JPH036111B2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Industrial Application] The present invention is applicable to construction lifts for lifting and lowering construction materials and workers at construction sites, lifts for lifting and lowering articles at logistics facilities, and lifts such as dam waiters. Regarding.

More specifically, a transfer machine is provided with a loading platform that can be raised and lowered along a guide mast, and a loading drive mechanism for raising and lowering the loading platform, and in which the loading platform is equipped with a loading section on a vehicle body so as to be able to move up and down. The present invention relates to a lift which is provided so as to be movable in and out of the loading platform so that cargo can be easily loaded and unloaded onto the loading platform without requiring any manpower.

[Conventional technology]

With conventional lifts, the transfer machine is placed on the loading platform, and the cargo is loaded onto a pallet truck or container truck on a certain floor in advance, and the transfer device is placed under the floor of the truck from the lift's loading platform. After the cargo is advanced and submerged, the loading section is raised, and while the cargo is lifted with the cart, the transfer machine is retired onto the cargo platform to be loaded onto the platform, and the cargo is unloaded by performing the reverse operation. (I can't cite any references).

[Problem that the invention seeks to solve]

However, the conventional configuration described above has the following problems.

In other words, some of the cargo that is placed on the platform of the lift cannot be loaded onto the cart as described above, and is instead stacked in bulk.

With conventional lifts, when the transfer machine is retired onto the platform, it always remains on the floor of the platform, so when loading cargo in bulk as described above, the transfer machine gets in the way and makes it difficult to transport. Work efficiency was decreasing.

In other words, conventional lifts of this type were designed for work that involved loading and unloading cargo onto and from a loading platform using a transfer device, so they were not necessarily suitable for transporting bulk cargo or workers. There was a problem that there was no.

SUMMARY OF THE INVENTION In view of the above-mentioned circumstances, an object of the present invention is to provide a lift that can efficiently transport cargo in bulk in addition to transporting cargo using a cart.

[Means for solving problems]

The characteristic configuration of the lift according to the present invention is that a storage space is formed under the floor of a loading platform that can be raised and lowered along a guide mast to store a transfer machine in which a loading section is mounted on a vehicle body so that it can be raised and lowered; An opening for taking the transfer machine in and out of the storage space is formed on the floor of the loading platform, an opening and closing means for opening and closing the opening, and an opening and closing means for opening and closing the opening; The reason is that a lifting means is provided for raising and lowering it between the floor and the floor.

[Effect]

In other words, by operating the lifting means to position the transfer machine on the floor of the loading platform and operating the opening/closing means to close the opening formed in the floor, the transferring machine can be moved in and out of the loading platform. This makes it possible to efficiently load and unload cargo loaded on a pallet truck or a container truck onto a loading platform.

On the other hand, from this state, once the opening/closing means is operated to open the floor opening, the lifting means is operated to store the transfer machine in the storage space formed under the floor of the loading platform, and the opening/closing means is operated to open the floor opening. If you close your mouth,
Since there is no transfer machine on the floor of the loading platform, the entire floor of the loading platform can be used to efficiently load and unload bulk cargo and get people on and off without being obstructed by the loading machine.

〔Effect of the invention〕

As a result, by selectively positioning the mobile vehicle either above or below the floor of the loading platform depending on the type of use, it is possible to not only load and unload cargo using a trolley, but also to efficiently load and unload bulk cargo. This has made lifting work using this type of lift even more efficient.

〔Example〕

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

As shown in FIGS. 4 and 5, a guide mast 1 made of steel frame materials and a loading platform 2 that can be raised and lowered along the guide mast 1 are used to construct buildings between desired floors of a building B under construction. It is configured as a construction lift for lifting and lowering materials and other loads.

The guide mast 1 is fixed to the floor G of the lowest floor with an anchor bolt (not shown), and is appropriately connected to the wall of the intermediate floor via a connecting member 1a.
Furthermore, a brace 1b extending from the top to the top floor R is provided.

The loading platform 2 is attached to a lifting frame 3. A first sheave 4 is pivotally supported at the top of the elevating frame 3, and a wire rope 5 that suspends and supports the loading platform 2 is wound around the first sheave 4.

One end of this wire rope 5 is attached to the guide mast 1
It is latched to a continuous stand 6 attached to the top of the. Moreover, the other end of this wire rope 5 is connected to a continuous stand 6.
After being wound around a second sheave 7 that is pivotally supported by the guide mast 1 and a third sheave 8 that is pivotally supported at the lowermost part of the guide mast 1, it is wound around a winch 9.

By letting out the wire rope 5 from this winch 9, the loading platform 2 is lowered together with the lifting frame 3. On the other hand, by feeding the wire rope 5 into this winch 9, the lifting frame 3 is lowered.
It is configured such that the loading platform 2 can be raised at the same time. That is, this winch 9 serves as a drive mechanism for raising and lowering the loading platform.

As shown in FIGS. 4 to 8, guide rails 1A made of H-shaped steel or the like are attached to both sides of the guide mast 1, respectively. On the other hand, a pair of guide rollers 3a and 3b, which are orthogonal to each other, are pivotally supported on the upper, lower, left and right sides of the elevating frame 3, respectively. This pair of guide rollers 3a, 3
b are both flanges 1 of the guide rail 1A.
It fits between Aa and abuts the flange 1Aa and web 1Ab, respectively.

In other words, when the loading platform 2 is raised or lowered by the drive of the winch 9, each pair of guide rollers 3a and 3b rotates while contacting the guide rail 1A at four locations on the top, bottom, left, and right of the lifting frame 3, thereby stabilizing the loading platform 2. It is configured so that it can be raised and lowered in any position.

The above-mentioned series of stands 6 are configured to be able to change and fix their positions along the guide mast 1, and as the construction of Building B progresses and the number of floors increases, more guide masts 1 are added and the number of floors is increased. By moving the series of platforms 6 along the added guide mast 1, the structure is such that cargo can always be lifted up to the top floor of the building B under construction.

In addition, as shown in FIG.
The loading platform 2 stabilizes the stopping position of the loading platform 2 by grasping the
Fixing gripping devices H are attached to two locations on the left and right facing each of the pair of left and right guide rails 1A.

As shown in FIGS. 9 and 10, this gripping device H includes a cylindrical body 10 fixed to the lower surface of a loading platform 2, and a frame 1 slidably fitted inside the cylindrical body 10.
1, a hydraulic gripping cylinder 12 attached to this frame 11, and the like.

A boss member 14 is attached to the piston rod 12a of the gripping cylinder 12 and has a pressing plate 13 fixed thereto, which faces the flange 1Aa of the guide rail 1A.
It is attached by pin 15. Further, one end side of the frame 11 is bent to form a flange 1Aa of the guide rail 1A together with the pressing plate 13.
The receiving plate portion 11A is positioned to sandwich the .

The guide rail 10 is gripped by the gripping device H by activating the gripping cylinder 12 to extend its piston rod 12a, and pressing the press plate 13 together with the boss member 14 against the outer surface of the flange 1Aa of the guide rail 1A. By further operating the gripping cylinder 12 in the same direction, the reaction force from the flange 1Aa of the guide rail 1A,
Move the frame 11 to the right in the figure and attach the receiving plate portion 11A to the flange 1 of the guide rail 1A.
It is done by pressing against the inside of Aa.

On the other hand, as shown in FIGS. 6 to 8, two transfer machines T are mounted on the loading platform 2. Each transfer machine T includes a lower vehicle body 18 on which a pair of driving wheels 17A and a pair of idle wheels 17B are pivotally supported, and a loading section.
It has a table 19 serving as the LC.

In addition, in the figure, 2A and 2B are handrails with a wire mesh, and the handrail 2A with a wire mesh provided along the longitudinal direction of the loading platform 2 on the opposite side of the lifting frame 3 is a handrail with a wire mesh.
The handrail 2B with wire mesh is configured to be able to change its posture between a posture in which it protrudes upward from the floor 2F of the loading platform 2 and a posture in which its upper end is retracted below the floor 2F of the loading platform 2. It is fixedly installed in a position that protrudes upward from the 2nd floor of the building.

In both transfer machines T, as shown in FIGS.
It fits into a vertically elongated hole 19a formed in a guide member 19A connected to the table 19. Thereby, the table 19 is configured to be movable up and down with respect to the lower vehicle body 18.

On the lower vehicle body 18, as shown in FIGS. 2A and 2B and FIG.
A-shaped rails 20 are fixed at four locations on the front, rear, left, and right, and rollers 27 are provided between the upper surface 20a of each rail 20 and the lower surface of the table 19, respectively. Of the four rollers 27, the front and rear left and right pairs are connected by separate shafts 28, and both shafts 28 are separately connected to cylinder rods 21a of a pair of hydraulic cylinders 21 provided at the front and rear. has been done.

As shown in FIG. 1A, the pair of hydraulic cylinders 21 are
By operating the cylinder rod 21a to extend the cylinder rod 21a, the pair of rollers 27 on the front side move forward, and the pair of rollers 27 on the rear side move rearward. Each roller 27 rises while moving along the upper surface 20a of the rail 20, and as each roller 27 rises, it touches the table 19 from below.
is lifted, and as a result table 19 is
It is configured to come into contact with the floor of the pallet truck 24 from below and lift the pallet truck 24 slightly as shown in FIG. 1B. On the other hand, hydraulic cylinder 2
When the first cylinder rod 21a is retracted, the table 19 is lowered by an operation opposite to that described above.

That is, the rail 20 having the inclined surface 20a is a cam, and the rollers 27 are cam followers for this cam, and the relative movement between the rails 20 and rollers 27 raises and lowers the table 19, which is the load holding part LC. It constitutes a cam mechanism C that allows

Further, the pair of hydraulic cylinders 21 are actuators for relatively moving the rail 20, which is a cam, and the roller 27, which is a cam follower.
The above-mentioned cam mechanism C constitutes a driving means DM for raising and lowering the table 19, which is the load placement section LC.

Further, each transfer machine T is provided with a motor 22 that is interlocked and connected to a drive wheel 17A. This motor 22 and table lifting cylinder 21
Power is supplied to a solenoid valve (not shown) that opens and closes a hydraulic oil supply path from a hydraulic pump 28 to the hydraulic pump 28, and transmission of an operation control signal is performed by separate cables 23 extendably installed from the loading platform 2. It is becoming more and more popular. Although not shown in the drawings, the power cords of the cables 23 are combined into one cable and are configured to be connectable to electrical outlets provided on each floor of the building B.

Note that power may be supplied to the transfer machine T by mounting a battery on the loading platform 2 and from this battery via a cable, or alternatively, the transfer machine T itself may be provided with a battery.

Both transfer machines T are driven by the motor 22,
It is designed to be able to move linearly back and forth, and is mounted on the loading platform 2 with the direction of movement matching the direction of loading and unloading cargo onto the loading platform 2. By using both of the transfer machines T, the cargo L can be loaded onto and unloaded from the cargo platform 2 without relying on human labor.

From floor F of building B using this transfer machine T to loading platform 2
The transshipment of cargo L to is carried out as follows.

As shown in FIG. 11A, a load L is placed on the upper part of a pallet truck 24 on a floor F of a certain floor of a building B. Stop the loading platform 2 on this floor,
After the guide rail 1A is gripped by the aforementioned gripping mechanism H, the footboard 25 stored in an upright position on the loading platform 2 is lowered by the operation of a cylinder (not shown) and moved from the loading platform 2 to the floor F of the building B. bridge over.

Next, the motor 22 is driven to drive the two transfer machines T.
The pallet truck 24 is moved forward and inserted under the pallet truck 24, as shown in FIGS. 11B and 12. Note that the motors 22 of both transfer machines T are configured to be driven synchronously.

In this state, the pair of hydraulic cylinders 21 for raising and lowering the table are operated, as shown in FIG.
Lift up the pallet truck 24 together with the table 19. Then, the motor 22 is driven to move the two transfer machines T backward and accommodate them on the loading platform 2.

This state is shown in FIG. 11D. This completes the transfer of the luggage L to the loading platform 2. In this state, the table 19 may be left raised, or the table 19 may be lowered and the pallet truck 24 may be lowered onto the loading platform 2.

Note that a contact portion 26 is provided on the loading platform 2 at a location rearward of the transfer machine T. This hit part 2
6 comes into contact with the rear end of the transfer machine T that moves backward from the floor F of the building B and is accommodated in the loading platform 2, and the moving direction of the transferring machine T is correct in the direction of loading and unloading the cargo L onto the loading platform 2. This is to correct the posture of the transfer machine T so that they match.

Further, the transfer of the luggage L from the loading platform 2 to the floor F of the building B using the transfer machine T is performed by an operation opposite to the above-mentioned operation.

That is, the transfer machine T is advanced from the state shown in FIG. 11D, and when it reaches a predetermined position on the floor F of the building B as shown in FIG. Furthermore, as shown in FIG. 11B, only the table 19 is lowered, and then the transfer machine T is moved backwards to accommodate it on the loading platform 2.

Note that the number of transfer machines T to be mounted on the loading platform 2 is not limited. Further, the transfer machine T may be configured to be able to move along a route other than a straight route.

In the transfer machine T, the table 19 is raised and lowered by the cam mechanism C described above, making it possible to efficiently use the driving force from the hydraulic cylinder 21 for raising and lowering the table 19. The installation space for the driving means DM below the table 19 when it is at the lowest position can be kept within the vertical dimension that is approximately the same as the diameter of the hydraulic cylinder 21, and the overall height of the transfer machine T at this time can be kept low. This makes it possible to apply the transfer machine T to various pallet trucks 24 having different floor heights.

On the other hand, in the loading platform 2,
As shown in Figures A to D, a storage space V for storing the above-mentioned transfer machine T is provided below the floor 2F, and a storage space V is provided on the floor 2F of the loading platform 2 for this storage space V. An opening 2a is formed through which the transfer machine T is taken in and taken out.

A table lifter 29 is installed in each of the storage spaces V, and each transfer machine T is placed on a table 29a of the table lifter 29.

Then, the table lifter 29 moves the upper surface of the table 29a to the floor 2F of the loading platform 2, as shown in FIG.
Place the transfer machine T at almost the same level as the loading platform 2.
As shown in FIG. 1, the transfer device T is stored in the storage space V so that the transfer device T can be positioned at almost the same level as the floor 2F of At the same time, the table 19 of the transfer machine T can be positioned at approximately the same level as the floor 2F of the loading platform 2.

In other words, when the transfer machine T is located on the floor 2F of the loading platform 2, as described above, the pallet truck 24
Loading and unloading cargo L loaded on platform 2,
While making it possible to efficiently carry out operations using the transfer machine T, when the transfer machine T is stored in the storage space V, it is possible to load cargo L in bulk onto the loading platform 2 and to allow workers to board and disembark the cargo L. The configuration is such that this can be carried out efficiently without being hindered by the presence of the transfer machine T.

That is, the tail lifter 29 constitutes a lifting means for raising and lowering the transfer machine T between the inside of the storage space V and the floor 2F of the loading platform 2.

In addition, as described above, when the transfer machine T is in the stored state, the table 19 which is the load loading section LC closes the opening 2a of the loading platform 2, and the floor 2F of the loading platform 2 of the transfer machine T is closed. The configuration in which the opening 2a of the loading platform 2 is closed by the table 29a, which is the placing part of the table lifter 29, which is the elevating means, on the transfer machine T in the upper position, serves as the opening/closing means for the opening 2a of the loading platform 2. .

[Another example]

Next, another example of the present invention will be listed.

<1> As a means for opening and closing the opening 2a formed on the floor 2F of the loading platform 2, a lid is provided separately from the table 19 of the transfer machine T, and a mechanism for opening and closing the opening 2a using this lid is provided.

<2> Place the transfer machine T between the storage space V and the floor 2 of the loading platform 2.
As an elevating means for elevating between F and
A wire hanging type winch is provided in place of the table lifter 29.

<3> In addition to construction lifts, the present invention is applied to lifts for transporting cargo in logistics facilities, lifts such as dumb waiters, etc.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

The drawings show an embodiment of the lift according to the present invention, FIG. 1 is a side view showing the transfer machine stored under the floor of the loading platform, FIGS. 2A and 2B are vertical sectional views of the transfer machine,
Figure 3 is a plan view of the lower body of the transfer machine, Figure 4 is an overall front view of the construction lift, Figure 5 is an overall side view of the construction lift, Figure 6 is a side view of the loading platform, and Figure 7 is a side view of the loading platform.
The figure is a front view of the loading platform, Figure 8 is a plan view of the loading platform, Figure 9 is a horizontal sectional view of the gripping mechanism, Figure 10 is a vertical sectional view of the gripping mechanism, and Figure 11 A to D are transfer machines. FIG. 12 is a side view showing the loading and unloading operation of cargo using the transfer machine, and FIG. 12 is a plan view showing the connection between the transfer machine and the trailer truck. 1... Guide mast, 2... Loading platform, 2F...
Floor, 2a... Mouth, 9... Drive mechanism for lifting/lowering platform, 1
8... Vehicle body, 29... Lifting means, 29a... Loading section, LC... Loading section, T... Transfer machine.

Claims (1)

[Claims] 1. A loading platform 2 that can be raised and lowered along the guide mast 1.
A transfer machine T is provided with a drive mechanism 9 for raising and lowering the loading platform 2, and a loading unit LC is mounted on the vehicle body 18 so as to be movable up and down. In the retractably provided lift, a storage space V for storing the transfer machine T is formed below the floor 2F of the loading platform 2, and
An opening 2a for taking the transfer machine T in and out of the storage space V is formed on the floor 2F of the loading platform 2, and an opening/closing means for opening and closing the opening 2a is provided, and The lift is provided with a lifting means 29 for raising and lowering between the space V and the floor 2F of the loading platform 2. 2. The opening/closing means closes the opening 2a with the loading section LC when the transfer machine T is stored, and closes the opening 2a when the loading platform 2 of the transfer machine T is located above the floor 2F. 2. The lift according to claim 1, wherein the opening 2a is closed by a placing portion 29a for the transfer device T.