JP2918786B2 - Container handling vehicle - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

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

[0002]

2. Description of the Related Art In general, a container cargo handling vehicle has a dump frame pivotally supported at the rear end of a chassis so as to be tiltable rearward of a vehicle body, and is supported by the dump frame via a supporting portion so as to be rotatable in the vehicle longitudinal direction. A cargo handling frame having an L-shaped arm that can be extended and retracted on the distal end side. 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. While loading and unloading the container between the ground and the undercarriage, the container is tilted rearward on the undercarriage 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 above the chassis, it is necessary to tilt the dump frame and the cargo handling frame together. Therefore, the dump frame and the cargo handling frame are separated from each other in the longitudinal direction of the vehicle body. A securing device that secures the frame integrally may be provided. 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 a cargo handling frame and swings between a lashing position and a lashing release position. A securing member which is provided at the front end of the dump frame, engages with the securing member at a securing position, and releases the engagement at a securing release position; A securing direction biasing member for biasing the binding member in the securing direction, and a securing direction biasing member provided on the undercarriage, against the urging force of the securing direction biasing member when the dump frame is lying down on the undercarriage. There has been known a device provided with a stopper which abuts on the securing member so as to restrict the movement of the securing member to the securing position. When the dump frame and the cargo handling frame are both lifted (slightly tilted) via the container during the tilting of the container in which the dump frame is tilted from above the chassis, the contact of the stopper with the securing member is released, and the securing member is released. Is quickly moved to the securing position by the securing direction urging member, so that the dump frame is integrally secured to the cargo handling frame immediately after the container tilts.

[0004]

However, in the above-mentioned conventional securing device, the dump frame is fastened to the cargo handling frame immediately after tilting of the dump frame, but with a time delay. May be delayed. For this reason, there is a possibility that engagement between the securing member of the securing device and the device to be secured cannot be performed smoothly and reliably due to mutual interference or the like. Sex is feared.

In view of this, a telescopic hydraulic cylinder linked to the securing member and a control means for expanding and contracting the hydraulic cylinder are provided, and the engagement between the securing member and the member to be secured, that is, the dump frame and the cargo handling frame are provided. May be performed prior to the tilting operation at the time of tilting the container. However, in this case, the securing device becomes expensive and its configuration becomes complicated.

The present invention has been made in view of the above points, and an object thereof is to pay attention to the expansion and contraction movement of the L-shaped arm, and utilize the movement to make use of the dump frame and the cargo handling frame by the securing member. Lashing is performed prior to the container tilting operation, so that the lashing device is inexpensive and simple in construction, and the engagement between the lashing member and the member to be lashed is smooth. The purpose is to improve the reliability by performing the operation reliably.

[0007]

Means for Solving the Problems To achieve the above object, a solution taken by the invention according to claim 1 is a container cargo handling vehicle 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 having an L-shaped arm that is rotatably supported in the vehicle body front-rear direction via a support portion and that can be extended and contracted at the tip end side. While the container is moved backward on the undercarriage, the cargo handling frame is rotated with respect to the dump frame to load and unload the container between the ground and the undercarriage, while the L-arm is in the extended state and the cargo handling frame is extended. It is assumed that the container is tilted backward on the chassis by tilting the container integrally with the dump frame. And a securing device is provided for securing the dump frame and the cargo handling frame integrally at a position separated from the support portion in the vehicle longitudinal direction. The securing device is provided on the cargo handling frame and moves between a securing position and a securing release position. The securing device is provided on the dump frame and engages with the securing member at the securing position. And
A securing member whose engagement is released at the securing release position, a securing direction urging member for biasing the securing member in the securing direction, and a securing direction urging member provided on the L-shaped arm; A securing member contacting piece that abuts against the securing member so as to move the securing member to the securing release position against the biasing force of the securing direction biasing member during contraction. is there.

[0008] The solution taken by the invention of claim 2 is as follows.
The securing member contact piece of the invention according to claim 1 is specified, and is provided so as to abut on the securing member via the connecting member when the securing member is moved to the securing release position. is there.

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

[0010]

According to the above-mentioned structure, according to the first aspect of the present invention,
When loading / unloading the container, the L-arm is moved to the contracted state, so that the L-arm-side securing member contacting piece which moves to the rear of the vehicle body with the contraction movement of the L-arm is fixed to the guide member side. The securing member abuts against the binding member and moves to the rear of the vehicle body in the abutting state, whereby the securing member moves to the securing release position against the urging force of the securing direction urging member. I do. For this reason, the securing member is separated from the secured member on the dump frame side to enable rotation of the cargo handling frame around the support portion with respect to the dump frame, so that the dump frame and the cargo handling frame are unlocked. That is, they are separated. Thus, when the lift cylinder or the like is extended, only the cargo handling frame is tilted, and the container is 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 securing member is not positioned at the securing release position due to the contact with the securing member abutting piece. It is positioned at the securing position by the urging force in the securing direction by the binding direction urging member and engages with the member to be secured,
Rotation of the cargo handling frame around the support portion with respect to the dump frame is prohibited. For this reason, the dump frame and the cargo handling frame are in an integrated securing 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 container tilts on the chassis due to the tilting of the dump frame and the cargo handling frame.

In addition, the dump frame and the cargo handling frame are similar to the dump frame and the cargo handling frame, such that the securing member is lately engaged with the secured member after the dump frame starts to float together with the cargo handling frame when the container is tilted. There is no locking delay between the two members, and the engagement of the two members is performed smoothly and reliably without interference with each other. Furthermore, since the engagement of the securing member with the secured member is performed by the urging force of the securing direction urging spring interlocking with the extension state of the L-shaped arm, a hydraulic mechanism such as a hydraulic cylinder or a control unit is used. This is unnecessary, and the securing device is inexpensive and simple in construction.

According to the second aspect of the present invention, since the securing member contact piece abuts on the securing member via the connecting member, the securing member abutment piece expands and contracts as the L-shaped arm moves. It is possible to dispose the securing member outside the moving range, and the securing member moves with respect to the cargo handling frame in a state where the movement trajectory between the securing position and the securing release position is sufficiently secured. And easy to install.

Further, according to the third aspect of the present invention, when loading / unloading the container, the securing member is secured by contact with the securing member abutting piece which moves rearward as the L-shaped arm is contracted. The lashing member is positioned at the securing release position against the urging force of the direction urging member. Therefore, abutment of the securing member and the engagement member via the engagement member abutting piece is avoided, and the engagement member is moved to the engagement position by the urging force in the engagement direction by the engagement direction urging member. The container and the dump frame are engaged by the engagement device, and the container is moved between the ground and the chassis by the tilting operation around the support portion of only the cargo handling frame in the unlocked state by the securing device. It is loaded and unloaded smoothly between.

On the other hand, when the container is tilted, the contact between the securing member contact piece and the securing member is avoided by the L-shaped arm held in the extended state, and the securing member is biased in the securing direction. The member will position the lashing position. Therefore, the securing member and the engaging member abut 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 the position. Thereby, when the container is tilted, the engagement between the underframe and the dump frame by the engagement device is released, and the tilting operation between the dump frame and the cargo handling frame, which are integrally locked by the locking device, is hindered. 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 structure of a container cargo handling vehicle 1 according to a first embodiment of the present invention, in which reference numeral 2 denotes a frame-shaped undercarriage of the vehicle 1 connected to the back of a driver's seat 3; A sub-chassis provided on the chassis 2;
On the upper side, a loading / unloading device 6 for loading / unloading the container 5 between the sub-chassis 4 (the chassis 2) and the ground is mounted. The rear surface of the container 5 is formed as a tail gate 7 whose upper end is pivotally supported by an upper pivot 9 and can be opened downward rearward. Reference numeral 8 denotes a main girder of the container 5.

The loading / unloading device 6 is supported at the rear end of the sub-chassis 4 so as to be tiltable rearward around a pivot 11, and a dump frame 12 located on a rear portion of the sub-chassis 4; And a substantially L-shaped cargo handling frame 14 connected to the front of the container 5 so as to be able to undulate around a support shaft 13 (supporting portion) extending horizontally in the vehicle width direction. A hook 15 for transporting the container, which is detachably engaged with the engaging pin 5a provided at the upper end of the front surface. Also,
The cargo handling frame 14 has 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 slidably fitted into the guide member 16. It has an L-shaped arm 17 having a U-shape, and an extendable telescopic cylinder 18 linked between the guide member 16 and the L-shaped arm 17. The L-shaped arm 17 slides in the vehicle longitudinal direction. Further, a pair of left and right lift cylinders 19, 19 is provided between a portion near the rear end of the guide member 16 (the cargo handling frame 14) and a front position of the sub-chassis 4 via pivots (not shown). Are rotatably supported. In addition, 20, 2
Reference numeral 0 denotes a guide roller for guiding the container, which is supported on the pivot 11 at the rear end of the sub-chassis 4.

As a characteristic feature of the present invention, as shown in FIGS. 1 to 4, between the dump frame 12 and the cargo handling frame 14, the dump truck is located at a position separated from the support shaft 13 in front of the vehicle body. A pair of left and right securing devices 21 and 21 for integrally securing 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 only the reference numeral of the right side of the vehicle body will be denoted by the reference numeral and description thereof will be omitted). The upper end is pivotally supported at a rear position via a shaft 22 and swings (moves) a substantially C-shaped securing portion 23 provided at a lower portion between a rear securing position and a front securing release position. And the tip of the dump frame 12 is provided extending in the vehicle width direction, engages with the securing portion 23 of the securing member 24 at the securing position, and at the securing release position, The rod-shaped member 25 to be disengaged is cooperated between the guide member 16 located behind the shaft 22 and the rear surface of the securing member 24, and the securing member 24 is moved to the securing position. Locking direction biasing as a locking direction biasing member that biases in the locking direction to move And pulling 26, the guide member 1
6, a bracket 27 protruding outward from the front end position of the outer surface.
A swing arm 29 having a central portion supported by a vertical shaft 28 via a vertical shaft 28, and a connecting rod 30 linked between an outer end of the swing arm 29 and the central portion of the securing member 24. And the outer surface of the L-shaped arm 17 is provided so as to protrude outward from a substantially central position thereof. And a securing member contacting piece 31 that abuts on the inner end of the swing arm 29 so as to move to the securing release position.
The swing arm 29 swings such that the outer end is positioned forward of the vehicle body by the inner end contacting a securing member contacting piece 31 that moves rearward with the contraction movement of the L-shaped arm 17. By the swing of the swing arm 29, the securing member 24 swings to the securing release position via the connecting rod 30 against the urging force of the securing direction urging spring 26. . On the other hand, when the L-shaped arm 17 is in the extended state, the rocking arm 29 does not allow the securing member contact piece 31 to contact the inner end, and positions the connecting rod 30 so that the outer end is positioned rearward of the vehicle body. Swinging by the urging force of the securing direction biasing spring 26 acting through the arm, and the securing member 24 is moved to the securing position by the swing of the swing arm 29 by the biasing force of the securing direction biasing spring 26. It swings. The swing arm 29 and the connecting rod 30 constitute a connecting member 32 that makes the securing member 24 abut against the securing member contact piece 31.

Next, an operation procedure for loading / 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 are shown in FIGS. It will be described based on.

First, 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 securing member moves rearward of the vehicle body with the contracted movement (retracted movement) of the L-shaped arm 17. The inner end of the swing arm 29 abuts on the contact piece 31, and the swing arm 29 swings so as to position the outer end forward of the vehicle body. By the swing of the swing arm 29,
The connecting rod 30 moves forward of the vehicle body, and the connecting rod 3
0, the securing member 24 is secured to the securing direction urging spring 26.
Swings to the release position. As a result, the engagement between the securing member 24 and the secured member 25 is released, and the cargo handling frame 1
4 and the dump frame 12 and the cargo handling frame 14 are released from the securing state, that is, separated from each other. When the lift cylinder 19 is extended, only the cargo handling frame 14 tilts, and the container 5 Due to its own weight, it slides on the guide roller 20 and descends to the ground as shown in FIG.

The mounting of the container 5 on the sub-chassis 4 is performed by performing an operation reverse to the above operation.

On the other hand, when the container 5 is tilted from the state shown in FIG. 6, the contraction operation of the telescopic cylinder 18 is prohibited, and the L-shaped arm 17 is held in the extended state. The securing member 24 has a securing direction so that the swing arm 29 is maintained at a swing position in which the outer end is positioned rearward of the vehicle body without contact between the swing arm 29 and the inner end of the swing arm 29. The urging spring 26 is positioned at the securing position by the urging force of the urging spring 26 and is engaged with the member 25 to be secured. The engagement between the securing member 24 and the secured member 25 causes the extension operation of the L-shaped arm 17 to continue when the container 5 is mounted on the sub-chassis 4 and swings with the securing member contact piece 31. This is performed when the contact with the inner end of the moving arm 29 is avoided. By the engagement between the securing member 24 and the secured member 25, the left and right front ends of the dump frame 12 are separated from the support shaft 13 between the dump frame 12 and the cargo handling frame 14 by the loading frame. 14 is secured to the rear of the guide member 16 by the securing device 21, and
Three turns are prohibited. As a result, the dump frame 12 and the cargo handling frame 14 are integrally secured during the tilting operation of extending the lift cylinder 19 to tilt the dump frame 12 and the cargo handling frame 14, and the dump frame as shown in FIG. The container 5 is tilted on the undercarriage 2 by tilting the container 12 and the cargo handling frame 14 backward about the pivot 11, the tailgate 7 is opened, and the contents in the container 5 are discharged.

In addition, the dump frame 12 and the cargo handling frame 14 are connected to the dump frame 12 by, for example, engaging with the member to be secured with a delay after the dump frame starts to float together with the cargo handling frame when the container is tilted. There is no lashing delay with the frame 14,
Engagement of the securing member 24 and the secured member 25 is performed smoothly and reliably without interfering with each other. As a result, the engagement between the two members 24 and 25 is given a sense of stability, and the reliability can be improved.

Further, the member to be secured 2 of the securing member 24
5 is performed by the urging force of the locking direction urging spring 26 interlocked with the extension state of the L-shaped arm 17, so that a hydraulic mechanism such as a hydraulic cylinder and control means is not required, and 21 can be inexpensive and simple in construction.

Further, since the securing member contact piece 31 abuts on the securing member 24 via the connecting member 32, the securing member contact piece 31 is out of the range of expansion and contraction movement of the L-shaped arm 17 as the L-arm 17 expands and contracts. The securing member 24 can be disposed at a distance from the securing member 24, and the securing member 24 can be secured to the guide member 16 with a sufficient movement trajectory between the securing position and the securing release position.
It can be easily mounted at the rear position on the outside surface of the vehicle.

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

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

That is, in this embodiment, FIGS.
As shown in FIG. 0, the engagement device 41 (only the left side of the vehicle body is shown in the figure) has a substantially intermediate portion pivotally supported at the front end of the dump frame 12 located behind the shackled member 25 via a shaft 42. A substantially hook-shaped engagement member 44 for swinging (moving) a substantially C-shaped engagement portion 43 provided at a lower portion between a rear engagement position and a front disengagement position; 4 is provided to protrude horizontally inward from the rear position of the inner surface,
A rod-shaped engaged member 45 that engages with the engaging member 44 at an engaging position and releases the engagement at the disengaging position;
An engagement direction which is linked between a front end of the dump frame 12 and a lower portion of the engagement member 44 and urges the engagement member 44 in the engagement direction so as to move the engagement portion 43 to the engagement position. An engaging direction urging spring 46 serving as an urging member is provided on the rear end face of the securing member 24 of the securing device 21 so as to move the securing direction when the securing member 24 moves to the securing position. A protruding engaging member that abuts the securing member 24 at a position above the front end face of the engaging member 44 so as to swing the engaging member 44 to the disengaged position against the urging force of the urging spring 46. And a contact piece 47. 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 denoted by the same reference numerals and description thereof will be omitted.

In the above embodiment, when the container 5 is dropped on the ground, the L-shaped arm 17 is contracted and moved by the contraction operation of the telescopic cylinder 18 so that the L-shaped arm 17 is moved.
The securing member contact piece 31 that moves rearward with the contraction movement of the mold arm 17 causes the securing member 24 to resist the urging force of the securing direction urging spring 26 via the swing arm 29 and the connecting rod 30. And rock it to the lashing release position. Therefore, the contact between the engaging member contacting piece 47 of the securing member 24 and the engaging member 44 is avoided, and the engaging member 44 is moved in the engaging direction by the engaging direction urging spring 46 as shown in FIG. Swinging to the engagement position by the urging force of
, And the chassis 2 and the dump frame 12 are engaged by the engagement device 41, thereby reliably preventing the dump frame 12 from lifting when loading and unloading containers. Thereby, the cargo handling frame 1 separated by the securing device 21
Only the container 4 is tilted around the support portion 13 with respect to the dump frame 12, and the container 5 is smoothly loaded and unloaded between the undercarriage 2 and the ground.

On the other hand, when the container 5 is tilted,
L-arm 1
7, the securing member 24 is connected to the connecting member 3.
The lashing member 26 is positioned at the securing position by the urging force in the securing direction by the securing direction biasing spring 26 without being positioned at the securing position by the contact with the securing member abutting piece 31 via the locking member 2. The locking member 25 is engaged. Therefore, FIG.
As shown in FIG. 0, the engaging member abutting piece 47 of the securing member 24 abuts on the upper position of the front end surface of the engaging member 44, and
Is swung to the disengaged position against the urging force in the engaging direction by the engaging direction urging spring 46, and the engaged member 45
Break away from Thereby, the chassis 2 by the engagement device 41
And the dump frame 12 are disengaged from each other, and the dump frame 12 is integrally secured by the securing device 21.
The container 5 is smoothly tilted on the chassis 2 without hindering the tilting operation of the container 5 and the cargo handling frame 14.

As described above, the securing member 24 of the securing device 21
The engaging member 44 of the engaging device 41 is positioned at the disengaging position or the engaging position in conjunction with the lashing position or the lashing releasing position, so that the containers 21 and 41 can load and unload the container and tilt the container. A malfunction at the time can be reliably prevented, and safety can be improved.

Next, modifications of the above embodiments will be described.

FIG. 11 shows a first modification, in which the structure of the securing member is changed.

That is, in this modified example, as shown in FIG. 11, a securing device 51 includes a rail 52 provided on the outer surface of the guide member 16 and extending in the vehicle front-rear direction.
A securing member 54 which is supported slidably forward and backward and which slides (moves) a substantially C-shaped securing portion 53 notched on a rear surface between a rear securing position and a front securing release position. And a shackled member 25 extending 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
And a swing arm 29 supported on the swing arm 29.
Between the lower end of the swinging arm 29 and the connecting rod 30 cooperating between the lower end of the locking member 54 and the lower end of the swinging arm 29. A locking direction biasing spring 55 for biasing the lower end of the swing arm 29 rearward of the vehicle body so as to move the securing member 54 to the securing position;
Cargo handling frame 1 after projecting outward from the rear end of the outer surface
4 and a securing member contact piece 56 that extends rearward and abuts on the upper end of the swing arm 29. The other configuration of the lashing device is the same as that of the embodiment, and the same members and configurations are denoted by the same reference numerals and description thereof is omitted.

Also, in this modified example, when the container 5 is to be dropped on the ground, the L-shaped arm 17 is contracted and moved to secure the rearward of the vehicle body with the contracted movement of the L-shaped arm 17. The securing member 54 is slid by the member contacting piece 56 via the swing arm 29 and the connecting rod 30 to the securing release position (the position indicated by the two-dot chain line) against the urging force of the securing direction urging spring 55. Let it. As a result, the securing member 44 is separated from the secured member 25, and the cargo handling frame 14 can rotate around the support portion 13 with respect to the dump frame 12, so that the dump frame 12 and the cargo handling frame 14 are separated. When the lift cylinder 19 is extended, 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 extending and holding the L-shaped arm 17, the securing member 54
Is not positioned at the securing release position by the contact with the securing member contacting piece 56 via the connecting member 32, and is secured by the securing direction biasing spring 55 in the securing direction (the securing position ( (The solid line position)
And the cargo handling frame 1 with respect to the dump frame 12
The rotation of the support member 4 around the support portion 13 is prohibited. Thereby, the dump frame 12 and the cargo handling frame 14
Before the tilting operation of tilting the dump frame 12 and the cargo handling frame 14 by extending the lift cylinder 19, the container 5 is tilted on the chassis 2 by the extension of the lift cylinder 19. .

FIG. 12 shows a second modification, in which the structure of the securing member contact piece is changed.

That is, in this modified example, as shown in FIG. 12, the lashing device 61 has a central portion pivotally supported on the outer surface of the guide member 16 via the shaft 62 and a substantially C-shaped member provided at the lower portion of the rear surface.
A securing member 64 for swinging the letter-shaped securing portion 63 between a rear securing position and a front securing release position, and a secured member 25 extending the tip of the dump frame 12 in the vehicle width direction. The securing member 64 is linked between the corresponding position of the guide member 16 corresponding to the front of the securing member 64 and the upper end of the front surface of the securing member 64 so as to move the securing member 64 to the securing position. Locking direction urging spring 65 for urging the upper end of the vehicle forward of the vehicle body
And a securing member extending outwardly from the rear end of the outer surface of the L-shaped arm 17 to the outside of the cargo handling frame 14 toward the rear of the vehicle body and abutting on the upper end of the front end surface of the securing member 64. And a contact piece 66. The other configuration of the lashing device is the same as that of the embodiment, and the same members and configurations are denoted by the same reference numerals and description thereof is omitted.

Also, in this modified example, when the container 5 is to be dropped on the ground, the L-shaped arm 17 is contracted and moved to secure the rearward of the vehicle body with the contracted movement of the L-shaped arm 17. The securing member 6 is formed by the member contact piece 66.
4 is pivoted to a securing release position (a position indicated by a two-dot chain line) against a biasing force of a securing direction biasing spring 65, thereby enabling the rotation of the cargo handling frame 14 around the support portion 13 with respect to the dump frame 12. . Thereby, the above-mentioned dump frame 1
2 and the cargo handling frame 14 are separated, and only the cargo handling frame 14 is tilted when the lift cylinder 19 is extended, and the container 5 is loaded and unloaded between the ground and the chassis 2.

On the other hand, when the container 5 is tilted,
By extending and holding the L-shaped arm 17, the securing member 64
The locking direction urging spring 65 is not positioned at the locking release position due to contact with the locking member contact piece 66.
Position (solid line position)
, And is engaged with the member 25 to be secured, so that the rotation of the cargo handling frame 14 around the support portion 13 with respect to the dump frame 12 is prohibited. As a result, the dump frame 12 and the cargo handling frame 14 extend the lift cylinder 19, thereby causing the dump frame 12 and the cargo handling frame 1 to extend.
An integrated securing state is obtained prior to the tilting operation 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 modification, in which the configurations of the securing member and the securing member contact piece are changed.

That is, in this modified example, as shown in FIG. 13, a securing device 71 includes a rail 70 provided on the outer surface of the guide member 16 and extending in the vehicle front-rear direction.
A securing member 73 that is slidably supported on the front and back and slides a substantially C-shaped securing portion 72 cut out at a substantially central portion of the front surface between a front securing position and a rear securing release position. The position of the securing member 25 at the tip of the dump frame 12, the corresponding position of the guide member 16 corresponding to the front of the securing member 73, and the securing member 73.
A securing direction biasing spring 74 urged forward of the vehicle body so as to slide the securing member 73 to the securing position, and the L-shaped arm A fixing member contact piece 75 extending outwardly from the approximate center of the outer surface of the outer surface of the L-shaped member 17 and extending outward of the L-shaped arm 17 toward the rear of the vehicle body and in contact with an upper position of the front end surface of the fixing member 73.
And The other configuration of the lashing device is the same as that of the embodiment, and the same members and configurations are denoted by the same reference numerals and description thereof is omitted.

Also, in this modified example, when the container 5 is dropped on the ground, the L-shaped arm 17 is contracted and moved, so that the L-shaped arm 17 is contracted and moved to the rear of the vehicle body. The securing member 7 is formed by the member contact piece 75.
3 is slid to a securing release position (a position indicated by a two-dot chain line) against the urging force of the securing direction urging spring 74, and the rotation of the cargo handling frame 14 around the support portion 13 with respect to the dump frame 12 is enabled. . Thereby, the above-mentioned dump frame 1
2 and the cargo handling frame 14 are separated, and only the cargo handling frame 14 is tilted when the lift cylinder 19 is extended, and the container 5 is loaded and unloaded between the ground and the chassis 2.

On the other hand, when the container 5 is tilted,
By extending and holding the L-shaped arm 17, the securing member 73 is provided.
The locking direction urging spring 74 is not positioned at the locking release position by contact with the locking member contact piece 75.
Position (solid line position)
, And is engaged with the member 25 to be secured, so that the rotation of the cargo handling frame 14 around the support portion 13 with respect to the dump frame 12 is prohibited. As a result, the dump frame 12 and the cargo handling frame 14 extend the lift cylinder 19, thereby causing the dump frame 12 and the cargo handling frame 1 to extend.
An integrated securing state is obtained prior to the tilting operation 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 modification. In the fourth modification, the structure of the engaging member is changed so as to interlock with the sliding type securing member.

That is, in this modification, as shown in FIG. 14, the lashing device 80 is supported at the rear portion of the outer surface of the guide member 16 on a rail 82 extending in the vehicle longitudinal direction so as to be slidable forward and backward. A securing member 81;
The rocking arm 29 and the connecting member 32 that contact the securing member contacting piece 56 between the rear securing position and the front securing release position by connecting the substantially C-shaped securing portion 83 cut out on the rear surface. What is made to slide through is used. The engagement device 84 has a substantially middle portion pivotally supported at the front end of the dump frame 12 located rearward of the shackled member 25 via the shaft 42, and a substantially C-shaped engagement provided at a lower portion. Part 85
An engagement member 86 for swinging the sub-chassis 4 between a rear engagement position and a front disengagement position, and an engaged member provided horizontally protruding inward from a rear position on the inner surface of the sub-chassis 4. The member 45 is moved between the position corresponding to the outer surface of the dump frame 12 corresponding to the rear of the engaged member 45 and the lower rear end of the engaging member 86 to move the engaging portion 43 to the engaging position. An engaging direction urging spring 87 for urging the engaging member 86 in the engaging direction so as to cause the engaging member 86 to protrude rearward from an upper rear surface position of the securing member 81 and move to the securing position of the securing member 81; Engaging member 8 which comes into contact with the upper position of the front end face of the engaging member 86 to swing the engaging portion 85 to the disengaged position when swinging.
8 is provided. Other configurations of the securing device and the engaging member are the same as those of the embodiment, and the same members,
The same components are denoted by the same reference numerals, and description thereof is omitted.

Also, in this modified example, when the container 5 is to be dropped on the ground, the securing member 81 slides to the securing release position by contracting and moving the L-shaped arm 17.
The engaging member contact piece 88 of the securing member 81 and the engaging member 86
The engagement member 86 is swung to the engagement position (the position indicated by the two-dot chain line) by the urging force of the engagement direction urging spring 87 in the engagement direction to engage the engaged member 45. In this case, the engagement between the chassis 2 and the dump frame 12 by the engagement device 84 is performed. As a result, it is possible to reliably prevent the dump frame 12 from being lifted when loading and unloading the container, and to move only the cargo handling frame 14 that is separated by the separation of the securing member 81 and the secured member 25 from the dump frame 12. The container 5 can be smoothly loaded and unloaded between the undercarriage 2 and the ground by tilting around the support portion 13.

On the other hand, when the container 5 is tilted,
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 contact piece 88 abuts on the upper position of the front end face of the engagement member 86, and the engagement member 86 engages against the urging force in the engagement direction by the engagement direction urging spring 87. It swings to the engagement release position (solid line position) and separates from the engaged member 45. As a result, the engagement between the undercarriage 2 and the dump frame 12 by the engagement device 84 is released, and the engagement between the securing member 81 and the secured member 25 causes the dump frame 12 to be integrally secured. The container 5 can be smoothly tilted on the chassis 2 without hindering the tilting operation with the cargo handling frame 14.

It should be noted that the present invention is not limited to the above embodiments and modifications, but encompasses various other modifications. For example, in each of the above-described embodiments and modifications, the securing devices 21, 51, 61, 71, and 80 are provided at positions further away in front of the vehicle body than the support portion 13, but the securing device is provided in the vehicle body more than the support portion. It may be provided at a position separated rearward.

In each of the above embodiments and modifications,
The securing direction urging springs 26, 55, 65 and 74 and the engaging direction urging springs 46 and 87 are used as the securing direction urging member and the engaging direction urging member, respectively. Needless to say, 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 moved between the guide member 16 or the horizontal arm and the securing member 24 or between the dump frame 12 and the horizontal frame. And the lower end of the engaging member 44, but the securing member is wound around the axis so that the securing member or the engaging member is biased in the engaging direction, respectively. It may be a spring.

Further, in the second embodiment, the engagement member 4
4 is provided on the dump frame 12, and the engaged member 45 is provided on the sub-chassis 4. However, it is needless to say that the engaging member may be provided on the sub-chassis and the engaged member may be provided on the dump frame. . Further, in the second embodiment, the engaging member contact piece 47 protrudes from the rear end face of the securing member 24. However, the engaging member contact piece is located at the upper position of the front end face of the engaging member, that is, It may be provided at the facing position.

[0054]

As described above, according to the container handling vehicle according to the first aspect of the present invention, the lashing force is exerted by the lashing direction urging member interlocked with the expansion and contraction operation of the L-shaped arm to secure the L-shaped arm when extended and held. Since the member is engaged with the member to be lashed and the dump frame and the cargo handling frame are integrally secured prior to the tilting operation at the time of tilting the container, the above-mentioned two members are placed between the dump frame and the cargo handling frame. Fastening can be performed smoothly and securely without a delay in securing, and the engagement between the two members can be given a sense of stability to improve reliability. In addition, there is no need for a hydraulic mechanism such as a hydraulic cylinder or control means for engaging the securing member with the securing member,
The securing device can be inexpensive and simple in construction.

According to the second aspect of the present invention, the securing member abutment piece is brought into contact with the securing member via the connecting member, so that the securing member abutment piece expands and contracts. By arranging the securing member outside the range, it is possible to easily attach the securing member to the cargo handling frame while sufficiently securing the movement trajectory of the securing member.

Further, according to the container handling vehicle of the third aspect, the engaging member is moved to the disengaged position in conjunction with the securing operation of the securing member when the container is tilted, and the container is secured when loading / unloading the container. Since the engaging members are positioned at the engaging positions in conjunction with the release operation of the members, it is possible to reliably prevent erroneous operations when loading and unloading containers and tilting the containers with each other, thereby improving safety. Can be planned.

[Brief description of the drawings]

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

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

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

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

FIG. 5 is a plan view of the container handling vehicle.

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

FIG. 7 is a side view of the container handling vehicle, showing a state where the container is being lowered to the ground.

FIG. 8 is a side view of the container cargo handling vehicle in a state where the container is tilted.

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

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 diagram corresponding to FIG. 1 according to a first modification;

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

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

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

[Explanation of symbols]

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

Claims (3)

(57) [Claims] 1. A dump frame pivotally supported at the rear end of a chassis so as to be tiltable rearward of a vehicle body, and supported by the dump frame via a supporting portion so as to be rotatable in the front-rear direction of the vehicle body. A cargo handling frame having a possible L-shaped arm, wherein the L-shaped arm is contracted to move the container backward with respect to the undercarriage, and the cargo handling frame is rotated with respect to the dump frame to move the container onto the ground and the undercarriage. And the container is tilted rearward on the undercarriage by tilting the cargo handling frame together with the dump frame while the L-shaped arm is extended while the container is being unloaded. A securing device for integrally securing the dump frame and the cargo handling frame at a position separated from the support portion in the vehicle longitudinal direction; and A securing member provided on the role frame and moving between the securing position and the securing release position; and a securing member provided on the dump frame, engaging with the securing member at the securing position, and securing the securing position. And a securing direction urging member for urging the securing member in the securing direction, and the securing member is provided on the L-shaped arm. And a securing member contact piece that abuts against the securing member so as to move the securing member to the securing release position against the biasing force of the binding direction biasing member. vehicle. 2. The container according to claim 1, wherein the securing member contact piece is provided so as to abut 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, the engagement device being provided on one of the chassis and the dump frame, and having an engagement position and a disengagement position. And an engaged member which is provided on the other of the undercarriage and the dump frame, engages the engaging member at an engaging position, and releases the engagement at the disengaging position. A member, an engaging direction urging member for urging the engaging member in the engaging direction, and one of the engaging member and the securing member of the securing device. An engagement member abutting piece that abuts the securing member so as to move the engagement member to the disengagement position against the urging force of the engagement direction urging member when moving to the binding position. The container handling vehicle according to claim 1.