JP4476605B2 - Drum can canopy ring and drum - Google Patents

Description

  The present invention relates to a drum can lid fastening ring for fixing a canopy to the body of an open drum can, and a drum can attached with the drum can canopy fastening ring.

As a means for fixing the canopy and the fuselage after the canopy is attached to the fuselage of the open drum can with which the canopy can be attached to and removed from the fuselage, U Alternatively, there are two types, a type in which a fastening ring having a V-shape is attached and the fastening ring is fastened with a lever, and a type in which the fastening ring is fastened with a bolt (for example, see Patent Document 1).
JP-A-11-255256

  The above-mentioned lever type fastening ring has a lever mechanism that connects both ends of the fastening ring. The lever mechanism is used to fasten and tighten the fastening ring by a certain size. It can be carried out. However, in the case of a lever-type fastener ring, the fastener ring can only be tightened to a certain size as described above. If the above dimensions are increased and the amount of tightening is increased, the force required for tightening increases, and it is difficult to tighten manually. Has the disadvantage of becoming impossible. Therefore, a large tightening amount cannot be obtained, and the drum can not be sufficiently sealed, so that it cannot be said that the structure is suitable for obtaining stable airtightness. In addition, for example, it is difficult to cope with a situation where the fastening ring is automatically tightened by remote control by a machine in a place where the operator cannot directly perform the fastening work, such as a radiation control area in a nuclear facility. is there.

  Further, as shown in FIG. 15, the bolt type fastening ring has bolts 4 and nuts 5 for fastening both end portions 2 and 3 of the fastening ring 1 and tightens the nuts in consideration of workability. 5 is fixed to the one end 2 of the fastening ring 1 by welding or screwed in advance. In such a bolt type fastening ring, as shown in FIG. 16, when the fastening ring 1 is attached to a drum can provided with a canopy, the fastening ring 1 is shown by a solid line as compared to the fastening shown by a virtual line. Has spread. Therefore, the central axis 5a of the nut 5 fixed to the one end 2 and the central axis 4a of the bolt 4 provided at the other end 3 of the fastening ring 1 are not parallel, and the bolt 4 is screwed into the nut 5. It is difficult, and the tightening operation of the tightening ring 1 becomes difficult. Further, when fixing the nut 5 to the one end 2, it is necessary to perform the fixing work while paying attention so as to coincide with the central shaft 4 a of the bolt 4 in consideration of the fastening state with the bolt 4. Deteriorate. On the other hand, when the nut 5 is not fixed to the one end portion 2, the screwing operation is relatively easy, but the operator must hold the bolt 4 and the nut 5 and the workability is deteriorated.

As described above, even if the tightening operation of the tightening ring 1 is difficult, if the tightening operation of the tightening ring 1 by the operator is possible, the operator appropriately moves the tightening ring 1 and the bolt 4 to move the bolt 4 And the nut 5 can be easily screwed together. However, when the tightening operation by the operator cannot be performed as in the radiation management area described above, the fastening ring 1 is automatically tightened by the machine, so that it is very difficult to perform the screwing. Become. In addition, when the nut 5 is not attached to the one end portion 2, it is necessary to handle the nut 5 by the machine, so that the work process of the machine increases and the screwing operation becomes more difficult.
The present invention has been made to solve such problems, and an object of the present invention is to provide a drum can lid fastening ring that facilitates a fastening operation by remote control, and a drum can attached with the drum can canopy fastening ring. To do.

In order to achieve the above object, the present invention is configured as follows.
That is, the drum can lid fastening ring according to the first aspect of the present invention is a drum can canopy fastening ring for fastening the canopy of the open drum with the canopy detachable to the can body and the can body by remote control. And
A band member having a discontinuous circular shape in which a peripheral portion of the canopy and a peripheral portion of the can body are fastened to each other, and a fastening bolt is inserted into one end of the band member. A band having a first holding member capable of holding the head of the fastening bolt and having a second holding member into which the tip of the fastening bolt can be inserted at the other end of the band member. Members,
A multiplexer engagement member fitted with respect to the second holding member, mounting member for preventing rotation of the engaging member in the axial direction around the fastening bolt, and is secured to該装wear member have a nut that engages with the tip has passed through the second holding member, the engaging member for loosely fitting the second holding member via a gap with respect to the mounting member and the nut And.

Further, the mounting member is formed in a U-shape and is two members provided opposite to each other, and the direction around the axis of the fastening bolt when the fastening bolt and the nut are screwed together A first member that prevents rotation of the engaging member to the second member, and a second member that connects the two first members and has a through hole that penetrates the tip of the fastening bolt. The nut is opposed to the second member and fixed by connecting the two first members, and the engaging member is surrounded by the first member, the second member, and the nut. The first holding member, the second member, and the inner surface of the nut may be configured to have a fitting space for gently fitting the second holding member through the gap .

Further, when the fastening bolt that has passed through the first holding member and the second holding member is screwed into the nut in the engaging member fitted to the second holding member, the fastening bolt And a mounting state setting member positioned between the first holding member and the engaging member, wherein the canopy is attached to the peripheral portion of the canopy. said when open the drum is mounted on the can body of the can, the contact with the band member were spread tightened state the first holding member and the second holding the widened mounting intervals than the first holding member It can also comprise so that the member for mounting | wearing state setting which arranges the member for operation may be further provided.

  Further, the mounting state setting member further includes the canopy attached to the can body and the drum canopy ring tightened by the fastening operation of the fastening bolt and the nut to fasten the first holding member and the second holding member. When the working member is arranged at a fastening interval, the first holding member is contacted to maintain the fastening interval, and the drum canopy fastening ring is prevented from loosening by engaging with the nut. You can also

  Further, the drum canopy ring is a member that prevents the drum canopy ring from being detached from the canopy in a state where the drum canopy ring is provided at the peripheral edge of the canopy, and projects from the band member so as to face the outer surface of the canopy. It can also be configured to further provide and prevent a detachment preventing member provided.

  Furthermore, the drum can according to the second aspect of the present invention includes the drum can lid fastening ring according to the first aspect.

  According to the drum can lid fastening ring in the first aspect of the present invention and the drum can in the second aspect, the band member and the engaging member are provided, and the engaging member is provided with respect to the second holding member provided in the band member. Since the fitting is gently performed, the direction of the central axis of the nut of the engaging member can be matched with the direction of the central axis of the fastening bolt. Further, the direction of the central axis of the nut and the direction of the central axis of the fastening bolt change depending on the tightening state of the drum can lid fastening ring, but the change can be dealt with. Therefore, in the tightening operation of the nut and the fastening bolt, for example, it is possible to prevent a problem that the tightening operation becomes difficult, and it is possible to automatically perform the tightening operation by remote operation with a machine. . Further, as described above, since the engaging member can be attached by being loosely fitted to the second holding member, the attaching operation of the engaging member to the band member can be easily performed. Can do.

  Further, since the second holding member is fitted into the fitting space formed by the engaging member, the fastening bolt and the nut are screwed together and the fastening bolt is rotated to be fastened. When the operation is performed, the engagement member can be prevented from rotating in the direction around the axis of the fastening bolt along with the rotation of the fastening bolt. Therefore, it can be said that the configuration in which the second holding member is fitted in the fitting space formed by the engaging member is an effective structure for automatically performing the tightening operation by remote operation with a machine.

  Moreover, the band member can be held at the mounting interval by providing the mounting state setting member. Therefore, when the canopy with the drum canopy ring is attached to the open drum can by remote control, the drum canopy ring is narrowed to about the same as the diameter of the canopy and interferes with the peripheral edge of the can body of the drum can. It is possible to prevent the mounting from becoming difficult.

  Further, by providing a member for preventing detachment, it is possible to prevent the drum canopy fastening ring from falling off the canopy when the canopy to which the drum canopy fastening ring is attached is lifted. In particular, even when the band member is held at the mounting interval as described above, it is possible to prevent the drum canopy clasp from falling off the canopy, and the canopy attached with the drum canopy clasp can be remotely It can be attached to the body of an open drum can by operation.

A drum can lid fastening ring and a drum can provided with the drum can top fastening ring according to an embodiment of the present invention will be described below with reference to the drawings. In addition, the same code | symbol is attached | subjected about the same component in each figure.
As shown in FIGS. 1, 2, and 7, the drum canopy claw ring 100 is configured such that the canopy 182 and the can body 181 of the open drum 180 can be attached to and detached from the can body 181 by remote control. It is a drum canopy ring for doing this. Such a drum can lid fastening ring 100 includes a band member 110 and an engaging member 120 as a basic configuration, and further includes an attachment state setting member 140 and a detachment preventing member 111 on the band member 110. it can.

As shown in FIG. 7, the band member 110 has a substantially V-shaped cross section for fastening the peripheral portion 1822 of the canopy 182 and the peripheral portion 1811 of the can body 181, and is provided at one place around the band member 110. It has a discontinuous circular shape provided with a notch 112. A first holding member 114 is attached to one end portion 113 of the band member 110 and a second holding member 116 is attached and fixed to the other end portion 115 so as to face each other. As shown in FIG. 6, the first holding member 114 and the second holding member 116 are formed of a band material, and one end of the band material is attached to the outer periphery 110a of the band member 110, and the other end is Each of the bolt holding portions 117 is formed in a cylindrical shape through which the same fastening bolt 130 can be communicated and inserted. In the first holding member 114, the fastening bolt 130 is inserted into the bolt holding portion 117, and the head 131 of the fastening bolt 130 is held. In the second holding member 116, the tip end portion 132 of the fastening bolt 130 is inserted into the bolt holding portion 117 and holds the tip end portion 132. As shown in FIG. 3, the fastening bolt 130 is provided with a washer 141 and an opening nut 142 as the mounting state setting member 140, and then the following engagement member 120 is attached. The inner diameter of the bolt insertion hole 117 a in the bolt holding portion 117 of the first holding member 114 and the second holding member 116 is, for example, about 3 mm larger than the outer diameter of the fastening bolt 130.
Further, in order to rotate the fastening bolt 130, a bolt rotating device 222 provided in a canopy mounting device 220, which will be described later, can be attached to and detached from the head 131. In order to facilitate, the head 131 of the fastening bolt 130 is formed with a mounting introduction portion 131a having a conical shape.

  As will be described in detail later, the canopy 182 is sucked and transported with the drum canopy ring 100 attached, and the drum canopy ring 100 is detached from the canopy 182 during the transport. It is necessary to prevent it. Therefore, the band member 110 is provided with a plurality of detachment preventing members 111 as shown in FIG. As shown in FIG. 7, the detachment preventing member 111 faces the outer surface 1821 of the canopy 182 and protrudes from the band member 110 toward the center side of the band member 110. The bolt holding portion 117 formed on the first holding member 114 and the second holding member 116 is disposed on the can body 181 side on the side opposite to the detachment preventing member 111.

The engagement member 120 forms a fitting space 121 as shown in FIG. 4, and as shown in FIGS. 5 and 8, the second holding member 116 can be loosely fitted into the fitting space 121. A mounting member 123 having a through-hole 122 through which the tip 132 of the fastening bolt 130 passes, and the tip 132 fixed to the mounting member 123 and passing through the through-hole 122 and the second holding member 116. And a fastening nut 124 to be engaged. The through hole 122 is a hole having a sufficiently large inner diameter with respect to the outer diameter of the fastening bolt 130.
The mounting member 123 is formed by forming a band material into a U shape. That is, it has the two 1st members 1231 arrange | positioned facing each other, and the 2nd member 1232 which connected these two 1st members 1231 and formed the said through-hole 122. As shown in FIG. In the embodiment, the first member 1231 and the second member 1232 are integrally formed of the band material as described above. The tightening nut 124 is fixed so as to face the second member 1232 and connect the two first members 1231 together.
With such a configuration, the engaging member has the fitting space 121 surrounded by the first member 1231, the second member 1232, and the tightening nut 124. As described above, the second holding member 116 can be loosely fitted into the fitting space 121, and the second holding member 116 can be attached to and detached from the engaging member 120.

  Since the engagement member 120 is not dropped from the second holding member 116 by inserting the fastening bolt 130 into the through hole 122 and the second holding member 116, the through hole The second member 1232 having 122 is valuable. However, if the fastening bolt 130 is screwed into the fastening nut 124, the above-described dropout of the engaging member 120 is eliminated. Therefore, the second member 1232 can be omitted from the mounting member 123.

Further, as described above, the fastening bolt 130 is screwed into the fastening nut 124, and the fastening operation of the first holding member 114 and the second holding member 116 is performed by the rotation of the fastening bolt 130. However, by adopting a configuration in which the second holding member 116 is fitted into the fitting space 121, even if the engaging member 120 starts to rotate with the rotation of the fastening bolt 130, The first member 1231 contacts the band member 110. Therefore, the fitting structure can prevent the tightening nut 124 from rotating with the rotation of the fastening bolt 130 in the direction around the axis during the fastening operation.
The engaging member 120 is not limited to the structure shown in FIG. 4, and may be any structure having the mounting member 123 and the tightening nut 124.

The tightening operation of the drum can lid fastening ring 100 having the band member 110 and the engaging member 120 configured as described above will be described below with reference to FIGS. 9 to 14. Here, the drum canopy claw ring 100 according to the present embodiment has the canopy 182 attached to the can body 181 of the open drum can 180 in an environment where humans cannot perform the tightening operation as in a nuclear facility, for example. It is used for fastening 182 and can body 181.
A drum canopy ring 100 is attached to the canopy 182. In this embodiment, the attachment work is performed in an environment where the work can be performed by the worker, and is thus performed by the worker. In the attaching operation, as shown in FIG. 5, the second holding member 116 is fitted into the fitting space 121 of the engaging member 120. At this time, as shown in FIGS. 5, 9, and 10, the tightening nut 124 is positioned on the side opposite to the first holding member 114. The reason is that when the tightening nut 124 is positioned on the first holding member 114 side, the second member 1232 pulls the second holding member 116 toward the first holding member 114 side by the fastening operation. This is because the second member 1232 is thin and weak in strength as compared with the tightening nut 124, which causes a problem in strength.

Further, the fitting space 121 and the second holding member 116 are gently fitted. Specifically, the inner surfaces of the first member 1231, the second member 1232, and the tightening nut 124 forming the fitting space 121 and the second holding member 116 are fitted with a gap 125 of about 1 mm. Is done. By such loose fitting, the engaging member 120 can move relatively freely with respect to the second holding member 116.
As shown in FIG. 5, after the fastening bolt 130 is passed through the first holding member 114, the mounting state setting member 140 is engaged, and the tip 132 of the fastening bolt 130 is engaged with the engaging member. The through hole 122 of 120 and the second holding member 116 are passed through and screwed into the tightening nut 124. As described above, the fastening nut 124 of the engaging member 120 and the fastening bolt 130 are screwed together, and the diameter of the band member 110 is changed by the fastening operation by the rotation of the fastening bolt 130. Although the direction of the central axis of the fastening bolt 130 changes according to the change in the diameter, the direction of the central axis of the tightening nut 124 is changed to the direction of the central axis of the fastening bolt 130 by the loose fitting. Can be matched. Therefore, it is possible to prevent a conventional problem from occurring in the tightening operation of the tightening nut 124 and the tightening bolt 130, and it is possible to automatically perform the tightening operation by remote operation with a machine.

  As described above, after the fastening bolt 130 is passed through the first holding member 114, the mounting state setting member 140 is engaged, and the tip 132 of the fastening bolt 130 is connected to the engagement member 120. The through hole 122 and the second holding member 116 are penetrated and screwed into the tightening nut 124. In this way, with respect to the drum can lid fastening ring 100 with the fastening bolts 130 and the engaging members 120 attached to the band member 110, the operator makes the separation preventing member 111 and the outer surface 1821 of the canopy 182 face each other. And attached to the canopy 182. Moreover, as will be described later, the canopy 182 to which the drum can canopy ring 100 is attached is automatically mounted on the can body 181 by a machine. Therefore, when the drum canopy cinch ring 100 attached to the canopy 182 is in a state of being narrowed to almost the diameter of the canopy 182 by the restoring force of the band member 110 at the time of the mounting, the drum canopy cinch ring 100 is in the peripheral portion 1811 of the can body 181. There is a possibility that a trouble occurs in the mounting operation by interfering with. Therefore, in order to avoid such problems, it is preferable to perform the following operations.

That is, the fastening bolt 130 is screwed into the fastening nut 124 of the engaging member 120, and the mounting state setting member 140 is provided. Therefore, as shown in FIG. 9, the opening nut 142 of the mounting state setting member 140 is brought into contact with the first holding member 114, and the first holding member 114 is used for the second holding by the restoring force of the band member 110. In a state where the approach to the member 116 side is prohibited, the fastening bolt 130 is rotated in the anti-tightening direction or the opening nut 142 is rotated. Thereby, the space | interval of the 1st holding member 114 and the 2nd holding member 116 can be set to the space | interval 145 for mounting loosened more loosely than the clamping | tightening state. Therefore, the band member 110 can be maintained in the forcibly expanded state against the restoring force, that is, the above-described mounting interval 145. Therefore, the band member 110 is attached to the canopy 182 during automatic mounting by remote control. It is possible to prevent the drum can lid fastening ring 100 from interfering with the peripheral portion of the can body 181 and causing a trouble in the mounting operation. As described above, the mounting state setting member 140 has an effective structure for mounting the canopy 182 to which the drum canopy fastening ring 100 is attached to the can body 181 by remote control using a machine.
When the interval between the first holding member 114 and the second holding member 116 is set to the mounting interval 145, the head 131 of the fastening bolt 130 and the opening nut 142 cause the first holding member 114 to move. If it is too hard, the fastening bolt 130 may be difficult to rotate when the drum canopy fastening ring 100 is tightened, as will be described later. Therefore, in practice, the opening nut 142 is positioned so that the opening nut 142 and the first holding member 114 come into gentle contact.

As shown in FIG. 11, the canopy 182 to which the drum canopy fastening ring 100 is attached as described above automatically attaches the canopy 182 to the can body 181 and further tightens both of them with the drum canopy fastening ring 100. The canopy stacker 210 provided in the lid fastening device is stored in layers.
The canopy 182 with the drum canopy ring 100 attached in this way is transferred from the canopy stacker 210 to below the canopy mounting device 220 by the lid moving device as shown in FIG. The canopy mounting device 220 is attached to the suction device 221 that sucks the outer surface 1821 of the canopy 182, and can be attached to and detached from the head 131 of the fastening bolt 130. Device 222.
As shown in FIG. 13, such a canopy mounting apparatus 220 sucks and holds the canopy 182 with the drum canopy fastening ring 100 by the sucking apparatus 221 and further holds the bolt rotating device 222 at the head of the fastening bolt 130. Set in section 131.

  In such a state, the canopy mounting apparatus 220 transports the canopy 182 with the drum canopy snap ring 100 to the upper side of the can body 181 as shown in FIG. 14, and then descends to contact the canopy 182 with the can body 181. Make contact. After the contact, the band bolt 110 disposed at the mounting interval 145 is rotated by rotating the fastening bolt 130 with the bolt rotating device 222 and engaging with the tightening nut 124 of the engaging member 120. Tightening is performed by narrowing the interval between the first holding member 114 and the second holding member 116 up to the fastening interval 146 shown in FIG. By the fastening operation, the canopy 182 and the can body 181 are fastened and sealed by the drum can canopy fastening ring 100.

Further, the opening nut 142 of the mounting state setting member 140 rotates with the rotation of the fastening bolt 130 by the bolt rotating device 222. Therefore, as shown in FIG. 10, the position of the opening nut 142 is maintained in a state of gently contacting the first holding member 114 that is the initial state shown in FIG. 9. Therefore, the mounting state setting member 140 maintains the tightening interval 146 by the opening nut 142, and the head 131 of the fastening bolt 130, the first holding member 114, the opening nut 142, and the engaging member The drum canopy ring 100 is prevented from loosening by the engaging action of the 120 tightening nut 124. Since the opening nut 142 is in gentle contact with the first holding member 114 as described above, the above-described loosening prevention is actually gentle loosening prevention. As described above, since the drum can to which the drum can lid fastening ring 100 is attached is stored in the nuclear facility, the drum can is not frequently transported. Therefore, the fastening bolt 130 is rotated due to vibration caused by conveyance, and the drum canopy ring 100 is hardly loosened. Therefore, the necessary conditions are sufficiently satisfied by preventing the loosening.
In addition, when it is desired to prevent strong loosening, the tightening state by the drum can lid fastening ring 100 is slightly loosened, but by rotating the fastening bolt 130 in the anti-tightening direction to slightly widen the fastening interval 146, The first holding member 114 and the opening nut 142 can be firmly brought into contact with each other, and strong prevention of loosening can be achieved.

  After the tightening operation, the bolt rotating device 222 is separated from the fastening bolt 130, and the suction operation of the canopy 182 by the suction device 221 is stopped. Then, the canopy mounting device 220 moves up and returns to the original position to prepare for the next mounting operation.

  As described above, according to the drum can lid fastening ring 100 of the present embodiment, the following effects can be obtained. That is, the distance between the first holding member 114 and the second holding member 116 of the band member 110 varies from the mounting interval 145 to the tightening interval 146, and the direction of the central axis of the fastening bolt 130 is accordingly changed. Change. However, since the engaging member 120 fitted to the second holding member 116 is loosely fitted to the second holding member 116 as described above, the center axis of the tightening nut 124 is The direction can be matched with the direction of the central axis of the fastening bolt 130. In addition, the fastening bolt 130 is relatively gently inserted into the first holding member 114, and the orientation of the central axis of the fastening nut 124 and the orientation of the central axis of the fastening bolt 130 are as follows. Contributes to matching. Therefore, in the tightening operation of the tightening nut 124 and the tightening bolt 130, for example, it is possible to prevent a problem that the tightening operation becomes difficult, and it is possible to automatically perform the tightening operation by remote operation with a machine. It becomes possible.

FIG. 1 is a plan view of a drum can lid fastening ring according to an embodiment of the present invention. FIG. 2 is a front view of the drum canopy fastening ring shown in FIG. FIG. 3 is a perspective view of a fastening bolt, a mounting state setting member, and an engaging member provided in the drum can lid fastening ring shown in FIG. 1. FIG. 4 is a plan view of the engaging member provided in the drum canopy claw ring shown in FIG. 1. FIG. 5 is a perspective view showing a state in which a fastening bolt, a mounting state setting member, and an engaging member are attached to the first holding member and the second holding member of the drum canopy fastening ring shown in FIG. 1. FIG. 6 is a view showing a bolt holding portion in the first holding member and the second holding member of the drum can lid fastening ring shown in FIG. 1. FIG. 7 is a view showing a member for preventing detachment provided in the drum canopy fastening ring shown in FIG. 1. FIG. 8 is a view showing a state in which the engaging member is attached to the second holding member of the drum canopy fastening ring shown in FIG. 1. FIG. 9 is a view showing a state in which the band members of the drum canopy fastening ring shown in FIG. 1 are arranged at the mounting interval. FIG. 10 is a view showing a state in which the band members of the drum canopy fastening ring shown in FIG. 1 are arranged at the fastening interval. FIG. 11 is a perspective view of a device portion that houses the canopy to which the drum can lid fastening ring shown in FIG. 1 is attached. FIG. 12 is a perspective view of a canopy mounting device for mounting a canopy to which the drum can canopy ring shown in FIG. 1 is attached to an open drum. FIG. 13 is a perspective view showing a state in which the canopy mounting apparatus shown in FIG. 12 holds the canopy with the drum canopy ring attached, and the bolt rotating device of the canopy mounting apparatus is set on the fastening bolt. FIG. 14 is a perspective view showing a state in which the canopy mounting apparatus shown in FIG. 12 mounts the canopy with the drum canopy ring attached to the open drum can. FIG. 15 is a view showing a conventional canopy ring. FIG. 16 is a diagram for explaining a problem in a conventional canopy ring.

Explanation of symbols

110 ... Band member, 111 ... Desorption prevention member, 113 ... One end part,
114 ... first holding member, 115 ... other end, 116 ... second holding member,
120 ... engaging member, 121 ... fitting space, 122 ... through hole, 123 ... mounting member,
124: Tightening nut, 130: Fastening bolt, 131 ... Head, 132 ... Tip,
140: mounting state setting member, 145: mounting interval, 146: tightening interval,
180 ... open drum, 181 ... can body, 182 ... canopy,
1231 ... 1st member, 1232 ... 2nd member, 1821 ... Outer surface.

Claims (6)

A drum canopy ring for tightening the canopy and the can body of the open drum can (180) with a canopy (182) detachable from the can body (181) by remote control;
A band member having a discontinuous circular shape in which a peripheral portion of the canopy and a peripheral portion of the can body are fastened to be fastened, and is fastened to one end (113) of the band member. A bolt (130) can be inserted and has a first holding member (114) for holding the head (131) of the fastening bolt, and the fastening bolt is provided at the other end (115) of the band member. A band member (110) having a second holding member (116) through which the distal end portion (132) can be inserted;
It said a case engagement member fitted with respect to the second holding member, mounting member for preventing rotation of the engaging member in the axial direction around the fastening bolt (123), and該装wear member It is fixed to have a nut (124) for engaging said tip has passed through the second holding member, gently said second holding through the gap (125) relative to the mounting member and the nut An engagement member (120) for fitting the member for use ;
A drum canopy belt ring characterized by comprising: The mounting member is formed in a U-shape, and is two members provided to face each other. When the fastening bolt and the nut are screwed together, the fastening bolt extends in the direction around the axis. A first member (1231) that prevents the engagement member from rotating, and a second member (1232) that connects the two first members and forms a through hole (122) through which the tip of the fastening bolt penetrates. And the nut is opposed to the second member and connected and fixed to the two first members, and the engaging member includes the first member, the second member, and the nut. And has a fitting space (121) for gently fitting the second holding member through the gaps with the inner surfaces of the first member, the second member, and the nut. The drum canopy ring according to claim 1. When the fastening bolt that has passed through the first holding member and the second holding member is screwed into the nut in the engaging member fitted to the second holding member, the screw is screwed into the fastening bolt. A mounting state setting member located between the first holding member and the engaging member, wherein the canopy is open when the drum canopy fastening ring is provided on a peripheral portion of the canopy. When the drum body is mounted on the can body, the first holding member and the second holding space (145) that abuts on the first holding member and expands the band member to expand the mounting space (145). The drum can lid fastening ring according to claim 1 or 2, further comprising a mounting state setting member (140) for disposing a holding member.   The mounting state setting member is further configured to attach the canopy to the can body and fasten the drum canopy fastening ring by a fastening operation of the fastening bolt and the nut. The first holding member and the second holding member. Are arranged at a tightening interval (146), abut against the first holding member, maintain the tightening interval, and prevent loosening of the drum canopy ring by engaging with the nut. Item 4. A drum can lid fastening ring according to item 3.   The drum canopy ring is a member for preventing the drum canopy ring from being detached from the canopy in a state in which the drum canopy ring is provided at the peripheral portion of the canopy, and facing the outer surface (1821) of the canopy from the band member. The drum can lid fastening ring according to any one of claims 1 to 4, further comprising a protruding prevention member (111).   A drum can comprising the drum canopy fastening ring according to any one of claims 1 to 5.

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