JP2003002107A - Container loading/unloading apparatus for cargo handling vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a container 3 and loading platform 2 to be engaged with each other in conjunction with loading/unloading of the container 3, in a container loading/unloading apparatus of a cargo handling vehicle, and consequently, to reduce a cost. SOLUTION: There are provided: hooking parts 15 provided at a rear end part of a swing frame 6, having an engaging surface 15 extending in a long direction of the swing frame 6, and opened backward; and a container engaging means having a guide pin 16 arranged so as to extend in a vehicle width direction at the bottom rear end of the container and engaged with the engaging surface 15a of the hooking part 15 in the state that the container 3 is placed on the loading platform 2.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technical field of a container attaching / detaching device for a cargo handling vehicle that detachably supports a container.

[0002]

2. Description of the Related Art Conventionally, a cargo handling vehicle that detachably mounts and supports a container on a chassis on the rear side of the vehicle and transports the container is well known. On the chassis of such a cargo handling vehicle, for example, an L-shaped arm having a hook portion at the tip is swingably supported, while the L-shaped arm is provided on the vehicle front side of the container.
A rod or the like engageable with the hook portion of the die arm is integrally provided, and the container is fixedly supported and mounted on the chassis while being engaged with the hook portion of the L-shaped arm by the rod. . Then, in a cargo handling vehicle having a small container loading capacity, for example, about 1 ton, when the container is attached or detached, the L-shaped arm is rotated without sliding to the rear of the vehicle while the rod is engaged with the hook portion. The container is suspended from the L-shaped arm and is attached to and detached from the chassis while being guided by a guide roller at the rear end of the chassis.

By the way, in such a cargo handling vehicle, the container is locked and fixed to the chassis in order to prevent the loaded container from shaking and shaking in the vertical direction during traveling.

For example, as disclosed in Japanese Patent Laid-Open No. 6-305355, a lock arm rotatably supported at the center of the chassis and a drive connection to the lock arm via a rod are known. While an actuator such as a hydraulic cylinder is provided, a hook is provided on the bottom surface on the container side, and the lock arm is rotated by the operation of the actuator after the container is placed on the chassis, and the lock arm and the hook on the bottom surface of the container There has been proposed a container attaching / detaching device that locks and fixes the container on the chassis by engaging the.

[0005]

However, in the above-mentioned proposal, it is necessary to separately provide an auxiliary device such as an actuator for the purpose of locking and fixing the container to the chassis.
There is a problem of high cost. Further, since the structure of the device becomes complicated, it is inevitable that many failures occur.

Further, when the container and the chassis are automatically engaged with each other when the container is attached and detached, it is necessary to detect the attachment and detachment of the container and control the actuator to operate accordingly. The problems of cost increase and complication become more remarkable.

The present invention has been made in view of the above points, and an object of the present invention is to devise a structure of a container attaching / detaching device of a cargo handling vehicle so that the container and the chassis can be connected to each other with a simple structure. The purpose of this is to make it possible to engage in conjunction with the attachment and detachment of and to reduce the cost.

[0008]

In order to achieve the above object, according to the present invention, a container engaging means for engaging and fixing a container on the chassis by a sliding operation of a container mounted on the rear end of the chassis. I was prepared.

Specifically, in the first aspect of the invention, a first frame having a rear end rotatably supported by a rear end of the chassis via a first horizontal rotation shaft, and the first frame. A second frame rotatably supported by a front end portion of the frame via a horizontal second rotation shaft and having a hook portion for engaging and supporting the container on the front end side, and drivingly connected to the second frame. When the container is attached or detached, the container is attached to or detached from the chassis while the container is slid in the front-rear direction by rotating only the second frame around the second rotation axis by the drive unit. The container attaching / detaching device of the cargo handling vehicle is premised on that the driving means rotates the second frame together with the first frame about the first rotation axis to put the container in a dump state.
Further, when the container is slid forward in association with mounting, a container engaging means is provided for engaging and fixing the bottom rear end of the container to the rear end of the first frame by the sliding operation. And

With the above construction, since the container bottom is contacted and supported by the rear end of the first frame during the attaching / detaching operation and does not fluctuate in the vertical direction, the container engaging means moves forward of the container itself when the container is mounted. The bottom rear end of the container can be automatically engaged and fixed to the rear end of the first frame by the sliding movement of. Therefore, it is not necessary to separately provide an auxiliary device such as an actuator for the purpose of engaging and fixing the container bottom portion and the first frame. Therefore, the structure of the device can be simplified, and the cost can be reduced. Furthermore, since the configuration is simple, it is possible to reduce the occurrence of failures.

According to a second aspect of the present invention, in the container attaching / detaching device of the first aspect of the present invention, the container engaging means is provided at the rear end of the first frame and extends along the longitudinal direction of the first frame. A rearwardly opening claw portion having an extending engagement surface and a bottom rear end of the container are disposed so as to extend in the vehicle width direction and engage with the engagement surface of the claw portion when the container is mounted on the chassis. And a guide pin.

With the above construction, it is possible to specifically obtain a desirable container engaging means. That is, regardless of the vertical engagement state between the engaging surface of the claw portion and the guide pin,
The guide pin can be removed from the engaging surface of the claw portion without interfering with the sliding movement of the container in the backward direction accompanying the detachment. Similarly, when the container is mounted in the opposite manner, the guide pin can be locked to the engaging surface by sliding the container in the forward direction.

According to the third aspect of the present invention, a frame is rotatably supported by the chassis via a horizontal rotation shaft and has a hook portion at the front end side for engaging and supporting the container, and a drive connection to the frame. When the container is attached / detached, the frame is rotated around the rotation axis by the driving means to slide the container in the front / rear direction so that the container is attached / detached to / from the chassis. Is the premise. When the container is slid forward along with the mounting, the container engaging means for engaging and fixing the bottom rear end of the container to the rear end of the chassis is provided by the sliding operation. .

With the above construction, since the bottom of the container is contacted and supported by the rear end of the chassis during the attaching / detaching operation and does not fluctuate in the vertical direction, the container engaging means slides in the forward direction of the container itself when the container is mounted. The movement allows the bottom rear end of the container to be automatically engaged and fixed to the rear end of the chassis. Therefore, similarly to the invention of claim 1, there is no need to separately provide an auxiliary device such as an actuator for the purpose of engaging and fixing the container bottom portion and the chassis, so that the structure of the device is simplified and the cost is reduced. be able to.

According to a fourth aspect of the present invention, in the container attaching / detaching apparatus of the second aspect of the present invention, the container engaging means has an engaging surface provided at a rear end portion of the chassis and extending along the front-rear direction of the chassis. A rearwardly-opened claw portion, and a guide pin that is disposed at the bottom rear end of the container so as to extend in the vehicle width direction and that engages with the engagement surface of the claw portion when the container is mounted on the chassis. Prepare As a result, the desired container engaging means can be specifically obtained as in the case of the second aspect of the invention.

According to a fifth aspect of the invention, in the container attaching / detaching device of the second aspect of the present invention, the rear end of the chassis is
The container is provided with a guide roller on which the bottom surface of the container is placed and rolls, and the guide pin is positioned on a reference line that extends vertically upward through the center of the guide roller in an engaged state with the claw portion.

That is, the locus of the guide pin when the container is attached and detached is a substantially arcuate shape that is displaced upward along the front and rear of the reference line, so that the guide pin is temporarily positioned at a predetermined position on the vehicle front side of the reference line. In that case, a gap is created between the guide pin and the engaging surface of the claw at the predetermined position, which causes a problem of rattling of the container during traveling of the vehicle. On the other hand, if the guide pin is positioned rearward of the vehicle with respect to the reference line, the engagement surface of the claw portion will project rearward, so that the engagement surface and the container bottom portion will be separated when the container is attached or detached. There is a problem of interference. Therefore, by adopting the structure of claim 5, the rattling of the container during traveling and the interference of the claw portion and the container bottom portion when the container is attached and detached are respectively prevented, and the container is securely and smoothly mounted. Can be tied to.

[0018]

1 to 5 show a container attaching / detaching device for a cargo handling vehicle according to an embodiment of the present invention. As shown in FIG. 1, a vehicle body 2 is fixedly arranged at a rear portion of the cargo handling vehicle 1. The vehicle body 2 is detachably provided and has, for example, a bottomed box shape opened upward. The container 3 is placed and fixed.

As shown in FIG. 2, the rear end of the chassis 2 is rotatably supported by a first rotary shaft 5 extending horizontally, that is, in the vehicle width direction. Then, the swing frame 6, which is the first frame, has a rear end portion at the rear end portion of the chassis 2.
It is rotatably supported via a rotary shaft 5. The rear end of the chassis 2 has an axis parallel to the first rotating shaft 5,
Guide roller 13 that rolls by placing the bottom surface of the container 3
Is rotatably supported.

In this embodiment, two swing frames 6 and 6 are provided in parallel with each other at a predetermined interval, and the first rotating shaft 5 is provided at the front ends of the swing frames 6 and 6. Similarly, the second rotating shaft 7 extending in the horizontal direction is rotatably supported. The rear end of the L-shaped arm 8 that is the second frame is rotatably supported by the front ends of the swing frames 6 and 6 via the second rotation shaft 7.

The L-shaped arm 8 has a first portion 8a extending from a substantially central portion of the chassis 2 to the front of the chassis to the front end of the container in the container mounted state shown in FIG. The second portion 8b extends orthogonally to the portion 8a. A hook portion 9 for engaging and supporting the container 3 is provided at the front end side of the L-shaped arm 8, that is, at the tip end of the second portion 8b.

On the other hand, a rod-shaped rod 3a that engages with the hook portion 9 is fixedly provided on the upper front side of the container 3, and the container 3 has an L-shaped arm 8 by the engagement of the rod 3a and the hook portion 9. It is engaged with and supported by the hook portion 9 of. Auxiliary rollers 4 and 4 having a horizontal axis are rotatably supported on both sides in the vehicle width direction at the lower rear end of the container 3.

Further, a hydraulic cylinder 10 as a driving means is drivingly connected to the central portion of the first portion 8a of the L-shaped arm 8. Specifically, the hydraulic cylinder 10 has a base 2 at the chassis 2.
A cylinder 10a that is rotatably supported by a piston, and a piston 10 that is extensible on the tip side of the cylinder 10a.
b, and the tip of this piston 10b is
It is rotatably connected and supported at the center of the portion 8a.

Also, the swing frame 6 and the L-shaped arm 8
A lock device (not shown) that fixes and holds both the swing frame 6 and the L-shaped arm 8 integrally is disposed in the connecting portion with.

Then, as shown in FIG. 3, when the container 3 in the container tilt state is dumped, a lock device (not shown) is operated to lock the L-shaped arm 8 and the swing frame 6 into one body. Then, the L-shaped arm 8 is integrally rotated with the swing frame 6 by the hydraulic cylinder 10 so as to rotate around the first rotation shaft 5 to put the container in a dump state.

On the other hand, as shown in FIG. 4, when the container 3 is attached or detached, a lock device (not shown) is released to operate the L
In a state where the mold arm 8 and the swing frame 6 are independent, only the L-shaped arm 8 is rotated around the second rotation shaft 7 by the hydraulic cylinder 10 to slide the container 3 in the front-rear direction and to be mounted on and removed from the chassis 2. It is designed to do.

As a feature of the present invention, as shown in FIG. 5 by enlarging the main part, when the container 3 slides forward in association with mounting, the sliding movement of the container 3 causes the bottom rear end of the container 3 to move. The swing frame 6 is provided with a container engaging means for engaging and fixing the rear end of the swing frame 6.

This container engaging means is provided at the rear end of the swing frame 6 and has a rearwardly open claw portion 15 having an engaging surface 15a extending along the length direction of the swing frame 6, and the container 3. A guide pin 16 is provided at the rear end of the bottom portion of the claw portion 15 so as to extend in the vehicle width direction and engages with the engagement surface 15a of the claw portion 15 when the container 3 is mounted on the chassis 2.

Specifically, as shown in FIG. 2, the claw portion 1
Reference numeral 5 has two plate members facing each other with a predetermined gap. Then, as shown in FIG. 5, each plate member is joined to the swing frame 6 at the base end side to be integrated, while the tip end side is extended substantially vertically upward with respect to the length direction of the swing frame 6. The standing portion 15b provided and the engaging surface 15 extending rearward from the tip of the standing portion 15b.
a and. The engaging surface 15a that faces the swing frame 6, the rear portion of the standing portion 15b, and the upper surface of the swing frame 6 define a recess that opens rearward. The engagement surface 15a is a flat surface that is horizontal when the container is mounted.

The guide pin 16 is fixedly provided on a bracket which is disposed on the bottom surface of the container and extends downward. The guide pin 16 is engaged with the claw portion 15 in the guide roller 13.
Is located on a reference line L that passes through the center of and extends vertically upward. At this time, the guide pin 16 is in contact with the engagement surface 15a of the claw portion 15.

Next, the operation of the container attaching / detaching device of the cargo handling vehicle according to this embodiment will be described. When dumping the container 3, in the mounted state of the container 3 shown in FIG. 1, the lock device (not shown) provided at the connecting portion between the swing frame 6 and the L-shaped arm 8 is locked to operate the L-shaped arm. 8 and the swing frame 6 are integrated. Then, as shown in FIG. 3, the hydraulic cylinder 10 is extended to rotate the L-shaped arm 8 and the swing frame 6 upward about the first rotation shaft 5.

At this time, the container 3 is supported by the engagement between the rod 3a on the upper front side of the container 3 and the hook portion 9 of the L-shaped arm 8, while being supported by the engagement between the claw portion 15 and the guide pin 16. Therefore, the container 3 is dumped while being fixed to the swing frame 6 and the L-shaped arm 8.

On the other hand, when the container 3 is attached and detached, when the container 3 is first detached, in the mounted state of the container 3 shown in FIG. 1, the locking device (not shown) is released to swing the L-shaped arm 8 and the swing. The frame 6 is set to be independent. Then, as shown in FIG. 4, when the hydraulic cylinder 10 is extended, L
Only the mold arm 8 is rotated upward together with the container 3 around the second rotation shaft 7.

At this time, the container 3 is supported by the engagement between the rod 3a on the upper front side of the container 3 and the hook portion 9 of the L-shaped arm 8, while the engagement between the claw portion 15 and the guide pin 16 is released. Then, as the hydraulic cylinder 10 extends, the container 3 slides backward on the rolling guide roller 13.

That is, as shown in FIG. 5, with respect to the claw portion 15 which is fixedly arranged on the vehicle body together with the swing frame 6 and is open to the rear, the guide pin 16 moves from the engagement position with the claw portion 15 to the container. Since it moves monotonically downward along an arcuate locus along with the three bottom portions, the engagement between the claw portions 15 and the guide pins 16 is released by the backward movement of the container 3.

After that, the auxiliary roller 4 is brought into contact with the ground behind the vehicle, and the container 3 is guided by this auxiliary roller to be separated from the ground. Further, when the container 3 is mounted, the container 3 is mounted by the operation reverse to the above.

At that time, since the bottom of the container 3 is contacted and supported by the guide roller 13 at the rear end of the swing frame 6 during the attaching / detaching operation and does not fluctuate in the vertical direction, the container engaging means is used when the container 3 is mounted. By sliding itself in the front direction, the bottom rear end of the container 3 can be automatically engaged and fixed to the rear end of the swing frame 6.

That is, irrespective of the vertically engaged state of the engaging surface 15a of the claw portion 15 and the guide pin 16, the claw portion 15 is moved by the backward sliding movement of the container 3 accompanying the separation.
It is possible to remove the guide pin 13 from the engaging surface 15a without interfering with it. Similarly, when the container 3 is mounted on the opposite side, the guide pin 13 can be locked to the engagement surface 15a by sliding the container 3 in the forward direction.

Therefore, it is not necessary to separately provide an auxiliary device such as an actuator for the purpose of engaging and fixing the bottom portion of the container 3 and the swing frame 6. Therefore, the structure of the device can be simplified, and the cost can be reduced. Furthermore, since the configuration is simple, it is possible to reduce the occurrence of failures.

That is, since the locus of the guide pin 16 when the container 3 is attached and detached is a substantially arcuate shape that is displaced upwards in the front and rear of the reference line L, the guide pin 16 is tentatively moved toward the vehicle front side from the reference line L. When the container 3 is positioned at the predetermined position, a gap is generated between the guide pin 16 and the engaging surface 15a of the claw portion 15 at the predetermined position, which causes rattling of the container 3 while the vehicle is traveling. I will end up. On the other hand, if
When the guide pin 16 is positioned on the rear side of the vehicle with respect to the reference line L, the engaging surface 15a of the claw portion 15 is provided so as to project rearward.
5a comes into contact with the bottom of the container 3. Therefore, as in the present embodiment, by positioning the guide pin 16 on the reference line L that passes through the center of the guide roller 13 and extends vertically upward in the state of being engaged with the claw portion 15, the container 3 in which the vehicle is traveling. It is possible to prevent rattling and interference between the claw portion 15 and the bottom of the container 3 when the container 3 is attached and detached, and the container 3 can be securely and smoothly fastened to the chassis 2.

-Modification- Next, a modification of the above-described embodiment will be described (note that the same parts as those in the above-mentioned embodiment are designated by the same reference numerals,
Its detailed description is omitted). In the above embodiment, the L-shaped arm 8 is provided for attaching and detaching the container 3, while the swing frame 6 is provided for dumping the container 3, whereas in the present modification,
Of the swing frame 6 and the L-shaped arm 8, only the L-shaped arm 8 is provided so as to be applied to a cargo handling vehicle having only a container attaching / detaching function.

That is, in this modification, the L-shaped arm 8
Is rotatably supported on the chassis 2 via a horizontal rotary shaft 7, and a hydraulic cylinder 10 is drivingly connected to the L-shaped arm 8 as in the above embodiment. And
The container 3 is engaged with and supported by the hook portion 9 of the L-shaped arm 8, and when the container 3 is attached or detached, the container 3 is moved by the hydraulic cylinder 10.
The mold arm 8 is rotated around the rotary shaft 7 to slide the container 3 in the front-rear direction and to be attached to and detached from the chassis 2.

When the container 3 slides in the forward direction as it is mounted, the sliding operation causes the bottom rear end of the container 3 to engage and be fixed to the rear end of the chassis 2. Equipped with a matching means.

That is, the container engaging means has the engaging surface 15a extending along the front-rear direction of the chassis 2 and has the claw portion 15 opened rearward, as in the above embodiment. In the modified example, the claw portion 15 is provided at the rear end portion of the chassis 2. Then, similarly to the above-described embodiment, the container 3 is disposed at the bottom rear end of the container 3 so as to extend in the vehicle width direction,
The engagement surface 1 of the claw portion 15 when the container 3 is mounted on the chassis 2.
And a guide pin 16 that engages with 5a. Further, the guide pin 16 is positioned on the reference line L which extends vertically upward through the center of the guide roller 13 in the engaged state with the claw portion 15.

With the above configuration, the container attaching / detaching device of the cargo handling vehicle according to the present modified example operates in the same manner as the container attaching / detaching operation in the above-described embodiment by operating the hydraulic cylinder 10.

At this time, the bottom of the container 3 is contacted and supported by the guide roller 13 at the rear end of the chassis 2 during the attaching / detaching operation and does not fluctuate in the vertical direction. The bottom rear end of the container 3 can be engaged and fixed to the rear end of the chassis 2 by the sliding movement in the front direction. Therefore, similarly to the above-described embodiment, it is not necessary to separately provide an auxiliary device such as an actuator for the purpose of engaging and fixing the bottom portion of the container 3 and the chassis 2. Therefore, the structure of the device can be simplified and the cost can be reduced. You can

In the above embodiment and its modification, the container engaging means is engaged with the claw portion 15 provided at the rear end of the swing frame 6 or the chassis 2 and opened rearward, and the claw portion on the bottom surface of the rear portion of the container. Guide pin 16 provided to fit
However, the present invention is not limited to this. That is, conversely, a claw portion that opens forward may be provided on the bottom surface of the rear part of the container, while a guide pin may be provided at the rear end of the swing frame 6 or the chassis 2 so as to be engageable with the claw portion. Further, with another configuration, the bottom rear end of the container 3 may be engaged and fixed to the swing frame 6 or the rear end of the chassis 2 by sliding forward in mounting the container.

[0048]

As described above, according to the first aspect of the invention, the rear end portion is rotatably supported by the rear end portion of the chassis through the first horizontal rotating shaft. , A second frame which is rotatably supported on the front end of the first frame via a horizontal second rotation shaft, and has a hook part for engaging and supporting the container on the front end side, and driven by the second frame Equipped with a driving means connected, when attaching and detaching the container,
The drive means rotates only the second frame around the second rotation axis to slide the container in the front-rear direction while attaching / detaching to / from the chassis, while at the time of dumping, the second means is driven by the drive means.
Regarding a container attaching / detaching device of a cargo handling vehicle in which a frame is integrated with a first frame and is rotated about a first rotation axis to put a container in a dump state, the container is slid forward along with mounting. An actuator or the like is sometimes provided for the purpose of engaging and fixing the container bottom and the first frame by providing container engaging means for engaging and fixing the bottom rear end of the container to the rear end of the first frame by the sliding operation. Since it is not necessary to separately provide an accessory device of, the structure of the device can be simplified. Further, it is possible to reduce the cost and reduce the occurrence of failures.

According to the second aspect of the present invention, the container engaging means is provided at the rear end of the first frame and has a rearward opening claw having an engaging surface extending along the longitudinal direction of the first frame. And a guide pin that is disposed at the rear end of the bottom of the container so as to extend in the vehicle width direction and that engages with the engagement surface of the claw when the container is mounted on the chassis, thereby engaging the claw. Regardless of the vertically locked state of the surface and the guide pin, the guide pin can be removed from the engagement surface of the claw portion without interfering with the sliding movement of the container in the rearward direction due to the separation.

According to the third aspect of the present invention, the frame is rotatably supported by the chassis via the horizontal rotation shaft, and has a hook portion on the front end side for engaging and supporting the container.
When the container is attached and detached, the container is attached and detached to and from the chassis while the container is slid in the front-rear direction by rotating the frame around the rotation axis by the driving means when attaching and detaching the container. The apparatus is provided with a container engaging means for engaging and fixing the bottom rear end of the container to the rear end of the chassis by the sliding movement of the container when the container is slid forward as it is mounted. Since it is not necessary to separately provide an auxiliary device such as an actuator for the purpose of engaging and fixing and, it is possible to reduce the cost by simplifying the structure of the device.

According to the fifth aspect of the present invention, the rear end portion of the chassis is provided with a guide roller on which the bottom surface of the container is placed and rolls, and the guide pin is provided at the center of the guide roller in the engagement state with the claw portion. By positioning on the reference line that passes through and vertically upwards, the container can be securely and smoothly placed on the chassis while preventing rattling of the container while the vehicle is running and interference between the claw and the bottom of the container when attaching and detaching the container. Can be tied up.

[Brief description of drawings]

FIG. 1 is a side view showing a cargo handling vehicle including an attachment / detachment device according to an embodiment of the present invention.

FIG. 2 is a plan view showing an attachment / detachment device for a cargo handling vehicle.

FIG. 3 is a view corresponding to FIG. 1 showing a dumped state of a cargo handling vehicle.

FIG. 4 is a view corresponding to FIG. 1 showing a detached state of the cargo handling vehicle.

FIG. 5 is an enlarged side view showing a claw portion and a guide pin at a rear end of the vehicle in an enlarged manner.

[Explanation of symbols]

L reference line 1 cargo handling vehicle 2 chassis 3 containers 5 First rotating shaft 6 Swing frame (first frame) 7 Second rotating shaft (rotating shaft) 8 L-shaped arm (2nd frame, frame) 9 Hook part 10 Hydraulic cylinder (driving means) 13 Guide roller 15 Claws (container engaging means) 15a engaging surface 16 guide pins (container engaging means)

Claims (5)

[Claims] 1. The rear end of the vehicle has a first horizontal direction at the rear end of the chassis.
A first frame rotatably supported via a rotation shaft, and a front end of the first frame rotatably supported via a second rotation shaft in the horizontal direction, and a container is engaged and supported on the front end side. A second frame having a hook portion for driving and a driving means drivingly connected to the second frame. When the container is attached or detached, the driving means rotates only the second frame around the second rotation axis. While moving the container to slide it in the front-rear direction, the container is attached to and detached from the chassis, while at the time of dumping, the second frame is moved to the first
In a container attaching / detaching device for a cargo handling vehicle, which is integrally rotated together with a frame and is rotated about a first rotation axis to put a container in a dump state, when the container is slid forward in association with mounting, A container attaching / detaching device for a cargo handling vehicle, comprising container engaging means for engaging and fixing the bottom rear end of the container to the rear end of the first frame by sliding operation. 2. The container attachment / detachment device for a cargo handling vehicle according to claim 1, wherein the container engagement means has an engagement surface provided at a rear end portion of the first frame and extending along a length direction of the first frame. A rearwardly open claw portion, and a guide pin that is arranged at the bottom rear end of the container so as to extend in the vehicle width direction and that engages with the engagement surface of the claw portion when the container is mounted on the chassis. A container attaching / detaching device for a cargo handling vehicle. 3. A frame, which is rotatably supported on a chassis through a horizontal rotation shaft, and has a hook portion for engaging and supporting a container on a front end side thereof, and drive means drivingly connected to the frame. In the container attaching / detaching device of a cargo handling vehicle, wherein when the container is attached / detached, the drive means rotates the frame about a rotation axis to slide the container in a front / rear direction while attaching / detaching to / from a chassis. Container mounting / dismounting of a cargo handling vehicle, characterized by comprising container engaging means for engaging and fixing the rear end of the bottom portion of the container to the rear end portion of the undercarriage by the sliding operation when slidingly moving forward with attachment. apparatus. 4. The container attachment / detachment device for a cargo handling vehicle according to claim 2, wherein the container engagement means is provided at a rear end portion of the chassis and is opened rearward having an engagement surface extending along the front-rear direction of the chassis. A claw portion and a guide pin that is arranged at the rear end of the bottom of the container so as to extend in the vehicle width direction and that engages with the engagement surface of the claw portion when the container is mounted on the chassis. Container loading / unloading device for cargo handling vehicles. 5. The container attaching / detaching device for a cargo handling vehicle according to claim 2 or 4, wherein a guide roller is provided at a rear end portion of the chassis to roll the bottom surface of the container, and the guide pin is provided with a claw portion. A container attachment / detachment device for a cargo handling vehicle, wherein the container attachment / detachment device is positioned on a reference line that passes through the center of the guide roller and extends vertically upward in the engaged state.