JP6605189B2 - Container for cargo handling vehicles - Google Patents

Description

  The present invention relates to a container for a cargo handling vehicle that is mounted on a chassis of a cargo handling vehicle so as to be able to be loaded and unloaded between the chassis and the ground.

  Conventionally, it is known that a container mounted on a chassis of a cargo handling vehicle is lowered to the ground by a detaching device so that the cargo handling work can be performed at a height close to the ground when loading / unloading the cargo on the container (described later). Patent Document 1).

Japanese Patent No. 4963096

Meanwhile, in the cargo handling vehicle, the cargo handling vehicle undercarriage, since at a position higher than the ground, when unloading a container mounted on the chassis on the ground, the container is slid over the chassis to the rear After that, it is moved on a guide roller provided at the rear end of the chassis, and the container is moved while being inclined backward and downward to be lowered to the ground. A grounding protective cap that is warped toward the rear end side is fixed to a grounding location on the rear side of the container.

  However, there are various places where the container is lowered, such as uneven ground, uneven ground such as soft ground, and ground that becomes muddy due to bad weather. In the grounding protective cap of the conventional cargo handling vehicle, it is fixed to the container and is in contact with the ground. Since the line perpendicular to the container lowering direction is a straight line that does not change the relative position with respect to the container, when the container lowering place is rough or muddy ground, There is a problem that the load is concentrated and the grounding protective cap sinks into the place where the load is lowered, thereby hindering the container detaching operation.

  The present invention has been made in view of the above circumstances, and a new container for a cargo handling vehicle is provided, which allows a container to be smoothly detached and attached even when the container is placed on irregular or muddy ground. The purpose is to provide.

In order to achieve the above object, the invention of claim 1 is mounted on a chassis of a cargo handling vehicle so as to be movable in the front-rear direction, and is tilted rearward and downward between the chassis and the ground by a cargo handling device provided on the chassis. It is a container for a cargo handling vehicle that moves while grounding the lower end of the rear end and drops it to the ground,
The container includes a container main body on which a load can be loaded, and a grounding sled and a ground roller that can be grounded are provided at a lower end of the container main body, and the grounding sled is in a direction orthogonal to the loading / unloading direction of the container main body. The grounding roller is swingable about a swing shaft having an axis, and the grounding roller is provided to be rotatable about a rotation shaft parallel to the swing shaft.

  In order to achieve the above object, the invention of claim 2 is characterized in that, in the invention of claim 1, the rocking shaft of the grounding sled and the rotation shaft of the grounding roller are matched.

  According to the first aspect of the present invention, when the container body is loaded and unloaded between the chassis and the ground, the grounding sled is configured so that the grounding surface of the grounding sled is spread over the entire area regardless of the tilting position of the container body. The surface roller can always be brought into surface contact with the ground, and the ground roller can always roll smoothly on the ground. As a result, the grounding sled and the grounding roller cooperate to move the container main body smoothly so that the container main body can be smoothly detached from the chassis.

  According to the second aspect of the present invention, since the rocking shaft of the grounding sled and the rotation shaft of the grounding roller are matched, the grounding roller always rolls on the ground even if the grounding sled is swung. In particular, the container can be smoothly detached and attached on a leveling surface such as a paved ground.

A perspective view of a cargo handling vehicle loaded with containers (first embodiment) FIG. 1 arrow 2 view (first embodiment) FIG. 2 is a view taken along arrow 3 (first embodiment). Enlarged view of the phantom line encircled portion shown in FIG. 2 (first embodiment) Sectional view along line 5-5 in FIG. 4 (first embodiment) Side view of cargo handling vehicle showing state of container dumping (first embodiment) Side view of a cargo handling vehicle showing a state during unloading of a container (first embodiment) Side view of a cargo handling vehicle showing a container unloading end state (first embodiment) (A) Side view of a cargo handling vehicle showing a state in which a long object is loaded on a container and a fixed carrier (first embodiment) (B) Side view of a cargo handling vehicle showing a state in which a long object is unloaded from the container and the fixed carrier Figure (first embodiment) Control block diagram of control device (first embodiment) Flow chart of control device (first embodiment) (A) Side view of ground roller and ground sled when loading container chassis (second embodiment) (B) Side view of ground roller and ground sled when container is tilted (second embodiment) (A) Side view of ground roller and ground sled when container chassis is loaded (third embodiment) (B) Side view of ground roller and ground sled when container is tilted (third embodiment) (A) Side view of ground roller and ground sled when loaded on container chassis (fourth embodiment) (B) Side view of ground roller and ground sled when container is tilted (fourth embodiment)

  A first embodiment of the present invention will be described with reference to FIGS.

  In the following description, the front and rear in the traveling direction of the cargo handling vehicle V are “front and rear”, the upper and lower are “up and down”, and the left and right are “left and right”.

  In FIGS. 1 and 2, a cargo handling vehicle V is a four-wheel drive vehicle in which both front and rear wheels are driven, and is a container for long objects that can be loaded and unloaded on a chassis 1 on a chassis frame F. A main body (hereinafter referred to as a container main body) 2, a cargo handling device 3 for loading and unloading the container main body 2, and a fixed cargo bed 4 fixed on the chassis 1 are provided.

  First, the structure of the container body 2 will be described with reference to FIGS.

  The container body 2 includes a rectangular subframe 10 that is long in the front-rear direction of the chassis 1 and a floor plate 11 that is laid on the upper surface of the subframe 10, and the left and right side surfaces, the upper surface, and the rear surface are open. . A column 12 extending in the vertical direction is erected integrally at the center of the front surface of the subframe 10 in the left-right direction. This support | pillar 12 is formed in the bar | burr shape long in the vertical direction in the cross-sectional U shape of open front. Further, an engagement pin 13 is fixed laterally to the upper end of the support column 12, and the engagement pin 13 can be engaged with and disengaged from a hook 27 provided at the upper end of a hook arm 26 of the cargo handling device 3 to be described later. is there.

  A plurality of pairs (three pairs) of side stanchions 15 are provided symmetrically on the left and right side surfaces of the floor board 11 at intervals in the front-rear direction. These side stanchions 15 extend substantially vertically along both side surfaces of the floor board 11, and prevent the long object W such as wood loaded on the container body 2 from rolling down to the side. Further, a single central stanchion 19 is erected on the center axis LL in the vehicle width direction of the floor board 11 and in front of the center in the front-rear direction. The central stanchion 19 is within the width of the support column 12 in the vehicle width direction, and prevents the slender stacking of long objects W such as wood.

The front end of the left and right vertical frames 10 ₁ of subframe 10 of the container body 2, the front end surface of the floor plate 11 protrudes forward, the front end of the left and right vertical frames 10 _1, the integral engagement portion 14, respectively Provided. As shown in FIG. 2, the engaging portion 14 is formed in a long sheath shape in the front-rear direction with the front surface opened. When the container body 2 is loaded on the chassis 1, A locking hook 7 as an engaged portion fixed to the left and right of the front portion of the chassis 1 is fitted, and the front end of the container body 2 is appropriately secured and supported on the chassis 1.

  As shown in FIGS. 1, 4, and 5, brackets 9 are respectively fixed to the left and right of the rear end of the container body 2, and grounding rollers 16 and grounding sleds 17 made of casters are respectively attached to these brackets 9. It is supported. That is, the rotating shaft 16a of the ground roller 16 is rotatably supported on the bracket 9 with an axis perpendicular to the loading / unloading direction of the container body 2, and the ground sled 17 is supported on the bracket 9 by the ground roller. It is supported so as to be able to swing around a swinging shaft l7a coinciding with the 16 rotation shafts 16a. The lower part of the grounding roller 16 protrudes downward from the grounding surface of the grounding sled 17 through a window hole 17 b opened in the grounding sled 17. The center of gravity G of the grounding sled 17 is located almost directly below the swing shaft 17a. The grounding sled 17 is in a substantially horizontal state, that is, substantially parallel to the floor plate 11 of the container body 2 in its free state. Retained. The grounding surface of the grounding sled 17 is a flat surface, and a curved surface 17c that warps toward the rear end side is formed at the rear end portion.

  The grounding sled 17 may be held in a substantially horizontal state in a free state by a conventionally known horizontal holding means, or a curved surface 17c may be formed at the front end of the grounding sled 17.

  As will be described later, when the container main body 2 is tilted rearward and the lower end of the container is landed on the ground, the ground roller 16 and the ground sled 17 are both grounded. As the container body 2 is lowered, the grounding roller 16 is rotated. On the other hand, the grounding sled 17 swings back and forth and slides on the ground, so that the container body 2 can be smoothly lowered onto the ground. .

  The lower part of the grounding roller 16 protrudes downward through the window hole 17b of the grounding warp 17 so as to be grounded on the ground regardless of the swinging position of the grounding warp 17.

  As shown in FIGS. 6-8, the said cargo handling apparatus 3 is comprised so that the said container main body 2 may be dump-actuated or loaded and unloaded between the chassis 1 and the ground, and a base end part ( A dump arm 20 whose rear end) is pivotally supported 21 so as to be pivotable in the front-rear direction, and a base end (rear end) on the front end (front end) side of the dump arm 20 in the front-rear direction. A cargo handling arm 22 that is pivotally supported by a pivot 23, an intermediate portion of the cargo handling arm 22, and a lift cylinder 24 that is connected between the front portion of the chassis 1 are provided. The cargo handling arm 22 is configured by fitting a hook arm 26 having a hook 27 attached to a tip portion (upper end portion) and a lift arm 28 so as to be able to extend and contract each other. Are expanded and contracted by a slide cylinder 29 connected between them. And between the dump arm 20 and the cargo handling arm 22, there is provided a conventionally known securing means (not shown) for securing them in a straight line.

  As shown in FIGS. 1 to 3, when the cargo handling device 3 is installed on the chassis 1 of the cargo handling vehicle V and the container main body 2 is loaded on the chassis 1, the locking hook 7 on the chassis 1 side is The front portion of the container body 2 is firmly fixed on the chassis 1 by being fitted into the engagement portion 14 on the container body 2 side.

  The hook arm 26 of the cargo handling device 3 is in front of the column 12 of the container body 2, and the hook 27 at the upper end of the hook arm 26 is engaged with the engagement pin 13 at the tip of the column 12 of the container body 2. The container body 2 is stably supported on the chassis 1 and, as will be described later, can be dumped rearward or loaded / unloaded between the chassis 1 and the ground by the operation of the cargo handling device 3. And between the front surface of the container main body 2 and the rear surface of the fixed loading platform 4 described later, left and right openings 31 and 32 that are open to the outside are formed on the left and right sides of the column 12. Moreover, the container main body 2 can shorten the protrusion amount from the rear end of the cargo handling vehicle V by forming the full length of the front-back direction shorter than the full length of the chassis 1.

  The fixed carrier 4 is provided in front of the chassis 1 with the left and right openings 31 and 32 in front of the container body 2, and a floor plate 42 is mounted on a support 40 fixed to the front of the chassis 1. It is laid and formed in a rectangular shape that is long in the width direction (horizontal direction) in a plan view. Due to the support base 40, the upper surface of the floor plate 42 of the fixed carrier 4 is made to coincide with the upper surface of the floor plate 11 of the container body 2. A shielding wall 44 is erected on the front portion of the fixed carrier 4. The shielding wall 44 is formed in a channel shape in plan view so as to cover the front surface of the fixed cargo bed 4 and the front portions of the left and right side surfaces thereof, and covers the rear surface of the driver's seat C of the cargo handling vehicle V. In order to prevent the long object W loaded on the vehicle from coming into contact with the driver's seat C, and to align the front part of the long object W loaded on the fixed carrier 4 with the loading position. Helpful. A pair of side stanchions 15 are provided symmetrically and integrally in the middle part in the front-rear direction of the left and right side surfaces of the floor plate 42 of the fixed carrier 4, and the long object W loaded on the fixed carrier 4 is I try not to roll it down to the side.

  As shown in FIGS. 2 and 10, a control device 50 that controls the operation of the cargo handling device 3 is provided at an appropriate position in the driver's seat C of the cargo handling vehicle V. The control device 50 includes a main switch 51, a changeover switch 52, and an operation switch 53, and the operation switch 53 includes a dump switch 54 and an unloading switch 55. Input signals from these switch groups are input to the control device 50, and output signals from the control device 50 control the operation of the lift cylinder 24 and the slide cylinder 29 of the cargo handling device 3.

  In the flowchart of the control device 50 in FIG. 11, when the changeover switch 52 is switched to the “long side”, the cargo handling device 3 is not operated even if the operation switch 53 (the dump switch 54 and the unloading switch 55) is operated. In addition, when the changeover switch 52 is switched to the “normal side”, the cargo handling device 3 is controlled so that a normal operation is possible.

  Next, the operation of the first embodiment will be described.

  When the container main body 2 carries a load such as a short material other than the long long object W or a chip, the changeover switch 52 of the control device 50 is switched to the “normal side”.

(1) “When dumping container body 2 on chassis 1”
When the changeover switch 52 of the control device 50 is switched to the “normal side” and the dump switch 54 of the cargo handling device 3 is turned ON, the container body 2 is installed on the chassis 1 as shown in FIG. 3), the cargo on the container body 2 can be discharged to the ground. Specifically, the relative rotation of the arms 20 and 22 is restricted by a lashing operation of a lashing means (not shown) provided between the dump arm 20 and the cargo handling arm 22 to fix them in a straight line. When the lift cylinder 24 is extended in the tied state, the container body 2 in which the engagement pin 13 at the upper end of the support column 12 is engaged with the hook 27 at the upper end of the hook arm 26 is moved backward on the chassis 1. A load such as a short object or a chip (excluding a long object such as wood) loaded on the container main body 2 in a dumping state can be discharged to the rear of the cargo handling vehicle V. When the lift cylinder 24 is contracted, the container body 2 can be lowered and lowered onto the chassis 1.

(2) “When the container body 2 on the chassis 1 is lowered to the ground”
If the changeover switch 52 of the control device 50 is switched to the “normal side” and the unloading switch 55 of the cargo handling device 3 is turned ON, the container body 2 is unloaded between the chassis 1 and the ground, and the container body 2 It is possible to unload short objects and chips (except for long objects such as wood) loaded on the ground.

  As shown in FIG. 7, the hook arm 26 is horizontally moved to the rear side of the cargo handling vehicle V with respect to the lift arm 28 by the contraction operation of the slide cylinder 29, the lashing operation of the lashing means is released, and the dump arm 20 and the cargo handling are performed. When the lift cylinder 24 is extended in a state in which the arm 22 can be rotated relative to the arm 22, the cargo handling arm 22 including the lift arm 26 and the hook arm 28 rotates backward about the shaft support 23 point. Thereby, the container main body 2 moves backward on the chassis 1.

  According to the extension of the lift cylinder 24, the ground roller 16 and the ground sled 17 at the rear end of the container body 2 are grounded, and the ground roller 16 is rotated on the ground by the subsequent extension operation of the lift cylinder 24. The sled 17 slides on the ground while swinging so as to follow the ground, and the container body 2 tilts backward with the rotation shaft 16a of the ground roller 16 and the swing shaft 17a of the ground sled 17 as fulcrums.

  Thus, when the grounding sled 17 is grounded on the ground, it can swing freely around its swinging shaft 17a in response to the reaction force from the ground, so the place where the container body 2 is lowered is uneven ground, soft Even if it is rough or muddy ground such as the ground, the grounding surface of the grounding sled 17 can always be in surface contact with the ground by freely swinging so as to follow the ground. It is possible to secure a larger area in contact with the ground than line contact such as a cap and a roller, and it is possible to smoothly slide on the ground without being recessed into the ground.

  As shown in FIG. 8, when the lift cylinder 24 continues to extend, when the cargo handling arm 22 reaches the rearward rotation position, the hook arm 26 is directed downward and the container body 2 is lowered to the ground. When the hook 27 at the tip of the hook arm 26 is removed from the engagement pin 13, the container body 2 is separated from the cargo handling vehicle V, and the container body 2 can be smoothly attached and detached.

  The cargo (excluding long objects such as wood) can be loaded and unloaded between the container body 2 and the ground.

(3) “When loading container body 2 on the ground onto chassis 1”
The cargo handling vehicle V is stopped in tandem at an appropriate interval in front of the container body 2 that is wholesaled on the ground, and then the cargo handling arm 22 is fully rotated around the pivotal support 23 to the rearward rotation position. Similarly to the case where the hook 27 of the hook arm 26 is engaged with the engagement pin 13 of the support column 12 and the container arm 2 is lowered by the forward rotation of the cargo handling arm 22, the grounding roller 16 rolls on the ground, The grounding sled 17 slides smoothly on the ground, the container body 2 is loaded on the chassis 1 and moves forward on it, and the hook arm 26 moves to the front end position by the extension operation of the slide cylinder 29. As shown in FIGS. 1 and 2, the loading of the container body 2 into the cargo handling vehicle V is completed.

  As shown in FIGS. 1 and 2, the engaging portion 14 at the front end of the container body 2 is fitted into a locking hook 7 as an engaged portion on the chassis 1, and the front portion of the container body 1 is moved to the chassis 1. It can be secured and supported properly.

  The cargo handling vehicle V is capable of transporting long, long objects that are difficult to transport with conventional cargo handling vehicles.

  In the first embodiment, a long object W such as a long timber (3.6 m or more) to be processed into a square for construction is loaded and transported. In order to increase the transport amount of the container, it is possible to transport a plurality of long objects W in a state in which the long objects W are vertically arranged two by two, and to increase the transport amount. The storage space when the container body 2 is not used can be narrowed by setting the length in the front-rear direction of 2 short.

(4) “When transporting a long object W such as wood straddling the fixed carrier 4 on the chassis 1 and the container body 2”
In this case, the changeover switch 52 of the control device 50 in the driver's seat C switches to the “long side” and prohibits the operation of the cargo handling device 3.

  As shown in FIGS. 1 and 2 and a chain line, on the cargo handling vehicle V, a long object W (3.6 m) such as a plurality of timbers cut from a mountain straddling the fixed carrier 4 and the container body 2. 2) are stacked in the vertical direction. As shown in FIG. 9 (A), without depending on the cargo handling device 3, the long object W is pulled from a storage place on the ground by another cargo handling machine (not shown) such as a crane, and the rope R such as a rope. The plurality of long objects W are lined up two by two and loaded across the fixed carrier 4 and the container body 2. At this time, the side stanchion 15 prevents the long object W from rolling down and facilitates its loading. The central stanchion 19 prevents the long object W from being loaded obliquely on the chassis 1.

  A plurality of long objects W stacked in series in two across the fixed carrier 4 and the container body 2 are appropriately secured to the container body 2 by means of a rope such as a rope (not shown). Then, the cargo handling vehicle V loaded with a large number of long objects W is transported to a processing place for the long objects W.

  The long objects W may be stacked on the container body 2 without being lined up two by two.

(5) “When long items such as wood on the chassis 1 are wholesaled to the ground”
Also in this case, the changeover switch 52 of the control device 50 remains switched to the “long side”.

  As shown in FIG. 9 (B), the long object W transported to the destination by the traveling of the cargo handling vehicle V is not dependent on the operation of the cargo handling device 3, and the rope or the like is roped by another cargo handling machine such as a crane. It is lifted by the strip R and is wholesaled from the chassis 1 to the ground such as a processing plant.

  Next, a second embodiment of the present invention will be described with reference to FIG.

  In this second embodiment, the rocking shaft 17a of the grounding sled 17 is positioned behind the container body 2 relative to the rotating shaft 16a of the grounding roller 16, and the rocking shaft 17a and the rotating shaft 16a are The container body 2 is parallel to each other in the front-rear direction.

  According to the second embodiment, when the container main body 2 is tilted, the grounding sled 17 can be grounded in preference to the grounding roller 16, and depending on the state of the ground, the grounding roller 16 is not grounded or slightly touched. In particular, the container body 2 can be moved smoothly on uneven ground or muddy ground.

  Next, a third embodiment of the present invention will be described with reference to FIG.

  In the third embodiment, the rocking shaft 17a of the grounding sled 17 is located in front of the container body 2 with respect to the rotating shaft 16a of the grounding roller 16, and the rocking shaft 17a and the rotating shaft 16a are The container body 2 is parallel to each other in the front-rear direction.

  According to the third embodiment, when the container body 2 is tilted, the grounding roller 16 can be grounded in preference to the grounding sled 17, and the ground is leveled such as a paved ground, so that the container body 2 can be smoothly moved. It can be moved back and forth.

  Next, a fourth embodiment of the present invention will be described with reference to FIG.

  In the fourth embodiment, the center of gravity G of the grounding sled 17 is located in front of the swinging shaft 17a, and the rotating shaft 16a of the grounding roller 16 is connected to the swinging shaft 17a of the grounding sled 17. It is on the same axis.

  According to the fourth embodiment, the grounding sled 17 can be tilted rearward. When the container main body 2 is tilted, there is a large unevenness on the rough ground or the muddyness at the moment when the grounding sled 17 is grounded. However, the grounding sled 17 is less likely to get caught on uneven ground, and the container body 2 can be smoothly moved back and forth.

  In the fourth embodiment, the rotation shaft 16a of the ground roller 16 and the swing shaft 17a of the ground sled 17 do not have to coincide with each other.

  Although the first to fourth embodiments of the present invention have been described above, the present invention is not limited to these embodiments, and various embodiments are possible within the scope of the present invention.

  For example, the container may be a conventionally known container in addition to the container for long objects. The container can be loaded and unloaded by sliding a winch or an inclined frame (for example, Japanese Patent No. 3648075) or other conventionally known container loading / unloading means.

DESCRIPTION OF SYMBOLS 1 ..... chassis 2 ..... container main body 3 ...... cargo handling device 16 ..... grounding roller 16a ... ...... Rotating shaft 17 ... Grounding sled 17a ... Swing shaft V ... Cargo handling vehicle

Claims (2)

Mounted on the chassis (1) of the cargo handling vehicle (V) so as to be movable in the front-rear direction, and tilted rearward and downward between the chassis (1) and the ground by the cargo handling device (3) provided on the chassis (1). A container for a cargo handling vehicle that moves to ground while moving the lower part of the rear end to the ground,
The container includes a container body (2) on which a load can be loaded, and a groundable sled (17) and a grounding roller (16) are provided at a lower rear end of the container body (2). ) Can swing around a swing shaft (17a) having an axis in a direction perpendicular to the loading / unloading direction of the container body (2), and the ground roller (16) is parallel to the swing shaft (17a). A container for a cargo handling vehicle, characterized by being provided so as to be rotatable around a rotating shaft (16a).   The container for a cargo handling vehicle according to claim 1, wherein the swing shaft (17a) of the grounding sled (17) and the rotation shaft (16a) of the grounding roller (16) are made to coincide with each other.

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