JP2015087315A - Container transport system and carriage positioning method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a container transport system and the like capable of appropriately positioning a frame while improving stability of radioactive material storage containers such as casks at a time of positioning the frame.SOLUTION: A container transport system includes: a frame 10 installed on a floor surface 25 and capable of mounting thereon casks; an air pallet inserted between the frame 10 and the floor surface 25 for floating the frame 10 by air; a carriage 11 engaged with the frame 10 for moving the frame 10 floated by the air pallet 12; and a positioning pin 49 provided on the floor surface 25 for restricting a position of the carriage 11, the carriage 11 including a pin storage portion 48 engaged with the positioning pin 49.

Description

  The present invention relates to a container transport system for transporting a radioactive substance storage container and a positioning method of a transport carriage.

  Conventionally, a storage rack on which a cask is fixed, a cask transport base on which a plurality of airbags for loading the storage base are arranged, a rear drive device and a front drive device for horizontally moving the cask transport base, and a storage base A cask transport system including a positioning guide pin driving mechanism is known (for example, see Patent Document 1). In this cask transport system, the positioning guide pin drive mechanism provided in the storage stand has a positioning guide pin, and the positioning guide pin is inserted into the positioning guide pin insertion hole formed in the embedded metal embedded in the floor of the storage facility. The storage stand is positioned by inserting.

  In addition, a base installed on the floor and capable of mounting a cask, a jack capable of lifting the base relative to the floor, and a gap formed between the base lifted by the jack and the floor, There is known a container transport system including an air pallet that floats by air and a transport carriage that is engaged with the gantry and moves the cradle that is levitated by the air pallet (see, for example, Patent Document 2). In this container transport system, the platform is transported to a predetermined position by moving the platform floated by the air pallet by the transport cart engaged with the platform.

JP 2007-248068 A JP 2013-088205 A

  By the way, in the cask transport system of Patent Document 1, when positioning the storage stand, since the positioning guide pin drive mechanism is provided in the storage stand, the impact generated when positioning the storage stand is easily transmitted to the storage stand. There is a possibility that the stability of the transported cask may be impaired.

  SUMMARY OF THE INVENTION It is an object of the present invention to provide a container transport system and a transport cart positioning method capable of suitably positioning the mount while improving the stability of the radioactive substance storage container during positioning of the mount. To do.

  The container transport system of the present invention is a pedestal installed on the floor and capable of mounting a radioactive substance storage container, inserted between the pedestal and the floor, and a levitating device for levitating the pedestal with air, A carriage that engages with a gantry and moves the gantry levitated by the levitation device, and a positioning unit that is provided on the floor and regulates the position of the carrier trolley. It has the engaging part engaged with a positioning part, It is characterized by the above-mentioned.

  According to this configuration, the conveyance carriage can be positioned by engaging the engagement portion of the conveyance carriage with the positioning portion provided on the floor surface, whereby the pedestal that engages with the conveyance carriage Can also be positioned. For this reason, even if an impact occurs during positioning of the transport cart, the impact is transmitted to the mount via the transport cart, making it difficult for the impact to be transmitted to the mount, and improving the stability of the radioactive substance storage container mounted on the mount. Can be achieved. In addition, the positioning part may be a positioning member that protrudes from the floor surface. In this case, the engaging part is an accommodation part that regulates the position of the transport carriage by receiving the positioning member. On the other hand, the positioning portion may be a positioning groove formed on the floor surface. In this case, the engaging portion is a positioning member accommodated in the positioning groove.

  In this case, the positioning portion is a pair of positioning pins protruding from the floor surface, and the engaging portion is formed on the front side in the traveling direction of the transport carriage and receives a pair of pins that respectively receive the positioning pins. Part.

  According to this configuration, by moving the transport carriage forward, receiving the pair of positioning pins in the pair of pin housing portions, and engaging the pair of pin housing portions and the pair of positioning pins, The position of the transport carriage can be regulated. For this reason, since a conveyance trolley can be positioned only by moving a conveyance trolley forward, a conveyance trolley can be positioned easily.

  In this case, it is preferable that the pin accommodating portion has a tapered shape that tapers from the front side toward the rear side.

  According to this configuration, the positioning of the positioning pin can be facilitated by forming the pin accommodating portion into a tapered shape. Moreover, the position of the positioning pin can be accurately regulated with respect to the pin housing part by moving the transport carriage forward and relatively moving the positioning pin to the rear side of the pin housing part.

  In this case, it is preferable to further include a traction device that includes a connector that connects the positioning pin and the transport carriage, and a winding unit that winds up the connector and draws the transport carriage toward the positioning pin.

  According to this configuration, the conveyance carriage can be moved toward the positioning pin with high accuracy by pulling the conveyance carriage to the positioning pin by the traction device.

  In this case, it is preferable to further include a carriage guide member that is provided on the floor surface and guides the conveyance carriage toward the positioning portion.

  According to this configuration, the conveyance carriage can be accurately moved toward the positioning pin by guiding the conveyance carriage by the carriage guide member provided on the floor surface. In addition, it is preferable that the carriage guide member is detachably provided on the floor surface.

  In this case, it is preferable that the cart guide member is a guide roller that is in rolling contact with the side of the transport cart in the traveling direction.

  According to this configuration, since the conveyance carriage can be guided while the guide roller is in rolling contact with the side of the conveyance carriage, the conveyance carriage can be smoothly moved toward the positioning pin.

  In this case, it is preferable to further include a fastening member that fastens the mount and the transport carriage.

  According to this configuration, since the gantry and the conveyance carriage can be fixed by the fastening member, the gantry and the conveyance carriage can be easily positioned.

  In this case, it is preferable that the said fastening member is a fastening screw which fastens the said mount frame and the said conveyance trolley.

  According to this configuration, the gantry and the conveyance carriage can be easily fixed by fastening the gantry and the conveyance carriage using the fastening screws.

  In this case, it is preferable that the fastening member includes a connecting member, a carriage-side fastening screw that fastens the connecting member and the transport carriage, and a gantry-side fastening screw that connects the connecting member and the gantry. .

  According to this configuration, the connecting member and the transport carriage are fastened using the cart side fastening screw, and the connecting member and the stand are connected using the base side fastening screw. Can be easily fixed.

  In this case, a fixing hole for fixing the pedestal to the floor surface is formed through the pedestal, and the fastening member is provided in the linking member and the linking member and is inserted into the fixing hole. It is preferable to include a protrusion, and a carriage side fastening screw that fastens the connecting member and the transport carriage.

  According to this structure, the protrusion of the coupling member is inserted into the fixing hole of the gantry, and the gantry and the transport cart are easily fixed by fastening the coupling member and the transport cart using the cart-side fastening screw. be able to.

  The positioning method of the transport carriage according to the present invention includes a pedestal installed on the floor and capable of mounting a radioactive substance storage container, a levitation device inserted between the pedestal and the floor, and floating the pedestal with air. A container carriage comprising: a carriage that engages with the platform and moves the platform floated by the levitation device; and a pair of positioning pins that project from the floor and regulate the position of the carriage A method of positioning a transport carriage in a system, wherein the transport carriage has a pair of pin accommodating portions that are formed on the front side in a traveling direction and receive and engage a pair of positioning pins, respectively. Advancing forward in the traveling direction, receiving the pair of positioning pins in the pair of pin housing portions, and engaging the pair of pin housing portions and the pair of positioning pins. In Rukoto, to a pair of the positioning pins, characterized in that for regulating the position of the transport vehicle.

  According to this configuration, since the transport carriage can be positioned only by moving the transport carriage forward, the transport carriage can be easily positioned.

FIG. 1 is a schematic configuration diagram of a container transport system according to the first embodiment. FIG. 2 is a plan view schematically illustrating the gantry according to the first embodiment. FIG. 3 is a side view schematically illustrating the gantry according to the first embodiment. FIG. 4 is a plan view schematically illustrating the transport cart according to the first embodiment. FIG. 5 is a cross-sectional view schematically illustrating the transport cart according to the first embodiment. FIG. 6 is a partial plan view illustrating a transport carriage and a pedestal with which the container transport system according to the first embodiment is engaged. FIG. 7 is a partial cross-sectional view illustrating a transport carriage and a base to which the container transport system according to the first embodiment is engaged. FIG. 8 is a cross-sectional view schematically illustrating the wheel unit according to the first embodiment. FIG. 9 is a plan view schematically illustrating the air pallet according to the first embodiment. FIG. 10 is a side view schematically illustrating the air pallet according to the first embodiment. FIG. 11 is an explanatory diagram regarding an example of the levitation operation of the gantry of the container transport system according to the first embodiment. FIG. 12 is an explanatory diagram regarding an example of the levitation operation of the gantry of the container transport system according to the first embodiment. FIG. 13 is an explanatory diagram regarding an example of the positioning operation of the gantry of the container transport system according to the first embodiment. FIG. 14 is a partial plan view illustrating a transport carriage and a pedestal with which the container transport system according to the second embodiment is engaged. FIG. 15 is an explanatory diagram regarding an example of the positioning operation of the gantry of the container transport system according to the third embodiment. FIG. 16 is an explanatory diagram regarding an example of the positioning operation of the gantry of the container transport system according to the fourth embodiment. FIG. 17 is a perspective view schematically illustrating a guide roller of the container transport system according to the fourth embodiment. FIG. 18 is a partial plan view illustrating a transport carriage and a base that are engaged in the container transport system according to the fifth embodiment. FIG. 19 is a partial cross-sectional view illustrating a transport carriage and a base to which the container transport system according to the fifth embodiment is engaged. FIG. 20 is a partial plan view illustrating a transport carriage and a base that are engaged in the container transport system according to the sixth embodiment. FIG. 21 is a partial cross-sectional view illustrating a transport carriage and a pedestal with which the container transport system according to the sixth embodiment engages.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. The present invention is not limited to the following examples. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

  The container transport system according to the first embodiment is for transporting a radioactive substance storage container. Here, the radioactive substance storage container is, for example, a cylindrical cask capable of containing spent nuclear fuel. Hereinafter, the container transfer system will be described with reference to FIG.

  FIG. 1 is a schematic configuration diagram of a container transport system according to the first embodiment. The container transport system 1 includes a gantry 10 on which the cask 5 can be mounted, a transport trolley 11 that can transport the gantry 10, and an air pallet (levitation device) 12 that lifts the gantry 10 with air. In addition, the container transport system 1 supplies a control panel 21 that controls the transport carriage 11 and the air pallet 12, an air compressor 22 that supplies air toward the transport carriage 11 and the air pallet 12, and supplies power to the control panel 21. And a power supply device 23.

  The gantry 10 will be described with reference to FIGS. 2 and 3. FIG. 2 is a plan view schematically illustrating the gantry according to the first embodiment. FIG. 3 is a side view schematically illustrating the gantry according to the first embodiment. The gantry 10 is mounted on the floor 25 while the cask 5 is mounted in a state where the axial direction of the cask 5 is a vertical direction (vertically placed). The gantry 10 is fixed (secured) while being installed on the floor surface 25 when the cask 5 is not transported. On the other hand, the gantry 10 moves away from the floor surface 25 when the cask 5 is transported.

  The gantry 10 includes a gantry body 31, a plurality of legs 32 provided on the lower surface of the gantry body 31, and a plurality of fixtures 33 provided on the upper surface of the gantry body 31. The gantry body 31 is formed in a rectangular shape in plan view in a long depth direction (vertical direction in FIG. 2) and a short width direction (horizontal direction in FIG. 2) perpendicular to the depth direction. . The gantry body 31 is formed with a pair of gantry side engaging portions 31a on both side surfaces in the width direction. The pair of gantry-side engaging portions 31 a are protrusions that protrude outward in the horizontal direction at the upper part in the vertical direction (see FIG. 3) on both outer side surfaces of the gantry body 31. Each gantry-side engaging portion 31 a is formed in the depth direction on the outer surface of the gantry body 31. The transport carriage 11 is engaged with the pair of gantry side engaging portions 31a. Although details will be described later, the gantry 10 is lifted by a jack 44 provided on the trolley 11 and the trolley 11 is engaged with the gantry-side engaging portion 31a.

  The plurality of legs 32 support the gantry body 31 between the gantry body 31 and the floor surface 25. The plurality of legs 32 are provided on both outer sides and the center in the width direction, and a plurality of legs 32 are arranged in the depth direction. At this time, a plurality of fixing holes 31 b for fixing the gantry 10 to the floor surface 25 are formed in the gantry 10, and each fixing hole 31 b penetrates from the gantry body 31 to each leg 32 in the vertical direction. Is formed. In addition, although the some leg 32 forms a clearance gap between the mount main body 31 and the floor surface 25, the height of the clearance gap formed is lower than the height in which the air pallet 12 can be inserted. .

  A fixing bolt (anchor bolt) 34 is inserted into the fixing hole 31 b formed through the gantry body 31 and the leg 32. The fixing bolt 34 is fastened to a fastening hole 35 formed in the floor surface 25, thereby fixing the gantry 10.

  The plurality of fixtures 33 fix the cask 5 mounted on the gantry body 31. The plurality of fixtures 33 are provided around the cask 5 placed vertically on the gantry body 31. In the first embodiment, four fixing tools 33 are provided and arranged around the cask 5 having a circular shape in plan view with a phase difference of 90 °.

  Next, the transport carriage 11 will be described with reference to FIGS. 4 and 5. FIG. 4 is a plan view schematically illustrating the transport cart according to the first embodiment, and FIG. 5 is a cross-sectional view schematically illustrating the transport cart according to the first embodiment. The transport carriage 11 engages and lifts the gantry 10 and moves the gantry 10.

  The transport carriage 11 includes a carriage frame 41, a plurality of wheel units 43 provided on the carriage frame 41, and a plurality of jacks 44 provided on the carriage frame 41.

  The carriage frame 41 is formed in a concave shape in plan view. That is, the carriage frame 41 has a pair of opposed long side portions 41a extending in the long depth direction (vertical direction in FIG. 4) and a short width direction perpendicular to the depth direction (horizontal direction in FIG. 4). The short side portion 41b is connected to one end portion (the upper end portion in FIG. 4) of the pair of long side portions 41a. And the mount frame 10 is accommodated inside the cart frame 41 constituted by the pair of long side portions 41a and short side portions 41b. Further, the carriage frame 41 is formed in a rectangular tube shape having an internal space, and a plurality of wheel units 43 and a plurality of jacks 44 are accommodated in the internal space of the carriage frame 41.

  In addition, a pair of long side portions 41 a of the bogie frame 41 is provided with a pair of bogie side engaging portions 41 c. The pair of carriage-side engaging portions 41c are protrusions that protrude inward in the horizontal direction at the lower portions in the vertical direction (see FIG. 5) on both inner side surfaces of the pair of long side portions 41a. Moreover, each cart side engaging part 41c is formed over the depth direction in the inner surface of the long side part 41a. The pair of gantry-side engaging portions 31a of the gantry 10 are engaged with the pair of trolley-side engaging portions 41c. That is, when the gantry 10 and the transport carriage 11 are engaged, both inner side surfaces of the pair of long side portions 41 a are opposed to both outer side surfaces of the gantry 10. At this time, since the gantry side engaging portion 31a is located on the upper side in the vertical direction and the trolley side engaging portion 41c is located on the lower side in the vertical direction, the gantry side engaging portion 31a and the trolley side engaging portion 41c overlaps in the vertical direction (see FIG. 7). The gantry side engaging portion 31a and the trolley side engaging portion 41c that overlap in the vertical direction are fastened and fixed by a fastening screw 50 as a fastening member.

  Next, the structure around the fastening screw 50 will be described with reference to FIGS. 6 and 7. FIG. 6 is a partial plan view showing a transport carriage and a base that are engaged in the container transport system according to the first embodiment. FIG. 7 is a plan view of the transport cart and the base that are engaged in the container transport system according to the first embodiment. FIG. As shown in FIG. 7, an insertion hole 71 through which the fastening screw 50 is inserted is formed through the pedestal side engaging portion 31 a of the pedestal 10. As shown in FIG. 6, the insertion hole 71 is provided between the fixing holes 31b of the gantry 10 in the depth direction, for example. Further, a plurality of insertion holes 71 are formed along the depth direction in which the gantry-side engaging portion 31a extends. On the other hand, a fastening hole 72 in which the fastening screw 50 is fastened is formed in the cart-side engaging portion 41 c of the transport cart 11. The fastening holes 72 are respectively formed at positions that overlap with the positions of the plurality of insertion holes 71. The fastening screw 50 is inserted from the insertion hole 71 of the gantry 10 and fastened to the fastening hole 72, whereby the gantry 10 and the transport carriage 11 are fastened and fixed. As a result, the gantry 10 and the transport carriage 11 are connected. Positioned.

  Referring to FIG. 4 again, a pair of pin accommodating portions (engaging portions) 48 are provided on the pair of long side portions 41 a of the carriage frame 41. When the depth direction of the transport carriage 11 is defined as the traveling direction, the pair of pin accommodating portions 48 has an end portion on the front side of the pair of long side portions 41a (the other end portion: the lower end portion in FIG. 4). ) Respectively.

  As shown in FIG. 6, each pin accommodating portion 48 has a positioning groove 75 that is formed so as to be immersed toward the rear side, and the positioning groove 75 projects from the floor surface 25 in the vertical direction. The (positioning part) 49 is formed to be a groove that can be received from the horizontal direction. Specifically, the positioning groove 75 includes a front side taper groove part 75a and a rear side pin accommodation groove part 75b communicating with the taper groove part 75a. The tapered groove portion 75a has a tapered shape in a plan view in which the groove width is tapered from the front side toward the rear side. For this reason, the taper groove 75a has a wider groove on the front side than the groove on the rear side, and the groove width on the front side of the taper groove 75a is larger than the diameter of the cylindrical positioning pin 49. It has become. The pin housing groove portion 75b has a planar view shape with the same groove width from the front side toward the rear side. The pin housing groove portion 75 b has the same groove width as the groove width on the rear side of the tapered groove portion 75 a, and has substantially the same groove width as the diameter of the cylindrical positioning pin 49.

  Here, the pair of positioning pins 49 will be described with reference to FIG. As described above, a plurality of fastening holes 35 for fixing the gantry 10 are formed on the floor surface 25, and a pair of positioning pins 49 protrude from the floor surface 25. At this time, the positions of the plurality of fastening holes 35 and the pair of positioning pins 49 are the positions of the fixing hole 31b of the gantry 10 conveyed to the conveyance carriage 11 and the pair of pin accommodation portions 48 (the pin accommodation groove portions 75b) of the conveyance carriage 11. It has the same positional relationship as the position. For this reason, when the conveyance carriage 11 is positioned by the pair of positioning pins 49, since the gantry 10 is positioned on the conveyance trolley 11, the pair of positioning pins 49 and the gantry 10 are positioned. Thereby, the fixing hole 31b of the mount 10 and the fastening hole 35 of the floor surface 25 are overlapped in the vertical direction.

  For example, four wheel units 43 are provided at four corners of the carriage frame 41. That is, the four wheel units 43 are respectively provided at both ends of the pair of long side portions 41a. For this reason, since the several wheel unit 43 is arrange | positioned around the mount frame 10 accommodated in the trolley | bogie frame 41, the mount frame 10 can be moved freely on a floor surface. Specifically, the transport cart 11 can be moved in the depth direction after moving the gantry 10 in the width direction, and the transport cart 11 can be moved at a right angle. In addition, it can be swung on the spot about the approximate center of the gantry 10 and can be moved obliquely with respect to the width or depth direction of the gantry 10. That is, the container transport system 1 is a container transport system 1 that can turn the transport cart 11 on the spot.

  The wheel unit 43 will be described with reference to FIG. FIG. 8 is a cross-sectional view schematically illustrating the wheel unit according to the first embodiment. Each wheel unit 43 includes a wheel 51, a drive motor 52 that can drive the wheel 51, a turning motor 53 that can turn the wheel 51 (see FIG. 1), and an air cylinder 54 that can move the wheel 51 in the vertical direction. have.

  The wheel 51 is configured to be able to rotate while being grounded to the floor surface 25. A drive motor 52 is provided inside the wheel 51, and the drive motor 52 causes the wheel 51 to function as a drive wheel by rotating the wheel 51 in a predetermined rotation direction. As shown in FIG. 1, the turning motor 53 turns the wheels 51 so as to be switchable in a horizontal plane so that the wheels 51 rotate in the width direction or the depth direction. The air cylinder 54 moves the wheel 51 between the upper position L1 and the lower position L2 by moving the wheel 51 downward in the vertical direction. That is, the air cylinder 54 moves the wheel 51 to the upper position L1 by performing a contraction operation, and moves the wheel 51 to the lower position L2 by performing an extension operation.

  For example, six jacks 44 are fixed to the carriage frame 41 and operate so as to be vertically liftable between the lifting position L3 and the release position L4 by the hydraulic pressure of the hydraulic oil (FIGS. 11 and 12). reference). Three of the six jacks 44 are provided on each of the pair of long side portions 41a. The three jacks 44 provided on each long side portion 41a are arranged side by side between the two wheel units 43 provided on both ends of each long side portion 41a. Each jack 44 can lift the carriage frame 41 in the vertical direction. Each jack 44 moves to the lifting position L3 by extending toward the lower side in the vertical direction, and moves to the release position L4 by contracting toward the upper side in the vertical direction. For this reason, each jack 44 can lift the gantry 10 engaged with the trolley frame 41 by lifting the trolley frame 41. That is, when the jack 44 lifts the carriage frame 41, the carriage side engaging portion 41 c of the carriage frame 41 abuts (engages) with the gantry side engaging portion 31 a of the gantry 10. When the jack 44 further lifts the carriage frame 41, the carriage 10 is lifted in a state where the carriage side engaging portion 41 c and the gantry side engaging portion 31 a are in contact with each other, whereby the pedestal 10 is lifted. When the gantry 10 is lifted, the bottom surface of the gantry body 31 is separated from the floor surface, thereby forming a gap into which the air pallet 12 can be inserted between the bottom surface of the gantry body 31 and the floor surface. .

  With reference to FIG. 1 again, the transport carriage 11 will be described. The transport carriage 11 includes an operation panel 45 for an operator to operate the transport carriage 11, a hydraulic unit 46 that supplies hydraulic oil to the jack 44, and an air distribution that distributes air to be supplied to the air cylinder 54. And a board 47.

  The operation panel 45 is provided around the short side portion 41b. The power supply device 23 is connected to one side of the operation panel 45 via the control panel 21, and a plurality of drive motors 52 and a plurality of swivels are connected to the other side. A motor 53 and a hydraulic unit 46 are connected. When a predetermined operation is performed by the worker so that the transport carriage 11 performs a predetermined operation, the operation panel 45 outputs the operation input by the worker to the control panel 21, and the control panel 21 The plurality of drive motors 52, the plurality of swing motors 53, and the hydraulic unit 46 are controlled via the operation panel 45 so as to perform control according to the input operation.

  The hydraulic unit 46 is provided around the short side portion 41 b and is provided adjacent to the operation panel 45. The power unit 23 is connected to the hydraulic unit 46 via the operation panel 45 and the control panel 21. The hydraulic unit 46 can adjust the hydraulic pressure of the hydraulic oil by the electric power supplied from the power supply device 23. A plurality of jacks 44 are connected to the hydraulic unit 46. The hydraulic unit 46 causes the jack 44 to perform a lifting operation (extension operation) by increasing the hydraulic pressure in the jack 44. On the other hand, the hydraulic unit 46 releases the lifting operation (contraction operation) by the jack 44 by lowering the hydraulic pressure in the jack 44. Therefore, when the operator performs a predetermined operation on the operation panel 45 so that the transport carriage 11 performs a predetermined operation, the operation panel 45 outputs the operation input by the operator to the control panel 21. At the same time, the control panel 21 controls the hydraulic unit 46 via the operation panel 45 so as to perform control according to the input operation.

  The empty board 47 is provided around the short side portion 41b. The air compressor 22 is connected to one side of the empty board 47, and a plurality of air cylinders 54 and the empty board 65 of the air pallet 12 (details) are connected to the other side. Is connected). In addition, the power supply device 23 is connected to the empty board 47 via the operation panel 45 and the control panel 21. The empty board 47 distributes the air supplied from the air compressor 22 to the plurality of air cylinders 54 and the empty board 65 of the air pallet 12. In addition, the empty board 47 raises the air pressure in the air cylinder 54, thereby extending the air cylinder 54 and moving the wheel 51 to the lower position L2. On the other hand, the empty board 47 lowers the air pressure in the air cylinder 54 to cause the air cylinder 54 to contract and move the wheels 51 to the upper position L1. Therefore, when the operator performs a predetermined operation on the operation panel 45 so that the transport carriage 11 performs a predetermined operation, the operation panel 45 outputs the operation input by the operator to the control panel 21. At the same time, the control panel 21 controls the empty board 47 via the operation panel 45 so as to perform control according to the input operation.

  Next, the air pallet 12 will be described with reference to FIGS. 9 and 10. FIG. 9 is a plan view schematically illustrating the air pallet according to the first embodiment, and FIG. 10 is a side view schematically illustrating the air pallet according to the first embodiment. The air pallet 12 is inserted between the gantry 10 lifted by the transport carriage 11 and the floor surface 25, and the gantry 10 is lifted by air to reduce friction between the gantry 10 and the floor surface 25.

  The air pallet 12 includes a pallet base 61, a plurality of air bearings 62 provided on the lower surface of the pallet base 61, and a pair of spacers 63 provided on the upper surface of the pallet base 61. The air pallet 12 includes a plurality of wheels 64 attached to the pallet base 61 and an empty board 65 (see FIG. 1) that distributes the air supplied toward the air bearing 62.

  The pallet base 61 is formed in a plate shape that is rectangular in plan view in a long depth direction (vertical direction in FIG. 9) and a short width direction (horizontal direction in FIG. 9) perpendicular to the depth direction. Has been. The plurality of air bearings 62 forms an air layer with the floor surface 25 by supplying air, and reduces friction with the floor surface 25. In the first embodiment, for example, six air bearings 62 are attached to the lower surface of the pallet base 61 so that there are two rows in the width direction and three rows in the depth direction. Each air bearing 62 swells when air is supplied, and forms an air layer between the air bearing 62 and the air pallet 12 levitation. Thereby, when the air pallet 12 operates each air bearing 62, the height in the vertical direction increases. On the other hand, each air bearing 62 is shrunk and shrunk when released without being supplied with air.

  The pair of spacers 63 are attached to the upper surface of the pallet base 61 so as to extend in the depth direction adjacent to the width direction. For example, two wheels 64 are provided, and are attached to one end of the pallet base 61 in the depth direction. The two wheels 64 are attached to the pallet base 61 side by side in the width direction. The two wheels 64 are grounded to the floor surface 25 in a rotatable manner when air is not supplied to the air bearing 62 and is blown. On the other hand, the two wheels 64 are separated from the floor surface 25 when air is supplied to the air bearing 62 and the air is inflated.

  As shown in FIG. 1, the empty board 65 is provided on one side of the pallet base 61 in the depth direction, and an empty board 47 of the transport carriage 11 is connected to one side thereof, and the other side is connected to the other side. A plurality of air bearings 62 are connected. The empty board 65 distributes the air supplied from the empty board 47 to the plurality of air bearings 62. The empty board 65 operates each air bearing 62 by supplying air to each air bearing 62. On the other hand, the empty board 65 stops the operation of each air bearing 62 by stopping the supply of air to each air bearing 62.

  The control panel 21 is connected to the operation panel 45 of the transport carriage 11, and controls the hydraulic unit 46, the empty board 47, the plurality of drive motors 52, and the turning motor 53 of the transport carriage 11 via the operation panel 45. . Further, the control panel 21 controls the empty distribution board 65 of the air pallet 12 via the operation panel 45 and the empty distribution board 47.

  The air compressor 22 is connected to the power supply device 23 via the control panel 21. The air compressor 22 compresses air with electric power supplied from the power supply device 23. The operation of the air compressor 22 is controlled by the control panel 21.

  The power supply device 23 is controlled by the control panel 21 and supplies power to the transport carriage 11 via the control panel 21. That is, the power supply device 23 supplies power to the operation panel 45, the hydraulic unit 46, the drive motor 52, the turning motor 53, and the like of the transport carriage 11.

  Next, a container transport method for transporting the cask 5 using the container transport system 1 described above will be described with reference to FIGS. 11 to 13. FIG. 11 is an explanatory diagram regarding an example of the levitation operation of the gantry of the container transport system according to the first embodiment. FIG. 12 is an explanatory diagram regarding an example of the levitation operation of the gantry of the container transport system according to the first embodiment. FIG. 13 is an explanatory diagram regarding an example of the positioning operation of the gantry of the container transport system according to the first embodiment. The container transport method includes a positioning method of the gantry 10 for positioning the gantry 10 with respect to the trolley 11 (a cradle positioning process described later), and a transport trolley for positioning the transport cart 11 with respect to the pair of positioning pins 49. 11 positioning methods (cart positioning step described later). Further, in FIGS. 11 and 12, the cask 5 is not shown.

  As shown in FIG. 11, the gantry 10 on which the cask 5 is mounted is installed at a predetermined position on the floor surface 25 (step S101). At this time, the transport carriage 11 is in a state where the plurality of wheels 51 are located at the upper position L1, and the plurality of jacks 44 are located at the release position L4. The transport carriage 11 accommodates the gantry 10 inside the trolley frame 41 so that the trolley side engaging portion 41c overlaps the gantry side engaging portion 31a in the vertical direction (step S102).

  Thereafter, the operator performs a predetermined input operation for extending the plurality of jacks 44 of the transport carriage 11 on the operation panel 45. Then, the operation panel 45 outputs a predetermined input operation toward the control panel 21. The control panel 21 controls the hydraulic unit 46 of the transport carriage 11 based on a predetermined input operation input from the operation panel 45, and raises the hydraulic pressure in the jack 44 by the hydraulic unit 46, thereby Make the lifting operation.

  When the plurality of jacks 44 perform the lifting operation, the jack 44 moves from the release position L4 to the lifting position L3. Therefore, after the carriage side engaging portion 41c abuts (engages) the gantry side engaging portion 31a, the pedestal 10 is lifted by a plurality of jacks 44 in order to lift the pedestal side engaging portion 31a (steps). S103). The lifted gantry 10 is separated from the lower surface of the gantry body 31 and the floor surface 25, thereby forming a gap into which the air pallet 12 can be inserted between the lower surface of the gantry body 31 and the floor surface 25. .

  After lifting the gantry 10, the operator inserts the fastening screw 50 into the insertion hole 71 of the gantry side engaging portion 31 a and fastens the fastening screw 50 to the fastening hole 72 of the cart side engaging portion 41 c, thereby engaging. The pedestal side engaging portion 31a and the trolley side engaging portion 41c to be fixed are fixed (step S104: pedestal positioning step). As a result, the gantry 10 is fastened and fixed to the transport carriage 11, whereby the gantry 10 and the transport carriage 11 are positioned.

  As shown in FIG. 12, the non-actuated air pallet 12 is moved and inserted by the wheels 64 into the gap formed by lifting the gantry 10 (step S105). At this time, the air pallet 12 is inserted so that the legs 32 of the gantry 10 are positioned between and on both sides of the pair of spacers 63. The inserted non-operating air pallet 12 is not in contact with the gantry 10, and a slight gap is formed between the air pallet 12 and the gantry 10.

  Thereafter, the operator performs a predetermined input operation on the operation panel 45 for moving the plurality of wheels 51 of the transport carriage 11 to the lower position L2. Then, the operation panel 45 outputs a predetermined input operation toward the control panel 21. Based on a predetermined input operation input from the operation panel 45, the control panel 21 controls the empty distribution board 47 of the transport carriage 11 to increase the air pressure in the air cylinder 54, thereby extending each air cylinder 54. Operate and move each wheel 51 to the lower position L2. Thereby, the several wheel 51 of the conveyance trolley 11 contacts the floor surface 25 (step S106).

  Subsequently, the operator operates the plurality of air bearings 62 of the air pallet 12 on the operation panel 45 and performs a predetermined input operation for releasing the lifting of the transport carriage 11 by the plurality of jacks 44. The control panel 21 controls the empty distribution board 65 of the air pallet 12 based on a predetermined input operation input from the operation panel 45 and supplies each air bearing 62 with air, thereby operating each air bearing 62. Let When each air bearing 62 is operated, the air pallet 12 is lifted, so that the upper surface of each spacer 63 comes into contact with the lower surface of the gantry body 31. As a result, the gantry 10 is in a state of being lifted by the air pallet 12 (step S107). At this time, since the gantry 10 and the transport carriage 11 are fixed by the fastening screws 50, the load applied to the transport carriage 11 is also reduced when the gantry 10 is lifted.

  In addition, the control panel 21 controls the hydraulic unit 46 of the transport carriage 11 based on a predetermined input operation input from the operation panel 45, and lowers the hydraulic pressure in the jack 44 by the hydraulic unit 46. The lifting operation by 44 is released (step S107). When the lifting operation of the plurality of jacks 44 is released, the jack 44 moves to the release position L4. As a result, the gantry 10 becomes movable by the transport carriage 11.

  As shown in FIG. 13, when the gantry 10 is movable, the operator drives the plurality of wheels 51 of the transport carriage 11 via the operation panel 45 by the drive motor 52, so that the cask 5 is mounted. The mounted platform 10 is conveyed. At this time, the transport carriage 11 is moved so that the pair of pin accommodating portions 48 faces the pair of positioning pins 49 protruding from the floor surface 25 (step S108).

  Then, the pair of positioning pins 49 are accommodated in the positioning grooves 75 of the pair of pin accommodating portions 48 by advancing the transport carriage 11 from the state shown in step S108. At this time, each positioning pin 49 is first accommodated in the taper groove 75a of the positioning groove 75 and then accommodated in the pin accommodation groove 75b. For this reason, since the positioning pin 49 is received in the tapered groove portion 75 a having a groove width wider than the diameter of the positioning pin 49, the positioning pin 49 can be easily accommodated in the positioning groove 75. As the transport carriage 11 moves forward, the positioning pin 49 moves relative to the rear of the taper groove 75a, so that the position in the width direction is relatively regulated by the groove width of the taper groove 75a. While being, it is accommodated in the pin accommodating groove 75b. Since the positioning pin 49 accommodated in the pin accommodating groove 75b is received by the pin accommodating groove 75b having a groove width substantially the same as the diameter of the positioning pin 49, the position of the transport carriage 11 in the width direction is regulated, By abutting the positioning pin 49 against the pin housing groove 75b, the position of the transport carriage 11 in the depth direction is regulated. Accordingly, the transport carriage 11 moves forward toward the pair of positioning pins 49 and is positioned by the pair of positioning pins 49 (step S109: carriage positioning step).

  In addition, after positioning the transport carriage 11, the gantry 10 is lifted by the transport carriage 11 by moving the jack 44 from the release position L4 to the lifting position L3. And after moving the some wheel 51 of the conveyance trolley 11 from the lower position L2 to the upper position L1, while accommodating the several wheel 51 of the conveyance trolley 11, and making the air pallet 12 non-operation state, the air pallet 12 Remove. Thereafter, by removing the fastening screw 50, the fastening and fixing between the gantry side engaging portion 31a and the cart side engaging portion 41c is released. Subsequently, the gantry 10 is grounded to the floor surface 25 by moving the jack 44 from the lifting position L3 to the release position L4. After grounding the floor 10 of the gantry 10, the transport carriage 11 is removed, the fixing bolt 34 is inserted into the fixing hole 31 b of the gantry 10, and the fixing bolt 34 is fastened to the fastening hole 35 of the floor 25 overlapping the fixing hole 31 b. . As a result, the gantry 10 is secured to the floor surface 25.

  As described above, according to the configuration of the first embodiment, the pair of pin accommodating portions 48 of the transport carriage 11 is abutted against the pair of positioning pins 49 protruding from the floor surface 25, thereby positioning the transport carriage 11. Thus, positioning of the gantry 10 fixed to the transport carriage 11 can also be performed. For this reason, even if an impact occurs due to contact with the pair of positioning pins 49 when the transport carriage 11 is positioned, the impact is transmitted to the gantry 10 via the transport trolley 11, so that the impact on the gantry 10 is difficult to be transmitted. The stability of the cask 5 mounted on the gantry 10 can be improved.

  Moreover, according to the structure of Example 1, since the conveyance trolley 11 can be moved forward and the conveyance trolley 11 can be positioned, the conveyance trolley 11 can be positioned easily.

  In addition, according to the configuration of the first embodiment, the front side of the positioning groove 75 of the pin accommodating portion 48 is the tapered groove portion 75a, so that the positioning pin 49 can be easily received. Further, after the transport carriage 11 is moved forward and the positioning pin 49 is moved relatively to the rear side of the taper groove portion 75a, the positioning pin 49 is brought into contact with the pin housing groove portion 75b, so that the positioning pin 49 is brought into contact with the pin housing portion 48. The position can be regulated with high accuracy.

  Moreover, according to the structure of Example 1, since the mount frame 10 and the conveyance trolley 11 can be fastened and fixed with the fastening screw 50, the mount frame 10 and the conveyance trolley 11 can be positioned easily. At this time, since the gantry 10 and the transport carriage 11 are fixed by the fastening screws 50, the load applied to the transport trolley 11 can be reduced by floating the gantry 10 with the air pallet 12, and the wheels of the transport trolley 11 can be reduced. The load to 51 (wheel unit 43) can be suppressed.

  Further, according to the configuration of the first embodiment, the transport carriage 11 is lifted by the jack 44, and the transport carriage 11 and the gantry 10 are fastened by the fastening screw 50 in a state where the transport trolley 11 and the gantry 10 are engaged. Can do. For this reason, the conveyance trolley | bogie 11 and the mount frame 10 can be fastened and fixed without loosening.

  In the first embodiment, the positioning of the transport carriage 11 is performed by receiving the positioning pin 49 protruding from the floor surface 25 in the pin accommodating portion 48 of the transport carriage 11, but the present invention is not limited to this configuration. For example, while providing the pin accommodating part 48 in the floor surface 25, providing the positioning pin 49 in the conveyance trolley 11 and receiving the positioning pin 49 of the conveyance carriage 11 in the pin accommodating part 48 of the floor surface 25, the conveyance trolley 11 Positioning may be performed.

  In the first embodiment, a pair of positioning pins 49 are provided as positioning portions and a pair of pin accommodating portions 48 are provided as engaging portions, but the shape and the number of installed positioning portions and engaging portions are not particularly limited. As long as the position of the transport carriage 11 can be regulated in the width direction and the depth direction, any shape and number of installations may be used.

  Next, the container transport system 100 according to the second embodiment will be described with reference to FIG. FIG. 14 is a partial plan view illustrating a transport carriage and a pedestal with which the container transport system according to the second embodiment is engaged. In the second embodiment, parts different from the first embodiment will be described in order to avoid redundant description with the first embodiment, and the same components will be described with the same reference numerals. In the container transport system 100 according to the second embodiment, the pin accommodating portion 48 provided in the transport carriage 11 has a positioning groove 101 having a shape different from that of the first embodiment.

  As shown in FIG. 14, the positioning groove 101 according to the second embodiment has a tapered shape in a plan view in which the groove width is tapered from the front side toward the rear side. For this reason, the positioning groove 101 has a wider groove width on the front side than the groove width on the rear side. The groove width on the front side of the positioning groove 101 is larger than the diameter of the cylindrical positioning pin 49, and the groove width on the rear side of the positioning groove 101 is smaller than the diameter of the cylindrical positioning pin 49. It has become.

  For this reason, the pair of pin accommodating portions 48 and the pair of positioning pins 49 of the conveying cart 11 are opposed to each other, and the conveying cart 11 is moved forward so that the positioning grooves 101 of the pair of pin accommodating portions 48 have a pair of positioning grooves 101. The positioning pin 49 is accommodated. At this time, each positioning pin 49 is accommodated in the tapered positioning groove 101. For this reason, since the positioning pin 49 is received in the positioning groove 101 having a groove width wider than the diameter of the positioning pin 49, the positioning pin 49 can be easily accommodated in the positioning groove 101. The positioning pin 49 moves relative to the rear of the positioning groove 101 having a narrower groove width than the diameter of the positioning pin 49 as the transport carriage 11 moves forward, so that the position of the positioning pin 49 in the width direction is increased. Is restricted, and the position of the positioning pin 49 in the depth direction is restricted by hitting the positioning groove 101. Accordingly, the transport carriage 11 is positioned by the pair of positioning pins 49 by moving forward toward the pair of positioning pins 49.

  As described above, also in the configuration of the second embodiment, the conveyance carriage 11 is positioned by abutting the pair of pin accommodating portions 48 of the conveyance carriage 11 against the pair of positioning pins 49 protruding from the floor surface 25. Thus, positioning of the gantry 10 fixed to the transport carriage 11 can also be performed. For this reason, even if an impact occurs due to contact with the pair of positioning pins 49 when the transport carriage 11 is positioned, the impact is transmitted to the gantry 10 via the transport trolley 11, so that the impact on the gantry 10 is difficult to be transmitted. The stability of the cask 5 mounted on the gantry 10 can be improved.

  Next, the container transport system 110 according to the third embodiment will be described with reference to FIG. FIG. 15 is an explanatory diagram regarding an example of the positioning operation of the gantry of the container transport system according to the third embodiment. In Example 3, parts different from those in Examples 1 and 2 will be described in order to avoid overlapping descriptions with Examples 1 and 2, and the same components will be described with the same reference numerals. The container transport system 110 according to the third embodiment further includes a winch (traction device) 111, and the winch 111 is provided on the transport cart 11.

  As shown in FIG. 15, the winch 111 is provided on each of the pair of long sides 41 a of the carriage frame 41 of the transport carriage 11. Each winch 111 includes a wire (connector) 115 that connects the transport carriage 11 and each positioning pin 49, and a winding drum (winding portion) 116 that winds the wire 115. The winch 111 is controlled by the connected control panel 21 and is used when the transport carriage 11 is advanced toward the pair of positioning pins 49.

  Accordingly, in a state where the pair of pin accommodating portions 48 and the pair of positioning pins 49 of the transport carriage 11 are opposed to each other, the wires 115 are pulled out from the pair of winches 111 provided on the transport carriage 11, and the pulled wires 115 are paired with each other. The positioning pins 49 are respectively connected. The pair of positioning pins 49 are accommodated in the positioning grooves 75 of the pair of pin accommodating portions 48 by winding the wire 115 by the hoisting drum 116 of the winch 111 and moving the transport carriage 11 forward.

  As described above, according to the configuration of the third embodiment, since the transport carriage 11 can be attracted to the pair of positioning pins 49 by the winch 111, the transport carriage 11 can be accurately moved toward the pair of positioning pins 49. Can do.

  In the third embodiment, the winch 111 is provided on the transport carriage 11, but may be provided on the floor surface 25 around the positioning pin 49. In this case, the wire 115 of the winch 111 is connected to the transport carriage 11, the wire 115 is wound up by the hoisting drum 116, and the transport carriage 11 is drawn to the pair of positioning pins 49.

  Next, with reference to FIG.16 and FIG.17, the container conveyance system 120 which concerns on Example 4 is demonstrated. FIG. 16 is an explanatory diagram regarding an example of the positioning operation of the gantry of the container transport system according to the fourth embodiment, and FIG. 17 is a perspective view schematically illustrating the guide roller of the container transport system according to the fourth embodiment. . In the fourth embodiment as well, parts different from the first to third embodiments will be described in order to avoid overlapping descriptions with the first to third embodiments, and the same components will be described with the same reference numerals. The container transport system 120 according to the fourth embodiment further includes a guide roller (cart guide member) 121 that guides the transport cart 11, and the guide roller 121 is provided on the floor surface 25.

  As shown in FIG. 16, a pair of guide rollers 121 are provided so as to make rolling contact with both sides in the width direction of the transport carriage 11. The guide roller 121 includes, for example, three rollers 125 and is arranged side by side in the depth direction of the transport carriage 11. Further, the guide roller 121 is provided with a connecting member 127 that connects the three rollers 125 on the upper side of the rotation shaft 126, and the connecting member 127 connects the three rollers 125 together, The positional relationship between the rollers 125 is maintained. Of the three rollers 125 of the pair of guide rollers 121, the pair of rollers 125 on the rear side in the depth direction are arranged at an interval wider than the width of the transport carriage 11, thereby facilitating reception of the transport carriage 11. On the other hand, among the three rollers 125 of the pair of guide rollers 121, the pair of rollers 125 in the front in the depth direction and the pair of rollers 125 in the center in the depth direction have substantially the same width as the width of the transport carriage 11. The movement of the transport carriage 11 in the width direction is restricted.

  As shown in FIG. 17, the guide roller 121 is detachably provided on the floor surface 25. The three rollers 125 of the guide roller 121 can be inserted into the mounting holes 128 formed on the floor 25 at the lower side of the rotation shaft 126. For this reason, the guide roller 121 can be attached to and detached from the floor surface 25 by inserting / removing the lower side of the rotating shaft 126 of each roller 125 into the mounting hole 128.

  Therefore, when the transport carriage 11 is advanced in a state where the pair of pin accommodating portions 48 and the pair of positioning pins 49 of the transport carriage 11 are opposed to each other, the transport carriage 11 is guided by the pair of guide rollers 121 while being paired. The pair of positioning pins 49 are accommodated in the positioning grooves 75 of the pin accommodating portion 48.

  As described above, according to the configuration of the fourth embodiment, since the transport carriage 11 can be guided by the pair of guide rollers 121, the transport carriage 11 can be accurately moved toward the pair of positioning pins 49. .

  Next, a container transport system 130 according to the fifth embodiment will be described with reference to FIGS. FIG. 18 is a partial plan view showing a transport carriage and a base that are engaged in a container transport system according to a fifth embodiment, and FIG. 19 is a diagram of a transport cart and a base that are engaged in a container transport system according to the fifth embodiment. FIG. In the fifth embodiment as well, parts different from those in the first to fourth embodiments will be described in order to avoid overlapping descriptions with the first to fourth embodiments, and the same components will be described with the same reference numerals. In the container transport system 130 of the fifth embodiment, the gantry 10 and the transport trolley 11 are fastened and fixed using a connecting plate 131, a gantry side fastening screw 132, and a trolley side fastening screw 133.

  As shown in FIG. 19, a gantry-side fastening hole 134 through which the gantry-side fastening screw 132 is inserted is formed on the upper surface of the gantry-side engaging portion 31 a of the gantry 10. As illustrated in FIG. 18, the gantry-side fastening hole 134 is provided between the fixing holes 31 b of the gantry 10 in the depth direction, for example. A plurality of gantry-side fastening holes 134 are formed along the depth direction in which the gantry-side engaging portion 31a extends. A carriage-side fastening hole 135 to which a carriage-side fastening screw 133 is fastened is formed in the transport carriage 11. The carriage side fastening hole 135 is formed on the inner side (inner surface) of the long side portion 41 a of the carriage frame 41. The gantry 10 is accommodated inside the transport carriage 11 such that the gantry side fastening hole 134 and the trolley side fastening hole 135 are adjacent to each other in the width direction of the transport carriage 11. The connecting plate 131 is an L-shaped plate in which a bent portion 131 a is formed. One side of the connecting plate 131 is connected to the upper surface of the gantry 10 and the other side is connected to the inner surface of the transport carriage 11 across the bent portion 131 a.

  Therefore, when the gantry 10 and the transport carriage 11 are fastened and fixed, one of the connection plates 131 is brought into contact with the upper surface of the gantry 10 and overlapped with the gantry-side fastening hole 134. Further, the other of the connection plates 131 is brought into contact with the inner surface of the transport carriage 11 and overlapped with the carriage side fastening hole 135. Then, one of the connection plates 131 is fastened and fixed to the frame 10 by fastening the frame-side fastening screw 132 to the frame-side fastening hole 134 with one side of the connection plate 131 interposed therebetween. In addition, the other side of the connection plate 131 is fastened to the transport carriage 11 by fastening the carriage side fastening screw 133 to the carriage side fastening hole 135 with the other side of the connection plate 131 interposed therebetween. As a result, the gantry 10 and the transport cart 11 are fastened and fixed, and the gantry 10 and the transport cart 11 are positioned.

  As described above, according to the configuration of the fifth embodiment, the gantry 10 and the transport carriage 11 can be fastened and fixed by the connecting plate 131, the gantry side fastening screw 132, and the trolley side fastening screw 133. The transport carriage 11 can be easily positioned. Also in this case, since the gantry 10 and the transport carriage 11 are fixed by the connecting plate 131, the gantry side fastening screw 132, and the trolley side fastening screw 133, the carrier 10 is lifted by the air pallet 12 so that The applied load can be reduced, and the load on the wheel 51 (wheel unit 43) of the transport carriage 11 can be suppressed.

  Next, a container transport system 140 according to Embodiment 6 will be described with reference to FIGS. FIG. 20 is a partial plan view showing a transport carriage and a base that are engaged in the container transport system according to the sixth embodiment. FIG. 21 is a plan view of the transport cart and the base that are engaged in the container transport system according to the sixth embodiment. FIG. In the sixth embodiment as well, parts different from the first to fifth embodiments will be described in order to avoid overlapping descriptions with the first to fifth embodiments, and the same components will be described with the same reference numerals. In the container transport system 140 according to the sixth embodiment, the gantry 10 and the transport cart 11 are fastened and fixed by using a connection plate 141 and a cart-side fastening screw 142.

  As shown in FIG. 21, a fixing hole 31 b through which the fixing bolt 34 is inserted is formed through the gantry 10. Further, a carriage-side fastening hole 143 to which a carriage-side fastening screw 142 is fastened is formed in the transport carriage 11. The carriage side fastening hole 143 is formed on the inner side (inner surface) of the long side portion 41 a of the carriage frame 41. The gantry 10 is accommodated inside the transport carriage 11 so that the fixing hole 31b and the carriage-side fastening hole 143 are adjacent to each other in the width direction of the transport carriage 11. The connecting plate 141 is an L-shaped plate in which a bent portion 141a is formed. A projecting portion 141b that is inserted into the fixing hole 31b of the gantry 10 is formed on one side of the connecting plate 141 with the bent portion 141a interposed therebetween. The connecting plate 141 has one side engaged with the fixing hole 31b of the gantry 10 and the other side connected to the inner surface of the transport carriage 11 with the bent portion 141a interposed therebetween.

  Therefore, when the gantry 10 and the transport carriage 11 are fastened and fixed, the protrusion 141b formed on one side of the connection plate 141 is inserted into the fixing hole 31b of the gantry 10, and one of the connection plates 141 is engaged with the gantry 10. Combine. Further, the other of the connecting plates 141 is brought into contact with the inner surface of the transport carriage 11 and overlapped with the carriage side fastening hole 143. Then, the other side of the connection plate 141 is fastened to the transport carriage 11 by fastening the carriage side fastening screw 142 to the carriage side fastening hole 143 across the other side of the connection plate 141. As a result, the gantry 10 and the transport cart 11 are fastened and fixed, and the gantry 10 and the transport cart 11 are positioned.

  As described above, according to the configuration of the sixth embodiment, the gantry 10 and the transport carriage 11 can be fastened and fixed by the connecting plate 141 and the trolley-side fastening screw 142. Can be positioned.

DESCRIPTION OF SYMBOLS 1 Container transfer system 5 Cask 10 Mounting frame 11 Transfer carriage 12 Air pallet 21 Control panel 22 Air compressor 23 Power supply device 25 Floor 31 Mounting frame main body 31a Mounting frame side engaging part 31b Fixing hole 32 Leg 33 Fixing tool 34 Fixing bolt 35 Fastening hole 41 Carriage frame 41a Long side part 41b Short side part 41c Carriage side engaging part 43 Wheel unit 44 Jack 45 Operation panel 48 Pin accommodating part 49 Positioning pin 50 Fastening screw 51 Carriage carriage wheel 61 Pallet base 62 Air bearing 71 Mounting hole for mounting 72 Fastening hole of conveyance carriage 75 Positioning groove 75a Taper groove part 75b Pin accommodation groove part 100 Container conveyance system (Example 2)
101 Positioning groove 110 Container transfer system (Example 3)
111 winch 115 wire 116 hoist drum 120 container transfer system (Example 4)
121 Guide roller 125 Roller 126 Rotating shaft 127 Connecting member 128 Mounting hole 130 Container transport system (Example 5)
131 connecting plate 131a bent portion 132 gantry side fastening screw 133 trolley side fastening screw 134 gantry side fastening hole 135 trolley side fastening hole 140 container transport system (Example 6)
141 Connecting plate 141a Bending part 141b Protruding part 142 Dolly side fastening screw 143 Dolly side fastening hole L1 Upper position L2 Lower position L3 Lifting position L4 Release position

Claims (11)

A stand installed on the floor and capable of mounting a radioactive substance storage container;
A levitation device that is inserted between the gantry and the floor and levitates the gantry with air;
A transport carriage that engages the gantry and moves the gantry levitated by the levitation device;
A positioning portion that is provided on the floor and regulates the position of the transport carriage,
The container transport system, wherein the transport carriage has an engaging portion that engages with the positioning portion. The positioning portion is a pair of positioning pins protruding from the floor surface,
2. The container transport system according to claim 1, wherein the engaging portion is a pair of pin housing portions that are formed on the front side in the traveling direction of the transport cart and receive the positioning pins.   The container transport system according to claim 2, wherein the pin housing portion has a tapered shape that tapers from the front side toward the rear side.   The traction device further comprising: a coupling device that couples the positioning pin and the transport carriage; and a winding unit that winds up the coupling tool and draws the transportation cart to the positioning pin. 4. The container transport system according to 3.   5. The container transport system according to claim 1, further comprising a cart guide member that is provided on the floor surface and guides the transport cart toward the positioning unit.   The container transport system according to claim 5, wherein the cart guide member is a guide roller that is in rolling contact with a side of the transport cart in the traveling direction.   The container transport system according to claim 1, further comprising a fastening member that fastens the gantry and the transport carriage.   The container fastening system according to claim 7, wherein the fastening member is a fastening screw that fastens the gantry and the transport carriage.   The fastening member includes a coupling member, a carriage side fastening screw that fastens the coupling member and the transport carriage, and a gantry side fastening screw that couples the coupling member and the gantry. Item 8. The container transport system according to Item 7. A fixing hole for fixing the mount to the floor surface is formed through the mount,
The fastening member includes a connecting member, a protrusion provided in the connecting member and inserted into the fixing hole, and a carriage side fastening screw that fastens the connecting member and the transport carriage. The container transport system according to claim 7. A stand installed on the floor and capable of mounting a radioactive substance storage container;
A levitation device that is inserted between the gantry and the floor and levitates the gantry with air;
A transport carriage that engages the gantry and moves the gantry levitated by the levitation device;
A method of positioning a transport carriage in a container transport system comprising a pair of positioning pins provided protruding from the floor and regulating the position of the transport carriage,
The transport carriage is formed on the front side in the traveling direction, and has a pair of pin accommodating portions that receive and engage the pair of positioning pins, respectively.
By moving the transport carriage forward in the traveling direction, receiving the pair of positioning pins in the pair of pin housing portions, and engaging the pair of pin housing portions and the pair of positioning pins, A method for positioning a transport carriage, wherein the position of the transport carriage is regulated with respect to the positioning pin.

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