JPH072115A - Carrying truck having elevating mechanism - Google Patents

Abstract

PURPOSE:To facilitate the loading of cargoes on an elevating floor by lowering the elevating floor to the floor level. CONSTITUTION:Evacution spaces A, B are secured around front wheels 31 and rear wheels 32 so that the front wheels 31 and the rear wheels 32 are positioned relatively higher than the lower surface of the floor plate body 12. A manual hydraulic pump 35 is provided so that the rear wheel side of the floor plate body 12 is vertically moved and the rear wheels 32 are stored in the evacuation space B when the rear wheel side of the floor plate body 12 is lowered. A front wheel vertical moving mechanism 40 to support the front wheels 31 in both the carrying condition where the front wheels 31 are positioned relatively lower than the lower surface of the floor plate body 12 and the wheel-storing condition where the front wheels are positioned relatively higher than the lower surface of the floor plate body and are stored in the evacuation space A as the manual hydraulic pump 35 is operated, is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a carrier truck with a lifting mechanism having a lifting floor that can be moved up and down.

[0002]

2. Description of the Related Art Conventionally, as a carriage having a lifting mechanism,
For example, there is one in which a caster is provided on the lower part of the base plate, and an elevating floor is provided on the upper part of the base plate via an elevating mechanism. Also, as the same type, there are a hand pallet truck, a forklift, and the like.

[0003]

However, in the conventional carrier truck with the lifting mechanism, the lifting mechanism,
Since the base plate and the casters are provided, it is not possible to lower the lifting floor to the floor surface, and there is a problem that it takes a lot of effort to put a load on the lifting floor.

Further, in a hand pallet truck or a forklift, although the above-mentioned problems do not occur because the claws are lowered to the floor surface, the two claws alone are used to support the load, so that the load is placed between the two claws. While paying close attention to the center of gravity of the robot, it is necessary to let the claws sneak in under the baggage, which causes a troublesome operation. In addition, a product with casters is generally weak in strength because the part of the bottom plate where the casters are not provided is not designed to be loaded. For this reason, in order to carry products with casters, if a part of the bottom plate of the product that is not provided with casters is placed on the claws of a forklift, etc., the parts will be deformed or the product will wobble due to vibration during transportation. There is a problem that may fall.

The present invention has been made by paying attention to such a conventional problem, and does not require much labor to load the luggage and requires no troublesome operation, so that the luggage can be securely carried. An object of the present invention is to provide a transporting carriage with a lifting mechanism that can be transported.

[0006]

A carrier truck with an elevating mechanism for achieving the above object comprises an elevating mechanism, an elevating floor vertically moving by the elevating mechanism, front wheels and rear wheels, and the front wheels and the rear wheels. However, a retreat space is secured around each of the front wheels and the rear wheels so that it can be positioned relatively above the lower surface of the lift floor, and one wheel of the front wheel and the rear wheel is provided. The lifting mechanism is provided so that the one wheel side of the lifting floor moves up and down and the one wheel fits in the retreat space when the one wheel side of the lifting floor moves down. The other wheel of the rear wheels, with respect to the lifting floor along with the operation of the lifting mechanism,
A wheel top and bottom that displaceably supports the other wheel so that it can be moved between a transportable state that is relatively lower than the lower surface and a wheel storage state that is relatively higher than the lower surface and that fits in the retreat space. It is characterized by having a moving mechanism.

[0007]

In the movable state of the carriage, the lifting mechanism lifts one wheel (hereinafter, rear wheel) side of the lifting floor and the other wheel (hereinafter, front wheel) is lifted. It is in a transportable state. That is, the front wheels and the rear wheels are not contained in the retracted space, respectively, and the lift floor is located away from the floor surface.

When loading luggage on the dolly, the elevating mechanism is operated to lower the rear wheel side of the elevating floor so that the rear wheel is housed in the evacuation space. Then, along with this operation, the front wheels are displaced from the transportable state to the wheel storage state by the wheel vertical movement mechanism,
The front wheels also fit within the evacuation space. That is, the front wheels and the rear wheels are located relatively above the lower surface of the lifting floor, and the lower surface of the lifting floor is attached to the floor surface. In this way, the load is placed on the lifting floor with the lifting floor attached to the floor. If you have a slope plate, tilt it down to
Via this, the luggage is placed on the lifting floor.

When the load has been placed on the lifting floor, the lifting mechanism is operated again to raise the rear wheel side of the lifting floor. Along with this operation, the front wheels are brought into the transportable state again from the wheel storage state by the wheel vertical movement mechanism. Then, the front wheels and the rear wheels respectively come out of the evacuation space, and the lifting floor separates from the floor surface.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a carrier truck with a lifting mechanism according to the present invention will be described below with reference to FIGS. As shown in FIG. 2, the lift truck-equipped carrier truck of this embodiment includes a truck frame 10 on which luggage is loaded, a shelf frame 20 provided above the truck frame 10, front wheels 31, 31, ..., And rear wheels 32 ,. 32, a manual hydraulic pump (elevating mechanism) 35 that moves the bogie frame 10 up and down, and a transportable state in which the front wheels 31 are positioned relatively below the bottom surface of the floor plate 11 of the bogie frame 10, A front wheel up-and-down moving mechanism 40 that supports the front wheel 31 so that the front wheel 31 can be displaced in a wheel housed state that is located relatively above the lower surface.

As shown in FIGS. 2 and 3, the bogie frame 10 has a bottom plate 11 having a rectangular shape when viewed from above.
And the side plates 14, 15 and 15 that are provided perpendicularly to the bottom plate 11 on the rear side and the left and right sides of the bottom plate 11, and the slope plate 1 that is swingably provided with the front side as a base point.
And 6 are provided. The bottom plate 11 is the bottom plate body 1.
2 and a retreat space forming portion 13 that extends upward from the side thereof and then extends laterally in parallel with the bottom plate body 12.
In the evacuation space A formed by the evacuation space forming unit 13,
The front wheel 31 and a part of the front wheel vertical movement mechanism 40 are housed.
The rear side plate 14 is provided with an elastic backrest 18 and a load stopping hook 19 for stopping a load. Further, the left and right side plates 15, 15 are provided with slope plate stoppers 17, 17 at the front end portions thereof for stopping the slope plate 16 so as not to swing. The shelf frame 20 is provided on the side plates 14, 15, 15 of the bogie frame 10. At the rear end of the shelf frame 20, there is formed a hand-holding portion 21 for supporting a carrier's hand.

As shown in FIG. 1, the rear wheel 32 is provided on a rear wheel mounting base 50 arranged rearward of the bottom plate body 12 of the bogie frame 10. That is, the rear wheel 32
There is no bottom plate body 12 above, and a retreat space B is secured above the rear wheel 32 so that the rear wheel 32 can be positioned relatively above the bottom surface of the bottom plate body 12. A manual hydraulic pump 35 is provided on the upper surface of the rear wheel mounting base 50. The manual hydraulic pump 35 includes a pump body 36 including a cylinder and a piston housed in the cylinder, and a vertical operation end 37 connected to the piston.
And an operation handle 38 for moving the piston up and down. Vertical movement end 3 of the manual hydraulic pump 35
7 is connected to the rear side plate 14 of the bogie frame 10.

As shown in FIG. 1, the front wheel up-and-down moving mechanism 40 has both ends 43, 44 on the front side of the bottom plate body 12.
Is swingably provided via a pin 42, and both ends 48 and 49 are swingably provided on a rear side portion of the bogie frame 10 via a pin 47. A front wheel vertical movement guide arm 46, and a connecting rod 45 for connecting the front wheel support member 41 and the front wheel vertical movement guide arm 46.
It consists of and. Two front wheels 31, 31 are provided at one end 43 of the front wheel support member 41, and one end of a connecting rod 45 is connected to the other end 44. Further, one end 48 of the front wheel vertical movement guiding arm 46 is connected to one end of the connecting rod 45, and the other end 49 thereof is connected to the rear wheel mounting base 50.

Next, the operation of the carrier truck with the lifting mechanism of this embodiment will be described. As shown in FIG. 1A, when the luggage can be carried by the trolley of the present embodiment,
The vertical operation end 37 of the manual hydraulic pump 35 is located at the upper limit position and lifts the rear portion of the bogie frame 10, the rear wheel 32 is out of the retreat space B, and the front wheel 31 is also out of the retreat space A and is in a transportable state. ing. That is, the front wheels 31 and the rear wheels 32 are located relatively below the lower surface of the bottom plate body 12 of the bogie frame 10, and the bottom plate body 12 is separated from the floor surface F.

When loading luggage on the carriage, the operating handle 38 of the manual hydraulic pump 35 is operated to lower the vertical operation end 37 thereof. Then, as shown in FIG. 3B, the rear portion of the bogie frame 10 is lowered, and the rear wheel 32 is set in the retracted space B. For this operation, the other end 49 of the guiding arm 46
Is connected to the rear wheel mounting base 50, so its vertical position does not change, but since the position of the pin 47 attaching the guide arm 46 to the bogie frame 10 is lowered, one end 48 of the guide arm 46 is Swing to the rear wheel side.
Therefore, the connecting rod 45 is also pulled to the rear wheel side, the front wheel support member 41 swings, and the front wheel 31 enters the stored state, that is, the front wheel 31 is positioned relatively above the lower surface of the bottom plate 11, and It fits in the evacuation space A. As a result of this behavior,
The bottom surface of the bottom plate body 12 contacts the floor surface F.

Thereafter, the slope plate stopper 17 is removed,
The slope plate 16 is placed in a swingable state, and the slope plate 16 is tilted so that the swing end is attached to the floor surface F. Then, a load is placed on the bottom plate body 12 via the slope plate 16, and a rope or the like is hung on the load and the load stop hook 19 to fix the load to the dolly. After fixing the luggage to the dolly, the operation handle 38 of the manual hydraulic pump 35 is operated again to raise the vertical operation end 37. Then, the front wheel vertical movement mechanism 40 operates in the opposite direction to the above-described operation,
The front wheels 31 are again ready to be transported, and the bottom plate body 12 separates from the floor surface F.

As described above, in the present embodiment, since the lower surface of the bottom plate body 12 contacts the floor surface F when carrying in a load, almost no force for moving the load upward is required, and labor can be reduced. it can. Further, since the load is not received by the two claws that are smaller than the bottom area of the load, such as a forklift, but is received by the bottom plate body 12 that is larger than the bottom area of the load, the center of gravity of the load with respect to the bottom plate body 12 is positioned. The luggage can be placed on the bottom plate body 12 without worrying about. Furthermore, when transporting products with casters, rather than supporting the parts of the product that are not provided with casters (weak in strength), such as forklifts, the casters of the product itself (the product provided with casters The bottom plate part is strong in strength.)
Since it is supported by 2, the product will not be deformed.

Although the front wheel vertical movement mechanism 40 is mechanically linked to the operation of the manual hydraulic pump 35 in the present embodiment, the present invention is not limited to this, and is unique. The front wheel 31 may be provided with a drive source such as a pump for moving the front wheel 31 up and down, and the operation of the pump 35 may be captured as an electric signal to operate the drive source provided on the front wheel. Further, in the present embodiment, as the wheel vertical movement mechanism, the front wheel vertical movement mechanism 40 that displaceably supports the front wheel 31 between the transportable state and the wheel storage state is provided, but instead, the rear wheel 32 can be displaced. It is also possible to provide a rear wheel vertical movement mechanism for supporting and to provide a manual hydraulic pump 35 on the front side of the bogie frame 10 so that luggage can be carried in from the rear of the bogie.

[0019]

According to the present invention, since the lifting floor contacts the floor surface, it is possible to reduce the labor required for carrying in luggage. In addition, unlike a forklift, the luggage is not received by the two claws that are smaller than the bottom area of the luggage, but is received by the bottom plate that is larger than the bottom area of the luggage. It is possible to load the luggage on the bottom plate without any trouble, and it is possible to transport the luggage, such as products with casters, which can easily fall over, in a stable state.

[Brief description of drawings]

FIG. 1 is a cutaway side view of a main part of a carrier truck with a lifting mechanism according to an embodiment of the present invention.

FIG. 2 is a perspective view of a carrier truck with a lifting mechanism according to an embodiment of the present invention.

FIG. 3 is a front view of a carrier truck with a lifting mechanism according to an embodiment of the present invention.

[Explanation of symbols]

10 ... Bogie frame, 11 ... Lifting floor, 12 ... Floor plate main body,
13 ... Retraction space forming part, 16 ... Slope plate, 20 ... Fence frame, 31 ... Front wheel, 32 ... Rear wheel, 35 ... Manual hydraulic pump (elevating mechanism), 40 ... Front wheel up / down movement mechanism, 41 ... Front wheel support member, 45 ... connecting rod, 46 ... front wheel vertical movement guiding arm, 50 ... rear wheel mounting base, A, B ... retract space, F ... floor surface.

Claims (3)

[Claims] 1. A transport vehicle with a lifting mechanism including a lifting mechanism, a lifting floor that moves up and down by the lifting mechanism, and front wheels and rear wheels, wherein the front wheels and the rear wheels are provided with respect to the lifting floor. Evacuation spaces are secured around the front wheels and the rear wheels so that they can be located relatively above the lower surface, and one wheel of the front wheel and the rear wheel is attached to the one wheel of the lifting floor. Side is moved up and down, and when the one wheel side of the lifting floor is lowered, the lifting mechanism is provided so that the one wheel fits in the retracted space, and the other wheel of the front wheel and the rear wheel is A transportable state that is positioned relatively below the lower surface of the lifting floor with the operation of the lifting mechanism, and a wheel that is positioned above the lower surface and that fits in the retreat space. Displaceable to the stored state of the other Lifting mechanism with transport trolley, characterized in that it comprises a wheel vertical motion mechanism for supporting the wheel. 2. The elevating floor has a rectangular shape, and one of a front side and a rear side of the elevating floor on a side where the one wheel is provided and both left and right sides are The carriage with an elevating mechanism according to claim 1, wherein side plates are provided in a direction vertical to the elevating floor. 3. The elevating floor has a rectangular shape, and a slope plate is swingable with respect to a front side and a rear side of the elevating floor on a side where the other wheel is provided as a base point. The carrier truck with an elevating mechanism according to claim 1 or 2, which is provided in the.