KR100840240B1 - A sintering trailer - Google Patents

Abstract

The present invention relates to a sintered bogie with an extension. To this end, the sintered bogie of the present invention includes a bogie body including a body member through which air is sucked downward, and side members fixed to both sides of the body member, sidewalls mounted on each side member, and the bogie. A plurality of heat insulating members mounted side by side on the body, and a plurality of grate mounted side by side on the heat insulating member. At this time, the side member includes a side portion close to both sides of the body member, and the extension portion bent at the upper end of the side portion extending in the outward direction of the body member, the insulating member is mounted spaced apart from each other on the extension portion And a first heat insulating member, a plurality of second heat insulating members disposed side by side between the first heat insulating members on the body member, and a third heat insulating member mounted between the first heat insulating members on the extension portion.

Sintered bogie, extension, integral, grate

Description

Sintered Balance {A SINTERING TRAILER}

1 is a partial perspective view of a sintered cart according to an embodiment of the present invention.

FIG. 2A is a perspective view illustrating a bogie body of a sintered bogie according to an embodiment of the present invention, and FIG. 2B is a cross-sectional view taken along the line II-II of FIG. 2A.

3 is a perspective view illustrating a first heat insulating member according to an embodiment of the present invention.

4 is a perspective view illustrating a second heat insulating member according to an embodiment of the present invention.

5 is a perspective view illustrating a third heat insulating member according to an embodiment of the present invention.

6 is a perspective view illustrating a first grate according to an embodiment of the present invention.

FIG. 7 is a cross-sectional view taken along the line II of FIG. 1. FIG.

8 is a cross-sectional view schematically showing a sintered truck according to Comparative Example 1. FIG.

9 is a sectional view schematically showing a sintered truck according to Comparative Example 2. FIG.

10 is a cross-sectional view schematically showing a sintered truck according to Comparative Example 3. FIG.

11A is a view showing a gas flow of the sintered trolley according to the experimental example.

11B is a view showing a gas flow of the sinter bogie according to Comparative Example 1. FIG.

12 is a view schematically showing a general sintering process.

13 is a schematic cross-sectional view showing a sintered truck according to the prior art.

The present invention relates to a sintered bogie used in a sintering process for sintering iron ore, and more particularly, to a sintered bogie having an extension.

The steel industry is a key industry that supplies basic materials to the entire industry, including automobiles, shipbuilding, home appliances, and construction. As a method generally used in the steelmaking process, there is a blast furnace method for producing pig iron by charging a material such as iron ore and coke into the furnace and injecting a gas such as oxygen.

When the iron ore in the powder form is used in the blast furnace method, gas flow may not be smooth, which may cause problems such as poor yellowing and reduction of the emission amount. Therefore, in the blast furnace method, the iron ore in powder form is sintered and manufactured in the form of sintered ore, and this sintered ore is used in a steelmaking process.

12 is a view schematically showing a sintering machine for the sintering process. The sintering machine shown in FIG. 12 is a sintering machine in the form of up draft Dwight Lloyid (hereinafter, referred to as 'DL') commonly used to sinter iron ore in powder form.

In the raw material storage tank 11, sintered raw materials such as powdered iron ore, secondary raw materials, powdered coke for fuel, water, etc. are transferred to the mixer 12, and the mixer 12 mixes these sintered raw materials, and the charging chute 13 The mixed sintered raw materials are charged into the sintered trolley 20 which moves on an endless track.

The igniter 30 ignites the upper portion of the sintered raw material filled in the sintered trolley 20, and the air suction unit 40 and the blower (not shown) connected to the lower portion of the sintered trolley 30 suck the air downward to sinter the raw material. Fire continuously. A sintered ore is manufactured by baking a sintering raw material with the heat | fever generated by combustion, a reducing gas, etc.

The sintered trolley 20 which has completed sintering discharges the sintered ore to the light distribution part (not shown), and the sintered trolley 20 moves to the lower position of the charging chute 13 to repeat the sintering process.

At this time, the quality of the sintered ore is excellent as the combustion of the sintered raw material actively occurs. Therefore, by sintering ore of good quality can be produced by increasing the amount of gas required for the combustion of the sintered raw material.

13 is a schematic cross-sectional view showing a sintered truck according to the prior art. The conventional sintered trolley | bogie consists of the main body 21, the grate 23, the head part 25, the side wall 27, and the traveling wheel 29. As shown in FIG.

The grate 23 is formed on the upper portion of the main body 21 is formed with a through hole (23a) through which air necessary for sintering can pass. The head portion 25 is located on both sides of the main body 21. The side wall 27 is mounted at the upper end of the head portion 25. The driving wheels 29 for moving the sintered trolleys are mounted to both lower portions of the head portion 25. The sintered raw material 50 is located on the grate 23 and filled to the height of the side wall 27.

By the way, the conventional sintered trolley is assembled after casting the main body 21 and the head part 25 separately. Therefore, in the process of continuously burning the sintered raw material 50 by sucking air downward in the sintering process, a leak may occur in a gap between the main body 21 and the head portion 25. The leakage of the air increases as the operation progresses and the amount between the main body 21 and the head portion 25 is further increased.

And when the sintered raw material 50 is charged to the sintered trolley, the airflow resistance is reduced in the vicinity of the side wall 27 because particles having a larger particle size are located on the side wall 27. Then, when the sintering reaction proceeds, moisture in the sintering raw material 50 evaporates, and accordingly, the volume of the sintering raw material 50 decreases due to ignition loss, so that the sidewall 27 and the sintering raw material ( 50) There is a gap between them. In other words, a strong air flow between the sintered raw material 50 and the sidewalls 27 of the sintered trolley can be generated.

Due to the leak and wind (W) may cause a problem that the quality and productivity of the sintered ore decreases.

On the other hand, since the sintering process is a process occurring at a very high temperature, the insulation plate (not shown) that is located under the grate 23 to prevent the sintering cart is deformed may be aged or worn. In the related art, a work such as dismantling the sidewalls is required for the replacement of the heat insulating plate (not shown), which takes a long time and risks a safety accident.

The present invention is to solve the above problems, to provide an sintered trolley that can increase the effective amount of air in the sintered trolley to improve the productivity and quality of the sintered ore, and can easily replace the heat insulating member.

The sintered trolley of the present invention for achieving the above object is a bogie body including a body member to which air is sucked downward, and side members fixed to both sides of the body member, mounted on each side member. And a side wall, a plurality of heat insulating members mounted side by side on the bogie body, and a plurality of grate mounted side by side on the heat insulating member. At this time, the side member includes a side portion close to both sides of the body member, and the extension portion bent at the upper end of the side portion extending in the outward direction of the body member, the insulating member is mounted spaced apart from each other on the extension portion And a first heat insulating member, a plurality of second heat insulating members disposed side by side between the first heat insulating members on the body member, and a third heat insulating member mounted between the first heat insulating members on the extension portion.

The width of the first heat insulating member may be greater than the width of the second heat insulating member.

The third heat insulating member may be concavely recessed on its upper and lower surfaces, and the third heat insulating member may be fastened and bolted onto the extension part.

The first heat insulating member may be mounted on the extension while forming an inner space thereunder.

At least one of the first heat insulating member and the second heat insulating member is mounted on the balance body and includes a plurality of rails spaced apart from each other, and the rail extends and is mounted to the expansion portion, and the first rail. The second rail may include a second rail mounted to be spaced apart from and shorter than a length of the first rail.

At least one of the first heat insulating member and the second heat insulating member may include a body portion covering an upper surface of the rail, and a side portion bent from both ends of the body portion to cover a side surface of the rail.

A distance between the side wall and one end of the second rail may be longer than a length of the second heat insulating member, and a portion located on the extension of the first rail may be a portion of the portion located on the body member of the first rail. It may be less than the width.

The extension may be bent at a right angle to the top of the side portion.

The body member and the side member may be integrally cast.

The grate may comprise a first grate mounted over the adjacent first insulating member and a plurality of second grate disposed side by side between the first grate.

The first grate may include a plate member having one side opened and a grate member inserted into and fixed to the opened portion of the plate member.

The grate member may be inserted into and fixed to the opened portion of the plate member, and a gap may be formed between the grate members.

The grate member may include a body portion and an edge portion formed at a side surface thereof so as to extend from both ends of the body portion and to be inserted and fixed to the plate member.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. These embodiments of the present invention are only for understanding the present invention, but the present invention is not limited thereto. It is, therefore, to be understood that the present invention may be modified and modified in many other forms.

1 is a partial perspective view of a sintered cart according to an embodiment of the present invention.

Referring to FIG. 1, the sintered bogie according to the present embodiment includes a bogie body 100, a side wall 200, a heat insulating member 300, and a grate 400.

The balance body 100 includes a body member 110 through which air is sucked downward, and side members 130 fixed to both side surfaces of the body member 110. In addition, the side member 130 is equipped with a traveling wheel 170 for moving the sintered trolley on the infinite track where the sintering process occurs. A plurality of rails 150 extending along one direction (y-axis direction in the drawing) are disposed in the main body 110 to be spaced apart from each other.

The side wall 200 is mounted on each side member 130 of the balance body 100 to confine the raw material charged to the sintered balance.

On the trolley | bogie main body 100, the several heat insulation member 300 which protects the trolley | bogie main body 100 from high heat is mounted. At this time, the heat insulating member 300 is the first heat insulating member 310 mounted on the side member 130, the second heat insulating member 320 mounted on the rail 150 between the first heat insulating member 310. And a third heat insulating member 330 mounted between the first heat insulating member 310 on the side member 130.

At this time, the width of the first heat insulating member 310 is larger than the width (x-axis length) of the second heat insulating member, and the distance between the side wall 200 and one end of the second rail 150b is the second heat insulating member 320. It may be formed longer than the length (y-axis length).

A plurality of grate 400 is mounted side by side on the heat insulating member 300. The grate 400 is mounted on the body member 110 between the first grate 430 and the first grate 410 mounted over the first insulating member 310 adjacent to each other on the side member 130. A second grate 410 is located.

The grate 400 is formed with a gap through which air can pass and sintered raw material cannot pass. The second grate 410 is a straight grate, a gap is formed between the second grate 410 can pass the air but not the sintered raw material. The first grate 430 is different from the second grate 410, which will be described in more detail with reference to FIG. 6.

Hereinafter, with reference to the drawings will be described in detail the respective components of the sintered trolley according to this embodiment.

First, the trolley | bogie main body 100 is demonstrated with reference to FIG. 2A and FIG. 2B.

FIG. 2A is a perspective view illustrating a bogie body of a sintered bogie according to an embodiment of the present invention, and FIG. 2B is a cross-sectional view taken along the line II-II of FIG. 2A.

The balance body 100 includes an air suction unit (not shown) connected to a lower portion of the body member 110 to suck air into the lower portion, and side members 130 fixed to both sides of the body member 110.

In this case, the side member 130 includes side portions 130a that are close to both sides of the body member 110, and extension portions 130b that are bent at the upper end of the side portion 130 and extend outwardly of the body member 110. do. In the present embodiment, the angle α formed by the side portion 130a and the expansion portion 130b is substantially right angle. Because of this structure, the wind blow that may occur along the side wall 200 (shown in Figure 1, below) during operation does not occur.

And, as described above, the balance body 100 includes a rail 150 on which the heat insulation member 300 is mounted. At this time, the rail 150 is mounted on the body member 110 of the bogie body 100 and the first rail 150a mounted from the body member 110 to the expansion part 130 on the bogie body 100. A second rail 150b. Extending the first rail 150a to the extension 130b longer than the second rail 150b prevents the heat insulating member 300 mounted on the rail 150 from escaping out of the sintered trolley. For sake.

At this time, the width of the portion located in the extension part 130b of the first rail 150a is smaller than the width of the portion located in the body member 110 of the first rail 150a and the second rail 150b By mounting only to the body member 110, the first heat insulating member 310 can be easily replaced through the extension 130b. And the width | variety (x-axis direction length) of the 1st heat insulation member 310 (shown in FIG. 1) is made larger than the width (x-axis direction length) of the 2nd heat insulation member 320 (shown in FIG. 1), and a side wall The distance between the end of the 200 and the second rail 150b is longer than the length (y-axis length) of the second heat insulating member 320 (shown in FIG. 1) so that the second heat insulating member 320 can be easily replaced. have.

On the extension 130b, the first rail 150a is formed to have a small width, and the second rail 150b is not mounted. Thus, the first heat insulating member 310 can be easily lifted upwards, and then the second heat insulating member 320 is moved along the rails 150 to the extension 130b to be lifted upwards. The heat insulating member 310 and the second heat insulating member 320 may be easily replaced.

That is, in the present embodiment, the heat insulating member can be replaced without going through a complicated process such as dismantling the side wall unlike the related art. Therefore, it is possible to shorten the working time when replacing the insulating member and to prevent safety accidents that may occur when replacing the insulating member.

Next, the heat insulating member 300 and the grate 400 mounted on the balance main vehicle 100 will be described in detail with reference to FIGS. 3 to 6, and the heat insulating member ( The state in which the 300 and the grate 400 are mounted will be described in detail.

3 is a perspective view illustrating a first heat insulating member 310 according to an embodiment of the present invention. As shown in FIG. 3, when the first heat insulating member 310 is mounted on the extension 130b (see FIG. 2, the same below), the first heat insulating member 310 has an internal space therebetween. Therefore, air is allowed to pass through between the first heat insulating member 310 and the expansion part 310b, and the temperature of the first heat insulating member 310 in contact with the expansion part 130b is minimized to generate high temperature. The heat of the first grate 430 is prevented from being transferred to the extension 130b.

4 is a perspective view illustrating the second heat insulating member 320 according to an embodiment of the present invention. Referring back to FIG. 1, the second heat insulating member 320 is mounted on the rail 150 of the balance body 100. Therefore, the second heat insulating member 320 includes a body portion 320a covering the upper surface of the rail 150 and a side portion 320b bent from both ends of the body portion 320a to cover the side surface of the rail 150. . The second heat insulating member 320 may further include other portions as necessary.

5 is a perspective view illustrating a third heat insulating member 330 according to an embodiment of the present invention. Referring to FIG. 3, recesses 332 are formed on the upper and lower surfaces of the third heat insulating member 330. The concave portion 332 includes an upper concave portion 332a that is formed in a recess and a lower concave portion 332b in which a lower surface is formed in a recess. In addition, a fastening hole 335 through which a fastening part (not shown) may be fastened is formed in the third heat insulating member 330.

The top concave portion 332a of the third heat insulating member 330 provides a passage through which air can pass to the lower portion of the first grate 430, thereby causing unfired in the side wall 200 and the extension 130b. Prevent the phenomenon. In addition, the lower surface recessed portion 332b of the third heat insulating member 330 allows air to pass between the third heat insulating member 330 and the expansion portion 130b and contacts the expansion portion 130b. The area of 330 is minimized to prevent heat of the first grate 430 generated by the high temperature heating from being transmitted to the extension 130b.

6 is a perspective view illustrating a first grate 430 according to an embodiment of the present invention. The first grate 430 mounted on the expansion part 130b includes a plate member 430a having one side surface (left side in the y-axis direction in FIG. 6) and a plurality of openings of the plate member 430a. An insert fixed grate member 430b is included.

The grate member 430b includes a body portion 430b ₁ and an edge portion 430b ₂ . Steps for inserting and fixing the grate member 430b to the plate member 430a are formed at the edge portion 430b ₂ of the grate member 430. The plurality of grate members 430b are inserted in close contact with the plate member 430a using the step of the grate member edge portion 430b ₂ .

The body portion 430b ₁ of the grate member is formed to have a smaller width (y-axis length) than the edge portion 430b ₂ . Therefore, a gap 432 through which air can pass is formed between the body parts of the neighboring grate members 430b.

In FIG. 6, the plate-like member 430a is illustrated in a “c” shape, but this is to illustrate the present invention and the present invention is not limited thereto. Therefore, it is sufficient if one side of the plate-like member 430a is opened to allow the grate member 430b to be inserted.

FIG. 7 is a cross-sectional view taken along the line II of FIG. 1. FIG. As shown in FIG. 7, the first heat insulating member 310 and the third heat insulating member 330 are alternately positioned on the extension 130b. At this time, since the fastening hole 335 (shown in FIG. 5, the same as below) is formed on the third heat insulating member 330, a bolt 337 is fitted to the fastening hole 335 to connect the third heat insulating member. 330 is mounted on the extension 130b. The first heat insulating member 330 is positioned and fixed between the third heat insulating members 310. The first grate 430 is mounted on the first heat insulating member 310 adjacent to each other.

As shown, since the upper recess 332a is formed on the third heat insulating member 330, a space is formed between the first grate 430 and the third heat insulating member 330. This space provides a passage through which air flows under the first grate 430 to suppress unbaking phenomenon that may occur in the vicinity of the side wall 200 and the extension 130b meet.

In addition, since an inner space is formed below the first heat insulating member 310, and a recess 332b is formed below the third heat insulating member 330, the first heat insulating member 310 and the expansion unit 130b and A space through which air can pass is also formed between the third heat insulating member 330 and the expansion part 130b. This space prevents the extension 130b from being deformed by the first grate 430 heated at a high temperature during the sintering process. That is, the transfer of heat is prevented by minimizing the areas of the first heat insulating member 310 and the third heat insulating member 330 adjacent to the extension 130b.

Hereinafter, with reference to Figure 1 will be described in detail the action of the sintering cart according to the present invention.

The raw material charging chute (not shown) fills the sintered raw material (not shown) to the height of the sidewall 200 on the first grate 430 and the second grate 410. In the present exemplary embodiment, since the expansion part 130b is formed on both upper sides of the body member 110 in the outward direction of the body member, the filling amount of the sintered raw material may be increased. In addition, there is an effect of maximizing the amount of air used in the sintering reaction while maintaining the width of the air suction unit (not shown) as before.

When the sintered raw material filled in the sintered bogie is ignited by an igniter (not shown), combustion starts at the top of the sintered raw material layer. When the air suction unit (not shown) connected to the lower portion of the body member 110 sucks air into a gap formed in the first grate 430 and the second grate 410, the sintered raw material layer is continuously burned. A sintered ore is manufactured by baking a sintering raw material with the heat | fever generated by combustion, a reducing gas, etc.

As described above, in the present embodiment, the first heat insulating member 310 and the third heat insulating member 330 are mounted on the expansion part 130b, and the first grate 430 is mounted on the expansion part, thereby expanding by high heat. Deformation of the portion 130b can be prevented. In addition, by providing a passage through which air flows to the first heat insulating member 310 and the third heat insulating member 330, an unbaking phenomenon that may occur at a corner portion where the side wall 200 and the extension 130b meet. do.

Hereinafter, the present invention will be described in more detail with reference to experimental examples of the present invention. These experimental examples are only for illustrating the present invention, the present invention is not limited thereto.

Experimental Example

In the present experimental example, the sintering process was performed using the sintering cart according to the embodiment of the present invention. A sintered trolley having a length of 4 m and a length of 0.25 m of an extension part was fabricated and tested as follows. Under these conditions, a total of four sintered bogies were tested.

Comparative Example 1

8 is a cross-sectional view schematically showing a sintered truck according to Comparative Example 1. FIG. The sintered bogie according to Comparative Example 1 is a separate sintered bogie that is assembled after separately casting the main body 510 and the head part 512 on which the side wall 520 is mounted. The air suction part 540 is located below the main body 510.

An extension plate 514 is mounted on the top of the head portion 512 to expand the width of the sintered trolley. At this time, the grate 530a is disposed above the main body 510 to allow air to pass therethrough, and the gas impermeable plate 530b is disposed above the expansion plate 514 to prevent air from passing through. It was.

Comparative Example 2

9 is a sectional view schematically showing a sintered truck according to Comparative Example 2. FIG. The sintered bogie according to Comparative Example 2 is an integrated sintered bogie in which the main body 610 is integrally cast. The side wall 620 is mounted to the main body 610, and the air suction unit 640 is positioned below the main body 610.

The outer wall 610a of the main body 610 is formed to be inclined, so that the upper width of the sintered trolley is expanded. A straight grate 630 is disposed on the main body 610. That is, the grate having the same shape as the grate located on the other part is disposed on the part of which the width is extended.

Comparative Example 3

10 is a cross-sectional view schematically showing a sintered truck according to Comparative Example 3. FIG. The sintered trolley | bogie which concerns on the comparative example 3 is an integral sintered trolley which integrally cast the main body 710 of a sintered trolley | bogie. The side wall 720 is mounted to the main body 710, and the air suction unit 740 is positioned below the main body 710.

The upper side portions of the main body 710 are formed with portions 712 extending the width of the main body 710. The main body 710 has a straight grate 730 is disposed. That is, the grate having the same shape as the grate located on the other part is disposed on the portion 712 having the wide width.

Table 1 shows the results after sintering iron ore using the sintering cart according to the above experimental example and Comparative Examples 1 to 3.

Table 1 shows the strength (a) of the sintered ore sintered in the vicinity of the extension and the side wall, the particle size having a particle diameter of 10 mm or less among the sintered ore sintered in the vicinity of the extension and the side wall (b), whether the blower is increased (c) ), Abrasion degree (d), productivity (e), recovery rate (f) of the sintered bogie, the strength (g) of the sintered ore sintered in the sintered raw material layer, and the particle size having a particle size of 10 mm or less among the sintered ore sintered in the sintered raw material layer Medium (h), oxygen concentration (i) and dust emission concentration (j) of the exhaust gas are shown. Here, the oxygen concentration (i) and the dust discharge concentration (j) of the exhaust gas can be seen the degree of leakage and flat wind, the high oxygen concentration (i) and dust discharge concentration (j) of the exhaust gas during the sintering process It means there were more typhoons and flat winds.

And, the gas flow of the sintered bogie according to the experimental example is shown in Figure 11a, the gas flow of the sintered bogie according to Comparative Example 1 is shown in Figure 11b.

First, the experimental example and the comparative example 1 are compared and demonstrated.

As shown in FIG. 11A, it can be seen that in the sintered trolley according to the experimental example, the gas flows smoothly even at the portion where the extension part and the side wall meet. In the experimental example, a passage through which gas can pass is provided in the expansion part so that the gas can flow smoothly, and the unbaking phenomenon of the sintered raw material does not occur even near the lower sidewall. As shown in FIG. 11B, it can be seen that in Comparative Example 1, the flow of gas is blocked at a portion where the extension part and the side wall meet to show a micro grained part.

Looking at a and b of Table 1, it can be seen that a is 70% in Experimental Example, a is 50% in Comparative Example 1, b is 50% in Experimental Example, and b is 70% in Comparative Example 1. That is, in the experimental example, it can be seen that the unbaking phenomenon does not occur, so that a sintered ore having a large and even particle size can be manufactured.

In addition, referring to FIG. 8, the sintered trolley according to Comparative Example 1 may be assembled after the main body and the head part are separately cast, and thus a leaking air W1 may occur.

Next, the experimental example, the comparative example 2, and the comparative example 3 are compared and demonstrated.

Looking at c of Table 1, the experimental example did not increase the exhaust fan, it can be seen that in the Comparative Example 2 and Comparative Example 3 should increase the exhaust fan.

In addition, when looking at the d of Table 1, it can be seen that in the experimental example, the sintered cart was not worn, but the sintered cart according to Comparative Example 2 and Comparative Example 3 was badly worn. In Comparative Example 2, as illustrated in FIG. 9, the outer wall is formed as an inclined surface, and the sintered cart may be worn by the air leak or the wind breeze (W2). In Comparative Example 3, the sintered trolley may be worn because hot gases generated during the sintering process contact the main body.

In addition, looking at e, f, g, h of Table 1, it can be seen that in the case of the experimental example, the quality and productivity of the sintered ore is superior to the case of Comparative Example 2 and Comparative Example 3 in which the exhaust fan is increased without increasing the exhaust fan.

In addition, when looking at the i and j of Table 1, the experimental example shows a lower value than the case of Comparative Example 2 and Comparative Example 3, the experimental example is less leakage and flat wind than Comparative Example 2 and Comparative Example 3 It can be seen that it occurs.

As described above, according to the present invention, the expansion portion is formed in the balance body to increase the filling amount of the sintering raw material and to maximize the amount of air used for the sintering reaction without increasing the blower.

In addition, by integrally casting the body member and the side member, it is possible to prevent leaks that may occur inside the main body.

In addition, since the extended portion of the side member is substantially orthogonal and bent at the side portion of the side member, it is possible to prevent the body member from being damaged by the waste wind.

Mounting the heat insulating member over the extension of the side member prevents the grate from directly contacting the extension and improves the structure of the heat insulating member to minimize the area of the heat insulating member in contact with the extension. Therefore, it is possible to prevent the expanded portion from being deformed by high heat during sintering.

In addition, by modifying the structure of the heat insulating members mounted on the extension part of the side member, it is possible to provide a passage through which air can flow even in the vicinity of the extension part, thereby suppressing the unbaked part phenomenon that may occur at the lower edge portion of the side wall.

In the present invention, the insulating members can be easily replaced by improving the structure of the rail on which the insulating member is mounted.

Although the present invention has been described above, it will be readily understood by those skilled in the art that various modifications and variations are possible without departing from the spirit and scope of the claims set out below.

Claims (15)

A bogie body including a body member through which air is sucked downward and side members fixed to both sides of the body member; Side walls mounted on each side member, A plurality of heat insulating members mounted side by side on the balance body, and A plurality of grate mounted side by side on the insulating member As a sintered bogie comprising: The side member includes a side portion close to both sides of the body member, and an extension portion bent at the upper end of the side portion extending in the outward direction of the body member, The heat insulating member may include a plurality of first heat insulating members spaced apart from each other on the extension part, a plurality of second heat insulating members disposed side by side between the plurality of first heat insulating members on the body member, and the extension. And a third heat insulating member mounted between the plurality of first heat insulating members in the floating state. In claim 1, The width of the said 1st heat insulating member is larger than the width of the said 2nd heat insulating member. In claim 1, The said 3rd heat insulating member is a sintered trolley | bogie which recessed in an upper surface and a lower surface, respectively. In claim 1, The third heat insulating member is bolted on the expansion portion is mounted on the sintered bogie (bolt). In claim 1, And the first heat insulating member is mounted on the expansion portion while forming an inner space thereunder. In claim 2, At least one of the first heat insulating member and the second heat insulating member is mounted to the bogie body and includes a plurality of rails spaced apart from each other, The rail is A first rail extending and mounted to the extension part; and A second rail spaced apart from the first rail and shorter than a length of the first rail; Sintered bogie comprising a. In claim 6, At least one of the first heat insulating member and the second heat insulating member, A body part covering an upper surface of the rail, and Side portions bent from both ends of the body portion to cover the side of the rail Sintered bogie comprising a. In claim 6, And a distance between the side wall and one end of the second rail is longer than the length of the second heat insulating member. In claim 6, A portion located on the extension of the first rail is smaller than a width of a portion located on the body member of the first rail. In claim 1, The expansion portion is connected to the upper end of the side portion is bent at a right angle sintered bogie. In claim 1, And said body member and said side member are integrally cast. In claim 1, The grate is, A first grate mounted over the mutually adjacent first insulating member, and A plurality of second grate disposed side by side between the first grate; Sintered cart comprising a. In claim 12, The first grate, A plate member having one side opened; and Grate member inserted and fixed to the open portion of the plate member Sintered bogie comprising a. In claim 13, A plurality of the grate member is inserted and fixed to the opened portion of the plate member, the sintered trolley forming a gap between the grate member. In claim 1, The grate member, Body part, and Edge portions extending from both ends of the body portion and having a step formed on the side surface to be inserted and fixed to the plate member. Sintered bogie comprising a.

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