JP7144313B2 - Rotating structures and incinerators - Google Patents

Description

The present disclosure relates to rotating structures and incinerators using the same.

2. Description of the Related Art Conventionally, there is an industrial apparatus provided with a rotating structure that agitates an object by rotating a rotating body containing the object. Among them, as a particularly large industrial apparatus, Patent Literature 1 discloses a rotary incinerator in which waste such as municipal waste is supplied to a rotating cylindrical furnace body and incinerated.

A rotary incinerator is provided with various rollers that support a furnace body while rotating it in the circumferential direction as part of a rotating structure. Particularly, in a rotary incinerator, the posture of the furnace body is inclined so that the inlet side to which waste is supplied is higher and the outlet side to which incinerated ash and the like is discharged is lower. For this reason, rotary incinerators use thrust rollers that restrict the movement of the furnace body in the axial direction.

JP-A-2005-114213

The furnace bodies used in rotary incinerators are large. Therefore, when an earthquake occurs and seismic force acts in the axial direction of the furnace body, an excessive load is applied to the thrust rollers. At this time, depending on the magnitude of the seismic force, the thrust rollers may not operate normally, and it may be necessary to repair or replace the thrust rollers thereafter. In particular, when the thrust rollers are repaired, it is necessary to stop the incinerator and adjust the misalignment of the incinerator depending on the situation.

Therefore, an object of the present disclosure is to provide a rotating structure and an incinerator that are advantageous for expediting recovery after an earthquake.

A rotating structure according to an aspect of the present disclosure includes a rotatable cylindrical body supported by a mount, an annular member coaxially attached to an outer peripheral wall of the cylindrical body, an annular member contacting the annular member, and an axis of the cylindrical body A thrust roller that regulates directional movement, a pedestal that holds the thrust roller, and a bolt that fixes the pedestal to the frame, wherein the bolt has a load greater than or equal to a predetermined magnitude of seismic motion, and It has the rigidity to break before the thrust roller breaks when it receives a load less than the load capacity of the thrust roller.

The rotating structure may comprise a stopper mounted on the pedestal and defining a movement area of the pedestal when the bolt breaks. The stopper may define a region of movement of the pedestal in a direction along the axial direction of the cylinder. The stopper may define a movement area of the pedestal in a direction along the mounting direction of the bolt. The rotating structure described above may include a plate that is mounted on the pedestal and on which the pedestal is mounted. The rotating structure may include a stopper mounted on the pedestal and defining a movement area of the annular member when the bolt breaks. Further, the rotating structure includes an extension member, a support base connecting one end of the extension member to the side of the pedestal, a moving body connecting the other end of the extension member to the side of the cylinder, and an outer peripheral wall of the cylinder. and an annular rail coaxially attached to and movably supporting the moving body.

Further, an incinerator according to an aspect of the present disclosure is a rotary incinerator having a rotatable cylindrical body as a furnace body, comprising a rotating structure that includes the cylindrical body and rotates the cylindrical body, The object may be a rotating structure as described above.

Advantageous Effects of Invention According to the present disclosure, it is possible to provide a rotating structure and an incinerator that are advantageous for speeding up recovery after an earthquake.

1 is a diagram showing the configuration of an incinerator according to an embodiment of the present disclosure; FIG. 1 is a partial cross-sectional view showing the configuration of a rotating structure according to an embodiment of the present disclosure; FIG. 1 is a partial side view showing the configuration of a rotating structure according to an embodiment of the present disclosure; FIG. FIG. 4 is a cross-sectional view of a moving body and annular rails in a rotating structure according to one embodiment; FIG. 4 is a perspective view of a moving body and annular rails in a rotating structure according to one embodiment; FIG. 10 is a cross-sectional view showing another configuration of the moving body and the annular rail in the rotating structure; FIG. 10 is a cross-sectional view showing another configuration of the moving body and the annular rail in the rotating structure; It is a figure explaining an example of the state of a rotating structure after an earthquake occurrence. FIG. 11 is a side view showing another configuration of the stopper in the rotary structure;

Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings. Here, the dimensions, materials, and other specific numerical values shown in the embodiment are merely examples, and do not limit the present disclosure unless otherwise specified. Elements having substantially the same function and configuration are denoted by the same reference numerals to omit redundant description, and elements that are not directly related to the present disclosure are omitted from the drawings.

Further, in the embodiments shown below, the rotating structure of the present disclosure is provided in a rotary incinerator as an industrial apparatus for incinerating waste, and a rotatable cylindrical furnace body is used as a cylindrical body. shall include The rotary incinerator is also called rotary stoker type incinerator.

FIG. 1 is a schematic cross-sectional view showing the configuration of a rotary incinerator 100 according to this embodiment. The incinerator 100 includes a rotating structure 10, a waste input unit 20, a wind box 30, a secondary combustion chamber 40, and a post-combustion device 50 according to this embodiment.

The rotating structure 10 includes a cylindrical body 11, a rotary joint 12, a turning roller 13, a driving device 14 and a thrust roller 15 (see FIG. 2). The rotating structure 10 is arranged within a cover casing 16 .

The cylindrical body 11 is a furnace body configured by arranging a plurality of water tubes 11a (see FIG. 2) extending along the axial direction at regular intervals in the circumferential direction. Incidentally, in the rotary incinerator 100, the cylindrical body 11 is sometimes called a stoker furnace. Adjacent water pipes 11a are connected to each other through fins (not shown) having a plurality of air holes formed at predetermined intervals along the axial direction of the cylindrical body 11 . In addition, the cylindrical body 11 has an inlet-side header pipe 11b which is annularly arranged to match the inlet-side opening to which the waste material W is supplied, and an annularly-arranged shape to match the outlet-side opening through which the incineration ash or the like is discharged. and outlet side header pipe 11c. One ends of the plurality of water pipes 11a communicate with the inlet-side header pipe 11b. The other ends of the plurality of water pipes 11a communicate with the outlet side header pipe 11c. The cooling water flowing from the outlet side header pipe 11c side to the inlet side header pipe 11b side through one of the water pipes 11a can return from the inlet side header pipe 11b side to the outlet side header pipe 11c side through the other water pipes 11a. can. The outlet side header pipe 11 c is connected via a double connecting pipe 17 to a rotary joint 12 installed outside the secondary combustion chamber 40 .

The rotary joint 12 is a bearing mechanism that rotatably supports the double connecting pipe 17 . The rotary joint 12 circulates cooling water for cooling the furnace body in each water pipe 11a through the double connecting pipe 17. As shown in FIG.

The cylindrical body 11 also includes a plurality of annular members 19 coaxially attached to the outer peripheral wall. For example, the cylindrical body 11 may be provided with annular members 19 at two locations, one in the vicinity of the entrance side opening to which the waste material W is supplied and the other in the vicinity of the exit side opening from which the incineration ash or the like is discharged. In addition, in the rotary incinerator 100, the annular member 19 may be called a tire.

The turning roller 13 rotatably supports the annular member 19 . In this embodiment, since there are two annular members 19 , the turning roller 13 is present every two annular members 19 .

The driving device 14 rotates the cylindrical body 11 by rotating the turning roller 13 on the inlet side to which the waste material W of the cylindrical body 11 is supplied. The driving device 14 is not limited to such a configuration. For example, an annular pin gear is coaxially attached to the outer peripheral wall of the cylindrical body 11, and the rotating gear engaged with the pin via is rotated to rotate the cylindrical body 11. It may be rotated.

Also, the turning roller 13 is supported on a frame 18 . Here, the turning rollers 13 support the cylindrical body 11 so that the cylindrical body 11 assumes an inclined posture in which the inlet side to which the waste material W is supplied is higher and the outlet side to which incinerated ash and the like are discharged is lower. That is, the turning roller 13 is installed on the base 18 so that the cylindrical body 11 can rotate in a posture in which the central axis AX is inclined at an angle θ with respect to the horizontal plane (see FIG. 3). In this embodiment, as an example, it is assumed that the surface of the mount 18 is inclined according to the inclined attitude of the cylindrical body 11 .

The thrust roller 15 contacts, for example, an annular member 19 near the opening of the cylindrical body 11 on the inlet side to which the waste material W is supplied, thereby pushing the cylindrical body 11 in the axial direction as the cylindrical body 11 tilts. Regulate movement. The thrust roller 15 is also supported on the frame 18 like the turning roller 13 . The configuration, installation position, etc. of the thrust roller 15 will be described in detail below.

The waste input section 20 includes an input hopper 21 and a dust feeder 22 . The input hopper 21 receives the waste W, which is an object to be treated, and guides the input waste W to the dust feeder 22 . The dust feeder 22 supplies the waste W sent from the input hopper 21 to the inside of the cylindrical body 11 .

The wind box 30 is installed below the cylindrical body 11 and supplies combustion air 31 toward the cylindrical body 11 . Combustion air 31 supplied from an air box 30 is introduced into the furnace through a plurality of air holes formed in the cylindrical body 11 . The wind box 30 has a divided flow path 30a that is divided into three along the axial direction of the cylindrical body 11 . Each of the three divided flow paths 30a includes a damper 32. As shown in FIG. The damper 32 adjusts the supply amount of the combustion air 31 . Although not shown, each of the three divided flow paths 30a may be further divided into a plurality of sections in the circumferential direction, and the dampers 32 may be provided in each divided section. These divisions may adjust the amount of air supplied according to the amount of waste W stagnating at the bottom of the cylindrical body 11 in the circumferential direction.

The secondary combustion chamber 40 is installed on the upper downstream side of the cylindrical body 11 and processes unburned gas. The post-combustion device 50 is installed at the lower downstream side of the cylindrical body 11 and treats unburned components in the ash.

With such a configuration, the incinerator 100 sequentially transfers the waste W supplied to the cylindrical body 11 to the downstream side while agitating it with the rotation of the cylindrical body 11, and the combustion air 31 supplied from the wind box 30. It can be incinerated through the processes of drying, thermal decomposition, and combustion.

Next, the thrust roller 15 and its additional configuration in this embodiment will be described in detail.

FIG. 2 is a schematic diagram showing a part of the rotating structure 10 including the turning roller 13 and the thrust roller 15 viewed from the axial direction of the cylindrical body 11, corresponding to the section II-II in FIG. FIG. 3 is a schematic side view showing a portion of rotating structure 10 including turning roller 13 and thrust roller 15 shown in FIG.

Here, in FIG. 2, the cylindrical body 11 is shown as an assembly of a plurality of water tubes 11a. On the other hand, in FIG. 3, the drawing of the inlet-side header pipe 11b, the driving device 14, etc. is omitted for the sake of simplification of explanation. Also, in FIG. 3, the turning roller 13 is indicated by a chain double-dashed line in order to clearly show the thrust roller 15 and its additional structure.

First, there are two turning rollers 13 for one annular member 19, as shown in FIG. For example, when viewed from the axial direction of the cylindrical body 11, the two turning rollers 13 may be arranged at an angle of about 30° with respect to a vertical line drawn vertically from the central axis AX of the cylindrical body 11. good. The thrust roller 15 may then be arranged in a region between the two turning rollers 13 and directly below the cylindrical body 11 .

Thrust roller 15 includes rotating body 60 , support portion 61 , base 62 , and reinforcing plate 63 . The material of each element constituting the thrust roller 15 is basically steel.

The rotating body 60 has a so-called truncated cone shape in which the surface that contacts the contact target is inclined with respect to the rotation axis. The support portion 61 supports the rotating body 60 so as to be rotatable about a straight line extending radially from the central axis AX of the cylindrical body 11 as a rotation axis. In the rotating body 60 supported by the support portion 61 , the top surface with the smaller surface area faces the cylindrical body 11 , and the bottom surface with the larger surface area faces the pedestal 62 . The pedestal 62 is a member that fixes the support portion 61 and is a plate that is placed on the pedestal 18 . That is, the pedestal 62 holds the thrust roller 15 as a whole. The reinforcing plate 63 is a reinforcing member for more firmly supporting the supporting portion 61 with respect to the pedestal 62 by connecting a portion thereof to the supporting portion 61 and connecting another portion thereof to the pedestal 62 . The shape, the number of installations, and the installation positions of the reinforcing plates 63 are not particularly limited.

On the other hand, the annular member 19 on the cylindrical body 11 side has an annular thrust receiver 19 a having an inclined surface that can come into contact with the rotating body 60 of the thrust roller 15 . In this case, the rotating body 60 of the thrust roller 15 is positioned on the low side of the cylindrical body 11 in the axial direction, while the thrust receiver 19a is positioned on the high side of the cylindrical body 11 in the axial direction. As a result, the thrust roller 15 can receive the force of moving the cylindrical body 11, which is a body of rotation, from the high position side to the low position side in the axial direction.

The rotating structure 10 also includes a plurality of bolts 64 for fixing the pedestal 62 to the pedestal 18 when the thrust roller 15 is supported by the pedestal 18 . In the present embodiment, the plurality of bolts 64 are arranged at four locations on the basis of the position of the support portion 61 with respect to the plane of the mount 18, but are not particularly limited. The bolt 64 has such rigidity that it breaks before the thrust roller 15 is damaged when subjected to a load greater than or equal to a predetermined magnitude of seismic motion and less than the withstand load of the thrust roller 15 .

In addition, since the bolt 64 is broken, the thrust roller 15 is released from the axial movement of the cylindrical body 11, so that the rotating structure 10 does not move the thrust roller 15 more than necessary. safety device.

For example, the rotating structure 10 is provided with a stopper 65 as an example of a safety device, which is installed on the pedestal 18 and defines a movement area of the pedestal 62 when the bolt 64 is broken. The stoppers 65 are, for example, a first stopper 65a installed on the lower position side than the pedestal 18 that defines a first movement region R1 in the inclination direction of the surface of the pedestal 18 on which the pedestal 62 is placed, and and a second stopper 65b installed on the high position side. Each of the first stopper 65a and the second stopper 65b may be a plate having one end supported by the mount 18 and the other end protruding from the surface of the mount 18 . In this case, the first stopper 65a and the second stopper 65b may each extend on the surface of the mount 18 in a direction perpendicular to the tilt direction.

Here, referring to FIG. 2, it is particularly desirable that the length L1 of the first stopper 65a in the extending direction is larger than the width of the pedestal 62. As shown in FIG. As a result, even if the pedestal 62 attempts to move to the lower position on the mount 18 due to the breakage of the bolt 64, the first stopper 65a reliably receives the pedestal 62 and prevents further movement to the lower position. can do. On the other hand, the length in the extending direction of the second stopper 65b is set so that the pedestal 62 will sway in the axial direction when the bolt 64 is broken during an earthquake, so that the thrust roller 15 or the cylindrical body 11 will not be damaged. Specified in the range. For example, the length of the second stopper 65b in the extending direction may be the same as the length L1 of the first stopper 65a in the extending direction.

Further, referring to FIG. 3, the positions of the first stopper 65a and the second stopper 65b in the inclination direction are the positions separated by a distance L2 from the nearest end of the pedestal 62 fixed with the bolt 64. do. The interval L2 is a range within which the pedestal 62 can move in the axial direction of the cylindrical body 11 when the bolt 64 is broken. That is, the interval L2 is determined in advance in the incinerator 100 so that the thrust roller 15 or the cylindrical body 11 will not be damaged during an earthquake. By determining the interval L2 in this manner, the first movement region R1 in the tilt direction of the pedestal 62 when the bolt 64 is broken is defined.

Also, the first stopper 65a and the second stopper 65b have a hook portion 66 that defines a second movement region R2 of the pedestal 62 in the direction along the mounting direction of the bolt 64 when the bolt 64 is broken during an earthquake. may The hook portion 66 formed on the first stopper 65a extends from the position supported by the pedestal 18 toward the nearest end of the pedestal 62 fixed with the bolt 64 and to the end of the pedestal 62. Stretch to cover part of the part. The same applies to the hook portion 66 formed on the second stopper 65b. In this case, the hook portion 66 formed on the first stopper 65a faces the hook portion 66 formed on the second stopper 65b. The interval between the hook portions 66 in the tilt direction of the mount 18 is smaller than the width of the pedestal 62 in the same direction. By determining the dimensions in this manner, the second movement region R2 of the pedestal 62 in the mounting direction of the bolt 64 when the bolt 64 is broken is defined. As a result, even if the bolt 64 breaks during an earthquake and the base 62 vibrates along the mounting direction of the bolt 64, the movement of the base 62 is limited to the second movement region R2. It is possible to suppress the floating and dropping from the stopper 65.例文帳に追加

According to the shape of the stopper 65 illustrated above, the movement of the pedestal 62 in the tilting direction of the pedestal 18 is limited within the first movement region R1, while the movement of the pedestal 62 in the mounting direction of the bolt 64 is the second movement. It is limited within the region R2. However, the movement of the pedestal 62 on the surface of the pedestal 18 is not restricted in the direction perpendicular to the tilt direction of the pedestal 18 . The direction in which the movement of the pedestal 62 is not restricted is the extension of the cylindrical body 11 in the circumferential direction. Therefore, even if the cylindrical body 11 continues to rotate when the bolt 64 is broken during an earthquake, the pedestal 62 moves in an unregulated direction in line with the circumferential direction of the cylindrical body 11.例文帳に追加Therefore, the pedestal 62 is prevented from being subjected to a large load, and the thrust roller 15 can be easily returned to its normal position even when the incinerator 100 is restored after an earthquake.

It should be noted that the stopper 65 does not necessarily have to be formed of a plate as illustrated. For example, the stopper 65 may be formed by processing a metal rod, or may be formed by combining a plurality of metal rods.

Further, the rotary structure 10 is mounted on the pedestal 18 and includes a plate 67 on which the pedestal 62 is mounted. The plate 67 is, for example, a stainless steel plate. As a result, when the bolt 64 breaks and the pedestal 62 moves, the frictional force between the pedestal 62 and the pedestal 18 is reduced. Impossibility can be avoided in advance.

Further, as an example of a further safety device, the rotary structure 10 includes a connection unit 70 that defines a movement area of the cylindrical body 11 with respect to the frame 18 when the bolt 64 breaks, as shown in FIG.

The connection unit 70 includes a stretching member 71 that can flexibly change its shape and stop stretching when it reaches a predetermined shape. One end of the extending member 71 is connected to the pedestal 18 side, and the other end is connected to the cylindrical body 11 side. As the extension member 71, for example, a member having rigidity capable of stopping the cylindrical body 11 moving in the axial direction, such as a metal wire, chain, or flexible shaft, can be employed. In this embodiment, as an example, the extending member 71 is assumed to be a metal wire. Also, the extension member 71 has a length that has a certain amount of slack when the incinerator 100 is in operation, with one end connected to the frame 18 side and the other end connected to the cylindrical body 11 side. The degree of slackness of the stretching member 71 will be described in detail below with reference to FIG.

The connection unit 70 also includes a support base 72 for connecting one end of the extension member 71 to the pedestal 18 side. The support base 72 is a metal fitting fixed on the base 18 existing in a fixed position. The support base 72 has, for example, a through hole 72a through which one end of the extending member 71 can be passed. The support base 72 can allow the shape change of the extension member 71 by supporting the support base 72 so that one end of the extension member 71 is in contact with the through hole 72a.

On the other hand, the connecting unit 70 includes a movable body 73 for connecting the other end of the extending member 71 to the cylindrical body 11 side, and an annular rail 74 that movably supports the movable body 73 . Since the cylindrical body 11 rotates in the circumferential direction during operation of the incinerator 100 as described above, the ends of the extension members 71 are connected to the cylindrical body 11 using metal fittings such as the supports 72. difficult. Therefore, the connection unit 70 adopts the moving body 73 and the annular rail 74 so that the position of the other end of the extending member 71 during operation of the incinerator 100 is generally fixed.

The annular rail 74 is coaxially attached to the outer peripheral wall of the cylindrical body 11 . For example, an annular rail 74 may be fitted to the inlet open end of the cylinder 11 to which the waste material W is fed, as shown in FIG.

FIG. 4 is a partially enlarged cross-sectional view of a fixed position portion of the moving body 73 in the connection unit 70, which corresponds to the IV section shown in FIG.

The annular rail 74 is, for example, a tubular body having a rectangular cross section and having an annular internal space S inside to match the overall shape. The internal space S is a transport path for the moving body 73 . That is, when compared within the same plane passing through the central axis of the annular rail 74 , the cross-sectional shape of the internal space S is larger than the cross-sectional shape of the moving body 73 . Further, the annular rail 74 has an opening groove 74a extending outward from the outer wall surface of the cylindrical body 11 along the circumferential direction. When compared within the same plane passing through the central axis of the annular rail 74 , the groove width of the opening groove 74 a is smaller than the width of the moving body 73 . Therefore, the moving body 73 is movable within the internal space S, and does not drop out of the annular rail 74 from the internal space S side through the opening groove 74a.

FIG. 5 is a perspective view of the moving body 73. FIG. FIG. 5(a) is a perspective view of the moving body 73 alone. FIG. 5B is a perspective view of the moving body 73 accommodated in the inner space S of the annular rail 74. FIG.

The moving body 73 is a plate curved along the direction of travel to match the overall shape of the inner space S, which is annular. Strictly speaking, the traveling direction is the direction in which the annular rail 74 rotates while contacting the moving body 73 which is in a substantially fixed position. Further, in the present embodiment, as an example, the moving body 73 has a shape whose traveling direction is the longitudinal direction.

The movable body 73 has a protruding portion 73a that protrudes toward the outside of the annular rail 74 through the opening groove 74a while being accommodated in the internal space S. As shown in FIG. The projecting portion 73a has, for example, a through hole 73b through which the other end of the extension member 71 can pass. As shown in FIG. 4, the projecting portion 73a supports the projecting portion 73a so that the other end of the extending member 71 is in contact with the extending member 71 via the through hole 73b, so that the projecting portion 73a can allow the shape change of the extending member 71. can. Moreover, the projecting portion 73a may use the opening groove 74a of the annular rail 74 as a guide groove, and may come into contact with either end of the opening groove 74a when the annular rail 74 rotates. As a result, contact between the extension member 71 and the end of the opening groove 74a is avoided when the annular rail 74 rotates, so that the durability of the extension member 71 can be improved.

According to such a configuration, when the incinerator 100 is in operation, the moving body 73 is positioned approximately at the lowermost portion of the inner space S of the annular rail 74, as shown in FIGS. is connected to the support base 72 on the side of the pedestal 18 via the . Specifically, even if the cylindrical body 11 rotates in the circumferential direction, the annular rail 74 in the connection unit 70 rotates following the cylindrical body 11 , but the movable body 73 does not move into the inner space S of the annular rail 74 . It slides in contact with the facing inner wall portion 74b and hardly changes its position. That is, the cylindrical body 11 is rotatably connected to the mount 18 via the connecting unit 70 .

In addition, as shown in FIG. 5(a), the moving body 73 may have chamfered portions 73c at the lower portions of both end surfaces in the traveling direction. As a result, it is possible to prevent the movable body 73 from becoming immobile due to being caught by the inner wall portion 74b when the cylindrical body 11 rotates.

The structures of the movable body 73 and the annular rail 74 included in the connecting unit 70 are not necessarily limited to the above-exemplified structures, and can be changed to the structures shown below, for example.

FIG. 6 is a cross-sectional view showing the configuration of a moving body 80 that replaces the moving body 73 described above. The moving body movably supported by the annular rail 74 may be a moving vehicle having a rotating body that makes rotational contact with the inner wall portion 74b. For example, as shown in FIG. 6, the moving body 80 has a plurality of rotating balls 81 as bearing balls, and moves smoothly with respect to the annular rail 74 while contacting the inner wall portion 74b via the rotating balls 81. It may be something to do. In the same manner as the moving body 73, the moving body 80 has a protruding portion 80a that protrudes toward the outside of the annular rail 74 through the opening groove 74a in a state that the moving body 80 is accommodated in the internal space S. Further, similarly to the projecting portion 73a, the projecting portion 80a has a through hole 80b through which the other end of the extending member 71 can pass. Alternatively, although not shown, for example, the moving body may further have a rotating roller that contacts the inner wall portion 74b.

FIG. 7 is a cross-sectional view showing the configuration of a linear bearing 85 that replaces the combination of the moving body 73 and annular rail 74 described above. In this case, the linear bearing 85 includes an annular rail 86 as a guide instead of the annular rail 74 and a moving body 87 as a block movably supported by the annular rail 86 . The moving body 87 can move smoothly with respect to the annular rail 86 while contacting the annular rail 86 via the plurality of balls. When the linear bearing 85 is employed in this manner, the annular rail 86 differs from the annular rail 74 in that it does not have an internal space S and uses the outer wall portion as a transport path for the moving body 87 . Further, similarly to the moving body 73 , the moving body 87 has a protruding portion 87 a that protrudes toward the outside on the opposite side of the annular rail 86 . Further, similarly to the projecting portion 73a, the projecting portion 87a has a through hole 87b through which the other end of the extending member 71 can pass.

In order to accommodate the moving body 73 in the internal space S, the annular rail 74 has a lid part 74c formed in accordance with the overall shape of the moving body 73 as shown in FIG. 5(b). You may The lid portion 74c is attached to the main body of the annular rail 74 using, for example, bolts (not shown). As a result, even when the moving body 73 needs to be replaced due to aged deterioration or the like, the operator can easily replace the moving body 73 by removing the cover portion 74c.

Next, the basic actions of the rotating structure 10 and the incinerator 100 according to the present embodiment, particularly when an earthquake occurs, will be described.

FIG. 8 is a diagram illustrating an example of the state of the rotating structure 10 after the occurrence of an earthquake with respect to the state of the rotating structure 10 before the occurrence of the earthquake shown in FIG.

When an earthquake occurs and a seismic force acts on the cylindrical body 11, an excessive load is applied to the thrust roller 15. - 特許庁Here, in the present embodiment, the pedestal 62 of the thrust roller 15 is fixed to the pedestal 18 with bolts 64 . Further, the bolt 64 breaks before the thrust roller 15 is damaged when subjected to a load equal to or greater than the load due to the seismic motion of a predetermined magnitude and equal to or less than the withstand load of the thrust roller 15 . The magnitude of the load due to seismic motion, which serves as a criterion for breaking the bolt 64, can be arbitrarily determined. On the other hand, the bolts 64 are stiff enough not to break during a small to moderate earthquake. After the bolt 64 is broken by a large-scale earthquake, the thrust roller 15 vibrates with the shaking of the earthquake. Finally, as shown in FIG. It moves along the axial direction of the cylindrical body 11 , that is, along the inclination direction of the surface of the pedestal 18 .

Further, after the bolt 64 is broken, the thrust roller 15 moves along the tilting direction of the pedestal 18. Since the first stopper 65a exists downstream in the tilting direction, the pedestal 18 will eventually reach the first stopper 65a. and is prevented from moving further downstream.

Furthermore, after the bolt 64 is broken, the cylindrical body 11 connected to the thrust roller 15 via the annular member 19 also moves in the axial direction as the thrust roller 15 moves. Here, the cylindrical body 11 is connected to the frame 18 by the connecting unit 70 independently of the thrust roller 15 . In the connecting unit 70, the extending member 71 is initially connected to the pedestal 18 side and the cylindrical body 11 side with a certain amount of slack. Therefore, after the bolt 64 is broken, the extending member 71 is pulled toward the cylindrical body 11 as the cylindrical body 11 moves along the axial direction, and when it becomes tight, the cylindrical body 11 moves further to the low position side. deter That is, the position of the cylindrical body 11 when the extending member 71 is stretched is the maximum axial movement area of the cylindrical body 11 . Therefore, the length of the extension member 71 considering the amount of slack during operation of the incinerator 100 is the length of the extension member 71 in the axial direction of the cylindrical body 11 when the extension member 71 is pulled along with the movement of the cylindrical body 11 in the axial direction. It is defined based on the maximum movement area in which movement is allowed.

Next, the effects of the rotating structure 10 and the incinerator 100 according to this embodiment will be described.

First, a rotating structure 10 according to this embodiment includes a rotatable cylindrical body 11 supported by a frame 18 and an annular member 19 coaxially attached to the outer peripheral wall of the cylindrical body 11 . The rotary structure 10 also includes a thrust roller 15 that contacts the annular member 19 and regulates axial movement of the cylindrical body 11 , a pedestal 62 that holds the thrust roller 15 , and the pedestal 62 fixed to the mount 18 . A bolt 64 is provided. The bolt 64 has such rigidity that it breaks before the thrust roller 15 is damaged when subjected to a load greater than or equal to a predetermined magnitude of seismic motion and less than the withstand load of the thrust roller 15 .

Here, conventionally, since the thrust rollers are firmly fixed to the base 18, if a force larger than the withstand load is applied to the thrust rollers, there is a risk that a part of the thrust rollers will be damaged. If the thrust roller is damaged, the thrust roller must be replaced, and the restoration work of the rotating structure 10 and the incinerator 100 is prolonged.

In contrast, according to the rotating structure 10, the bolt 64 breaks before the thrust roller 15 breaks after an earthquake occurs. Breakage of the bolt 64 allows the thrust roller 15 to move on the surface of the frame 18, and as a result, the force applied to itself can be reduced. Therefore, even if a large-scale earthquake occurs, the risk of damage to the thrust rollers 15 can be reduced in advance. As a result, when the worker restores the rotating structure 10 after an earthquake occurs, the necessity of replacing the thrust rollers 15 or the like is reduced, so that the restoration work of the rotating structure 10 can be avoided from prolonging.

Thus, according to this embodiment, it is possible to provide the rotating structure 10 that is advantageous for speeding up recovery after an earthquake.

It should be noted that, as described above, the bolt 64 will not break if the earthquake that has occurred is of a small to medium scale. In other words, when an earthquake of that magnitude occurs, the bolts 64 can keep the thrust rollers 15 fixed to the frame 18 as usual, thereby preventing the thrust rollers 15 from slipping or the like. .

Further, the rotating structure 10 according to the present embodiment may include a stopper 65 that is installed on the base 18 and defines a movement area of the pedestal 62 when the bolt 64 is broken.

According to such a rotary structure 10, it is possible to prevent the thrust roller 15 from moving more than necessary after the bolt 64 is broken.

Further, in the rotating structure 10 according to the present embodiment, the stopper 65 may define a movement area of the pedestal 62 in a direction along the axial direction of the cylindrical body 11 . The moving region here corresponds to, for example, the first moving region R1 illustrated above.

According to this rotating structure 10, even if the base 62 tries to move to the low position side on the mount 18 after the bolt 64 is broken, the stopper 65 moves to the low position side beyond the position of the stopper 65. can be deterred. Further, the stopper 65 can limit the axial shaking of the pedestal 62 during an earthquake, for example, within a range that does not cause damage to the thrust roller 15 or the cylindrical body 11 or the like.

Further, in the rotating structure 10 according to the present embodiment, the stopper 65 may define a movement area of the pedestal 62 in a direction along the mounting direction of the bolt 64 . The moving region here corresponds to, for example, the second moving region R2 illustrated above.

According to the rotating structure 10, the stopper 65 prevents the pedestal 62 from rising from the mount 18 and falling off even if the pedestal 62 vibrates in the mounting direction of the bolt 64 after the bolt 64 is broken. can be suppressed.

Further, the rotating structure 10 according to the present embodiment may include a plate 67 mounted on the pedestal 18 and on which the pedestal 62 is mounted.

According to the rotating structure 10, the frictional force between the pedestal 62 and the pedestal 18 when the pedestal 62 is moved by breaking the bolt 64 is reduced. Impossibility of further movement can be avoided in advance.

Further, the rotary structure 10 according to this embodiment may include a stopper 90 that defines a movement area of the annular member 19 when the bolt 64 is broken.

FIG. 9 is a side view showing the configuration of a stopper 90 that replaces the stopper 65 in the rotating structure 10. As shown in FIG. In the above description, the configuration in which the stopper 65 is installed on the frame 18 in order to prevent the thrust roller 15 from moving more than necessary after the bolt 64 is broken has been exemplified. In contrast, the rotary structure 10 of the present disclosure is not limited to this, and a stopper 90 as shown in FIG. 9 can be employed. The stopper 90 is installed on the pedestal 18, for example. Further, the end portion 90a of the stopper 90 is located at a position spaced in the axial direction of the cylindrical body 11 from a portion of the annular member 19 during normal operation by a distance L2. This interval L2 is the same as the interval L2 defined for the stopper 65 illustrated above. In other words, by determining the interval L2 in this manner, the movement area of the cylindrical body 11 in the axial direction when the bolt 64 is broken is defined. In FIG. 9, as an example, the stopper 90 exists only on the low axial side of the cylindrical body 11. However, similar to the stopper 65, it may also exist on the high axial side. good.

According to this rotating structure 10, similarly to the stopper 65, it is possible to prevent the thrust roller 15 from moving more than necessary after the bolt 64 is broken.

Further, the rotating structure 10 according to the present embodiment includes an extension member 71, a support base 72 connecting one end of the extension member 71 to the pedestal 18 side, and the other end of the extension member 71 connected to the cylindrical body 11 side. You may provide the moving body 73 which carries out. Further, the rotating structure 10 may be provided with an annular rail 74 that is coaxially attached to the outer peripheral wall of the cylindrical body 11 and that supports the moving body 73 movably.

According to this rotating structure 10, even if the cylindrical body 11 moves to a particularly low position side in the axial direction after the bolt 64 is broken, the extension member 71 pulls the cylindrical body 11 toward the base 18 side, Further movement of the cylindrical body 11 can be restrained when it is tense.

Furthermore, the rotary incinerator 100 having the rotatable cylindrical body 11 as the furnace body according to the present embodiment may include the rotating structure 10 that includes the cylindrical body 11 and rotates the cylindrical body 11. .

According to this embodiment, since the above-described rotating structure 10 is provided, it is possible to provide an incinerator 100 that is advantageous for speeding up recovery after an earthquake, as with the effects of the rotating structure 10 described above. can.

In the above description, the cylindrical body 11 is assumed to be rotatable with the central axis AX inclined with respect to the horizontal plane. However, the rotating structure 10 of the present disclosure is not limited to the case where the cylindrical body 11 is in such an inclined posture. That is, the cylindrical body 11 may be arranged horizontally such that the axial direction is the horizontal axis. When the cylindrical body 11 is horizontally arranged, the thrust rollers 15 are arranged on both sides of the annular member 19 in the axial direction of the cylindrical body 11 so as to sandwich the annular member 19 . may be installed. With such a configuration, even if the cylindrical body 11 tries to move horizontally during an earthquake, the risk of the thrust rollers 15 being damaged can be reduced in advance.

Further, the rotary structure 10 is provided in a rotary incinerator 100 as an industrial apparatus for incinerating the waste W, and includes a rotatable cylindrical furnace body as the cylindrical body 11 . However, the rotating structure of the present disclosure is not limited to being applied to the incinerator 100, and can also be employed in other industrial devices with rotatable cylinders, such as rotary kilns.

Although preferred embodiments of the present disclosure 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.

10 Rotating structure 11 Cylindrical body 15 Thrust roller 18 Base 19 Annular member 62 Pedestal 64 Bolt 65 Stopper 67 Plate 71 Extension member 72 Support base 73 Moving body 74 Annular rail 100 Incinerator R1 First movement area R2 Second movement area

Claims (7)

a rotatable cylindrical body supported by a pedestal;
an annular member coaxially attached to the outer peripheral wall of the cylindrical body;
a thrust roller that contacts the annular member and restricts axial movement of the cylindrical body;
a pedestal holding the thrust roller;
a bolt for fixing the pedestal to the pedestal;
a stretching member;
a support that connects one end of the extension member to the side of the pedestal;
a moving body that connects the other end of the extending member to the side of the cylindrical body;
an annular lever that is coaxially attached to the outer peripheral wall of the cylindrical body and movably supports the moving body;
and
with
The bolt has a rigidity such that it breaks before the thrust roller is damaged when subjected to a load equal to or greater than a predetermined magnitude of seismic motion and equal to or less than the withstand load of the thrust roller. thing. 2. The rotating structure according to claim 1, further comprising a stopper installed on said pedestal and defining a movement area of said pedestal when said bolt is broken. 3. The rotary structure according to claim 2, wherein said stopper defines a movement area of said pedestal in a direction along the axial direction of said cylindrical body. 4. The rotary structure according to claim 2, wherein said stopper defines a movement area of said base in a direction along the mounting direction of said bolt. The rotating structure according to any one of claims 1 to 4, further comprising a plate mounted on said base and on which said pedestal is mounted. 2. The rotating structure according to claim 1, comprising a stopper that defines a movement area of said annular member when said bolt breaks. A rotary incinerator having a rotatable cylindrical body as a furnace body,
A rotating structure that includes the cylindrical body and rotates the cylindrical body,
An incinerator, wherein the rotating structure is the rotating structure according to any one of claims 1 to 6 .

Images