JPH0527334Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial field of application] This invention is a method of manufacturing glass that is lifted to a predetermined floor at a construction site by an elevator for transporting materials that is temporarily installed inside or on the outer periphery of a building.
This product relates to a transport vehicle for transporting various construction materials such as boards and equipment to each construction site on the floor.

[Conventional technology]

A forklift is conventionally known as this type of transport vehicle.

[The problem that the idea aims to solve]

However, since a forklift consists of a fork that serves as a loading platform attached to the front of a traveling vehicle body so that it can be raised and lowered, the difference between (length of the loading platform) + (length of the traveling vehicle body)
becomes the total length, and the total length becomes longer. As a result, it lacked versatility, as it was difficult to maneuver and could not be used in narrow transportation sites. What's more, the loading platform is connected to the front of the vehicle, in other words,
Since the structure has a loading platform connected to the traveling vehicle body in a cantilevered manner, in order to prevent the entire vehicle from tipping forward due to loading onto the traveling vehicle body, weight is added to the traveling vehicle body to prevent it from tipping forward by using balance weights, etc. This makes the whole thing heavier. As a result, depending on the transportation site, it may be too heavy to use, and in that respect, it lacks versatility.

The purpose of the present invention is to eliminate the above-mentioned conventional drawbacks.

[Means to solve the problem]

The transport vehicle according to the present invention is characterized by having a body frame in which two frame parts each having traveling ground wheels are connected in a horizontally spaced manner,
A loading platform is constructed across the two frame parts of the vehicle body frame, and by moving the loading platform up and down with respect to the vehicle body frame, the entire loading platform is positioned at a height above the ground. A state where the loading/unloading position is switched by providing a switching means for switching the loading/unloading platform to a loading/unloading position in which the side portions are positioned at a height lower than the set height above the ground or at a height close thereto, and the loading/unloading position is switched to the loading/unloading position. One side of the loading platform faces outward laterally, and a passage is formed for loading and unloading cargo in a direction lateral to the one side.

[Effect]

As shown in the examples below, by swinging the loading platform up and down or moving it vertically parallel to the vehicle body frame to switch the loading platform to the loading/unloading position, one side of the loading platform can be grounded. Or, the load can be easily moved between one side of the loading platform and the ground by making it almost in contact with the ground and making the drop between one side of the platform and the ground very small, and
One side in the lateral direction when the loading platform is switched to the loading/unloading posture by forming a passageway that allows one side of the loading platform to face laterally outward when the loading platform is switched to the loading/unloading posture. By switching the loading/unloading position to the loading/unloading position, one side can be used as a loading/unloading port for loading/unloading cargo from the outside of the loading platform. Loading and unloading can be done easily.

On the other hand, by moving the platform upward and switching the loading platform to the transportation position, the entire loading platform including one side can be positioned above the set height above the ground, so set the set height above the ground appropriately. By doing this, when moving, the cargo bed can be switched to the transportation position to ensure sufficient height of the cargo bed above the ground, and to prevent the cargo bed from colliding with other objects on the road surface during movement.
It can be avoided to the same extent as a normal transport vehicle. Moreover, two parts of the body frame are arranged at intervals.
Since the loading platform is constructed over two frame sections, the overall length is not only the length of the vehicle body frame, but also the loading platform can be stably supported by a plurality of traveling ground sections distributed around the periphery of the loading platform.

In addition, it may be possible to make it easier to load and unload cargo onto the loading platform by fixing the loading platform and installing a ramp such as a board or conveyor between the loading platform and the road surface. In addition to the installation space for the transport vehicle and cargo, space on the road surface is required to place a slope that protrudes from the loading platform, and it may not be possible to use it in narrow spaces. On the other hand, according to the present invention, since a ramp is not required, the loading and unloading space can be reduced by the installation space of the ramp, and it can be used even in narrow spaces.

[Effect of idea]

Therefore, it has become possible to provide a transport vehicle that is small, lightweight, and highly versatile and can be used even in narrow spaces.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in FIG. 1, a transport vehicle A according to the present invention
The two frame parts 1 and 2, each equipped with running wheels 1A and 2A, are moved in the front and back direction (an example of the horizontal direction).
A vehicle body frame is provided which is spaced apart from each other, and a loading platform 3 is constructed between the front and rear frame portions 1 and 2 of the vehicle body frame. To explain the arrangement of the loading platform 3 in detail, as shown in Fig. 4A,
In a plan view, a tangent a connecting the outer contour portion of each of the traveling ground contact wheels 1A, 2A far from the center of the traveling ground contact wheels 1A, 2A group and the outer contour portion of the adjacent traveling ground contact wheels 1A, 2A.
The loading platform 3 is arranged such that the center of gravity G of the loading platform 3 is located in a portion surrounded by a closed contour line.

The loading platform 3 connects the left and right ends of the frame parts 1 and 2 at both the front and rear ends of the right and left sides thereof, and has an axis P parallel to the traveling direction.
It is pivotally supported by frame parts 1 and 2 so as to be able to swing up and down around the frame parts 1 and 2, and one side part of the free end side of the loading platform 3 is mounted on the other left and right ends of the frame parts 1 and 2, respectively. Support members 1B and 2B are attached to maintain the loading platform 3 in a horizontal state by supporting it. In other words, by vertically swinging relative to the vehicle body frame around the axis P, the loading/unloading platform 3 is placed in a loading/unloading position tilted left and right with one side of the free end in contact with the ground, and one side of the free end side is tilted to the left and right. It is configured such that it can be freely switched between a transportation posture in which the shaft center P is positioned at the same set height above the ground.
In addition, on the lateral outer side of one side of the free end side of the loading platform 3, one side of the loading platform 3 is provided with the one side facing outward when the loading platform 3 is switched to the loading/unloading position. A passage D for loading and unloading cargo is formed in a direction transverse to the side, and furthermore, the loading surface of the loading platform 3 is
In order to facilitate loading and unloading by sliding the pallet table B in the loading and unloading position, the roller conveyor 3A is composed of a plurality of rollers arranged side by side in the left and right direction. A stopper plate 3B is provided to prevent the pallet table B from sliding down in the lateral direction, and a handle 3c for raising and lowering the pallet table around the axis P is provided on one side of the free end.

The running wheels 1A, 2A provided on the frame parts 1, 2 are composed of spherical wheels that can roll freely in two-dimensional directions.

Among the frame parts 1 and 2, the front frame part 1 is a first frame 1 that pivotally supports the loading platform 3.
a, the second frame 1b is slidably fitted in the left-right direction, and a drive mechanism is provided to slide the first frame 1a relative to the second frame 1b, that is, to extend and contract the frame portion 1. A connecting member 1D for connecting to the towing vehicle C, the aforementioned supporting member 1B, and a stopper plate 1C for preventing the pallet table B from sliding down in the lateral direction are attached to the second frame 1b. As shown in FIGS. 2 and 3, the means for making the first frame 1a and the second frame 1b slidable includes forming rails 4 along the left-right direction on the front and rear side walls of the first frame 1a. , second frame 1
b is provided with a plurality of roller pairs 1d for slidably holding the rails 1c from above and below; A pinion gear 1f meshing with the rack gear 1e and an electric motor 1g for driving the pinion gear 1f are attached to the frame 1b.

Of the support members 1B and 2B, the support member 1B attached to the frame part 1 on the front side has a fixed structure, and the support member 2B attached on the rear side has a fixed structure.
By moving back and forth, it can be switched between an active position where the loading platform 3 is placed and a non-active position where the loading platform 3 is released.

In order to load the pallet table B loaded with construction materials onto the carrier A having the above-mentioned configuration, the steps shown in Figures 4 and 5 are required.
As shown in the figure, [1] Slide the front frame part 1 and
After moving the loading platform 3 that is pivotally supported by the frame 1a to the side, the carrier A is moved backward so that the loading platform 3 is positioned on the side of the pallet platform B, and [2] By pulling out the attached support member 2B, the loading/unloading platform 3 is moved to an inclined loading/unloading position with one side touching the pallet side, and the pallet platform B is moved along the roller conveyor 3D provided on the loading platform 3. After holding the handle 3C and pulling up the cargo platform 3 to a horizontal position, insert the support member 2B, and then slide the front frame section 1 in the opposite direction to move the cargo platform directly behind the tow vehicle C. [3] When the transport vehicle A is towed by the tow vehicle C and arrives at the predetermined construction site, the process is reversed to the above. Pallet stand B is unloaded from loading platform C using the following procedure.

[Another example]

Another embodiment of the present invention will be described below.

<1> In the above embodiment, an idling roller conveyor 3D was provided on the loading surface of the loading platform 3, but as the roller conveyor 3D, a power roller configured by installing a small electric motor inside the roller was used in parallel. Pallets B may be automatically loaded and unloaded by providing a roller conveyor.

<2> In the above embodiment, the posture of the loading platform 3 was changed by manually lifting the loading platform 3 and inserting and removing the loading platform support member 2B, but as shown in FIG. A jack 4 consisting of 4a and an electric motor 5 are installed at the bottom of the loading platform 3,
By rotating the screw shaft 4b that raises and lowers the jack 4 with the electric motor 5, the loading platform 3 may be switched between an inclined state and a horizontal state.

<3> In the above embodiment, the loading platform 3 is configured to be able to be switched between an inclined loading/unloading position and a horizontal transporting position by swinging, but as shown in FIG. An electric motor 6 for raising and lowering the loading platform and a pinion gear 7 interlocked with the electric motor 6 are attached to each of 1 and 2, and a rack gear 8 that meshes with the pinion gear is attached to the trolley 3. By raising and lowering the loading platform 3 in a horizontal position, it may be configured to be switchable between a horizontal loading/unloading position and a transporting position.

<4> In addition, the vehicle body frame may be U-shaped in plan view, as shown in FIG. 3 may be supported by a support member 2B which can be freely inserted and removed in each frame portion 1, 2 in a transportation posture.

<5> Furthermore, as shown in FIG. 9, the loading platform 3 is attached to the U-shaped vehicle body frame including the frame portions 1 and 2 so as to be swingable up and down about an axis P located approximately at the center in the longitudinal direction. A drive mechanism consisting of an electric motor M, a deceleration mechanism 9, a transmission shaft 10, and an interlocking mechanism 11 is provided on the vehicle body frame, and the loading platform 3 is vertically swung around the axis P, thereby enabling loading and unloading in a tilted state. It may be configured to switch between the posture and the horizontal transportation posture. The deceleration mechanism 9 and the interlocking mechanism 11 utilize a worm gear, and are configured to prevent the transmission of power from the loading platform 3 to the electric motor M, that is, to freely swing the loading platform 3 without providing a special stopper. It is designed to be fixed in a moving position.

<6> Note that although reference numerals are written in the claims section of the utility model registration for convenience of comparison with the drawings, the present invention is not limited to the structure of the attached drawings by such entry.

[Brief explanation of the drawing]

The drawings show an embodiment of the transport vehicle according to the present invention, in which Fig. 1 is a perspective view, Fig. 2 is a vertical cross-sectional view of the main part, Fig. 3 is a cross-sectional view taken along the - line in Fig. 2, and Fig. 4 D and FIGS. 5A to 5C are a plan view and a side view showing a pallet mounting method, and FIGS. 6 to 9 show another embodiment of the present invention, FIG. 6 is a side view, and FIG. 7 is a side view. 8 is a plan view, and FIG. 9 is a partially cutaway perspective view. 1, 2... Frame portion, 1A, 2A... Traveling ground wheel, 3... Loading platform.

Claims (1)

[Scope of utility model registration request] A vehicle body frame is provided in which two frame portions 1 and 2 having traveling ground wheels 1A and 2A are connected in a horizontally spaced manner, and a loading platform is provided across the two frame portions 1 and 2 of the vehicle body frame. 3 is constructed and the loading platform 3 is moved up and down with respect to the vehicle body frame to position the entire loading platform 3 above the set height above the ground, and one side of the loading platform 3 is positioned above the set height above the ground. A switching means is provided for switching the loading/unloading position of the loading/unloading platform 3, which is positioned at a height that is low enough to make contact with the ground or a height close to the height, and one of the loading/unloading positions of the loading/unloading platform 3 is switched to the unloading/unloading position. A transport vehicle that has one side facing outward and has a passageway for loading and unloading cargo laterally to one side.