JPH0445955Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention relates to freight vehicles. More specifically, the present invention relates to an improvement of a type of freight vehicle in which the entire loading platform is moved rearward and all or part of the loading platform is tilted so that the end of the loading platform is brought into contact with the ground.

[Prior Art] A freight vehicle of the type in which the entire loading platform moves rearward and tilts is disclosed in the Utility Model Publication Act of 1983, which was created by the inventor of the present application.
This type of freight vehicle was first described in Utility Model Publication No. 10176, and the loading platform is fixed to the chassis via a guide rail, and the loading platform is moved rearward along the guide rail using a hydraulic system. It is moved and tilted, and its rear end is placed on the ground to load heavy cargo such as bulldozers.

Utility Model Publication No. 56-108931 discloses that the loading platform is divided into two parts, the two are connected by a joint, the first half of the loading platform is moved horizontally back and forth using a hydraulic system, and the second half is tilted as it moves horizontally. A model with its rear end grounded is described.

[Problems to be solved by the invention] In the above-mentioned conventional freight vehicle, the inclination angle of the loading platform is determined by the inclination angle of the guide rail arranged, and the inclination angle of the guide rail is determined by hydraulic pressure. There are types that can be set freely by the device, and types that follow the movement of the loading platform, that is, types that are defined by the ground contact position of the end of the loading platform.

Depending on the type of cargo, the condition of the ground at the loading or unloading location, or the procedure for loading or unloading, the angle of inclination of the entire platform or the rear half of the platform may be different, and only the area near the edge of the platform may be tilted at a slight angle. You may want to adjust it, but with any of the above models,
We are unable to accommodate this request.

This invention was created in view of the above, namely, in this invention, the entire loading platform moves rearward,
The main purpose of this invention is to clarify a type of freight vehicle whose whole or part is tilted, and whose angle can be adjusted independently only near the end of the loading platform, and other purposes of this invention. The advantages and benefits will become apparent in accordance with the following description and accompanying drawings.

[Means for Solving the Problems] The present invention provides cargo that moves back and forth and tilts along a platform tilting guide rail in which the entire cargo platform is fixed on the chassis, and a platform sliding guide rail provided at the rear end of the chassis. In automobiles, the entire cargo bed is divided into a main cargo bed and a separate rear cargo bed.
The rear end loading platform is connected to the main loading platform so as to be tiltable via a hinge mechanism, and its inclination angle is regulated by a stopper, so that it can tilt relative to the main loading platform only when the entire loading platform moves rearward. This is a freight vehicle characterized by the following structure.

[Function] When the hydraulic system provided between the main loading platform 10 and the chassis 30 is activated, the main loading platform 10 and the rear end loading platform 11 tilt rearward along the slope of the loading platform tilting guide rail 40. The vehicle then moves while moving, and stops with the end of the rear loading platform 11 in contact with the ground, and cargo loading work is performed. When loading of cargo is completed, the loading platform 1 is pulled up by an operation opposite to that described above, and the loading platform 1 returns to a horizontal state and is stopped at a predetermined position. The rear end loading platform portion 11 is bent upward or downward at an angle of 2 to 3 degrees depending on the condition of the ground with which the end portion touches the ground. Also, regardless of the ground condition,
Depending on the type of cargo or the loading procedure, the rear end of the cargo platform is bent by a driving means such as a hydraulic device.

[Example] Next, the freight vehicle of this invention will be described in detail with reference to the attached drawings.

FIG. 1 is a schematic side view showing a freight vehicle to which this invention is applied.

In the figure, 10 is a main loading platform, which forms a loading platform together with a rear end loading platform section 11, which will be described later. 20 is a loading platform rail, 30 is a chassis, and 40 is a loading platform tilting guide rail. Reference numeral 50 denotes a guide rail for loading platform slide, which connects the chassis 30 via a shaft 60.
is fixed. Main loading platform 10 and rear loading platform 11
is placed on the chassis 30 in a state where it is engaged with the platform tilting guide rail 40 and the platform sliding guide rail 50 via the platform rail 20 fixed to the lower surface thereof. Now, if the hydraulic system installed between the main loading platform 10 and the chassis 30 is activated, the main loading platform 10 and the rear end loading platform 11 will tilt rearward along the slope of the loading platform tilting guide rail 40. The vehicle is moved and stopped with the end of the rear loading platform 11 in contact with the ground, and cargo loading work is performed. When loading of cargo is completed, the loading platform 1 is pulled up by an operation opposite to that described above, and the loading platform 1 returns to a horizontal state and is stopped at a predetermined position.

This idea uses the mechanism described above to move and move the cargo platform.
This applies not only to lorries that tilt, but also to all types of lorries that use other mechanisms to move the loading platform rearward and tilt the whole or part of it.

The rear end loading platform section 11 will be explained.

As shown in FIG. 1, the rear end loading platform 11 is attached to the main loading platform 10 via a hinge mechanism 12.

The mounting position of the hinge mechanism 12, in other words,
The length of the rear loading platform section 11 is 1 to 2 m from the rear end of the loading platform.
Although it is preferable that the range is within the following range, it is not necessarily limited depending on the tonnage and type of truck.

As the hinge mechanism 12, for example, the one shown in FIG. 2 is used. That is, in FIG. 2, 13 is a shaft of a hinge mechanism, and the ends of the main loading platform 10 and the rear end loading platform 11 are movably fixed to this shaft 13. The movable range is the range of the gap indicated by θ ₁ and θ ₂ , where θ ₁ and θ ₂ are preferably 2 to 2.
Although the angle is 3 degrees, it is not limited to this angle.

For example, when θ ₂ =0, the rear end loading platform 11 is restricted from bending downward, and when θ ₁ =0, on the contrary, the rear end loading platform 11 is restricted from bending upward. things are regulated.

It is also a preferred embodiment to employ a configuration in which the range of θ ₁ and/or θ ₂ is variable.

As a mechanism for making θ ₁ and/or θ ₂ variable,
For example, a wedge inserted into the gap shown by θ ₁ and θ ₂ is prepared, and the range of θ ₁ and θ ₂ is defined by the amount of insertion of the wedge. Either a lock-like hydraulic system as shown in the publication is used, and the shaft 13 itself is formed from the cylinder part or rod of the lock hydraulic system, or the shaft 1
It is also possible to adopt a mechanism for locking the engagement portion between the main loading platform 10 and the rear end loading platform 11 by arranging a locking hydraulic device separately from the third loading platform.

Furthermore, between the main loading platform 10 and the rear end loading platform 11,
It is also a preferred embodiment to incorporate a mechanism for bending the rear end loading platform 11 upwardly and/or downwardly by arranging a driving means such as a hydraulic device, for example.

In the case of the above configuration, it is more preferable to use, for example, a hydraulic system as the driving means, since this hydraulic system serves both as a means for regulating the movable range of the rear end loading platform 11 and as a locking means.

3 and 4 show other configurations of the hinge mechanism 12, and the one shown in FIG. 3 is a member 12A connected to the main loading platform 10 with respect to the shaft 13.
by engaging the member 12B connected to the rear end loading platform 11, engaging a stopper 14 as shown in the figure on one or both of them, and moving the stopper 14 in the direction of the arrow. 11 is for regulating the bending angle.

The stopper 14 can be moved not only in the direction of the arrow but also in the vertical direction to restrict the range of θ ₁ and θ ₂ shown in FIG. 2.

In the case shown in FIG. 4, a member 12B connected to the rear end loading platform 11 is inserted inside a member 12A connected to the main loading platform 10, and the convex portion formed on the member 12B engages with the member 12A. The bending angle of the rear end loading platform 11 is regulated by the length of the recessed portion.

(Effects of the invention) Since this invention is constructed as described above, when the loading platform is moved and tilted rearward and its rear end is brought into contact with the ground, the rear end loading platform 11 may move depending on the condition of the ground, etc.
It can be bent upwards or downwards to achieve the above mentioned purpose.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of the truck, FIG. 2 is a sectional view of the hinge mechanism, and FIGS. 3 and 4 are perspective views. In the figure, 10 is the main loading platform, 11 is the rear end loading platform, 12 is the hinge mechanism, 13 is the shaft, 14 is the stopper, 20 is the loading platform rail, 30 is the chassis, 40 is the loading platform tilting guide rail, and 50 is the loading platform slide. 60 indicates the shaft.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a freight vehicle whose entire loading platform is fixed on the chassis and moves back and forth and tilts along a loading platform tilting guide rail and a loading platform sliding guide rail provided at the rear end of the chassis, The entire loading platform is divided into the main loading platform and a separate rear loading platform,
The rear end loading platform is connected to the main loading platform so as to be tiltable via a hinge mechanism, and its inclination angle is regulated by a stopper, so that it can tilt relative to the main loading platform only when the entire loading platform moves rearward. A freight vehicle characterized by comprising: (2) The freight vehicle according to claim 1, wherein the hinge mechanism has a built-in stopper. (3) The freight vehicle according to claim 1, wherein the stopper is a locking hydraulic device.