JP2022057663A - Container handling vehicle - Google Patents

Abstract

To reduce a burden on a worker when loading a container.SOLUTION: A container handling vehicle comprises: a chassis; a cargo handling arm performing a cargo handling operation targeting a container; and a container guide device for guiding the container. The container guide device comprises: a bed which supports the container; and a base which rotatably supports the bed. The bed comprises: a rear part; a front part which is vertically rotatable with respect to the rear part; and a lock mechanism which restrains the front part with respect to the rear part. The lock mechanism comprises: an engagement object part which is provided in the front part; and an engagement part which is provided in the rear part. When the front part or the rear part is lifted, the engagement part is engaged with the engagement object part and the front part is restrained with respect to the rear part.SELECTED DRAWING: Figure 16

Description

The present invention relates to a container handling vehicle provided with a cargo handling device for loading and unloading a container onto an chassis, and more particularly to a container handling vehicle that handles a standard container conforming to a standard such as a marine container.

A container handling vehicle that pulls up the container onto the chassis by rotating the L-shaped cargo handling arm to the rear of the vehicle body, hooking the hook at the tip to the container, and rotating the cargo handling arm forward (hereinafter referred to as "cargo handling vehicle"). ). The dedicated container, which was designed on the assumption that the cargo handling vehicle will carry out the loading work on its own, is equipped with the above-mentioned hook bar. On the other hand, containers conforming to standards such as ISO standards (hereinafter referred to as "standard containers"), such as marine containers that are generally loaded onto transportation means using other cargo handling machines such as cranes and forklifts, are classified as cargo handling vehicles. There is no part to hang the hook. Therefore, in a cargo handling vehicle for loading and unloading a dedicated container, an adapter equipped with a bar for hooking is attached to the standard container so that the standard container can be loaded on the chassis in a place where there is no cargo handling machine (Patent Document). 1).

Japanese Unexamined Patent Publication No. 2019-73236

In the cargo handling vehicle of Patent Document 1, the container guide device used for loading and unloading the standard container is configured so as not to interfere with the dedicated container when loading and unloading the dedicated container. Specifically, the bed of the container guide device has a center-folding structure consisting of a front part and a rear part, and when handling a dedicated container, the front part of the bed tilts forward and falls horizontally. When handling a standard container, the front and rear parts of the bed are integrally connected.

In Patent Document 1, it is necessary to insert and remove the connecting pin in order to connect or disconnect the front part and the rear part of the bed. However, the bed of the container guide device, which receives the weight of the standard container, is made robust and heavy. Therefore, it may be a burden on the operator to insert and remove the connecting pin with the other hand while supporting the front portion or the rear portion of the container guide device with one hand.

An object of the present invention is to provide a container handling vehicle that can reduce the burden on a worker when loading a container.

In order to achieve the above object, the present invention includes a chassis, a cargo handling arm rotatably provided on the chassis to perform cargo handling work for a container, and a container guide device for guiding the container. In a container handling vehicle, the container guide device includes a bed that supports the lower surface of the container by a load receiving surface, and a base that rotatably supports the bed via a rotation axis extending to the left and right. The bed comprises a rear part, a front part rotatably connected to the rear part, and a locking mechanism for restraining the front part to the rear part. An engaged portion provided on one of the front part and the rear part, and an engaging portion provided on the other of the front part and the rear part, the front part or the rear part. Provided is a container handling vehicle configured such that when a part is lifted, the engaging portion engages with the engaged portion and the front part is constrained to the rear part.

According to the present invention, it is possible to reduce the burden on the operator when loading the container.

Side view of a container handling vehicle according to an embodiment of the present invention Top view of a container handling vehicle according to an embodiment of the present invention Rear view of a container handling vehicle according to an embodiment of the present invention. Perspective view of the specially equipped unit provided in the container cargo handling vehicle of FIG. A perspective view showing the container guidance device when not in use from the outside in the vehicle width direction. A perspective view of the container guide device when not in use, viewed from the outside in the vehicle width direction. A perspective view showing the container guidance device when not in use from the inside in the vehicle width direction. Perspective view of the container guide device in the loading process of the standard container Side view of the container guide device in the loading process of the standard container Rear view of the container guide device during the loading process of the standard container Perspective view of the container guide device when loading a standard container Side view of the container guide device when loading a standard container Top view of the container guide device when loading a standard container Rear view of container guide device when loading standard container An explanatory diagram for explaining the movement of the process in which the container guide device shifts from the state of FIG. 5 to the state of FIG. An explanatory diagram for explaining the movement of the process in which the container guide device shifts from the state of FIG. 5 to the state of FIG. An explanatory diagram for explaining the movement of the process in which the container guide device shifts from the state of FIG. 5 to the state of FIG. The figure which shows the state of the loading work of the standard container by the container cargo handling vehicle of FIG. The figure which shows the state of the loading work of the standard container by the container cargo handling vehicle of FIG. The figure which shows the state of the loading work of the standard container by the container cargo handling vehicle of FIG. The figure which shows the state of the loading work of the standard container by the container cargo handling vehicle of FIG. The figure which shows the state of the loading work of the standard container by the container cargo handling vehicle of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

-Container cargo handling vehicle-
1 is a side view of a container handling vehicle according to an embodiment of the present invention, FIG. 2 is a plan view, and FIG. 3 is a rear view. In the present specification, the left side, right side, lower side, and upper side in the illustrated state of FIG. 2 are the front, rear, left, and right of the container handling vehicle (hereinafter, the container handling vehicle is simply referred to as a cargo handling vehicle). In addition, the work of loading and unloading containers on the chassis of the vehicle is referred to as "cargo handling work".

The container cargo handling vehicle shown in FIGS. 1 to 3 includes a vehicle 1 and a specially equipped unit 10. The vehicle 1 is a self-propelled vehicle, and has a driver's cab 2 in the front portion and a chassis 3 on the rear side of the driver's cab 2.

FIG. 4 is a perspective view of the specially equipped unit 10. In the figure, unlike other drawings, the specially equipped unit 10 in the dump posture in which the dump frame A2 (described later) stands up is shown for the visibility of the configuration. The special equipment unit 10 is a special equipment unit attached to the upper part of the chassis 3 for cargo handling work, and as shown in FIGS. 1 to 4, the cargo handling device A, the container guide device B, the lock device C, the jack D, It is equipped with an adapter E and the like. The lock device C is a device for fixing the loaded dedicated container when the dedicated container (described later) is loaded. The jack D is a device for suppressing the sinking of the rear portion of the chassis 3 during cargo handling work. The adapter E is a kind of attachment to be attached to the standard container X in order to load the standard container X on the chassis 3. This adapter E is fixed to a support post A11 provided at the front portion of the base frame A1 when not in use. The configurations of the cargo handling device A and the container guide device B will be described below.

-Cargo handling equipment-
The cargo handling device A is a device for pulling up the container onto the chassis 3 or lowering it from the chassis 3, and includes a base frame A1, a dump frame A2 (FIG. 2, etc.), a cargo handling arm A3, a drive unit A4, and a guide roller A5. There is.

The base frame A1 is the basic structure of the cargo handling device A, is formed in a horizontal rectangular shape, extends in the front-rear direction, and is overlapped and fixed on the upper part of the chassis 3. The dump frame A2 is a frame for tilting up the container on the chassis 3 in order to dump and discharge the contents of the loaded container, and is a frame of the base frame A1 via a shaft A6 extending in the left-right direction (vehicle width direction). It is rotatably connected to the rear end. The dump frame A2 has a shorter length in the front-rear direction than the base frame A1.

The cargo handling arm A3 is an arm for cargo handling work, and includes a base arm A7 and a hook arm A8. The base arm A7 is a cylindrical arm that extends linearly back and forth, and is rotatably connected to the front part (tip part) of the dump frame A2 via a shaft A9 extending left and right, and rotates back and forth on the chassis 3. Move. The hook arm A8 is an L-shaped arm having a rear portion extending back and forth and a front portion rising, and the rear portion is slidably inserted into the base arm A7. A hook F for hanging on the standard container X (FIG. 20) is provided at the tip (upper end) of the hook arm A8.

Although not shown in particular, the upper portion of the upright portion of the hook arm A8 is rotatably formed with respect to the lower portion by a hydraulic cylinder (not shown), and the height and front-rear position of the hook F are formed on this rotation locus. Etc. may be configured to be changed. In the present embodiment, the configuration in which the hook arm A8 slides with respect to the base arm A7 is illustrated, but the hook arm A8 may rotate instead of sliding with respect to the base arm A7. Further, the cargo handling arm A3 may not be divided into the base arm A7 and the hook arm A8, but may be an integrated L-shaped arm.

The standard container X is a container manufactured in accordance with a standard such as an ISO standard, and is, for example, a marine container. The standard container X is not manufactured assuming loading and unloading work by a cargo handling vehicle, and is usually loaded on a transportation means such as a ship, a trailer, or a railroad by a separate cargo handling machine such as a crane or a forklift. The standard container X formed in a rectangular parallelepiped shape is provided with corner fittings having recesses on each surface at each of the eight corners.

The drive unit A4 drives the cargo handling arm A3. The drive unit A4 includes a pair of left and right hydraulic cylinders A10 for rotating the base arm A7, a hydraulic cylinder for sliding the hook arm A8 with respect to the base arm A7, and a hydraulic device for driving these cylinders, although not shown. I have. The base ends of the left and right hydraulic cylinders A10 are rotatably connected to the base frame A1, and the tips are rotatably connected to the rear portion of the base arm A7. The hydraulic cylinder that slides the hook arm A8 is housed inside the base arm A7, and the base end is connected to the base arm A7 and the tip is connected to the hook arm A8.

The guide roller A5 is a roller for guiding a dedicated container (not shown), and is provided at both left and right ends of a shaft A6 that supports the dump frame A2. The "dedicated container" is a container manufactured assuming cargo handling work by a cargo handling vehicle, and is configured so that cargo handling work can be performed without using the adapter E. The guide roller A5 is arranged at a position lower than the guide surface of the standard container X by the container guide device B (the lower surface of the loaded standard container X) so as not to interfere with the standard container X even during cargo handling work. ing. The dedicated container can be referred to in Japanese Patent No. 3853051 and the like.

In the cargo handling vehicle according to the present embodiment, only the cargo handling arm A3 rotates back and forth while the dump frame A2 is in a horizontal posture during cargo handling work, and the dump frame A2 rotates integrally with the cargo handling arm A3 during dump work. Move. In order to enable this operation, a dump lock device (not shown) for locking and unlocking the cargo handling arm A3 is provided for the dump frame A2.

The dump lock device includes a lock pin and a lock hook that can be engaged with and detached from the lock pin. The lock pin is provided at the tip of the dump frame A2, and the locking hook is rotatably provided on both side surfaces of the base arm A7 of the cargo handling arm A3. The sliding operation of the hook arm A8 with respect to the base arm A7 is used for engaging and disengaging the locking hook with respect to the lock pin. For example, the lock hook receives a force such as a spring in the direction of being locked to the lock pin, and when the hook arm A8 slides to the vicinity of the rear end, the operating rod is pushed by the hook arm A8, and the lock hook is released from the lock pin. An example of a configuration that comes off. In this case, when the hook arm A8 retracts to the vicinity of the rear end, the lock of the cargo handling arm A3 and the dump frame A2 is released, and the cargo handling arm A3 rotates back and forth with respect to the dump frame A2 due to the expansion and contraction of the hydraulic cylinder A10. .. On the contrary, when the hook arm A8 moves forward, the cargo handling arm A3 and the dump frame A2 are locked, and when the hydraulic cylinder A10 expands and contracts in this state, the dump frame A2 tilts up and down together with the cargo handling arm A3. The configuration of such a dump lock device is described in Japanese Patent No. 5284541 and the like.

-Container guidance device-
FIG. 5 is a perspective view showing the container guide device B when not in use from the outside in the vehicle width direction, FIG. 6 is a perspective view looking up from the outside in the vehicle width direction, and FIG. 7 is a perspective view in the vehicle width direction. It is a perspective view showing a bird's-eye view from the inside. 8 is a perspective view of the container guide device B in the loading process of the standard container, FIG. 9 is a side view thereof, and FIG. 10 is a rear view thereof. 11 is a perspective view of the container guide device B when the standard container is loaded, FIG. 12 is a side view thereof, FIG. 13 is a plan view thereof, and FIG. 14 is a rear view thereof. 15-17 are explanatory views for explaining the movement of the container guide device B in the process of transitioning from the state of FIG. 5 to the state of FIG. 8, and the state in which the outer cover is removed is shown to illustrate the state of the internal mechanism. It represents a movement. It should be noted that FIGS. 5 to 17 show the left side container guide device B as a representative of the left and right container guide devices B. The container guide device B on the right side has a symmetrical configuration with the container guide device B on the left side, and has the same configuration as the container guide device B on the left side except for that point.

The container guide device B is a device that supports and guides the standard container X (FIG. 20) that is the target of cargo handling work using the adapter E, and is provided on the left and right of the cross member at the rear of the base frame A1 of the special equipment unit 10. Has been done. The left and right container guide devices B each include a base B10, a bed B20, and a guide member B30.

The base B10 is a basic structure of the container guide device B, and rotatably supports the bed B20 via a rotation shaft Bs extending to the left and right. The base B10 is fixed to both left and right ends of the cross member at the rear of the base frame A1 by means such as bolts or welding.

The bed B20 is a member that receives the standard container X, and is divided into a front part B21 and a rear part B22.

The front part B21 is rotatably connected to the rear part B22. In the present embodiment, the above-mentioned rotating shaft Bs that supports the bed B20 with respect to the base B10 is also used as the shaft connecting the front part B21 and the rear part B22, and the rear portion is provided with the rotating shaft Bs as a fulcrum. The front part B21 rotates up and down with respect to the part B22. The front part B21 rotates with the rotation axis Bs as a fulcrum, and the lower part corresponds to the stopper B27 (FIG. 9) provided on the upper part of the cross member at the rear part of the base frame A1 in a posture in which the load receiving surface is horizontal. As a result, the front part B21 is prevented from tilting forward beyond the horizontal posture and falling.

The load receiving surface of the front part B21 is a surface that receives the standard container X, and in the case of the present embodiment, it is a plane that is circumscribed in common with a plurality of rollers Br described later provided in the front part B21. See the alternate long and short dash line in FIG. 12). There are two common contact planes for a plurality of roller Brs, but when the front part B21 is horizontal, the plane including the line connecting the upper ends of the roller Brs in a side view is the load receiving surface as shown in FIG. Is. A similar load receiving surface is also present on the rear part B22 (see the alternate long and short dash line in FIG. 12).

On the other hand, the rear part B22 is provided with a lashing mechanism B28. When the standard container X is loaded on the chassis 3, the lashing mechanism B28 locks the standard container X to both left and right rear portions on the lower surface of the standard container X to tie the standard container X. Further, the rear part B22 is provided with a stopper B29 (FIG. 7), and when the rear part B22 tilts backward to the limit angle, the stopper B29 hits the base B10, and the rear part B22 tilts backward and falls over the limit angle. There is no such thing (Fig. 7).

Further, the container guide device B is provided with a fixing pin Bp for fixing the bed B20 to the base B10 in a posture in which the front part B21 and the rear part B22 are bent. Specifically, a connecting bar B23 (FIG. 6) is rotatably provided at the lower part of the rear part B22, and a fixing pin Bp penetrates the connecting bar B23 and the front part B21. It is inserted into the base frame A1 (or the base B10). As a result, the bed B20 is fixed in a bent posture in which the front part B21 extends forward and the rear part B22 tilts downward (FIG. 5). In this state, since the connecting bar B23 is fixed to the front part B21, the front part B21 and the rear part B22 are also restrained from each other. When releasing this constraint, the fixing pin Bp is pulled out, the connecting bar B23 is rotated backward, and the connecting bar B23 is fixed to the rear part B22 by the fixing pin Bp (FIG. 9). At this time, as described above, the forward tilt angle of the front part B21 and the backward tilt angle of the rear part B22 are limited by the stoppers B27 and B29. Therefore, in both the posture shown in FIG. 6 and the posture shown in FIG. 9, the weights of the front part B21 and the rear part B22 are not applied to the fixing pin Bp.

The container guide device B is provided with a roller Br that guides the standard container X when loading and unloading the standard container X. As shown in FIG. 11, the axis of the roller Br is configured so that the bed B20 extends left and right in a horizontal state and is parallel to the wheel axis of the chassis 3. One or more rollers Br are provided on at least one upper portion of the front part B21 and the rear part B22 (three in the front part B21 and two in the rear part B22 in this embodiment). When the bed B20 is horizontal, the load receiving surface of the bed B20 is configured to be higher than the guide roller A5 for the dedicated container so that the guide roller A5 does not interfere with the standard container X during cargo handling work. There is.

The guide member B30 is a member that presses the left and right sides of the lower portion of the standard container X, is provided outside the bed B20 in the vehicle width direction, and projects upward from the load receiving surface of the bed B20. In the present embodiment, as the guide member B30, two guide members B31 and B32 are provided in one container guide device B. The guide members B31 and B32 are both plate-shaped or block-shaped members extending back and forth. The guide member B31 is arranged at the front portion of the bed B20 and is fixed to the outside of the front portion B21 in the vehicle width direction. The guide member B32 is arranged at the rear of the bed B20 and is fixed to the outside of the rear part B22 in the vehicle width direction. The distance between the left and right guide members B31 when the receiving surface is horizontal is adjusted to the left and right widths of the lower surface of the standard container X, and is about the same as or slightly wider than the left and right widths of the lower surface of the standard container X. Is. The same applies to the distance between the left and right guide members B32.

In the present embodiment, in the posture in which the load receiving surface is horizontal, the bed B20 extends parallel to the vehicle center line (front and back in the direction orthogonal to the wheel axis of the chassis 3), and the guide members B31 of the left and right container guide devices B are parallel. become. The left and right guide members B32 are also parallel. However, when the front part B21 and the rear part B22 are flush with each other, the center of gravity of the entire bed B20 is located behind the rotation axis Bs, and the bed B20 tilts backward due to its own weight. Turn the receiving surface to the back.

As shown in FIGS. 10, 13 and 14, the center line CL of the rotation axis Bs of the bed B20 is inclined with respect to the wheel axis of the chassis 3 (the line WL parallel to the wheel axis is indicated by a two-dot chain line). are doing. Specifically, the center line CL of the rotation axis Bs is inclined downward toward the outside in the vehicle width direction when viewed from the rear side (FIG. 10), and toward the outside in the vehicle width direction when viewed from above. It is tilted to the front. That is, the center line CL of the rotation axis Bs is inclined diagonally downward and forward toward the outside in the vehicle width direction with respect to the wheel axis. As a result, the left and right beds B20 take a posture of opening upward to each other as shown in FIG. 10 and the like in the standing state, while being parallel to each other as shown in FIGS. 13 and 14 in the horizontal state. It is configured to take a posture.

-Lock mechanism-
The container guide device B is provided with a lock mechanism B40 for restraining the front part B21 and the rear baht B22 of the bed B20 in a posture in which the receiving surfaces are flush with each other (FIGS. 8-14). The locking mechanism B40 includes a pin B41, a hook B42, and a spring B44 (FIGS. 15-17). Here, when the load receiving surface is flush with each other, as shown in FIG. 12, the load receiving surface (dashed line) of the front part B21 and the load receiving surface (dashed line) of the rear baht B22 are flush with each other. Means to be located on top.

The pin B41 is an engaged portion provided on one of the front part B21 and the rear part B22 (in this example, the front part B21). The pin B41 is fixed to the front part B21 and extends to the left and right, rotates together with the front part B21 with the rotation axis Bs as a fulcrum, and is displaced relative to the rear part B22.

The hook B42 is an engaging portion provided on the other side of the front part B21 and the rear part B22 (in this example, the rear part B22). The hook B42 is rotatably connected to the rear part B22 in a posture in which the ventral side (inner peripheral side) is directed toward the pin B41 via a rotation shaft B43 extending to the left and right. When the hook B42 is hooked on the pin B41, the front part B21 and the rear part B22 of the bed B20 are restrained from each other with their load receiving surfaces flush with each other. The pin B41 and the hook B42 are configured to be visible from above and below the bed B20, and the appearance of the hook B42 hanging on the pin B41 can be easily visually recognized from the outside.

The spring B44 exerts a restoring force on the hook B42 and constantly urges the hook B42 so as to rotate ventral toward the pin B41.

-Cargo handling work-
When loading the standard container X into the chassis 3, the cargo handling vehicle is stopped at a predetermined position in front of the standard container X, and first, in the state of FIGS. 1 to 3, the adapter E and the support post A11 are connected manually or by remote control operation. solve. Further, the front part B21 of the bed B20 of the container guide device B is raised, and the receiving surfaces of the front part B21 and the rear part B22 are flush with each other and turned to the rear (described later).

Next, the jack D is lowered and the hook arm A8 is advanced by performing a predetermined operation with an operating device such as a remote controller, and the hook F is hooked on the adapter E as shown in FIG. When the hook F is hooked on the adapter E, the hook arm A8 is retracted together with the adapter E, the hydraulic cylinder A10 is extended, and the cargo handling arm A3 is rotated backward as shown in FIG. The adapter E brought out to the rear of the vehicle in this way is fixed to the front surface of the standard container X as shown in FIG.

After the work of moving and mounting the adapter E is completed, the cargo handling arm A3 is rotated forward by performing a predetermined operation with an operating device such as a remote controller, and the standard container X is pulled up onto the chassis 3 as shown in FIG. .. With the operation of the cargo handling arm A3, the front side of the standard container X is lifted with the lower part of the rear end as a fulcrum, and the cargo handling arm A3 rotates forward so that the vehicle and the standard container X come relatively close to each other. At that time, since the standard container X is heavy and does not have a roller at the bottom, the vehicle retracts and enters the lower side of the standard container X, and the left and right sides of the lower surface of the standard container X face the receiving surface to the rear. It can be received by the container guide device B of. After that, as the cargo handling arm A3 further rotates forward, the standard container X is pulled up to the upper part of the chassis 3 while being guided by the guide member B30 of the container guide device B on the left and right lower parts. The container guide device B guides the lower surface of the standard container X to be pulled up by a roller Br, and rotates around the rotation axis Bs as the angle of the standard container X changes, so that the load receiving surface of the bed B20 is leveled. When the cargo handling arm A3 falls down horizontally, the hook arm A8 is advanced, and the standard container X is advanced to a predetermined position on the chassis 3 as shown in FIG. 22. Finally, the standard container X is fixed to the container guide device B by the lashing mechanism B28 provided in the container guide device B, and the loading work of the standard container X is completed.

The unloading work of unloading the standard container X from the loading platform can be performed in the reverse procedure of the above container loading work.

-Operation of lock mechanism-
In the state where the standard container X is not loaded, the bed B20 of the container guide device B is restrained by the fixing pin Bp in a bent posture as shown in FIG. When loading the standard container X, first, the fixing pin Bp is pulled out, the connecting bar B23 is rotated backward, and the pulled out fixing pin Bp is inserted into the connecting bar B23 and the rear part B22. As a result, the restraint of the front part B21 with respect to the rear part B22 via the connecting bar B23 is released, the rotation of the front part B21 with respect to the rear part B22 is allowed, and the fixing pin Bp can be temporarily placed at the same time.

Next, as shown in FIG. 16, the front part B21 is manually pushed up from below to erect the front part B21. Then, in the process of raising the front part B21 with respect to the rear part B22, as shown in FIG. 16, the tip surface of the hook B42 is pushed by the pin B41 of the front part B21 to resist the restoring force of the spring B44. The hook B42 opens (rotates to its dorsal side (outer peripheral side)).

After that, as shown in FIG. 17, when the front part B21 is lifted and stands up until the load receiving surfaces of the front part B21 and the rear part are flush with each other, the pin B41 exceeds the tip surface of the hook B42. Then, the hook B42 released from the pressing force of the pin B41 rotates ventrally by the restoring force of the spring B44, and the hook B42 is hooked on the pin B41. In this way, the hook B42 engages with the pin B41, the front part B21 is connected to the rear part B22 with the load receiving surface flush with each other, and the bed B20 is in a posture in which the load receiving surface faces rearward. Will be.

Although the above is an example of the work of lifting the front part B21, the lock mechanism B40 functions in the same manner even if the rear part B22 is lifted from the state of FIG.

Further, the container guide device B is provided with a lever B45 as an operation unit for manually disengaging the hook B42 with the pin B41. The lever B45 is provided on the hook B42 (rotating shaft B43 in this example). In this example, the lever B45 is illustrated as the operation unit, but the operation unit is not particularly limited to the form of the illustrated lever B45, and a mechanism other than the lever may be adopted. When lowering the standard container X and returning the posture of the bed B20 to the bending posture shown in FIG. 15, the front part B21 is supported by hand in the state of FIG. 17, and the fixing pin Bp is pulled out from the rear part B22. After that, the lever B45 is tilted backward to remove the hook B42 from the pin B41, and the front part B21 is lowered as it is until it becomes horizontal. Then, as shown in FIG. 15, the bed B20 is restrained in a bent posture by the connecting bar B23 and the fixing pin Bp.

-effect-
(1) As described above, when loading the standard container X, the front part B21 and the rear part B22 of the bed B20 can be connected by simply pushing up the front part B21 of the bed B20. Since it is not necessary to connect the front part and the rear part by aligning the pin holes with the front part or the rear part of the bed lifted as in the conventional case, the burden on the operator when loading the standard container X is reduced. be able to. Further, in the conventional configuration in which the front part and the rear part of the bed are connected by a pin, the overlapping pin holes are blocked by the pin and it is difficult to visually confirm the connected state. There is also an advantage that it is easy to visually confirm how the hook B42 is hooked on the pin B41.

In this embodiment, the lock mechanism B40 using the pin B41 and the hook B42 has been described as an example, but for example, a configuration using a latch mechanism can also be applied. For example, a hole is provided in one of the front part B21 or the rear part B22, and a latch bolt is provided in the other. When the bed B20 shifts from the posture shown in FIG. The configuration in which the parts B22 are connected can be exemplified.

(2) Since the hook B42 is urged toward the pin B41 by the spring B44, the hook B42 is not only automatically hooked on the pin B41 by simply lifting the front part B21 or the rear part B22 of the bed B20. It also has the effect of preventing the hook B42 from coming off from the pin B41.

However, in order to obtain this effect, for example, it is conceivable that the center of gravity of the hook B42 is always located closer to the pin B41 than the rotation shaft B43, and the hook B42 is urged to the pin B41 by gravity.

(3) In the present embodiment, by engaging the hook B42 with the pin B41, the load receiving surface of the front part B21 and the rear part B22 is constrained flush with each other. For example, when loading the standard container X, in the state of FIG. 9, the standard container X first comes into contact with the front part B21, and the front part B21 rotates along the lower surface of the standard container X to support the standard container X. As the front part B21 rotates, the rear part B22 restrained by the front part B21 is lifted to support the lower surface of the standard container X. The tilt angle of the standard container X changes in the process of loading the standard container X, but the bed 20 rotates following the change in the tilt angle of the standard container X, and the receiving surfaces of both the front part B21 and the rear part B22 are all over. The state of supporting the standard container X is maintained. Therefore, in the loading operation of the standard container X, the load of the standard container X can be distributed and supported by the entire front part B21 and the rear part B22.

However, as long as the essential effect (1) is obtained, it is not always necessary that the receiving surfaces of the front part B21 and the rear part B22 are constrained flush with each other. For example, the receiving surface of the front part B21 and the rear part B22 may be constrained at slightly different angles, if necessary. The design can be appropriately changed according to the variation in the shape of the lower surface of the standard container X.

(4) By providing the lever B45, the hook B42 can be easily released. With the hook B42 released, the bed B20 can be returned to the state shown in FIG. 15 simply by slowly lowering the front part B21 or the rear part B22.

(5) Since the rotating shaft Bs that supports the bed B20 also serves as the connecting shaft between the front part B21 and the rear part B22, there are merits of weight reduction and structural simplification by reducing the number of parts.

However, as long as the essential effect (1) is obtained, the connecting shaft between the front part B21 and the rear part B22 may be different from the rotation shaft Bs.

(6) The forward tilt angle of the front part B21 and the backward tilt angle of the rear part B22 are limited by the stoppers B27 and B29, and the load of the bed B20 is received by the stopper B27 or B29 in the postures of FIGS. 15 and 17. As a result, the weight of the front part B21 and the rear part B22 is not applied to the fixing pin Bp, so that the fixing pin Bp can be smoothly inserted and removed.

However, as long as the essential effect (1) is obtained, the fixed pin Bp may be loaded with the load of the bed B20 in the postures of FIGS. 15 and 17.

(7) In the present embodiment, the rotation shaft Bs of the bed B20 of the container guide device B is tilted with respect to the wheel shaft as described above. As a result, when the bed B20 tilts backward with the load receiving surface facing backward, the left and right beds B20 become V-shaped and expand upward (FIG. 10) when viewed from the rear side, compared to the left and right widths of the standard container X. The distance between the left and right guide members B31 becomes wider. Therefore, even if the left and right centers of the standard container X are slightly displaced or tilted with respect to the center of the vehicle, this can be absorbed and the standard container X can be smoothly received between the left and right guide members B31. When the bed B20 rotates with the standard container X in the process of pulling up the standard container X, the left and right beds B20 approach in parallel as the receiving surface falls horizontally, and the distance between the left and right guide members B31 becomes narrower. For example, even if the center of the standard container X and the vehicle are deviated, the guide member B31 moves the standard container X to the center of the vehicle during the pulling process, and when the receiving surface becomes horizontal, the lower part of the standard container X is the guide member B31 from the left and right. It will be in the state of being pressed by. Further, contrary to the guide member B31 on the front side, the distance between the guide members B32 on the rear side, which is narrower than the left and right width of the standard container X before the pulling up of the standard container X, is widened in the process of pulling up the standard container X. When the receiving surface of the rear part B22 of the bed B20 comes into contact with the lower surface of the standard container X, the guide member B32 on the rear side together with the guide member B31 on the front side presses and guides the lower part of the standard container X from the left and right. As described above, according to the present embodiment, the accuracy required for the alignment of the standard container X with respect to the chassis 3 when the standard container X is pulled up to the chassis 3 is lowered, and the standard container X can be efficiently loaded.

However, as long as the essential effect (1) is obtained, the rotation axis Bs of the bed B20 may be configured to be parallel to the wheel axis.

-Modification example-
In the above embodiment, a configuration including a configuration (guide roller A5, lock device C, etc.) for loading a dedicated container on the chassis 3 is described as an example in addition to the container guide device B that receives the standard container X. .. However, the configuration for loading a dedicated container is not always necessary and can be omitted. Further, although the container guide device B has been described as receiving the standard container X equipped with the adapter E, the container guide device B receives a container (such as the dedicated container mentioned above) that is raised and lowered without using the adapter. Can also be used as. In such a cargo handling vehicle that does not load the standard container X, the adapter E is unnecessary and can be omitted. Further, if the guide roller A5 becomes unnecessary as a result of the configuration in which the container guide device B receives the dedicated container, this can be omitted.

Further, in the above-described embodiment, the configuration in which the hook B42 is hooked on the pin B41 when the front part B21 is lifted and stands up until the load receiving surfaces of the front part B21 and the rear part B22 are flush with each other has been described. Instead of this configuration, the hook B42 may be hooked on the pin B41 before the load receiving surface of the front part B21 is flush with the load receiving surface of the rear part B22.

Further, in the above embodiment, the hook B42 is hooked on the pin B41 when the front part B21 or the rear part B22 is lifted and the load receiving surfaces are flush with each other. However, for example, if the position where the load receiving surfaces of the front part B21 and the rear part B22 are flush with each other is slightly exceeded (for example, about 5 degrees), the pin B41 may exceed the tip surface of the hook B42. Even in this case, after the pin B41 exceeds the tip surface of the hook B42 and the hook B42 is hooked on the pin B41, the front part B21 or the rear part B22 is lowered so that the front part B21 and the rear part B22 are mutually connected. It may be configured so that the consignment receiving surfaces of the above are flush with each other.

1 ... Vehicle (container cargo handling vehicle), 3 ... Chassis, A3 ... Cargo handling arm, B ... Container guide device, B10 ... Base, B20 ... Bed, B21 ... Front parts, B22 ... Rear parts, B27, B29 ... Stoppers, B40 ... Lock mechanism, B41 ... Pin (engaged part), B42 ... Hook (engaged part), B44 ... Spring, B45 ... Lever (operation part), Bs ... Rotating shaft, Bp ... Fixed pin, X ... Standard container ( container)

Claims (7)

It is equipped with a chassis, a cargo handling arm that is rotatably provided on the chassis and is provided to perform cargo handling work for a container, and a container guide device that guides the container.
In a container handling vehicle, the container guide device includes a bed that supports the lower surface of the container by a load receiving surface, and a base that rotatably supports the bed via a rotation axis extending to the left and right.
The bed comprises a rear part, a front part rotatably connected to the rear part, and a locking mechanism for restraining the front part to the rear part.
The locking mechanism is configured to include an engaged portion provided on one of the front part and the rear part, and an engaging portion provided on the other of the front part and the rear part. Container cargo handling characterized in that when the part or the rear part is lifted, the engaging portion engages with the engaged portion and the front part is constrained to the rear part. vehicle. In the container cargo handling vehicle of claim 1,
The engaged portion is a pin, and the engaged portion is a hook.
The locking mechanism includes a spring that exerts a restoring force on the engaging portion.
In the process of lifting the front part or the rear part, the tip surface of the hook is pushed by the pin and the hook opens against the restoring force of the spring, and when the pin exceeds the tip surface, the spring A container handling vehicle characterized in that the hook is hooked on the pin by a restoring force. In the container handling vehicle of claim 1 or 2,
A container handling vehicle characterized in that the loading surface of the front part and the rear part is constrained flush with each other by engaging the engaging portion with the engaged portion. .. In the container cargo handling vehicle according to any one of claims 1-3
A container cargo handling vehicle comprising an operation unit for manually disengaging the engaged portion from the engaged portion. In the container cargo handling vehicle according to any one of claims 1-4
A container handling vehicle characterized in that the front part is connected to the rear part by the rotation shaft. In the container cargo handling vehicle according to any one of claims 1-5,
The front part and the rear part are provided with a fixing pin for fixing the bed to the base in a bent posture.
The container is characterized in that the forward tilt angle of the front part and the backward tilt angle of the rear part are limited by the stopper so that the weight of the front part and the rear part is not applied to the fixing pin. Cargo handling vehicle. In the container cargo handling vehicle according to any one of claims 1-6,
A container handling vehicle characterized in that the rotating shaft is inclined with respect to the wheel shaft of the chassis.

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