阅读说明：本技术 高炉布料器动臂托架、高炉布料器组件及高炉布料器 (Movable arm bracket of blast furnace distributor, blast furnace distributor assembly and blast furnace distributor ) 是由 周卓林 樊统云 张建东 邱建红 于 2021-11-03 设计创作，主要内容包括：本发明提供了一种高炉布料器动臂托架其包括平直式动臂及长矩形托架,所述平直式动臂设置有两个,两所述平直式动臂相互间隔设置；所述长矩形托架通过楔块锁紧装置与所述平直式动臂锁紧相连,且位于两所述平直式动臂之间；其中,所述长矩形托架上开设有用以安装布料溜槽的安装缺口,所述安装缺口自所述长矩形托架的顶面凹陷形成。同时本发明还提供了一种高炉布料器,其包括高炉布料器组件,所述高炉布料器组件包括所述高炉布料器动臂托架。与现有技术相比,本发明提供的高炉布料器动臂托架、高炉布料器组件及高炉布料器中所述高炉布料器动臂托架不容易发生形变,从而能有效保障布料溜槽正常布料,保障高炉稳定运行。(The invention provides a movable arm bracket of a blast furnace distributor, which comprises two straight movable arms and a long rectangular bracket, wherein the two straight movable arms are arranged at intervals; the long rectangular bracket is connected with the straight movable arms in a locking way through a wedge block locking device and is positioned between the two straight movable arms; the long rectangular bracket is provided with an installation notch for installing a distribution chute, and the installation notch is formed by sinking the top surface of the long rectangular bracket. The invention also provides a blast furnace distributor which comprises a blast furnace distributor component, wherein the blast furnace distributor component comprises a movable arm bracket of the blast furnace distributor. Compared with the prior art, the movable arm bracket of the blast furnace distributor, the blast furnace distributor component and the blast furnace distributor provided by the invention have the advantages that the movable arm bracket of the blast furnace distributor is not easy to deform, so that normal distribution of a distribution chute can be effectively ensured, and the stable operation of a blast furnace is ensured.)

1. A movable arm bracket of a blast furnace distributor is characterized by comprising:

the two straight movable arms are arranged at intervals;

the long rectangular bracket is connected with the straight movable arms in a locking way through a wedge block locking device and is positioned between the two straight movable arms;

the long rectangular bracket is provided with an installation notch for installing a distribution chute, and the installation notch is formed by sinking the top surface of the long rectangular bracket.

2. The blast furnace distributor boom bracket of claim 1, wherein said wedge locking device is an upper tapered wedge structure or a bottom flat wedge structure.

3. The blast furnace distributor boom bracket of claim 1, wherein said mounting notch is a flared trapezoidal configuration.

4. The blast furnace distributor boom bracket of claim 1, wherein said mounting notch is a circular arc configuration.

5. The blast furnace distributor boom bracket of claim 1, further comprising:

and the burning-proof armor is arranged on the straight movable arm and is positioned below the long rectangular bracket.

6. The blast furnace distributor boom bracket of claim 5, wherein said burn armour comprises two armour units correspondingly mounted on two of said flat booms, respectively, said armour units comprising a fixed end mounted to said flat boom by screws and a movable end facing the other of said armour units.

7. A blast furnace distributor assembly, comprising:

the blast furnace distributor boom bracket of any of claims 1 to 6;

and the distribution chute is arranged at the mounting notch.

8. The blast furnace distributor assembly of claim 7, wherein there are two of said distribution chute fulcrums in said mounting gap, said fulcrums being located on said mounting gap adjacent both sides of said two flat arms.

9. A blast furnace distributor comprising a blast furnace distributor assembly as claimed in claim 7 or 8.

Technical Field

The invention relates to the technical field of blast furnace distribution, in particular to a movable arm bracket of a blast furnace distributor and the blast furnace distributor.

Background

A blast furnace is a main facility for iron and steel smelting, and iron ore, coke, and a flux (limestone) for slag formation are charged from the top of the blast furnace during production, and preheated air is blown from tuyeres located along the periphery of the furnace at the lower part of the furnace. Carbon in coke (some blast furnaces also blow auxiliary fuel such as coal dust, heavy oil, natural gas and the like) at high temperature is combusted with oxygen blown into air to generate carbon monoxide and hydrogen, and oxygen in iron ore is removed in the ascending process in the furnaces, so that iron is obtained by reduction.

The blast furnace distributor is the main distributing equipment on the blast furnace, is arranged at the top in the blast furnace and is the core equipment for blast furnace smelting. Through installing the distribution chute in the movable arm bracket among the blast furnace distributing device to different accurate angles carry out the cloth to the stove, the repeated stable uniformity of angle in the production use requires highly, and general angle change can not be greater than 2 degrees. Since the deformation of each member of the boom bracket changes the angle, the deformation that affects the change of the angle is highly required. The working condition temperature of the movable arm bracket is generally 400-600 deg.C, the deformation of the existent movable arm bracket can be basically retained in the required range, but when the working condition temperature is above 600 deg.C, even can be up to 800-1000 deg.C or higher, the movable arm bracket can be easily deformed.

As shown in fig. 1 to 4, in the conventional art, a distribution chute 1 is attached to a boom bracket 2, and the distribution chute 1 is supported by a bracket 3 on the boom bracket 2. The movable arm bracket 2 is acted on the movable arm bracket 2 under the gravity action of several tons of the distribution chute 1 arranged on the movable arm bracket 2 and the impact transmission of raw materials to the distribution chute 1 when the distribution chute 1 receives materials, so that the movable arm bracket 2 is gradually lengthened at high temperature, in addition, the bracket 3 on the movable arm bracket 2 is bent downwards at high temperature, the movable arm bracket 2 is integrally lengthened downwards, the positions of the distribution chute 1 are moved downwards by the two factors, the distribution angle of the distribution chute 1 is changed, the deformation of the movable arm bracket 2 causes the angle of the distribution chute 1 to be reduced by more than 2 degrees or even up to 10 degrees, the repeated stability of the angle exceeds the range and also exceeds the angle adjusting range used by the distribution chute 1, the stable and smooth operation of a blast furnace is seriously influenced, and even the blast furnace cannot be produced and is forced to be shut down to replace a distributor.

Disclosure of Invention

The technical problem that the movable arm bracket of the blast furnace distributing device in the prior art is easy to deform under the stress at high temperature, so that the distributing chute cannot distribute materials normally and the operation of a blast furnace is influenced is solved. The movable arm bracket of the blast furnace distributing device provided by the invention is not easy to deform, so that normal distribution of a distribution chute can be effectively ensured, and stable operation of a blast furnace is ensured.

A blast furnace distributor boom bracket, it includes:

the two straight movable arms are arranged at intervals;

the long rectangular bracket is connected with the straight movable arms in a locking way through a wedge block locking device and is positioned between the two straight movable arms;

the long rectangular bracket is provided with an installation notch for installing a distribution chute, and the installation notch is formed by sinking the top surface of the long rectangular bracket.

Preferably, the wedge locking device is an upper inclined wedge structure or a bottom flat wedge structure.

Preferably, the installation notch is of an open-mouthed trapezoidal structure.

Preferably, the mounting notch is of a circular arc structure.

Preferably, the method further comprises the following steps:

and the burning-proof armor is arranged on the straight movable arm and is positioned below the long rectangular bracket.

Preferably, the burning-resistant armor comprises two armor units, the two armor units are respectively and correspondingly installed on the two straight movable arms, and the armor unit comprises a fixed end and a movable end, which are installed on the straight movable arms through screws, and the fixed end faces the other movable end of the armor unit.

A blast furnace distributor assembly, comprising:

a blast furnace distributor boom bracket as defined in any one of the above;

and the distribution chute is arranged at the mounting notch.

Preferably, two supporting points of the distribution chute on the installation notch are arranged, and the two supporting points are located on the installation notch and close to two sides of the two straight movable arms.

A blast furnace distributor including a blast furnace distributor assembly as claimed in any one of the preceding claims.

Compared with the prior art, the movable arm bracket of the blast furnace distributor comprises two straight movable arms and a long rectangular bracket, wherein the two straight movable arms are arranged at intervals; the long rectangular bracket is connected with the straight movable arms in a locking way through a wedge block locking device and is positioned between the two straight movable arms; the long rectangular bracket is provided with an installation notch for installing a distribution chute, and the installation notch is formed by sinking the top surface of the long rectangular bracket. Therefore, the movable arm bracket of the blast furnace distributing device is not easy to be heated and deformed in the distributing use process, the normal distribution of the distributing chute is effectively ensured, and the stable operation of the blast furnace is ensured.

Drawings

In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic perspective view of a distribution chute and a boom bracket according to the prior art;

FIG. 2 is a schematic view of a prior art arrangement of an angle of a distribution chute and a boom bracket;

FIG. 3 is a schematic view of an alternative angle configuration of a distribution chute and boom bracket of the prior art;

FIG. 4 is a schematic cross-sectional view taken along line B-B of FIG. 3;

FIG. 5 is a schematic perspective view of a distribution chute and a boom bracket according to an embodiment;

FIG. 6 is a schematic view of an angle of the distribution chute and boom bracket of FIG. 5;

FIG. 7 is a schematic view of an alternate angle configuration of the distribution chute and boom bracket of FIG. 5;

FIG. 8 is a schematic cross-sectional view taken along line C-C of FIG. 7;

FIG. 9 is a schematic illustration of the boom bracket of FIG. 5;

FIG. 10 is a schematic view of an alternate angle of the boom bracket of FIG. 9;

FIG. 11 is a schematic cross-sectional view of one embodiment along line D-D of FIG. 10;

FIG. 12 is a schematic cross-sectional view of another embodiment taken along line D-D of FIG. 10;

FIG. 13 is a schematic structural diagram of a boom bracket according to an embodiment

FIG. 14 is a schematic illustration of a preferred embodiment of the boom bracket of FIG. 5;

fig. 15 is a force analysis diagram of the distribution chute and the boom bracket shown in fig. 5.

Detailed Description

In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or be indirectly disposed on the other element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the practical limit conditions of the present application, so that the modifications of the structures, the changes of the ratio relationships, or the adjustment of the sizes, do not have the technical essence, and the modifications, the changes of the ratio relationships, or the adjustment of the sizes, are all within the scope of the technical contents disclosed in the present application without affecting the efficacy and the achievable purpose of the present application.

The invention provides a movable arm bracket of a blast furnace distributor, which comprises two straight movable arms and a long rectangular bracket, wherein the two straight movable arms are arranged at intervals; the long rectangular bracket is connected with the straight movable arms in a locking way through a wedge block locking device and is positioned between the two straight movable arms; the long rectangular bracket is provided with an installation notch for installing a distribution chute, and the installation notch is formed by sinking the top surface of the long rectangular bracket. The movable arm bracket of the blast furnace distributing device is not easy to deform, so that normal distribution of a distribution chute can be effectively guaranteed, and stable operation of a blast furnace is guaranteed.

The movable arm bracket of the blast furnace distributing device is a connecting part used for installing a distribution chute on the blast furnace distributing device, and is mainly used for solving the technical problem that the movable arm bracket in the prior art is easy to deform under the stress at high temperature to influence the normal distribution of the distribution chute.

In order to solve the difficult problem of deformation of a movable arm bracket in the prior art, some blast furnace distributing devices adopt a mode without the movable arm bracket. The movable arm function is directly moved to the distribution chute, the movable arm is replaced when the distribution chute is replaced, the movable arm is replaced normally, the influence on production cannot be caused by accumulated deformation, however, the replacement difficulty of the distribution chute with the movable arm is high, the cost is long, the hole alignment is required under a complex environment when the distribution chute is installed, when the distribution chute is detached, if the movable arm on the distribution chute is deformed and blocked, the movable arm is cut by people in a furnace, the movable arm is dangerous and long in time, the movable arm is greatly limited, and the problem is greatly solved in the market application process.

Please refer to fig. 5-9. The embodiment provides a movable arm bracket 100 of a blast furnace distributor, in particular to a hook-type movable arm bracket, wherein the movable arm bracket 100 of the blast furnace distributor comprises a straight movable arm 10 and a long rectangular bracket 20. Meanwhile, the embodiment also provides a blast furnace distributor assembly 1000, which comprises the blast furnace distributor movable arm bracket 100 and a distribution chute 200 installed on the blast furnace distributor movable arm bracket 100. The blast furnace distributing device movable arm bracket 100 is used for installing the distributing chute 200, a hook on the distributing chute 200 is hung on a cross beam (the long rectangular bracket 20) of the blast furnace distributing device movable arm bracket 100, a pressing block above the blast furnace distributing device movable arm bracket 100 presses the upper edge of the distributing chute 200 to form a lever, the gravity center is in a reverse position, and the distributing chute 200 is installed on the blast furnace distributing device movable arm bracket 100.

Two straight movable arms 10 are provided, and the two straight movable arms 10 are arranged at intervals. Wherein the straight boom 10 refers to: the movable arm 10 has a straight line structure as a whole, and has no arc-shaped segment structure at a lower end. It can be understood that, as shown in fig. 1, the lower end of the boom 4 in the boom bracket 2 in the prior art is the arc-shaped segment structure 5 close to the distribution chute 1, so that when the boom bracket is used in a high-temperature environment, the arc-shaped segment structure 5 at the lower end of the boom 4 is easily straightened and lengthened, and is easily deformed. In the embodiment, the movable arm 10 is set to be the straight movable arm 10, so that an arc-shaped section structure in the prior art is eliminated, and deformation of the movable arm 10 is better avoided.

The long rectangular bracket 20 is mounted to the straight boom 10, and the long rectangular bracket 20 is located between the two straight booms 10. Wherein the long rectangular bracket 20 refers to: the carrier 20 is of a cuboid structure overall, while the length in the height direction can be longer compared to the carrier 3 of the prior art, so that the distribution chute 200 can be located in a higher region.

The long rectangular bracket 20 is provided with an installation notch 21 for installing the distribution chute 200, and the installation notch 21 is formed by sinking from the top surface of the long rectangular bracket 20. In the blast furnace distributing device boom bracket 100 provided by this embodiment, the long rectangular bracket 20 is adopted to support the distribution chute 200, so that the force bearing point for supporting the distribution chute 200 can move up, and the basic size of the distribution chute can be lengthened to be shortened. Meanwhile, a relatively high temperature area at the lower part of the movable arm bracket 100 of the blast furnace distributor is avoided, the influence of the part which is easy to lengthen at the lower part of the movable arm is completely eliminated, the lengthening influence of the movable arm at the side only leaves the relatively low temperature part at the upper part, and when the length is short and the temperature is relatively low, the lengthening influence of the movable arm can be reduced to the allowable range. And the installation of the distribution chute 200 through the installation notch 21 can better balance the stress between the long rectangular bracket 20 and the distribution chute 200, and better avoid the occurrence of deformation.

It can be understood that the main factors that the boom bracket in the prior art is easy to lengthen under high temperature stress condition, and the arc section is easy to lengthen under strong force and impact load condition due to high temperature at the lower part of the boom. In the blast furnace distributor boom bracket 100 provided by the embodiment, the upward and downward tension of the bracket is transmitted to the upper part stressed force through friction force, so that the stressed length of the boom is shortened, and the upper part is a relatively low-temperature area and also a difficult-to-lengthen area. The stress point of the movable arm which is pulled downwards is moved upwards, the stressed length is shortened, the stress of the part which is easy to lengthen at the lower part of the movable arm is reduced or basically not stressed, and the movable arm bracket 100 of the blast furnace distributor is prevented from being lengthened better.

Please refer to fig. 10. Preferably, the long rectangular bracket 20 is lockingly coupled to the flat boom 10 by a wedge locking device 30. Specifically, the long rectangular bracket 20 is connected with the straight movable arm 10 in an interference locking manner through a wedge locking device 30. It can be understood that the bracket 3 and the movable arm 4 in the prior art are assembled by adopting a forged piece, and screws and welding seams of the assembly parts are easy to damage and fail under the heat stress at high temperature. In the embodiment, the wedge locking device 30 is adopted to lock and connect the long rectangular bracket 20 and the straight movable arm 10, so that the connection of a bolt and a welding seam of a main stress part is eliminated, and the safety and the reliability are realized. And the processing and manufacturing of each part are also facilitated by adopting the mode that the wedge locking device 30 is connected in a locking manner.

Please refer to fig. 11 and fig. 12 in combination. Preferably, the wedge locking device 30 is an upper wedge structure or a lower flat wedge structure.

Preferably, in an embodiment, the long rectangular bracket 20 and the flat boom 10 are cast as a single structure.

Please continue to refer to fig. 9. Preferably, the installation notch 21 is of an open-mouthed trapezoidal structure. Namely, the cross section of the installation notch 21 is of a trapezoidal structure expanding outwards, so that the distribution chute 200 can be better supported. Specifically, the mounting notch 21 includes a bottom surface 211 and side surfaces 212 extending from both ends of the bottom surface 211 to the outside in a bent manner, and the distribution chute 200 abuts against the side surfaces 212.

Please refer to fig. 13. Preferably, the mounting notch 21 has a circular arc structure.

Please refer to FIG. 14. Preferably, the blast furnace distributor boom bracket 100 further comprises a burning-prevention armor 40, and the burning-prevention armor 40 is installed on the straight boom 10 and located below the long rectangular bracket 20. Thereby through prevent that burning armour 40 can be better avoid long rectangle bracket 20 burns out, further avoided blast furnace distributing device swing arm bracket 100 takes place deformation.

Preferably, the burning-resistant armor 40 includes two armor units 41, and the two armor units 41 are respectively and correspondingly installed on the two straight type movable arms 10, that is, one armor unit 41 is correspondingly installed on each straight type movable arm 10. The armor unit 41 includes a fixed end 411 attached to the flat boom 10 by a screw and a movable end 412 facing the other armor unit 41. It can be understood that in the prior art, part of the boom brackets are provided with the burning-resistant armor, but in the prior art, the burning-resistant armor and the boom are of an integral structure, the material of the armor is consistent with that of the boom, the selection of the material of the armor is limited, and the burning-resistant armor cannot be replaced independently, so that the burning-resistant armor needs to be replaced together with the boom after being burnt out. In the embodiment, the burning-proof armor 40 is an independent piece which can be replaced, and is divided into two parts which are respectively fixed by unilateral screws, the screws are only subjected to the gravity of the armor body, and the other ends of the screws are not limited, so that the situations that the solid screws are broken by being fixed at the two ends of a high-temperature area and the screws are cracked in a limited way due to the change of heating are avoided.

In blast furnace distributing device subassembly 1000 the distribution chute 200 specifically install in installation breach 21 department, thereby lets better bearing of blast furnace distributing device swing arm bracket 100 the distribution chute 200, pressure is too concentrated when avoiding the bearing.

Please refer to fig. 15. Preferably, two supporting points 210 of the distribution chute 200 on the installation notch 21 are provided, and the two supporting points 210 are located on the installation notch 21 near two sides of the two straight movable arms 10. I.e. the mounting indentation 21 is formed to fit the outer surface of the distribution chute 200 such that the fulcrum 210 supporting the distribution chute 200 is located at the upper part of the mounting indentation 21. It can be understood that the fulcrum of the distribution chute in the prior art is located at the center of the bracket, and the distribution chute presses down the center of the bracket, so that the downward pressure F of the distribution chute is concentrated at the middle part of the bracket, the bracket is very easy to deform downwards from the middle part, the movable arms at two sides are clamped when the bracket deforms, the chute is clamped, and the subsequent disassembly is difficult. In this embodiment, the fulcrum 210 of the distribution chute 200 is on both sides of the upper portion of the installation notch 21, and the force components F1 and F2, F1 and F2, which are respectively F, have horizontal force components on both sides, so that the long rectangular bracket 20 is stressed by downward pressure and tension instead of clamping the two straight movable arms 10, the deformation force of the distribution chute 200 being clamped is eliminated, and the problem of difficulty in disassembling due to the clamping of the chute is fundamentally solved.

In the boom bracket, the non-hook type boom is integrated with the distribution chute, and the upper portion thereof is integrated with the distribution chute or is fastened to the distribution chute, so that the variable length section is short, and the problem of the boom becoming long and failing under high temperature and load is solved. In the large-scale hook type blast furnace distribution chute in the industry, a movable arm is integrated with a distributor, and hooks are stressed at the bottom, so that the problem that the hooks are lengthened under high-temperature and heavy-load loads and the problem that the industry cannot solve are solved. Therefore, the industry is in a dilemma, if the deformation failure problem of the movable arm bracket of the hook type distribution chute under high-temperature heavy load can be effectively solved, the bottleneck problem of the industry is solved satisfactorily, the problem restricts numerous professional companies and design houses, the structure of the application is seemingly simple, the window penetrating effect exists, and the problem is actually confused by the industry for decades.

The blast furnace distributing device assembly provided by the invention solves the industrial problems that the distribution chute distribution angle stability is poor and the distribution angle is reduced and exceeds the adjustment range due to the fact that the movable arm bracket on the blast furnace distributing device is lengthened under the high-temperature working condition, so that the iron-making production is seriously influenced, and can solve the problems that the movable arm bracket and the distribution chute are blocked and burnt and lose failure. Specifically, in the blast furnace distributor component, the stress point of a movable arm bracket of the blast furnace distributor moves upwards to shorten the length-variable basic size, a relatively high temperature area of the lower part is avoided, the influence of the length-variable part of the lower part of the original movable arm is completely eliminated, the length-variable influence of the movable arm on the side surface only leaves the relatively low temperature part of the upper section, and when the length is short and the temperature is relatively low, the length-variable influence of the movable arm can be reduced to the allowable range. The central pivot of the distribution chute and the central pivot of the bracket are divided into 2 pivots, the movable arms on two sides are close to each other, the bracket is difficult to bend downwards, the two pivots of the distribution chute are arranged at the upper parts of two sides of the notch of the rectangular notch beam, the movable arms on two sides are close to each other, the pivots are close to each other, the larger the section is, the more difficult the pivots are, and the problem that the bracket bends downwards and becomes long is solved. Meanwhile, the horizontal bending part of the movable arm is replaced by a mode of opening a notch on the cabinet-shaped bracket, and the movable arm bracket is lengthened downwards, so that the influence can be effectively treated. The arc sections of the two movable arms in the horizontal direction are eliminated, a bracket of a movable arm bracket is changed into a rectangular opening trapezoid notch bracket or a rectangular arc notch bracket, the bracket and the movable arms are locked in an interference mode through wedge blocks, the part, pulled downwards, of the movable arm rises to the upper portion of a cabinet-shaped notch beam through friction force, the length of the pulled movable arm is shorter than that of an original material distribution chute pressed at the bottom of the center of the bracket, the temperature of the original pulled lower portion is higher than that of the upper portion, the lower portion, which is easy to lengthen, is eliminated, and one of lengthening problem factors is solved.

Compared with the prior art, the movable arm bracket of the blast furnace distributor comprises two straight movable arms and a long rectangular bracket, wherein the two straight movable arms are arranged at intervals; the long rectangular bracket is connected with the straight movable arms in a locking way through a wedge block locking device and is positioned between the two straight movable arms; the long rectangular bracket is provided with an installation notch for installing a distribution chute, and the installation notch is formed by sinking the top surface of the long rectangular bracket. Therefore, the movable arm bracket of the blast furnace distributing device is not easy to be heated and deformed in the distributing use process, the normal distribution of the distributing chute is effectively ensured, and the stable operation of the blast furnace is ensured.

While the foregoing is directed to embodiments of the present invention, it will be understood by those skilled in the art that various changes may be made without departing from the spirit and scope of the invention.