JPH07285369A - Container handling vehicle - Google Patents

Abstract

PURPOSE:To improve reliability by fastening a dumping frame and a cargo frame with a fastening member prior to the container tilting action via the utilization of the expansion/shrinkage of an L-arm, and providing an inexpensive fastening device with a simple structure. CONSTITUTION:An L-arm 17 expanded or shrunk when a container is loaded or unloaded is provided on the tip side of a cargo frame 14 supported on a dumping frame 12 via a support section, and a fastening device 21 integrally fastening the dumping frame 12 to the cargo frame 14 is provided at the position separated from the support section to the rear of a car body. The fastening device 21 is provided with a fastening member 24 on the guide member 16 side, a fastened member 25 on the dumping frame 12 side, a fastening direction exciting spring 26 exciting the fastening member 24 in the fastening direction, and a fastening member contact piece 31 provided on the L-arm 17 and brought into contact with the fastening member 24 to move the fastening member 24 to the fastening release position against the exciting force of the fastening direction exciting spring at the time of shrinkage.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a container handling vehicle for loading and unloading or tilting a container mounted on an undercarriage, and more particularly to a measure for improving the reliability of tilting operation when tilting a container.

[0002]

2. Description of the Related Art Generally, a container-carrying vehicle has a dump frame pivotally supported at a rear end portion of a chassis so as to be tiltable rearward of a vehicle body, and is supported by the dump frame so as to be rotatable in a vehicle front-rear direction through a support portion. And a cargo handling frame having an L-shaped arm capable of expanding and contracting on the tip side, and rotating the cargo handling frame with respect to the dump frame in a state where the L-shaped arm is contracted and the container is moved backward on the chassis. While loading and unloading the container between the ground and the chassis, the container is tilted rearward on the chassis by tilting the cargo handling frame together with the dump frame while the L-shaped arm is extended. It is configured.

When the dump frame is tilted from the chassis, it is necessary to tilt both the dump frame and the cargo handling frame. Therefore, the dump frame and the cargo handling are separated from each other in the longitudinal direction of the vehicle body. A lashing device may be provided to lash the frame together. As such a lashing device, for example, as disclosed in Japanese Patent Publication No. 54-25684, the lashing device is pivotally supported at the rear end of the cargo handling frame and swings between a lashing position and a lashing release position. A securing member that is moved by the locking mechanism, a securing member that is provided at the front end of the dump frame, engages with the securing member at the securing position, and releases the engagement at the securing release position; A lashing direction urging member for urging the lashing member in the lashing direction, and the above-mentioned against the urging force of the lashing direction urging member which is provided in the chassis and when the dump frame is lying on the chassis. It is known that a lashing member is provided with a stopper that abuts on the lashing member so as to regulate the movement of the lashing member to the lashing position. Then, when the dump frame and the cargo handling frame are both floated (slightly tilted) through the container when the container is tilted so that the dump frame is tilted from the chassis, the contact of the stopper with the locking member is released, and the locking member is released. The urging member urges the lashing direction to the lashing position promptly, so that the dump frame is integrally lashed immediately after the container is tilted with respect to the cargo handling frame.

[0004]

However, in the above-mentioned conventional lashing device, the dump frame is fastened to the cargo handling frame immediately after the dump frame is tilted, but there is a time delay, so that the dump frame and the cargo handling frame are separated from each other. There may be a delay in lashing during the period. For this reason, there is a possibility that the securing member of the securing device and the secured device may not be engaged smoothly and reliably due to mutual interference, etc., and there is an unstable feeling in the engagement of both members, and the securing is reliable. You will be concerned about your sexuality.

Therefore, an expandable and contractible hydraulic cylinder associated with the securing member and a control means for expanding and contracting the hydraulic cylinder are provided to engage the securing member and the secured member, that is, the dump frame and the cargo handling frame. It is conceivable that the binding with and is performed prior to the tilting motion when the container is tilted. However, in this case, the lashing device is expensive and the structure is complicated.

The present invention has been made in view of the above points, and its object is to pay attention to the expansion and contraction movement of the L-shaped arm, and by utilizing the movement, the dump frame and the cargo handling frame by the lashing member. By making the lashing of the lashing unit and the container tilting motion precede the tilting operation of the container, the lashing device can be made inexpensive and the structure is simple, and the engagement between the lashing member and the locked member can be made smooth. And to ensure reliability by improving the reliability.

[0007]

[Means for Solving the Problems] To achieve the above object, the solution means provided by the invention according to claim 1 is a container-carrying vehicle, which is pivotally supported at the rear end of a chassis so as to be tiltable rearward of the vehicle body. A dump frame and a cargo handling frame that is rotatably supported by the dump frame in the front-rear direction of the vehicle body via a support portion and has an L-shaped arm that is extendable and retractable on the tip side are provided, and the L-shaped arm is contracted. With the container moving backward on the chassis, the cargo handling frame is rotated with respect to the dump frame to load and unload the container between the ground and the chassis, while the L-shaped arm remains extended and the cargo handling frame continues. It is assumed that the container is configured to be tilted rearward on the chassis by integrally tilting the container with the dump frame. Then, a lashing device that integrally lashes the dump frame and the cargo handling frame at a position separated from the support portion in the vehicle body front-rear direction is provided. The lashing device is provided on the cargo handling frame, moves between a lashing position and a lashing release position, and is attached to the dump frame, and is engaged with the lashing member at the lashing position. Together,
A secured member whose engagement is released at the securing release position, a securing direction biasing member for biasing the securing member in the securing direction, and the L-shaped arm. A lashing member contacting piece that abuts against the lashing member so as to move the lashing member to the lashing release position against the urging force of the lashing direction urging member at the time of contraction. is there.

[0008] The solving means taken by the invention of claim 2 is
The lashing member contacting piece of the invention according to claim 1 is specified, and the lashing member is provided so as to contact the lashing member via the connecting member when the lashing member is moved to the lashing release position. is there.

Further, the solution means taken by the invention of claim 3 specifies that an engaging device for engaging the dump frame of the invention of claim 1 with a chassis is provided, and the engaging device comprises: An engaging member that is provided on one of the chassis and the dump frame and that moves between an engaging position and an engaging position, and an engaging member that is provided on the other of the chassis and the dump frame and that engages with the engaging member. An engaged member that is engaged at the mating position and that is disengaged at the disengagement position; an engagement direction urging member that urges the engagement member in the engagement direction; It is provided on either one of the securing members of the securing device, and when the securing member is moved to the securing position, the engaging member is moved to the disengagement position against the biasing force of the engaging direction biasing member. A configuration including an engagement member abutment piece that abuts the securing member so as to move; Those were.

[0010]

With the above construction, in the invention according to claim 1,
When loading and unloading a container, by moving the L-shaped arm to a contracted state, the binding member contacting piece on the L-shaped arm side that moves rearward of the vehicle body as the L-shaped arm contracts and moves is fixed on the guide member side. A lashing member abutment piece that abuts on the lashing member and moves to the rear of the vehicle body in this abutting state moves the lashing member to the lashing release position against the urging force of the lashing direction urging member. To do. Therefore, the lashing member is separated from the lashed member on the dump frame side to enable rotation around the support portion of the cargo handling frame with respect to the dump frame, and the dump frame and the cargo handling frame are in the unlatched state. That is, it becomes a separated state. As a result, when the lift cylinder or the like is extended, only the cargo handling frame tilts, and the containers are loaded and unloaded between the ground and the chassis.

On the other hand, when the container is tilted, by holding the L-shaped arm in the extended state, the lashing member is not positioned at the lashing release position due to the contact with the lashing member contact piece, and the lashing member is fixed. The binding member is positioned at the binding position by the biasing force in the binding direction by the binding direction biasing member and engages with the locked member,
Rotation of the cargo handling frame around the support portion with respect to the dump frame is prohibited. Therefore, the dump frame and the cargo handling frame are in an integrally fixed state in which the rotation around the support portion is already prohibited during the tilting operation of extending the lift cylinder and the like to tilt the dump frame and the cargo handling frame. The tilting of the dump frame and the cargo handling frame causes the container to tilt on the chassis.

In addition, the dump frame and the cargo handling frame are the same as those in which the binding member delays and engages with the fastened member after the dump frame starts to float together with the cargo handling frame when the container is tilted. There is no delay in fastening between the two members, and the two members are smoothly and reliably engaged with each other without interfering with each other. Further, since the engagement of the securing member with the secured member is performed by the biasing force of the securing direction biasing spring that is interlocked with the extended state of the L-shaped arm, the hydraulic mechanism such as the hydraulic cylinder or the control unit is operated. This eliminates the need for the lashing device and makes the lashing device inexpensive and simple in construction.

According to the second aspect of the present invention, since the securing member contacting piece contacts the securing member via the connecting member, the securing member contacting piece expands and contracts as the L-shaped arm expands and contracts. It becomes possible to dispose the lashing member apart from the movement range, and the lashing member is attached to the cargo handling frame with a sufficient movement trajectory between the lashing position and the lashing release position. Easy to install.

Further, in the third aspect of the invention, when the containers are loaded and unloaded, the securing member is secured by the contact with the securing member contacting piece that moves rearward as the L-shaped arm contracts. It is positioned at the securing release position against the biasing force of the direction biasing member. Therefore, the contact between the securing member and the engaging member via the engaging member abutting piece is avoided, and the engaging member is moved to the engaging position by the urging force in the engaging direction by the engaging direction urging member. When the container is moved to the ground and the top of the chassis by the tilting motion around the support part of only the cargo handling frame in the unsecured state by the securing device, the chassis and the dump frame are engaged by the engaging device. It is smoothly loaded and unloaded in between.

On the other hand, when the container is tilted, the L-shaped arm held in the extended state avoids the contact between the securing member contacting piece and the securing member, and the securing member is biased in the securing direction. It will be positioned in the lashing position by the member. Therefore, the securing member and the engaging member come into contact with each other via the engaging member abutting piece, and the engaging member is disengaged against the urging force in the engaging direction by the engaging direction urging member. Move to position. As a result, when the container is tilted, the engagement between the chassis and the dump frame is released by the engagement device, and the tilting operation of the dump frame and the cargo handling frame in the integrally secured state by the above-mentioned securing device is disturbed. And the container is tilted smoothly on the chassis.

[0016]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 5 and 6 show the construction of a container-carrying vehicle 1 according to the first embodiment of the present invention. Reference numeral 2 denotes a frame-shaped chassis of the vehicle 1 connected to the rear of a driver's seat 3 and 4 denotes the frame. A sub-chassis provided on the chassis 2 and including the sub-chassis 4
A loading / unloading device 6 capable of loading / unloading the container 5 between the sub chassis 4 (chassis 2) and the ground is mounted on the top. An upper end of the rear surface of the container 5 is pivotally supported by an upper pivot 9, and a tailgate 7 that can be opened downward is formed. In addition, 8 is a main girder of the container 5.

The loading / unloading device 6 is pivotally supported at the rear end of the sub-chassis 4 so as to be tiltable rearward about a pivot 11, and is located on the rear part of the sub-chassis 4 and the dump frame 12. Of a substantially L-shaped cargo handling frame 14 connected to a support shaft 13 (supporting portion) extending horizontally in the vehicle width direction at the front of the cargo handling frame, and provided at the tip of the cargo handling frame 14 and It is provided with a hook 15 for carrying a container which engages with an engaging pin 5a provided on the upper end of the front surface in a detachable manner. Also,
The cargo handling frame 14 is a tubular guide member 16 extending forward in the horizontal direction from a base end (rear end) connected to the dump frame 12, and a substantially L-shaped guide member 16 slidably fitted in the guide member 16. The guide member 16 is provided with an L-shaped arm 17 having a V-shape, and a telescopic cylinder 18 that is expandable and contractable in cooperation with the guide member 16 and the L-shaped arm 17. The L-shaped arm 17 slides in the front-rear direction of the vehicle body. Further, a pair of left and right lift cylinders 19 and 19 are provided between a portion near the rear end of the guide member 16 (the cargo handling frame 14) and the front side position of the sub chassis 4 via pivots (not shown), respectively. Is rotatably supported. In addition, 20, 2
Reference numeral 0 denotes a guide roller for guiding the container, which is supported by a pivot 11 at the rear end of the sub chassis 4.

As a characteristic part of the present invention, as shown in FIGS. 1 to 4, between the dump frame 12 and the cargo handling frame 14, a dump is provided at a position separated from the support shaft 13 toward the front of the vehicle body. A pair of left and right fastening devices 21, 21 that integrally fasten the left and right front ends of the frame 12 and the rear portion of the guide member 16 of the cargo handling frame 14 are provided.

The lashing device 21 (only the left side of the vehicle body will be described because it has the same structure, and the right side of the vehicle body will be given only the reference numerals and the description thereof will be omitted) is the outer surface of the guide member 16. An upper end is pivotally supported at a rear position via a shaft 22, and a substantially C-shaped fastening portion 23 provided at a lower portion is rocked (moved) between a rear fastening position and a front fastening releasing position. ) And the tip end of the dump frame 12 are provided so as to extend in the vehicle width direction, and engage with the lashing portion 23 of the lashing member 24 at the lashing position, and at the lashing releasing position. The rod-shaped fixed member 25 to be disengaged, the guide member 16 located behind the shaft 22 and the rear surface of the fixing member 24 cooperate with each other to move the fixing member 24 to the fixing position. Energizing in the staking direction so that it moves, staking direction urging as a staking direction urging member And pulling 26, the guide member 1
Bracket 27 protruding outward from the front end position of the outer surface of 6
A substantially I-shaped swing arm 29 whose center is supported by a vertical shaft 28, and a connecting rod 30 which is linked between the outer end of the swing arm 29 and the center of the fastening member 24. The L-shaped arm 17 is provided so as to project outward from a substantially central position on the outer side surface of the L-shaped arm 17, and when the L-shaped arm 17 contracts, the securing member 24 is resisted against the biasing force of the securing direction biasing spring 26. There is provided a securing member contact piece 31 that contacts the inner end of the swing arm 29 so as to move to the securing release position.
The swing arm 29 swings so as to position the outer end portion in front of the vehicle body by contacting the inner end portion with the fastening member contact piece 31 that moves rearward in the vehicle body as the L-shaped arm 17 contracts. By the swinging of the swinging arm 29, the securing member 24 swings to the securing release position against the biasing force of the securing direction biasing spring 26 via the connecting rod 30. . On the other hand, in the swing arm 29, when the L-shaped arm 17 is in the extended state, the fastening member contact piece 31 does not contact the inner end portion, and the connecting rod 30 is positioned so that the outer end portion thereof is positioned rearward of the vehicle body. It is swung by the urging force of the lashing direction urging spring 26 acting via the urging force of the lashing direction urging spring 26. It is designed to rock. Further, the swinging arm 29 and the connecting rod 30 constitute a connecting member 32 for bringing the securing member 24 into contact with the securing member contact piece 31.

Next, an operation procedure for loading and unloading the container 5 between the sub chassis 4 and the ground and a tilting procedure for tilting the container 5 on the sub chassis 4 by the container handling vehicle 1 will be described with reference to FIGS. It will be described based on.

First, the container 5 is moved from the mounted state shown in FIG.
When the vehicle is lowered to the ground, the telescopic cylinder 18 is contracted to move the L-shaped arm 17 backward, so that the L-shaped arm 17 contracts (retracts) to move toward the rear of the vehicle body. The inner end of the swing arm 29 contacts the contact piece 31, and the swing arm 29 swings so as to position the outer end of the swing arm 29 toward the front of the vehicle body. By swinging the swing arm 29,
The connecting rod 30 moves to the front of the vehicle body, and the connecting rod 3
The securing member 24 is biased in the securing direction via the 0.
Swing to the lashing release position against the urging force of. As a result, the engagement between the securing member 24 and the secured member 25 is released, and the cargo handling frame 1 for the dump frame 12 is released.
4, the dump frame 12 and the cargo handling frame 14 are in the unlatched state, that is, the separated state, and when the lift cylinder 19 extends, only the cargo handling frame 14 tilts, and the container 5 moves. It slides on the guide roller 20 due to its own weight and is lowered to the ground as shown in FIG.

To mount the container 5 on the sub-chassis 4, the reverse operation of the above operation is performed.

On the other hand, when the container 5 is tilted from the state shown in FIG. 6, the retracting operation of the telescopic cylinder 18 is prohibited and the L-shaped arm 17 is held in the extended state, so that the securing member contacting piece 31. And the inner end portion of the swing arm 29 do not come into contact with each other, and the securing member 24 is fixed in the securing direction so that the swing arm 29 is held in the swing position with the outer end portion positioned rearward of the vehicle body. The urging force of the urging spring 26 positions it at the securing position and engages the secured member 25. The engagement between the securing member 24 and the secured member 25 allows the L-shaped arm 17 to continue the extension operation when the container 5 is mounted on the sub-chassis 4 described above and swings with the securing member contacting piece 31. This is performed when the contact with the inner end of the moving arm 29 is avoided. Then, due to the engagement of the securing member 24 and the secured member 25, the left and right front ends of the dump frame 12 are located at the front of the vehicle body with respect to the support shaft 13 between the dump frame 12 and the cargo handling frame 14. 14 is secured to the rear part of the guide member 16 by the securing device 21, and the support portion 1 of the cargo handling frame 14 to the dump frame 12 is secured.
Rotation of 3 turns is prohibited. As a result, the dump frame 12 and the cargo handling frame 14 are in an integrally fixed state during the tilting operation in which the lift cylinder 19 is extended to tilt the dump frame 12 and the cargo handling frame 14, and the dump frame as shown in FIG. By tilting the container 12 and the cargo handling frame 14 rearward around the pivot 11, the container 5 tilts on the chassis 2 to open the tailgate 7, and the contents in the container 5 are discharged.

In addition, the dump frame 12 and the cargo handling frame 14 and the dump handling frame 12 are engaged with the dump handling frame 12 such that the binding member delays and engages with the fastened member after the dump frame starts to float together with the cargo handling frame when the container is tilted. There is no delay in securing with the frame 14,
The securing member 24 and the secured member 25 are engaged with each other smoothly and surely without interfering with each other. As a result, the engagement of the two members 24, 25 can be made stable and the reliability can be improved.

Further, the member to be secured 2 of the securing member 24 is fixed.
Since the engagement with 5 is performed by the urging force of the urging direction urging spring 26 that interlocks with the extended state of the L-shaped arm 17, a hydraulic mechanism such as a hydraulic cylinder or control means is not required, and the lashing device is secured. 21 can be made inexpensive and simple in construction.

Further, since the securing member contacting piece 31 contacts the securing member 24 via the connecting member 32, it is outside the range of expansion / contraction movement of the securing member contacting piece 31 as the L-shaped arm 17 expands / contracts. It is possible to dispose the lashing member 24 at a distance from the guide member 16 in a state where the movement path between the lashing position and the lashing release position is sufficiently secured.
It can be easily mounted at the rear position on the outer surface of the.

Next, a second embodiment of the present invention will be described with reference to FIGS. 9 and 10.

In the second embodiment, a pair of left and right engaging devices are provided between the chassis and the dump frame so that the substantially central part of the dump frame is engaged with the rear part of the chassis.

That is, in this embodiment, FIG. 9 and FIG.
As shown in 0, in the engagement device 41 (only the left side of the vehicle body is shown in the drawing), a substantially middle portion is pivotally supported via the shaft 42 at the front end of the dump frame 12 located behind the secured member 25. A substantially hook-shaped engagement member 44 for swinging (moving) the substantially C-shaped engagement portion 43 provided at the lower portion between a rear engagement position and a front engagement release position, and the sub chassis. 4 is provided so as to horizontally project inward from the rear position of the inner side surface of 4,
A rod-shaped engaged member 45 that engages with the engaging member 44 at the engaging position and releases the engagement at the engaging position.
An engaging direction in which the front end portion of the dump frame 12 and a lower portion of the engaging member 44 are linked with each other and urge the engaging member 44 in the engaging direction so as to move the engaging portion 43 to the engaging position. Engaging direction urging spring 46 as an urging member and projectingly provided on the rear end surface of the lashing member 24 of the lashing device 21 so that the lashing direction can be changed when the lashing member 24 moves to the lashing position. A protrusion-shaped engaging member that abuts the fastening member 24 on the upper position of the front end surface of the engaging member 44 so as to swing the engaging member 44 to the disengagement position against the urging force of the urging spring 46. The contact piece 47 is provided. The rest of the configuration of the engagement device is the same as that of the first embodiment, and the same members and configurations are designated by the same reference numerals and their description is omitted.

Further, in the above embodiment, when the container 5 is lowered to the ground, the L-shaped arm 17 is contracted and moved by the contraction operation of the telescopic cylinder 18, so that the L
The lashing member contact piece 31 that moves rearward of the vehicle body as the mold arm 17 contracts moves causes the lashing member 24 to resist the urging force of the lashing direction urging spring 26 via the swing arm 29 and the connecting rod 30. And swing it to the lashing release position. Therefore, the contact between the engagement member contact piece 47 of the securing member 24 and the engagement member 44 is avoided, and the engagement member 44 is moved in the engagement direction by the engagement direction biasing spring 46 as shown in FIG. Oscillates to the engagement position by the urging force to the engaged member 45.
And the chassis 2 and the dump frame 12 are engaged by the engaging device 41, and the dump frame 12 is reliably prevented from rising when the containers are loaded and unloaded. As a result, the cargo handling frame 1 separated by the lashing device 21
Only the container 4 is tilted around the support portion 13 with respect to the dump frame 12, so that the container 5 is smoothly loaded and unloaded between the chassis 2 and the ground.

On the other hand, when tilting the container 5,
By prohibiting the contraction operation of the telescopic cylinder 18, the L-shaped arm 1
By stretching and holding 7, the lashing member 24 becomes the connecting member 3
Instead of being positioned at the securing release position by contact with the securing member contacting piece 31 via 2, the securing force is applied to the securing direction by the biasing force of the securing direction biasing spring 26 and positioned at the securing position. Engage the lashing member 25. Therefore,
As shown in 0, the engaging member contact piece 47 of the fastening member 24 contacts the upper position of the front end surface of the engaging member 44,
Is oscillated to the disengagement position against the urging force of the engagement direction urging spring 46 in the engagement direction, and the engaged member 45
Leave from. Thereby, the chassis 2 by the engagement device 41
And the dump frame 12 are disengaged, and the dump frame 12 is in an integrally secured state by the securing device 21.
The container 5 is smoothly tilted on the chassis 2 without disturbing the tilting operation of the cargo handling frame 14.

In this way, the fastening member 24 of the fastening device 21 is fixed.
Since the engaging member 44 of the engaging device 41 is positioned at the disengagement position or the engagement position in association with the lashing position or the lashing release position by the device, when the devices 21 and 41 load and unload the container and tilt the container. It is possible to reliably prevent a malfunction at the time and improve safety.

Next, modified examples of the above embodiments will be described.

FIG. 11 shows a first modified example, and in this first modified example, the structure of the fastening member is changed.

That is, in this modification, as shown in FIG. 11, the fastening device 51 includes a rail 52 provided on the outer surface of the guide member 16 and extending in the vehicle front-rear direction, and the rail 52.
A lashing member 54 which is slidably supported on the upper side and slides (moves) a substantially C-shaped lashing portion 53 having a notch on the rear surface between a rear lashing position and a front lashing releasing position. And a secured member 25 that extends the tip of the dump frame 12 in the vehicle width direction,
The shaft 5 protruding outward from the front end position of the outer surface of the guide member 16
The swing arm 29 supported on the
Between the lower end of the rocking arm and the front center position of the fastening member 54, and the corresponding position of the guide member 16 corresponding to the rear of the rocking arm 29 and the lower end of the rocking arm 29. And the L-shaped arm 17 and the lashing direction urging spring 55 that urges the lower end of the swing arm 29 rearward of the vehicle body so as to move the lashing member 54 to the lashing position.
The cargo handling frame 1 after projecting outward from the rear end of the outer surface of the
4 is provided on the outer side of the rocking member 4 and extends rearward, and a securing member contacting piece 56 that contacts the upper end of the swing arm 29 is provided. The rest of the configuration of the securing device is the same as that of the embodiment, and the same members and configurations are designated by the same reference numerals and the description thereof is omitted.

Also in this modification, when the container 5 is lowered to the ground, the L-shaped arm 17 is contracted and moved so that the L-shaped arm 17 contracts and moves to the rear of the vehicle body. The member contact piece 56 slides the securing member 54 through the swing arm 29 and the connecting rod 30 against the biasing force of the securing direction biasing spring 55 to the securing release position (two-dot chain line position). Let As a result, the securing member 44 is separated from the secured member 25, and the cargo handling frame 14 can be rotated around the support portion 13 with respect to the dump frame 12, and the dump frame 12 and the cargo handling frame 14 are separated. When the lift cylinder 19 extends, only the cargo handling frame 14 tilts, and the container 5
Are loaded and unloaded between the ground and the chassis 2.

On the other hand, when the container 5 is tilted,
By holding the L-shaped arm 17 in an extended state, the lashing member 54
Is not positioned at the lashing release position by contact with the lashing member abutment piece 56 via the connecting member 32, but is fixed at the lashing position by the urging force in the lashing direction by the lashing direction urging spring 55. The member to be bound 25 positioned at the solid line position)
And the cargo handling frame 1 with respect to the dump frame 12
The rotation around the support portion 13 of No. 4 is prohibited. Thereby, the dump frame 12 and the cargo handling frame 14
Is in an integrally tied state prior to the tilting motion of extending the lift cylinder 19 and tilting the dump frame 12 and the cargo handling frame 14, and the extension of the lift cylinder 19 tilts the container 5 on the chassis 2. .

FIG. 12 shows a second modified example. In this second modified example, the structure of the securing member contacting piece is changed.

That is, in this modified example, as shown in FIG. 12, the fastening device 61 has a center portion pivotally supported on the outer side surface of the guide member 16 via a shaft 62, and is provided at a lower portion of the rear surface of a substantially C-shape.
A securing member 64 that swings the character-shaped securing portion 63 between a rear securing position and a front securing release position, and a secured member 25 that extends the tip of the dump frame 12 in the vehicle width direction. , The front end of the front side of the securing member 64 is associated with the corresponding position of the guide member 16 in front of the securing member 64, and the securing member 64 is moved to the securing position. Binding direction urging spring 65 for urging the upper end of the vehicle toward the front of the vehicle body
And a lashing member that protrudes outward from the rear end of the outer surface of the L-shaped arm 17 and then extends outward of the cargo handling frame 14 toward the rear of the vehicle body and contacts the upper end position of the front end surface of the lashing member 64. The contact piece 66 is provided. The rest of the configuration of the securing device is the same as that of the embodiment, and the same members and configurations are designated by the same reference numerals and the description thereof is omitted.

Also in this modification, when the container 5 is lowered to the ground, the L-shaped arm 17 is contracted and moved so that the L-shaped arm 17 contracts and moves to the rear of the vehicle body. By the member contacting piece 66, the lashing member 6
4 is rocked to the lashing release position (two-dot chain line position) against the urging force of the lashing direction urging spring 65, and rotation of the cargo handling frame 14 around the support portion 13 with respect to the dump frame 12 is enabled. . As a result, the dump frame 1
2 and the cargo handling frame 14 are in a separated state, only the cargo handling frame 14 tilts when the lift cylinder 19 extends, and the container 5 is loaded and unloaded between the ground and the chassis 2.

On the other hand, when tilting the container 5,
By extending and holding the L-shaped arm 17, the fastening member 64
Is not positioned at the lashing release position by contact with the lashing member contact piece 66, and the lashing direction biasing spring 65 is
Secured position (solid line position) by urging force in the securement direction by
And is engaged with the to-be-secured member 25, and rotation of the cargo handling frame 14 around the support portion 13 with respect to the dump frame 12 is prohibited. Accordingly, the dump frame 12 and the cargo handling frame 14 extend the lift cylinder 19 to extend the dump frame 12 and the cargo handling frame 1.
An integrated securing state is obtained prior to the tilting motion of tilting the container 4, and the container 5 is tilted on the chassis 2 by the extension of the lift cylinder 19.

FIG. 13 shows a third modified example. In this third modified example, the configurations of the fastening member and the fastening member contacting piece are changed.

That is, in this modification, as shown in FIG. 13, the fastening device 71 includes a rail 70 provided on the outer side surface of the guide member 16 and extending in the vehicle front-rear direction, and the rail 70.
A lashing member 73 which is slidably supported on the upper side and slides a substantially C-shaped lashing portion 72, which is cut out in a substantially central portion of the front surface, between a lashing position at the front and a lashing release position at the rear. The fixed member 25 at the tip of the dump frame 12, the corresponding position of the guide member 16 corresponding to the front of the fixed member 73, and the fixed member 73.
And the L-shaped arm, which is linked with the lower position of the front end surface of the L-shaped arm and biases the fastening member 73 toward the front of the vehicle body so as to slide the fastening member 73 to the fastening position. A lashing member contacting piece 75, which projects outwardly from a substantially central position on the outer side surface of the lug 17, extends the outer side of the L-shaped arm 17 rearward of the vehicle body, and abuts on the upper position of the front end surface of the lashing member 73.
It has and. The rest of the configuration of the securing device is the same as that of the embodiment, and the same members and configurations are designated by the same reference numerals and the description thereof is omitted.

Also in this modified example, when the container 5 is lowered to the ground, the L-shaped arm 17 is contracted and moved so that the L-shaped arm 17 contracts and moves to the rear of the vehicle body. By the member abutment piece 75, the lashing member 7
3 is slid to the lashing release position (two-dot chain line position) against the urging force of the lashing direction urging spring 74, and rotation of the cargo handling frame 14 with respect to the dump frame 12 around the support portion 13 is enabled. . As a result, the dump frame 1
2 and the cargo handling frame 14 are in a separated state, only the cargo handling frame 14 tilts when the lift cylinder 19 extends, and the container 5 is loaded and unloaded between the ground and the chassis 2.

On the other hand, when tilting the container 5,
By extending and holding the L-shaped arm 17, the securing member 73
Is not positioned at the lashing release position by contact with the lashing member abutting piece 75, and the lashing direction biasing spring 74
Secured position (solid line position) by urging force in the securement direction by
And is engaged with the to-be-secured member 25, and rotation of the cargo handling frame 14 around the support portion 13 with respect to the dump frame 12 is prohibited. Accordingly, the dump frame 12 and the cargo handling frame 14 extend the lift cylinder 19 to extend the dump frame 12 and the cargo handling frame 1.
An integrated securing state is obtained prior to the tilting motion of tilting the container 4, and the container 5 is tilted on the chassis 2 by the extension of the lift cylinder 19.

FIG. 14 shows a fourth modified example. In this fourth modified example, the structure of the engaging member is changed so as to interlock with the sliding type fastening member.

That is, in this modified example, as shown in FIG. 14, as the fastening device 80, the rear position of the outer surface of the guide member 16 is slidably supported on the rail 82 extending in the vehicle front-rear direction. The securing member 81 is provided, and the securing member 81 is provided.
The swinging arm 29 and the connecting member 32, which make the substantially C-shaped lashing portion 83 notched on the rear surface thereof contact the lashing member contact piece 56 between the rear lashing position and the front lashing release position, are provided. What is made to slide through is used. Further, the engagement device 84 has a substantially intermediate portion pivotally supported via the shaft 42 at the front end of the dump frame 12 located behind the to-be-secured member 25, and has a substantially C-shaped engagement provided at the lower portion. Part 85
An engaging member 86 for swinging the lever between a rear engagement position and a front disengagement position, and an engaged member provided so as to horizontally project inward from a rear position of the inner surface of the sub-chassis 4. The member 45 is linked between the outer surface corresponding position of the dump frame 12 corresponding to the rear of the engaged member 45 and the lower rear end of the engaging member 86, and the engaging portion 43 is moved to the engaging position. The engaging direction biasing spring 87 for biasing the engaging member 86 in the engaging direction so as to cause the engaging member 86 to project rearward from the upper position of the rear surface of the securing member 81, and to the securing position of the securing member 81. Engaging member abutment piece 8 that abuts the upper position of the front end surface of the engaging member 86 and swings the engaging portion 85 to the disengagement position when the engaging member 86 swings.
8 and. The other configurations of the fastening device and the engaging member are the same as those in the embodiment, and the same members,
The same reference numerals are given to the components and the description thereof will be omitted.

Also in this modification, when the container 5 is lowered to the ground, the L-shaped arm 17 is contracted and moved so that the lashing member 81 slides to the lashing release position.
The engaging member abutting piece 88 of the securing member 81 and the engaging member 86
The contact with the engaged member 45 is prevented, and the engaging member 86 swings to the engaging position (the position indicated by the chain double-dashed line) by the urging force of the engaging direction urging spring 87 in the engaging direction to engage the engaged member 45. Then, the chassis 2 and the dump frame 12 are engaged by the engagement device 84. This reliably prevents the dump frame 12 from rising when the container is loaded and unloaded, and only the cargo handling frame 14 in the separated state due to the separation of the securing member 81 and the secured member 25 from the dump frame 12. The container 5 can be smoothly loaded / unloaded between the chassis 2 and the ground by tilting the supporter 13.

On the other hand, when tilting the container 5,
By extending and holding the L-shaped arm 17, the securing member 81 is positioned at the securing position and engages with the secured member 25.
Therefore, the engagement member abutment piece 88 abuts on the upper position of the front end surface of the engagement member 86, and the engagement member 86 is engaged against the urging force of the engagement direction urging spring 87 in the engagement direction. It swings to the uncoupling position (solid line position) and disengages from the engaged member 45. As a result, the engagement between the chassis 2 and the dump frame 12 by the engagement device 84 is released, and the dump frame 12 in an integrally secured state by the engagement between the securing member 81 and the secured member 25. The container 5 can be smoothly tilted on the chassis 2 without disturbing the tilting operation with the cargo handling frame 14.

The present invention is not limited to the above-described embodiments and modifications, but includes various modifications. For example, in each of the above-described embodiments and modifications, the lashing devices 21, 51, 61, 71, 80 are provided at positions separated from the support portion 13 in front of the vehicle body. It may be provided at a position spaced apart rearward.

Further, in each of the above embodiments and each modification,
The fastening direction biasing springs 26, 55, 65, 74 and the engagement direction biasing springs 46, 87 are used as the fastening direction biasing member and the engagement direction biasing member, respectively. Of course, it may be a biasing member. Moreover, in each of the above-described embodiments and the second modification, the securing direction biasing springs 26 and 65 or the engaging direction biasing spring 46 are provided between the guide member 16 or the horizontal arm and the securing member 24, or the dump frame 12. The front end of the engaging member and the lower portion of the engaging member 44, but is biased around the axis so that the securing member is biased in the securing direction or the engaging member, respectively. It may be a spring.

Further, in the second embodiment, the engaging member 4
4 is provided on the dump frame 12 and the engaged member 45 is provided on the sub-chassis 4, but the engaging member may be provided on the sub-chassis and the engaged member may be provided on the dump frame, respectively. . Further, in the second embodiment, the engaging member contact piece 47 is provided so as to project from the rear end surface of the fastening member 24. However, the engaging member contact piece is located at the upper position of the front end surface of the engaging member, that is, the fastening member. They may be provided at opposite positions.

[0054]

As described above, according to the container loading / unloading vehicle of the present invention, the lashing force of the lashing direction urging member interlocked with the expansion / contraction operation of the L-shaped arm is fixed when the L-shaped arm is extended and held. Since the member is engaged with the member to be secured and the dump frame and the cargo handling frame are integrally bound prior to the tilting operation when the container is tilted, the both members are provided between the dump frame and the cargo handling frame. It is possible to smoothly and surely secure the lashing in a state where there is no delay in the lashing, and it is possible to improve the reliability by giving a stable feeling to the engagement of both members. Moreover, a hydraulic mechanism such as a hydraulic cylinder or control means is not required for engaging the above-mentioned securing member with the secured member,
The securing device can be inexpensive and simple in construction.

According to the container loading / unloading vehicle of the second aspect of the invention, since the securing member contacting piece is brought into contact with the securing member via the connecting member, the expanding and contracting movement of the securing member contacting piece. By arranging the lashing members apart from the range, it is possible to easily attach the lashing members to the cargo handling frame while ensuring a sufficient movement trajectory of the lashing members.

Further, according to the container loading / unloading vehicle of the third aspect of the invention, the engaging member is brought to the disengagement position in association with the lashing operation of the lashing member when the container is tilted, and the lashing is performed when the container is unloaded. Since the engaging members are positioned at the engaging positions in conjunction with the operation of releasing the lashing of the members, malfunctions at the time of container loading and unloading and container tilting due to the mutual devices are reliably prevented, and safety is improved. Can be planned.

[Brief description of drawings]

FIG. 1 is a side view of a fastening device according to a first embodiment of the present invention as viewed from the side of a vehicle body.

FIG. 2 is a plan view of the fastening device viewed from above the vehicle body.

FIG. 3 is a rear view of the fastening device viewed from the rear of the vehicle body.

FIG. 4 is a front view of the fastening device viewed from the front of the vehicle body.

FIG. 5 is a plan view of the container loading / unloading vehicle.

FIG. 6 is a side view of the container handling vehicle with the container mounted therein.

FIG. 7 is a side view of the container loading / unloading vehicle showing a state in which the same container is being dropped onto the ground.

FIG. 8 is a side view of the container handling vehicle showing a state in which the container is tilted.

FIG. 9 is a side view of the engagement device according to the second embodiment when viewed from the side of the vehicle body in an engaged state.

FIG. 10 is a side view of the engagement device in a disengaged state as viewed from the side of the vehicle body.

FIG. 11 is a view corresponding to FIG. 1 according to a first modification.

FIG. 12 is a view corresponding to FIG. 1 according to a second modification.

FIG. 13 is a view corresponding to FIG. 1 according to a third modification.

FIG. 14 is a view corresponding to FIG. 1 according to a fourth modification.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Container cargo handling vehicle 2 Chassis 5 Container 12 Dump frame 13 Support part 14 Cargo handling frame 16 Guide member 17 L-shaped arm 21, 51, 61, 71, 80 Lashing device 24, 54, 64, 73, 81 Lashing member 25 Covered Lashing member 26, 55, 65, 74 Lashing direction urging spring (Lashing direction urging member) 31, 56, 66, 75 Lashing member contact piece 32 Coupling member 41, 84 Engaging device 44, 86 Mating member 45 Engaged member 46,87 Engaging direction biasing spring (engaging direction biasing member) 47,88 Engaging member abutting piece

Claims (3)

[Claims] 1. A dump frame pivotally supported at a rear end portion of a chassis so as to be tiltable rearward of a vehicle body, and supported by the dump frame so as to be rotatable in a vehicle front-rear direction through a support portion and extendable and retractable toward a front end side. A cargo handling frame having a possible L-shaped arm, and the cargo handling frame is rotated with respect to the dump frame in a state where the L-shaped arm is contracted and the container is moved backward on the chassis so that the container is on the ground and above the chassis. A container-carrying vehicle configured to tilt the container rearward on the chassis by tilting the cargo-handling frame together with the dump frame while the L-shaped arm is being extended and unloaded. A lashing device for integrally lashing the dump frame and the cargo handling frame at a position separated from the support portion in the vehicle body front-rear direction, and the lashing device is A securing member provided on the combination frame and moving between a securing position and a securing release position, and a securing frame provided on the dump frame, engaging the securing member at the securing position, and releasing the securing position. The member to be secured whose engagement is released by means of, the urging member for urging the urging member in the urging direction in the urging direction, and the L-shaped arm. A container cargo handling, comprising: a lashing member abutting piece that abuts the lashing member so as to move the lashing member to the lashing release position against the biasing force of the lashing direction biasing member. vehicle. 2. The container according to claim 1, wherein the securing member contacting piece is provided so as to contact the securing member via a connecting member when the securing member is moved to the securing release position. Cargo handling vehicle. 3. An engagement device for engaging the dump frame with a chassis is provided, wherein the engagement device is provided on one of the chassis and the dump frame, and the engagement position and the disengagement position are provided. And an engaged member that is provided on the other of the chassis and the dump frame and that engages with the engaging member at the engaging position and releases the engagement at the disengaging position. A member, an engagement direction urging member that urges the engagement member in the engagement direction, and one of the engagement member and the sizing member of the sizing device. An engaging member abutment piece that abuts the securing member so as to move the engaging member to the disengagement position against the biasing force of the engaging direction biasing member when moving to the binding position. The container handling vehicle according to claim 1.