JP7164430B2 - Support structure for rotary furnace - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to rotary furnace support structures, particularly rotary kiln furnaces, rotary stoker incinerators, and the like.

Patent Document 1 discloses, as a rotary furnace of a rotary stoker type incinerator, a rotary furnace comprising a cylindrical furnace body and tires attached to the outer periphery of the inlet side and outlet side of the furnace body. there is

JP-A-2005-114213

In a rotary furnace, the furnace body is sometimes supported by tires via leaf spring members or spoke members so as to absorb radial thermal expansion of the furnace body. However, both the leaf spring member and the spoke member have a complicated structure and a large number of parts, which is one of the factors that hinder weight reduction of the rotary furnace.

An object of the present disclosure is to simplify the support structure of a rotary furnace and reduce its weight.

A support structure for a rotary furnace according to an aspect of the present disclosure includes a cylindrical furnace body, a tire that surrounds the radially outer side of the furnace body, and an engaging portion that is provided to one of the furnace body and the tire so as not to move relative to each other. and an engaged portion provided relatively immovably on the other of the furnace main body and the tire. The engaged portion engages with the engaging portion so as to be relatively movable in the radial direction of the furnace body and relatively immovable in the circumferential direction. The furnace main body is supported by the tire via the engaging portion and the engaged portion engaged with the engaging portion.

The engaging portion may be a pin extending in the axial direction of the furnace main body, the engaged portion may be a long hole through which the pin is inserted, and the long hole may extend in the radial direction of the furnace main body. The engaging portion is provided on the first member fixed to one of the members, the engaged portion is provided on the second member fixed to the other, and the first and second members are connected to each other. to restrict axial movement of the tire with respect to the furnace body. Further, a support mechanism composed of an engaging portion, an engaged portion, a first member, and a second member abutting against the first member from one side in the axial direction of the furnace main body is provided around the furnace main body. A plurality of them may be arranged in the direction. The plurality of support mechanisms includes a first support mechanism in which the second member contacts the first member from one axial side of the furnace main body, and a second member contacts the first member from the other axial side of the furnace main body. A contacting second support mechanism may also be included.

The engaging portion is a convex portion extending in the radial direction of the furnace body, the engaged portion is a concave portion that engages with the convex portion, and the inner wall surface of the concave portion slides against the side surface of the convex portion. It may be in surface contact so as to be movable. Furthermore, the members defining the protrusion and the recess may abut against each other in the axial direction of the furnace body to restrict axial movement of the tire with respect to the furnace body.

According to the supporting structure of the rotary furnace, the structure is simplified and the weight is reduced.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic block diagram of the rotary stoker-type incinerator concerning embodiment. 1 is a view showing a support structure of a rotary furnace according to a first embodiment, (a) is a view of the support structure seen from the axial direction of the furnace main body, and (b) is a cross section along line BB of (a). FIG. (c) is a cross-sectional view taken along line CC of (a). 3A and 3B are views for explaining the action of the support structure of FIG. 2; FIG. FIG. 2 is a view showing a support structure of a rotary furnace according to a comparative example, (a) is a view of the support structure seen from the axial direction of the furnace main body, and (b) is a cross-sectional view along the DD line of (a). be. FIG. 10 is a view showing a support structure of a rotary furnace according to another comparative example, where (a) is a view of the support structure seen from the axial direction of the furnace main body, and (b) is a cross section along line EE of (a). It is a diagram. FIG. 4 is a view showing a support structure of a rotary furnace according to a second embodiment, (a) is a view of one of the support mechanisms of the support structure seen from the axial direction of the furnace main body, (b) is F- It is a sectional view along F line.

Several embodiments are described below with reference to the drawings. Elements having substantially the same functions in each drawing are denoted by the same reference numerals, and overlapping descriptions are omitted.

<First Embodiment>
As shown in FIG. 1, the rotary stoker incinerator S includes a rotary furnace RF. The rotary furnace RF includes a cylindrical furnace main body 1 and tires 2 surrounding the outer side of the furnace main body 1 in the radial direction. In the following description, the axial direction of the furnace body 1 is called the z direction, the radial direction of the furnace body 1 is called the r direction, the circumferential direction of the furnace body 1 is called the θ direction, and the rotation direction of the rotary furnace RF is called the R direction.

A furnace main body 1 of the rotary furnace RF is placed horizontally in a cover casing 3 so that the outlet side is lower than the inlet side. The tires 2 are attached to the outer periphery of the inlet side and the outlet side of the furnace body 1 , and are placed on turning rollers 4 so as to be rotatable about the central axis of the furnace body 1 . In this embodiment, the furnace main body 1 is rotationally driven by rotating the tire 2 on the entrance side with a driving device.

The furnace main body 1 includes an inlet-side header pipe 5 and an outlet-side header pipe 6 which are formed in a ring shape, and a large number of water pipes (not shown) arranged at regular intervals in the θ direction between them. Both ends of each water pipe are connected to an inlet-side header pipe 5 and an outlet-side header pipe 6, respectively. Fins (not shown) are attached to gaps between the water pipes, and the fins are provided with a large number of air holes at predetermined intervals in the longitudinal direction. A rotary joint 7 is connected to the outlet side header pipe 6, and the boiler water is circulated through each water pipe via this.

A fan duct 8 is arranged below the furnace body 1 . The air duct 8 supplies combustion air into the furnace from the lower side surface of the furnace body 1 through each air hole. The air duct 8 is divided into a plurality of flow paths. Each divided flow path is provided with a damper 9, and the opening of the damper 9 is adjusted to adjust the amount of combustion air supplied.

In the rotary stoker type incinerator S, the waste 11 in the input hopper 10 is fed into the furnace main body 1 from the inlet side of the furnace main body 1 by the dust feeder 12 . The supplied waste 11 is transferred to the downstream side by the rotation of the furnace body 1, and dried, thermally decomposed, and burned in order from the upstream side in the furnace by the combustion air supplied from the air duct 8. Unburned gas is processed in the downstream secondary combustion chamber 13 . The ash discharged from the furnace body 1 is treated in the post-combustion device 14 .

The furnace body 1 is supported on the tires 2 by a plurality of support mechanisms 20, as shown in FIG. 2(a). The plurality of support mechanisms 20 are provided along the extending direction of the tire 2 and arranged at predetermined intervals in the θ direction. In the illustrated example, the support mechanisms 20 are arranged at eight locations at regular intervals in the θ direction. may be

The plurality of support mechanisms 20 includes a first support mechanism 21 and a second support mechanism 22, as shown in FIG. 2(a). As shown in FIGS. 2B and 2C, each support mechanism 21, 22 is composed of a first bracket 31, which is a first member fixed to the tire 2, and a second member fixed to the furnace body 1. a second bracket 32; The first bracket 31 has a first through hole 31a penetrating in the z direction, and the second bracket 32 has a second through hole 32a penetrating in the z direction.

A pin 33 extending in the z direction is inserted through the first through hole 31a and the second through hole 32a. The pin 33 of this embodiment is composed of, for example, a stepped bolt made of chromium molybdenum steel. The stepped bolt includes a bolt head 33a, a cylindrical large-diameter portion 33b, and a small-diameter portion 33c provided closer to the tip than the large-diameter portion 33b. The length of the large-diameter portion 33b is determined by the thickness t1 of the plate-shaped portion of the first bracket 31 formed with the first through hole 31a and the plate-shaped portion of the second bracket 32 formed with the second through hole 32a. It is set to be substantially equal to the sum of the thickness t2 of the portion. The shape, material, etc. of the pin 33 are not limited to those described above, and can be appropriately selected according to the required specification conditions.

A washer 34 is provided between the peripheral portion of the first through hole 31a of the first bracket 31 and the bolt head portion 33a. A washer 36 is provided between the peripheral portion of the second through hole 32 a of the second bracket 32 and the nut 35 . The washer 36 is sandwiched between a stepped portion formed between the large-diameter portion 33b and the small-diameter portion 33c of the stepped bolt and the nut 35 tightened to the small-diameter portion 33c. The pin 33 constitutes an engaging portion G1 that is provided so as not to move relative to the tire 2 when inserted into the first through hole 31a. Further, the second through hole 32a constitutes an engaged portion G2 that is provided so as not to move relative to the furnace body 1. As shown in FIG. The second through hole 32a is an elongated hole SH extending in the r direction, and engages with the pin 33 so as to be relatively movable in the r direction but not relatively movable in the θ direction. The width of the long hole SH is slightly larger than the diameter of the large diameter portion 33b of the pin 33 . The length of the long hole SH is not particularly limited, but can be set to about 140% of the diameter of the large diameter portion 33b of the pin 33, for example.

FIG. 3 schematically shows the force transmitted from each pin 33 to the peripheral portion of the second through hole 32a of the second bracket 32 or the inner surface of the long hole SH. A vector indicated by a solid line in the figure is a force acting on the inner surface of the long hole SH. The vector indicated by the dashed line in the drawing is the vertical component of the force acting on the inner surface of the long hole SH, and is the weight of the furnace body 1 shared by the peripheral edge portions of the second through holes 32a. That is, the sum of the vectors indicated by the dashed lines corresponds to the weight of the furnace body 1 supported by the tire 2 . Here, the weight of the furnace body 1 includes, for example, the weight of structures such as the water pipes, header pipes 5 and 6, and fins that constitute the furnace body 1, the weight of the waste 11 existing in the furnace, and the cooling water flowing in the water pipes. including the weight of

Each long hole SH extends radially from the central axis X in a cross section perpendicular to the central axis X of the furnace body 1, as shown in FIG. Therefore, even if the position of the central axis X of the furnace body 1 were to deviate from the position of the central axis Y of the tire 2, it would extend into the plurality of long holes SH in a direction intersecting the direction of deviation of the central axis. In these, the inner surface of the long hole SH interferes with the outer surface of the pin 33 . For example, even if the furnace body 1 tries to move vertically downward with respect to the tire 2 due to gravity, some of the plurality of long holes SH are in a state in which the extending direction is inclined with respect to the vertical direction, as shown in FIG. The inner surface of the long hole SH interferes with the outer peripheral surface of the pin 33 at (six points in FIG. 3). The downward movement of the furnace body 1 with respect to the tire 2 is restrained by the mechanical interference between the pin 33 and the long hole SH. In other words, the furnace body 1 is supported by the tires 2 via the pins 33 and the long holes SH engaged therewith.

As shown in FIG. 2B, in the first support mechanism 21, the second bracket 32 contacts the first bracket 31 from the entrance side in the z direction (one side in the z direction). Specifically, the peripheral portion of the first through hole 31a on the inlet side surface 31b of the first bracket 31 and the peripheral portion of the second through hole 32a on the outlet side surface 32b of the second bracket 32 face each other in the z direction. abut. On the other hand, in the second support mechanism 22, as shown in FIG. 2C, the second bracket 32 contacts the first bracket 31 from the exit side in the z direction (the other side in the z direction). Specifically, the peripheral portion of the first through hole 31a on the outlet side surface 31c of the first bracket 31 and the peripheral portion of the second through hole 32a on the inlet side surface 32c of the second bracket 32 face each other in the z direction. abut. In this manner, the brackets 31 and 32 are in contact with each other in the z-direction to restrict movement (positional displacement) of the tire 2 in the z-direction with respect to the furnace body 1 .

Furthermore, as shown in FIG. 2A, the first support mechanisms 21 and the second support mechanisms 22 are alternately arranged in the θ direction. That is, the second bracket 32 is arranged in a staggered manner with respect to the first bracket 31 when viewed from the outside in the r direction. The arrangement of the support mechanisms 21 and 22 in the θ direction is not limited to that shown in the figure, and the support mechanisms 21 and 22 may be alternately arranged, for example.

The effects of this embodiment will be described below.

(1) As a support structure of the rotary furnace RF according to the comparative example, there is one in which the furnace body 1 is supported on the tire 2 via a plurality of spoke members 80 as shown in FIG. In this support structure, each spoke member 80 is oscillatably connected to the tire 2 and the furnace main body 1 at both ends thereof, and the spoke member 80 is adapted to expand or contract diameter deformation due to thermal expansion/contraction of the furnace main body 1 . 80 is designed to absorb the vibration. As another comparative example, as shown in FIG. 5, there is one in which the furnace main body 1 is supported by the tires 2 via a plurality of leaf spring members 90 . In this support structure, the expansion/reduction deformation of the furnace body 1 is absorbed by the elastic deformation of the plate spring member 90 .

On the other hand, in the support structure according to the present embodiment, the pin 33 which is the engaging portion G1 provided immovable relative to the tire 2 and the engaged portion G1 provided immovable relative to the furnace main body 1 are provided. It has a long hole SH which is the joint G2. The long hole SH engages with the pin 33 so as to be movable relative to the pin 33 in the r direction and immovable relative to the θ direction. Therefore, expansion/reduction deformation due to thermal expansion/contraction of the furnace body 1 is absorbed by the relative movement in the r direction between the pin 33 and the long hole SH. On the other hand, as described above, the load of the furnace body 1 is supported by the tires 2 via the pins 33 and the long holes SH engaged with the pins 33 so as to be relatively movable in the direction r and immovable in the direction θ.

Therefore, according to the support structure according to the present embodiment, it is not necessary to provide the spoke members 80 or leaf spring members 90 according to the comparative example. The weight, and thus the weight of the rotary furnace RF, can be reduced. Also, the spoke member 80 and the leaf spring member 90 can be omitted, and the height (dimension in the r direction) from the outer peripheral surface of the furnace body 1 to the outer peripheral surface of the tire 2 can be reduced. As a result, the ratio of the outer diameter of the furnace body 1 to the outer diameter of the tire 2 can be increased, and the furnace volume can be increased while suppressing the maximum dimension of the rotary furnace RF in the r direction.

(2) In addition, in the support structure according to the present embodiment, the pin 33 extending in the z direction is inserted through the long hole SH long in the r direction, and the pin 33 is prevented from relatively moving in the θ direction by the inner surface of the long hole SH. While being regulated, it is possible to relatively move in the r direction. That is, according to the combination of the pin 33 and the long hole SH, the structure is simpler than that of the spoke member 80 or the leaf spring member 90 according to the comparative example, and the expansion/contraction deformation due to the thermal expansion/contraction of the furnace main body 1 can be performed. while allowing the load of the furnace body 1 to be supported by the tire 2 . Furthermore, according to the support structure according to the present embodiment, the structure is simpler than that of the spoke member 80 or leaf spring member 90, so that workability and maintainability are also improved. For example, when removing the tire 2 from the furnace main body 1, the pin 33 is pulled out from the brackets 31 and 32 in the z direction, and the tire 2 is rotated by a predetermined angle in the θ direction with respect to the furnace main body 1, or left as it is. It suffices to move it in the z direction.

(3) In the support structure according to the comparative example shown in FIG. In addition, a thrust receiving hardware 81 is provided on the outer peripheral surface of the furnace body 1 . As shown in FIG. 4(b), the thrust receiving hardware 81 is mounted on the tire side mounting bracket 83 of the spoke member 80 by abutting the stopper bolts 81a from both sides in the z direction, thereby supporting the tire 2 against the furnace body 1 in the z direction. blocking movement. Similarly, in the support structure according to the other comparative example shown in FIG. As shown in FIG. 5(b), the thrust receiving metal fittings 91 are attached to the mounting brackets 93 of the plate spring members 90 by the stopper bolts 91a abutting from both sides in the z-direction, thereby supporting the tire 2 against the furnace body 1 in the z-direction. blocking movement.

On the other hand, in the support structure according to this embodiment, the first bracket 31 and the second bracket 32 are in contact with each other in the z-direction to restrict the movement of the tire 2 in the z-direction with respect to the furnace body 1 . This prevents displacement (displacement) of the tire 2 in the z direction with respect to the furnace body 1 when the furnace body 1 expands or contracts in the z direction. That is, according to the present embodiment, the brackets 31 and 32 can serve both as support metal fittings for the weight of the furnace body 1 and as thrust receiving metal fittings, so the thrust receiving metal fittings 81 and 91 according to the comparative example can be omitted. can be done.

(4) In addition, in the support structure according to this embodiment, the support mechanism 20 includes the first support mechanism 21 and the second support mechanism 22 . In the first support mechanism 21, the second bracket 32 contacts the first bracket 31 only from the entrance side in the z direction (one side in the z direction). It abuts on the first bracket 31 only from (the other side in the z direction). Therefore, compared with the case where one of the brackets 31 and 32 is brought into contact with the other from both sides in the z-direction, the movement of the tire 2 in the z-direction is efficiently restricted with a smaller number of parts, and the tire 2 is moved to the furnace body 1 in the z-direction. can follow the elongation and contraction of

(5) Furthermore, in the support structure according to the present embodiment, the peripheral portion of the first through hole 31a of the first bracket 31 and the peripheral portion of the second through hole 32a of the second bracket 32 are in contact with each other. receive a thrust load. Therefore, it is possible to reduce the surface pressure of the load receiving surface more than the stopper bolts 81a, 91a of the thrust receiving metal fittings 81, 91 according to the comparative example, thereby improving durability against repeated loads.

In this embodiment, in each support mechanism 20, the second bracket 32 abuts the first bracket 31 only from one side in the z direction. You may make it contact|abut on the 1st bracket 31 from both sides of a direction. That is, the second brackets 32 may be provided on both sides of the first bracket 31 in the z direction, and the first bracket 31 may be sandwiched between the two second brackets 32 . Conversely, the first bracket 31 may abut on the second bracket 32 from both sides in the z direction. The support rigidity against the thrust load in the support mechanism 20 can be increased as compared with the case where only one side is brought into contact.

Also, the cross-sectional shape of the pin 33 is not limited to a circular shape. For example, a flat portion may be formed in a region of the outer peripheral surface of the pin 33 that comes into sliding contact with the inner surface of the elongated hole SH due to the relative movement of the pin 33 in the r direction so as to reduce the contact surface pressure. .

<Other embodiments>
Next, a support structure for a rotary furnace RF according to another embodiment will be described. In addition, in the description of each embodiment, only the configurations different from those of the preceding embodiments will be described. The explanation is omitted.

As in the first embodiment, the support structure of the rotary furnace RF according to the following embodiments includes an engaging portion G1 provided immovably relative to one of the furnace main body 1 and the tire 2, and the other The engaged portion G2 is provided so as to be relatively immovable with respect to the . Then, the engaged portion G2 engages with the engaging portion G1 so as to be relatively movable in the r direction and relatively immovable in the θ direction. Therefore, in these embodiments as well, the same effects as in the first embodiment (at least the effect of (1) above) can be obtained.

<Second embodiment>
In the support structure of the rotary furnace RF according to the second embodiment, as shown in FIG. and a concave portion 42 which is an engaged portion G2 provided so as not to be relatively movable with respect to the tire 2 . The convex portion 41 extends in the r direction, and the concave portion 42 engages with the convex portion 41 so as to be relatively movable in the r direction and not relatively movable in the θ direction.

For example, as shown in FIG. 6B, the convex portion 41 has four side surfaces in a direction orthogonal to the r direction. The four side surfaces are a side surface 41a on the front side in the R direction (hereinafter referred to as a front side surface), a side surface 41b on the rear side in the R direction (hereinafter referred to as a rear side surface), a side surface 41c on the inlet side of the furnace body 1, and a side surface 41d on the outlet side. and

For example, as shown in FIG. 6A, the concave portion 42 includes a front side guide member 43 provided on the R direction front side of the convex portion 41 and a rear side guide member 44 provided on the R direction rear side of the convex portion 41. is a groove 45 having a depth in the r-direction formed between . The groove 45 is defined by an inner wall surface 45a on the front side in the R direction and an inner wall surface 45b on the rear side in the R direction. The inner wall surface 45a may be formed by the side surface of the front guide member 43 on the rear side in the R direction, and the inner wall surface 45b may be formed by the side surface of the rear guide member 44 on the front side in the R direction. The inner wall surfaces 45a and 45b are parallel to each other and parallel to the r direction. The distance between the inner wall surfaces 45a and 45b, that is, the width of the groove 45, is larger than the thickness of the protrusion 41, that is, the width from the front side surface 41a to the rear side surface 41b.

In the state where the convex portion 41 and the concave portion 42 are engaged, the inner wall surface 45a of the concave portion 42 slides on the front side surface 41a of the convex portion 41, and the inner wall surface 45b of the concave portion 42 slides on the rear side surface 41b of the convex portion 41, respectively. It is adapted to be in surface contact so as to be movable. The gap between the r-direction outer tip of the projection 41 and the bottom of the recess 42 prevents relative movement in the r-direction between the projection 41 and the recess 42 when the furnace body 1 thermally expands and contracts. Set to an acceptable size. The same applies to the gaps between the r-direction inner tips of the guide members 43 and 44 and the base of the projection 41 .

In this embodiment, as shown in FIG. 6B, a plate-like connecting member 50 is provided on the exit side of the guide members 43 and 44 in the z direction (the other side in the z direction) to connect them to each other. there is The connecting member 50 is fastened and fixed to, for example, the exit side surface 43a of the front guide member 43 and the exit side surface 44a of the rear guide member 44 by fastening members such as bolts (not shown). A region 50a of the inlet-side side surface of the connecting member 50 that faces the groove 45 defines the end of the groove 45 on the outlet side in the z direction. The connecting member 50 slidably abuts on the exit-side side surface 41d of the projection 41 in the area 50a. That is, the convex portion 41 and the connecting member 50 defining the concave portion 42 abut each other in the z direction. As a result, the z-direction movement of the tire 2 with respect to the furnace body 1 is restricted.

In the support mechanism 20 shown in FIG. 6, the connecting member 50 is provided on the exit side of the guide members 43 and 44 in the z direction (the other side in the z direction). The positional relationship is not limited to this. That is, the support mechanism 20 of this embodiment can include a support mechanism in which the connecting member 50 is provided on the entrance side in the z direction (one side in the z direction) of the guide members 43 and 44 .

(5) According to the present embodiment, since the inner wall surfaces 45a and 45b of the concave portion 42 are in surface contact with the side surfaces 41a and 41b of the convex portion 41, the contact surfaces of the contact portions between the convex portion 41 and the concave portion 42 Wear of the contact portion can be suppressed by reducing the pressure.

(6) According to the present embodiment, the convex portion 41 and the connecting member 50 defining the concave portion 42 are in contact with each other in the z-direction to restrict the movement of the tire 2 in the z-direction with respect to the furnace body 1. As in the first embodiment, the thrust receiving hardware 81, 91 according to the comparative example can be omitted.

The shapes of the convex portion 41 and the concave portion 42 are not particularly limited as long as the concave portion 42 can engage with the convex portion 41 so as to be relatively movable in the r direction and not relatively movable in the θ direction. For example, the shape of the convex portion 41 may be rod-like, tubular, rectangular, etc., in addition to the plate-like shape described above, and the shape of the concave portion 42 may be hole-like, etc., in addition to the groove-like shape.

<Third to Sixth Embodiments>
In the support structure according to the third embodiment, the pins 33 according to the first embodiment are provided in the furnace body 1 in some or all of the plurality of support mechanisms 20, and the long holes SH according to the first embodiment are provided. It is provided on the tire 2 . Further, in the support structure according to the fourth embodiment, the protrusions 41 according to the second embodiment are provided on the tire 2 in some or all of the plurality of support mechanisms 20, and the recesses 42 according to the second embodiment. are provided in the furnace body 1 .

Furthermore, in the support structure according to the fifth embodiment, a plurality of support mechanisms 20 are configured by combining any two or more of the support mechanisms 20 according to the first to fourth embodiments and their modifications. Furthermore, in the support structure according to the sixth embodiment, the plurality of support mechanisms 20 include any one or more of the support mechanisms 20 according to the first to fifth embodiments and their modifications, and the leaf spring according to the comparative example. It consists of a combination with a support structure using material 90 . In the sixth embodiment, part of the leaf spring members 90 are replaced with the support mechanism 20 associated with the combination, thereby reducing the weight of the rotary furnace RF compared to the comparative example.

Although several embodiments have been described above, the present disclosure is not limited to these embodiments, and various modifications and changes are possible within the scope of the gist thereof.

In the above embodiments and their modifications, the rotary furnace RF of the rotary stoker type incinerator S was taken as an example, but the above support structure can of course be applied to the support structure of other rotary furnaces such as rotary kiln furnaces. is.

RF rotary furnace 1 furnace body 2 tire 20 support mechanism 21 first support mechanism 22 second support mechanism 31 first bracket (first member)
32 second bracket (second member)
SH long hole 33 pin 41 protrusion 41a front side surface (side surface)
41b rear side (side)
42 recess 45 groove (recess)
45a, 45b inner wall surface 50 connecting member (member defining recess)
G1 Engaging portion G2 Engaged portion

Claims (5)

a cylindrical furnace body;
a tire surrounding the radially outer side of the furnace body;
a first engaging portion provided in one of the furnace main body and the tire so as not to move relative to each other;
A first engaged portion which is provided on the other of the furnace main body and the tire so as not to move relative to each other, and engages with the first engaging portion so as to be relatively movable in the radial direction of the furnace main body and immovable relative to the circumferential direction of the furnace main body. Department and
with
The furnace body is supported by the tire via the first engaging portion and the first engaged portion engaged with the first engaging portion ,
The first engaging portion is a pin extending in the axial direction of the furnace body,
The first engaged portion is an elongated hole through which the pin is inserted,
The rotary furnace support structure , wherein the long hole extends in the radial direction of the furnace body . The first engaging portion is provided on a first member fixed to the one,
The first engaged portion is provided on a second member fixed to the other,
2. The support structure for a rotary furnace according to claim 1 , wherein said first and second members abut against each other in the axial direction of said furnace body to restrict axial movement of said tire with respect to said furnace body. The first engaging portion, the first engaged portion, the first member, and the second member contacting the first member from one side in the axial direction of the furnace body. A plurality of support mechanisms are arranged in the circumferential direction of the furnace body,
The plurality of support mechanisms include: a first support mechanism in which the second member abuts against the first member from one side of the furnace body in the axial direction; 3. The support structure for a rotary furnace according to claim 2 , further comprising a second support mechanism that contacts said first member. a second engaging portion provided in one of the furnace main body and the tire so as not to move relative to each other;
A second engaged portion which is provided on the other of the furnace main body and the tire so as not to move relative to each other, and which engages with the second engaging portion so as to be relatively movable in the radial direction of the furnace main body and immovable in the circumferential direction. Department and
further comprising
The furnace body is supported by the tire via the second engaging portion and the second engaged portion engaged with the second engaging portion,
The second engaging portion is a convex portion extending in the radial direction of the furnace body,
The second engaged portion is a concave portion that engages with the convex portion,
2. The support structure for a rotary furnace according to claim 1, wherein an inner wall surface of said recess is in surface contact with a side surface of said protrusion so as to be slidable. 5. The support of the rotary furnace according to claim 4 , wherein the protrusion and the member defining the recess are in contact with each other in the axial direction of the furnace body to restrict axial movement of the tire with respect to the furnace body. structure.

Images