JP4839089B2 - Container handling vehicle - Google Patents

Description

  The present invention relates to a container handling vehicle capable of loading and unloading a container between a body frame of a vehicle body and the ground.

As shown in FIGS. 17 and 18, the container 46 is conventionally known as a container handling vehicle capable of loading and unloading the container 50 between the body frame 45 of the vehicle body and the ground. Some have a cargo handling device having a cargo handling arm 47 that is fixed and pivots in the vehicle longitudinal direction (vertical direction). This cargo handling device loads and unloads the container 50 between the vehicle body frame 45 and the ground by rotating the cargo handling arm 47 with the hook 46 engaged with the engagement pin 49 on the front wall of the container 50. Can do.
A restriction member 48 is rotatably provided on the hook 46, and the restriction member 48 has a restriction position (FIG. 18B) that prevents the engagement pin 49 from being detached from the hook 46. The engagement pin 49 can be rotated by its own weight between the open position (FIG. 17B) where the engagement pin 49 can be engaged and disengaged from the hook 46. When the container 50 is loaded and unloaded from the ground, the restricting member 48 prevents the engagement pin 49 from being detached from the hook 46 (see, for example, Patent Document 1).

German Patent Invention No. 2903462

In the container handling vehicle as described above, the operation of loading the container 50 on the ground onto the vehicle body frame 45 is to turn the handling arm 47 upward after engaging the hook 46 with the engagement pin 49 of the container 50. Is done by. However, in the conventional cargo handling device, the vertical position of the opening of the hook 46 and the engagement pin 49 needs to be aligned by adjusting the position of the cargo handling arm 47 by the operator. There is a problem in that it is difficult to engage the two.
Therefore, from the state where the hook 46 is disposed at a position lower than the engaging pin 49 (the two-dot chain line in FIG. 17B), the cargo handling arm 47 is rotated upward (in the direction of the arrow) It is conceivable to engage the hook 46.
However, since the restricting member 48 is attached to the upper position (base end side) of the opening of the hook 46 as in the conventional hook 46, the operation of engaging the engaging pin 49 and the hook 46 is performed. If the cargo handling arm 47 is rotated upward as described above, the engaging pin 49 may be caught by the restricting member 48 and the two may not be engaged.

  Therefore, the present invention has been made in view of the above problems, and can prevent the container from falling off the hook of the cargo handling device during the loading and unloading operation of the container. It is an object of the present invention to provide a container handling vehicle capable of easily engaging.

In order to achieve the above object, a container handling vehicle according to the present invention includes a vehicle body frame on which a container having an engagement portion provided on a front wall is placed, and is rotatable in the vehicle longitudinal direction with respect to the vehicle body frame. A load handling arm and a hook that is fixed to the distal end side of the load handling arm and has a recess formed between the proximal end and the distal end to be engaged with the engagement portion. The hook allows the hook to approach the engaging portion from the base end side to engage the engaging portion with the concave portion, and engages the engaging portion with the concave portion. A loading / unloading device for loading / unloading the container between the vehicle body frame and the ground by rotating the loading / unloading arm in a state where the engagement portion is detached from the recess. Preventing regulation position and before The rotation of the handling arm between said engaging opening position and disengageably said engagement portion from said recess together does not inhibit access to the engagement portion from the proximal end of the time of engagement operation Accordingly, one end of the hook is provided so as to be rotatable by its own weight, and is fixed to the other end of the restricting member formed in a substantially arc shape in a side view, and the container unloading operation is performed in the middle of the container unloading operation. A stopper that holds the restricting member in the restricting position, and the restricting member opens in the same direction as the concave portion of the hook in the open position and in the restricted position. A recess that surrounds the engagement portion from the periphery together with the recess of the hook; the engagement portion of the container engages with the recess of the hook, and the regulating member leaves a part from the periphery of the engagement portion. Quasi-regulatory level In a state in, said regulating member, the other end is a direction rotated to the open position by its own weight is arranged such that the direction toward the front wall side of the container, the regulating member is the quasi When it is going to turn by its own weight from the state where it is in the restriction position , a restriction part that restricts the restriction member from turning in the direction of the open position by contacting the front wall side of the container is provided on the restriction member . It is provided.

According to this configuration, when the restricting member is in the restricting position, the engagement portion of the container can be prevented from being detached from the recess of the hook, and when the restricting member is in the open position, the engaging portion of the container is engaged from the recess. It becomes detachable, and the attaching / detaching operation between the hook and the engaging portion of the container becomes possible.
In addition, during the container loading / unloading operation, the restricting member at the restricting position can be held in that state by the stopper.
Furthermore, in the operation of engaging the hook and the engaging portion of the container in a state where the regulating member is in the open position, by turning the cargo handling arm upward after setting the hook to a position lower than the engaging portion, The hook can be brought close to the engaging portion from the base end side, and the engaging portion can be engaged with the recess. Further, when the restricting member is in the open position, the approach to the engaging portion from the base end side of the hook in the engaging operation is not hindered by the restricting member.
In addition, even when the container engaging portion pushes the restricting member to rotate the restricting member toward the open position during the container loading operation, the restricting portion can prevent this, and the container engaging portion It is possible to prevent detachment from the recess.

Further, the restriction portion includes a portion of the outer circumferential arc surface of the regulating member is opposed to said front wall of said regulating member in a state in which the quasi-restricting position serves as may Rukoto. According to this, a part of the restricting member can function as the restricting portion. Further, the structure can be simplified and the number of parts can be reduced.

Further, in this container handling vehicle, the stopper, the regulating member is hooked on the tip portion of the front Symbol hook state is in said open position Rutotomoni, the engagement of the recess in the hooked state It is preferable to adopt a configuration that is fixed to the other end portion of the restricting member so as to prevent the engagement portion from being detached by contacting the portion.
According to this, even if the engaging portion in the recess of the hook moves toward the tip end side of the hook and tries to separate from the recess, the engaging portion contacts the stopper that is hooked on the tip end portion of the hook. Thus, it is possible to prevent the detachment from the recess.

In addition, the container handling vehicle, the rotary contact to before the engaging portion of the container in the recess of the notated click is pressed to the engaging portion in engagement with rotating the regulating member to the restricting position side It is preferable that the surface is formed on the one end side of the recess of the restriction member so as to protrude into the recess of the hook.
According to this configuration, the restricting member can be turned to the restricting position side by pressing the turning contact surface against the engaging portion.

  According to the container handling vehicle arrangement of the present invention, when the restricting member is in the restricting position, the engagement portion of the container can be prevented from being detached from the hook, and the restricting member can be held in the restricting position by the stopper. Thereby, it can prevent that the engaging part of a container detaches | leaves from a hook. Further, during the engaging operation between the engaging portion and the hook, the restricting member does not interfere with the engaging operation at the open position, and the operation becomes easy.

Embodiments of the present invention will be described below with reference to the drawings.
Figure 1 is a side view showing a container handling vehicle both Reference Examples. 2, 3, 4 and 5 are side views showing the loading and unloading operations of the container 10 performed by this container handling vehicle. This container handling vehicle includes a body frame 2 of a vehicle body on which the container 10 is placed, and a cargo handling apparatus 1 that loads and unloads the container 10 between the vehicle body frame 2 and the ground. The cargo handling device 1 includes a linear dump arm 4 having a base end portion attached to the rear portion of the vehicle body frame 2 in the vehicle front-rear direction, and a cargo handling arm 3 attached to the tip end portion of the dump arm 4. Yes.

  The dump arm 4 is attached to the vehicle body frame 2 so as to be rotatable about a horizontal first axis C1 (in the vehicle width direction). The cargo handling arm 3 is attached to the tip end portion of the dump arm 4 so as to be rotatable about a horizontal second axis C2 (in the vehicle width direction). Furthermore, a securing means (not shown) is provided between the cargo handling arm 3 and the dump arm 4, and the securing means regulates the rotation between the cargo handling arm 3 and the dump arm 4, It can be freely turned or switched.

The cargo handling arm 3 includes a linear lift arm 21 attached to the dump arm 4 so as to be rotatable about the second axis C2 and a hook arm 22 provided so as to be movable forward and backward with respect to the lift arm 21. is doing.
One end of the first telescopic actuator 12 is rotatably attached to the middle part of the lift arm 21. The other end of the first telescopic actuator 12 is rotatably attached to the vehicle body side (vehicle body frame 2). As shown in FIGS. 2, 3, 4, and 5, the cargo handling arm 3 rotates with respect to the vehicle body frame 2 about the second axis C <b> 2 by the expansion / contraction operation of the first expansion / contraction actuator 12. Can do. Further, as shown in FIG. 6, due to the expansion / contraction operation of the first expansion / contraction actuator 12, the cargo handling arm 3 and the dump arm 4 united by the securing means may rotate about the first axis C <b> 1. it can. That is, the dump arm 4 and the cargo handling arm 3 are tilted upward together with the container 10.

  In the cargo handling arm 3, the hook arm 22 is erected substantially vertically from the forward / backward portion 22 a held by the lift arm 21 so as to be movable forward and backward (slidable) in the longitudinal direction of the lift arm 21 and from the tip of the forward / backward portion 22 a. It is formed in an L shape by the raised portion 22b. 1 and 2, a second telescopic actuator (not shown) is interposed between the advancing / retreating part 22a of the hook arm 22 and the lift arm 21, and the advancing / retreating part 22a is caused by the expansion / contraction operation of the second expansion / contraction actuator. Moves forward and backward with respect to the lift arm 21, whereby the hook arm 22 can extend and retract relative to the lift arm 21. And the hook 6 is being fixed to the front-end | tip part of the standing part 22b, and the hook 6 engages with the engaging part 11 provided in the front wall 10a of the container 10. FIG.

  According to the above configuration, in the state where the cargo handling arm 3 (lift arm 21) is rotatable with respect to the dump arm 4 in the securing means, the first telescopic actuator 12 is expanded and contracted, whereby FIG. As shown in FIGS. 3, 4, and 5, the cargo handling arm 3 rotates about the second axis C <b> 2 with respect to the vehicle body frame 2. Thereby, the cargo handling apparatus 1 can load and unload the container 10 engaged with the hook 6 attached to the cargo handling arm 3 between the vehicle body frame 2 and the ground.

  FIG. 7 is a view showing the hook 6 portion of the cargo handling device and the front portion of the container 10. In this figure, the engaging portion 11 of the container 10 is an engaging pin (lift bar) 11. A pair of arm portions 19 projecting forward is fixed to the front wall 10 a of the container 10, and the engagement pin 11 is fixed to the distal end side of the arm portion 19. The engagement pin 11 is provided away from the front wall 10a of the container 10 in the front-rear direction. Therefore, when the front end portion 9 of the hook 6 enters between the engagement pin 11 and the front wall 10a, the hook 6 and the engagement pin 11 are engaged.

The hook 6 ( reference example ) will be described.
In FIG. 7, the hook 6 is substantially U-shaped in a side view. The base end 7 side of the hook 6 is fixed to the tip of the standing portion 22 b of the hook arm 22. In order to engage the hook 6 with the engagement pin 11 of the container 10, a recess 8 is formed between the base end portion 7 and the tip end portion 9 of the hook 6. In the state where the hook arm 22 (the cargo handling arm 3) is rotated to the rear of the vehicle (the state shown in FIG. 7), as shown in FIG. 8A, the recess 8 opens toward the rear of the vehicle, that is, toward the container 10 side. In the state where the hook arm 22 is rotated forward (the state shown in FIG. 2), the recess 8 is opened toward the front of the vehicle as shown in FIG.

  FIG. 8A shows a state at the start of loading (lifting) operation of the container 10 on the ground or a state of unloading completion after the container 10 is lowered to the ground. FIG. 8D shows a state at the start of loading when the container 10 is placed on the vehicle body frame 2 or when the cargo handling arm 3 is rotated backward to lower the container 10 to the ground. FIG. 8B and FIG. 8C show the intermediate states of these operations.

  In FIG. 7, the base end portion 7 of the hook 6 is formed with a raised portion 26 that protrudes toward the distal end portion 9, and this raised portion 26 faces the inner surface of the distal end portion 9 of the hook 6. . As shown in FIG. 7, the surface (outer surface) 27 facing the rear side of the base end portion 7 of the hook 6 in a state where the hook arm 22 is rotated rearward is a protrusion formed by another member or the hook 6 itself. The outer surface 27 is continuous with the raised portion 26. Further, the outer surface 27 is a surface that is straight (or slightly curved) toward the tip end 9 side (recess 8) of the hook 6, and an extension line of the outer surface 27 is an inner surface of the tip 9 (the surface of the recess 8). ). In other words, the tip 9 protrudes beyond the surface obtained by extending the outer surface 27.

  According to the cargo handling apparatus 1 of the present invention, the hook 6 is moved from the base end 7 side to the engagement pin 11 by rotating the hook arm 22 (the cargo handling arm 3) positioned rearward of the vehicle upward. An engagement operation is possible in which the engagement pin 11 is engaged with the recess 8 of the hook 6 by approaching. That is, in order to perform the operation of engaging the engagement pin 11 of the container 10 with the hook 6, the position of the recess 8 of the hook 6 is set lower than the engagement pin 11, and the vehicle C is moved backward to move the cargo handling arm 3 upward. Turn to. Thereby, the engaging pin 11 can be guided to the recess 8 along the outer surface 27 in a state where the engaging pin 11 is in contact with the outer surface 27 of the hook 6. As a result, the outer surface 27 on the base end 7 side of the hook 6 becomes a guide surface portion 15 that guides the engaging pin 11 to the recess 8.

  In addition, a guide member 29 is attached to a surface (rear surface) 28 facing the vehicle rear side (container 10 side) of the tip end portion of the hook arm 22 in the state of FIG. The guide surface 29 a of the guide member 29 facing the container 10 constitutes a substantially continuous smooth surface with the outer surface 27 of the hook 6. As a result, during the operation of engaging the engagement pin 11 of the container 10 with the hook 6, the guide surface portion 15 along the guide surface 29a in a state where the engagement pin 11 is in contact with the guide surface 29a. Can be guided to. Thereby, the guide surface 29 a of the guide member 29 becomes a surface that guides the engaging pin 11 to the guide surface portion 15 and further to the recess portion 8.

In addition, a restriction member 16 is rotatably provided at the tip 9 of the hook 6. FIG. 9 is a view of the hook 6 and the regulating member 16 in the state of FIG. 8D as viewed from the container 10 side. The restricting member 16 has a pair of plate members 30 that sandwich the hook 6 from both the left and right sides, and a pin 31 passes through the plate member 30 and the tip 9 of the hook 6. As a result, the plate member 30 is rotatable about the axis of the pin 31. The stopper 17 is fixed to the pair of plate members 30 so as to straddle the outer surface of the hook 6. The stopper 17 is a plate member and can come into contact with the outer surface of the hook 6.
As a result, as shown in FIG. 8, the regulating member 16 is suspended from the hook 6 by its own weight and rotates relative to the hook 6 according to the posture of the hook 6. Alternatively, when the stopper 17 is in contact with the outer surface of the hook 6, the restricting member 16 can be relatively held with respect to the hook 6.
Further, in FIGS. 7 and 8, the regulating member 16 has a claw portion 16 a that protrudes into the recess 8 of the hook 6 or can be retracted out of the recess 8 at the end on the pin 31 side. The stopper 17 is fixed to the end opposite to the pin 31 side.

  The rotation of the restriction member 16 will be described. When the cargo handling arm 3 is rotated rearward of the vehicle, as shown in FIG. 8A, the regulating member 16 is suspended from the tip 9 of the hook 6 by its own weight. In this state, the claw portion 16a of the restricting member 16 is retracted to the outside of the recess 8 of the hook 6 (open position), and the engagement pin 11 is disengaged from the recess 8 by opening the opening of the recess 8. Be free. This open position is a position where the approach to the engagement pin 11 from the base end 7 side of the hook 6 is not hindered by the regulating member 16 during the engagement operation of the engagement pin 11 of the container 10 and the hook 6 ( It will be an unobstructed position). More specifically, the guide pin 15 is positioned at a position where the guide member 15 is not hindered by the restricting member 16.

  When the cargo handling arm 3 is rotated upward from this state and is in the middle of the unloading operation (see FIG. 4), as shown in FIGS. However, the restricting member 16 remains suspended from the tip 9 of the hook 6 by its own weight. In the state during the loading / unloading operation, the claw portion 16a of the restricting member 16 is in a position protruding into the recess 8 (semi-regulatory position), and the claw portion 16a partially opens the opening of the recess 8 on the tip portion 9 side. By closing the cover, the restricting member 16 can prevent the engagement pin 11 in the recess 8 from being detached from the recess 8.

  8B and 8C, the engaging pin 11 presses the claw 16a of the restricting member 16 to rotate the restricting member 16 to the open position side (counterclockwise direction). When the stopper 17 contacts the front wall 10a of the container 10, the restricting member 16 is restricted from rotating in the direction of the open position. That is, the stopper 17 functions as a restricting portion 18 that restricts the restricting member 16 from rotating in the direction of the open position, and the restricting portion 18 also serves as the stopper 17. Thereby, it is possible to prevent the engaging pin 11 from being detached from the recess 8 of the hook 6 during the loading operation of the container 10. Furthermore, since the stopper 17 is used as the limiting portion 18 instead of a separate member, the structure can be simplified and the number of parts can be reduced.

Further, when the cargo handling arm 3 is further rotated forward of the vehicle, as shown in FIG. 8D, the stopper 17 and the hook 6 come into contact with each other, and the stopper 17 and the restricting member fixed thereto. 16 is lifted by the hook 6. In this state, the claw portion 16a of the restricting member 16 is in the position that protrudes most into the recess 8 of the hook 6 (regulatory position), and the claw portion 16a closes the opening of the recess 8 so that the restricting member 16 is in the recess 8 It is possible to prevent the engaging pin 11 inside from being detached from the recess 8. Thus, in the middle of the loading / unloading operation of the container 10 and the state in which the container 10 is loaded, the restriction member 16 is held on the restriction position side by the stopper 17.
As described above, the restricting member 16 is provided at the distal end portion 9 of the hook 6 so as to be rotatable between the restricting position and the open position.

In this reference example is described unloading operation of the container 10 by container handling vehicles.
First, the operation of lowering the container 10 to the ground will be described.
1, the second telescopic actuator (not shown) interposed between the advancing / retreating portion 22a of the hook arm 22 and the lift arm 21 shortens the hook arm 22 together with the container 10 in the rear of the vehicle. Move horizontally (FIG. 2). At this time, the container 10 moves to the vehicle rear side while the rear end bottom portion of the container 10 is supported by the support roller 32 provided at the rear end portion of the vehicle body frame 2.

  When the first telescopic actuator 12 is extended from the state of FIG. 2, the lift arm 21 and the hook arm 22 are integrally rotated around the second axis C2 (FIGS. 3 and 4). As shown in FIGS. 1 and 2, after the hook arm 22 is moved rearward by the second telescopic actuator, the cargo handling arm 3 is rotated around the second axis C2 to thereby change the second axis C2. The turning radius at the center hook 6 (engagement pin 11) is reduced. Thereby, the height of the turning locus of the hook 6 can be kept low.

  By this rotation, the hook 6 is moved so as to lift the container 10 in a state where the hook 6 fixed to the tip of the hook arm 22 is engaged with the engagement pin 11 of the container 10. At this time, the container 10 tilts with the support roller 32 as a fulcrum (FIG. 3), but the container 10 is eventually separated from the support roller 32 and the roller 33 provided at the bottom end of the container 10 contacts the ground. (FIG. 4).

  In the state (operation) from FIG. 1 to FIG. 4, as shown in FIGS. 8D, 8 </ b> C, and 8 </ b> D, the regulating member 16 is on the regulating position side (the semi-regulating position or the The rotation of the restricting member 16 is restricted within the range on the restricting position side. More specifically, the stopper 17 abuts against the front wall 10a of the container 10 to prevent the restricting member 16 from rotating in the opening position (counterclockwise direction). In the reverse direction, the stopper 17 abuts against the hook 6 to prevent the restricting member 16 from rotating further (turning clockwise) than the restricting position.

  In particular, in FIG. 3, the rear end portion (roller 33) of the container 10 is not in contact with the ground and the bottom surface thereof is supported by the guide roller 32, and the center of gravity of the container 10 is more vehicle than the guide roller 32. When it is on the rear side (when the lift arm 21 is approximately 45 ° with respect to the horizontal), the container 10 tends to fall in a direction in which the front wall 10a side rotates upward with the guide roller 32 as a fulcrum. As a result, the engagement pin 11 of the container 10 moves in the direction (upward) in which the engagement pin 11 is about to be detached from the inside of the recess 8 of the hook 6 through the tip 9 side. However, even in this case, as described above, in the state of FIG. 3, the restricting member 16 is kept on the restricting position side. Therefore, even if the engaging pin 11 that is going to move upward pushes the claw portion 16a of the restricting member 16, the restricting member 16 is kept at the restricting position, and the engagement between the two is released, and the container 10 is hooked. Can be prevented from falling off.

  Further, as shown in FIG. 4, the lift arm 21 and the hook arm 22 are rotated to a predetermined rotation position at the rear of the vehicle, so that the roller 33 of the container 10 is in contact with the ground. And the container 10 moves to the vehicle rear along the ground by the further rearward rotation of both arms 21 and 22. However, if the ground is an upwardly inclined surface (inclined surface) toward the rear of the vehicle, the container 10 becomes difficult to move to the rear of the vehicle. The pin 11 is about to come off the hook 6. However, since the restricting member 16 is restricted in its rotation as described above and is held at the restricting position or the semi-regulating position, the engaging pin 11 can be detached from the hook 6 by the claw portion 16a of the restricting member 16. Absent.

  In the state where the lift arm 21 and the hook arm 22 are in the predetermined rotation position, the stopper 17 can be separated from the hook 6 and the restricting member 16 can be suspended by its own weight with the stopper 17. It is configured. That is, at this predetermined rotation position, the restriction member 16 shifts from a restriction position where the restriction member 16 rotates integrally with the hook 6 to a semi-regulation position where the restriction member 16 is suspended from the hook 6. That is, since the restricting member 16 is in the restricting position until the predetermined rotation position where the roller 33 of the container 10 contacts the ground, the container 10 rotates upward on the front wall 10a side with the guide roller 32 as a fulcrum as described above. By trying to fall in the direction, it is possible to reliably prevent the engaging pin 11 from being detached from the hook 6.

  Further, when the ground behind the vehicle is a downwardly inclined surface (inclined surface) toward the rear, when the roller 33 of the container 10 comes into contact with the ground, a force to move backward is applied to the container 10 due to the gradient. As a result, as shown in FIGS. 10A and 10B, the engaging pin 11 moves toward the tip portion 9 side of the hook 6, and further gets over the tip portion 9 and comes off the hook 6. However, even in this case, since the stopper 17 can hold the restricting member 16 in the restricting position, the engaging pin 11 is detached from the recess 8 by engaging with the claw portion 16a of the restricting member 16. There is no.

  4 to 5, the container 10 can be lowered to the ground by further rotating the lift arm 21 and the hook arm 22 downward (rear of the vehicle). In this state, as shown in FIG. 8A, the restriction on the rotation of the restriction member 16 in the direction of the open position due to the contact between the stopper 17 and the front wall 10a of the container 10 is released. The regulating member 16 is automatically switched from the semi-regulated position to the open position by its own weight. Thereby, the opening part of the recessed part 8 of the hook 6 will be in the state open | released by the container 10 side, and the container 10 can leave | separate from the hook 6 by advancing a vehicle.

Next, the loading operation of the container 10 will be described.
As shown in FIGS. 5 and 8 (a), the lift arm 21 and the hook arm 22 are set to the rearward rotation position so that the opening of the recess 8 of the hook 6 faces the container 10 side. At this time, as shown in FIG. 7, the height position of the opening of the recess 8 of the hook 6 is set to a position lower than the engagement pin 11 of the container 10. Then, the vehicle is moved backward until the engagement pin 11 comes into contact with the guide surface 29 a (or the outer surface 27 of the hook 6) of the guide member 29 provided on the hook arm 22.

In this state, when the lift arm 21 and the hook arm 22 are rotated upward, the hook 6 moves upward. Thereby, the hook 6 approaches the engaging pin 11 from the base end 7 side, and the engaging pin 11 can be engaged with the concave portion 8 of the hook 6. During this operation, the engaging pin 11 is guided to the concave portion 8 of the hook 6 along the guide surface 29a and the guide surface portion 15, and moves into the concave portion 8 (broken line in FIG. 7). At this time, the regulating member 16 in the open position is suspended by its own weight from the distal end portion 9 of the hook 6 that is positioned below the guiding surface portion 15, so that the engaging pin 11 is guided by the regulating member 16. It is not obstructed (does not get in the way).
Thereby, the engaging pin 11 of the container 10 and the hook 6 are engaged.

  5 to 4 and 3, when the lift arm 21 and the hook arm 22 are rotated upward (forward), the hook 6 causes the container 10 to move with the roller 33 of the container 10 as a fulcrum. Lift and pull in the direction of the body frame 2. At this time, as shown in FIGS. 8 (b) and 8 (c), the regulating member 16 automatically becomes the semi-regulating position due to the change in the posture of the hook 6, and the stopper 17 comes into contact with the front wall 10 a of the container 10. Thus, the regulating member 16 is held in that position. In this state, the rotation of the restricting member 16 is restricted within the range between the semi-restricted position and the restricted position.

  Specifically, in FIGS. 8B and 8C, even when the engaging pin 11 presses the claw portion 16 a of the regulating member 16, the stopper 17 comes into contact with the front wall 10 a of the container 10. The restricting member 16 is prevented from turning in the opening position (counterclockwise direction). In the reverse direction, the stopper 17 abuts against the hook 6 to prevent the restricting member 16 from rotating further (turning clockwise) than the restricting position. Thereby, the regulating member 16 is kept in the semi-regulated position or the regulated position, and it is possible to prevent the container 10 from falling off the hook 6 due to the disengagement.

  And the container 10 can be made to land on the vehicle body frame 2 by rotating the lift arm 21 and the hook arm 22 further forward from the state of FIG. 3 (FIG. 2). Thereafter, when the second telescopic actuator (not shown) extends, the hook arm 22 moves horizontally with the container 10 forward of the vehicle (FIG. 1). In the state of FIG. 2 and FIG. 1, as shown in FIG. 8D, the restricting member 16 exists in the restricting position and prevents the engagement pin 11 of the container 10 from being detached from the hook 6. . Thereby, the vehicle can travel safely with the container 10 mounted.

FIG. 11 is a view showing a first embodiment of the present invention, and shows a hook 6 portion of the cargo handling device and a front portion of the container 10. In this figure, the engaging portion 11 of the container 10 is an engaging pin (lift bar) 11. A pair of arm portions 19 projecting forward is fixed to the front wall 10 a of the container 10, and the engagement pin 11 is fixed to the distal end side of the arm portion 19. The engagement pin 11 is provided away from the front wall 10a of the container 10 in the front-rear direction. Therefore, when the front end portion 9 of the hook 6 enters between the engagement pin 11 and the front wall 10a, the hook 6 and the engagement pin 11 are engaged. The container handling vehicle of this embodiment is the same as that shown in the reference example in the overall configuration, but is different in the hook 6 portion.

The hook 6 ( first embodiment) will be described.
In FIG. 11, the hook 6 is substantially U-shaped in a side view. The base end 7 side of the hook 6 is fixed to the tip of the standing portion 22 b of the hook arm 22. In order to engage the hook 6 with the engagement pin 11 of the container 10, a recess 8 is formed between the base end portion 7 and the tip end portion 9 of the hook 6. In a state where the hook arm 22 (the cargo handling arm 3) is rotated rearward of the vehicle (the state shown in FIG. 11), as shown in FIGS. 12 (e) and 13 (f), the recess 8 is located at the rear of the vehicle, that is, the container 10 When the hook arm 22 is rotated forward (the state shown in FIG. 2), the concave portion 8 of the hook 6 is formed as shown in FIGS. 12 (a) and 13 (j). It will be in the state opened toward the vehicle front.

  FIG. 12 is a diagram for explaining the lowering operation of the container 10, and FIG. 13 is a diagram for explaining the loading operation of the container 10. FIG. 12A shows a state at the start of the operation of lowering the container 10 to the ground by rotating the cargo handling arm 3 backward, and FIG. 12E shows the state of completion of unloading when the container 10 is lowered to the ground. Show. FIG. 13F shows a state at the start of the loading (lifting) operation of the container 10 on the ground. FIG. 13 (j) shows a state where loading is completed with the container 10 placed on the vehicle body frame 2. 12 (b), (c), (d) and FIGS. 13 (g), (h), and (i) show intermediate states of these operations.

  In FIG. 11, the base end portion 7 of the hook 6 is formed with a raised portion 26 that is raised toward the distal end portion 9, and this raised portion 26 faces the inner side surface of the distal end portion 9 of the hook 6. . As shown in FIG. 11, the surface (outer surface) 27 facing the rear side of the base end portion 7 of the hook 6 in a state where the lift arm 22 is rotated rearward is a protrusion formed by another member or the hook 6 itself. The outer surface 27 is continuous with the raised portion 26. Further, the outer surface 27 is a surface that is straight (or slightly curved) toward the tip end 9 side (recess 8) of the hook 6, and an extension line of the outer surface 27 is an inner surface of the tip 9 (the surface of the recess 8). ). In other words, the tip 9 protrudes beyond the surface obtained by extending the outer surface 27.

  According to the cargo handling apparatus 1 of the present invention, the hook 6 is moved from the base end 7 side to the engagement pin 11 by rotating the hook arm 22 (the cargo handling arm 3) positioned rearward of the vehicle upward. An engagement operation is possible in which the engagement pin 11 is engaged with the recess 8 of the hook 6 by approaching. That is, in order to perform the operation of engaging the engagement pin 11 of the container 10 with the hook 6, the position of the recess 8 of the hook 6 is set lower than the engagement pin 11, and the vehicle C is moved backward to move the cargo handling arm 3 upward. Turn to. Thereby, the engaging pin 11 can be guided to the recess 8 along the outer surface 27 in a state where the engaging pin 11 is in contact with the outer surface 27 of the hook 6. As a result, the outer surface 27 on the base end 7 side of the hook 6 becomes a guide surface portion 15 that guides the engaging pin 11 to the recess 8.

  In addition, a guide member 29 is attached to a surface (rear surface) 28 facing the vehicle rear side (container 10 side) in the tip end portion of the hook arm 22 in the state of FIG. The guide surface 29 a of the guide member 29 facing the container 10 constitutes a substantially continuous smooth surface with the outer surface 27 of the hook 6. As a result, during the operation of engaging the engagement pin 11 of the container 10 with the hook 6, the guide surface portion 15 along the guide surface 29a in a state where the engagement pin 11 is in contact with the guide surface 29a. Can be guided to. Thereby, the guide surface 29 a of the guide member 29 becomes a surface that guides the engaging pin 11 to the guide surface portion 15 and further to the recess portion 8.

  Further, a regulating member 16 is rotatably provided at a position closer to the distal end portion 9 than the proximal end portion 8 in the hook 6. The regulating member 16 has a substantially arc shape when viewed from the side, and a recess 36 having an arc surface is formed inside thereof. 11 has a pair of plate members 30 that sandwich the hook 6 from both the left and right sides, as shown in FIG. 9, and one end portion 40 of these plate members 30 (regulation member 16) and the hooks. The pin 31 penetrates through the intermediate portion 14 of 6. The intermediate portion 14 is a portion between the proximal end portion 7 and the distal end portion 9 of the hook 6. As a result, the plate member 30 is rotatable about the axis of the pin 31.

Moreover, the stopper 17 is being fixed to the other end part 41 of a pair of board member 30 (regulation member 16) so that the hook 6 may be straddled in a plate | board thickness direction. The stopper 17 is a cylindrical bar member. Then, depending on the rotation position of the regulating member 16, the stopper 17 is brought into contact with and engaged with a distal end recess 43 formed at the distal end of the hook 6 (see FIG. 12E), or the proximal end portion 7 ( Or the raised portion 26) (see FIG. 12A).
As described above, according to the posture of the hook 6, as shown in FIGS. 12 (e) and 13 (f), the regulating member 16 includes the pin 31 at one end 40 and the tip recess 43 of the hook 6. The hook 17 is suspended by its own weight at two points by the stopper 17 hooked on the hook. In this state, the restricting member 6 is held in a position relative to the hook 6. Further, the restricting member 16 can be rotated relative to the hook 6 in a direction in which the stopper 17 is separated from the tip recess 43.

  The rotation of the restriction member 16 will be described. In the state where the cargo handling arm 3 is rotated rearward of the vehicle, as shown in FIGS. 12 (e) and 13 (f), the restricting member 16 is separated by the tip portion 9 and the intermediate portion 14 of the hook 6 by its own weight. It will be in the state hung at the point. In this state, the restricting member 16 is retracted from the opening of the recess 8 of the hook 6 (open position), and the opening of the recess 8 is opened, so that the engaging pin 11 can be engaged and disengaged from the recess 8. Become. Note that, in this open position, when the engaging pin 11 of the container 10 engages with the hook 6, the restriction member 16 does not hinder the approach to the engaging pin 11 from the base end 7 side of the hook 6. It becomes a position (a position that does not get in the way). More specifically, it is a position where the guiding of the engaging pin 11 by the guiding surface portion 15 is not hindered by the restricting member 16. That is, during the engaging operation, the stopper 17 is hooked on the tip 9 (tip recess 43) of the hook 6 that is positioned below the guide surface portion 15, and the regulating member 16 is moved by the pin 31 to the intermediate portion of the hook 6. 14, the restriction member 16 is suspended from the hook 6 and is positioned below the recess 8, and the guide of the engagement pin 11 is not hindered by the restriction member 16. .

  Further, as shown in FIG. 11, the stopper 17 is positioned at the tip end portion 9 of the hook 6 while the regulating member 16 is in the open position, and is hooked on the tip recess portion 43. The stopper 17 can prevent the engagement pin 11 from being detached by coming into contact with the engagement pin 11 present in the recess 8. Specifically, since the upper surface of the stopper 17 hooked by the tip recess 43 is in a position protruding upward from the lowest surface of the recess 8 of the hook 6 in the state of FIG. Even if the engaging pin 11 located at the position moves toward the tip end 9 side of the hook 6 and tries to be detached from the recessed portion 8, the engaging pin 11 comes out of the recessed portion 8 by contacting the stopper 17. Can be prevented. In particular, when the operation of lifting the container 10 is started from the state shown in FIG.

Further, as shown in FIG. 11, a rotation contact surface 25 that allows the restriction member 16 to contact the engagement pin 11 at a predetermined rotation position is formed on the arc surface of the recess 36 of the restriction member 16. Has been. As shown in FIGS. 13G and 13H, the rotation contact surface 25 can be pressed by the engagement pin 11 to rotate the restriction member 16 to the restriction position side (counterclockwise direction). It is formed as follows.
More specifically, the restricting member 16 has a protruding portion 24 that can protrude into the recessed portion 8 of the hook 6 in a state where the restricting member 16 is in the opening position side rotation position (FIG. 13 (f)). It is on the inner peripheral surface side. The protruding portion 24 is formed on the one end 40 side of the restricting member 16, and as shown in FIG. 13 (f), the protruding portion 24 may inhibit the guiding of the engaging pin 11 by the guiding surface portion 15. It is formed so as to protrude to a position where it does not exist. The rotational contact surface 25 is formed on a surface from the inner surface of the protruding portion 24 toward the other end portion 41 side of the restricting member 16.

  And in the state (refer FIG. 4) in the middle of the loading operation | movement which rotated the cargo handling arm 3 upward from the state of FIG.13 (f), as shown from FIG.13 (g) to (h), The tip 9 of the hook 6 is located between the front wall 10a of the container 10 and the engaging pin 11, and the posture of the hook 6 is such that the opening of the recess 8 faces upward. As described above, the posture of the hook 6 is changed by the rotation of the cargo handling arm 3, but the engaging pin 11 is engaged with a downward force in the concave portion 8 of the hook 6 due to its own weight. The pin 11 slides in the recess 8 so as to be positioned on the bottom surface of the recess 8 of the hook 6. The engaging pin 11 comes into contact with the protruding portion 24 side (the protruding tip of the protruding portion 24) of the rotating contact surface 25 of the regulating member 16, and the rotating contact surface 25 is pressed by the engaging pin 11. . Thereby, the stopper 17 of the regulating member 16 that is hooked on the tip recess 43 of the hook 6 is separated from the tip recess 43, and the regulation member 16 is automatically rotated to the regulation position side (counterclockwise direction) The outer circumferential arc surface 38 of the regulating member 16 does not come into contact with the front wall 10a of the container 10, and the regulating member 16 is lifted upward (upright state). Thereby, the engagement pin 11 is substantially surrounded from the periphery by the recess 36 of the restricting member 16 and the recess 8 of the hook 6 (see FIG. 13H).

  Thus, in the state during the loading operation, the concave portion 36 of the restricting member 16 and the concave portion 8 of the hook 6 surround the engagement pin 11 from the periphery, that is, from the periphery, leaving a part. When the restricting member 16 closes the opening of the recess 8, the restricting member 16 can prevent the engagement pin 11 in the recess 8 from being detached from the recess 8. This semi-regulatory position is a position until the stopper 17 is separated from the tip recess 43 of the hook 6 and the stopper 17 comes into contact with the base end portion 7 of the hook 6.

  13 (g) and 13 (h), the engaging pin 11 is separated from the bottom surface of the recess 8 of the hook 6, and the recess 36 of the restricting member 16 is pushed to move the restricting member 16 to the open position side (clockwise). Even if the control member 16 is to be rotated in the direction), the part of the outer peripheral arc surface 38 of the restricting member 16 abuts against the front wall 10a of the container 10 to restrict the restricting member 16 from rotating in the open position direction. The That is, the outer peripheral circular arc surface 38 of the restricting member 16 serves as a restricting portion 18 that restricts the restricting member 16 from rotating in the direction of the open position. Thereby, it is possible to prevent the engagement pin 11 from being detached from the recess 8 of the hook 6. Furthermore, the structure is simplified and the number of parts can be reduced by using the outer peripheral circular arc surface of the restricting member 16 as a limiting portion instead of a separate member.

When the cargo handling arm 3 is further rotated forward of the vehicle, the center of gravity position (the center of gravity position including the stopper 17) of the restricting member 16 is pinned as shown in FIGS. By shifting from the vehicle rear side to the front side rather than 31, the restricting member 16 is automatically rotated by its own weight in the direction in which the stopper 17 moves toward the base end 7 side of the hook 6, and the stopper 17 is moved to the hook 6. It will be in the state contact | abutted to the base end part 7. FIG. In this state, the restricting member 16 is in a position (restricted position) in which the engaging pin 11 is completely surrounded in the circumferential direction by the recessed portion 36 of the restricting member 16 and the recessed portion 8 of the hook 6. By closing the opening, the regulating member 16 can prevent the engagement pin 11 in the recess 8 from being detached from the recess 8.
As described above, the restriction member 16 is provided on the hook 6 so as to be rotatable between the restriction position and the open position.

The loading / unloading operation of the container 10 by the container handling vehicle of the present invention in the first embodiment will be described.
First, the operation of lowering the container 10 to the ground will be described.
1, the second telescopic actuator (not shown) interposed between the advancing / retreating portion 22a of the hook arm 22 and the lift arm 21 shortens the hook arm 22 together with the container 10 in the rear of the vehicle. Move horizontally (FIG. 2). At this time, the container 10 moves to the vehicle rear side while the rear end bottom portion of the container 10 is supported by the support roller 32 provided at the rear end portion of the vehicle body frame 2.

  When the first telescopic actuator 12 is extended from the state of FIG. 2, the lift arm 21 and the hook arm 22 are integrally rotated around the second axis C2 (FIGS. 3 and 4). As shown in FIGS. 1 to 2, the hook arm 22 is moved rearward of the vehicle by a second telescopic actuator (not shown), and then the cargo handling arm 3 is rotated around the second axis C2, thereby The turning radius at the hook 6 (engagement pin 11) about the biaxial line C2 is reduced. Thereby, the height of the turning locus of the hook 6 can be kept low.

  By this rotation, the hook 6 is moved so as to lift the container 10 in a state where the hook 6 fixed to the tip of the hook arm 22 is engaged with the engagement pin 11 of the container 10. At this time, the container 10 tilts with the support roller 32 as a fulcrum (FIG. 3), but the container 10 is eventually separated from the support roller 32 and the roller 33 provided at the bottom end of the container 10 contacts the ground. (FIG. 4).

  In the state (operation) from FIG. 1 to FIG. 4, as shown in FIGS. 12A and 12B, the restricting member 16 is in the restricting position, and the turning of the restricting member 16 is further performed in this state. Restricted within the range of restricted or semi-restricted positions. More specifically, a part of the outer circumferential arc surface 38 of the restricting member 16 (the restricting portion 18) comes into contact with the front wall 10a of the container 10 so that the restricting member 16 is in the opening position (clockwise direction). Is prevented from rotating. In the reverse direction, the stopper 17 abuts against the base end portion 7 of the hook 6 to prevent the restricting member 16 from rotating further (turning counterclockwise) than the restricting position.

  In particular, in FIG. 3, the rear end portion (roller 33) of the container 10 is not in contact with the ground and the bottom surface thereof is supported by the guide roller 32, and the center of gravity of the container 10 is more vehicle than the guide roller 32. When it is on the rear side (when the lift arm 21 is approximately 45 ° with respect to the horizontal), the container 10 tends to fall in a direction in which the front wall 10a side rotates upward with the guide roller 32 as a fulcrum. As a result, the engagement pin 11 of the container 10 moves in the direction (upward) in which the engagement pin 11 is to be detached from the inside of the recess 8 of the hook 6 through the tip 9 (see the broken line in FIG. 12B). However, even in this case, the restricting member 16 is kept in the restricting position (or the semi-regulating position) as described above. Therefore, even if the engaging pin 11 that is going to move upward pushes the concave portion 36 of the restricting member 16 upward, the restricting member 16 remains in the restricting position side, and the engagement between the two is released and the container 10 is hooked. 6 can be prevented from falling off.

  Further, as shown in FIG. 4, the lift arm 21 and the hook arm 22 are rotated to a predetermined rotation position at the rear of the vehicle, so that the roller 33 of the container 10 is in contact with the ground. And the container 10 moves to the vehicle rear along the ground by the further rearward rotation of both arms 21 and 22. However, if the ground is an upwardly inclined surface (inclined surface) toward the rear of the vehicle, the container 10 becomes difficult to move to the rear of the vehicle. The pin 11 is about to come off the hook 6. However, since the restricting member 16 is restricted in its rotation as described above and is held at the semi-restricted position, the engagement pin 11 is not detached from the hook 6 by the claw portion 16a of the restricting member 16.

  In the state where the lift arm 21 and the hook arm 22 are in the predetermined rotation position, the center of gravity of the restriction member 16 moves to the rear side of the vehicle from the pin 31, and the restriction member 16 automatically turns by its own weight. Thus, the stopper 17 is configured to be separated from the base end portion 7 of the hook 6 so that a part of the outer peripheral arc surface 38 of the restricting member 16 can be in contact with the front wall 10a of the container 10. In other words, at this predetermined rotation position, the restriction member 16 shifts from the restriction position that rotates integrally with the hook 6 to the semi-regulation position that is in contact with the front wall 10 a of the container 10. That is, the restricting member 16 is in the restricting position until the predetermined rotation position where the roller 33 of the container 10 contacts the ground, and as described above, the container 10 rotates in the upward direction on the front wall 10a side with the guide roller 32 as a fulcrum. By trying to fall down, it is possible to reliably prevent the engagement pin 11 from being detached from the hook 6.

  Further, when the ground behind the vehicle is a downwardly inclined surface (inclined surface) toward the rear, when the roller 33 of the container 10 comes into contact with the ground, a force to move backward is applied to the container 10 due to the gradient. As a result, as shown in FIGS. 14A and 14B, the engaging pin 11 moves toward the tip portion 9 side of the hook 6, and further gets over the tip portion 9 and comes off the hook 6. However, even in this case, the engagement pin 11 is not detached from the recess 8 by contacting the stopper 17.

  4 to 5, the container 10 can be lowered to the ground by further rotating the lift arm 21 and the hook arm 22 downward (rear of the vehicle). In this state, as shown in FIG. 12 (e), the outer peripheral surface of the hook 6 on the tip 9 side and the front wall 10 a of the container 10 are largely separated, and the regulating member 16 and the front wall 10 a of the container 10 are separated from each other. The restriction on the rotation of the restriction member 16 in the direction of the opening position due to the contact is released, and the restriction member 16 is automatically switched from the semi-regulation position to the opening position by its own weight. Thereby, the opening part of the recessed part 8 of the hook 6 will be in the state open | released by the container 10 side, and the container 10 can leave | separate from the hook 6 by advancing a vehicle.

Next, the loading operation of the container 10 will be described.
As shown in FIGS. 5 and 11, the lift arm 21 and the hook arm 22 are moved to the rearward rotation position so that the opening of the recess 8 of the hook 6 faces the container 10 side. At this time, as shown in FIG. 11, the height position of the opening of the recess 8 of the hook 6 is set to a position lower than the engagement pin 11 of the container 10. Then, the vehicle is moved backward until the engagement pin 11 comes into contact with the guide surface 29 a (or the outer surface 27 of the hook 6) of the guide member 29 provided on the hook arm 22.

In this state, when the lift arm 21 and the hook arm 22 are rotated upward, the hook 6 moves upward. Thereby, the hook 6 approaches the engaging pin 11 from the base end 7 side, and the engaging pin 11 can be engaged with the concave portion 8 of the hook 6. During this operation, the engaging pin 11 is guided to the concave portion 8 of the hook 6 along the guide surface 29a and the guide surface portion 15, and moves into the concave portion 8 (broken line in FIG. 11). At this time, the restriction member 16 in the open position is hung from the hook 6 by the stopper 17 being hooked on the tip recess 43 of the tip portion 9 of the hook 5 that is located below the guide surface portion 15. Therefore, the guide of the engaging pin 11 is not hindered by the restricting member 16 (does not obstruct).
Thereby, the engaging pin 11 of the container 10 and the hook 6 are engaged.

5 to 4 and 3, when the lift arm 21 and the hook arm 22 are rotated upward (forward), the hook 6 causes the container 10 to move with the roller 33 of the container 10 as a fulcrum. Lift and pull in the direction of the body frame 2.
In this loading operation, particularly when the operation of lifting the container 10 from the state of FIG. 5 is started, the engaging pin 11 located in the recess 8 of the hook 6 moves to the tip 9 side of the hook 6 and is detached from the recess 8. However, according to the present invention, this can be prevented. That is, as shown in FIG. 11, when the lifting operation is started, the regulating member 16 is in the open position, and the stopper 17 is positioned at the distal end portion 9 of the hook 6 and is hooked on the distal end recess 43. And the upper surface of the stopper 17 latched by this front-end | tip recessed part 43 exists in the position which protruded upwards rather than the lowest surface of the recessed part 8 of the hook 6. FIG. Therefore, even if the engagement pin 11 is about to be detached from the recess 8 of the hook 6, the engagement pin 11 can be prevented from being detached from the recess 8 by contacting the stopper 17.
Further, during this loading operation, as shown in FIGS. 13G and 13H, when the posture of the hook 6 changes, the rotation contact surface 25 formed on the restricting member 16 and the engagement pin 11 are moved. When the rotation contact surface 25 is pressed by the engaging pin 11, the regulating member 16 rotates so as to automatically rise to the regulating position side without contacting the front wall 10 a of the container 10. . Thereby, the regulating member 16 becomes a semi-regulating position, and the regulating member 16 is held at that position. Thereby, the regulating member 16 is kept in the semi-regulated position, and it can be prevented that the engagement is released and the container 10 falls off the hook 6. Since the restricting member 16 rotates so as to rise without contacting the front wall 10a of the container 10, it is possible to suppress the occurrence of wear on the restricting member 16 and the front wall 10a.

  And the container 10 can be made to land on the vehicle body frame 2 by rotating the lift arm 21 and the hook arm 22 further forward from the state of FIG. 3 (FIG. 2). Thereafter, when the second telescopic actuator (not shown) extends, the hook arm 22 moves horizontally with the container 10 forward of the vehicle (FIG. 1). In the state of FIGS. 2 and 1, as shown in FIG. 12A, the restricting member 16 exists in the restricting position and prevents the engagement pin 11 of the container 10 from being detached from the hook 6. . Thereby, the vehicle can travel safely with the container 10 mounted.

FIG. 15 is a diagram showing a second embodiment of the present invention. The container handling vehicle of this embodiment is the same as that of the first embodiment in the overall configuration, and the configuration of the hook 6 is almost the same, but the regulating member 16 is different. The restriction member 16 is different in that the protrusion 24 that can protrude into the recess 8 of the hook 6 is not provided, and the rotation contact surface 25 is not formed.
In the second embodiment, the regulating member 16 has a substantially semicircular shape when viewed from the side, and a recess 36 having an arcuate surface is formed inside thereof. The restricting member 16 is in the open position in the state where the cargo handling arm 3 is rotated rearward of the vehicle as in the first embodiment (see FIG. 15). The restricting member 16 is in a position (open position) retracted outside the recess 8 of the hook 6. Thereby, the opening of the recessed part 8 is opened, so that the engaging pin 11 can be engaged and disengaged from the recessed part 8.

Regarding the loading / unloading operation of the container 10 in the second embodiment, differences from the first embodiment will be described.
As shown in FIG. 16 (e), the regulating member 16 is in the open position with the cargo handling arm 3 rotated to the vehicle rearward position. If the cargo handling arm 3 is in an intermediate state of operation (see FIG. 4) from this state, as shown in FIGS. The hook 6 is positioned between the front wall 10a and the engagement pin 11 so that the opening of the recess 8 faces upward. Furthermore, when the outer peripheral surface of the hook 6 on the tip 9 side approaches the front wall 10a of the container 10, the regulating member 16 comes into contact with and is pressed against the front wall 10a. The container 10 is rotated to the restriction position side (counterclockwise) so as to be lifted upward along the front wall 10 of the container 10. At this time, the stopper 17 that is hooked on the tip recess 43 of the hook 6 is separated from the tip recess 43, and a part of the outer circumferential arc surface 38 (the limit portion 18) of the restriction member 16 contacts the front wall 10 a of the container 10. It will be in the state. Accordingly, the engagement pin 11 is substantially surrounded from the periphery by the recess 36 of the restricting member 16 and the recess 8 of the hook 6.

  In the middle of this operation, the concave portion 36 of the restricting member 16 and the concave portion 8 of the hook 6 substantially surround the engagement pin 11 from the periphery, that is, a position where a part is surrounded from the periphery (quasi-regulatory position). Thus, the restriction member 16 closes the opening of the recess 8 so that the restriction member 16 can prevent the engaging pin 11 in the recess 8 from being detached from the recess 8.

  16D and 16C, even if the engaging pin 11 pushes the concave portion 36 of the restricting member 16 to rotate the restricting member 16 to the open position side (clockwise direction), the restricting member 16 is restricted. When a part of the outer peripheral arc surface 38 of the member 16 contacts the front wall 10a of the container 10, the restricting member 16 is restricted from rotating in the direction of the open position. That is, the outer peripheral circular arc surface 38 of the restricting member 16 serves as a restricting portion 18 that restricts the restricting member 16 from rotating in the direction of the open position. Thereby, it is possible to prevent the engagement pin 11 from being detached from the recess 8 of the hook 6.

  According to the vehicle including the cargo handling device 1 according to each of the above-described embodiments, the cargo handling arm 3 is rotated while the recess 8 of the hook 6 and the engagement pin 11 of the container 10 are engaged. The container 10 can be loaded and unloaded between the body frame 2 and the ground. When the restricting member 16 provided on the hook 6 of the cargo handling device 1 is in the restricting position, the engagement pin 11 of the container 10 can be prevented from being detached from the recess 8 of the hook 6, and when in the open position, the container 10 The engaging pin 11 is detachable from the recess 8 and the hook 6 and the engaging pin 11 can be attached and detached.

Further, during the loading / unloading operation of the container 10, in the reference example , as shown in FIGS. 8 and 10, the engaging pin 11 of the container 10 pushes the regulating member 16 to rotate the regulating member 16 to the open position side. Even if it tries, the regulating member 16 in which the stopper 17 exists in the regulating position side can be held in that state. In the first (and second ) embodiment, as shown in FIGS. 12 to 14 (FIG. 16), the engaging pin 11 of the container 10 pushes the restricting member 16 to open the restricting member 16. Even if it tries to rotate to the side, the engagement pin 11 is kept in a state of being caught in the recess 36 of the restricting member 16. Thereby, in each embodiment, it becomes possible to prevent the engaging part 11 of the container 10 from detaching from the recessed part 8.
8 (d), 12 (a), and 16 (a), the engagement pin 11 is attached to a high position on the front wall 10a of the container 10, and the engagement pin 11 is engaged. Even if the pin 11 tries to be separated from the recessed portion 8 beyond the raised portion 26, the engaging pin 11 is kept engaged with the hook 6 by the claw portion 16 a or the recessed portion 36 of the regulating member 16, and the container 10 is held in the hook 6. Can be prevented from falling off.

Further, the container handling vehicle of the present invention is not limited to the illustrated form, and may be of other forms within the scope of the present invention. In FIGS. 1 and 2, the hook arm 22 is lifted in the loading arm 3. Although the case where the arm 21 is driven to advance and retract linearly has been described, the hook arm 22 may be driven to rotate backward with respect to the lift arm 21 although not shown. Alternatively, the load handling arm 3 may be configured by integrating the hook arm 22 with respect to the lift arm 21 instead of moving (sliding or rotating).
Further, in FIGS. 7, 11, and 15, the guide member 19 is attached to the back surface 28 of the hook arm 22 to form the guide surface 29 a that guides the engagement pin 11 to the guide surface portion 15 on the hook 6 side. Although not shown, the back surface 28 of the hook arm 22 may be directly used as a guide surface for guiding the engaging pin 11 to the guide surface portion 15 without providing the guide member 19.
Further, the stopper 17 attached to the restriction member 16 in order to restrict the rotation of the restriction member 16 can be attached to the hook 6 or the hook arm 22 side.

  Further, in FIG. 8, FIG. 12, or FIG. 16, the recess 8 of the hook 6 is engaged with the engagement pin 11 of the container 10, and the restricting member 16 is in the open position when the restricting member 16 is on the restricting position side. Although the restricting portion 18 that restricts the rotation in the direction has been described as a part of the stopper 17 or the restricting member 16, the restricting portion 18 may be other than this, and the front wall 10a of the container 10 and the restricting member 16 A restricting portion 18 is provided between them, and when the front wall 10a side and the restricting member 16 side of the container 10 abut via the restricting portion 18, the restricting member 16 is rotated in the direction of the open position. It may be configured to limit. For example, although not illustrated, the limiting portion 18 may be a member attached to the hook 6 as a separate member from the stopper 17 or a member that is attached to the front wall 10a of the container 10 and abuts against the regulating member 16 side. There may be.

Is a side view showing a container handling vehicle both Reference Examples. It is a side view of the container handling vehicle in the state which moved the container horizontally back. It is a side view of the container handling vehicle in the state which rotated the handling arm upwards. It is a side view of the container handling vehicle in the state which rotated the handling arm further upward. It is a side view of a container handling vehicle in the state where a container exists on the ground. It is a side view of a container handling vehicle in a state where a dump arm and a cargo handling arm are tilted upward together with a container. It is a figure which shows the hook part of a cargo handling apparatus, and the front part of a container. It is explanatory drawing explaining the positional relationship of the hook and a control member in the loading / unloading operation | movement of a container. It is the figure which looked at the hook and control member in the state of FIG.8 (d) from the container side. It is explanatory drawing explaining the positional relationship of the hook and a control member in the loading / unloading operation | movement of a container. It is a figure which shows the hook part and front part of a container by 1st embodiment. It is explanatory drawing explaining the positional relationship of a hook and a control member in the lowering operation | movement of the container which concerns on embodiment of FIG. It is explanatory drawing explaining the positional relationship of a hook and a control member in the loading operation | movement of the container which concerns on embodiment of FIG. It is explanatory drawing explaining the positional relationship of a hook and a control member in the loading / unloading operation | movement of the container which concerns on embodiment of FIG. It is a figure which shows the hook part and front part of a container by 2nd embodiment. It is explanatory drawing explaining the positional relationship of a hook and a control member in the loading / unloading operation | movement of the container which concerns on embodiment of FIG. It is a figure which shows the conventional container handling vehicle, and is a state which has a container on the ground. It is a figure which shows the conventional container handling vehicle, and is a state with which the container was mounted in the vehicle.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cargo handling apparatus 2 Body frame 3 Cargo handling arm 6 Hook 7 Base end part 8 Recessed part 9 Tip part 10 Container 10a Front wall 11 Engagement part (engagement pin)
15 Guide surface portion 16 Restriction member 17 Stopper 18 Limiting portion 25 Rotating contact surface

Claims (4)

A vehicle body frame on which a container having an engagement portion provided on the front wall is placed;
A cargo handling arm that is turnable in the longitudinal direction of the vehicle with respect to the vehicle body frame, and a recess between the proximal end and the distal end that is fixed to the distal end side of the cargo handling arm and engages with the engaging portion. And an engagement operation in which the hook is made to approach the engagement portion from the base end side by rotating the cargo handling arm and the engagement portion is engaged with the recess. A loading and unloading device for loading and unloading the container between the vehicle body frame and the ground by rotating the loading and unloading arm with the engagement portion engaged with the recess,
With
The hook does not impede access to the engagement portion from the base end side during the engagement operation and a restriction position that prevents the engagement portion from being detached from the recess, and the engagement portion The hook is provided with one end on the hook so that it can be rotated by its own weight with the rotation of the cargo handling arm between the opening and the open position where it can be freely engaged with and disengaged from the recess, and the regulation is formed in a substantially arc shape in a side view. A member,
A stopper fixed to the other end of the restricting member, and holding the restricting member in the restricting position during the container unloading operation,
The restricting member has a recess that opens in substantially the same direction as the recess of the hook when in the open position, and surrounds the engaging portion together with the recess of the hook when in the restricting position. And
In a state where the engaging portion of the container is engaged with the concave portion of the hook and the restricting member is in a semi-regulating position surrounded by leaving a part from the periphery of the engaging portion , the restricting member is at the other end. The direction in which the part rotates to the open position by its own weight is arranged so as to be a direction close to the front wall side of the container,
When the restriction member tries to turn by its own weight from the semi-restriction position , the restriction portion restricts the restriction member from turning in the direction of the open position by coming into contact with the front wall side of the container. Is provided on the regulating member . 2. The container handling vehicle according to claim 1, wherein the restricting portion also serves as a part of an outer circumferential arc surface facing the front wall of the restricting member in a state where the restricting member is in the semi-regulated position .   The stopper is hooked to the tip of the hook in a state where the restricting member is in the open position, and the stopper is brought into contact with the engaging portion in the recess in the hooked state. The container handling vehicle according to claim 1 or 2, wherein the container handling vehicle is fixed to the other end portion of the restricting member so as to prevent separation of the portion. Before notated Tsu rotating contact surface for the engagement portion of click the container in the recess of is pressed to the engaging portion in engagement with rotating the regulating member to the regulating position side, the recess of the hook The container handling vehicle as described in any one of Claims 1-3 currently formed in the said one end part side of the recessed part of the said limitation member so that it may protrude in to.

Images