JP6347176B2 - Pallet for hanging conveyance - Google Patents

Description

  The present invention relates to a hanging and conveying pallet used for placing an object to be conveyed under a radiation environment and suspending and conveying the object by a remote operation using a crane or the like.

  When transporting equipment and other transport objects in a radiation environment, workers are often not accessible and are often remotely operated.

  When transporting an object to be transported by such a remote operation, if a suspension bail is attached to the object to be transported, a hook of a lifting device such as a crane is hung on the suspension bail, and the object to be transported is directly suspended and transported. Things have been done.

  When such a suspended bail is not attached to the object to be conveyed, the object to be conveyed is placed on a pallet with a suspended bail and is conveyed by suspending the pallet.

  On the other hand, a pallet used in a radiation environment has been devised such as facilitating removal of a placed transport object, weight reduction, and facilitating visual recognition of the placed object from the outside.

  For this purpose, the pallet is a flat shape that is relatively wide in the lateral direction and has a low height, and has an open top shape without a lid.

  When this pallet is a two-point suspension type with a suspension bail, it is not stable when the distance in the height direction between the fulcrum (root) of the suspension bail and the center of gravity of the object to be transported is not stable, and the pallet during the transportation fluctuates and peripherals There is a risk that the object to be transported may fall due to tilting easily.

  Therefore, in the conventional pallet, a four-point suspension type has been adopted in which two suspending bail fulcrums are provided at two corner portions on one end side and two corner portions on the other end side. However, when loading / unloading the object to / from the pallet, the two sets of the suspension bales are deployed sideways. At that time, the suspension balils protrude greatly to the side of the pallet, so a large occupied space is required. Has been.

  In a radiation environment, there may be a case where a sufficient space cannot be taken. In such a case, there is a problem that the suspension bail cannot be conveyed by a four-point suspension type.

  From such a point of view, conventionally, a large occupied space for the hanging bail is not required even if the space for taking in / out the object to / from the pallet is not sufficient, and the transportation stability can be achieved. The reality is that a two-point hanging pallet is desired.

  2. Description of the Related Art Conventionally, as a two-point suspension type that stabilizes conveyance, there is one that suspends rice bowl. That is, the rice bowl main body has ears protruding from the side surfaces on both ends. A lifting handle using a metal wire is fitted into an ear and is bent in a U shape. The folded both ends of the lifting handle are folded to form a long hole portion, and the ear portions of both ends of the rice bowl main body are fitted into the long hole portion in a loosely fitted state. . The folded portion that is the end of the elongated hole portion is formed with a narrowed narrowed portion having a width narrower than that of the elongated hole portion, and when the rice bowl body is lifted by a lifting handle, the narrowed narrowed portion There is one that suspends the rice bowl main body in a stable state by locking the portion to the ear portion (see, for example, Patent Document 1).

  However, what is described in Patent Document 1 is intended for rice bowls, is not used in a radiation environment, and is not suspended by a lifting device such as a crane. Furthermore, what was described in Patent Document 1 is that by fitting the elongated holes on both ends of the handle for suspension to the ears on both ends of the rice bowl body and lifting the elongated holes, The ear portion is locked to the narrow hole portion, but there is no stop means that suppresses the relative displacement in the rotation direction between the ear portion and the narrow hole portion only by holding. Therefore, when an external force is applied to the rice bowl main body during suspension, the ear portion and the narrow hole portion may be relatively displaced in the rotation direction, and the rice bowl main body may tilt.

Japanese Utility Model Publication No. 61-179926

  Therefore, the present invention intends to provide a suspended transport pallet that prevents the pallet body from being tilted when suspended, even when suspended as a two-point suspension that does not require a large space for loading and unloading. It is.

In order to solve the above-described problems, the present invention provides a suspension conveyance device for placing an object to be conveyed in a radiation environment and suspending and conveying the object by a remote operation using a lifting device, as described in claim 1 . a pallet, the pallet body for placing the object to be transported, and an opening formed by cutting the both side wall portions one of opposite of the pallet body, both sides facing each of said one of said pallet body and engaging shaft provided in the central portion outside of the both side wall portions facing each other in a direction perpendicular to the wall portion, each engagement shaft provided on the pallet the body by engaging the base portion at both ends , a hanging bail that is to be able to pivot between an upright position and the losses facedown posture around the axis for the engagement, provided along the longitudinal direction on each root portion of the hanging bail, said pallet body When fitted to each engagement shaft, and該根source unit A long hole which case for shaft is so brought into relative displacement in the longitudinal direction of the該根source unit, and a key provided on the inside of the root portion of the hanging bail, the side walls of the have-axis the engagement of the pallet body said outer parts and a key groove formed in a position above the axis the engagement, when raised hanging along the long hole by the hanging bail on standing posture, engaging said key to said keyway It is configured to be locked together.

In the above configuration, as described in claim 2, the keyway includes two stop plates, and one stop plate has an arcuate guide surface centered on the engaging shaft. and, there is the hanging bail a structure in which the key when pivoting between said upright position and debt Fushimi attitude was along the guide surface.

The suspended conveying pallet of the present invention exhibits the following excellent effects.
(1) A pallet for suspending and transporting an object to be transported under a radiation environment and suspended and transported by a lifting device by remote operation, and is cut out on both opposite side walls of the pallet body. There is an opening formed, on the outside of the center part of the opposite side walls in the orthogonal direction as the one opposite side walls of the pallet body , the engagement shaft, and the position above the engagement shaft There is a key groove, and a long hole that engages with the engaging shaft and a key that engages with the key groove are provided at the base of both ends of the suspension bail. Even if there is, the key of the base part of the suspension bail can be locked in the key groove of the side wall of the pallet body by raising the suspension bail and pulling it upward along the long hole. Even if there is interference with the equipment, That the body is tilted out of balance becomes nil.
(2) According to the above (1), the object to be conveyed is not dropped during conveyance, and is suitable for conveyance by remote operation.

It is a perspective view which shows one Embodiment of the pallet for suspension conveyance of this invention. It is a top view of FIG. FIG. 3 is an AA enlarged arrow view of FIG. 2. It is a top view for description before the assembly | attachment of the state seen from the BB direction of FIG.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  1 to 4 show an embodiment of the hanging and conveying pallet of the present invention.

  The pallet I for suspending and transporting of the present invention is attached to the two opposing side wall portions of the pallet main body 1 so that the root portions of both ends of the suspending bail 17 can be pivoted, and when the suspending bail 17 is raised and raised. The base of the bail 17 is locked so that it cannot move laterally.

  The pallet main body 1 has a square shape in plan view, and is an upper open type without a lid. A floor plate 3 is only placed on the metal bottom 2 of the pallet body 1 so that disassembly is easy.

  On the edge of the bottom 2 of the pallet body 1, a pair of side walls 4 and 5 having a low height and having a skeleton structure for ease of viewing and weight reduction of the article placed on the floor board 3 are relative to each other. It is assembled to face. The pair of side wall portions 5 facing each other has an opening 6 formed by cutting out the central portion. This opening 6 is for facilitating removal of the article placed on the floor board 3.

  The metal columns 7 and the metal bars 8 of the side walls 4 and 5 having a frame structure are bolted to the bottom 2 and the metal cross beams 9.

  As described above, the pallet body 1 is made of metal and has strength so that it is not damaged even if it interferes with peripheral devices during transportation, and can be easily disassembled.

  A base plate 10 that rotates and locks the suspension bail 17 is attached to each central portion of the pair of side wall portions 4, that is, outside the central portion of the cross beam 9 in a vertical state.

  On the outer surface of each base plate 10, a cylindrical fixed shaft 11, which is an engagement shaft having a threaded portion 12 at the tip, is fixed slightly outwardly from the central portion and outward in a right angle direction. Yes. Stop plates 14 and 15 protrude outwardly so that a key groove 13 having a width larger than the diameter of the fixed shaft 11 is formed immediately above the fixed shaft 11 above the outer surface of each base plate 10. It is installed. One stop plate 14 extends vertically in a straight line. The other stop plate 15 has an upper end portion that forms a key groove 13 with the stop plate 14 extending linearly in the vertical direction, but the center of the fixed shaft 11 is centered from the middle position to the lower end portion. An arcuate guide surface 16 is formed.

  The suspension bail 17 is bent and formed so as to be positioned on the outside along the pair of side wall portions 4 and the other side wall portions 5 of the pallet main body 1 when it falls down.

  A long hole 19 and a key 20 are provided in the base portion 18 of the suspension bail 17.

  The long hole 19 is formed in the longitudinal direction of the end portion of the root portion 18, and the long hole 19 is fitted to the fixed shaft 11 on the pallet main body 1 side, whereby the root portion 18 of the suspension bail 17 is connected to the pallet main body 1. It has come to be installed in the device.

  The key 20 has a cylindrical shape, is sized to be locked by the stop plates 14 and 15 in the key groove 13, and is attached to the inside of the root portion 18 inward. The mounting position of the key 20 is set to the opposite end side from the long hole 19 of the root portion 18. As a result, the key 20 is engaged with the guide surface 16 of the stop plate 15 when the fixed shaft 11 is positioned at the opposite end of the elongated hole 19 of the root portion 18. Further, the key 20 is engaged with the key groove 13 between the stop plates 14 and 15 to be locked when the fixed shaft 11 is positioned at the end of the long hole 19 of the root portion 18. ing.

  Reference numeral 21 denotes a nut that engages with the threaded portion 12 at the distal end portion of the fixed shaft 11 after the elongated hole 19 of the root portion 18 of the suspension bail 17 is fitted to the fixed shaft 11 on the pallet body 1 side, and the root portion 18 is fixed. This prevents the shaft 11 from coming off. Reference numeral 22 denotes a hole provided in the floor board 3, which is used when an operator removes the floor board 3 when the degree of contamination is low. Reference numeral 23 denotes a reinforcing member of the base plate 10, and 24 denotes a reinforcing member of the root portion 18.

  Since the suspension conveyance pallet of the present invention is configured as described above, when attaching the root portion 18 of the suspension bail 17 to the pallet body 1 in order to suspend the pallet body 1 at two points, as shown in FIG. Just do it. Since the fixed shaft 11 protrudes from the front surface of the base plate 10 on the pallet body 1 side, the long hole 19 of the root portion 18 of the suspension bail 17 approaches the fixed shaft 11 as indicated by an arrow from the outside. Let it fit. At the same time, the key 20 is positioned inside the guide surface 16 of the stop plate 15. Next, the nut 21 is fitted to the threaded portion 12 of the fixed shaft 11 from the outside of the root portion 18 of the suspension bail 17 so as to press the root portion 18 toward the base plate 10 side.

  In this way, the objects to be transported are placed in order in the pallet body 1 to which the root portion 18 of the suspension bail 17 is attached. At this time, the suspension bail 17 is tilted as shown in FIG. The suspension bail 17 is a two-point suspension type in which the root portions 18 at both ends are attached to the base plate 10 of the opposite side wall portion 4 of the pallet body 1 via the long hole 19 and the fixed shaft 11. Even if it is turned down as shown in 1, it does not require a large space. Further, when the suspension bail 17 is tilted as shown in FIG. 1, the root portion 18 of the suspension bail 17 is in a state in which the position of the elongated hole 19 on the opposite end side is fitted to the fixed shaft 11. ing.

  The pallet body 1 in which the object to be conveyed is accommodated is conveyed by being hung by a lifting device such as a crane by remote control. When the suspension bail 17 is hung by being hooked by the lifting device, the suspension bail 17 is rotated around the fixed shaft 11 on the pallet body 1 side from the collapsed state as shown in FIG. At this time, the key 20 is displaced along the arcuate guide surface 16 of the stop plate 15 as shown by a one-dot chain line in FIG. Since the arc-shaped guide surface 16 is a circular arc having a radius centered on the axis of the fixed shaft 11, the movement of the key 20 can be guided smoothly and the suspension bail 17 can be rotated more smoothly. There is an advantage that can be.

  When the root portion 18 is in an upright state, the suspension bail 17 is disengaged from the guide surface 16 of the stop plate 15 and is positioned below the key groove 13 between the two stop plates 14 and 15. Will be. Subsequently, when the suspension bail 17 is lifted by the lifting device, the root portion 18 is displaced relative to the fixed shaft 11 by sliding between the long hole 19 of the root portion 18 and the fixed shaft 11, and the length of the long hole 19 is increased. Raised by minutes. As a result, the key 20 fixed to the root portion 18 rises together with the root portion 18 and enters the key groove 13 as shown by a two-dot chain line in FIG. 3, and the upper end portions of the two stop plates 14 and 15. To lock the lateral movement. Thereby, the suspension bail 17 will not fall down once it stands up.

  In this way, the pallet body 1 suspended by the suspension bail 17 with the root portion 18 locked is not inclined even if there is interference with peripheral devices during transportation of the transportation object, and the transportation object falls. The fear is prevented.

  After the pallet main body 1 containing the object to be transported is transported by remote operation, it is suspended at a target location and placed on the floor surface, etc., and then the suspended suspension bail 17 is lifted by the lifting force. It descends with its own load. At this time, the key 20 is positioned loosely in the key groove 13 between the upper ends of the stop plates 14 and 15, so that the key 20 can be easily and quickly lowered together with the root portion 18 of the suspension bail 17. It is done. Therefore, the suspension bail 17 can be immediately brought down from the standing state as shown in FIG. In addition, since the suspension bail 17 is a two-point suspension, even if it falls down as shown in FIG. 1, the fallen suspension bail 17 does not occupy a wide space.

  As described above, in the present invention, since it does not take much time to lower the suspension bail 17 after the pallet body 1 is suspended and transported, it is possible to quickly take out the object to be transported. It will be possible.

  The present invention is not limited to the above-described embodiment. For example, the key 20 attached to the root portion 18 of the suspension bail 17 may be fixed, but a rotating body may be used. Good. The fixed shaft 11 attached to the base plate 10 may have any shaft structure as long as it can engage with the long hole 19 of the root portion 18 of the suspension bail 17, and the shaft portion is a fixed shaft and its shaft. It may be in the form of a rotating shaft composed of a rotating body that rotates around the shaft. Of course, various modifications can be made without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Pallet main body, 4, 5 Side wall part, 10 Base plate, 11 Fixed shaft (engagement shaft), 13 Keyway, 14, 15 Stop plate, 16 Guide surface, 17 Hanging bail, 18 Root part, 19 Long hole, 20 Key

Claims (2)

A pallet for suspending and transporting objects to be transported under a radiation environment and suspended and transported by a lifting device by remote operation,
A pallet body for placing the object to be transported,
An opening formed by notching one of the opposite side walls of the pallet body;
An engagement shaft provided on the outer side of the center part of both side wall portions facing each other in a direction orthogonal to the one opposite side wall portions of the pallet body;
Hanging on the engaging shaft provided on the pallet the body by engaging the base portion at both ends, it is also available pivot between a standing posture and losses facedown posture around the axis for the engagement Vail and
Provided along the longitudinal direction on each root portion of the hanging bail, when fitted into each engagement shaft of the pallet body, so該根source unit and the engaging shaft is caused to relative displacement in the longitudinal direction of the該根source unit A long hole,
A key provided inside each root portion of the suspension bail;
A key groove provided at an upper position of each engaging shaft on the outside of both side wall portions where each engaging shaft of the pallet body is located ;
The suspended bail when raised hanging along the long hole in the upright position, hanging conveying pallet, characterized in that it has a configuration in which the key was to be locked is engaged with the keyway. The keyway is made of two stop plates, one stop plate has an arcuate guide surface centered on the engaging shaft, the hanging bail between said upright position and debt facedown posture The pallet for suspension conveyance according to claim 1, wherein the key is arranged along the guide surface when rotating.

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