JP3424809B2 - Article lifting device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pair of article supports that are vertically moved up and down between a position on the road surface side and a position above the road surface side, and individually corresponding to each of the article supports. A pair of lifts provided to support the article support and move up and down, and a pair of lifts so that the pair of article supports are moved up and down while maintaining the same or substantially the same height. The present invention relates to an article raising / lowering device provided with a raising / lowering drive means for raising / lowering in a synchronized state.

[0002]

2. Description of the Related Art An article lifting apparatus having such a structure is used in an automatic warehouse or the like, and an article is placed between a pair of article supports and is driven up and down by a lifting drive means.
This is for raising and lowering the article placed on the article support.

Conventionally, in this type of lifting device, for example, an X-shaped link rotatably and pivotally connected by pin coupling is located below a lifting frame having an article support, and one of the links is placed. And the elevating frame are pivotally connected by pin connection, a roller is attached to the other link to contact the lower surface of the elevating frame, and the elevating frame is elevated and lowered through the X-shaped link. It is widely used that the article support is vertically moved up and down by a link mechanism by pin connection (for example, JP-A-9-
No. 12284).

[0004]

However, in the case where the article support is moved up and down by the link mechanism by the pin connection,
Since the load of the article placed on the article support acts on the plurality of connecting pins as it is, it is not suitable for raising and lowering a too heavy article, and rattling is likely to occur at the pin coupling portion due to use, It has the drawback that it cannot move up and down stably and smoothly. In that case, if the pin itself is made to be strong and sturdy, it is possible to lift and lower a heavy article, but this has a drawback that the whole device becomes large and the manufacturing cost becomes high.

The present invention focuses on such a conventional problem, and an object thereof is to make the apparatus itself a relatively simple structure and to stably move a heavy article up and down. It is to provide an article lifting device that is less prone to play even after many years of use.

[0006]

In order to achieve the above object, according to the invention as set forth in claim 1, each of the pair of vertically movable article supports is a column-shaped guide that is erected on the road side. Since it is movably guided and supported in the vertical direction by the means, the article support can be smoothly moved up and down, and in addition, the lifting and lowering body which supports the article support and moves up and down in the vertical direction. Since it is composed of wound cords, it is possible to reliably raise and lower the article support by using cords such as chains and wires, and to smoothly raise and lower even heavy articles. it can. In this way, the columnar guide means and the simple structure of the cord such as the chain can reduce the manufacturing cost, and, unlike the conventional link mechanism, do not have many pin connecting portions. There is little backlash due to use, and smooth use is possible over many years.

Further, according to the invention described in claim 1 , each of the pair of article supports is formed in an elongated shape, and the guide means guides and supports both end sides of each of the pair of article supports. Since the elevating body is configured to support the central portion in the longitudinal direction of the article support body, only one cord-shaped body as the elevating body is required for each of the pair of article support bodies. Moreover, by the guiding action of the guide means on both ends in the longitudinal direction, each article support can be smoothly moved up and down without being twisted.

According to the invention described in claim 1, the road
A base frame installed on the surface is provided, and the guide means and
The lower winding part that winds the lower side of the lifting body is the base frame.
And an upper winding part that is installed on the upper side of the lifting body
However, since it is supported by the guide means,
Easy installation work and installation work on the road surface,
It can be done reliably. In other words, the base installed on the road surface
The guide means and the lower winding part of the lifting body are installed on the frame.
Then, the guide means installed on the base frame winds the lifting body upward.
Since the rotation part is supported, the guide frame is used as a reference.
It is possible to assemble the winding means and the upper and lower winding parts,
It is easy to determine the positional relationship between materials, and assembly work is easy.
Easy and reliable, and the installation position of the base frame on the road surface
Guide means and its guide means
Position of the article support guided and supported by the road surface
All the staff will be decided, and the installation work of the lifting device will be easy.
Easy and reliable.

According to the invention described in claim 2, the guy
Means for guiding and supporting both end portions of the article support.
The guide support part of the inside of both ends of the article support.
Since it is provided by placing it on each of the pair of article supports,
The cord in the center of the longitudinal direction
The guide means are located on both sides, and
The guide supports should be located inside both ends of the article support.
And, compared to the article support, guide the article support
In addition, the mechanism for raising and lowering becomes compact, and the installation area is reduced.
However, as mentioned above, the article support is
It can move up and down smoothly.

According to the third aspect of the present invention, the elevating and lowering driving means is composed of a driving means for vertically elevating and driving a pair of elevating bodies, and a control means for operating the driving means in a synchronized state. Since the lifting drive means corresponding to one of the article supports can be treated as one unit and the other one can be handled as another unit, installation work of the lifting device can be further facilitated, and yet a pair of lifting bodies can be used. Since the synchronization between the above is reliably maintained, and further, the driving means that constitutes each lifting / lowering driving means is installed on the base frame to drive and rotate the lower winding portion, the guide described above is provided. In addition to the means, the assembling work of the elevating drive means can be performed easily and surely.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of an article lifting device according to the present invention will be described with reference to the drawings. Such an article lifting device is used in an automated warehouse or the like, and as shown in FIGS. 1 and 2, the article storage shelves 2 having a plurality of article storage units 1 in the up-down direction and the left-right direction are mutually connected. With the fronts facing each other, they are installed in pairs on the floor surface F, and a rail 3 for a stacker crane is laid linearly on the floor surface F between the paired article storage shelves 2. A stacker crane 4 that moves along the rail 3 is provided so as to be able to automatically travel along the frontage of the article storage rack 2. The stacker crane 4 is provided with an up-and-down table 5 that can be vertically moved up and down, and the up-and-down table 5 expands and contracts to the side of the article storage section 1 located on both sides to place the pallet P on which the article A is placed.
A fork-type transfer device 6 for transferring and transferring the pallets P together is provided.

On one side of the loading / unloading side of the article storage rack 2, a pair of left and right relay truck rails 7 are laid in a straight line on the floor surface F in parallel with the stacker crane rail 3. A relay carriage 8 that automatically travels on the pair of left and right rails 7 is provided, and the relay carriage 8 is configured to reciprocate between the shelf side transfer position X and the external side transfer position Y. There is. The relay truck 8 includes a pair of left and right drive wheels 9 that roll on a pair of left and right rails 7 and an idle wheel 10. The traveling electric motor 1 for driving the drive wheels 9 in the forward and reverse directions.
1 is also provided, and at the four corners of the upper surface thereof, there are provided fixed pedestal type article support bases 12 that spread outward toward the upper side and mount and support the pallet P while guiding it.

At the shelf-side transfer position X, the fork type transfer device 6 provided on the stacker crane 4 expands and contracts to transfer the article A placed on the article support base 12 of the relay carriage 8. The pallet P is scooped up and transferred onto the lifter 5 of the stacker crane 4, and then the stacker crane 4 is self-propelled, the lifter 5 is moved up and down, and the fork type transfer device 6 is expanded and contracted. The article A together with the pallet P is placed in and carried into each article storage section 1 of the article storage shelf 2, or conversely, the article A is taken out from each article storage section 1 and conveyed, and at the shelf side transfer position X, a relay cart 8 is configured to be transferred together with the pallet P on the article support base 12.

The relay truck rail 7 is extended to the lateral side of the control box 13 installed at the center of the loading / unloading side of the paired article storage shelves 2, and the control box 1 thereof is provided.
The lateral side of 3 is set to the external transfer position Y,
At the external transfer position Y, a relay lifting device 14 is provided as an article lifting device that lifts and lowers the article A together with the pallet P. As shown in FIGS. 3 and 4, the relay lifting device 14 has two columns 15 on the left side and two columns 15 on the right side when viewed from the direction along the rail 7 for the relay truck in a state along the rail 7. And left and right 2
Article support 1 that moves up and down with respect to the column 15 of the book
6 are provided respectively. The left and right article supports 16 and associated devices are different between left and right, but there is almost no difference in structure, so in the following, one article support 16 will be described. Only the description will be given, and the parts having different structures on the left and right will be described each time.

As shown in FIG. 9, each of the two columns 15 is formed of a hollow metal mold member having a rectangular cross section, and a base plate 17 as a base frame is fixed to the lower end portion of the base plate 17. Anchor bolt B through 17
Are vertically erected and fixed on a floor surface F as a road surface, and their upper ends are connected to each other by a metal channel-shaped connecting member 18 arranged in the horizontal direction. An elevating frame 19 that moves up and down along the longitudinal direction of the column 15 is arranged on each column 15. A plurality of idle guide rollers 20 provided on the frame 19 are provided on the column 15 having a rectangular cross section. Contacting both sides of the short side of the
A plurality of slide members 21 provided on the inner surface of the pillar 15 so as to contact the inner surface of the long side of the pillar 15 and slide.
Both lift frames 19 that move up and down along the pair of columns 15.
The article support 16 described above is attached over the space.

The article support 16 is formed in a substantially L-shape in a lateral side view and is rectangular in a plan view, that is, is formed of a sheet metal so as to have an elongated shape. Is further configured to project to the outside, and at both ends in the longitudinal direction thereof, the column 15, the elevating frame 19, the guide roller 20, and the slide member 21.
It is guided and supported movably in the vertical direction by a guide means G composed of the above. In other words, since the guide means G includes the pillar 15, it functions as a columnar guide means standing on the base plate 17, and the two pillars 15 guide both end portions of the article support body 16. The pair of columns 15 function as a pair of guide supporting portions for supporting, and are arranged so as to be located inside both ends of the elongated article support 16 in the front-rear direction. Then, as shown in FIGS. 5 to 8, a bracket plate 23 is fixed to the central back surface of the article support body 16 in the longitudinal direction, and a pair of connecting members 24 is fixed to the bracket plate 23. The connecting members 24 are provided with connecting elongated holes 25 each having a length L1 in the up-down direction so as to face each other.

A pair of brackets 26 are attached to the central upper surface of the connecting member 18 in the longitudinal direction, and bearings 27 are attached to the brackets 26, respectively. An idle sprocket 28 is rotatably held. Both bearings 27 have four elongated holes 2 formed in the bracket 26 and long in the vertical direction.
The bolts 30 inserted into the shaft 9 are movably held in the vertical direction, and the bearings 27 are forcibly moved upward by the adjusting bolts 31 screwed to the connecting member 18. A drive sprocket 33 as a lower winding portion, which is rotatably held by a pair of bearings 32 mounted on the base plate 17, is positioned at a lower position corresponding to the idle sprocket 28. One endless chain 34 as a cord is wound around the free-moving sprocket 28, and the adjustment bolt 31 removes looseness of the chain 34 so as to apply a constant tension. .

A connecting block 35 is interposed on the side of the chain 34 located inside of the endless chain 34, and connecting pins 36 are provided from both sides of the connecting block 35.
Are provided so that each connecting pin 36 is connected to the connecting member 2
4 is inserted into the connecting elongated hole 25. Then, the drive sprocket 33 is rotatably driven by the electric motor 37 for raising and lowering equipped with a speed reducer as the drive means installed on the base plate 17, and the connecting block 35 is moved upward as the chain 34 moves, Both connecting pins 36 are configured to come into contact with the upper ends of the two connecting elongated holes 25 to raise the article support 16. When the electric motor 37 for raising and lowering is reversely driven to move the connecting block 35 downward with the movement of the chain 34, the article support 16 is lowered and the article support 16 is placed on the floor surface F. Even in the contact state, the connecting pin 36 is configured to be able to move downward in the connecting elongated hole 25 so that the article support 16 is brought into contact with the floor surface F.

That is, the chain 34 functions as an elevating body that supports the article support 16 and moves it up and down.
The connecting pin 36 of the connecting block 35 and the connecting member 24
Each of the article support members 16 is
Are supported by the respective chains 34 so that the relative movement to the lower side is disabled and the relative movement to the upper side is enabled, and each article support 16 is supported by the contact with the floor surface F. The descending range is configured to be received and regulated.

A limit switch bracket 38 for restricting the downward movement of the connecting block 35 is positioned near the lower moving path of the upward / downward moving path of the connecting block 35, and is mounted on the base plate 17. Installed. On the limit switch bracket 38, there are a lowering limit switch 40 having an idler roller 40a, an emergency stop lower limit switch 41 having an idler roller 41a, and a lowering limit switch 40. It is attached to the chain 34 while being positioned upward and with a length L2 shorter than the length L1 of the connecting long hole 25 therebetween, and being vertically displaced. The coupling block 35 is provided with a dog 42 that comes into contact with the idle rollers 40a and 41a of the limit switches 40 and 41. Although not shown,
In the vicinity of the moving path above the coupling block 35, a limit switch for rising limit and an upper limit switch for emergency stop similar to the limit switch for lowering limit 40 and the lower limit switch for emergency stop 41 are provided, and both of these limits are provided. The dog 42 is also configured to be able to contact the idle roller of the switch.

The motor shaft 45 of the elevator electric motor 37 with a reduction gear extends beyond the drive sprocket 33 attached to the motor shaft 45 to the opposite side of the elevator electric motor 37, and its extension end. A disk 46 is attached to the portion so that the disk 46 rotates integrally with the motor shaft 45. As shown in FIG. 10, the disk 46 has two cutouts in the outer peripheral portion, and tooth portions 46a and non-toothed portions 46b are alternately located on the outer peripheral portion of the disk 46. Is configured. Then, a horseshoe-shaped photo sensor 47 for detecting the tooth portion 46a and the toothless portion 46b of the disc 46 is arranged in a state of straddling the disc 46,
The photo sensor 47, which is fixedly held by a bracket 48 attached to the base plate 17, turns ON when the tooth portion 46a is detected as the disk 46 rotates, and turns OFF when the toothless portion 46b is detected. Is configured to generate.

As shown in FIGS. 1 and 2, of the two sides of the relay carriage 8 along the moving path, both sides of the outside transfer position Y are covered by the back plate 49 of the relay lifting device 14. On the side opposite to the control box 13, which is covered, the wire netting 50 includes the shelf-side transfer position X, and on the side on the control box 13 side, the shelf-side transfer position X is set. The wire nets 50 are provided in the state of being excluded, and the relay truck 8 and the article A on the relay truck 8 are provided by the guard plate 51 of the back plate 49 and the wire net 50 of the relay lifting device 14.
Is configured to cover the side surface of the. That is, at the shelf-side transfer position X, the fork-type transfer device 6 of the stacker crane 4 transfers the article from the side of the control box 13 side to the relay carriage 8, and the external transfer position. Y
In the above, the article is transferred from the front along the relay truck rail 7 to the relay lifting device 14, and the movement path side surface of the other relay truck 8 is the guard member 5
1, and the rear surface of the shelf-side transfer position X is the article storage shelf 2
It is covered by.

The operation of the automatic warehouse having such a structure is controlled by the control device H as a control means using a microcomputer housed in the control box 13 and stored in the article storage rack 2. Article A
Is managing. Therefore, this control device H is shown in FIG.
As shown in FIG. 3, a stacker crane control device for controlling the stacker crane 4 and a relay truck control device for controlling the relay truck 8 are configured to be able to communicate with each other, and are provided on the upper surface of the control box 13 (not shown). And the operation panel 52 provided on the relay lifting device 14 (see FIG. 2)
The limit switches 40, 41 are configured to control various devices based on an operation command from the limit switches 40, 41.
And the detection information of the photo sensor 47 and the like are all input.

Next, the control operation of the automatic warehouse by the controller H will be described. When the article A is stored in the article management shelf 2, the fork 53a of the hand lifter 53 is inserted into the fork insertion hole of the pallet P on which the stored article A is placed, and the hand lifter 53 moves the article A to the relay lifting device 1
4, and the operation device provided on the upper surface of the control box 13 is operated to input necessary information regarding the stored article A. Then, based on the input information, the control device H selects the article storage rack 2 and the article storage unit 1 that store the article A. Before or after the operation of the operating device, the stored article A is placed by the hand lifter 53 together with the pallet P over the article supports 16 on the left and right of the relay lifting device 14. When the article A is placed by the hand lifter 53, the article supporters 16 are operated as described later in detail.
Since it is in contact with the floor surface F, the pallet P
It does not need to be raised so much and can be placed relatively easily.

When the placement on the article support 16 is completed, the hand lifter 53 is retracted and an operation start is commanded by the operation panel 52 provided on the relay lifting device 14,
The left and right lifting electric motors 37 are driven synchronously. That is, in order to lift and lower the pair of article supports 16 at substantially the same height by the lifting and lowering electric motor 37 and the control device H, a lifting and lowering drive unit that drives and lifts the pair of chains 34 in a synchronized state is provided. The connecting block 3 is configured as the chain 34 is moved by the rotation of the drive sprocket 33.
5 moves upward and both connecting pins 36 are connected to the connecting member 2
It contacts the upper surface of the connecting long hole 25 of FIG. By moving the connecting block 35 upward as it is, the left and right article supports 16 are lifted and ascend in a synchronized state, and in conjunction with the ascent of the article supports 16, the relay truck 8
The traveling electric motor 11 is driven, and the relay truck 8 moves to the outside transfer position Y side along the rail 7.

A dog 42 provided on the connecting block 35
However, when it comes into contact with the free-running roller of the limit switch (not shown) for raising, the electric motor 37 for raising and lowering stops and the left and right article supports 16 stop at a predetermined upper position. While the article support 16 is being raised, the control device H is comparing the pulses from the left and right photosensors 47, and if there is a deviation of a certain amount or more between the two pulses, that is, for some reason, the left and right When the article support 16 stops rising at the same speed, an alarm device (not shown) is activated to stop the rise of the article support 16. And, although the dog 42 abuts on the idler roller of the limit switch for ascending limitation,
When the electric motor 37 for raising and lowering does not stop, the control device H activates the alarm device and the electric motor 37 for raising and lowering is operated in accordance with the contact of the emergency stop upper limit switch of the dog 42 with the idler roller. To stop.

When the left and right article supports 16 stop at a predetermined upper position, the relay carriage 8 enters below the pallet P lifted by the article supports 16 and predetermined information is obtained from a sensor (not shown). After being stopped at the position, the pallet P is lowered together with the article support 16 by the reverse rotation drive of the lifting electric motor 37, and the controller H compares the pulses from the left and right photosensors 47 even during the lowering. is doing. As shown in FIG. 4, the relationship between the article support 16 and the article support 12 is such that the length of the article support 16 in the front-rear direction is greater than the distance between the pair of article support 12 positioned in the front-rear direction. Since it is short and enters the inside between the pair of front and rear article support bases 12, the four corners of the pallet P are guided by the article support bases 12 of the relay carriage 8 as the article support body 16 descends. Then, the article support 16 is placed and held on the article support base 12, and the article support body 16 descends as it is. After that, the dog 42 of the coupling block 35 is attached to the idle roller 40a of the lowering limit switch 40. The lifting electric motor 37 is stopped by the contact.

When the raising / lowering electric motor 37 is stopped by the information from the lowering limit switch 40, the connecting pin 36 of the connecting block 35 is connected to the connecting member 24.
Since it is preset so as to be located below and away from the upper surface of the connecting long hole 25, the article supports 16 on the left and right sides are surely secured to the floor surface even if the floor surface F has some irregularities. It stops at the lower position while it is in contact with F. When the electric motor 37 for raising and lowering does not stop due to the information from the limit switch 40 for lowering the limit, the control device is associated with the contact of the lower limit switch 41 for emergency stop of the dog 42 with the idler roller 41a. H activates the alarm device to stop the lifting electric motor 37. At that time, the connecting long hole 25
The length L2 between the limit switches 40 and 41 is shorter than the length L1 of the connecting switch 36, and the connecting pin 36 is set so as not to contact the lower surface of the connecting long hole 25. The emergency stop is performed before the working pin 36 contacts the lower surface of the connecting elongated hole 25.

The relay truck 8 holding and holding the article A together with the pallet P moves to the rack side transfer position X side by the reverse rotation drive of the traveling electric motor 11, and according to the information from the sensor outside the drawing. It stops at a predetermined shelf-side transfer position X. When the relay truck 8 stops, the fork type transfer device 6 of the stacker crane 4 which has been waiting extends to the lower side of the pallet P, and the article A is picked up together with the pallet P as the lift table 5 rises. In addition, the articles A are transferred together with the pallets P onto the lift table 5 by retracting the fork type transfer device 6.
The article A is stored in the article storage unit 1 of the selected article storage shelf 2 by the self-propelled operation of the stacker crane 4, the elevating / lowering of the lift table 5, and the expansion / contraction operation of the fork type transfer device 6.
Then, the pallet P is placed and stored, and the loading operation of the article A is completed.

When carrying out the article A, necessary information about the article A to be carried out is input by the operating device. Then, based on the input information, the control device H selects the article storage rack 2 and the article storage unit 1 in which the articles A to be carried out are stored, and the stacker crane 4 operates in reverse to the above-described loading work. Then, the article A together with the pallet P is unloaded from the selected article storage unit 1 and placed on the article support base 12 of the relay carriage 8 at the shelf-side transfer position X. Then, the relay truck 8
The traveling electric motor 11 is driven, the relay carriage 8 moves to the outside transfer position Y side, and the lifting electric motor 3
7 is also driven, and the article support 16 waiting in contact with the floor surface F starts to rise.

In synchronism with the stop of the relay carriage 8 at the predetermined transfer position Y on the outside side, the article support 16 that rises is moved to the article A.
The pallet P is scooped up, the relay carriage 8 returns to the original transfer position X on the shelf side, and the raised article support 16 is contacted by the dog 42 of the connecting block 35 with the idle roller of the raising limit switch. Stops climbing as you do, then
It descends by the reverse rotation drive of the lifting electric motor 37. As described above, in the lowered article support 16, the dog 42 of the connecting block 35 has the lowering limit switch 40.
As the idle roller 40a comes into contact with the idle roller 40a, it stops in a state in which the floor surface F is reliably contacted. Then, the article support 16
Insert the fork 53a of the hand lifter 53 into the fork insertion hole of the pallet P placed on the top of the hand lifter 53.
The article A is conveyed to a predetermined location along with the pallet P, and the unloading operation of the article A is completed.

[Other Embodiments] (1) In the previous embodiment, an example was shown in which the pair of chains 34 as lifts were provided with the lifting electric motors 37 that constitute the lifting driving means separately. , A pair of chains 34
It is also possible to interlock with one common electric motor 37 for raising and lowering and to drive both chains 34 up and down in synchronization with each other.

(2) In the above embodiment, the chain 34 is used as an example of the cord-shaped body. However, other than the chain 34, a wire or belt-shaped body may be used. it can.

[0034]

[Brief description of drawings]

[Figure 1] Schematic plan view of the entire automated warehouse

FIG. 2 is a perspective view of a main part of an automated warehouse.

FIG. 3 is a front view of a relay lifting device.

FIG. 4 is a side view of a relay lifting device.

FIG. 5 is a front view of a main part of a relay lifting device.

FIG. 6 is a front view of a main part of a relay lifting device.

FIG. 7 is a plan view of the main part of the relay lifting device.

FIG. 8 is an exploded perspective view of a main part of a relay lifting device.

FIG. 9 is a plan view of a main part of a relay lifting device.

FIG. 10 is a front view of a main part of a relay lifting device.

FIG. 11 is a block diagram showing a control device.

[Explanation of symbols]

14 Article lifting device 15 Guide support 16 Article support 17 base frames 28 Upper winding part 33 Lower winding part 34 Cords as lifting body 37 Driving Means Comprising Elevating Driving Means A article F road surface G guide means H Control means that constitutes a lifting drive means

Claims (3)

(57) [Claims] 1. A pair of article supports that are vertically moved up and down over a position on the road surface side and a position above the road surface side, and the article supports provided separately for each of the article supports. The pair of lifting and lowering bodies are synchronously lifted and lowered so that the pair of lifting and lowering bodies that support the supporter and move up and down and the pair of article supporters are lifted and lowered while maintaining the same or substantially the same height. An article lifting device provided with a lifting drive means, wherein each of the pair of article supports is vertically movably guided and supported by a columnar guide means standing on the road surface side, The lifting body is composed of a cord wound vertically.
Are the respective pair of article support is configured in an elongated shape, before
The guide means connects both end sides of each of the pair of article supports.
It is configured to include a pair of guide supporting portions for guiding and supporting,
An elevating body supports a longitudinal central portion of the article support.
And a base frame installed on the road surface.
And the lower winding part that winds the lower side of the lifting body,
An upper winding that is installed on the frame and winds on the upper side of the lifting body.
Part is supported by the guide means, and upper ends of the pair of guide support parts are connected to each other by a connecting member.
And the upper winding portion is held at the center of the connecting member.
Carrying equipment for lifting items. 2. The guide means is provided on both sides of the article support.
A pair of guide supporting portions for guiding and supporting the end side portions are provided in the article.
The support is provided so as to be located inside both ends of the support.
Article lifting apparatus according to 1. 3. The lifting drive means comprises the pair of lifting bodies.
The driving means for vertically moving the
And a drive means for operating in
Means are installed on the base frame to drive the lower winding section
The structure according to claim 1 or 2, which is configured to rotate.
The article lifting device.