Inversion device and inversion method

Abstract

To provide a reversing device capable of reversing a reversing object stably and capable of separating the reversing object from the reversing device by moving the reversed reversing object upward, and to provide a reversing method.SOLUTION: A reversing device 5 for reversing upper and lower sides of a reversing object 1 includes: a frame 6 for forming an insertion part 12 into which the reversing object 1 is inserted and for rotating around a rotation center axis line along the horizontal direction; a power part 7 connected so as to transmit torque to the frame 6; and a support material 8 for fixing the reversing object 1 to the frame 6 by connecting an outer peripheral part 4 of the reversing object 1 inserted into the insertion part 12 and a portion 14 opposing to the outer peripheral part 4 of the reversing object 1 on the frame 6. An inner diameter of the insertion part 12 is larger than an outer diameter of the reversing object 1, and the reversing object 1 is inserted into the insertion part 12 from above.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an inversion device and an inversion method for inverting the top and bottom of an inversion object.

Background Art

[0002] For example, in the production line of a steel mill, there is a heat treatment furnace for heat-treating steel plates. In the heat treatment furnace, air inside the heat treatment furnace is heated by burners, and by stirring it, the entire steel plate is heated to a predetermined temperature in design. As an example of a method for stirring the air inside this heat treatment furnace, it has been conventionally known to provide a circulation fan inside the heat treatment furnace. In the heat treatment furnace, circulation fans are attached to both the upper and lower parts of the heat treatment furnace, and the air inside the heat treatment furnace is stirred from both the upper and lower parts of the heat treatment furnace.

[0003] Each of the above-described circulation fans has its components standardized in order to reduce member costs and manufacturing costs. As a result, each circulation fan has substantially the same specifications or substantially the same structure. Also, when inspecting and repairing each circulation fan, the circulation fan attached to the upper part may be inverted and attached to the lower part for use, or conversely, the circulation fan attached to the lower part may be inverted and attached to the upper part for use, and such inversion operations of the circulation fan occur frequently.

[0004] Conventionally, the inversion operation of inverting the top and bottom of the circulation fan has been manually performed while changing the chain block attached to the circulation fan, and since this is a dangerous operation, it has been desired to improve the safety and efficiency of the inversion operation.

[0005] Here, an example of technology related to an inversion device is described in Patent Document 1 and Patent Document 2. Patent Document 1 discloses a container inverter that grips a container with a pair of gripping members and inverts the top and bottom of the container. Also, Patent Document 2 discloses a weight inversion device that places an attachment part such as a flange of a heavy object on a mounting table, fixes the attachment part to the mounting table, and in this state, inverts the heavy object together with the mounting table by a motor or manually. [Prior art documents] [Patent Documents]

[0006] [Patent Document 1] Japanese Patent Publication No. 2019-131304 [Patent Document 2] Japanese Patent Publication No. 9-58825 [Overview of the project] [Problems that the invention aims to solve]

[0007] In the container inversion machine shown in Patent Document 1, the gripping force (hereinafter referred to as gripping force) of the object to be inverted is increased in proportion to the weight of the object to be inverted. However, if the gripping force cannot be sufficiently increased relative to the weight of the object to be inverted, the object may fall during inversion. Furthermore, even if the gripping force can be sufficiently increased relative to the weight of the object to be inverted, there may be insufficient strength of the object to withstand the gripping force.

[0008] In the heavy object inversion device shown in Patent Document 2, as described above, the mounting part of the heavy object is placed on a mounting platform and fixed, and the heavy object is inverted together with the mounting platform in that state. Therefore, when the heavy object is inverted, the mounting platform is positioned above the mounting part of the heavy object. As a result, when attempting to lift the inverted heavy object and separate it from the mounting platform, the mounting part of the heavy object gets caught on the mounting platform. In other words, it is not possible to lift the inverted heavy object above the mounting platform and separate the mounting platform from the heavy object.

[0009] The present invention has been made to solve the above-mentioned problems, and aims to provide an inversion device and inversion method that can stably invert an object to be inverted, and can also move the inverted object upward to separate the object from the inversion device. [Means for solving the problem]

[0010] To achieve the above objectives, the present invention [1] An inversion device for inverting the top and bottom of an object to be inverted, comprising: a frame that forms an insertion portion into which the object to be inverted is inserted and rotates about a rotational axis along the horizontal direction; a power unit connected to the frame so as to be able to transmit torque; and a support member that connects the outer periphery of the object to be inverted inserted into the insertion portion and the portion of the frame facing the outer periphery of the object to be inverted to fix the object to the frame, wherein the inner diameter of the insertion portion is larger than the outer diameter of the object to be inverted, and the object to be inverted is inserted into the insertion portion from above. [2] The inversion device according to [1], wherein a flange is provided on the outer circumference of the object to be inverted, a mounting flange is provided on the frame that protrudes inward in the radial direction of the insertion portion, one end of the support member is connected to the lower side of the flange, and the other end of the support member is connected to the lower side of the mounting flange. [3] The inversion device according to [1], wherein the support material is formed in the shape of a plate. [4] The reversing device according to any one of [1] to [3], wherein the power unit has a reduction gear that increases the torque. [5] The reversing device described in [4], wherein the reduction gear is a worm gear reduction gear. [6] A method for inverting an object to be inverted, comprising: a placement step of inserting the object to be inverted from above into an insertion portion formed by a frame, and placing the outer periphery of the object to be inverted on one end of a support member, the other end of which is connected to the frame; a fixing step of connecting one end of the support member to the outer periphery of the object to be inverted and fixing the object to be inverted to the frame via the support member; an inversion step of inverting the object to be inverted by rotating the frame about a rotational axis along the horizontal direction; and a moving step of releasing the connection between the other end of the support member and the frame, thereby releasing the fixing of the object to be inverted to the frame via the support member, and moving the object to be inverted above the frame. [Effects of the Invention]

[0011] According to the present invention, the object to be inverted can be stably inverted vertically, and the inverted object can be moved upward to separate it from the inversion device. [Brief explanation of the drawing]

[0012] [Figure 1] This figure shows an example of a circulation fan in this embodiment. [Figure 2] This figure shows an example of a reversing device according to this embodiment. [Figure 3] This is a view from arrow A in Figure 2. [Figure 4] This is a view from arrow B in Figure 2. [Figure 5] This is a view from arrow C in Figure 2. [Figure 6] This is a magnified view of a part of the inversion device shown in Figure 2. [Figure 7] This flowchart shows an example of the inversion method according to this embodiment. [Figure 8] This figure shows the circulating fan shown in Figure 2 in a reversed state. [Modes for carrying out the invention]

[0013] The following describes an example of an embodiment of the present invention (hereinafter referred to as "this embodiment"). The inversion device of this embodiment inverts the top and bottom of an object to be inverted, and in particular inverts the top and bottom of a flanged object to be inverted. A flanged object to be inverted refers to an object to be inverted that has a flange or flange-like projection on its outer circumference. Specifically, an example of a flanged object to be inverted is a circulation fan installed in a heat treatment furnace.

[0014] The heat treatment furnaces mentioned above, although not shown in detail in the illustrations, include conventionally known heat treatment furnaces installed on the production lines of steel mills to heat-treat steel plates. In a heat treatment furnace, the air inside the furnace is heated by a burner, and the air heated by the burner is stirred by a circulation fan to raise the temperature of the entire steel plate to the temperature specified in the design.

[0015] Circulation fans having substantially the same specifications or substantially the same configuration are installed in a state facing each other at the upper part and the lower part of the heat treatment furnace, respectively. Here, the state of facing each other means that the circulation fan at the upper part of the heat treatment furnace and the circulation fan at the lower part of the heat treatment furnace overlap each other in the vertical direction, and the air flows sent out from each circulation fan face each other with a steel plate interposed therebetween. Thus, the circulation fan at the upper part of the heat treatment furnace and the circulation fan at the lower part of the heat treatment furnace are installed in the heat treatment furnace in a state where they are inverted up and down with respect to each other. Therefore, when inspecting and repairing each circulation fan, it may be necessary to invert the up and down of the circulation fan removed from the upper part of the heat treatment furnace and attach it to the lower part, or invert the up and down of the circulation fan removed from the lower part of the heat treatment furnace and attach it to the upper part.

[0016] FIG. 1 is a diagram showing an example of the circulation fan 1 in the present embodiment. The circulation fan 1 shown in FIG. 1 is connected to an actuator 2 such as a motor so as to be torque-transmittable, and the blades 3 rotate by receiving the torque transmitted from the actuator 2. Further, a flange 4 used when fixing the circulation fan 1 to the heat treatment furnace is formed on the outer peripheral portion of the circulation fan 1 on the side opposite to the blades 3 in the height direction of the circulation fan 1. The flange 4 may be provided continuously over the entire circumference of the outer peripheral portion of the circulation fan 1 or at regular intervals in the circumferential direction of the outer peripheral portion of the circulation fan 1. The fixing of the circulation fan 1 to the heat treatment furnace described above may be by screwing or bolting. Therefore, screw holes and bolt holes (not shown) are formed in the flange 4, and the heat treatment furnace is screwed or bolted using these screw holes and bolt holes.

[0017] In the following description, the posture of the circulation fan 1 in which the blades 3 are located above the flange 4 is referred to as upward, and the posture of the circulation fan 1 in which the blades 3 are located below the flange 4 is referred to as downward. The circulation fan 1 is installed at the upper part of the heat treatment furnace in the downward state and at the lower part of the heat treatment furnace in the upward state.

[0018] Furthermore, multiple locking parts (not shown) are provided on both the flange 4 side end and the blade 3 side end of the circulation fan 1, respectively, for attaching a crane hook when lifting the circulation fan 1 with a crane.

[0019] Figure 2 shows an example of the inversion device 5 according to this embodiment. Figure 3 is a view from arrow A in Figure 2, Figure 4 is a view from arrow B in Figure 2, and Figure 5 is a view from arrow C in Figure 2. The inversion device 5 shown in Figures 2 to 5 has a frame 6, a power unit 7, and a support member 8. The frame 6 is a box-shaped member made up of multiple square timbers and is configured to rotate about a rotational central axis that is aligned horizontally in response to torque transmitted from the power unit 7. Specifically, as shown in Figures 2 and 3, a rotating shaft 9 that rotates about the rotational central axis is provided on both sides of the frame 6. Each rotating shaft 9 is installed on a base 11 via a bearing 10. The power unit 7 is connected to one of the rotating shafts 9 so as to be able to transmit torque. In Figures 2 to 5, a circulation fan 1 fixed to the frame 6 in a downward position is shown by a dotted line.

[0020] The power unit 7 includes a power source 16 and a reduction gear that increases the torque generated by the power source 16 and transmits it to the rotating shaft 9. The reduction gear is preferably a worm gear reduction gear 17 having a self-locking function. This is to prevent the rotating shaft 9 from rotating independently of the torque generated by the power source 16. The power source 16 is connected to the rotating shaft 9 via the worm gear reduction gear 17. Examples of the power source 16 include a motor, an electric tool such as an impact wrench, a hand tool such as a spanner, etc. Figures 2, 4, and 5 show the state in which the circulation fan 1 is inserted into the insertion part 12 in a downward position and fixed, and the rotation of the frame 6 is stopped by the self-locking function.

[0021] In the examples shown in Figures 2 to 5, the frame 6 forms an insertion section 12 into which the circulation fan 1 is inserted. The insertion section 12 is designed to allow the circulation fan 1 to be inserted along an axis perpendicular to the rotational axis of the frame 6 (the vertical direction in Figure 2). In other words, the frame 6 is formed in a cylindrical shape, and the inside of it is the insertion section 12. The inner diameter of the insertion section 12 is set to be larger than the outer diameter of the circulation fan 1. Here, "inner diameter of the insertion section 12" means the inner diameter of the insertion section 12 if the insertion section 12 is cylindrical, and the inner diameter of the inscribed circle that is inscribed in the insertion section 12 if the insertion section 12 is not cylindrical. Also, "outer diameter of the circulation fan 1" means the outer diameter of the part of the circulation fan 1 with the largest diameter, and in this embodiment, it means the outer diameter of the flange 4 of the circulation fan 1.

[0022] Figure 6 is an enlarged view of a part of the reversing device 5 shown in Figure 2. As shown in Figures 6, 2, and 3, a mounting flange 14 for the support member 8 is provided on the peripheral edge 13 of one end (upper end in Figure 2) of the frame 6 that forms the insertion portion 12, in the vertical direction of the insertion portion 12, that is, in the axial direction perpendicular to the rotational center axis of the frame 6. The mounting flange 14 is provided so as to protrude inward in the radial direction of the insertion portion 12. Here, the "radial direction" mentioned above means the radial direction of the insertion portion 12 if the insertion portion 12 is cylindrical, and the radial direction of the inscribed circle that is inscribed in the insertion portion 12 if the insertion portion 12 is not cylindrical. The mounting flanges 14 are provided at regular intervals along the circumferential direction of the peripheral edge 13 of the frame 6, and in this example, a total of four mounting flanges 14 are provided on the peripheral edge 13 of the frame 6 at 90° intervals. The diameter of the inscribed circle (not shown) that is inscribed within the mounting flanges 14 is set to be larger than the outer diameter of the circulation fan 1. Note that the mounting flanges 14 are not installed on the peripheral edge 15 of the frame 6 on the other end (the lower end in Figure 2) in the vertical direction of the insertion portion 12. Therefore, the inner diameter of the peripheral edge 13 on one end in the vertical direction of the insertion portion 12 is smaller than the inner diameter of the peripheral edge 15 on the other end in the vertical direction of the insertion portion 12 by the amount of the mounting flanges 14. Furthermore, the mounting flanges 14 described above correspond to the "portion of the frame facing the outer circumference of the object to be inverted" in this embodiment.

[0023] Furthermore, it is preferable that the shape of the frame 6 and the position of the insertion portion 12 on the frame 6 are set so that the center of gravity of the frame 6 and the center of gravity of the circulation fan 1 fixed to the frame 6 are located on the rotational axis of the frame 6. This can be determined during the design process. By doing so, it is possible to suppress the rotation of the frame 6 caused by the deviation of the positions of each center of gravity relative to the rotational axis of the frame 6. In addition, since each center of gravity is located on the rotational axis, the frame 6 can be rotated smoothly.

[0024] Preferably, the length of the insertion portion 12 in the vertical direction, that is, in the axial direction perpendicular to the rotational axis of the frame 6, is set to be approximately the same as the length between the blades 3 and the flange 4 in the height direction of the circulation fan 1. By doing so, when the circulation fan 1 is inserted into the insertion portion 12, the flange 4 of the circulation fan 1 and the mounting flange 14 of the insertion portion 12 can be placed adjacent to each other, and the flange 4 and the mounting flange 14 can be connected to each other via the support member 8.

[0025] Furthermore, in the examples shown in Figures 2 and 6, the other end (outer end) of the support member 8 is detachably fixed to the lower side of the mounting flange 14 in the vertical direction of the inversion device 5. The connection between the mounting flange 14 and the support member 8, that is, the fixing of the support member 8 to the frame 6, may be done by screwing or bolting. For this reason, screw holes and bolt holes (not shown) are formed in the mounting flange 14. Then, as will be described later, the other end of the support member 8 is screwed or bolted to the lower side of the mounting flange 14 using these screw holes and bolt holes. When the other end (outer end) of the support member 8 is fixed to the mounting flange 14, the other end (outer end) of the support member 8 is located inward in the radial direction of the insertion portion 12 from the peripheral edge of the frame 6, and one end (inner end) of the support member 8 is located inward in the radial direction of the insertion portion 12 from the other end (outer end). Furthermore, when fixed to the mounting flange 14, the diameter of the inscribed circle (not shown) that is inscribed within the support material 8 is set to be smaller than the outer diameter of the circulation fan 1.

[0026] Furthermore, in the examples shown in Figures 2 and 6, the flange 4 of the circulation fan 1 is placed on the upper side of one end (inner end) of the support member 8, and they are fastened together with screws or bolts. In other words, one end of the support member 8 is detachably fixed to the lower side of the flange 4 of the circulation fan 1.

[0027] The support member 8 is a plate-shaped member, and screw holes or bolt holes are formed at both ends of the support member 8. The flange 4 of the circulation fan 1 and the mounting flange 14 of the frame 6 also have screw holes or bolt holes that are almost the same as those formed at both ends of the support member 8. The screw holes or bolt holes formed at one end of the support member 8 are almost aligned with the screw holes or bolt holes formed at the flange 4 of the circulation fan 1, and bolts are inserted into these screw holes or bolt holes to connect them detachably. Similarly, the screw holes or bolt holes formed at the other end of the support member 8 are almost aligned with the screw holes or bolt holes formed at the mounting flange 14, and bolts are inserted into these screw holes or bolt holes to connect them detachably.

[0028] In this embodiment, the other end of the support member 8 is screwed or bolted to the lower side of the mounting flange 14 in the vertical direction (height direction) of the inversion device 5 shown in Figure 2. Note that the number of mounting flanges 14 and support members 8 is not limited to four; there may be two, three, or five or more. It is preferable to have a larger number of mounting flanges 14 and support members 8 so that the circulation fan 1 can be supported more stably. Alternatively, the mounting flanges 14 and support members 8 may each be formed in an annular shape and attached along the periphery of the frame 6. In this way as well, the circulation fan 1 can be fixed to the frame 6 via the mounting flanges 14 and support members 8.

[0029] (How to reverse) A method for reversing a downward-facing circulation fan 1 to an upward-facing position will be described. Figure 7 is a flowchart showing an example of the reversal method according to this embodiment. First, as shown in Figure 2, the reversal device 5 is fixed in a state where the mounting flange 14 is located on the upper side of the reversal device 5 in the vertical direction. The reversal device 5 is fixed by the self-locking function of the worm gear reducer 17, as described above. In that state, the other end of the support member 8 is connected to the lower side of the mounting flange 14 by a bolt (hereinafter referred to as an outer bolt).

[0030] In conjunction with this, a crane hook (not shown) is attached to the locking part of the flange 4 end of the circulation fan 1, and the circulation fan 1 is lifted up. The circulation fan 1 is then moved to the frame 6 by the crane, and the circulation fan 1 is inserted into the insertion section 12 from above in a downward position. As described above, the diameter of the inscribed circle (not shown) that is inscribed in the support member 8 is smaller than the outer diameter of the circulation fan 1, so when the circulation fan 1 is inserted into the insertion section 12, the flange 4 of the circulation fan 1 inserted into the insertion section 12 is placed on one end of the support member 8 (step S1, placement step).

[0031] Subsequently, one end of the support member 8 and the flange 4 of the circulation fan 1 are connected to each other with a bolt (hereinafter referred to as an internal bolt). In this way, the circulation fan 1 is fixed to the frame 6 via the support member 8 (step S2, fixing process). Figure 2 shows this state.

[0032] Next, the crane hook that was attached to the locking part of the circulation fan 1 is removed. Then, the power unit 7 is activated to rotate the frame 6 around the rotation center axis. In this way, the up and down orientation of the circulation fan 1 is reversed (step S3, reversal process). The determination that the up and down orientation of the circulation fan 1 has been reversed may be made by a control device (not shown) or by an operator. Almost simultaneously with the completion of the reversal of the circulation fan 1, the rotation of the frame 6 by the power unit 7 is stopped. In this state, the circulation fan 1 is facing upwards, and the rotation shaft 9 is locked by the self-locking function of the worm gear reducer 17.

[0033] As described above, by reversing the orientation, the blades 3 of the circulation fan 1 are positioned above the flange 4. Figure 8 shows this state. The crane hook is attached to the locking part at the end of the blade 3 side of the circulation fan 1 shown in Figure 8. Accordingly, the outer bolts that connected the other end of the support member 8 and the mounting flange 14 are removed. In this state, the circulation fan 1 is lifted by the crane and pulled upward from the insertion part 12, and the circulation fan 1 is moved to a predetermined location (step S4, moving process). That is, the circulation fan 1 is pulled out from the other end of the frame 6, opposite to the one end of the frame 6 into which the circulation fan 1 was inserted in step S1 described above. As described above, since the other end (outer end) of the support member 8 is located inward in the radial direction of the insertion part 12 compared to the peripheral edge of the frame 6, the circulation fan 1 can be pulled upward from the frame 6 even while the support member 8 remains fixed to the circulation fan 1. Next, the inner bolt connecting the flange 4 of the circulation fan 1 and one end of the support member 8 is removed, and the support member 8 is removed from the circulation fan 1.

[0034] As described above, according to this embodiment, when the reversing device 5 is used to reverse the circulation fan 1, the frame 6 and the circulation fan 1 are fixed via the support member 8 and the mounting flange 14. Therefore, after the circulation fan 1 is reversed, by removing the support member 8 from the mounting flange 14, the circulation fan 1 can be lifted from the frame 6 and pulled upward without getting caught on the frame 6. Therefore, the circulation fan 1 can be lifted stably and safely by a crane, both before and after the reversing of the circulation fan 1. In addition, the self-locking mechanism of the worm gear reducer 17 can suppress unexpected rotation of the rotating shaft 9. Furthermore, since the power source 16 of the power unit 7 and the rotating shaft 9 are connected via the worm gear reducer 17 in a torque-transmitting manner, the torque of the power source 16 can be increased and transmitted to the rotating shaft 9. Therefore, the frame 6 can be rotated with a smaller torque than before, and for example, the frame 6 can be rotated manually.

[0035] In the inversion device 5 and inversion method according to the embodiment described above, an example of inverting a downward-facing circulation fan 1 to an upward-facing position was explained, but it is also possible to invert an upward-facing circulation fan 1 to a downward-facing position. In that case, first, as shown in Figure 8, the inversion device 5 is fixed with the mounting flange 14 positioned on the lower side of the inversion device 5 in the vertical direction. The inversion device 5 is fixed by the self-locking function of the worm gear reducer 17.

[0036] Furthermore, one end of the support member 8 is placed on the flange 4 of the upward-facing circulation fan 1, and they are connected by an internal bolt. Then, the upward-facing circulation fan 1 is lifted by a crane and inserted into the insertion part 12 of the frame 6 from above. The other end of the support member 8 is then placed on the mounting flange 14, and they are connected by an external bolt. After that, the frame 6 is rotated in the same manner as in the embodiment described above to reverse the orientation of the circulation fan 1. As a result, the circulation fan 1 faces downward, as shown in Figure 2.

[0037] Then, after the circulation fan 1 is reversed, the inner bolts connecting the circulation fan 1 and the support member 8 are removed to release the fixed state of the circulation fan 1. Next, the circulation fan 1 is lifted by a crane and pulled upward from the insertion part 12, with the downward-facing circulation fan 1 being pulled upward. In this way, the upward-facing circulation fan 1 can be reversed to face downward.

[0038] It should be noted that the present invention is not limited to the embodiments described above. For example, a flange 4 may be formed in the central part of the circulation fan 1 or near thereto in the height direction of the circulation fan 1, or on the blade 3 side in the height direction of the circulation fan 1. In that case, a mounting flange 14 should be provided on the frame 6 at a position facing the flange 4 of the circulation fan 1 inserted into the insertion part 12. Even with such a configuration, substantially the same operation and effects as those of the embodiment described above can be obtained.

[0039] Furthermore, the present invention can also be applied to the inversion of objects without flanges. In this case, by attaching the support material 8 to the outermost circumference of the object to be inverted, the object can be inverted in substantially the same manner as in the embodiment described above. [Explanation of symbols]

[0040] 1. Circulating fan (an example of an object to be turned over) 2 Actuators 3 feathers 4 flanges 5. Inverting device 6. Stand 7 Power section 8 Support material 9 Rotation axis 10 bearings 11 Pedestal 12 Insertion part 13 Peripheral edge of one end of the support structure 14 Mounting flange 15 Peripheral edge of the other end of the support structure 16 Power source 17 Worm gear reducer S1 Placement process S2 Fixed process S3 Inversion Process S4 Moving process

Claims

1. An inversion device that inverts the top and bottom of an object to be inverted, A frame that forms an insertion portion into which the object to be inverted is inserted, and rotates about a rotational axis along the horizontal direction, A power unit connected to the aforementioned frame in a manner that can transmit torque, The system includes a support member that connects the outer periphery of the object to be inverted, which is inserted into the insertion portion, with the portion of the frame facing the outer periphery of the object to be inverted, thereby fixing the object to be inverted to the frame. The inner diameter of the insertion portion is larger than the outer diameter of the object to be inverted. The object to be inverted is inserted into the insertion section from above. A flange is provided on the outer circumference of the object to be inverted. A mounting flange is provided on the part of the frame facing the outer circumference of the object to be inverted, projecting inward in the radial direction of the insertion portion. An inversion device in which one end of the support member is connected to the lower side of the flange, and the other end of the support member is connected to the lower side of the mounting flange.

2. The inversion device according to claim 1, wherein the support material is formed in the shape of a plate.

3. The reversing device according to claim 1 or 2, wherein the power unit has a reduction gear that increases the torque.

4. The reversing device according to claim 3, wherein the reduction gear is a worm gear reduction gear.

5. A method for inverting an object to be inverted using the inversion device described in Claim 1, The process involves inserting the object to be inverted from above into the insertion portion formed by the frame, and placing the outer periphery of the object to be inverted on one end of a support member, the other end of which is connected to the frame; A fixing step of connecting one end of the support material to the outer periphery of the object to be inverted and fixing the object to be inverted to the frame via the support material, A reversal step in which the upside down of the object to be reversed is reversed by rotating the frame about a rotational axis that lies along the horizontal direction, An inversion method comprising: a moving step of, with the inversion object inverted vertically, releasing the connection between the other end of the support member and the frame, thereby releasing the inversion object from its fixation to the frame via the support member, and moving the inversion object above the frame.

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