JPS5941413B2 - Loading platform device for cargo handling vehicles - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cargo receiving platform device for a cargo handling vehicle such as a tailgate 1-IJ lid.

Conventionally, a loading platform is supported almost horizontally on the vehicle body via a lifting mechanism,
In a cargo handling vehicle such as a tailgate rick, the load receiving platform is raised and lowered between the ground and the floor surface of the vehicle body by the operation of the lifting mechanism, and cargo is loaded and unloaded between the ground and the floor surface of the vehicle body. Loading the cargo onto the platform must be smooth and easy.
It is desirable to be able to prevent cargo on a loading platform, especially cargo with a cask, from moving or falling, and to be able to carry out cargo handling operations safely.

Therefore, as described in French Patent No. 2244645, for example, it has been proposed that a stopper is mounted horizontally on a loading platform so that the stopper can be retracted from the loading surface. When loading cargo, when the stopper is retracted below the cargo receiving surface so as not to obstruct the passage of the cargo, the recessed state is automatically maintained by a locking member that engages with the stopper. Therefore, in order to release the locking between the locking member and the stopper, a specially installed operating device on the loading platform must be manually operated after the cargo passes the stopper to cause the stopper to re-protrude above the loading surface. It is necessary to prevent the baggage from moving back, which is very troublesome work.

It is an object of the present invention to provide a load receiving platform device for the cargo handling vehicle that can eliminate the drawbacks of the conventional devices and has excellent operability. In the cargo handling vehicle, the cargo receiving platform is supported by the cargo receiving platform and can be raised and lowered by the operation of the lifting mechanism, wherein a stopper is installed horizontally on the cargo receiving platform so as to be able to protrude and retract from the cargo receiving surface, and between the stopper and the cargo receiving platform, A spring member is provided on the load receiving platform to spring the stopper so as to protrude from the load receiving surface, and further, the stopper is locked in a retracted position against the elastic force of the spring member, and A first operating device is provided which is rotatably supported by the load receiving platform and superimposed on the upper surface of the stopper so as to be able to approach and separate from it, and which allows the stopper to be retracted into the load receiving platform by stepping on the first operating device. The present invention is provided with a depressing pedal and a second depressing pedal which can be engaged with the first depressing pedal to lock the stopper in the retracted position and can be released from the locking by depressing.

Hereinafter, a practical example of the present invention will be described with reference to the drawings. A support frame 3 is connected to the rear end of a vehicle body 1 of a cargo handling vehicle so as to be movable up and down via a parallel link mechanism 2, and a support rod is attached to the support frame 3. 6 supports the loading platform 4 substantially horizontally.

A telescoping cylinder 5 is connected between the vehicle body 1 and the parallel link mechanism 2, and the telescoping action of the telescoping cylinder 5 moves the loading platform 4 into a lowered position where it touches the ground and a raised position where it substantially coincides with the floor surface 7 of the vehicle body 1. It is possible to go up and down between them.

The load receiving platform 4 has a load receiving surface 4' formed on its upper surface, and a ramp surface 8 slanted downwardly at its front end so that the load W can be easily loaded and unloaded when the load receiving platform 4 is grounded on the ground. It has become.

Immediately behind the ramp surface 8 of the cargo receiving platform 4, a pair of elongated rectangular notch holes 9 are bored substantially parallel to the ramp surface 8, that is, across the cargo receiving platform 4.

In each notch hole 9, a stopper 10 for preventing the cargo W placed on the loading platform 4 from falling is provided so as to be freely protrusive and retractable. A bearing portion 11 is integrally provided, and a pivot shaft 12 is inserted through and supported by this bearing portion 11.

Stoppers 10 are provided on the pivot shaft 12 on both sides of the bearing portion 11.
A cylindrical rotating cylinder 13 is rotatably supported, and a torsion spring 14 is inserted into the outside of the cylinder. The elastic force of this torsion spring 14 is 1.
．． As shown by the solid line in FIG. 3, the stopper 10 is urged to rotate upward around the pivot shaft 12, and the stopper 10
is held in a protruding position protruding outward from the notch hole 9.

The upper surface of the stopper 10 is formed in a C-shape in cross section, and a tread surface 15 that slopes in the same direction as the ramp surface 8 and a stopper surface 16 that slopes in the opposite direction are formed facing each other. .

The stopper 10 is locked in an extended position or a retracted position by an operating device A consisting of first and second pedals 18, 22, which will be described below, and its structure will be described below.

Inside the notch hole 9, on the outside of the pivot shaft 12,
A short pivot pin 17 is pivotally supported on the same axis as the pivot shaft 12, and the first pedal 1 is attached to the pivot pin 17.
8 is rotatably supported.

The tread plate 19 of the first depressing pedal 18 overlaps one end of the tread surface 15 of the stopper 10 so as to be able to come into contact with and separate from it, and when the first depressing pedal 18 is depressed, the stopper 10 is 12 and can be retracted under the load receiving surface 4' against the spring force of the torsion spring 14, as shown by the chain line in FIG.

A first engagement piece 20 is formed at the base end of the first depression pedal 18, and this first engagement piece 20 can be engaged with a second engagement piece 23 of a second depression pedal 22, which will be described later. It has become.

In front of the first pedal 18, another pivot pin 21 is pivoted on the cargo receiving platform 4 in line with the pivot pin 17, and a second pedal 22 is attached to the pivot pin 21, and the second pedal 22 is connected to the first pedal. 18, and is rotatably supported opposite to the second engaging piece 2 at its base end, which can engage with the first engaging piece 20.
3, and an arcuate concave surface 27 is integrally formed below it.

A tension spring 25 is stretched between the tread plate 24 at the tip of the second pedal 22 and the cargo platform 4, and the tensile force of this tension spring 25 holds the second pedal 22 in the upper position as shown by the solid line in FIG. At that time, the footboard 24 is placed on the ramp surface 8 of the loading platform 4.
It protrudes outward from a window hole 26 bored in the.

Next, the operation of an actual case of the present invention constructed as described above will be explained. In the normal state of the cargo receiving platform 4, the stopper 10 is cut off by the elastic force of the torsion spring 14, as shown by the solid line in FIG. The first pedal 18 protrudes upward from the hole 9, and the first pedal 18 is also pushed by the stopper 10 and erected upward, and the tread plate 19 of the first pedal 18 is superimposed on the tread surface 15 of the stopper 10.

On the other hand, the second pedal 22 is rotated upward by the tensile force of the tension spring 25, and its tread plate 24 projects upward from the window hole 26.

In this state, the first engaging piece 2 of the first pedal 18
0 is in contact with the lower four arcuate surfaces 27 of the second engagement piece 23 of the second depression pedal 22.

When loading the cargo W on the ground onto the floor surface 7 of the vehicle body 1, the cargo receiving platform 4 is lowered to touch the ground, and then the cargo W with the casters 28 is rolled so that the cargo receiving surface 4' of the cargo receiving platform 4 is loaded. In this case, when the caster 28 passes the stopper 10, the inclined tread 15 is pushed downward, and the stopper 1
0 is rotated downward around the pivot shaft 12 against the elastic force of the torsion spring 14 and is recessed into the notch hole 9, so that the cargo W can pass over the stopper 10 without any hindrance.

In this case, both the first and second pedals 18, 22 are maintained in the normal state shown by solid lines in FIG.

After the cargo W has passed, the stopper 10 is again projected onto the cargo receiving surface 4' of the cargo receiving platform 4 by the elastic force of the torsion spring 14.

Therefore, the casters 28 of the load W on the load receiving surface 4' engage with the stopper surface 16 of the stopper, thereby preventing the load W from falling.

Thereafter, the load W can be loaded into the vehicle body 1 by raising the loading platform 4 and rolling the load W thereon onto the floor surface 7 of the vehicle body 1.

Next, when unloading the cargo W on the car body 1 to the ground, the worker transfers the cargo W inside the car body 1 onto the cargo receiving surface 4', lowers the cargo receiving platform 4 to touch the ground, and then When the treadle pedal 18 is depressed, it rotates downward around the pivot pin 17, and the stopper 10
It is also pushed by this, rotates downward, and is recessed under the cargo receiving surface 4'.

By the way, when the first pedal 18 is depressed, the first engagement piece 20 at the base end slides on the arcuate concave surface 27 of the second depression pedal 22 and climbs over the second engagement piece 23 . Therefore, even if the operator releases the pedal force, the first pedal 18 is held in the depressed position as shown by the chain line in FIG. 1, and the stopper 10 is retracted below the cargo receiving surface 4'. The load W on the load receiving surface 4' is stopped by the stopper 10.
It can be transported to the ground without being disturbed.

After unloading the cargo W, when the second pedal 22 is depressed,
Since this pivots downward around the pivot pin 21 and maintains the position shown by the chain line in FIG.
0 and comes out of engagement.

Therefore, the stopper 10 and the first pedal 18 can be rotated upward to project above the load receiving surface 4' as shown by the solid line in FIG. 3, in preparation for loading the load W again.

A stopper is horizontally mounted on the loading platform so as to be able to protrude and retract from the loading surface, and a spring member is provided between the stopper and the loading platform to spring the stopper so as to project from the loading surface,
Further, the cargo receiving platform is provided with an operating device capable of locking the stopper in the retracted position against the elastic force of the spring member and releasing the locking, and this operating device is configured to rotate the stopper to the cargo receiving platform. a first pedal that is supported and superimposed on the upper surface of the stopper so as to be able to approach and separate from the top surface of the stopper, and that when depressed, the stopper can be retracted into the cargo receiving tray; The stopper is equipped with a second pedal that can lock the stopper and release the lock by stepping on the stopper, so that when the load hits the stopper, the weight of the load will be released when the load hits the stopper. This allows the baggage to automatically sink under the cargo receiving surface, so there is no need to worry about it interfering with the passage of the cargo and therefore the loading operation.After the cargo passes the stopper, the elastic force of the spring member causes the stopper to slide into the cargo receiving surface. By automatically protruding onto the receiving surface, it is possible to reliably prevent the cargo from going backwards, that is, from falling from the receiving surface.As a result, loading the cargo onto the receiving surface can be carried out extremely efficiently and safely. be able to.

Furthermore, when unloading the cargo on the cargo receiving surface, the stopper can be held in a retracted position below the cargo receiving surface by operating the operating device, so that the stopper does not interfere with the movement of the cargo, that is, the unloading operation. There isn't.

In particular, since the operating device is composed of two pedals for retracting and protruding the stopper, the worker on the loading platform can move the stopper in and out by simply stepping on the pedals while supporting the cargo with his hands. Therefore, there is no need for the worker to take an unnatural posture in order to operate the stopper, and there is no fear that the cargo will inadvertently fall from the receiving surface during the operation of the stopper.

[Brief explanation of drawings]

Fig. 1 is a partial perspective view of a cargo handling vehicle equipped with the device of the present invention, Fig. 2 is a partially cutaway plan view of the device of the present invention, and Fig. 3 is a partial perspective view of the cargo handling vehicle equipped with the device of the present invention.
■It is a line side view. A...Operating device, 1...Vehicle body, 4...
... Loading platform, 4'... Loading surface, 10...
... Stopper, 14 ... Torsion spring as a spring member, 18 ... First pedal, 22 ...
...Second pedal.

Claims (1)

[Claims] 1. A loading platform is supported approximately horizontally on the vehicle body via a lifting mechanism,
In the cargo handling vehicle in which the cargo receiving platform can be raised and lowered by the operation of the lifting mechanism, a stopper is installed horizontally on the cargo receiving platform so as to be able to protrude and retract from the cargo receiving surface, and the stopper is placed between the stopper and the cargo receiving platform. A spring member is provided that springs to protrude from the cargo receiving surface, and the stopper is fixed to the retracted position against the elastic force of the spring member, and the stopper is released from its engagement II-. an operating device is provided, the operating device includes a first pedal that is pivotally supported by the load receiving platform and superimposed on the upper surface of the stopper so as to be able to come into contact with and separate from it, and that when depressed, the stopper can be retracted into the load receiving platform; A cargo receiving platform device for a cargo handling vehicle, comprising: a second pedal that can be engaged with the first pedal to lock the stopper in the retracted position, and can be released from the locking by pressing the pedal.