JP2019045022A - Rotary structure - Google Patents

Abstract

To provide a rotary structure in which connection devices can absorb a thermal expansion difference between a furnace body and a tire without depending on the bending deformation of members.SOLUTION: Provided is a rotary structure comprising: a furnace body 2; a tire 3; and a plurality of connection devices 4 arranged in a circumferential direction in a gap 10 between the furnace body 2 and the tire 3. The connection device 4 includes: a connection member 13 arranged along a string direction at the inside of the tire 3; a bracket 12 fitted to an inner circumferential face of the tire 3 and holding both edge sides of the connection member 13; a locking part 14 projected at a central part in a longitudinal direction of the connection member 13 toward a central direction of the tire 3; and a load transmission part 11 having walls 19a, 19b closely arranged on both sides in a circumferential direction of the furnace body 2 to the locking part 14 and fitted to an outer circumferential face of a circumferential wall 9 of the furnace body 2. When the furnace body 2 is thermally expanded to increase diameter dimensions, absorption is caused by relatively displacing the locking part 14 in a radial direction at the insides of the walls 19a, 19b of the load transmission part 11.SELECTED DRAWING: Figure 4

Description

  The present invention relates to a rotary structure having a cylindrical body disposed laterally and an annular body attached to the outer periphery of the body, with the body rotatably supported via the annular body. It is.

  A rotary stoker type incinerator is known as an apparatus for incinerating wastes and the like.

  The rotary stoker type incinerator has a configuration in which a cylindrical furnace body is disposed sideways in an inclined posture at an angle set in the axial direction.

  In the furnace body, a tire, which is a metal annular body, is attached to the outer periphery of both ends in the axial direction, and each tire is mounted on the upper side of a rotation support device such as a roller. Thereby, the furnace body is rotatably supported on the rotary support device via the tire.

  By the way, in the rotary stoker type incinerator, the furnace body is affected by the combustion heat of the incinerator during operation, and the diameter of the furnace body increases due to thermal expansion as compared with the initial state before the operation.

  On the other hand, since the tire is not directly affected by the heat of combustion and is likely to be cooled by contact with the outside air, the increase in diameter due to thermal expansion of the tire is larger than the increase in diameter of the furnace body. Small.

  Therefore, usually, a connecting device having a function of absorbing the thermal expansion difference is provided between the furnace body and the tire, and the connecting device rotates the furnace body and the tire together. It is carried out to absorb the difference in deformation due to the thermal expansion difference between the furnace body and the tire.

  Conventionally, a spring assembly has been proposed as this type of connection device (see, for example, Patent Document 1).

  In this spring assembly, in a configuration in which the tire is disposed with a gap on the outer periphery of the furnace body, the longitudinal middle portion of the spring member extending in the tangential direction is attached to the outer peripheral surface of the furnace body by welding or bolting It is done. Further, both longitudinal end portions of the spring member are rotatably (pivotable) attached to clevis members provided circumferentially at intervals on the inner circumferential surface of the tire.

  According to the spring assembly of this configuration, the furnace body and the tire can be rotated together since they are connected via the spring member. In addition, it is supposed that the thermal expansion difference between the furnace body and the tire can be coped with by deformation such as bending or bending of the spring member.

JP-A-9-170734

  By the way, in the thing shown by patent document 1, if a thermal expansion difference arises in a furnace body and a tire, a spring member will attach a longitudinal direction middle part attached to a furnace body to a peripheral direction rather than a longitudinal direction both ends. Because it is pushed, it always stays bent.

  In this state, the spring member moves in the circumferential direction along with the rotation of the furnace body and the tire. At this time, when the spring member is positioned at the lower end side in the circumferential direction, the longitudinal intermediate portion of the spring member is By receiving the weight of the furnace body, it is further pushed downward, that is, in the circumferential direction. On the other hand, when the spring member is positioned on the upper end side in the circumferential direction, the longitudinal middle portion of the spring member is pulled downward, that is, to the inner peripheral side by receiving the weight of the furnace body.

  Furthermore, when the spring member is located at the side in the circumferential direction, the spring member remains in the bent state and is subjected to the action of a force including a downward component at the longitudinal intermediate portion due to the weight of the furnace body.

  Therefore, when the spring member moves in the circumferential direction, the state of bending deformation is not constant, and bending is constantly repeated. Furthermore, the spring member is bent in a longitudinal middle portion attached to the furnace body, a portion positioned closer to one end than the longitudinal middle portion, and a portion positioned closer to the other end. There are also differences.

  Therefore, in the conventional spring assembly, the fatigue of the spring member repeating the increase and decrease of bending deformation is large, and the stress acting on the attachment portion of the spring member to the furnace body is also large. Therefore, it is difficult to improve the durability of this spring assembly.

  Therefore, the present invention comprises a cylindrical main body disposed laterally as in a furnace body and a tire in a rotary stoker furnace, and an annular body disposed on the outer periphery of the main body, and the main body and the annular body A rotating structure provided with a connecting device having a function of connecting the main body and the annular body so as to rotate together and absorbing a thermal expansion difference between the two, the connecting device comprising the main body and the annular body It is an object of the present invention to provide a rotary structure capable of absorbing the thermal expansion difference generated in the above without depending on the bending deformation of the member, and improving the durability of the connecting device.

  In order to solve the above problems, the present invention provides a cylindrical main body disposed laterally, an annular body disposed with a gap on the outer periphery of the main body, and a space between the main body and the annular body. A connecting member, the connecting device extending in a direction along the chord of the annular body, both ends corresponding to a connecting member attached to the annular body, and a central longitudinal portion of the connecting member It arrange | positions in the position, It arrange | positions on the both sides of the circumferential direction of the said main body with respect to the latching | locking part attached to either the outer peripheral surface of the said main body and the said connection member, and the said latching | locking part. The rotary structure has a structure including a wall and a load transfer portion attached to the outer peripheral surface of the main body and any other of the connection members.

  The locking portion has a configuration provided with flat wall surfaces on both end sides in the circumferential direction of the main body, and the load transmitting portion is disposed such that the wall faces the wall surface of the locking portion It is as composition which has composition.

  The load transfer unit has a configuration in which both end sides of the wall are connected by a wall along a plane perpendicular to the axial direction of the furnace body.

  The main body is a furnace body including a peripheral wall formed in a cylindrical shape by furnace wall tubes arranged at intervals set in a circumferential direction, and fins attached between the adjacent furnace wall pipes. The annular body is a tire disposed on the outer periphery of the furnace body, and the locking portion or the load transfer portion attached to the outer peripheral surface of the furnace body is a plurality of hearth tubes in the peripheral wall of the furnace body and The leg member is in contact with the outer surface of the plurality of fins.

  According to the rotary structure of the present invention, the thermal expansion that occurs in the main body and the annular body is provided with a coupling device provided between the cylindrical body disposed in the lateral direction and the annular body disposed on the outer periphery of the main body. The difference can be absorbed regardless of the bending deformation of the members, and the durability of the connecting device can be improved.

FIG. 5 is a schematic side view illustrating an embodiment of a rotating structure. It is an AA arrow direction view of FIG. It is a BB direction arrow enlarged view of FIG. It is a figure which expands and shows the connection apparatus of the state located under the furnace body. It is a figure which further expands and shows the principal part of the connection apparatus of FIG. It is a figure which expands and shows the connection apparatus of the state located in the side of a furnace body. It is a schematic perspective view which expands and shows the load transmission part in a connection apparatus.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIGS. 1 to 7 show an example applied to a rotary structure provided with a furnace body and a tire in a rotary stoker type incinerator as an embodiment of the rotary structure according to the present invention.

  FIG. 1 is a schematic side view showing the rotary structure of the present embodiment. FIG. 2 is a view taken in the direction of arrows AA in FIG. 1, and FIGS. 2 (a) and 2 (b) are diagrams showing examples in which the numbers arranged in the circumferential direction of the connecting device are different. FIG. 3 is an enlarged view in the direction of arrows B-B in FIG.

  FIG. 4 is an enlarged view of the coupling device in a state of being located below the furnace body, and FIG. 4 (a) is a view of a part cut away and viewed from one side in the axial center direction of the furnace body. 4 (b) is a view on arrow C-C in FIG. 4 (a). FIG. 5 is a diagram further enlarging and showing the main part of the connecting device in FIG. 4 (a). FIG. 6 is an enlarged view of the coupling device in the state of being located to the side of the furnace body, and is a view corresponding to FIG. FIG. 7 is a schematic perspective view showing a load transfer unit in the connecting device.

  The rotary structure of this embodiment is shown by reference numeral 1 in FIG. 1 and FIGS. 2 (a) and 2 (b), and includes a cylindrical main body disposed laterally and an annular body disposed on the outer periphery of the main body. As, for example, the cylindrical furnace body 2 in the rotary stoker type incinerator, and the tire 3 disposed on the two outer circumferences near both ends in the axial direction of the furnace body 2 are provided. Furthermore, the rotary structure 1 of the present embodiment connects the furnace body 2 and the tire 3 together so as to rotate together between the furnace body 2 as the cylindrical main body and the tire 3 as the annular body, and A connecting device 4 having a function of absorbing the thermal expansion difference between the furnace body 2 and the tire 3 is provided.

  As shown in FIGS. 1 and 3, the furnace body 2 is circumferentially arranged between a pair of ring-shaped header pipes 5 and 6 coaxially arranged at set intervals and the respective header pipes 5 and 6. It is formed in a cylindrical shape by a plurality of furnace wall tubes 7 arranged at intervals set in the above and fins 8 attached between adjacent furnace wall tubes 7. Therefore, the peripheral wall 9 of the furnace body 2 has a construction in which the furnace wall tubes 7 and the fins 8 are alternately arranged. The fins 8 are provided with air holes (not shown).

  The tire 3 is configured to have a large inner diameter by a dimension set than the outer diameter of the furnace body 2 as shown in FIGS. 2 (a) and 2 (b). Thus, a gap 10 is formed between the outer peripheral surface of the peripheral wall 9 of the furnace body 2 and the inner peripheral surface of the tire 3 disposed on the outer periphery over the entire circumference in the circumferential direction. For this reason, in the rotary structure 1 of the present embodiment, the circumferential direction of the furnace body 2, the circumferential direction of the tire 3, and the circumferential direction of the gap 10 are basically the same direction. The heart direction and the axial direction of the tire 3 are also basically the same. In FIGS. 2 (a) and 2 (b), for convenience of illustration, the peripheral wall 9 of the furnace body 2 omits the description of the furnace wall tube 7 and the fins 8, and is simplified and shown as a simple cylindrical structure. The same applies to FIG. 4 (a), FIG. 5, FIG. 6, and FIG.

  As shown in FIGS. 2 (a) and 2 (b), a plurality of coupling devices 4 are provided in the circumferential direction and arranged in the gap 10 between the furnace body 2 and the tire 3. As shown in FIG. FIG. 2 (a) shows, as an example, a configuration example provided with eight coupling devices 4 in the circumferential direction, and FIG. 2 (b), as an example, configuration provided with ten coupling devices 4 in the circumferential direction An example is shown. Of course, the number of coupling devices 4 arranged in the circumferential direction in the gap 10 may be appropriately set to a number other than that illustrated depending on the size and weight of the furnace body 2, and even numbers Of course, the number is not limited to the number but may be an odd number.

  Next, a specific configuration of the coupling device 4 will be described.

  As shown in FIGS. 4 (a) and 4 (b) and FIG. 5, the connecting device 4 includes a bracket 12 attached to the inner peripheral surface of the tire 3, a connecting member 13 and a locking portion 14, and a peripheral wall 9 of the furnace body 2. And a load transfer unit 11 attached to the outer peripheral surface of the unit.

  Inside the tire 3, a bracket 12 is disposed in a range corresponding to an angle obtained by dividing 360 degrees by the number of arrangements of the coupling device 4 in the circumferential direction, and between the brackets 12, along the chord direction of the tire 3 An extending connecting member 13 is disposed.

  Both ends in the longitudinal direction of the connecting member 13 are attached to a bracket 12 provided on the inner peripheral surface of the tire 3 by bolts 15 and nuts 16 along the axial center direction of the tire 3. Thereby, in the connection device 4 when the load acting from the furnace body 2 is transmitted to the tire 3 as will be described later, when the connection member 13 is bent in the bending direction, the end of the connection member 13 centers the bolt 15 The angle changes with respect to the bracket 12 as. Therefore, excessive stress is not generated in the connection portion between the connection member 13 and the bracket 12.

  The locking portion 14 is attached to an intermediate portion in the longitudinal direction of the connecting member 13 so as to protrude in the direction of the center of the tire 3.

  As shown in FIG. 5, the locking portion 14 is configured to have flat wall surfaces 17 a and 17 b on both end sides in a direction along the circumferential direction of the tire 3. The wall surfaces 17 a and 17 b are arranged substantially parallel to a plane along the radial direction of the tire 3 and the axial direction of the tire 3. The reason why the locking portion 14 includes the wall surfaces 17a and 17b is that the locking portion 14 and the load transfer portion 11 when the lock portion 14 receives a load from the load transfer portion 11, as described later. The stress concentration is avoided by increasing the contact area with the

  In the present embodiment, as shown in FIG. 4B, the locking portion 14 is a flat wall surface in which both ends in the axial direction of the tire 3 in the locking portion 14 are perpendicular to the axial direction of the tire 3. 18a and 18b. Thus, the locking portion 14 in the present embodiment has a rectangular outer shape.

  From the viewpoint of making the locking portion 14 replaceable, it is preferable that the locking portion 14 be attached to a middle portion in the longitudinal direction of the connecting member 13 with a bolt and a nut, but welding or other Of course, it may be fixed to the connecting member 13 by fixing means.

  The load transfer portion 11 is disposed to face the wall surfaces 17a and 17b of the locking portion 14 provided on the tire 3 side, as shown in FIG. 4A and FIG. It is set as the structure provided with a pair of wall 19a, 19b extended.

  At this time, as shown in FIG. 5, the distance a between the wall 19a and the wall 19b in the load transfer unit 11 is a set dimension compared to the distance b from the wall surface 17a of the locking portion 14 to the wall surface 17b. , Are set in large dimensions. Thus, the connection device 4 is configured to have a gap in the circumferential direction of the furnace body 2 between the load transfer portion 11 and the locking portion 14 disposed inside the load transfer portion 11.

  Furthermore, in the present embodiment, as shown in FIG. 7, the load transfer unit 11 includes the wall 20a and the wall 20b along a plane perpendicular to the axial center direction of the furnace body 2 at both ends of the wall 19a and the wall 19b. It is considered to be connected. Therefore, the load transfer unit 11 in the present embodiment has a rectangular cylindrical shape extending along the radial direction of the furnace body 2. As described above, the load transmitting portion 11 is formed into a rectangular cylindrical structure by applying a load received by either one of the wall 19a and the wall 19b to the other of the wall 19a and the wall 19b via the walls 20a and 20b. Since it can be transmitted and received, it becomes an advantageous configuration in order to improve load bearing performance of the load transfer portion 11.

  The load transfer portion 11 is attached to the outer peripheral surface of the peripheral wall 9 of the furnace body 2 at the base end side.

  Under the present circumstances, although not shown in figure, the load transfer part 11 is based on the uneven | corrugated shape currently formed by the furnace wall pipe 7 and the fins 8 (refer FIG. 3) in the outer peripheral surface of the surrounding wall 9 of the furnace body 2 at base end. What is necessary is to attach to the outer peripheral surface of the surrounding wall 9 in the state made to contact the outer surface of the furnace wall pipe 7 and the fin 8 as a structure provided with complementary uneven | corrugated shape.

  Further, in the present embodiment, the distance c (see FIG. 7) between the wall 20a and the wall 20b in the load transfer unit 11 and the distance d (see FIG. 4 (b)) from the wall 18a to the wall 18b of the locking portion 14 are , Is set as follows.

  That is, the furnace body 2 causes deformation extending in the axial direction due to thermal expansion accompanying temperature change from the normal temperature state to the operation time of the rotary stoker type incinerator.

  On the other hand, the rotary structure 1 of the present embodiment is used in a state where the tire 3 is placed on the upper side of a rotary support device 21 such as a roller shown by a two-dot chain line in FIG. However, between the tire 3 and the rotary support device 21, the weight of the rotary structure 1 of the present embodiment and the weight of the fuel charged into the inside of the furnace body 2 and the weight of the other combustion object cause a large friction. Force works. For this reason, the tire 3 does not cause relative displacement in the axial direction with respect to the rotation support device 21.

  Therefore, in each of the connecting devices 4 disposed at two places near the both ends in the axial center direction of the furnace body 2, the axis of the furnace body 2 is fixed with respect to the tire 3 fixed in position according to the arrangement of the rotary support device 21. There is a need for a function that allows for the expansion deformation that accompanies thermal expansion in the cardiac direction.

  Although not shown, the furnace body 2 is generally provided with a restraint device at one location in the axial direction for restraining free movement of the furnace body 2 in the axial direction.

  Therefore, in the connecting device 4, the value (c−d) of the difference (c−d) between the distance c between the wall 20 a and the wall 20 b in the load transfer unit 11 and the distance d from the wall 18 a to the wall 18 b of the locking unit 14 is It is set so as to be equal to or greater than the deformation amount of the expansion deformation due to the thermal expansion assumed in the portion located between the restraint device and the mounting position of the connection device 4 in 2. In addition, even if any one of the connecting device 4 attached near one end in the axial direction of the furnace body 2 or the connecting device 4 attached near the other end in the axial direction also serves as the restraint device. Of course it is good.

  The rotary structure 1 of the present embodiment uses the tire 3 mounted on the upper side of the rotary support device 21 as shown in FIG. 1 and FIGS. 2 (a) and 2 (b). Therefore, since the tire 3 is supported from below by the rotary support device 21, vertical displacement is prevented. On the other hand, the furnace body 2 is supported on the inside of the tire 3 via the connection device 4, but at this time, the furnace body 2 tends to be displaced downward as much as possible by gravity. Therefore, the gap 10 between the furnace body 2 and the tire 3 is the narrowest at the lower end side in the circumferential direction and the widest at the upper end side.

  Furthermore, if the diameter of the furnace body 2 increases due to the thermal expansion of the furnace body 2 along with the operation of the rotary stoker type incinerator, the thermal expansion difference with the tire 3 becomes large. The clearance 10 between the tire 2 and the tire 3 is narrowed.

  In view of this point, the coupling device 4 is engaged even when it is positioned on the lower end side in the circumferential direction as shown in FIG. 5 when the furnace body 2 is in a state of thermal expansion. The protruding end of the portion 14 does not contact the peripheral wall 9 of the furnace body 2 at the back side of the load transfer portion 11, and the end on the protrusion side in the outer peripheral direction of the load transfer portion 11 is the connecting member 13. The arrangement and dimensions of each part, and the clearance between each part are set so as not to contact them.

  Furthermore, although not shown, the connecting device 4 is located at the upper end side in the circumferential direction when the furnace body 2 is in the normal temperature state, that is, when the furnace body 2 is contracted. The arrangement and dimensions of the locking portion 14 and the load transfer portion 11 are set such that the state in which the tip end side of the locking portion 14 is inserted into the load transfer portion 11 is maintained.

  Therefore, when manufacturing the rotary structure 1 of the present embodiment, the connecting member 13 and the locking portion 14 provided on the tire 3 side and the load transfer portion 11 provided on the furnace body 2 side in the connecting device 4 Alignment is important.

  Therefore, in the present embodiment, the connecting member 13 in the connecting device 4 is, for example, as shown in FIGS. 4A and 4B, the intermediate member 22 to which the locking portion 14 is attached in advance and the bracket 12 It is set as the structure provided with two end members 23 provided with the bolt insertion hole which is not shown which performs attachment.

  Long holes (not shown) along the longitudinal direction of the connecting member 13 are provided on both end sides of the intermediate member 22 in the longitudinal direction, and before installation of the connecting member 13, each end member 23 is bolted and nutted in the long hole. Fix loosely using.

  Furthermore, a position adjusting device 24 is provided between the intermediate member 22 and each end member 23 for adjusting the relative position of the connecting member 13 in the longitudinal direction by using the tightening force of a bolt and a nut. Configure

  The connecting member 13 having the above configuration is used in the corresponding two brackets 12 when constructing the connecting device 4 with the gap 10 between the furnace body 2 and the tire 3 at the manufacturing site of the rotary structure 1 of the present embodiment. Attach the end member 23. Next, in the connecting member 13, the position adjusting device 24 is used to align the locking portion 14 and the intermediate member 22 with the load transfer portion 11 previously attached to the furnace body 2, and then, The intermediate member 22 and each end member 23 may be fixed by bolts and nuts. Furthermore, the intermediate member 22 and each end member 23 may be fixed by welding.

  Therefore, in the present embodiment, the position alignment between the connection member 13 and the locking portion 14 provided on the tire 3 side and the load transfer unit 11 provided on the furnace body 2 side is easily performed on the site by the connection device 4. be able to.

  4 (a) and 4 (b), in the connecting device 4, the intermediate member 22 is a flat member disposed parallel to the axial center direction of the furnace body 2, and each end member 23 is a member of the intermediate member 22. A configuration in which both end sides in the longitudinal direction are sandwiched from both sides in the direction along the radial direction of the furnace body 2, and the intermediate member 22 and each end member 23 are connected by bolts and nuts in the direction along the radial direction of the furnace body 2 An example is shown. However, as a matter of course, the shapes and connecting structures of the intermediate member 22 and the end members 23 in the connecting device 4 may be other than those shown in FIGS. 4 (a) and 4 (b). For example, although not shown, each end member 23 is a flat member disposed along a plane perpendicular to the axial direction of the furnace body 2, and the intermediate member 22 is an end portion of each end member 23 Even if the intermediate member 22 and each end member 23 are connected by a bolt and a nut in a direction along the axial direction of the furnace body 2, the intermediate member 22 and each end member 23 are connected. Good.

  Furthermore, as shown in FIG. 4B, it is preferable that the connecting devices 4 adjacent in the circumferential direction share the bracket 12 provided on the inner peripheral surface of the tire 3 and to which the connecting member 13 is attached. In this case, the connection devices 4 arranged in the circumferential direction may be arranged in a staggered manner in which the arrangement in the axial direction of the furnace body 2 is alternately shifted. In this way, the number of brackets 12 provided on the inner peripheral surface of the tire 3 can be reduced, and the tire 3 can be reinforced by the connecting members 13 arranged like a chord over the entire circumference. . Of course, the connecting devices 4 arranged in the circumferential direction may be provided with individual brackets 12 respectively.

  In FIG. 1, reference numeral 25 denotes a ring gear (sprocket) disposed on the outer periphery of the furnace body 2 near one end in the axial direction and attached to the side surface of the tire 3. Thus, the rotary structure 1 of the present embodiment is rotationally driven by rotationally driving through the chain.

  When a rotary stoker type incinerator is constructed using the rotary structure 1 according to this embodiment having the above configuration, the furnace body 2 is placed on the outlet side of the one header tube 5 on the inlet side. The tire 3 is placed on the rotation support device 21 by tilting it horizontally so that the header tube 6 is lower. Furthermore, although not shown, the furnace body 2 is disposed in the cover casing, and a lower portion of the furnace body 2 is provided with a wind box communicating with the lower end of the cover casing. Furthermore, boiler water is circulated through the furnace wall pipes 7 of the furnace body 2. The inlet side of the furnace body 2 may be configured to have a dust collector.

  In the rotary structure 1 of the present embodiment, when the connecting device 4 is disposed laterally from diagonally above to obliquely below the furnace body 2, as shown in FIG. Of the wall 19a and the wall 19b, the wall 19a or 19b disposed above the locking portion 14 is placed on the upper side of the corresponding wall 17a or wall 17b of the locking portion 14 by gravity. FIG. 6 shows a state in which the wall 19 a of the load transfer unit 11 is placed on the upper side of the wall surface 17 a of the locking unit 14.

  Although not shown, in the connecting device 4 located on the opposite side of the furnace body 2, the wall 19b of the load transfer unit 11 is placed above the wall surface 17b of the locking portion 14. .

  Further, in the connecting device 4 located obliquely above or obliquely below the furnace body 2, the wall 19 a or the wall 19 b of the load transfer unit 11 corresponds to the corresponding wall surface 17 a of the locking portion 14, although the arrangement is inclined. Alternatively, it is placed on the upper side of the wall surface 17b.

  In this state, the load due to the weight of the furnace body 2 and the weight of the material inserted inside the furnace body 2 causes the wall 19a, 19b and the wall surfaces 17a, 17b in contact with each other from the load transfer unit 11. It is transmitted to the locking portion 14 via the connecting member 13, and further transmitted to and received by the tire 3 via the connecting member 13 and the bracket 12. Thus, the furnace body 2 is held inside the tire 3 via the respective connecting devices 4.

  Furthermore, when the tire 3 is rotationally driven in this state, the load of the furnace body 2 is transmitted to the tire 3 at one side of the furnace body 2 as described above, and thus the connecting device 4 supporting the furnace body 2 is The position rises, and on the other side of the furnace body 2 the position of the coupling device 4 likewise supporting the furnace body 2 descends. Therefore, the furnace body 2 is rotationally driven along with the movement of the coupling device 4 moving in the circumferential direction by the rotational driving of the tire 3.

  Further, at the time of operation of the rotary stoker type incinerator, the furnace body 2 is thermally expanded by the influence of combustion heat, and the diameter increases, so the furnace body 2 and the furnace body 2 are The dimension of the gap 10 with the tire 3 is reduced. The reduction in the size of the gap 10 is absorbed in each connecting device 4 as the relative insertion amount of the locking portion 14 with respect to the load transfer portion 11 changes. As described above, even if the relative insertion amount of the locking portion 14 with respect to the load transfer portion 11 changes, in the connecting device 4, the walls 19 a and 19 b of the load transfer portion 11 in contact with each other and the locking portion The function of transmitting the load acting from the furnace body 2 to the tire 3 to support it and the function of transmitting the rotation of the tire 3 to the furnace body 2 do not change only by changing the contact area with the wall surfaces 17a and 17b of 14.

  Therefore, according to the rotary structure 1 of the present embodiment, the coupling device 4 is the load transfer portion 11, the bracket 12, and the coupling member constituting the coupling device 4 in the thermal expansion difference generated in the furnace body 2 and the tire 3. 13, it can absorb regardless of any bending deformation of the locking portion 14. Therefore, even if the thermal expansion difference repeatedly occurs in the furnace body 2 and the tire 3, fatigue due to bending deformation occurs in the load transfer portion 11, the bracket 12, the connection member 13, and the locking portion 14 in the connection device 4. Can be suppressed. Therefore, the rotational structure 1 of the present embodiment can improve the durability of the connecting device 4 provided between the furnace body 2 and the tire 3.

  The present invention is not limited to the above embodiment, and the components of the furnace body 2, the tire 3, and the connecting device 4, the components of the furnace body 2, and the components of the connecting device 4 shown in the respective drawings. The shape, size, and dimensional ratio are for convenience of illustration and do not reflect the actual shape, size, and dimensional ratio.

  In the embodiment, the connecting device 4 exemplifies the configuration including the intermediate member 22, the two end members 23 and the position adjusting device 24. However, the connecting device 4 extends in the direction along the chord of the tire 3. Of course, as long as it has a configuration that can be attached to the tire 3 via 12 and the locking portion 14 is attached to the middle portion in the longitudinal direction, it may be a configuration other than that illustrated. For example, a rod-like member or a flat member extending in a direction along the chord of the tire 3 or a member in which a rod-like or flat member is reinforced by ribs may be used.

  The load transfer unit 11 of the connecting device 4 may have a configuration provided with the walls 19a and 19b disposed so as to sandwich the locking portion 14 provided on the tire 3 side from both sides in the circumferential direction of the furnace body. The walls 20a and 20b on the both sides in the axial direction of the furnace body 2 may have a configuration in which one or both of them are omitted.

  If the locking portions 14 of the coupling device 4 can be disposed between the walls 19 a and 19 b inside the load transfer portion 11, both axial ends of the locking portion 14 in the axial direction of the tire 3 are flat. The wall surfaces 18a and 18b need not be the same.

  Furthermore, the load transfer portion 11 and the locking portion 14 are portions where the load transfer portion 11 is disposed above the locking portion 14 when the connecting device 4 is disposed on any side of the furnace body 2 It is sufficient to have a configuration in which a portion of the load transfer unit 11 disposed on the upper side of the locking portion 14 is placed on the locking portion 14. Therefore, the coupling device 4 has, for example, the locking portion 14 as a prism, a cylinder, or an elliptic cylinder along the radial direction of the tire, and the load transfer portion 11 has a square, circular, or oval shape surrounding the periphery of the locking portion 14. It may be a frame.

  Further, the connecting device 4 has the locking portion 14 attached to the outer peripheral surface of the peripheral wall 9 of the furnace body 2, and the load transmitting portion 11 having the walls 19 a and 19 b is provided inside the tire 3 via the connecting member 13 and the bracket 12. It may be configured to be attached to the circumferential surface side. In this case, even when the connecting device 4 is disposed below the furnace body 2 when the furnace body 2 is in a state of thermal expansion, the protruding end portion of the locking portion 14 and the load transfer A gap is held between the connecting member 13 on the back side of the portion 11 and an end portion of the load transmitting portion 11 protruding in the inner circumferential direction contacts the outer peripheral surface of the peripheral wall 9 of the furnace body 2 The arrangement and dimensions of each part and the clearance between each part may be set so that there is no

  The present invention comprises a cylindrical body disposed laterally and an annular body disposed on the outer periphery of the body, for rotating the body and the annular body together between the body and the annular body. If it is a rotating structure of the type provided with a connecting device having the function of connecting and absorbing the thermal expansion difference between the two, for example, a kiln furnace for combustion or firing, a rotary carbonization furnace, a horizontal drum type Of course, the present invention may be applied to rotating structures other than a rotary stoker furnace such as a drying device.

  It goes without saying that various modifications can be made without departing from the scope of the present invention.

Reference Signs List 2 furnace body (body), 3 tires (annular body), 4 connection devices, 7 furnace wall tubes, 8 fins, 9 peripheral walls, 11 load transmitting portions, 13 connecting members, 14 locking portions, 17a, 17b wall surfaces, 19a, 19b wall, 20a, 20b wall

Claims (4)

A cylindrical body disposed laterally,
An annular body disposed with a gap on the outer periphery of the main body;
A coupling device provided between the body and the annular body;
The coupling device is
A connecting member extending in a direction along the chord of the ring and having both ends attached to the ring;
A locking portion disposed at a position corresponding to a longitudinal center of the connecting member and attached to one of the outer peripheral surface of the main body and the connecting member;
And a load transmitting portion attached to one of the outer peripheral surface of the main body and the other of the connecting member, comprising a wall disposed at a position on both sides of the main body in the circumferential direction with respect to the locking portion. A rotating structure characterized by comprising. The locking portion has a configuration provided with flat wall surfaces on both ends in the circumferential direction of the main body,
The rotary structure according to claim 1, wherein the load transfer unit has a configuration in which the wall is disposed to face the wall surface of the locking unit. The rotary structure according to claim 1 or 2, wherein the load transfer unit has a configuration in which both end sides of the wall are connected by a wall along a plane perpendicular to the axial direction of the furnace body. The main body is a furnace body including a peripheral wall formed in a cylindrical shape by furnace wall tubes arranged at intervals set in a circumferential direction, and fins attached between the adjacent furnace wall pipes.
The annular body is a tire disposed on the outer periphery of the furnace body,
The rotary structure according to any one of claims 1 to 3.

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