JPS6154611B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a cargo handling vehicle that loads and unloads containers between the platform and the ground or tilts the containers on the platform.

Conventionally, the cargo handling vehicle has been provided with a lashing device for selecting loading/unloading or tilting of the container, but the operation of this lashing device was uncertain and required high precision in manufacturing.

In view of the drawbacks of the prior art described above, the present invention provides a lashing device that can reliably select loading/unloading or tilting.

The present invention will be explained in detail below with reference to embodiments shown in the accompanying drawings.

A rectangular frame-shaped additional chassis 2 called a subframe is added and fixed onto a chassis 1 of a cargo handling vehicle. At the rear of the chassis 2, a tilting frame 4 is provided, which is made up of a pair of square cross-section members and extends forward from a tilting shaft 3 pivoted on the transverse axis of the rear end.
Guide rollers 5 passing through the chassis 2 are rotatably supported at both ends of the vehicle. Also, at the front of chassis 2 is an L
A contoured frame 6 having a side-shaped profile is provided, on which a container 7 is mounted. A hook 8 for connecting to a container is provided at the upper end of the vertical part of the L-shaped undulating frame 6, and this hook 8 engages with an engaging pin 9 provided at the upper front of the container when loading/unloading or loading the container. However, it will be detached after being unloaded from the ground.

As shown in FIG. 2, sliding guide grooves 10, 10 with a U-shaped cross section are provided opposite to each other on the inside of the front part of the tilting frame 4, and sliders 11, 11 provided on the L-shaped undulating frame 6 are arranged opposite to each other. Fitted therein, the undulating frame 6 is thus able to slide back and forth relative to the tilting frame 4, and can also be detached as will be described later.

As shown in FIGS. 2 and 6, in the middle part of the tilting frame 4, the undulation shaft 12 of the undulation frame 6 is pivotally supported along the lateral axis, and a bolt 13 is attached to the undulation shaft 12.
The inner support arm frame 14 connected to the inner support arm frame 14 is directed inward at the rear of the L-shaped undulating frame 6.

The upper end of a lever member 15 is pivotally supported on the inner support arm frame 14 on the side of the tilting frame 4 by a shaft 16, and the tip of a hydraulic cylinder 18 whose base end is pivotally supported on the chassis 2 by a shaft 17 is mounted in the middle part. It is pivotally connected by a shaft 19. Further, the lower end of the lever member 15 is connected to the other end of a connecting member 21 whose one end is pivotally supported by a shaft 20 to the undulating frame 6 by a shaft 22, and the lever member 15 and the connecting member 21 form a conversion mechanism. Configure. In this manner, the undulating frame 6 is slid back and forth along the guide groove 10 via the lever member 15 and the connecting member 21 as the hydraulic cylinder 18 expands and contracts.

A locking piece 23 is provided on both sides of the rear end of the hoisting frame 6 to engage with the hoisting shaft 12 when the hoisting frame retreats, and to rotate relative to each other in this engaged state. This constitutes a locking mechanism, and an intermediate notch 24 is provided in the guide groove 10 at a location where the slider 11 is located in this engagement position. Therefore, as the hydraulic cylinder 18 expands, the undulation frame 6 retreats and the locking piece 23 is attached to the undulation shaft 12.
If the hydraulic cylinder 18 continues to extend after being engaged, the undulation frame 6 centered on the undulation axis 12
When the slider 11 is turned upside down, the slider 11 can be removed upwardly through the notch 24.

Both ends of the undulating shaft 12 protruding from the tilting frame 4 are shaved to form a notched circular portion 25, and a bearing seat 27 having a notched portion 26 at the upper portion to receive this from below is provided on the side of the vehicle chassis 2. When the hoisting frame 6 is not raised, the cutout portion 25 of the hoisting shaft 12 can be pulled out upward through the notch 26 of the bearing seat 27, as shown in FIG. is raised even slightly so that it is locked in the bearing seat 27 at other rotation angle positions.

Reference numeral 29 denotes a lashing cylinder, which is connected between the shaft 28 of the lever member and the undulating shaft 12. The lashing cylinder 29 is connected to an oil tank 32 through a rubber hose 30 and a switching valve 31, and can be freely contracted or fixed in an extended position by opening and closing the switching valve 31, respectively. It is preferable that the switching valve 31 be opened and closed remotely by a control cable 33 from the rear or front of the vehicle chassis.

Therefore, when the switching valve 31 is in the open position, the undulating frame 6 is allowed to slide backward through the conversion mechanism, and when the switching valve 31 is in the closed position, the conversion mechanism is held in an immovable position. To prevent the undulating frame 6 from sliding backward.

Next, the operation of the present invention will be described. To select the dump function of tilting the container on the vehicle platform, the switching valve 31 is moved to the closed position by operating the control cable 33, and the lashing cylinder 29 is fixed. When the hydraulic cylinder 18 is extended from this state, the undulating frame 6 and the tilting frame 4 are integrated through the engagement of the slider 11 and the guide groove 10, and the front part is pushed up around the tilting shaft 3. At this time, since the undulating shaft 12 can be disengaged upward from the bearing seat 27 of the vehicle chassis, the container 7 can be dumped without interfering with the tilting movement.

On the other hand, to select the function of unloading the container 7 from the top of the vehicle chassis 2 to the ground, the switching valve 31 is set to the open position by operating the control cable 33, and the lashing cylinder 29 is made telescopic. When the hydraulic cylinder 18 is extended in this state, the undulating frame 6 on which the container 7 is mounted is amplified and pushed rearward via the conversion mechanism of the lever member 15 and the connecting member 21, and the slider 11 moves into the guide groove. Retreat along 10. This backward movement causes the locking piece 23 of the undulating frame 6 to
When the hydraulic cylinder 18 continues to extend, the hydraulic cylinder 18 stops when it locks onto the undulating shaft 12.
The front part of the hoisting frame 6 is lifted around the center, and at this time, the circular cutout 25 at the shaft end of the hoisting shaft 12 is different from the cutout part 26 of the chassis 2 and the bearing seat 27, so that the front part of the tilting frame 4 is raised to the chassis 2. Restrained and also slider 1
1 can be removed upwardly from the intermediate notch 24 of the guide groove 10, the undulating frame 6 starts raising without being prevented and continues to lift the front part of the container 7 and retreat along the guide rollers 5. Distribute to the ground.

Returning from the dumping operation and loading the ground container onto the vehicle platform can be performed in the opposite manner to the above. During loading, the lashing cylinder 29 is forcibly subjected to a pulling action, so that oil can be sucked into the lashing cylinder from the oil tank 32.

As described above, according to the present invention, lashing is achieved by changing the lashing device that selects container loading/unloading or tilting from the conventional mechanical locking or removal method to a hydraulic lashing or lashing release method. It is secure and will not come off.

[Brief explanation of the drawing]

FIG. 1 is a vertical cross-sectional side view of an embodiment of the device of the present invention;
FIG. 2 is a plan view thereof, FIGS. 3, 4, and 5 are sectional views taken along lines AA, BB, and CC in FIG. 1, respectively, and FIG. 6 is a sectional view of the end of the undulating shaft. 1... Chassis, 2... Chassis, 3... Tilt axis,
4...Tilt frame, 5...Guide roller, 6...
Relief frame, 7... Container, 8... Hook,
9... Engaging pin, 10... Sliding guide groove, 11...
Slider, 12... Luffing axis, 13... Bolt, 14
... Inner support arm frame, 15 ... Levers member, 16 ...
Shaft, 17... Shaft, 18... Hydraulic cylinder, 19...
... shaft, 20 ... shaft, 21 ... connection member, 22 ...
Shaft, 23...Locking piece part, 24...Notch part, 25...
...Notched circle part, 26...Notch part, 27...Bearing seat, 2
8...Shaft, 29...Lashing cylinder, 30...Rubber hose, 31...Switching valve, 32...Oil tank, 3
3...Control cable.

Claims (1)

[Scope of Claims] 1. A tilting frame that is tiltably supported at the rear of the vehicle chassis, an L-shaped undulating frame that is slidably and removably connected to the tilting frame and has a hook at the top for communication with a container; A cargo handling vehicle comprising a locking mechanism provided on the tilting frame and the hoisting frame and capable of engaging the hoisting frame with each other when the hoisting frame is retreated, and a lift cylinder for operating the hoisting frame. A container for a cargo handling vehicle, characterized in that a lashing cylinder is connected between the lashing cylinder and the container is configured to be tilted and unloaded in accordance with an extended position and a contracted position of the lashing cylinder. Loading and unloading and tilting equipment. 2. A container loading/unloading and tilting device for a cargo handling vehicle according to claim 1, which is equipped with an on-off valve that allows contraction of the lashing cylinder and is configured to be remotely controllable.