposite meaning thereto. Means that a particular feature, region, integer, step, operation, element and / or component is specified, and that other specific features, regions, integers, steps, operations, elements, components, and / And the like.

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Accordingly, the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Fig. 1 is a schematic view showing a lifting and unloading lifting device in this embodiment.

Fig. 2 is a schematic view showing the structure of a blast free maintenance lifting device in this embodiment.

As shown in FIGS. 1 and 2, the blast free maintenance lifting device is inserted into the blast furnace 1 and is stretched or rotated while being fixed to the lower gate of the bin 1, Refractory) can be built or maintained and maintained.

That is, the blast free maintenance lifting device comprises a base portion 10 installed in a state of being in contact with at least a selected space inside the bin 1; A lifting part 20 installed to be rotated and lifted and lowered while being supported by the base part 10; And a worktable 30 connected to an upper portion of the lifting unit 20 to provide a work space.

The space (1) is provided as a blast furnace, and the space in which the base (10) is closely installed is provided as a space in which the liner has been removed in advance so as to support the apparatus inside the blast furnace The workbench 30 is composed of a safety deck 31 forming the bottom of the work space and a fence 32 installed at the outer periphery of the safety deck 31.

The apparatus may further include a lower turning unit 40 installed between the base unit 10 and the lifting unit 20 and capable of setting the working position of the work table 30 by rotating the lifting unit 20 And an upper swivel part 40 which is installed between the lifting part 20 and the work table 30 and which can set the working position of the work table 30 by rotating the work table 30 at a position facing the lower swivel part 40, (50).

The work table 30 may further include a switch-type operation unit 60 electrically connected to the lifting unit 20, the lower swing unit 40 and the upper swing unit 50 for adjusting the position thereof .

Therefore, the blast free maintenance lifting device includes a base portion 10, a lifting portion 20, a work table 30, a lower pivot portion 40, an upper pivot portion 50, and an operation portion 60 The lifting unit 20 and the work table 30 can be rotated through the lifting unit 20 and the lower turning unit 40 and the upper turning unit 50.

Accordingly, the lifting device is firmly fixed to the bin 1 through the base portion 10 and lifts the work table 30 to the working position via the lifting portion 20, and the lower turning portion 40 And the upper turning part 50. In this state, the worker can carry out the replacement and maintenance work of the liner in the work table 30.

The base unit 10 includes a base support 11 installed in the horizontal direction and fixed to the inside of the blast furnace 1, a linkage 12 installed to connect the base support 11 to each other, And a steel piece 13 which is welded to the end of the burner bin 11 and brought into direct contact with the inside of the blast furnace 1 from which the liner has been removed.

That is, the base support 11 of the base unit 10 is formed on both sides of the base 1 for both the size and the load of the inside of the bin 1, and the base support 10 can be assembled inside the connection unit 12. A portion of the portion contacting the respective inclined surfaces is welded in advance to the iron piece 13 which is in contact with the inclined surface of the bore 1. [ The liner (refractory) which is in contact with the portion to be tightly adhered to the rugged portion of the blank 1 should be removed in advance.

The lifting unit 20 includes a pair of lifting plates 21a and 21b and lifting plates 21a and 21b connected to the upper and lower portions of the upper turn unit 50, And one or more main bellows 22 extending and retracted to move up and down the work table 30.

The lifting unit 20 may further include an auxiliary bellows 24 installed at a predetermined distance on one side of the main bellows 22 and connected to a cushion cylinder 23 for lifting and lowering the lifting unit 20, The main bellows 22 has a structure in which an angle adjusting cylinder 25 for adjusting the angle of the main bellows 22 is installed on each of the upper and lower lifting plates 21a and 21b, And a lifting cylinder 26 installed to extend and retract the main bellows 22.

Therefore, the lifting portion 20 allows the lifting cylinder 26 to be assembled between two main bellows 22, which are installed in parallel among the three bellows, and the cushion cylinder 133 ). The three bellows constructed in this manner are assembled to symmetrical upper and lower lifting plates 21a and 21b. The angle adjusting cylinder 25 is assembled to the lifting plates 21a and 21b on both sides.

The safety deck 31 of the work platform 30 constituting the lifting device further includes a sliding wheel 33 provided at an outer corner of the safety deck 31 and adapted to be rotated in a vertical direction while being in contact with the blast furnace 1 can do.

In other words, a plurality of sliding wheels 33 are assembled to smoothly roll upward and downward in a portion where the safety deck 31 of the work table contacts the inside of the bezel 1, 60 can be operated.

The lower pivot portion 40 is connected to the lower portion of the lifting portion 20 and includes a lower plate 41 provided with a lower gear at the lower end thereof and a lower plate 41 fixed to the lower gear shaft 42 of the lower plate 41 A lower cover 43 assembled to the base 10 to rotate the lifting part 20 and a lower driving part 44 formed of a driving motor and a pinion assembled to the lower cover 43 to apply a driving force, .

The lower cover 43 may further include at least one reinforcing plate 43a to be assembled to the base unit 10 and the lower plate 41 is connected to the lifting unit 20 And is connected to the lower lifting plate 21a.

The lower turn portion 40 assembles the lower cover 43 to the lower gear shaft 42 assembled to the lower plate 41 and tightly fixes the washer ring with a nut so that the lower cover 43 is slidably inserted. Then, in a state in which the drive motor and the pinion are assembled to the lower cover 43, the fastening portion of the lower cover 43 is fixed to the base support 11 and further firmly fixed to the reinforcement plate 43a.

The upper swivel part 50 is assembled to the upper gear shaft 52 of the upper plate 51 with an upper plate 51 connected to the lower part of the work table 30 and having an upper gear at the upper end thereof, An upper cover 53 assembled to the lower portion of the work table 30 to rotate the work table 30 and an upper drive unit 54 formed of a driving motor and a pinion assembled to the upper cover 53 to apply a driving force thereto .

The upper plate 51 is connected to the upper lifting plate 21b of the lifting unit 20 by a connecting pin 27.

Therefore, the upper swivel part 50 is fastened to the upper gear shaft 52 assembled to the upper plate 51 in a symmetrical manner with the lower swivel part 40 by the upper cover 53, the washer ring and the nut, The drive motor and the pinion are assembled.

FIG. 3 is a schematic view showing an operating state of the lifting and lowering maintenance lifting apparatus in this embodiment.

4 is an enlarged view of the auxiliary bellows of the lifting device in this embodiment.

3 and 4, the bracket empty maintenance lifting device includes a lower swing portion 40 on an upper portion thereof in a state where the base support 11 is fixedly welded and connected in a narrow minimum space of a lower vertex shape, The lifting portion 20, the upper swivel portion 50, and the work table 30 are assembled, thereby assembling the apparatus to replace the preparation work of the empty space 1.

Then, the operation position is approached by the operation of the lifting part 20 in a state where the angle is adjusted through the upper and lower turning parts 40 by the operation of the operating part 60.

When the work is completed, it is removed from the work table 30 in the reverse order from the work table 30 to the lower turn portion 40, and after the base 10 is removed, only the lower narrow space including the welded portion is repaired. The work is over.

In this embodiment, the base support 11 of the base portion 10 serves to support the load of the entire device installed on the upper portion. In consideration of the entry / exit load and the installation work in the narrow empty space 1, The contact portions of the fabricated base support 11 are tightly fixed by the iron pieces 13 attached to the slope of the bezel and are connected to each other by the connecting block 12 to sufficiently rest on the upper dynamic load.

In addition, the lower turning portion 40 acts to transmit the rotational force of the driving motor and the pinion fixed to the lower cover 43 to the lower gear shaft 42 so that the lower plate 41 can be turned. This serves to pivot the surface to be reinforced in such a way that the tightness of the device is suitable.

The height of the lifting part 20 is controlled by the expansion and contraction of the three bellows and the distance between the two lifting plates 21a and 21b is increased. The main bellows 22 is contracted and expanded by the action of the lifting cylinder 26 installed at the bellows connection link connecting the main bellows 22 to the main bellows 22.

The lifting unit 20 may further include an auxiliary bellows 24 installed at a predetermined distance on one side of the main bellows 22 and connected to a cushion cylinder 23 for raising and lowering the lifting unit 20, (23) is actuated by the drive motor (28).

However, since it is a safety device, one side is fixed and the other side is sliding type in a normal bellows configuration. Therefore, there is a fear of abrasion and damage due to heavy sliding action due to the movement of the upper worker during long- The auxiliary bellows 24 is formed at right angles to the sliding side of the seat cushion 22 and the cushion cylinder 23 functions to reduce the burden on the ballast during stopping.

At this time, the cushion cylinder 23 is operated in a self-circulating state at the same time when the lifting cylinder 26 is operated. When the lifting cylinder 26 is stopped, the operation of the bellows is fixed Thereby providing a safeguard against lifting.

The angle adjusting cylinder 25 adjusts the distance between the lifting plates 21a and 21b and the upper or lower plate 41 so that the height of the lifting unit 20 at the lower portion is equal to the angle of inclination The angle of the symmetrical shape is reversely adjusted at the upper portion when the tilting is performed so that the safety deck 31 of the work table 30, which the operator is on board, can always maintain the horizontal position.

The upper swivel part 50 is rotated by the driving motor fixed to the upper cover 53 and the rotation of the pinion is transmitted to the upper gear shaft 52 so that the safety deck 31 of the work table 30 including the upper cover 53 ) To be able to turn. It acts to adjust it to be parallel to the reinforcement surface by the correcting action according to the turning of the lower part.

Therefore, it is possible to complete the preparatory work by the lifting device for blast furnace maintenance installed in the lower minimum space and to perform the lifting after turning operation and angle adjustment for the work position without requiring additional liner removal and chief (stair) So that it can be operated.

While the illustrative embodiments of the present invention have been shown and described, various modifications and alternative embodiments may be made by those skilled in the art. Such variations and other embodiments will be considered and included in the appended claims, all without departing from the true spirit and scope of the invention.

1: blank 10: base portion
11: Base support 12: Connecting rod
13: iron piece 20: lifting part
21a: Lower lifting plate 21b: Upper lifting plate
22: Main bellows 23: Cushion cylinder
24: Auxiliary bellows 25: Angle adjusting cylinder
26: lifting cylinder 27: connecting pin
28: drive motor 30: work table
31: Safety deck 32: Fence
33: Sliding wheel 40: Lower turning part
41: lower plate 42: lower gear shaft
43: lower cover 43a: reinforcing plate
44: Lower driving part 50: Upper turning part
51: upper plate 52: upper gear shaft
53: upper cover 54: upper driver

Claims (14)

A base portion installed in a state of being in close contact with a space selected at least in a hollow;
A lifting unit installed to be rotated and lifted and lowered while being supported by the base unit; And
And a worktable connected to an upper portion of the lifting unit to provide a work space,
Further comprising a lower pivot portion provided between the base portion and the lifting portion and capable of setting a working position of the work table by rotating the lifting portion,
Further comprising an upper swivel part installed between the lifting part and the workbench and capable of setting the working position of the workbench by rotating the workbench at a position opposite to the lower swivel part,
The lifting unit includes a pair of lifting plates connected to the upper and lower portions of the upper turning unit, respectively, and at least one main bellows installed between the lifting plates and stretched and contracted to move up and down the work table. Maintenance lifting device. The method according to claim 1,
The bin is provided with a blast furnace,
Wherein the space in which the base portion is closely installed is provided in a space in which the liner has been removed in advance so as to support the device in the inside of the blast furnace bin,
Wherein the work table comprises a safety deck that forms the bottom of the work space and a fence that is provided on the outer side of the safety deck. delete delete The method according to claim 1,
Wherein the work table further comprises a switch-type operating portion electrically connected to the lifting portion, the lower turning portion and the upper turning portion for adjusting the position thereof. The method according to claim 1,
The base portion includes a base support which is installed in the lateral direction and fixed to the inside of the hollow portion, a connecting rod which is installed to connect the base support to each other, and a contact portion which is welded to the end portion of the base support, Wherein the lifting device comprises: delete The method according to claim 1,
Wherein the lifting unit further comprises an auxiliary bellows installed at one side of the main bellows at a predetermined interval and connected to a cushion cylinder for lifting and lowering the lifting unit. The method according to claim 1,
Wherein the lifting plate is provided with an upper lifting plate installed on an upper part of the lifting part and an angle adjusting cylinder for adjusting an angle of the main bellows on a lower lifting plate installed on a lower part of the lifting part. The method according to claim 1,
Wherein the main bellows further includes a lifting cylinder installed at a lower portion of the main bellows to expand and contract the main bellows. 3. The method of claim 2,
Wherein the safety deck further comprises a sliding wheel installed at an outer corner of the safety deck so as to be rotated in a vertical direction while being in contact with the blast furnace bin. The method according to claim 1,
The lower pivot portion includes a lower plate connected to a lower portion of the lifting portion and provided with a lower gear at a lower end thereof, a lower cover assembled to the lower gear shaft of the lower plate and assembled to the base portion for rotating the lifting portion, A drive motor assembled to the cover and applying a driving force thereto, and a lower driving unit formed of a pinion. 13. The method of claim 12,
Wherein the lower cover further comprises at least one reinforcing plate to be assembled to the base portion. The method according to claim 1,
An upper cover coupled to an upper gear shaft of the upper plate and assembled to a lower portion of a work table for rotating the work table; And a top drive unit including a drive motor and a pinion assembled to the drive shaft to apply a drive force.

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