JP2010100351A - Drum can gripping tool - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a drum can gripping tool capable of hanging out a drum can even in a storage shed low in the ceiling. <P>SOLUTION: A gripping tool body 12 has a hanger 17 in its trough part 16 by forming the trough part 16 in a central part by bending a frame member 15. Both end parts of the gripping tool body 12 are provided with a shackle 13 for connecting a sandwiching part 14 for sandwiching an end surface peripheral edge part of a drum can to the gripping tool body 12. Since a position of the hanger 17 becomes the trough part 16 under both end part positions of the gripping tool body 12, the drum can can be hung out even in the storage shed narrow in a space and low in the ceiling for hanging down the drum can gripping tool 11. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a drum can gripping tool used when individually lifting and transporting a drum can.

  For example, various solid wastes with low radioactivity levels generated at nuclear power plants and radioactive material handling facilities are packed in drums and stored in a waste storage (storage), finally reduced in volume, cement, etc. After being solidified, it is buried. Usually, four drum cans are stored in a three-tiered structure in a storage, and a metal flat table called a pallet is inserted between each stage in order to ensure handling of the drum cans and stability during storage. That is, when storing the drums in the storage, four drums are loaded on one pallet, transported as a set by a forklift, and stored in multiple rows of three layers in order from the back of the storage. I have to.

  If a large earthquake occurs with the drum can stored in such a storage, the drum can fall from the pallet or the pallet may tilt. In that case, it is necessary to hang one drum can at a time for all the collapsed drums, check the soundness while ensuring work safety and radiation safety, and load them again and store them in the storage.

To lift one drum can at a time, attach a drum can lifting tool used to lift the drum can to a lifting device such as a forklift or crane, and place a clamp device on the lifting frame lifted by the lifting device. Is gripped by the upper and lower nails (see, for example, Patent Document 1). Also, a first notch that engages with the protrusion on the peripheral edge of the drum can is formed at one end of the beam, and a second notch that engages with the protrusion on the peripheral edge of the drum can at the other end of the beam. Drum can with one or more hanging rings for engaging a fastening tool that has a notch and is slidable in the longitudinal direction of the beam and fixed to the beam at a predetermined position, and for attaching a wire rope or chain to the beam There is one that can be hung horizontally to easily take out oils in a drum can (see, for example, Patent Document 2).
JP 2003-40593 A Japanese Utility Model Publication No. 5-12477

  However, the storage has a low ceiling, and the one of Patent Document 1 requires a space for suspending the clamp device, so that it may be difficult to lift the collapsed drum can. That is, in the storage, when the drum can collapses and is stable with a delicate balance, the balance is lost by a slight impact or the like, and the drum can is likely to collapse again. Therefore, in order to hang the drum cans one by one under such circumstances, it is necessary to reverse the drum cans that are weighted by other drum cans and suspend the other drum cans from the weighted drum cans. For that purpose, it is necessary to hang from the collapsed upper drum can, but since the storage has a low ceiling, it is difficult to secure a space to suspend the clamp device, and it is difficult to hang from the upper drum can. .

  Moreover, in the thing of patent document 2, since the protrusion part of the end surface peripheral part of a drum can is engaged with the 1st notch part of a rod-shaped beam, and the 2nd notch part of the fastener fixed to a beam, If the wire rope or chain is shortened, there is not much space to hang, but the drum can be suspended by engaging the first notch with the protrusion on the peripheral edge of the drum can and then the second notch. Since the parts are engaged and the fastener is bolted, it takes time to hang the drum can.

  An object of the present invention is to provide a drum can gripping tool that can suspend a drum can even in a storage with a low ceiling.

  A drum can gripping tool according to the invention of claim 1 is provided for bending a frame member to form a trough at a central portion and having a suspender at the trough, and to sandwich the peripheral edge of the end surface of the drum can. It is characterized by comprising a clamping part and a shackle provided at both ends of the gripping tool body for connecting the clamping part to the gripping tool body.

  According to a second aspect of the present invention, there is provided a drum can gripping tool according to the first aspect of the present invention, wherein the length between both ends of the gripping tool main body is determined by connecting the holding portion to the shackle and the peripheral edge portions of the upper and lower ends of the drum can. Each of the drums has a length that allows the drum can to be hung horizontally when sandwiched by the clamping unit.

  According to a third aspect of the present invention, there is provided a drum can gripping tool according to the first aspect of the present invention, wherein the length between both end portions of the gripping tool main body is either one of the upper and lower end surfaces of the drum can connected to the shackle. The drum can be vertically suspended when the peripheral portion is clamped by the clamping unit.

  The drum can gripping tool according to the invention of claim 4 is the invention according to any one of claims 1 to 3, wherein the length of the trough in the direction of the suspension is shorter than the length between both ends of the gripping tool body. It is formed.

  According to the present invention, the gripping tool body is formed by bending the frame member to form a trough at the center, and a suspension is provided at the trough and suspended by a chain or wire rope. The drum can can be suspended even in a storage with a low ceiling below the positions of both ends of the main body. Moreover, since the clamping part is connected to the both ends of the gripping tool main body via a shackle and the end surface peripheral edge of the drum can is clamped by the clamping part, the drum can can be easily and reliably gripped.

  The length between both ends of the gripper body should be such that the drum can can be hung horizontally when the clamping part is connected to the shackle and the upper and lower edges of the drum can are clamped by the clamping part. For example, when the collapsed upper drum can is a sideways drum can, it can be hung sideways easily. Similarly, the length between both ends of the gripper body is formed so that the drum can can be suspended vertically when the clamping part is connected to the shackle and the peripheral part of either the upper or lower end of the drum can be clamped by the clamping part. If the upper drum can collapsed is a vertically oriented drum, it can be easily suspended vertically.

  In addition, the length of the valley portion in the direction of the suspension (valley depth) is shorter than the length between both ends of the gripper main body, so that when the drum can is suspended, the suspension portion of the valley portion is 180 degrees. ° Does not rotate. Therefore, the drum can can be stably suspended even if the distance from the ceiling is short.

  1 is a configuration diagram of an example of a drum can gripping tool according to an embodiment of the present invention, FIG. 1 (a) is a front view, FIG. 1 (b) is a plan view of a gripping tool main body of the drum can gripping tool, FIG. (C) is a front view of the shackle of a drum can gripping tool.

  The drum can gripping tool 11 is provided with shackles 13 at both ends of the gripping tool main body 12, and a clamping portion 14 for clamping the peripheral edge of the drum can is attached to the shackle 13. The gripping tool main body 12 is formed by bending a frame member 15, has a trough portion 16 in the center portion, and a hanging hand 17 is provided in the trough portion 16. Reinforcing portions 15 a are formed from the suspension 17 toward both ends of the gripper main body 12 to reinforce the frame member 15. Shackles 13 for connecting the clamping part 14 to the gripping tool body 12 are attached to both ends of the gripping tool body 12 by, for example, welding.

  The angle θ between the frame member 15 and the shackle 13 at both ends of the gripping tool body 12 is held when the end edge of the drum can is held by the holding part 14 and is hung by hanging a wire rope or chain on the hanging hand 17. It is determined in consideration of a vertical force and a horizontal force acting on the portion 14. Usually, the angle θ is around 60 ° and is in the range of 50 ° to 70 °. Accordingly, a vertical force for lifting the drum can is ensured, and a horizontal force for supporting the drum can by the holding portion 14 is ensured.

  FIG. 2 is a perspective view of the clamping unit 14. The clamping part 14 is attached to the shackle 13 by attaching a clamping piece 18 and a hook lever 19 by a connecting shaft 20, and attaching an attachment fitting to an attachment part 19 a of the hook lever 19. The clamping piece 18 is formed with a fixed claw 18a and a support portion 18b. The fixing claw 18a of the clamping piece 18 clamps the peripheral edge portion of the drum can together with the driving claw 19b of the hook lever 19 when the hook lever 19 is rotated about the connecting shaft 20, and the support 18b of the clamping piece 18 is the drum 18 The holding piece 18 is supported in contact with the surface.

  In the no-load state, the fixing claw 18a of the clamping piece 18 and the driving claw 19b of the hook lever 19 are in contact by a spring (not shown) attached to the hook lever 19, and the fixing claw 18a of the clamping piece 18 and the hook lever When the peripheral edge of the drum can is clamped by the drive claw 19b of the drum 19 and the suspension 17 of the drum can gripping tool 11 is suspended, the drive claw 19b of the hook lever 19 fixes the clamping piece 18 around the connecting shaft 20. The claw 18a rotates in a direction that increases the clamping force. Accordingly, the holding force of the peripheral edge portion of the drum can becomes stronger by suspending the suspension hand 17 of the drum can gripping tool 11.

  FIG. 3 is an external view when the drum can 21 is suspended in the vertical direction. The drum can gripping tool 11 is mounted on the peripheral edge 24 on either the upper or lower side of the drum can 21, and the drum can gripping tool 11 is suspended from the hanging jig 22 by the chain 23. In this case, the length between the both end portions of the grip body 12 of the drum can gripper 11 is set to a length suitable for suspending the drum can 21 vertically. The length suitable for vertically suspending the drum can 21 is such that the holding portion 14 is connected to the shackles 13 at both ends of the gripper body 12, and the end surface peripheral edge 24 of the drum can 21 in the vertical direction is held by the holding portion 14. The length of the drum can 21 can be suspended vertically.

  First, the clamping unit 14 is mounted on the peripheral edge 24 of the end surface of the drum can 21 in the vertical direction. Specifically, the peripheral edge 24 of the drum can 21 is sandwiched between the fixed claw 18 a of the clamping piece 18 and the driving claw 19 b of the hook lever 19. As described above, the end surface peripheral edge 24 of the drum can 21 can be sandwiched between the fixing claw 18 a of the clamping piece 18 and the driving claw 19 b of the hook lever 19 by the spring attached to the hook lever 19. In this case, the support portion 18b of the holding piece 18 contacts the surface of the drum can and supports the holding piece 18.

  When the clamping portion 14 is completely attached to the peripheral edge 24 of the drum can 21, the drum can gripping tool 11 is suspended from the suspension jig 22 by the chain 23. When the drum can gripping tool 11 is suspended, the driving claw 19b of the hook lever 19 rotates about the connecting shaft 20 in the direction of increasing the clamping force on the fixed claw 18a of the clamping piece 18, so that the drum can gripping tool 11 is suspended. Thereby, the clamping force of the edge surface peripheral part of a drum can becomes firmer.

  Here, the length (valley depth) of the trough portion 16 of the gripper main body 12 in the suspension direction is shorter than the length between both ends of the gripper main body 12. This is to prevent the suspension hand 17 of the valley portion 16 from rotating 180 ° when the drum can 21 is suspended by the drum can gripping tool 11.

  In the above description, the case where the drum can 21 is suspended in the vertical direction has been described, but the drum can 21 can also be suspended in the lateral direction. FIG. 4 is a plan view of the drum can gripping tool when the drum can 21 is suspended in the lateral direction. In contrast to what is shown in FIG. 1, the length between both ends of the grip body 12 of the drum can grip 11 is a length suitable for suspending the drum 21. The length suitable for horizontally suspending the drum can 21 is such that the holding portions 14 are connected to the shackles 13 at both ends of the gripper main body 12, and the upper and lower end surface peripheral portions 24 of the drum can 21 are set in the horizontal direction. 14, the drum can 21 can be hung horizontally.

  Also in this case, when the drum can 21 is suspended by the drum can gripping tool 11, the lifting hand 17 of the trough 16 in the direction of the hand of the trough 16 of the gripping tool main body 12 is prevented so that the hanger 17 of the trough 16 does not rotate 180 °. The length (depth of the valley) is formed to be shorter than the length between both ends of the gripping tool body 12.

  FIG. 5 is an external view when the drum can 21 is suspended in the horizontal direction. The drum can gripping tool 11 is mounted on the peripheral edge 24 of the upper and lower end surfaces of the drum can 21, and the drum can gripping tool 11 is suspended from the hanging jig 22 by the chain 23. Also in this case, as in the case of the vertical suspension shown in FIG. 3, when the drum can gripping tool 11 is suspended, the drive claw 19 b of the hook lever 19 is moved to the fixed claw 18 a of the clamping piece 18 around the connecting shaft 20. Rotating in the direction of increasing the clamping force, the clamping force at the peripheral edge of the end face of the drum can becomes stronger.

  According to the embodiment of the present invention, the gripper body 12 of the drum can gripper 11 is formed by bending the frame member 15 to form a trough 16 at the center, and by providing a hanging hand 17 at the trough 16. Since it is hung with a wire rope, the position of the lifting hand 17 is lower than the positions of both ends of the gripper body 12. Therefore, since the hanging position can be set downward, the drum can 21 can be suspended even in a storage with a low ceiling.

  Further, shackles 13 are attached to both ends of the gripping tool main body 12 of the drum can gripping tool 11 by welding, and a clamping part 14 is connected to the shackle 13 so that the fixed claw 18a and the driving claw 19b are spring-loaded with no load. The end surface peripheral edge 24 of the drum can 21 is clamped by the holding portion 14 in contact, and the holding force of the end surface peripheral edge 24 of the drum can 21 is strengthened by suspending the drum can gripping tool 11. It can be done easily and reliably.

  Further, since the drum can 21 can be hung horizontally or vertically by selecting the length of the grip body 12 of the drum can gripper 11, the drum can be easily moved regardless of whether the collapsed upper drum can is horizontal or vertical. 21 can be suspended.

The block diagram of an example of the drum can gripping tool concerning embodiment of this invention. The perspective view of the clamping part in embodiment of this invention. The external view at the time of hanging a drum can in the vertical direction with the drum can gripping tool shown in FIG. The block diagram of another example of the drum can gripping tool concerning embodiment of this invention. The external view at the time of hanging a drum can laterally with the drum can gripping tool shown in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 ... Drum can gripping tool, 12 ... Grasping tool main body, 13 ... Shackle, 14 ... Clamping part, 15 ... Frame member, 15a ... Reinforcement part, 16 ... Valley part, 17 ... Suspension hand, 18 ... Clamping piece, 18a ... Fixed nail , 18b ... support part, 19 ... hook lever, 19a ... mounting part, 19b ... drive claw, 20 ... connecting shaft, 21 ... drum can, 22 ... hanging jig, 23 ... chain, 24 ... peripheral edge of end face

Claims (4)

A grip body with a frame member bent to form a trough in the center and a hanging hand in the trough,
A clamping part for clamping the peripheral edge of the drum can;
A drum can gripping tool provided with shackles provided at both ends of the gripping tool main body for connecting the clamping part to the gripping tool main body.   The length between the both ends of the gripper body is such a length that the drum can can be hung horizontally when the holding portion is connected to the shackle and the upper and lower end face peripheral portions of the drum can are respectively held by the holding portion. The drum can gripping tool according to claim 1.   The length between both end portions of the gripper body is a length that allows the drum can to be suspended vertically when a clamping portion is connected to the shackle and the peripheral edge of either the upper or lower end of the drum can is clamped by the clamping portion. The drum can gripping tool according to claim 1, wherein:   The drum can gripping device according to any one of claims 1 to 3, wherein a length of the valley portion in the direction of a hand is formed shorter than a length between both end portions of the gripping device main body.

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