JP2009090716A - Reversible container fastening device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To facilitate operation of fastening/unfastening on a reversible container fastening device on/from. <P>SOLUTION: A pedestal part 40 provided on a trailer body is provided with a cradle 53 turned around the center of a support shaft 50 to a using position engaged with an engagement hole of the trailer and a storage position inserted into the pedestal part 40. A lock shaft 54 turnably mounted on the pedestal part 53 is provided with an engagement head part 37. A handle shaft 58 vertically and turnably mounted on the pedestal part 40 is provided with a protrusion 57 meshed with a recess 56 of the lock shaft 54. When a handle 61 is operated in the state of meshing the lock shaft 54 and the handle shaft 58 with each other, the engagement head part 37 is turned to a fastening position for fastening the container and to an open position for unfastening. When the cradle 53 is turned to a storage position, the lock shaft 54 is separated from the handle shaft 58. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a reversible container fastening device which is provided in a container loading semi-trailer that is pulled by a tractor and is rotatable between a use position for engaging a container and a storage position for avoiding interference with the container.

  Since a load that can be transported by a large truck has a predetermined weight and a total length of the vehicle, a tractor-trailer coupled vehicle is often used to transport a load that is heavier or longer. As a connected vehicle of a tractor that is a towed vehicle and a trailer that is a towed vehicle, there are a full trailer in which a loading platform is provided on the towing vehicle and the towed vehicle, and a semi-trailer in which the loading platform is provided only on the towed vehicle. The semi-trailer, which is a towed vehicle, is not provided with a driving wheel, and a traveling wheel that follows is arranged at the rear end, and is provided at the rear end of the king pin provided at the front end and the tractor, which is a towing vehicle. The trailer is pulled by connecting the coupler.

  The container loaded on the trailer includes a small container having a length of 20 feet and a large container having a length of 40 feet. When a container is loaded on the trailer, the long side of the container is set in the traveling direction of the trailer. Load parallel to The container-loading semi-trailer includes a dedicated type for small containers, a dedicated type for large containers, and a dual-purpose type that can load both containers.

In order to fix the container to be loaded on the trailer, the trailer is provided with a lock shaft having an engaging head called a corner cone so as to be rotatable on the cradle. The cradle is inserted into engagement holes respectively formed at the four corners of the container so as to engage with the container, and the engagement head provided rotatably on the cradle is fastened to the container by a lock shaft. It is rotated between a fastening position to be engaged and an open position to release the fastening. The trailer is provided with a plurality of container fastening devices each having an engaging head and a cradle according to the type and loading position of the container to be loaded, and containers at positions corresponding to the four corners of the container to be loaded. The container is fixed to the trailer using a fastening device. At this time, the container fastening device at a position corresponding to the bottom surface of the container without corresponding to the four corners of the container to be loaded is a reversing type that enters the trailer body to avoid interference with the container. Such a reversible container fastening device is disclosed in, for example, Patent Document 1.
JP 2000-142205 A

  In the conventional reversible container fastening device, an operating handle is integrally attached to a lock shaft that is provided with an engagement head and is rotatably mounted on a cradle. In order to avoid interference with the container, When the engaging head is reversed to the storage position together with the cradle, the operation handle for rotating the engaging head together with the cradle is also reversed and moved together. For this reason, it is necessary to reduce the size of the operation handle so as not to obstruct the reversal movement, and there is a limit in increasing the size of the operation handle, and there is a problem that the operability is poor.

  For example, if the operation handle is provided so as to protrude from the side wall in the traveling direction of the trailer body as in the case of a non-reversible container fastening device, it becomes an obstacle during reverse movement. It is limited to a structure that does not protrude from the side wall. In this case, in order to operate the operation handle, it is necessary to insert a hand into the trailer body or operate by extending the hand below the trailer body, and it is difficult to visually check the operating state from the outside. Is complicated and operability is poor. Further, when the operating handle is reversed together with the engaging head, a spring member that applies a spring force to the operating handle in a direction to hold the engaging head in the fastening position or the open position cannot be attached. There is a risk that the joint between the head and the container is released. Therefore, conventionally, a ball is engaged with a V-groove provided in the lock shaft, and the structure of the lock shaft becomes complicated.

  The objective of this invention is improving the operativity of the fastening with respect to the container of a reversible-type container fastening apparatus, and fastening release operation.

  The reversible container fastening device according to the present invention is provided in a trailer body of a container loading semi-trailer that is driven by a tractor, and rotates between a use position that engages the container and a storage position that avoids interference with the container. A reversible container fastening device, which is provided on the trailer main body and has a pedestal portion having side walls before and after the traveling direction and having an opening formed on the upper surface, and is attached to the pedestal portion facing the traveling direction. A support pivoted about the support shaft between a use position protruding from the opening and engaging with an engagement hole formed in the container and a storage position entering the pedestal. An engaging head that is rotatably mounted on the base and the receiving base and rotates between a fastening position that enters the container and fastens the container and an open position that releases the fastening is provided at the tip. And a first meshing portion provided at a base end portion of the lock shaft when the pedestal is in the use position and is rotatably mounted on the pedestal portion. A handle shaft provided with a second meshing portion for releasing the meshing with the first meshing portion when the cradle is in the storage position, and attached to the handle shaft, A handle that is operated to rotate the engagement head to the fastening position and the release position via the handle shaft by an operator via a handle hole formed in a side wall; When the storage shaft is rotated, the lock shaft is separated from the handle shaft.

  The reversible container fastening device of the present invention is mounted between the handle shaft and the pedestal portion, and a spring in a direction for holding each position when the handle shaft is in the fastening position and the open position. A spring member for applying a force to the handle shaft is provided.

  The reversible container fastening device of the present invention is attached to the pedestal portion so as to be openable and closable, and abuts the cradle when the cradle is in the use position to hold the cradle in the use position. A cover for covering the cradle when the cradle is in the storage position is provided.

  According to the present invention, the first engagement portion is provided at the base end portion of the lock shaft having the engagement head portion provided at the distal end, and the second engagement portion is provided on the handle shaft to which the handle is attached. The cradle mounted rotatably is engaged with the first meshing portion and the second meshing portion under the use position, and when the cradle is in the storage position, the meshing is released and the lock shaft is Since the handle head is separated from the handle shaft, the engagement head for fastening the container to be loaded and the handle for operating the engagement and release of the engagement head to the container can be separated. Therefore, when the handle is mounted in the pedestal and the cradle is rotated to the storage position, the handle is stationary in the pedestal, and the handle is operated through the handle hole formed in the side wall of the pedestal. And the operation of fastening and releasing the container is facilitated.

  Also, by separating the handle from the lock shaft in the pedestal, a spring member is attached to the handle shaft that applies a spring force to the handle shaft in a direction to hold the position when the handle shaft is in the fastening position and the open position. Therefore, it is possible to reliably prevent the fastening between the engagement head and the container during the transportation of the container. Furthermore, since the cover that holds the cradle in the use position when the cradle is in the use position is made openable, the cradle can be easily held and released under the use position.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a side view of a container loading semi-trailer having an inversion type container fastening device according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 shows an entire small container. FIG. 4 is a perspective view showing a floor surface of a large container.

  The container-loading semi-trailer shown in FIG. 1 is pulled by a tractor and carries a container as a load. It is a dual-purpose type that can be loaded with either a small container 10a to 10c having a length of 20 feet or a large container 11 having a length of 40 feet. A plurality of trailer bodies 12 on which these containers are loaded extend in the traveling direction. Vertical beam members 13 and a plurality of cross beam members 14 which are connected to each other and extend in the horizontal direction. The front portion of the vertical beam member 13 forms a gooseneck portion 13a that protrudes upward and that protrudes to the side so that the vertical beam members 13 are narrowed.

  The upper surface of the trailer main body 12 is a container support surface 15 that supports a container to be loaded, excluding the first support surface 15a formed on the upper surface of the gooseneck portion 13a and the gooseneck portion 13a below the first support surface 15a. And a second support surface 15 b formed on the upper surface of the trailer body 12. As shown by a two-dot chain line in FIG. 1, when two small containers 10a and 10b that are empty or have a small storage load are loaded on the trailer, one on each of the first support surface 15a and the second support surface 15b. When one small container 10c is loaded or one large container 11 is loaded, each container is loaded on the second support surface 15b.

  A king pin 16 is provided on the lower surface of the front end portion of the trailer body 12 to be connected to a tractor that is a towing vehicle. The trailer is pulled by the tractor. The trailer is not provided with a drive wheel for traveling, and is driven by a traveling wheel 17 provided at the rear portion of the trailer body 12 by being pulled by a connected tractor.

  When the trailer is not connected to the tractor, the trailer body 12 is supported by the traveling wheel 17 provided at the rear portion of the trailer body 12 and the landing gear, that is, the support leg 18 provided at the rear end portion of the gooseneck portion 13a. The support leg 18 is attached to the outer side of the rear end portion of the gooseneck portion 13a of the vertical beam member 13, and is extendable in the vertical direction. When the trailer body 12 is supported, the support legs 18 are extended downward, and the base ends of the support legs 18 are brought into contact with the traveling ground 19 to support the trailer body 12 horizontally.

  Each of the containers to be loaded has a rectangular parallelepiped shape, and is loaded on the container support surface 15 with its long side parallel to the traveling direction of the trailer. As shown in FIG. 3, engagement holes 25 each having a long hole are formed at the four corners on the lower surface side of the upper and lower corner portions 26 of the small containers 10a to 10c. The floor surface 22 of the large container 11 has a floor structure provided with a load transmission surface 24 having a plurality of recesses 23 as shown in FIG. 4 in order to transmit the load of the container to the trailer body 12. Has the same floor structure. Engagement holes (not shown) each having a long hole are formed in the corners on the rear end side of the large container 11 as in the case of the small container, and the front side is an engagement opening forward as shown in FIG. A hole 25a is formed.

  In order to fasten a plurality of types of containers to the trailer main body 12 at predetermined positions, the trailer main body 12 is provided with a plurality of container fastening devices 29 to 34 as shown in FIGS. Each of the container fastening devices 29 to 34 is provided on the left and right as shown in FIG. 2, and an engagement head 37 that enters the container from the engagement hole 25 and fastens the container is provided. It has a fastener 35, and the engaging head 37 is rotatable between a fastening position and an open position for releasing the fastening. A pin 36 that engages with the engagement hole 25a of the large container 11 protrudes rearward in the traveling direction of the trailer on both side surfaces 14b of the cross beam member 14 at the distal end.

  When two small containers 10a and 10b are loaded on the trailer body 12, as shown in FIG. 1, the containers 10a and 10b are loaded while being shifted in the front-rear direction of the trailer body 12 and placed on the front side. The small container 10a is fastened by the container fastening devices 29 and 31, and the small container 10b disposed on the rear side is fastened by the container fastening devices 32 and 34. When the small container 10c is arranged and stacked at the center of the trailer body 12, the small container 10c is fastened by the container fastening devices 30 and 33. On the other hand, when the large container 11 is loaded on the trailer body 12, the front end is engaged with the pin 36 and the rear end is fastened by the container fastening device 34.

  The container fastening device 31 is provided on a bolster 38, and is a raised type that is movable between a position at which the small container 10a is supported by the bolster 38 and a position at which it is retracted from the second support surface 15b. . The container fastening device 29 always protrudes from the first support surface 15a, and the container fastening device 34 always protrudes from the second support surface 15b, and is fixed. On the other hand, the container fastening devices 30, 32, and 33 rotate freely between a use position that protrudes from the second support surface 15b and engages the container, and a storage position that avoids interference with a non-corresponding container. It is a formula. As described above, the trailer main body 12 of the container loading semi-trailer that is driven by the tractor is provided with a plurality of container fastening devices 29 to 34 according to the type of the loaded container and its loading position.

  FIG. 5 is a partially cutaway perspective view showing the reversible container fastening devices 30, 32, 33 according to one embodiment of the present invention, and FIG. 6 is an exploded view of the reversible container fastening devices 30, 32, 33. It is a perspective view.

  As shown in FIGS. 5 and 6, the reversible container fastening devices 30, 32, 33 have a pedestal portion 40 provided on the trailer body 12, and the pedestal portion 40 has a square cross section, It has a pair of side walls 41 arranged in parallel in the traveling direction, and a top wall 42 and a bottom wall arranged in parallel in the vertical direction. The pedestal portion 40 is formed integrally with the cross beam member 14 at both end portions 14 a using the cross beam member 14, but without using the cross beam member 14, a square cylindrical pedestal portion is formed on the trailer body 12. 40 may be attached. A blocking wall 43 is fixed to the outer end surface of the pedestal 40 and the end of the pedestal 40 is closed.

  A frame 45 is attached to an attachment hole 44 formed in the upper surface wall 42 of the pedestal portion 40, and the frame 45 extends downward from the top plate 46 and the top plate 46 covering the upper surface wall 42, and the traveling direction of the attachment hole 44. And a pair of side plates 47 that abut the front and rear frame edges. A rectangular opening 48 is formed in the top plate 46 at a position facing the mounting hole 44 of the upper surface wall 42, and the pedestal 40 is formed by the opening 48 formed on the upper surface of the pedestal 40 via the frame 45. It is open. The top surface of the top plate 46 is a container support surface 15 that supports a container loaded on the trailer body 12.

  7 is a central longitudinal sectional view of the reversible container fastening devices 30, 32, 33 under the use position, FIG. 8 is a plan view of FIG. 7, and FIG. 9 is a line 9-9 in FIG. 10 is a cross-sectional view taken along the line 10-10 in FIG. 7, and FIG. 11 is a central vertical cross-sectional view of the reversible container fastening devices 30, 32, 33 under the storage position. It is.

  As shown in FIG. 6, a support hole 49 is formed on the right side of the side plate 47 of the frame 45, and a support shaft 50 inserted into the support hole 49 is attached to a pair of side plates 47 in the front and rear direction of travel. Yes. A bearing block 51 is attached to the support shaft 50, and a receiving base 53 is attached to the bearing block 51 via a rectangular receiving plate 52 fixed to the bearing block 51. The cradle 53 has a shape corresponding to the engagement hole 25 of the container. The use position and the pedestal portion engage with the engagement hole 25 of the container that protrudes from the opening 48 around the support shaft 50 and is loaded. It rotates between the storage position which enters in 40. As shown in FIG. 7, under the use position, the upper surface 52a of the receiving plate 52 and the container support surface 15 formed on the upper surface of the top plate 46 of the frame 45 are positioned on the same plane, Projecting upward from the container support surface 15. On the other hand, as shown in FIG. 11, under the storage position, the upper surface 52 a of the receiving plate 52 faces downward and the receiving base 53 enters the pedestal portion 40. Although the cradle 53 is illustrated in such a manner that the upper surface 52a of the cradle 52 and the container support surface 15 are located on the same plane under the use position, if the cradle 53 protrudes from the container support surface 15. The upper surface 52 a of the receiving plate 52 may be positioned below the container support surface 15.

  A lock shaft 54 is rotatably attached to the cradle 53 so as to pass through the cradle 53, and an engagement head 37 called a corner cone provided at the tip of the lock shaft 54 enters a container in which the lock head 54 is loaded. Thus, the container rotates between a fastening position for fastening the container and an open position for releasing the fastening. As indicated by a two-dot chain line in FIG. 8, the longitudinal direction of the engagement head 37 is perpendicular to the longitudinal direction of the cradle 53 under the fastening position. On the other hand, as indicated by a solid line in FIG. 8, the longitudinal direction of the engaging head 37 is parallel to the longitudinal direction of the cradle 53 under the open position.

  A collar 55 is attached to the base end portion of the lock shaft 54, the base end portion of the lock shaft 54 protrudes from the collar 55, and a recess 56 extending in the radial direction of the lock shaft 54 is first engaged with the base end portion. It is formed as a part.

  A fastener 35 is formed by a cradle 53 fixed to the bearing block 51 via a receiving plate 52 and a lock shaft 54 provided with an engaging head 37. The fastener 35 is centered on the support shaft 50. It rotates between the use position and the storage position. As shown in FIG. 11, the fastener 35 enters the pedestal portion 40 and is positioned below the container support surface 15 so as not to interfere with the loaded container, and the recess 56 also supports the container. It is below the surface 15.

  A handle shaft 58 provided with a convex portion 57 as a second meshing portion so as to mesh with a concave portion 56 provided at the base end portion of the lock shaft 54 is moved vertically to the pedestal portion 40 via a handle mounting plate 59. It is mounted so that it can turn freely. As shown in FIG. 7, the handle shaft 58 is provided with a collar 58 a that faces the end surface of the lock shaft 54 when the convex portion 57 is engaged with the concave portion 56. When the fastener 35 is in the operating position, the handle shaft 58 is coaxial with the lock shaft 54 and the concave portion 56 and the convex portion 57 are engaged with each other. In addition, although the recessed part 56 is provided in the base end part of the lock shaft 54, and the convex part 57 is provided in the handle shaft 58, these are reversed and the base end part of the lock shaft 54 serves as a first meshing part. A convex portion may be provided and the handle shaft 58 may be provided with a concave portion as a second meshing portion.

  The right end of the side plate 47 of the frame 45 protrudes downward as shown in FIG. 6, and both ends of the handle mounting plate 59 are attached to the protruding portion 47a as shown in FIG. An attachment hole 59a into which the handle shaft 58 is inserted is formed in the center of the handle attachment plate 59, and a collar 60 is attached to the base end portion of the handle shaft 58 protruding downward from the handle attachment plate 59. The mounting plate 59 is rotatably mounted.

  A handle 61 extending in the radial direction is attached to the handle shaft 58 via the collar 60, and the rotation of the engaging head 37 is operated via the handle shaft 58 by operating the handle 61. The handle 61 is turned by the operator through a service hole, that is, a handle hole 62 formed in the side wall 41 on the rear side in the traveling direction of the pedestal portion 40, and as shown in FIG. The engaging head 37 is rotated to the open position by operating the handle 61, and the engaging head 37 is rotated to the fastening position by operating the handle 61 to the fastening position indicated by the two-dot chain line.

  When the fastener 35 is rotated to the use position, the concave portion 56 provided at the proximal end portion of the lock shaft 54 and the convex portion 57 provided at the distal end of the handle shaft 58 are engaged with each other. Is transmitted to the lock shaft 54 via the handle shaft 58. When the handle 61 is in the open position, the handle shaft 58 has a convex portion 57 of the handle shaft 58 connected to the handle 61 and a concave portion 56 of the lock shaft 54 that meshes with the convex portion 57 as shown by a solid line in FIG. The engaging head 37 is in an open position as shown in FIG. When the handle 61 is in the fastening position, the handle shaft 58 is in the fastening position in which the convex portion 57 and the concave portion 56 meshing with the convex portion 57 are parallel to the longitudinal direction, that is, the longitudinal direction of the cradle 53 as shown by the two-dot chain line in FIG. Thus, the engaging head 37 is in the fastening position as shown in FIG. On the other hand, when the fastener 35 is rotated together with the cradle 53 to the storage position, the concave portion 56 is separated from the convex portion 57, and the rotation operation of the handle 61 is not transmitted to the engaging head 37.

  The operation member 63 for operating the rotation of the engaging head 37 is constituted by the handle shaft 58, the collar 60, and the handle 61. As described above, the fastener 35 has a use position connected to the operation member 63. , And can be rotated to a storage position separated from the operation member 63. Accordingly, since the handle 61 is not attached to the fastener 35 as in the conventional reversible container fastening device, the handle 61 holds a fixed position even when the fastener 35 is rotated. A person can operate the handle 61 through a handle hole 62 formed in the side wall 41 of the pedestal 40. Thereby, it is not necessary to extend and operate in the pedestal portion 40 or below the pedestal portion 40 as in the prior art, and the operation of fastening and releasing the container is facilitated.

  As shown in FIG. 9, the collar 60 is provided with a protrusion 64 made of a round bar, and the protrusion 64 rotates about the axis of the handle shaft 58 by the rotation operation of the handle 61. A pair of stoppers 65 extending downward are attached to both sides of the handle attachment plate 59, and the protrusions 64 come into contact with the stoppers 65 by operation of the handle 61. When the handle 61 is in the open position, the protrusion 64 indicated by a dotted line in FIG. 9 abuts on the left stopper 65 in the drawing, and when the handle 61 is in the fastening position, the protrusion 64 is indicated by a two-dot chain line. As shown in FIG. Thus, the protrusion 64 contacts the stopper 65 under the open position and the fastening position, so that the operation of the handle 61 is restricted between the open position and the fastening position.

  The handle 61 is provided with a spring mounting plate 66 extending downward, and one end of a tension coil spring 67 as a spring member is locked to the tip of the spring mounting plate 66. As shown in FIG. 6, the other end of the tension coil spring 67 is locked to a spring mounting angle 68 mounted inside the pedestal portion 40, and is attached between the handle shaft 58 and the pedestal portion 40 via the handle 61. As shown in FIG. 10, the tension coil spring 67 that has been applied applies a spring force to the handle shaft 58 in a direction to hold the handle shaft 58 when the handle shaft 58 reaches the fastening position and the open position. As described above, since the tension coil spring 67 is provided to apply the spring force in the direction to hold the respective positions to the handle shaft 58 when the fastening position and the open position are reached, the fastener 35, the container, Can be reliably prevented from being released. Since the fastener 35 and the operation member 63 are separated from each other and the operation member 63 is fixed in the pedestal portion 40 as described above, the operation member 63 can be provided with a spring member. In this embodiment, the tension coil spring 67 as a spring member is attached to the handle 61, but it may be attached to the handle shaft 58 or the collar 60, for example.

  As shown in FIG. 6, a support hole 69 is formed in the side plate 47 of the frame 45, and a support shaft 70 inserted into the support hole 69 extends through the pair of side plates 47 in the traveling direction. . As shown in FIG. 5, the support shaft 70 passes through the bearing block 71, and a rectangular cover 72 is attached to the bearing block 71 so as to enter the opening 48. The cover 72 is centered on the support shaft 70. It is attached to the pedestal portion 40 through a support shaft 70 so as to be freely opened and closed. As shown in FIG. 7, when the cover 72 is closed, the upper surface 72a of the cover 72 and the container support surface 15 formed on the upper surface of the top plate 46 of the frame 45 are flush with each other. Although the upper surface 72a of the cover 72 and the container support surface 15 are illustrated on the same plane with the cover 72 closed, the upper surface 72a of the cover 72 is located below the container support surface 15. May be located.

  When the cover 72 is closed with the fastener 35 in the use position, the tip of the cover 72 is supported by an opening / closing stopper 73 attached to the bearing block 51 as shown in FIG. The fastener 35 is held in the use position by contacting the receiving base 53 via the receiving plate 52. Thus, the cover 72 has a function as a stopper for fixing the fastener 35 in the use position. On the other hand, when the fastener 35 is in the storage position, the receiving plate 52 contacts the stopper round bar 74 and is held in the storage position as shown in FIG. When the cover 72 is closed under this state, the fastener 35 is covered with the cover 72. The opening and closing operation of the cover 72 is performed manually by putting a finger on the operation hole 75 formed at the tip of the cover 72, and holding and releasing the holding base 53 at the use position by the opening and closing type cover 72. It can be done easily.

  12 to 16 are perspective views showing the operation of the reversible container fastening devices 30, 32 and 33.

  FIG. 12 shows the container fastening state in the reversible container fastening devices 30, 32 and 33. When the handle 35 is turned to the fastening position with the fastener 35 in the use position inserted into the engagement hole 25 of the container, the engagement head 37 is turned to the fastening position in the engagement hole 25 and the container is moved. Is fastened to the trailer body 12. At this time, the cover 72 is in the closed position and holds the fastener 35 in the use position.

  To release the container from the container fastening state of FIG. 12, the handle 61 is operated to the front through the handle hole 62 of the pedestal portion 40, and the handle 61 is rotated from the fastening position to the open position. When the fastener 35 is in the use position, the concave portion 56 of the lock shaft 54 and the convex portion 57 of the handle shaft 58 are engaged with each other, and the rotation operation of the handle 61 is engaged through the handle shaft 58 and the lock shaft 54. The engagement head 37 transmitted to the head 37 is rotated from the fastening position to the open position as shown in FIG. Thus, when the engagement head 37 is rotated to the open position, the container is released from being fastened, and the container can be unloaded from the trailer body 12. To fasten the loaded containers, the state shown in FIG. 13 is operated to the state shown in FIG.

  When a container that is not fastened by the reversible container fastening device is loaded, the fastener 35 is stored in the pedestal portion 40 by operating the fastener 35 from the use position of FIG. 13 to the storage position of FIG. In the state shown in FIG. 13, the fastener 35 is held in the use position by the cover 72. To release this holding, a finger is put on the operation hole 75 of the cover 72 and the cover 72 is opened as shown in FIG. Manipulate to position. By releasing the holding of the fastener 35 by the cover 72 in this way, the fastener 35 can be freely rotated between the use position and the storage position.

  When the fastener 35 is rotated to the storage position with the cover 72 opened, the fastener 35 enters the pedestal 40 as shown in FIG. Under this storage position, the fastener 35 is positioned below the container support surface 15 and does not interfere with the container loaded on the container support surface 15. Next, as shown in FIG. 16, when the cover 72 is moved to the closed position by putting a finger on the operation hole 75, the operation of rotating the fastener 35 from the use position to the storage position is completed. In the state of FIG. 16, the lower surface of the cover 72 contacts the proximal end surface of the lock shaft 54 to cover the fastener 35, and the upper surface 72 a of the cover 72 is located on the same plane of the container support surface 15 or below the container support surface 15. There is no interference with the container loaded on the support surface 15.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the invention. For example, the present invention is not limited to the combined type container loading semi-trailer that can load any of the small containers 10a to 10c and the large container 11. For example, the small container 10c or the large container 11 is loaded. For semi-trailers. Further, although the openable cover 72 is used as a stopper for holding the fastener 35 at the use position and the storage position, a detachable pin or the like for fixing the fastener 35 to the pedestal portion 40 may be used. Further, the storage position is not limited to the position rotated 180 ° from the use position with the support shaft 50 as the center, but in a range where the fastener 35 and the cover 72 are located on the same plane as the container support surface 15 or below it. Various changes are possible.

It is a side view of the semi-trailer for container loading which has an inversion type container fastening device which is one embodiment of the present invention. It is a top view of FIG. It is a perspective view which shows the whole small container. It is a perspective view which shows the shape of the floor surface of a large sized container. It is a partially cutaway perspective view showing an inversion type container fastening device according to an embodiment of the present invention. It is an exploded perspective view of an inversion type container fastening device. It is a center longitudinal cross-sectional view of the reversible-type container fastening device under a use position. FIG. 8 is a plan view of FIG. 7. It is sectional drawing which follows the 9-9 line of FIG. It is sectional drawing which follows the 10-10 line of FIG. It is a center longitudinal cross-sectional view of the reversible-type container fastening device under the accommodation position. It is a perspective view which shows operation | movement of an inversion type container fastening apparatus. It is a perspective view which shows operation | movement of an inversion type container fastening apparatus. It is a perspective view which shows operation | movement of an inversion type container fastening apparatus. It is a perspective view which shows operation | movement of an inversion type container fastening apparatus. It is a perspective view which shows operation | movement of an inversion type container fastening apparatus.

Explanation of symbols

10a to 10c Small container 11 Large container 12 Trailer body 13 Vertical beam member 14 Horizontal beam member 15 Container support surface 25 Engagement holes 30, 32, 33 Reversible container fastening device 35 Fastener 37 Engagement head 40 Base part 41 Side wall 45 Frame 46 Top plate 47 Side plate 53 Receiving base 54 Lock shaft 56 Recessed portion (first meshing portion)
57 Convex part (second meshing part)
58 Handle shaft 61 Handle 62 Handle hole 63 Operating member 67 Tension coil spring (spring member)
72 Cover 75 Operation hole

Claims (3)

A reversible container fastening device provided on a trailer body of a container-loading semi-trailer that is pulled by a tractor and is rotatable between a use position for engaging the container and a storage position for avoiding interference with the container. ,
A pedestal portion provided in the trailer body, having side walls before and after the running direction and having an opening on the upper surface;
Between a use position provided on a support shaft attached to the pedestal portion so as to face the running direction and projecting from the opening into an engagement hole formed in the container and a storage position entering the pedestal portion A cradle that rotates about the support shaft;
A lock shaft that is rotatably mounted on the cradle and has an engagement head that rotates between a fastening position that enters the container and fastens the container and an open position that releases the fastening. When,
The pedestal portion is pivotably mounted in the up-down direction, and meshes with a first meshing portion provided at a base end portion of the lock shaft when the cradle is in the use position, and the cradle A handle shaft provided with a second meshing portion for releasing the meshing with the first meshing portion when
The engaging head is pivoted to the fastening position and the opening position via the handle shaft by an operator via a handle hole formed on the side wall of the pedestal portion, attached to the handle shaft. A handle,
A reversible container fastening device, wherein the lock shaft is separated from the handle shaft when the cradle is rotated to the storage position.   2. The reversible container fastening device according to claim 1, wherein the reversible container fastening device is mounted between the handle shaft and the pedestal portion, and holds the respective positions when the handle shaft reaches the fastening position and the open position. A reversible container fastening device comprising a spring member for applying the spring force of the handle to the handle shaft.   3. The reversible container fastening device according to claim 1 or 2, wherein the reversible container fastening device is attached to the pedestal portion so as to be freely opened and closed, and abuts the cradle when the cradle is in the use position. A reversible container fastening device comprising a cover that is held in position and covers the cradle when the cradle is in the storage position.

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