JPH0295624A - Loading ramp - Google Patents

Abstract

PURPOSE:To facilitate the movement of a loading ramp, which a cargo carrying car reciprocates on the portion across a floor for freight cars and so forth, without increasing the inclination angle to the ground by dividing the loading ramp into two members and piling them up for transportation. CONSTITUTION:This loading ramp 10 is dividable into the first member 12 and the second member 14, at one end of which a taper portion 18 and a raising portion 20 are formed and at the other end of which a leg portion 24 provided with an engaging protrusion 26 is attached. At one edge of the second member 14 adjoining to the member 12, a hook portion 30 is formed. At the other edge, a leg portion 34 and a wheel 36 are attached. Moreover, at the leg portion 34, an engaging member 42 is formed, which is connected to the wheel 36 through an L-shaped member 48 provided with an expandable means 56. Use of the loading ramp dividable into two makes it possible to move the member 14 in an overlapped condition on the member 12, thus providing easy control in a traveling direction.

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention is useful for handling cargo from a freight car, truck, container car, etc. from the ground when carrying out cargo handling work outdoors using a cargo handling vehicle such as a forklift truck. This invention relates to a loading ramp that extends to the floor and on which a cargo handling vehicle moves back and forth.

[Prior Art] Such a loading ramp has a structure as shown in FIG. 6, for example.

In FIG. 6, the loading plate, designated as a whole by reference numeral 1, includes a main body part 3 having a floor 2 formed on its upper surface, leg parts 4, and wheels 5. The tapered surface 6 formed at one end (left end in FIG. 6) of the main body 3 is in contact with the ground G, and the tapered surface 6 formed at the other end (right i in FIG. 6) is in contact with the ground G. The stepped portion 7 is engaged with the floor of the loading platform of the freight car or the like to be illustrated.

Cargo handling vehicles such as forklifts (not shown in Figure 6)
performs cargo handling and transportation work by reciprocating between the ground G and the loading platform of a freight car or the like through the flow 72 on the upper surface of the main body 3.

When moving this loading ramp 1, the code 8
Extend the manual hydraulic device shown by and apply force in the direction of lowering the wheel 5 to relatively raise the main body part 3 and separate the tapered surface 6 from the ground G, and then move the leg part 4 as shown by arrow A. Rotate it and position it as shown by the dashed line. In this state, the loading plate 1 is in contact with the ground G only by the wheels 5, so it can be moved freely by various mechanical means or manually.

[Problems to be Solved by the Invention] However, the conventional loading ramp 1 has a long overall length a (approximately 12 m), so after the cargo handling and transportation work from one freight car is completed, the loading ramp 1 has to be loaded so that the cargo handling and transportation work is performed from another freight car. When moving the lamp, there is a problem in that it is difficult to control the direction of movement (advancement) of the lamp. In this case, if the overall length g is made smaller, directional control becomes easier, but since the inclination angle θ with respect to the ground G increases, reciprocating movement of the cargo handling vehicle becomes difficult, and the cargo handling and transportation work becomes dangerous.

The present invention was proposed in view of the problems of the prior art described above, and an object of the present invention is to provide a loading ramp that can be easily moved without increasing the angle of inclination with respect to the ground.

[Means for Solving the Problems] The loading lamp of the present invention can be divided into a first member and a second member, and a tapered portion is formed at one end of the first member, In addition, a holding part is formed, a leg part having an engaging protrusion is provided at the other end, and a hook part is provided at the end of the second member adjacent to the first member. The other end is provided with a leg and a wheel, the leg is provided with an engaging member, and the engaging member and the wheel are formed in an L-shape with telescoping means. connected by members.

In carrying out the present invention, it is preferable that the leg portion is configured such that its height or inclination angle can be adjusted by a landing gear or the like.

Preferably, the telescoping means is a fluid pressure machine, for example a hydraulic piston-cylinder mechanism.

Further, it is preferable that the upper surfaces of the first member and the second member are made of expanded metal so that a cargo handling vehicle reciprocating thereon can slip.

In addition, to prevent banks, it is preferable to use unique tires for the wheels.

In carrying out the present invention, it is preferable to use so-called standard parts as the parts, in order to reduce the cost of shipping.

[Function] Since the loading ramp of the present invention having the above-mentioned configuration can be divided into two parts, the first member and the second member can be connected in series to increase the overall length during cargo handling and transportation work. to reduce the angle of inclination with respect to the ground, and on the other hand, when moving, the first member and the second member are separated, and the second member is superimposed on the first member so as to be integrated. Moving. That is, since the total length is reduced to 1/2 during movement, the direction of movement can be easily controlled.

To place the second member on top of the first member, first lower the wheels of the second member using the telescopic member, raise the legs above the ground, and then use the forks of a cargo handling vehicle such as a forklift. If the second member is hooked onto the hook portion of the second member and moved toward the ground on the first member, the second member gradually overlaps the first member as the cargo handling vehicle moves.

Once the second member and the first member have completely overlapped, when the telescopic member is expanded and contracted again, the engaging member provided on the leg of the second member is connected to the leg of the first engaging member. When the elastic member is engaged from below with the engagement protrusion formed in the first member and the elastic member is further extended, the leg portion of the first member is lifted from the ground. In this state, insert the fork of the cargo handling vehicle below the lifting part and lift it up. As a result, the overlapping first member and second member are in a state where only wheels are installed, so that they can be easily moved by a cargo handling vehicle.

[Example] Hereinafter, an example of the present invention will be described with reference to FIGS. 1 to 5.

In FIGS. 1A and 1H, the loading ramp of the present invention, generally designated by the reference numeral 10, includes a first member 12 and a second member 1.
4 are connected.

A tapered part 18 that contacts the ground G and a lifting part 20 are formed at one end (left side in FIG. 1) 16 of the first member 12. and the other end (right side in Figure 1) 22
is provided with a leg portion 24, and an engagement protrusion 26 is formed on the leg portion 24. Note that the reference numeral 27 in FIG. 1A indicates the engagement surface of the engagement protrusion 26.

On the other hand, a hook portion 30 is formed at the end 28 of the second member 14 on the side adjacent to the first member (the left side in FIG. 1), and the other end (the right side in FIG. 1) 32 is provided with legs 34 and wheels 36.

Legs 34 and wheels 36 are shown in detail in FIG.

In FIG. 2, the legs 34 are attached to the bottom surface 38 of the second member 14.
, and is in contact with the ground G through a grounding portion 40. An engaging member 42 is formed on this leg portion 34,
The engagement member 42 is connected to one end 50 of an L-shaped member 48 by a pin 46. The L-shaped member 48 is connected to the wheel 36 at its bent portion 52 by a pin 54 that pivotally supports the center of the wheel 36, and at the other end 54 is connected to an expansion/contraction means 56 comprised of a jack or the like. has been done. This expansion/contraction means 56 is fixed to the second member 14 (5
8) In FIG. 2, reference numeral 60 indicates the engagement surface of the engagement member 42.

Referring again to FIG. 1B, the floor surface 62 of the first member 12 and the floor surfaces 64A and 64B of the second member 14 are made of expanded metal. As clearly shown in FIG. 1A, the floor surface 62 of the first member 12 and the floor surface 64A of the second member 14 are inclined at an angle θ.
The floor surface 64B is horizontal. In addition, the edge of the floor surface 64B is provided with a flap 66 for abutting against the edge of the cargo bed of the freight car.
is provided.

The dimensions of the loading ramp 10 are, for example, the total horizontal length of the floor surface is 11340 rm, the total width of the floor surface is 1788 mm, and the height from the ground to the floor surface 64B is 1350 aua.
The inclination angle θ is 8 degrees and 20 minutes. On the other hand, when the second member 14 is stacked on the first member 12 as shown in FIG. 3, the total length is approximately 72,000+m+,
This means that the total length has been shortened by 60 to 70%.

Next, referring mainly to FIGS. 4 and 5, a procedure for changing the loading ramps of the present invention from the state shown in FIG. 1 to the overlapping state shown in FIG. 3 will be described.

In the present invention, in order to move the loading ramp 10 to another freight car after cargo handling and transportation work on a certain freight car is completed, the second member 1 is moved onto the first member 12 as described above.
Overlap 4. In this stacking process, first, as shown in FIG. 4A, the wheels 36 are lowered to separate the legs 34 from the ground G. When the telescoping means 56 shown in FIG. 2 is extended, the wheels 36 are lowered and installed. Then, if the expansion/contraction means 56 continues to be expanded, the second member 14 and the leg portion 34 will be
is lifted from the ground. In this state, a cargo handling vehicle (forklift) C equipped with a fork F is moved over the first member 12 in the direction of arrow A1.

Next, as shown in FIG. 4B, the fork F of the forklift C is inserted into the latch-like hook 30 formed on the end 28 of the second member 14 and lifted. Here, the second
Only the vehicle M36 is in contact with the second member 14, and as the forklift C moves in the direction of arrow B1, the second member 1
4 moves rightward in FIG. 1 and gradually overlaps with the first member 12. Then, the forklift C moves the first member 12
When they come down from the ground, they are in a completely overlapping state as shown in Figure 3. In addition, in FIG. 3, the leg portion 24.3
4 and wheels 36 are shown enlarged in FIG.

In the state shown in FIGS. 3 and 5, the expansion and contraction means 56
When the leg portion 34 is further extended, the leg portion 34 is further lifted upward. As a result, the engagement surface 67 of the engagement member 42 formed on the leg portion 34 and the engagement surface 27 of the engagement protrusion 26 formed on the leg portion 24 gradually approach each other from facing each other. They are in contact with each other.

If the telescopic member 56 continues to be extended, the leg portion 34 will be lifted, and at the same time the engaging member 42 and the engaging protrusion 26 will be lifted up.
The legs 24 are also lifted off the ground via the legs 24, resulting in the state shown in FIG. 4C.

In the state shown in FIG. 4C, when the fork F of the forklift C is inserted into the lifting part 20 formed at the end 16 of the first member 12 and lifted up, the state shown in the fourth diagram is obtained. In this state, one end of the first member 12 and the second member is supported by the fork F, and the other end is integrally formed by the contact or engagement between the engaging protrusion 26 and the engaging member 42. It is raised and only the wheels 36 are in contact with the ground. Therefore, by moving the forklift in the direction of arrow A2, for example, the entire loading ramp 10 can be easily moved, and its direction of movement can be easily and accurately controlled. Once located at the desired location, it is reassembled into the state shown in FIG. 1A by reversing the procedure described above.

[Effects of the Invention] As explained above, the loading lamp of the present invention is divided into a first member and a second member, and the second member can be easily stacked on the first member. Therefore, the loading ramp can be moved in a superimposed state, and the loading ramp can be easily moved to a predetermined location between freight cars, trucks, container cars, etc.

This improves the safety and efficiency of cargo handling and transportation operations.

[Brief explanation of the drawing]

FIG. 1A is a side view of the loading ramp of the present invention;
Figure B is a plan view thereof, Figure 2 is a partially enlarged side view showing details of the main parts of the second member, Figure 3 is a side view showing the state in which the second member is stacked on the first member, Figures 4 A to D are diagrams showing the procedure for stacking the second member on the first member, and Figure 5 is a diagram showing the procedure for stacking the second member on the first member.
FIG. 6 is a partially enlarged side view of the prior art. 10 Loading lamp 12 First member
14... Second member 18... Taper part 20
... Lifting part 24.34... Leg part 26...
Engagement protrusion 30...Hook part 36...Wheel
42... Engaging member 48... L-shaped member 56
...Expansion means G...Ground C...Cargo handling vehicle F...Fork

Claims (1)

[Claims] It can be divided into a first member and a second member, and one end of the first member is formed with a tapered part and a holding part, and the other end is formed with an engaging part. A leg is provided with a mating protrusion, a hook is formed at the end of the second member adjacent to the first member, and a leg and a wheel are provided at the other end. A loading ramp characterized in that the leg portion is provided with an engaging member, and the engaging member and the wheel are connected by an L-shaped member provided with a telescopic means.