JP3327620B2 - Cargo handling vehicle that detachably supports the container in a detachable manner - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cargo handling vehicle for supporting a container used for dust collection and the like detachably and dumpably.

[0002]

BACKGROUND OF THE INVENTION Cargo handling vehicles that removably and dumpably support containers are well known. The cargo handling vehicle has a chassis supporting the container, a swing frame pivotally supported at the rear end of the chassis and extending to the middle of the container forward of the chassis, and a swing frame extending from a front portion of the swing frame to a front end of the container forward of the chassis. An L-shaped arm comprising a first portion and a second portion extending perpendicularly to the first portion along the front surface of the container from the front end of the container and having a hook for fixing the container at the tip; A main cylinder having a piston rod that pushes up the first portion from the underside of the chassis, and the container is dumped by operating the main cylinder by integrally connecting the swing frame to the first portion of the L-shaped arm. ,
The container can be detached from the chassis by operating the main cylinder so that the swing frame is fixed to the chassis and the L-shaped arm rotates about the rear end of the first portion.

[0003]

In such a cargo handling vehicle, not only can the container be dumped, but also a full container can be removed from the undercarriage, and an empty container can be loaded and headed to the destination. It is frequently used in A conventional cargo handling vehicle that detachably supports and dumps a container includes a mechanism for connecting and removing an L-shaped arm and a swing frame when the vehicle is stopped and running, dumping, and attaching and detaching, a swing frame and a container. The mechanism for connecting and disconnecting the lower surface with the locking means and the mechanism for removing the locking means are separately provided, and the operation is somewhat complicated, and the configuration is also complicated.

Accordingly, an object of the present invention is to provide a loading and unloading vehicle having a mechanism that is simple to operate and has a simple structure, and that supports a container in a detachable and dumpable manner.

[0005]

According to the present invention, there is provided a chassis for supporting a container,
A swing frame pivotally supported at the rear end side of the chassis and extending halfway to the front of the chassis, a first portion extending from a front portion of the swing frame to a front end of the container forward of the chassis, and a first portion extending along the front surface of the container from the front end of the container. An L-shaped arm extending perpendicular to the portion and having a second portion having a hook for fixing the container at the tip, provided at the front of the chassis;
A main cylinder having a piston rod that pushes up a first part of the L-shaped arm from the front side of the chassis, and operating the main cylinder by integrally connecting the swing frame to the first part of the L-shaped arm. To dump the container, fix the swing frame to the chassis, and
A cargo handling vehicle that detachably and dumpably supports a container, wherein the container can be removed from a chassis by operating a main cylinder so that a mold arm rotates about a rear end of the first portion. First of L-arm
The rear end of the portion is pivotally supported at an intermediate position of the swing frame, and a front portion of the swing frame is provided between a position for engaging the locking means of the L-shaped arm and a position for engaging the locking means of the chassis. A movable slide member is mounted, and a lock arm that pivots between a position engaging with locking means on the bottom surface of the container and a position disengaging the locking means is mounted on a side surface of a rear portion of the swing frame. And the lock arm are connected to each other by a first rod extending from a slide member and a second rod extending from the lock arm, and an intermediate portion is rotatable on the side surface of the swing frame at the connection portion. One end of the supported link is pivotally supported, and the other end of the link is connected to the piston rod of a sub-cylinder provided at the rear of the chassis to rotate the link back and forth. When the vehicle is stopped and running and the container is dumped, the sub-cylinder is engaged with the locking means of the L-shaped arm and the locking arm is engaged with the locking means of the container. Rotates the link to the first position and the sub-cylinder moves the link to the second position so that when the container is attached or detached, the slide member engages the locking means of the chassis and the locking arm is released from the locking means of the container. The cargo handling vehicle is characterized in that the cargo handling vehicle is rotated.

According to the present invention, a lock arm used in the above-mentioned cargo handling vehicle, which turns so as to engage with a hook extending forward at a predetermined interval from a container bottom as locking means for the container bottom, The upper portion is engaged with the hook, and the lower portion is pivotally supported at one end of another support arm at two positions separated in the front-rear direction. The other end of each support arm extends above the lock arm and At a position further away from one end in the front-rear direction, the second rod is pivotally supported by the swing frame, and the second rod is connected between the pivot position of the support arm and the upper part of the lock arm. Thus, even if the lock arm is turned, the upper end thereof can move substantially parallel to the hook, and the engagement of the lock arm with the hook can be ensured.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. In the cargo handling vehicle 1 according to the present invention, the container 3 placed on the undercarriage 2 is in a stopped and running state shown in FIG.
And the detached state shown in FIG. Basically, these conditions are realized by a swing frame 7 pivotally supported by the shaft 5 of the roller 4 and extending to the front of the chassis to the middle of the container at the rear end side of the chassis, and a front portion of the swing frame 7. L-shaped part comprising a first portion 8 extending from the front of the container to the front end of the container and a hook 9 extending from the front end of the container along the front surface of the container 3 at right angles to the first portion 8 and fixing the container to the front end. Arm 11 and a piston rod 12 provided at the front of the chassis and pushing up the first portion 8 of the L-shaped arm 11 from the front of the chassis.
And a main cylinder 13 having the following. Thus, the swing frame 7 is integrally connected to the first portion 8 of the L-shaped arm 11 to operate the main cylinder 13 from the stopped and running state in FIG.
Dump the container 3 as shown in FIG. Further, the swing frame 7 is fixed to the chassis frame 15 and the L-shaped arm 11
By operating the main cylinder 13 so as to rotate about the shaft 16 at the rear end of the first portion 8, FIG.
Can be removed from the undercarriage 2.

A rod 17 is provided at the front upper end of the container 3 for engaging with the hook 9 of the second portion 10 of the L-shaped arm 11 to prevent the container 3 from coming off.
When the L-shaped arm 11 is further rotated rearward in the attaching / detaching operation and the hook 9 comes off the rod 17, the container 3 is removed from the chassis 2. The rollers 5 provided at the rear end of the chassis frame 15 facilitate the movement of the container 3 when the container 3 is detached. Also,
Rollers 18 are provided at the front and rear ends of the container 3 so that they can be moved independently after removal.
Further, a hook 19 is provided on the bottom surface of the container 3 and extends forward at a predetermined distance from the bottom surface of the container 3 in order to lock the vertical movement of the container 2. This hook also functions as a guide for proper placement when the container 3 is mounted.

The stop and running states shown in FIG. 1, the dump state shown in FIG. 2, and the detached state shown in FIG. 3 are respectively operated by a mechanism provided on the side surface of the swing frame 7 and serving as an important feature of the present invention. is there. Details of such a mechanism are shown in FIGS. 4 to 7, so please also refer to these drawings.
As shown in FIG. 4, a pair of swing frames 7 are provided inside the left and right chassis frames 15, 15. Also, the L-shaped arm 11 has a swing frame 7,
One is disposed at the center between the first part 7 and the piston rod 12 from the main cylinder 13 is connected to an intermediate position of the first part 8. A shaft 16 at the rear end of the first portion for rotatably attaching the L-shaped arm 11 to the swing frame 7 is provided at an intermediate position of the swing frame.

Referring also to FIG. 5, a pipe-shaped slide member 21 is provided at the front of the swing frame 7 so as to nest on the outside of the swing frame 7. An arm 23 having a locking hook 22 extends from the first portion 8 of the L-shaped arm 11 above the slide member 21. In addition, a lock gate 25 is provided on a horizontal frame 24 that extends between the chassis frames 15 on the front side of the swing frame 7.
The slide member 21 has a hook 2 for locking the L-shaped arm.
A lock pin 27 that engages with the second frame 2 is provided to protrude left and right, and in the engaged state, the swing frame 7 and the L-shaped arm 11 are integrally connected. The relationship between the lock hook 22 and the lock pin 27 is also shown in detail in FIG. The front end portion 28 of the slide member 21 is formed to be thin so as to enter and engage with the lock gate 25, and the engagement fixes the swing frame 7 to the chassis frame 15. Slide member 2
1 is a position where the lock pin 27 is engaged with the locking hook 22 of the L-shaped arm shown in FIGS. 4 and 5, and a position where the front end portion 28 is engaged with the lock gate 25 shown in FIG. It moves along the swing frame 7 between them.

A lock arm 30 is mounted on the side surface of the rear portion 29 of the swing frame 7 so as to pivot between a position where the hook 19 serving as locking means on the bottom surface of the container is engaged and a position where the hook 19 is released. . The slide member 21 and the lock arm 30 are connected to each other by a first rod 32 extending from the slide member 21 and a second rod 33 extending from the lock arm 30.
One end of each of links 35 and 36 whose intermediate portion is rotatably supported by a pin 34 provided on a side surface of the swing frame 7 is pivotally supported at the connection portion. The links 35 and 36 have slightly different shapes and are formed so as to be suitable for connecting the first rod and the second rod. However, since the functions are the same, the link 35 will be described as a representative in the following description. A horizontal rod 37 is passed to the other end (lower end) of the pair of links. A sub cylinder 39 is provided between the horizontal rod 37 and the rear of the chassis.
Is provided. More specifically, an end of the sub-cylinder 39 is pivotally supported by a horizontal frame 40 extending between the swing frames 7, 7, and a piston rod 41 extending from the sub-cylinder 39 is pivotally supported by the horizontal rod 37. Therefore, the operation of the sub cylinder 39 causes the piston rod 4
If 1 is in the extended state, as shown in FIGS. 4 and 5,
The link 35 is rotated to the first position so that the lock pin 27 of the slide member 21 engages with the lock hook 22 of the L-shaped arm and the lock arm 30 engages with the hook 19 of the container. And, as shown in FIG.
When the piston rod 41 is in a contracted state, the lock pin 27 of the slide member 21 is disengaged from the lock hook 22 of the L-shaped arm, and the front end 28 of the swing frame is disengaged.
Are engaged with the lock gate 25 and the lock arm 30 is disengaged from the hook 19 of the container.
Has been rotated to the second position.

Further, at the time of dumping the container 3 shown in FIG. 2, the lock pin 27 of the slide member 21 is kept engaged with the locking hook 22 of the L-shaped arm, and the L-shaped arm 11 and the swing frame 7 are held. Is provided on the side surface of the swing frame 7. The lock device 43 includes a hook 46 that rotates about a pivot point 45 so as to engage with a lock pin 44 provided at the rear end of the slide member 21, and moves the hook 46 between an engaged position and a disengaged position. A link 48 pivotally supported at a fulcrum 47 so as to rotate, and a spring 49 provided between the link 48 and the swing frame 7 to bias the hook 46 to a position where the hook 46 is engaged with the lock pin 44. The end 50 of the stopper 48 is provided with a stopper 51 provided on the chassis frame 15.
To come into contact with. By this contact, the hook 46 does not engage with the lock pin 44 as long as the swing frame 7 is in contact with the chassis frame 15. However, as shown in the dumping operation of FIG. 2, when the container 3 rises from the chassis 2 and the swing frame 7 moves away from the chassis frame 15, the hook 4 is biased by the spring 49.
Numeral 6 engages with the lock pin 44 to prevent the slide member 21 from moving, thereby maintaining a state in which the lock pin 27 of the slide member 21 is engaged with the locking hook 22 of the L-shaped arm.

The lock arm 30 which engages with the hook 19 on the bottom surface of the container 3 engages with the hook 19 by turning. Since the gap between the hook 19 and the bottom surface of the container is formed in a constant linear shape, simply turning the lock arm 30 does not allow it to enter the gap. If the lock arm is configured to slide in parallel, the engagement is easy, but the mechanism becomes complicated mechanically. Therefore,
In the present invention, a mechanism is provided for engaging the hook 30 in a substantially linear manner even when the lock arm 30 turns. Such a mechanism will be described in detail with reference to FIGS. The lower portion of the lock arm 30 is pivotally supported at one end of another support arm 55, 56 at two fulcrums 53, 54 separated in the front-rear direction of the chassis.
The other ends of 5, 56 extend above the lock arm and are pivotally supported by swing frame 7 at separate fulcrums 57, 58 located further away from one end of the support arm in the front-rear direction. The second rod 33 is connected to a fulcrum 58 of the support arm 56.
And the upper part of the lock arm. With this configuration, when the link 35 is rotated, the link moves as shown in FIG. 10, and the trajectory 60 of the movement of the upper end portion 59 of the lock arm 30 is substantially linear, and the lock arm 3
It can be seen that the hook 19 is easily engaged even with the turning of 0.

In the operation of the cargo handling vehicle 1 having such a configuration, first, in the stopped and running state, as shown in FIG. 1, the container 3 remains mounted on the chassis 2 and the sub cylinder 39, the link 35, The lock arm 30 and the slide member 21 are at the positions shown in FIG. Particularly, the lock arm 30 is engaged with the container bottom hook 19 to prevent the container 3 from swinging up and down.

Also during the dumping operation shown in FIG. 2, the sub cylinder 39, the link 35, the lock arm 30, and the slide member 21 are at the positions shown in FIG. Accordingly, the lock arm 30 is engaged with the hook 19, and the lock pin 27 of the slide member 21 is engaged with the lock hook 22 of the L-shaped arm, so that the L-shaped arm 11 and the swing frame 7 are integrally formed. Are linked. Then, when the main cylinder 13 is operated and the piston rod 12 is extended, the L-shaped arm 11 and the swing frame 7 which are integrally connected are connected.
Rotates around the shaft 5 to tilt or dump the container 3. When the container 3 is lifted from the chassis 2 by this dumping operation and the swing frame 7 is separated from the chassis frame 15, the hook 46 is engaged with the lock pin 44 by the urging of the spring 49 of the lock device 43, and the lock device 43 However, the movement of the slide member 21 is prevented, and the integral connection between the swing frame 7 and the L-shaped arm 11 is maintained. In order to lower the dump, the piston rod 12 of the main cylinder 13 may simply be contracted.

As shown in FIG. 3, when the container 3 is attached or detached, the piston rod 41 of the sub cylinder 39 is contracted, and the link 35 is rotated from the first position in FIG. 5 to the second position in FIG. As a result, the second rod 33 moves to pivot the lock arm 30 away from the hook 19, and the first rod 32 moves to move the slide member 21 forward along the swing frame 7. Then, the lock pin 27 of the slide member 21 is disengaged from the lock hook 22 of the L-shaped arm, and the front end 28 of the swing frame is engaged with the lock gate 25.
Therefore, the swing frame 7 is connected and fixed to the fixed chassis frame 15. In this state, when the main cylinder 13 is operated and the piston rod 12 is extended, only the L-shaped arm 11 rotates about the shaft 16 and the container 3 tilts while rotating the roller 4 to move rearward. Let me do. If the piston rod 12 is further extended as it is, the container 3 is moved more and more rearward while being inclined, and finally, the hook 9 of the L-shaped arm 11 is disengaged from the rod of the container 3 and the container 3 is moved to the chassis 2. From to the ground. The mounting of the container 3 may be performed in the reverse operation.

[0017]

According to the present invention, the front portion of the swing frame is lengthened and a slide member is provided to integrally connect the swing frame to the L-shaped arm during the dumping operation and to integrate the swing frame into the chassis frame during the detaching operation. In addition to the connection of the swing frame to the L-shaped arm and the chassis frame, it also locks and unlocks the hook on the bottom surface of the container with only one sub cylinder operation. Accordingly, a cargo handling vehicle that has a simple structure, can be easily operated, and can detachably and dumpably support the container is provided.

Further, according to the present invention, the lock arm
The lower portion is pivotally supported by different support arms at two positions separated in the front-rear direction, and the other end of each support arm extends above the lock arm and swings further away from the one end in the front-rear direction. Pivoted on the frame,
Since the second rod is connected between the pivotal position of the support arm and the upper part of the lock arm, even if the lock arm is turned, its upper end can enter and exit substantially linearly with respect to the hook. With a simple configuration, the engagement of the lock arm with the hook can be ensured.

[Brief description of the drawings]

FIG. 1 is a side view of a cargo handling vehicle according to the present invention in a stopped and running state.

FIG. 2 is a side view of the cargo handling vehicle according to the present invention in a dump operation state.

FIG. 3 is a side view of the cargo handling vehicle according to the present invention in a detached state.

FIG. 4 is a plan view of the chassis in a stopped and running state.

FIG. 5 is a side view of the chassis in a stopped and running state.

FIG. 6 is a side view of the chassis in a state before entering a detaching operation state.

FIG. 7 is a sectional view taken along line AA of FIG. 4;

FIG. 8 is an enlarged side view of a lock arm portion of the chassis.

9 is a side view of the lock arm as viewed from the left side in FIG.

FIG. 10 is a view showing a turning motion of a lock arm.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cargo handling vehicle 2 Undercarriage 3 Container 4 Roller 5 Shaft 7 Swing frame 8 First part of L-shaped arm 9 Hook 10 Second part of L-shaped arm 11 L-shaped arm 12 Piston rod 13 Main cylinder 15 Undercarriage frame 16 As pivot shaft Shaft 19 Container bottom hook 21 Slide member 22 Lock hook 25 Lock gate 27 Lock pin 28 Front part of slide member 30 Lock arm 32 First rod 33 Second rod 35 Link 39 Sub-cylinder 43 Lock device

Claims (2)

(57) [Claims] A swing frame pivotally supported at a rear end side of the chassis and extending partway forward of the chassis, and a swing frame extending from a front portion of the swing frame to a front end of the container forward of the chassis. An L-shaped arm comprising a first portion and a second portion extending perpendicularly to the first portion from the front end of the container along the front surface of the container and having a hook for fixing the container at the tip end;
A main cylinder having a piston rod that pushes up a first portion of the mold arm from the front side of the chassis, wherein the swing frame is integrally connected to the first portion of the L-shaped arm and the main cylinder is operated to operate the container. The container can be detached from the chassis by operating the main cylinder so that the swing frame is fixed to the chassis and the L-shaped arm rotates about the rear end of the first portion. In a cargo handling vehicle capable of supporting a container, a rear end of the first portion of the L-shaped arm is pivotally supported at an intermediate position of the swing frame, and a front portion of the swing frame is engaged with a locking means of the L-shaped arm. Between the mating position and the position engaging the locking means of the chassis.
And a lock arm that pivots between a position at which the locking means on the bottom surface of the container is engaged and a position at which the locking means is disengaged is attached to a side surface of the rear portion of the swing frame. The slide member and the lock arm are connected to a first member extending from the slide member.
Are connected to each other by a second rod extending from the lock arm, and the connecting portion pivotally supports one end of a link whose intermediate portion is rotatably supported on the side surface of the swing frame, The other end of the link is pivotally supported by a piston rod of a sub-cylinder that is provided at the rear of the chassis and rotates the link back and forth. When the vehicle stops and runs and the container is dumped, the slide member is the L-shaped arm. The sub-cylinder rotates the link to the first position so as to engage with the locking means and the locking arm engages with the locking means of the container, and when the container is attached or detached, the slide member engages with the locking means of the chassis. And the locking arm is disengaged from the locking means of the container.
Sub cylinder rotates the link in the second position, Su
At the position adjacent to the slide member on the side of the
When the tena is dumped, the slide member locks the L-shaped arm.
B lock operates to maintain a to engage the click means
A lock device is provided on the side of the swing frame,
The lock device locks the container when the container leaves the chassis.
A cargo-handling vehicle configured to perform a rocking operation . Wherein Oite the handling vehicle according to claim 1, before
Locking means of the serial container bottom is a hook extending forwardly of the chassis at regular intervals with the container bottom, the top of the <br/> lock arm is engaged with the hook, and the lower part in the front-rear direction The pivot arm is pivotally supported by one end of another support arm at two separate positions, and the other end of each support arm extends above the lock arm and is pivotally supported by the swing frame at a position further away from the one end in the front-rear direction. And the second
A cargo handling vehicle, wherein the rod is connected between a pivot position of the support arm and an upper portion of the lock arm.