JPH09227089A - Cargo lifting/lowering conveyor and its using method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To lower the position of a cargo, easily apply force when the cargo is loaded or unloaded, and sharply reduce labor by locating a deck floor material low astride a structure. SOLUTION: A stretch member O1 is provided between a guide carriage 53 and a deck 1 to connect them, the deck 1 is located astride a structure S protruded upward from the floor surface of a building without interfering with the structure S, and a deck floor material 1B is made lower than the structure S. When the location of the deck floor material 1B is made lower than the structure S, the location of a cargo becomes low, force is easily applied when the cargo is loaded or unloaded, and labor can be reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an elevator for transporting loads, and more particularly to a transport for loading and unloading cargo from a building or the like.

[0002]

2. Description of the Related Art Conventionally, in buildings and the like, materials such as interior and exterior materials are carried in and out of a construction site, and furniture is carried in and out of a moving house, and in factories and warehouses, luggage is placed on upper floors. There are operations such as loading and unloading, but when these operations are performed manually, it is extremely heavy labor and the working efficiency is extremely poor. Therefore, there is a plan to mechanize such work.

A conventional technique of this kind is disclosed in Japanese Utility Model Publication No. 54-31686.
There is a device described in Japanese Patent Application Laid-Open Publication No. H10-209, which is an elevator for loading and unloading a load on a carrier of a vehicle, providing a guide rod extending vertically in a side portion of the carrier, and providing a load frame that moves up and down along the guide rod. In this state, the cargo is loaded with the cargo frame facing the opposite side of the cargo bed, the cargo frame is raised above the cargo bed, and then inverted (18).
In this state, the cargo is to be unloaded from the cargo frame to the cargo bed, thereby making it possible to carry out the lifting and lowering of the cargo and the unloading work smoothly. Japanese Patent Publication No. Sho 56-42315 discloses a prior art of a carry-in / ship-out box in such an elevator.

[0004] As an example of such a work of carrying in and carrying out the luggage, a description will be given below of a middle and high-rise building such as a condominium. In the interior construction work, there is a work of carrying in a system kitchen, a bath kit, and the like, and after the work is completed or when moving, a work of carrying in a refrigerator or a chest is performed.

[0005] When loading or unloading luggage to or from the upper middle floor, work is usually performed using an elevator or the like. However, when a building without an elevator or a large load is large, the building has an outdoor surface. Carrying in or out of luggage from a veranda or the like.

As an apparatus for carrying luggage from the veranda or the like, there is an elevator as shown in an overall perspective view of FIG.
The elevator L is provided with a support 51 erected by a support base 50.
And a guide truck 53 that moves up and down along a guide groove 52 provided in the longitudinal direction of the column 51, and a loading platform 54 that is supported by the guide truck 53 and moves up and down integrally. The engagement between the guide groove 52 and the guide trolley 53 is performed by providing guide rollers 55 provided above and below the guide trolley 53 so as to be rollable along the guide groove 52. A front and rear guide roller (not shown) for guiding in the direction and a left and right guide roller 55a for guiding in the left and right direction are provided.
It goes up and down along. When the wire rope 57 is wound by a driving device 56 provided at the lower end of the support column 51, the guide bogie 53 is lifted via a pulley 58 provided at the upper end of the support column 51. , The guide cart 53 is lowered via the pulley 58. Note that 54a
Is a rotation stopper of the bed 54. In addition, the height of the column 51 may be set as appropriate according to the elevation height, and is partially cut out in the drawings.

[0007] Then, as shown in the schematic diagram of the loading / unloading operation of the luggage shown in FIG. 12, the luggage W is loaded with the loading platform 54 facing the loading side F (two-dot chain line), and the wire rope 57 is driven by the driving device 56. Guide bogie 5 by winding up
3 is lifted along the column 51, and at the destination floor, the anti-rotation bracket 54a is released, so that the bed 54 is
The baggage W is rotated around to unload the luggage W toward the unloading side (building side) R. In some cases, the building side R may be the loading side.

[0008]

However, when the loading / unloading of the luggage W is performed by rotating the loading platform 54 to the unloading side of the building at the destination floor in the elevator L, the building is placed on the building side like a handrail. When there is a structure S protruding upward from the floor surface, there has been no other way but to perform the unloading work with the bottom of the carrier 54 positioned above the structure S. When carrying in or carrying out the luggage W at a position higher than the structure S of the building, it is difficult to apply force. For example, in the case of a heavy object such as a chest or a refrigerator, it is difficult to apply force. Loading and unloading operations are heavy labor.

[0009]

Therefore, in order to solve the above problems, the invention according to the present application provides an overhang member between the guide cart and the carrier to connect the carrier to the floor from the floor. The structure is arranged so as to straddle the structure without interfering with the structure protruding upward, and the loading floor material can be positioned lower than the structure. Since the position of the load is also lowered by lowering the bed material on the structure so as to straddle the structure, it is easy to apply force when loading and unloading the load, thereby greatly reducing labor.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to the present application has a guide truck that moves up and down along a support, and a carrier that engages with the guide and moves up and down, and loads the carrier with the support as a boundary. In a luggage elevating transporter that can be turned around the column from the side and directed to the unloading side, an overhang member is provided between the guide cart and the loading platform to separate the loading platform from the guiding truck,
The loading floor material is located a predetermined distance below the lower end of the overhang member.

As described above, by providing the projecting member between the guide cart and the loading platform, the loading platform overhangs over the structure of the building in a state where the loading platform is directed to the unloading side, and the building platform is overhanged. Because the floor material is located at a predetermined distance below the lower end of the overhang member, the overhang member interferes with the structure of the building even if the floor material is close to the floor of the building. Can be formed, and the loading / unloading position of the baggage can be lowered, so that force can be easily applied at the time of loading / unloading.

If the overhanging member is configured to be detachable from the guide cart and the carrier, if there is no building structure, the overhanging member is removed and the carrier is directly provided on the guide carrier. The load can be increased by reducing the height.

[0013] Further, if the loading floor material is configured to be vertically adjustable, the height of the loading floor material can be adjusted according to the size of the load or the height of the structure.

Furthermore, if the overhang member is provided with a connecting frame which can be extended and contracted in the direction in which the guide cart and the carrier are moved closer to or away from each other, the amount of overhang is reduced when the carrier is raised, and the carrier is unloaded. The loading platform can be extended so that it does not touch the building structure in the state of facing up, so that even if the loading weight is increased, the stability increases when going up and down, and the overhang amount can be adjusted according to the work place it can.

Further, if a pair of telescopic members are provided on the connecting frame and telescopic guide means for expanding and contracting the telescopic members in synchronism are provided, the telescopic guide means synchronize the pair of projecting members to expand and contract. Can be done.

In addition, in any of these configurations,
After lifting the loading platform loaded with luggage from the loading side along the columns vertically, stopping the loading platform in a state where it is positioned above the structure that projects upward from the floor of the unloading floor building Rotating the loading platform around the support column toward the loading / unloading side, lowering the loading platform to form a gap that does not interfere with the structure, and positioning the loading platform on the building side so as to straddle the structure; If the cargo is unloaded after being positioned lower than the structure, the labor for loading and unloading the cargo can be reduced and the work can be easily performed.

[0017]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the invention according to the present application will be described below with reference to the drawings. FIG. 1 is an overall perspective view of a first embodiment showing a luggage lifting carrier of the invention according to the present application, and FIG.
FIG. 3 is a side view showing a main part of FIG. 1, and FIG.
FIG. 4 is a view along arrow B-B, and FIG. 5 is a view along arrow C-C. The same components as those of the conventional elevator L shown in FIG. Also in FIG. 1, a column whose height is appropriately set according to the elevation height is partially cut and described.

As shown in the drawing, a support column 50 supported by a support table 50 has a guide groove 52 serving as a vertical guide means.
The guide groove 52 is formed in the guide groove 52.
Is provided so as to be able to move up and down. The carrier 1 is provided at the front of the guide cart 53, and is configured to be able to move up and down integrally with the guide cart 53. The bed 1 has a vertically longer shape than the conventional bed 54 (FIG. 1).
In a side view, a substantially vertical connecting member 1A and a substantially horizontal floor member 1
And B form a substantially L-shape.

The guide groove 52 of the support column 51 and the guide carriage 5
The engagement with the guide truck 3 is performed by providing guide rollers 55 provided above and below the guide cart 53 so as to be rollable along the guide grooves 52, and a front-rear guide for guiding in the front-rear direction along the guide grooves 52 A roller 55b and a left and right guide roller 55a that guides in the left and right direction are provided so that the guide cart 53 is moved up and down along the column 51.

A driving device 56 is provided on the back of the support table.
(Electric winch) is provided, and a wire rope 57 wound or fed out by the driving device 56 is connected to an upper end fitting 53a of the guide cart 53 via a pulley 58 provided at the upper end of the support. Wire rope 57
The guide bogie 53 rises and the wire rope 57
, The guide cart 53 is lowered.

Further, a luggage fixing ring 1b is provided around the luggage carrier 1 so that luggage placed on the luggage carrier 1 can be securely fixed by a rope or the like passed between the luggage securing rings 1b. . 56a is a control switch of the driving device 56, and 58a is a wire rope 5
8 is a stopper metal fitting. A limit switch for controlling the upper and lower limits of the guide cart 53 is provided inside the support base 50.

[0022] In the invention according to this application, overhanging member O ₁ is provided between the guide carriage 53 and the loading platform 1, the overhanging member O _1, said from the lower end to a predetermined distance downward It is provided so that flooring 1B may be located. Therefore, with the overhanging member O ₁ , a gap is formed so as not to interfere with the building structure in a state in which the loading platform 1 is directed to the unloading side R, and is positioned on the building side.
B can be brought closer to the floor of the building. That is, the carrier 1 overhangs over the building structure and is located on the building side, and the carrier floor material 1B comes close to the floor surface.

The overhang member O ₁ in the first embodiment is
It is composed of a support frame 2 provided at the front of the guide cart 53 and a connection frame 3 for connecting the carrier 1 to the support frame 2.
The connection frame 3 is formed as an integral frame by connecting a pair of left and right side members 3a with a reinforcing member 3b. Rotating shafts 5 provided at the ends of support fittings 4 provided at two positions in the upper and lower portions of the center rear portion of the support frame 2 are provided on the side of the guide cart 53 (in this figure, the near side in the drawing). Support member 53b
And a support ring 2 provided at a front portion of the support frame 2.
The support shaft 3c provided at the rear part of the connection frame 3 is inserted into a, and the support shaft 1c provided at the rear part of the connection member 1A of the carrier 1 is inserted into the support ring 3d provided at the front part of the connection frame 3. ing.

Therefore, the supporting frame 2, the connecting frame 3 and the luggage carrier 1
Are connected without changing the positional relationship, and all of them are rotated around the support column 51 (in the direction of the arrow v) about the support member 53b of the guide cart 53 by the rotation shaft 5 of the support frame 2. Can be. Note that the rotating shaft 5 of the support frame 2 is connected to the opposite side of the guide cart 53 (the side facing the paper in FIG.
Can be rotated around the support column 51 in the direction opposite to the drawing by inserting the support member 53b provided on the side indicated by the two-dot chain line).

A rotation stopper 2b is also provided in the center of the support frame 2 in the lateral direction, and a claw member 2c provided symmetrically with respect to the center in the width direction is provided on both sides of the guide cart 53. The support frame 2, that is, the loading platform 1 is fixed so as not to rotate by being locked in the locking hole 53 d of 53 c. By providing the claw member 2c symmetrically with respect to the center in the width direction, even if the carrier 1 is supported in either the left or right direction of the guide cart 53, one claw member 2c is locked by one of the locking members 53c. 53d.

Further, in the first embodiment, the overhanging member O
_The supporting frame 2 and the connecting frame 3 constituting
and detachable by inserting the support shaft 3a of the insert and the support ring 2a of the rotary shaft 5 to b, also projecting member O ₁ and the loading platform 1 and simply support shaft to the support ring 3b of the connecting frame 3 also since you are detachable by insertion of 1c, guiding the support shaft 1c of the loading platform 1 by removing the overhanging member O ₁ dolly 53
The support member 53, the rotation shaft 7 and the rotation stopper 1a are also provided at the rear of the carrier 1.

According luggage lifting carriage M ₁ of the first embodiment having such a configuration, it is possible to transport the cargo as shown in the schematic diagram of FIG.

That is, the luggage W is loaded on the flooring 1B with the luggage carrier 1 facing the loading side F, and the luggage W is fixed to the luggage carrier 1 by using the luggage fixing ring (see FIG. 1). The carrier 1 was raised vertically by raising the carriage 53 along the guide groove 52 of the column 51, and stopped when the floor material 1B of the carrier 1 was positioned above the building structure S on the unloading floor. Thereafter, the loading platform 1 is rotated around the column 51 with the column 51 as a boundary, and is directed to the unloading side R. At this time, the loading platform 1 is brought into position on the building side overhanging so as to straddle the structure S of the building by the overhanging member O _1.
If the guide cart 53 is lowered from this state, the loading floor material 1B can be positioned lower than the upper part of the structure S and located near the floor surface. At this time, not that it interferes because between the overhanging member O ₁ and the structure S predetermined gap is formed.

By lowering the floor material 1B of the loading platform 1 below the upper part of the building structure S and near the floor surface in this way, the unloading operation can be performed in a stable posture, so that the load W
When holding, it is easy to apply force, and even if it is heavy, it can be held relatively easily. This is the same in the loading operation of the load, and the posture on the loading / unloading operation is stabilized, so that the burden on the waist of the worker can be reduced.

In the first embodiment, the overhanging member O ₁
The connection between the support frame 2 and the guide truck 53 and the connection between the connection frame 3 and the carrier 1 are achieved by simply inserting the shaft from above. Therefore, the support frame 2 and the connection frame 3 are removed and the carrier 1 is removed. The rotating shaft 7 is supported by the support member 53 of the guide cart 53.
b, it is possible to form the conventional elevator L shown in FIG. 11, and if there is no structure S projecting upward from the floor of the building, the loading weight of the load W Work can be carried in or out by the work of increasing the size. In this case, the procedure for lowering the bed 1 can be omitted.

Next, a second embodiment will be described with reference to FIG. 7 which is a side view of a main part showing a second embodiment of the invention according to the present application, and FIG. The same components as those in the first embodiment are denoted by the same reference numerals, and description thereof will be omitted.

As shown in the drawing, in the second embodiment, the overhang member O ₂ is configured to be extendable and contractible,
A support frame 9 similar to the support frame 2 in the first embodiment is provided at a front portion of the support frame 3, and an extendable connection frame 10 for connecting the carrier 8 to the support frame 9 is provided. Also in this embodiment, when viewed from the side, the cargo bed 8 is formed into a substantially L-shape by the substantially vertical connecting member 8A and the substantially horizontal floor material 8B, and the cargo bed floor material 8B is predetermined from the lower end of the overhanging member O _2. It is formed so as to be located below the distance. The connection frame 10 is configured by providing a pair of link members 10a on the left and right that intersect with each other at a central support shaft.
The lower end of the supporting frame 9 is rotatably supported on the supporting frame 9 by a shaft 9a, and the upper end is configured to be vertically movable along a guide groove 9b formed in the supporting frame 9.

The lower end of the link member 10a on the loading platform side is rotatably supported on the loading platform 8 by a shaft 8a, and the upper end thereof is loaded on the loading platform 8a.
Is formed so as to be able to move up and down along a guide groove 8b formed at the bottom. The pair of link members 10a are connected by a reinforcing member 10b. Further, a guide cylinder 11 is provided between the support frame 9 and one of the link members 10a, and is configured to guide the expansion and contraction of the link member 10a. In addition, 12 is a link member 10a.
Is locked when the carrier 8 is contracted, and is engaged with a stopper 8c provided on the carrier 8 when the carrier 8 moves up and down.

Therefore, the link member 10a can be contracted by pushing the carrier 8 toward the support frame 9, and the link member 10a can be extended by pulling the carrier 8 away from the support frame 9.

Further, a side view of a main part shown in FIG. 9 and FIG.
The bulging member O ₃ of the third embodiment, which is configured to be expandable and contractable similarly to the second embodiment, will be described below based on the EE arrow view shown in FIG. In the third embodiment as well, a support frame 14 is provided at the front of the guide cart 53, and the support frame 14 and the loading platform 13 are connected by an extendable connection frame 15. This connection frame 15 is also connected only to the upper part of the bed 13. The connecting frame 15 is formed by a pair of upper and lower bending members 15a.
Are provided on the left and right sides, and these bending members 15a can be folded inward by bending the bending members 15a inward at hinge portions provided in the center portion.
The connection between the bending member 15a and the supporting frame 14 is performed by a hinge fitting 15b provided at an end of the bending member 15a.
The connection between 5a and the bed 13 is also performed by a hinge 15c provided at the end of the bending member 15.

Therefore, the bending member 15a can be folded by pushing the carrier 13 against the support frame 14, and the bending member 15a can be extended by pulling the carrier 13 away from the support frame 14.

Although not shown in the third embodiment, if mechanical screw type guide means such as a jack is provided between the bending members 15a, the left and right bending members 15a are mechanically synchronized with each other. Since it can be configured to be folded or stretched, it is possible to configure the extension / contraction guide means that allows reliable extension / contraction operation, and is mechanically screwed, and has few failures.

According to the load carrying devices M ₁ and M ₂ of the second and third embodiments configured as described above, the load can be transported in the same manner as the schematic diagram of FIG.

That is, when loading the load W with the loading platforms 8, 13 facing the loading side F, the link member 10a or the bending member 15a is contracted, and in this state, the loading floor material 8B, 13B The loaded luggage W is fixed to the loading platforms 8 and 13 using a luggage fixing ring (see FIG. 1). Then, the carriages 8, 13 are raised vertically by raising the guide trolley 53 along the columns 51, and the loading floors 8B, 13B are unloaded in a state in which they are located above the structure S of the building on the unloading floor. After stopping, the loading platforms 8 and 13 are turned around the support columns 51 to face the unloading side R. After that, the link members 10a or the bending members 15a are extended, and the loading platforms 8, 13 are positioned on the building side so as to overhang the structure S of the building. Then, by lowering the guide carriage 53, the cargo bed floor materials 8B and 13B are lowered below the upper portion of the structure S of the building and brought closer to the building floor surface. At this time, the overhang members O ₂ and O ₃ are provided so that the loading floor members 8B and 13B are located a predetermined distance below the lower ends thereof.
With the overhanging members O ₂ and O ₃ , the loading platforms 8 and 13 are positioned on the building side while facing the unloading side R so as to form a gap so as not to interfere with the building structure S. , 13B can be brought close to the floor of the building.

Therefore, in the second and third embodiments, as in the first embodiment, the loading and unloading work can be performed with the loading floor members 8B and 13B lowered to near the floor surface. Loading and unloading work can be performed in a posture, and the load on the waist of the worker can be reduced by stabilizing the posture during the loading and unloading work.

As in the second and third embodiments, the support 5
When the guide truck 53 is moved up and down along the
Is closer to the guide trolley 53, the moment acting on the column 51 at the time of ascent and descent can be reduced, so that the amount of deflection of the column 51 can be reduced. Further, the column 51 and the structure of the building are usually used on the unloading floor. S is connected by a support bracket t, so that the loading platform 8, 1 is unloaded at the time of unloading.
Since the bending force acting on the support column 51 is small even if the extension 3 is extended, the load weight of the load W on the loading platforms 8 and 13 can be increased as in the related art.

In the second embodiment, the guide cylinder 11 is used as the expansion and contraction guide means of the expansion and contraction member 10. However, this guide cylinder 11 may have another structure, and smoothly expands and contracts the link member 10a. Any means can be used as long as it guides the user. Also, the mechanical guide means in the third embodiment may be any means that can extend and contract the synchronized bending members 15a provided on the left and right in addition to the jack.

[0043] Further, in any of the embodiments described above, the amount of lowering the loading platform 1 straddling the structure S is a be adjusted by feeding amount of the wire rope 57 by the driving motor 56, the lower surface of the projecting member O ₁ May be provided with a proximity switch or the like that automatically stops the driving device 56 when the vehicle reaches a predetermined distance from the structure S.

[0044]

The invention according to this application is implemented in the form described above, and has the following effects.

An overhanging member provided between the guide cart and the loading platform allows the loading platform to be positioned on the building side without interfering with the structure of the building when the loading platform is directed to the unloading side. Since it can be positioned lower than the object and located near the floor, the posture is stabilized when carrying the luggage, and the force is easily applied, so that the labor required for the work can be greatly reduced.

In particular, if the overhanging member is configured to be detachable from the guide cart and the carrier, if the overhanging member is removed and the carrier is directly attached to the guide carrier, the overhang length of the carrier is reduced.
As in the related art, it is possible to perform a lifting operation with a large load weight of the load.

Further, if the loading floor material is configured to be vertically adjustable, the height of the loading floor material can be adjusted according to the size of the load or the height of the structure. The luggage can be positioned at a height where the unloading operation is easy.

Further, by providing an extendable connecting frame on the overhanging member, the work can be performed with the overhanging member contracted when performing operations other than unloading. As a result, the stability at the time of lifting and lowering increases, and the lifting and lowering operation with a large load weight of the load can be performed as in the related art.

Further, if the expansion and contraction guide means is provided on the expansion and contraction member, reliable expansion and contraction work can be performed smoothly.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a first embodiment showing a luggage elevating transporter of the invention according to the present application.

FIG. 2 is a side view showing a main part in the first embodiment of FIG.

FIG. 3 is a view taken in the direction of arrows AA shown in FIG. 2;

FIG. 4 is a view taken in the direction of arrows BB shown in FIG. 2;

FIG. 5 is a view taken in the direction of the arrows CC in FIG. 2;

FIG. 6 is a schematic diagram showing a loading / unloading operation of a load by the load lifting device according to the invention of the present application;

FIG. 7 is a side view of a main part showing a second embodiment of the invention according to this application.

FIG. 8 is a view as viewed in the direction of arrows DD shown in FIG. 7;

FIG. 9 is a main part side view showing a third embodiment of the invention according to the present application.

FIG. 10 is a view as seen in the direction of arrows EE shown in FIG. 9;

FIG. 11 is an overall perspective view showing a conventional elevator.

FIG. 12 is a schematic view showing a loading / unloading operation of a load by the elevator shown in FIG. 11;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Carrier 1A ... Connecting material 1B ... Carrier floor material 1a ... Rotation stopper 2 ... Support frame 2a ... Support ring 2b ... Rotation stopper 3 ... Connection frame 3a ... Side member 3b ... Reinforcement member 3c ... Support shaft 3d ... Support ring 4 , 6 ... Supporting brackets 5, 7 ... Rotating shaft 8 ... Carrier 8A ... Connector 8B ... Carrier floor 8a ... Support shaft 8b ... Guide groove 9 ... Support frame 9a ... Support shaft 9b ... Guide groove 10 ... Connection frame 10a ... link member 11 ... guide cylinders 12 ... locking part 13 ... loading platform 13A ... connecting member 13B ... loading platform flooring 14 ... supporting frame 15 ... connecting frame 15a ... bending member t ... support bracket _{O 1, O 2, O 3} ... pier Member M ₁ , M ₂ , M ₃ … Luggage lifting carrier 50… Support 51… Post 52… Guide groove 53… Guiding trolley 54… Loading pallet 55… Guide roller 56… Driver 57… Wire rope 58… Pulley L…

Claims (6)

[Claims] 1. A guide truck that moves up and down along a support, and a carrier that engages with the guide and moves up and down together. The carrier is rotated around the support from the loading side with the support as a boundary. A luggage elevating transporter that can be directed to the unloading side, wherein an overhanging member is provided between the guide cart and the luggage carrier, the luggage carrier is separated from the guide cart, and the luggage floor material is predetermined from the lower end of the overhang member. A carrier for lifting and lowering luggage, which is located below the distance. 2. The load carrying device according to claim 1, wherein the overhanging member is configured to be detachable from the guide cart and the carrier. 3. The cargo lifting / lowering carrier according to claim 1 or 2, wherein the cargo bed floor material is configured to be adjustable in vertical position. 4. The overhanging member according to claim 1, wherein a connection frame is provided on the overhanging member so as to be able to expand and contract in a direction in which the guide cart and the cargo box approach or separate from each other. Cargo for lifting cargo. 5. The luggage elevating carrier according to claim 4, wherein a pair of telescoping members are provided on the connecting frame, and telescoping guide means for synchronizing the telescoping members are provided. Transporter. 6. A state in which a loading platform loaded with luggage from the loading side is vertically raised along a column, and the loading platform is located above a structure projecting upward from a floor of a building on an unloading floor. After stopping at the position, the loading platform is rotated around the column and directed to the unloading side, and the loading platform is lowered to form a gap that does not interfere with the structure, and is positioned on the building side so as to straddle the structure. A method of using the cargo lifting / lowering device, further comprising lowering the loading platform floor material below the structure and then unloading the cargo.