JPH0518384Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an elevating device that is extendable and retractable by sending a wire.

(Prior Art) Various lifting devices have been devised for transporting an object from a low place to a high place. Among them, as shown in FIG. By fixing one end of the wire to the lower part of the body, hanging this wire in an S-shape from the intermediate strut, and winding the other end of the wire using the winding mechanism provided on the proximal strut, the basic There is one in which the intermediate strut body and the tip strut body are raised and lowered relative to the end strut body.

Furthermore, as shown in FIG. 10, for example, a wire is hung from the upper end to the lower end of the proximal strut, this wire is fixed to the lower part of the distal strut, and the wire is fed to the proximal strut. On the other hand, there is one in which the tip strut body can be moved up and down.

(Problems to be solved by the invention) However, since the lifting device as shown in FIG. Another problem is that a complicated mechanism is required to wind the wire so that it does not get tangled, and this also increases the manufacturing cost.

In the case of a lifting device as shown in FIG. 10, since it is only possible to raise and lower the distal column with respect to the proximal column, it is necessary to move the proximal column and the distal column in order to transport an object to a high place. There was a problem in that the body had to be made longer and the entire lifting device could not be stored compactly even if the tip support body was lowered.

Therefore, the present applicant has worked hard to find a way to make it possible to raise and lower a large number of support bodies without winding up the wire, and as a result, has completed the lifting device of the present invention. can be,
The object of the present invention is to provide a simplified lifting device that does not require a wire winding mechanism, and to downsize the entire device in which the support column is lowered.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the means taken by the present invention are as follows: A lifting device 100 that is extendable and retractable by sending a wire 24, wherein the wire 24 a tip support body 21a whose both ends are fixed at the top and bottom; and at least one intermediate support body 21b on which the wire 24 is hung in an S-shape.
The gist of this is an elevating device 100 in which a proximal support column 21d having a feeding mechanism 26 for feeding the wire 24 is slidably connected.

(Operation of the invention) The principle of operation of the lifting device 100 according to the invention will be briefly explained below with reference to FIGS. 1 and 2.

In FIG. 1, when the wire 24 is sent downward by a certain length by the feeding mechanism 26 disposed on the proximal support 21d, the intermediate support 21b, on which the wire 24 is hung, receives the sent wire. It attempts to rise by the length of 24. When the intermediate strut body 21b tries to rise, the tip strut body 21a tries to rise. In this way, the intermediate strut body 21b or the tip strut body 21a is
However, which one of the struts starts rising first is determined by the weight of each strut 21a, 21b, the coefficient of friction between the wire 24 and the hanging members 22b, 23b, etc. If it is lighter than the intermediate strut body 21b, the tip strut body 21a starts to rise first, and in the opposite case, the intermediate strut body 21b starts to rise first. As the wire 24 is further sent downward, as shown in FIG.
1a and the intermediate strut 21b continue to rise, and when each of the struts 21a, 21b can no longer be raised, the lifting device 100 is fully extended.

Next, when the wire 24 is sent upward by the feeding mechanism 26, either the tip support 21a or the intermediate support 21b starts to descend depending on its weight, etc., as described above, and the wire 24 is further moved upward. As it is advanced, the tip strut body 21a and the intermediate strut body 21b continue to descend, and at the point when each strut body 21a, 21b can no longer be lowered, the elevating device 100 is in a completely contracted state.

As described above, the lifting device according to the present invention loads the object 1 above the tip support 21a and sends the wire 24 by the feeding mechanism 26, thereby moving the object 1 from a low place to a high place. Or it acts to transport from a high place to a low place.

Note that both ends of the wire are fixed to the tip support, so when the support is raised, the wire sent out from the feeding mechanism is pulled as the tip support rises, and is pulled down the support. At this time, the wire being sent out from the feeding mechanism is stretched as the tip strut body and intermediate strut body descend, and the strut body is raised and lowered smoothly without any excess wire becoming sagged or tangled. .

(Example) Below, a specific example will be described in which the lifting device 100 according to the present invention is applied to a lifting and lowering support device 100 for a plate material.

The plate material lifting and lowering support device 100 according to this embodiment is as follows:
When pasting plasterboard or decorative plywood on the ceiling of a building, it is used to temporarily install the board 1 on the ceiling.

Generally, a board material 1 such as gypsum board or decorative plywood is attached to the ceiling of a building in order to improve the appearance, provide fire resistance, or improve air conditioning efficiency. Conventionally, this pasting work has been carried out by an operator using a stepladder or the like to lift the board material 1 up to the ceiling, positioning it, and then pasting it by driving it with nails or the like.

However, some of these board materials 1 include large materials (3 shaku x 6
There are also items that are quite heavy, such as items (shaku) and items such as plasterboard. Conventionally, these plate materials 1
When attaching the material to the ceiling, two or three workers use a stepladder, etc. to lift and position the board 1 to the ceiling, and another worker attaches it by driving it with nails, etc. was. This places a considerable burden on the worker, and also poses a problem in terms of work efficiency. Furthermore, it is extremely dangerous for a worker to climb a stepladder while carrying such a heavy object, as the stepladder may topple or the worker may miss the step and fall.

Furthermore, depending on the type of building, the thickness of the board material 1 to be used for the ceiling was previously set to be at least 9 mm according to the Fire Service Act, but due to the revision of the law, this value has changed.
Since it was changed to 12mm, its weight inevitably increased, making the above-mentioned problems even more pronounced.

The plate material lifting and lowering support device 100 according to this embodiment is as follows:
This was done in consideration of the above-mentioned actual situation, and it increases work efficiency by reducing the labor of the worker when pasting the board 1 to the ceiling, and also makes the work of pasting the board 1 to the ceiling safe. It is an object of the present invention to provide a device 100 for lifting and lowering a plate material that can be lifted and lowered, and to simplify the structure thereof by using a lifting means that sequentially feeds wires.

As shown in FIG.
It is composed of 0.

The support leg 10 is a leg that supports the entire lifting support device 100, and includes a grip member 11 that vertically grips the support column 20, and a leg member 12 to which the grip member 11 is fixed. The gripping member 11 is attached to the support portion 2
0 is formed in the center of the leg member 12 so as to be fitted thereinto, and on both sides thereof there are threaded screws 1 which press the side surfaces of the struts 20 which are fitted and inserted when operated.
3 are arranged. The leg member 12 is formed into a substantially X-shape in plan, and has a supporting column 20 fitted at each end of the leg member 12 so as to be able to hold it vertically depending on the location where the elevating support device 100 is installed. Floor levelers 14 are respectively provided.

As shown in FIGS. 4 and 5, the strut section 20 includes a plurality of strut tubes 21 having different inner and outer circumferences and a plurality of pulleys 2 pivoted on one side of the strut tubes 21.
2 and 23, a wire 24 that is hung on the pulleys 22 and 23, a spring 25 that applies a certain tension to the wire 24, and a feeding mechanism 26 that sends the wire 24.

There are four types of strut tubes 21: a distal strut tube 21a, a first intermediate strut tube 21b, a second intermediate strut tube 21c, and a proximal strut tube 21d.
are formed in such a length (approximately 800 mm) that all of the strut tubes 21 can be inserted into the proximal end strut tube 21d in sequence.

The tip support tube 21a is formed of a 40 mm square tube, and one end of the spring 25 is fixed to the inner surface on the tip side.

The first intermediate support pipe 21b is formed of a 50 mm square rectangular tube, and the first intermediate external pulley 22b is pivotally attached to the outer surface on the distal end side, and the first intermediate outer pulley 22b is attached to the outer surface on the proximal end side. An intermediate inner pulley 23b is pivoted. Note that, as shown in FIG. It is pivoted so that it is parallel to the other.

The second intermediate support pipe 21c is formed of a 60 mm square rectangular pipe, and like the first intermediate support pipe 21b,
Second intermediate external pulleys 22 on the distal and proximal sides, respectively.
c and a second intermediate inner pulley 23c are pivoted.

The proximal support tube 21d is formed of a 75 mm square rectangular tube, and has a proximal outer pulley in the same inclined state as the first intermediate outer pulley 22b and the second intermediate outer pulley 22c on its outer surface on the distal end side. A fixed pulley 23d, which is perpendicular to the side surface of the proximal support tube 21d, is pivotally supported on the inner surface of the proximal support tube 21d. Further, the feed mechanism 26 is formed near the center of the proximal support tube 21d, and the feed mechanism 26 includes a feed pulley 26a that feeds the wire 24, and a gear that is pivotally supported together with the feed pulley 26a. 26b, a worm gear 26c meshing with the gear 26b, and a worm gear 26c.
It is composed of a handle 26d which is pivotally supported together with the handle 26d. As shown in FIGS. 4 and 5, the wire 24 has one end fixed to the proximal outer surface of the distal support tube 21a, and the other end of the fixed wire 24 to the first intermediate portion. It is hung from the first intermediate outer pulley 22b through the notch 27b of the strut tube 21b, and is inserted from the inside of the first intermediate strut tube 21b to the outside of the first intermediate strut tube 21b. The wire 24 inserted through the outside of the first intermediate strut pipe 21b is hung on the first intermediate inner pulley 23b, and then further connected to the second intermediate outer pulley 22c via the notch 27c of the second intermediate strut pipe 21c. The second intermediate support pipe 21 is hung
It is inserted from the inner surface of c to the outer side of the second intermediate strut pipe 21c. Similarly, the wire 24 is hung around the second intermediate inner pulley 23c and the proximal outer pulley 22d, and is inserted through the outer side of the proximal support tube 21d. The wire 24 inserted into the outside of the proximal support tube 21d is
After being wound about three times around the feed pulley 26a, the fixed pulley 2
3d, and is inserted into the inside of each support tube 21 and fixed to the other end of the spring 25.

The loading section 30 has a plane approximately the same shape as the support leg section 10
It is formed in a letter shape, and a protrusion 31 facing downward is provided at the center thereof to fit into the distal end of the distal end support tube 21a.

The plate elevating and lowering support device 100 according to this embodiment configured as described above operates as follows.

That is, after the worker installs the support leg section 10 below the ceiling to which the board material 1 is to be attached, the worker fits the support section 20 into the gripping member 11 of the support leg section 10 and tightens the screw 1.
3 and grip the support column 20 perpendicularly to the support leg 10. The vertically gripped support 20
The protrusion 31 of the loading section 30 is fitted onto the tip of the stacking section 30, and the plate material 1 to be attached to the ceiling is loaded onto the loading section 30. Thereafter, when the handle 26d of the feed mechanism 26 is turned clockwise, the plate 1 starts to gradually rise.

The principle of this rise will be explained below with reference to FIGS. 7 and 8.

In these figures, when the feed pulley 26a is turned clockwise (from this side of the paper to the other side),
The wire 24 is sent downward by a length corresponding to the rotation. At this time, since the proximal outer pulley 22d is pivoted to the proximal support tube 21d, the second intermediate support tube 21c tends to rise by the length of the sent wire 24. However, the second intermediate strut pipe 2
1c tries to rise, the second intermediate strut pipe 21
Since the weight of the first intermediate strut pipe 21b is lighter than the weight of Since the tip support tube 21a is lighter in weight, the tip support tube 21a
tries to rise. Here, the tip support tube 21a
can be raised by the length of the wire 24 sent by the feed pulley 26a, so as a result, the feed pulley 2
The tip support tube 21a will rise by the length of the wire 24 sent at step 6a. Similarly, when the wire 24 is fed by the length of the tip strut tube 21a, the first intermediate strut tube 21b starts to rise, and when the wire 24 is fed by the length of the first intermediate strut tube 21b, the first intermediate strut tube 21b starts to rise. The second intermediate strut pipe 21c begins to rise. In this way, when the wire 24 is sent in sequence, the tip strut tube 21a, the first intermediate strut tube 21
b, the second intermediate strut pipe 21c, and so on.
1 rises, and at the point when the wire 24 can no longer be fed, the support column 20 is in a fully extended state as shown in FIG.

Next, when the feed pulley 26a is rotated counterclockwise (from the other side of the page to this side), the wire 24 is sent upward, and the second intermediate support pipe 21c starts to descend due to its own weight. When the wire 24 longer than the length of the second intermediate strut pipe 21c is sent, the first intermediate strut pipe 21b starts to descend due to its own weight. In this way, the wire 24
, the second intermediate strut tube 21c, the first intermediate strut tube 21b, and the distal strut tube 21a are sequentially lowered and inserted into the proximal strut tube 21d. All the strut pipes 21 will be accommodated.

Therefore, as shown in FIGS. 4 and 5, when the operator turns the handle 26d of the feed mechanism 26 clockwise, the plate 1 gradually rises.
If the operation of the handle 26d is stopped when the plate 1 comes into contact with the ceiling, the plate 1 will be temporarily installed at a predetermined position. Thereafter, the worker uses a stepladder or the like to drive nails or the like to attach the board 1 to the ceiling. After pasting, when the handle 26d is turned counterclockwise, the loading section 30 starts to descend and all the strut pipes 2 are
1 is stored in the proximal support tube 21d.

With the above operations, the work of attaching the board 1 to the ceiling is completed.

As described above, the plate material lifting and lowering support device 100 according to the present embodiment is configured such that the plate material 1 placed on the loading section 30 can be raised and lowered by sending the wire 24, and the plate material 1 can be temporarily installed on the ceiling. Therefore, when attaching a heavy board 1 to the ceiling, if you use this device 100 to temporarily mount the board 1 on the ceiling, it can be done by two or three workers like in the past. The board 1 can be easily attached to the ceiling by one worker without the need for other workers to lift and position the board 1 by holding it up and attaching it by driving nails or the like. This allows for efficient work.

Furthermore, if this device 100 is used, there is no need for two or three workers to carry the board 1 and climb a stepladder, etc., as in the past, so the work of attaching the board 1 to the ceiling is extremely safe. can be done.

Furthermore, in this embodiment, the support leg 10,
Since the support section 20 and the loading section 30 are each formed to be detachable, they are small and lightweight, and are very convenient to carry.Furthermore, if the supporting leg section 10 and the loading section 30 are formed to be foldable, It is also more convenient to carry. Furthermore, if the supporting legs 10 are provided with swivel casters with stoppers, it becomes possible to easily cope with movement of the work place.

Furthermore, since the overall height of the plate material lifting and supporting device 100 according to this embodiment is only about 900 mm when stored, the task of loading the plate material 1 onto the loading section 30 becomes extremely easy.

In this embodiment, the support column 20 is formed to be expandable and retractable by inserting four types of square tubes, but it may also be formed to be expandable and retractable using four or more or fewer types of square tubes. In these cases, it becomes possible to temporarily install the board 1 on a ceiling located at a higher place, or it is possible to make the board more compact when stored. Further, each support tube 21 is formed of a square tube, but it does not need to be formed of a cylindrical tube or a tubular shape.

Further, in this embodiment, the feeding means for the wire 24 is configured such that by turning the handle 26d, the feeding pulley 26a is rotated via the gear 26b and the worm gear 26c, and the wire 24 is fed. A handle 26d is pivotally supported together with a feed pulley 26a, and by rotating the handle 26d, the feed pulley 26a is directly rotated to feed the wire 24, or a motor is used to rotate the feed pulley 26a to feed the wire 24. It may be configured to be sent. With such a configuration, the lifting speed of the loading section 30 becomes faster, but it goes without saying that it is necessary to provide some kind of latch function to prevent reverse rotation of the feed pulley 26a.

The above describes a specific example in which the lifting device according to the present invention is applied to the plate lifting support device 100, but the lifting device according to the present invention can be applied to any lifting device that transports other objects from a low place to a high place. It can also be applied to elevating means such as a telescopic ladder or a retractable ladder.

(Effect of the invention) As described above, since the lifting device according to the present invention is configured to move up and down by sending a wire, compared to the conventional lifting device that moves up and down by winding a wire, it is easier to move the wire up and down. This has the effect that the feeding mechanism can be made small and simple, and the manufacturing cost thereof can be reduced accordingly.

Furthermore, since the lifting device according to the present invention can include a plurality of intermediate struts, the tip strut,
Not only can the base end strut body and each intermediate strut body be shortened, the entire lifting device that lowers each strut body can be made extremely compact, but also the wires can be moved smoothly without getting entangled when going up and down. It also has the effect of being able to be sent.

[Brief explanation of the drawing]

1 and 2 are front views illustrating the working principle of the lifting device according to the present invention, and FIG. 3 is a perspective view showing an embodiment in which the present invention is applied to a lifting support device for plate materials.
Fig. 4 is a front view of the embodiment, Fig. 5 is a right side view of the embodiment, Fig. 6 is a longitudinal cross-sectional view of the vicinity of the second intermediate outer pulley in the embodiment, and Figs. 7 and 8 are of the embodiment. A front view for explaining the principle of operation, and FIGS. 9 and 10 are front views showing an example of a conventional lifting device. Explanation of symbols, 100... Lifting device, 10... Support leg section, 20... Support section, 21a... Tip support body, 21b... Intermediate support body, 21d... Base end support body, 24... Wire, 26... Feeding mechanism, 30
...Loading section.

Claims (1)

[Claims for Utility Model Registration] An elevating device that can be expanded and contracted by sending a wire, the wire being hung in an S-shape from a tip support body to which both ends of the wire are fixed at the top and bottom. An elevating device comprising at least one intermediate strut and a proximal strut having a feeding mechanism for feeding the wire, which are slidably connected to each other.