JP2020189739A - Support tool and deck plate support tool - Google Patents

Abstract

To provide a support tool capable of steplessly repositioning a support arm portion provided on the peripheral side surface of a telescopic device.SOLUTION: A support tool 1 comprises: a telescopic device 2 consisting of a screw jack structure, which includes a multi-cylindrical body 3, and a power transmission shaft 5 which is located on the central axis of the multi-cylindrical body 3 and stretches and retracts individual cylinders 3a-3c that make up the multi-cylindrical body 3 while preventing them from rotating; and a support arm 13 that is slidably provided on the outer surface of the cylinder 3c and directly or indirectly supports an object to be supported. The cylinder 3c has a non-contained area B that is not contained in a hollow portion of the outermost cylinder 3a. The non-contained area B includes a screw portion 22 formed on the peripheral side surface thereof, a position adjusting portion 17 screwed on the screw portion 22, and an annular portion 16 that is provided around the outer surface of the non-contained area B and directly or indirectly supports the support arm 13 by restricting the slide in the non-contained area B by the position adjusting portion 17.SELECTED DRAWING: Figure 2

Description

The present invention relates to a versatile support, and particularly supports a deck plate that can be reused when carrying out a slab construction method for forming a concrete slab on a floor, a ceiling, or the like in a building using H-shaped steel as a structural material. Regarding deck plate supports for.

When constructing a building using reinforced concrete or steel-framed reinforced concrete as a structural material, a deck plate made of steel plate may be used as a formwork when forming a concrete slab. Conventionally, the deck plate has been fixed to the upper surface of the beam by welding or bolting. However, in such a method, the deck plate is buried in the slab as the concrete solidifies. Therefore, there is a problem that the deck plate cannot be collected.
In view of such circumstances, the applicant of the present invention has filed several inventions in the past regarding a reusable deck plate and a support tool for detachably supporting the deck plate on the H-shaped steel. There is. Here, the prior art (Patent Document 1) that seems to be most relevant to the present invention will be described.
Further, as another prior art in the technical field related to the present invention, for example, a technique disclosed in Patent Document 2 is known.

Patent Document 1 discloses an invention relating to a deck plate support that enables reuse of a deck plate and a slab construction method using the deck plate support under the name of "deck plate support and slab construction method using the same". There is.
The deck plate support, which is the invention disclosed in Patent Document 1, will be described by using the reference numerals described in the same document as they are. A male screw portion 3a is provided on the outer peripheral surface, and an upper receiving metal fitting 2 is attached to the upper end. A cylindrical leg 5 to which a lower support bracket 4 is attached to the lower end of the support column 3 and rotatably holds the support column 3 inserted from above, and a tubular shape that is rotatably externally attached to the support column 3. Upper nut 9 and lower part screwed into the male screw portion 3a of the support column 3 between the support metal fitting 6 and the square lumber receiving metal fitting 7 and the reinforcing metal fitting 8 installed on the support metal fitting 6 and the support metal fitting 6 and the leg portion 5. It is characterized by including a nut 10.
According to the invention disclosed in Patent Document 1 having the above configuration, by rotating the lower nut 10 in the circumferential direction of the support column 3, the deck plate support is supported by the support column due to the screwing relationship between the support column 3 and the leg portion 5. It can be expanded and contracted as desired in the axial direction of No. 3 (see FIG. 1 in Patent Document 1).
Further, according to the deck plate support disclosed in Patent Document 1, the vertical height of the square timber receiving metal fitting 7a is desired by rotating the upper nut 9 screwed to the support column 3 in the circumferential direction of the support column 3. (See FIG. 1 in Patent Document 1).
Therefore, according to the deck plate support disclosed in Patent Document 1, since the axial length of the support column 3 can be changed as desired, a plurality of types of H having different distances between the upper flange 13a and the lower flange 13b The deck plate support disclosed in Patent Document 1 can be attached to the shaped steel 13.
Further, according to the deck plate support tool disclosed in Patent Document 1, since the vertical height of the square timber receiving metal fitting 7a can be changed as desired, the deck can be safely supported while indirectly supporting the deck plate by the square timber receiving metal fitting 7a. The plate can be moved up and down in the vertical direction (see FIG. 5 in Patent Document 1).
Therefore, according to the deck plate support disclosed in Patent Document 1, there is an advantage that the deck plate can be supported and the deck plate can be easily attached to and detached from the deck plate support.

Further, Patent Document 2 discloses a device relating to a jack that raises and lowers an object by locking it to a claw portion under the name of "jack".
The jack, which is a device disclosed in Patent Document 2, is a jack provided with a claw portion for hooking an object, and has an inner cylinder fixed to a grounding board and internally screwed and held a drive shaft. A mounting portion that holds the outer cylinder that is moved up and down by the drive shaft and the claws along the outer peripheral surface of the inner cylinder, and is slidable and can be fixed to the outer cylinder at an arbitrary height level. It is characterized by having and.
According to the invention disclosed in Patent Document 2 having the above configuration, the jack itself can be expanded and contracted by using a ladder handle, a motor, or the like. Therefore, the expansion and contraction operation of the jack is extremely simple.
Further, according to the invention disclosed in Patent Document 2 having the above configuration, since the mounting position of the claw portion with respect to the outer cylinder can be changed, there is an advantage that a highly convenient jack can be provided.

Japanese Patent No. 6302498 Jitsuzensho 63-71194

When a reusable deck plate as shown in Patent Document 1 is used, it is disclosed in Patent Document 1 throughout the H-shaped steel when forming a concrete floor surface in a building using H-shaped steel as a structural material. It is necessary to install the deck plate support to be used (see FIG. 4 (b) in Patent Document 1). Further, in the case of the technique disclosed in Patent Document 1, a large number of flat ends of the deck plate are arranged side by side on the square timber supported by the square timber receiving metal fitting of the deck plate support (FIG. 6 in Patent Document 1). (A)-(c)).
As described above, when the deck plate support disclosed in Patent Document 1 is used, it is necessary to expand and contract the deck plate support in the direction of the central axis of the column when the deck plate support is attached to the H-shaped steel. (See FIG. 4 in Patent Document 1). For this reason, it is necessary to continuously rotate the lower nut in the circumferential direction of the column in all the deck plate supports to be used, and this work is extremely complicated (see FIG. 5 in Patent Document 1).

Further, in the case of the device disclosed in Patent Document 2, the expansion and contraction operation of the jack itself is extremely simple.
On the other hand, in the invention disclosed in Patent Document 2, it is necessary to temporarily remove the thumbscrew from the outer cylinder when changing the position of the claw portion. In this case, unless the support object is supported by another support member with the claw portion, the support object loses the support and falls. Therefore, when the device disclosed in Patent Document 2 is used as the deck plate support, there is a problem that another support tool for supporting the deck plate is required in addition to the device disclosed in Patent Document 2. there were.

The present invention has been made in response to such conventional circumstances, and provides a support tool capable of steplessly changing the position of a support arm portion projected on a peripheral side surface of a telescopic device. It is in.
Furthermore, another object of the present invention is to provide a support capable of easily performing the expansion / contraction operation of the expansion / contraction device.
In addition, another object of the present invention is to safely and easily adjust the position of the supporting arm when the square pipe constituting the deck plate and the steel beam supporting the square pipe are laminated and arranged. The purpose is to provide a deck plate support that can be used.

In order to achieve the above object, the support according to the first invention includes a multiple cylinder in which a plurality of cylinders are arranged in a nested manner, and individual cylinders arranged on the central axis of the multiple cylinders. A telescopic device having a screw jack structure provided with a power transmission shaft that expands and contracts the multiple cylinders while preventing rotation, and slidably provided on the outer surface of at least one cylinder constituting the telescopic device. , A support arm that directly or indirectly supports the object to be supported, and the cylinder provided with the support arm is housed in the hollow portion of the outermost cylinder that constitutes the multiple cylinder. It is provided with a non-containing area that is not accommodated, and this non-accommodating area is provided on the outer surface of the non-accommodating area, a screw portion formed on the peripheral side surface thereof, a position adjusting portion screwed into the screw portion, and The position adjusting portion regulates the slide in the non-accommodating area, and the position adjusting portion is provided with an annular portion that directly or indirectly supports the supporting arm portion.
In the first invention of the above configuration, the telescopic device has a screw jack structure, so that the power transmission shaft can be rotated by operating, for example, a handle provided separately from the telescopic device. It has the effect of arbitrarily expanding and contracting the multiple cylinders in the direction of the central axis while preventing the rotation of the individual cylinders constituting the cylinders. Further, the supporting arm portion provided on any of the tubular bodies constituting the multiple tubular body has an action of supporting the object to be supported. Further, the non-accommodating area provided in any of the tubular bodies constituting the multiple tubular body has an effect of making the position of the supporting arm portion steplessly adjustable on the peripheral side surface of the arbitrary tubular body. More specifically, the threaded portion formed on the peripheral side surface of the non-accommodating region has an effect of enabling screwing of the nut-shaped position adjusting portion. Then, by screwing the position adjusting portion on the screw portion, there is an action of making the position adjusting portion on the screw portion movable steplessly. Further, the annular tool has an action of sliding on the non-accommodating area in conjunction with the movement of the position adjusting portion. At this time, since the annular tool is always supported by the position adjusting portion, the supporting arm portion does not lose its support even if the position of the position adjusting portion on the screw portion changes.
That is, according to the first invention, while the position adjusting portion directly or indirectly supports the annular tool provided with the supporting arm portion, the annular tool is formed in the direction of the central axis of the multiple cylinder and the screw portion is formed. It has the effect of sliding within the range.

The support according to the second invention is characterized in that, in the first invention described above, the telescopic device includes a worm wheel provided on the power transmission shaft and a worm gear that meshes with the worm wheel. It is a thing.
The second invention having the above configuration has the same operation as the first invention described above. In addition, since the telescopic device according to the second invention includes a worm wheel and a worm gear, the worm wheel can be indirectly rotated by rotating the worm gear. Then, it has an action of rotating the power transmission shaft by the rotation of the worm wheel. That is, according to the second invention, it has an action of rotating the power transmission shaft by utilizing a rotational force in a direction different from the rotation direction of the power transmission shaft.

The support according to the third invention is characterized in that, in the first or second invention described above, the telescopic device is provided with stoppers at both ends in the central axial direction.
The third invention having the above configuration has the same operation as the first invention or the second invention described above. In addition, in the third invention, the stopper has an effect of preventing the positional deviation of both ends of the telescopic device in the central axial direction when the telescopic device is bridged and fixed in an arbitrary gap.

In the third invention described above, the deck plate support according to the fourth invention has the supporting arm portion at least on the innermost cylinder of the group of cylinders constituting the multiple cylinders. If the stopper provided at the end of the slide that slides in the central axis direction of the telescopic device is used as the first stopper, the first stopper is a bent plate formed by bending a flat plate material. If the stopper attached to the fixed end that does not slide in the telescopic device is used as the second stopper, this second stopper holds the flat plate material by bending it into a U-shaped or U-shaped cross section. It is characterized by being a board.
The fourth invention having the above configuration specifies as an invention a specific embodiment in which the above-mentioned third invention is used as a deck plate support. Such a fourth invention has the same operation as the above-mentioned third invention. In addition, since the first stopper in the fourth invention is made of a bent plate formed by bending a flat plate material, when an expansion / contraction device is arranged in a concave gap in the H-section steel and extended, the H-section steel is extended. It has the function of hooking the first stopper on the upper flange to fix the slide end of the telescopic device.
Further, the second stopper in the fourth invention has an action of sandwiching the thick portion of the lower flange of the H-shaped steel when the expansion / contraction device is fixed in the concave gap of the H-shaped steel in a state of being bridged. .. The fourth invention includes a holding plate (second stopper) at the fixed end of the telescopic device, which has an effect of allowing the telescopic device to stand on its own in the concave gap in the H-shaped steel.

The deck plate support according to the fifth invention is the first support arm that directly or indirectly supports the end portion of the square pipe constituting the deck plate in the fourth invention described above. A portion and a second supporting arm that is arranged directly below the first supporting arm and directly or indirectly supports the end of the steel beam that is arranged below the square pipe. It is characterized by having.
The fifth invention having the above configuration has the same operation as the fourth invention described above. In addition, in the fifth invention, the square pipes constituting the deck plate and the steel beams arranged on the vertically lower side thereof are arranged so as to be crossed or arranged in parallel with each other and laminated. In this case, the first supporting arm has an action of directly or indirectly supporting the end of the square pipe arranged on the upper layer side (for example, via a square timber or the like). At the same time, the second supporting arm has the function of directly or indirectly supporting the end of the steel beam arranged on the lower layer side.

The deck plate support according to the sixth invention, in the fourth or fifth invention described above, both the first and second stoppers have a through hole penetrating the flat plate material and a screw that freely appears and disappears in the through hole. It is characterized by having a bolt to be installed.
The sixth invention having the above configuration has the same operation as the fourth or fifth invention described above. In addition, in the fifth invention, the bolts that are freely provided on the first and second stoppers press the upper and lower flanges of the H-shaped steel with the tips of the bolts to firmly attach the expansion and contraction device to the H-shaped steel. It has the function of fixing.

According to the first invention as described above, the support arm portion can be steplessly adjusted in the central axis direction of the telescopic device on the peripheral side surface of an arbitrary cylinder in the telescopic device having a screw jack structure. Can be installed.
Further, according to the first invention, when the supporting arm portion is slid on the peripheral side surface of the cylinder constituting the telescopic device, the load acting on the supporting arm portion can always be supported by the position adjusting portion. it can.
Therefore, according to the first invention, the support arm portion can be moved in the direction of the central axis of the cylinder by expanding and contracting the expansion / contraction device. Further, according to the first invention, the position of the support arm portion in the central axis direction of any cylinder provided with the support arm portion can be adjusted steplessly.
In addition, in the first invention, even while the position of the supporting arm portion is adjusted steplessly, the load acting on the supporting arm portion can be continuously supported by the position adjusting portion. Therefore, when the position of the supporting arm portion is adjusted steplessly, the supporting object supported by the supporting arm portion does not lose its support and fall.
That is, according to the first invention as described above, it is not necessary to support the support object with another support tool when adjusting the position of the support arm portion.
Therefore, according to the first invention, it is possible to provide a support tool that is safe and easy to use when temporarily fixing a building material or the like.

According to the second invention, it has the same effect as that of the first invention described above. Further, since the second invention includes a worm wheel and a worm gear, a rotational force in a direction different from the rotational direction of the power transmission shaft, that is, a separate handle, a separate electric rotating device, or the like is used. The telescopic device can be easily expanded and contracted.
Therefore, according to the second invention, it is possible to provide a support having excellent operability as compared with the first invention described above.

According to the third invention, it has the same effect as the effect of the first or second invention described above. Further, since the third invention is provided with stoppers at both ends in the central axial direction of the telescopic device, the stability of the stretchable device installed when the telescopic device is fixed so as to be bridged over some gap. Can be enhanced.
Therefore, according to the third invention, it is possible to prevent the expansion / contraction device from being unintentionally detached from the gap during its use. Therefore, according to the third invention, it is possible to provide a support having excellent stability as compared with the first or second invention described above.

The fourth invention has the same effect as that of the third invention described above. Further, since the expansion / contraction device of the fourth invention is provided with a holding plate (second stopper) formed by bending a flat plate material, the expansion / contraction device is bridged in a concave gap formed in the H-shaped steel. When fixing with, the expansion / contraction device before extension can be made independent in the gap. Further, the fourth invention includes a bending plate (first stopper) in addition to the holding plate (second stopper), so that when the slide end of the telescopic device reaches the gap. In addition, the folding plate can be fitted to the three-dimensional shape of the upper flange of the H-shaped steel to complete the fixing work of the telescopic device.
Therefore, according to the fourth invention, it is possible to provide a deck plate support that allows the expansion / contraction device to be easily attached to and detached from the concave gap formed in the H-shaped steel.

The fifth invention has the same effect as that of the fourth invention described above. Further, the supporting arm portion in the fifth invention includes two types, a first supporting arm portion and a second supporting arm portion, so that only one type of supporting arm portion is provided. The installation work of the deck plate can be simplified as compared with the case where the installation position is changed and used.
Therefore, according to the fifth invention, the installation work of the deck plate can be efficiently performed when the floor surface is formed by using the reusable deck plate.
Further, according to the fifth invention, since the support arm portion includes two types, a first support arm portion and a second support arm portion, a square pipe is provided by one deck plate support. Both the end of the steel beam and the end of the steel beam can be supported at the same time.
In this case, the square pipes can always be supported by the steel beams regardless of the arrangement direction of the square pipes constituting the deck plate. Further, in this case, there is also an effect that the end portion of the steel beam that supports the square pipe can be supported by the deck plate support tool attached to the H-shaped steel.
Therefore, according to the fifth invention, it is possible to provide a deck plate support that can safely support the deck plate and the steel beam that supports the deck plate.

The sixth invention has the same effect as that of the fourth or fifth invention described above. Further, in the sixth invention, the expansion / contraction device can be fixed to the concave gap in the H-shaped steel by the pressing force when the expansion / contraction device is extended, and further, the bolts provided in the first and second stoppers further increase the thickness. The expansion and contraction device can be firmly fixed to the H-shaped steel.
Therefore, according to the sixth invention, it is possible to more reliably prevent the expansion / contraction device from being unintentionally detached from the H-shaped steel.
In this case, it is possible to prevent the deck plate support from coming off the H-shaped steel and dropping the deck plate while the deck plate is being supported by the sixth invention.
Therefore, according to the sixth invention, it is possible to provide a deck plate support having higher safety and operability as compared with the case where the first and second stoppers are not provided with fixing bolts. ..

It is a perspective view of the deck plate support which concerns on embodiment of this invention. (A) is a vertical cross-sectional image of the deck plate support according to the embodiment of the present invention, (b) is a vertical cross-sectional image showing a state in which the deck plate support is being extended, and (b) is a vertical cross-sectional image of the deck plate. It is a vertical cross-sectional image view which shows the state in which the support is extended. It is a perspective view which shows the state which the deck plate support which concerns on embodiment of this invention is installed in H-shaped steel. It is a perspective view which shows the state which the deck plate support which concerns on embodiment of this invention is installed in H-shaped steel. It is a perspective view which shows the fixed end side of the telescopic device in the deck plate support which concerns on embodiment of this invention by disassembly. It is a top view which shows the connection between the worm wheel and the worm gear in the deck plate support which concerns on embodiment of this invention. It is a perspective view which shows the 2nd cylinder and the 3rd cylinder of the deck plate support which concerns on embodiment of this invention by disassembling. (A) is a perspective view of a third cylinder according to an embodiment of the present invention, and (b) is a side view showing the inside of the third cylinder so as to be transparent. It is a perspective view which shows the relation at the time of operation of the 2nd cylinder body and 3rd cylinder body which concerns on embodiment of this invention. (A) A perspective view of a support arm portion and a configuration attached thereto in the deck plate support according to the embodiment of the present invention, and (b) a perspective view showing the support arm portion and the configuration attached thereto in an exploded manner. Is. It is an image figure of the cross section which shows the state of supporting the square pipe which constitutes a deck plate, and the steel beam arranged under it by the deck plate support tool which concerns on embodiment of this invention. It is a perspective view which shows the mode which supports the square pipe which constitutes the deck plate, and the steel beam arranged under the square pipe by the deck plate support which concerns on embodiment of this invention. It is sectional drawing image figure of the support which concerns on the modification of embodiment of this invention.

The support and the deck plate support according to the embodiment of the present invention will be described in detail with reference to FIGS. 1 to 13.

First, an outline of the deck plate support 1 according to the embodiment of the present invention will be described with reference to FIGS. 1 and 2.
FIG. 1 is a perspective view of a deck plate support according to an embodiment of the present invention. 2 (a) is a vertical cross-sectional image of the deck plate support according to the embodiment of the present invention, and (b) is a vertical cross-sectional image showing a state in which the deck plate support is being extended. b) is a vertical cross-sectional image diagram showing a state in which the deck plate support is extended.
As shown in FIGS. 1 and 2A, the deck plate support 1 according to the present embodiment mainly consists of a telescopic device 2 having a screw jack structure and a multi-cylinder body 3 (third) constituting the telescopic device 2. It is slidably provided on the outer surface of at least one of (1) cylinders 3a to 1) (third cylinders 3c in this embodiment) and is a support object, for example. It is provided with a support arm portion 13 that directly or indirectly supports a deck plate or the like.
Further, in the expansion / contraction device 2 described above, as shown in FIG. 2A, a plurality of cylinders (first cylinder 3a to third cylinder 3c) are arranged in a nested manner in the multiple cylinder 3. It will be. Further, the telescopic device 2 is provided with a power transmission shaft 5 on the central axis of such a multiple cylinder 3. The relationship between the multiple cylinder 3 and the power transmission shaft 5 and the mechanism of their operation will be described later.

Further, in the deck plate support 1 according to the present embodiment, for example, the third cylinder 3c provided with the support arm 13 is a cylinder which is a non-accommodation area B that is not accommodated in the hollow portion of the multiple cylinder 3. It includes a body 3c ₃ and a cylinder 3c ₄ (see FIG. 2A).
Further, the tubular body 3c ₃ provided with the non-accommodating area B is provided with a screw portion 22 on the outer surface thereof, and a ring-shaped position adjusting portion 17 is screwed into the screw portion 22.
In addition, the non-accommodating area B (see FIG. 2A) slides vertically above the position adjusting portion 17 and on the peripheral side surface of the non-accommodating area B without depending on the fitting of screws. An annular portion 16 is provided. Then, the support arm portion 13 is directly fixed to the annular portion 16 or indirectly via the support arm portion holding portion 15 as shown in FIGS. 1 and 2, for example.

Therefore, in the deck plate support 1 according to the present embodiment, by rotating the position adjusting portion 17 in the circumferential direction thereof, the position adjusting portion 17 is not provided on the screw portion 22 in the central axis direction of the third tubular body 3c. It moves up and down in stages. Further, the annular portion 16 to which the supporting arm portion holding portion 15 is connected is placed on the vertically upper end portion of the position adjusting portion 17 while being in contact with each other without being integrally connected. Therefore, when the position adjusting portion 17 moves steplessly in the central axis direction of the tubular body 3c ₃ , the annular portion 16 and the supporting arm holding portion 15 also steplessly slide in the central axial direction of the tubular body 3c _3. To do.
Therefore, in the deck plate support 1 according to the present embodiment, the support arm portion 13 is mounted on the peripheral side surface of an arbitrary cylinder (here, the third cylinder 3c) constituting the multiple cylinder 3. It can be slid steplessly in the direction of the central axis of the body 3.

Further, since the telescopic device 2 of the deck plate support 1 according to the present embodiment as described above has a screw jack structure as shown in FIGS. 2 (b) and 2 (c), the power transmission shaft 5 is provided. The multiple cylinder 3 can be expanded and contracted in the direction of the central axis by rotating the central axis in the forward and reverse directions.
More specifically, FIG. 2A shows a state in which the telescopic device 2 according to the present embodiment is contracted and shortened to the shortest, and the telescopic device 2 according to the present embodiment is most expanded. The state is shown in FIG. 2 (c).
Therefore, according to the deck plate support 1 according to the present embodiment, by adopting the screw jack structure as the expansion / contraction mechanism of the expansion / contraction device 2, the difference between the shortest time and the longest time in the expansion / contraction device 2 can be increased.

Conventionally, in a screw jack structure including a multiple cylinder and a power transmission shaft, the individual cylinders constituting the multiple cylinder are housed in a nested manner, and the power transmission shaft is always housed in the hollow portion of the multiple cylinder. It is stored. Therefore, when the screw jack structure as described above is adopted as the telescopic device, the square timber receiving metal fitting (corresponding to the supporting arm 13 in the present invention) is attached to the power transmission shaft as in the invention disclosed in Patent Document 1. Could not be installed steplessly and slidably. Therefore, as a matter of course, referring to Patent Documents 1 and 2, the supporting arm portion 13 is installed steplessly and movably in the direction of the central axis of the multiple cylinder in the telescopic device provided with the screw jack structure. I couldn't.
On the other hand, according to the deck plate support 1 according to the present embodiment, any cylinder (first cylinder 3a to third 3c) of the multiple cylinders 3 constituting the telescopic device 2 is the most. A non-accommodating region B that is not accommodated in the hollow portion of the outer cylinder first body 3a is provided, and a position adjusting portion 17 is screwed onto the outer surface of the non-accommodating region B, so that the position adjusting portion 17 is steplessly formed. By moving with, the annular portion 16 supporting the supporting arm portion 13 can also be moved steplessly.
Therefore, according to the deck plate support 1 according to the present embodiment, the support arm portion 13 is placed on the peripheral side surface of the multiple cylinder 3 in the telescopic device 2 having the screw jack structure in the direction of the central axis of the multiple cylinder 3. It is possible to provide a new support that can be moved steplessly.

3 and 4 are perspective views showing a state in which the deck plate support according to the embodiment of the present invention is installed on the H-shaped steel. The same parts as those shown in FIGS. 1 and 2 are designated by the same reference numerals, and the description of their configurations will be omitted.
The deck plate support 1 according to the present embodiment has a screw jack structure in which the expansion / contraction device 2 includes the multiple cylinders 3, so that the upper flange 19a to the lower flange 19b are as shown in FIGS. The expansion / contraction device 2 can be fixed in a state of being bridged to the concave gap 19c in the H-shaped steel 19 having various heights. That is, according to the deck plate support 1 according to the present embodiment, it is possible to provide a deck plate support having high versatility with respect to the width of the gap 19c of the H-shaped steel 19 to be attached.

Further, in the deck plate support 1 according to the present embodiment, since the telescopic device 2 has a screw jack structure, the telescopic device 2 can be expanded and contracted as in the invention shown in Patent Document 1 above. There is no need to manually continue to rotate the nut-shaped annular tool screwed onto the screw rod-shaped support. That is, in the deck plate support 1 according to the present embodiment, the power transmission shaft 5 is easily connected to the power transmission shaft 5 directly or indirectly by connecting a handle or an electric rotating device to the power transmission shaft 5 as a base axis. Can be rotated.
Therefore, according to the deck plate support 1 according to the present embodiment, it is possible to provide a deck plate support that can be easily attached to and detached from the H-shaped steel 19 to be attached.

Further, according to the deck plate support 1 according to the present embodiment, even when the mounting position of the support arm 13 in the telescopic device 2 is changed steplessly, the load acting on the support arm 13 is adjusted. 17 can be supported without interruption.
Therefore, according to the deck plate support 1 according to the present embodiment, it is safe to adjust the vertical position of the deck plate supported by the supporting arm 13 and to attach / detach the deck plate to / from the supporting arm 13. It can be done easily.

As shown in FIGS. 1 to 4, the deck plate support 1 according to the present embodiment has a first stopper 8a at the slide end 2a of the telescopic device 2 and a first stopper 8a at the fixed end 2b. 2 stoppers 8b may be provided respectively (arbitrary selection component).
In this case, for example, the deck plate support 1 according to the present embodiment is hung in the concave gap 19c formed between the upper flange 19a and the lower flange 19b of the H-shaped steel 19, as shown in FIGS. When the telescopic device 2 is arranged and fixed so as to be passed, the stability of both ends at the time of fixing the telescopic device 2 can be improved.

Subsequently, the detailed structure of the deck plate support 1 according to the present embodiment and the action and effect thereof will be described with reference to FIGS. 5 to 12.
First, the power transmission shaft 5 and its peripheral structure in the deck plate support 1 according to the present embodiment will be described with reference to FIGS. 5 and 6.
FIG. 5 is a perspective view showing an exploded view of the base side end of the telescopic device in the deck plate support according to the embodiment of the present invention. Further, FIG. 6 is a plan view showing the connection between the worm wheel and the worm gear in the deck plate support according to the embodiment of the present invention. The same parts as those shown in FIGS. 1 to 4 are designated by the same reference numerals, and the description of their configurations will be omitted.
As shown in FIG. 5, the telescopic device 2 of the deck plate support 1 according to the present embodiment is provided with a worm wheel 5a integrally provided at the lower end of the power transmission shaft 5 and while being fitted to the worm wheel 5a. It is equipped with a worm gear 7.

Further, the second stopper 8b includes a casing 6a for accommodating the worm wheel 5a and a casing 6b ₁ for accommodating the worm gear 7 on the upper surface thereof, and the hollow portion of the casing 6a and the casing 6b ₁ The hollow part communicates. Therefore, when the worm wheel 5a and the worm gear 7 are housed in the casing 6a and the casing 6b ₁ , respectively, the worm wheel 5a and the worm gear 7 are in mesh with each other at the communicating portion of the hollow portion (see FIG. 6).
Then, when the worm gear 7 is rotated around its central axis, the worm wheel 5a rotates around the central axis, whereby the power transmission shaft 5 rotates in the direction of the central axis (see FIG. 6). ..

The worm wheel 5a housed in the casing 6a is held in the casing 6a by the shaft holding parts 5b shown in FIG. Further, the power transmission shaft 5 connected to the worm wheel 5a is housed in the first tubular body 3a connected to the upper end of the opening of the casing 6a via the flange 4 (see FIGS. 2 and 5). Further, the casing 6a and the flange 4 are integrated by inserting a pin 23 into the overlapping portion thereof.
Further, the worm gear 7 housed in the casing 6b ₁ is held by the shaft holding part 7a, and the opening of the casing 6b ₁ is sealed by the lid body 6b ₂ .
Further, the end portion of the worm gear 7 on the side where the screw portion is not formed is provided with the connecting portion 7b. Then, by connecting a handle (not shown), a rotating device driven by electric power, or the like to the connecting portion 7b, the worm gear 7 can be easily rotated.

As described above, since the expansion / contraction device 2 of the deck plate support 1 according to the present embodiment includes the worm wheel 5a and the worm gear 7, the rotation of the power transmission shaft 5 can be directly operated with respect to the expansion / contraction device 2. It can be performed by indirect operation using a handle, a rotating device driven by electric power, or the like.
Therefore, according to the deck plate support 1 according to the present embodiment, it is possible to simplify the work of attaching / detaching the telescopic device 2 to / from the attachment target (for example, H-shaped steel 19 or the like). Therefore, according to the deck plate support 1 according to the present embodiment, it is possible to provide a deck plate support having excellent operability.

Next, the multiple cylinder 3 according to the deck plate support 1 according to the present embodiment will be described with reference to FIGS. 2, 7 to 9.
FIG. 7 is a perspective view showing the second cylinder and the third cylinder of the deck plate support according to the embodiment of the present invention in an exploded manner. Further, FIG. 8A is a perspective view of the third tubular body according to the embodiment of the present invention, and FIG. 8B is a side view showing the inside of the third tubular body so as to be transparent. Further, FIGS. 9A and 9B are perspective views showing the relationship between the second cylinder and the third cylinder according to the embodiment of the present invention during operation. The same parts as those shown in FIGS. 1 to 6 are designated by the same reference numerals, and the description of their configurations will be omitted.
As shown in FIG. 2 above, the multiple cylinder 3 according to the deck plate support 1 according to the present embodiment is the first cylinder 3a (see FIG. 5) located on the outermost side and forming a square cylinder. , A second cylinder 3b housed in the first cylinder 3a to form a square cylinder, and a third cylinder 3c in which a part thereof is housed in the second cylinder 3b. Has been done.
More specifically, in the multiple cylinder 3 according to the present embodiment, the connecting body composed of the first cylinder 3a and the casing 6a forms the outermost cylinder of the multiple cylinder 3. Therefore, in the deck plate support 1 according to the present embodiment, the lower end of the casing 6a is a fixed end portion 2b of the telescopic device 2. When the first cylinder 3a and the casing 6a are formed as an integral cylinder, this cylinder is the outermost cylinder of the multiple cylinder 3.

Further, as shown in FIGS. 7 and 8, the third tubular body 3c constituting the multiple tubular body 3 according to the present embodiment is a square tubular tubular body 3c ₁ having a screw portion 25 on the inner side surface thereof. , A simple square tubular body 3c ₂ , a cylindrical cylindrical body 3c ₃ having a screw portion 22 on the outer surface, and a simple square tubular body 3c ₄ are arranged in this order from the vertically downward side. It is connected in series with.
Then, the screw portion 25 of the cylinder 3c ₁ in the third cylinder 3c as described above and the screw portion 5c formed on the outer surface of the power transmission shaft 5 shown in FIG. 5 are screwed together. ing.
Further, in the telescopic device 2 according to the present embodiment, as shown in FIGS. 5, 7 and 8, the first tubular body 3a, the second tubular body 3b, and the second tubular body 3b constituting the multiple tubular body 3 according to the present embodiment, and , The cylinder 3c ₁ and the cylinder 3c ₂ in the third cylinder 3c all have a square tubular shape, and the first cylinder 3a located on the outermost side of the multiple cylinder 3 is pinned to the casing 6a. It is fixed by 23. Therefore, when the power transmission shaft 5 is rotated around its central shaft, the tubular body 3c ₁ screwed with the threaded portion 5c of the power transmission shaft 5 rotates together with the power transmission shaft 5. It moves in the direction of the central axis of the power transmission shaft 5.
Therefore, in the expansion / contraction device 2 according to the present embodiment, the power transmission shaft 5 rotates forward and reverse with respect to the central axis by rotating the worm gear 7 in the forward and reverse directions, and the power transmission shaft 5 rotates on the outer surface of the power transmission shaft 5 with this operation. The third tubular body 3c moves up and down in the direction of its central axis. As a result, the expansion / contraction device 2 expands and contracts in the direction of its central axis.

Further, as shown in FIGS. 7 and 8, the tubular body 3c ₁ constituting the third tubular body 3c is provided with a protrusion 24a at the vertically lower end portion on the outer surface thereof. Further, the second tubular body 3b is provided with a hooking claw 24b at a vertically upper end portion on the inner side surface thereof. Then, in the multiple cylinder 3 according to the present embodiment, the protrusion 24a provided on the cylinder 3c ₁ in the third cylinder 3c and the hooking claw 24b provided on the second cylinder 3b have a hooking structure. By forming the above, the second tubular body 3b and the third tubular body 3c are integrated in series via this hooking structure.
2 (c) and 9 (a) show a state in which the second cylinder 3b and the third cylinder 3c are connected in series to extend the multiple cylinder 3 to the maximum extent. .. Further, the hooking structure of the protrusion 24a and the hooking claw 24b is released, and the cylinder 3c ₁ and the cylinder 3c ₂ constituting the third cylinder 3c are housed in the hollow portion of the second cylinder 3b. 2 (a) and 9 (b) show the state in which the multiple cylinder 3 is the shortest.
Therefore, in the telescopic device 2 according to the present embodiment, the tubular body 3c ₁ is provided with the protrusion 24a and the hooking claw 24b at the connecting portion between the second tubular body 3b and the third tubular body 3c. When sliding in the direction of the central axis of the power transmission shaft 5, the second cylinder 3b is pulled up vertically by the cylinder 3c ₁ (third cylinder 3c), or the second cylinder is moved vertically downward. 3b can be lowered and lowered (see FIGS. 2A to 2C).

Then, even when the third tubular body 3c according to the present embodiment accommodates a part of the second tubular body 3b and the third tubular body 3c in the first tubular body 3a and is contracted to the maximum extent. A non-contained area B (see FIGS. 7 to 9) that is not accommodated in the first tubular body 3a is provided. More specifically, the non-receiving region B includes a cylindrical body 3c ₃ comprising a threaded portion 22, with which (FIGS. 7 to be composed of a cylindrical body 3c ₄ which is fixed integrally with the cylindrical body 3c ₃ 9).
Further, a nut-shaped position adjusting portion 17 is screwed to the screw portion 22 of the tubular body 3c ₃ . Then, by rotating the position adjusting portion 17 on the screw portion 22 with the central axis thereof as the base axis, the position of the position adjusting portion 17 on the screw portion 22 can be changed steplessly.

Further, as shown in FIGS. 7 and 9, the position adjusting unit 17 may include at least one or more operating levers 18 projecting on its outer surface (arbitrary selection component).
In this case, the operation of rotating the position adjusting unit 17 in the circumferential direction can be easily performed. Thereby, the operability of the deck plate support 1 according to the present embodiment can be improved.
The operation lever 18 in the position adjustment unit 17 is not always necessary, and instead of providing the operation lever 18, unevenness is formed on the outer surface of the position adjustment unit 17 to prevent slippage during the rotation operation. You may. In this case as well, the position adjusting unit 17 can be easily operated by human fingers.
Further, in the present embodiment, the upper end of the third tubular body 3c forms the slide end portion 2a of the telescopic device 2. Therefore, the first stopper 8a is provided at the upper end of the third tubular body 3c.

Subsequently, with reference to FIGS. 2, 10 to 12 according to the present embodiment, the supporting arm portion 13 of the deck plate support tool 1 according to the present embodiment and the configuration attached thereto will be described.
FIG. 10A is a perspective view of the support arm portion and the configuration attached thereto in the deck plate support according to the embodiment of the present invention, and FIG. 10B is an exploded view of the support arm portion and the configuration attached thereto. It is a perspective view which shows. Further, FIG. 11 is an image view of a cross section showing a state in which a square pipe constituting a deck plate and a steel beam arranged below the square pipe are supported by the deck plate support according to the embodiment of the present invention. Further, FIG. 12 is a perspective view showing how the deck plate support according to the embodiment of the present invention supports the square pipe constituting the deck plate and the steel beam arranged below the square pipe. The same parts as those shown in FIGS. 1 to 9 are designated by the same reference numerals, and the description of their configurations will be omitted.
As shown in FIGS. 10A and 10B, the deck plate support 1 according to the present embodiment has a support arm portion 13 for supporting a support object arranged on the outer surface side of the telescopic device 2. It has. Further, the supporting arm portion 13 is made of, for example, a flat plate body arranged in the horizontal direction. More specifically, the supporting arm portion 13 is fixed to, for example, a square tubular supporting arm portion holding portion 15, and a hollow tubular annular portion is formed at the lower end portion of the supporting arm portion holding portion 15. 16 may be fixed (optional component).
In this case, in the deck plate support 1 according to the present embodiment, the hollow portion of the supporting arm portion holding portion 15 and the hollow portion of the annular portion 16 communicate with each other.

Then, as shown in FIG. 2, in the deck plate support 1 according to the present embodiment, the third tubular body 3c is inserted into the communication hole between the support arm portion holding portion 15 and the annular portion 16. At this time, the position adjusting portion 17 is arranged on the lower end side of the annular portion 16 as a separate body from the annular portion 16. In this case, the position adjusting portion 17 screwed to the third tubular body 3c prevents the supporting arm portion holding portion 15 and the annular portion 16 from sliding on the outer surface of the third tubular body 3c and falling. Functions as a blocking stopper. As a result, the supporting arm portion 13 and the configuration (supporting arm portion holding portion 15 and annular portion 16) attached thereto can be held on the outer surface of the third tubular body 3c.
Further, in the deck plate support 1 according to the present embodiment, as described above, the position adjusting portion 17 moves on the screw portion 22, so that the annular portion 16 indirectly becomes the third tubular body 3. Move on the peripheral side. That is, by moving the position adjusting portion 17 in the screw portion 22, the supporting arm portion 13 can be moved in the direction of the central axis of the third tubular body 3c.
At this time, the load acting on the support arm portion 13 is constantly supported by the position adjusting portion 17 via the support arm portion holding portion 15 and the annular portion 16.
Therefore, in the deck plate support 1 according to the present embodiment, the supporting object (for example, a square pipe constituting the deck plate, a steel beam supporting the square pipe, etc.) is supported by the supporting arm portion 13. Even if the position adjusting unit 17 is moved as it is, the support object does not lose its support and falls.
Therefore, according to the deck plate support 1 according to the present embodiment, the holding position of the support object supported by the support arm 13 can be easily and safely and steplessly changed in the central axis direction of the telescopic device 2 ( A deck plate support that can be fine-tuned) can be provided.
In the deck plate support tool 1 according to the present embodiment, the case where the support arm portion holding portion 15 and the annular portion 16 are separately configured is described as an example, but these are integrally configured. May (optional component). Also in this case, the effect that the support arm portion 13 can be moved in conjunction with the slide of the position adjusting portion 17 can be exhibited.

The support arm portion 13 in the deck plate support tool 1 according to the present embodiment may be composed of only the first support arm portion having an arbitrary form (arbitrary selection component). However, in this case, unlike the first support arm portion 13a shown in FIGS. 1 to 4 and 10 to 12, the end portion 26a of the steel beam 26 in the first support arm portion 13a Needs to be modified into a form that can be directly or indirectly supported.
In this case, for example, as shown in FIG. 12, the square pipe 21 constituting the deck plate and the steel beam 26 are stacked and arranged while intersecting with each other, or the deck plate is configured as shown in FIG. When the square pipe 21 and the steel beam 26 are arranged in parallel with each other, the supporting arm portion 13 for directly or indirectly supporting the end portion 21a of the square pipe 21 arranged on the vertically upper side and The support arm portion 13 for directly or indirectly supporting the end portion 26a of the steel beam 26 arranged on the vertically lower side thereof and the support arm portion 13 are also used by one type of first support arm portion. ..
When the supporting arm portion 13 for supporting the end portion 21a of the square pipe 21 and the supporting arm portion 13 for supporting the end portion 26a of the steel beam 26 are also used in this way, the support target is It is necessary to move the support arm 13 to an appropriate position each time it changes. Therefore, although the operability of the deck plate support 1 according to the present embodiment is slightly reduced, there is an advantage that the structure of the deck plate support 1 itself can be simplified.

Alternatively, as shown in FIGS. 2, 10 to 12, the support arm portion 13 in the deck plate support tool 1 according to the present embodiment includes a first support arm portion 13a having a desired form and the first support arm portion 13a. Two types of a second support arm 13b, which is arranged directly below the support arm 13a of 1 and also has a desired shape, may be provided (optional component).
In this case, for example, as shown in FIG. 12, a structural material made of H-shaped steel 19 is arranged in a frame shape, and a square pipe 21 constituting a deck plate is arranged in a hollow portion thereof while intersecting with the square pipe 21. When the steel beams 26 are laminated and arranged, the end portion 21a of the square pipe 21 can be indirectly supported by the first supporting arm portion 13a. Further, the end portion 26a of the steel beam 26 arranged vertically downward thereof can be directly supported by the second supporting arm portion 13b.
In this case, the support arm portion 13 has only one type of support arm portion 13, and the mounting position of the support arm portion 13 is changed as desired so as to support both the square pipe 21 and the steel beam 26. The positioning work can be simplified. That is, when the support arm portion 13 includes the first support arm portion 13a and the second support arm portion 13b, the second support arm portion 13a is automatically positioned by positioning the first support arm portion 13a. The positioning work of the supporting arm portion 13b can be completed.
Therefore, according to the deck plate support tool 1 in which the support arm portion 13 is composed of the first support arm portion 13a and the second support arm portion 13b, the installation work of the deck plate can be performed more efficiently. Can be done.

In FIG. 12, a case where either the end portion 21a of the square pipe 21 or the end portion 26a of the steel beam 26 is supported by the deck plate support 1 according to the present embodiment will be described as an example. However, as shown in FIG. 11, for example, the end portion 21a of the square pipe 21 and the end portion 26a of the steel beam 26 can be simultaneously supported by the deck plate support 1 according to the present embodiment.
In particular, in the latter case, the square pipe 21 constituting the deck plate and the steel beam 26 supporting the deck plate are arranged in parallel with each other and while being laminated in the vertical direction. In this case, for example, the distance between the H-shaped steels 19 to which the deck plate support 1 is to be installed is too large, and the steel beams 26 cannot be arranged in a state of being crossed with respect to the square pipe 21. Even below, by arranging the steel beam 26 in parallel with the square pipe 21, the load acting on the square pipe 21 can be supported by the steel beam 26.
Therefore, according to the deck plate support tool 1 according to the present embodiment, the support arm portion 13 includes two types, the first support arm portion 13a and the second support arm portion 13b. The steel beam 26 can be arranged vertically below the square pipe 21 regardless of the arrangement direction of the pipe 21. Therefore, the load acting on the square pipe 21 can always be supported by the steel beam 26. As a result, the work of forming the concrete floor surface using the reusable deck plate provided with the square pipe 21 can be performed more safely.

Further, in the deck plate support 1 according to the present embodiment, as shown in FIGS. 11 and 12, the end portion 21a of the square pipe 21 is placed on the first support arm portion 13a, for example, via the square timber 20. Can be supported. In this case, the deck plate support is compared with the case where the end 21a of each square pipe 21 is individually supported by the support arm 13 (for example, the first support arm 13a) of the deck plate support 1. The number of 1 used can be reduced.
Although not particularly shown, the end portion 21a of each square pipe 21 can be individually supported by the supporting arm portion 13 (for example, the first supporting arm portion 13a) of the deck plate support tool 1. In this case, it is necessary to prepare the same number of deck plate supports 1 as the end portion 21a of the square pipe 21.

Further, in FIGS. 11 and 12, the case where the end portion 26a of each steel beam 26 is individually supported by the second supporting arm portion 13b of the deck plate support 1 is described as an example. For example, in the support form of the square pipe 21 shown in FIGS. 11 and 12, in the second support arm portion 13b, for example, the end portions of the plurality of steel beams 26 indirectly via the square timber 20 or the like. 26a can be supported. However, in this case, in order to allow the square timber 20 and the like to be supported by the second supporting arm portion 13b, the form of the second supporting arm portion 13b is changed to a form different from that shown in the drawing. Need to be modified.
In this case, for example, the number of deck plate supports 1 required to simultaneously support both the end 21a of the square pipe 21 and the end 26a of the steel beam 26 by one deck plate support 1 is determined by the square pipe. It can be less than the total number of ends 21a of 21 or the total number of ends 26a of the steel beam 26. As a result, the work of attaching and detaching the deck plate support 1 to and from the H-shaped steel 19 can be performed quickly and easily.

Further, in the deck plate support 1 according to the present embodiment, as shown in FIG. 12, one end portion 21a of the square pipe 21 is supported by one first support arm portion 13a. Alternatively, as described above, it is assumed that the end portions 26a of the plurality of steel beams 26 are supported by one second supporting arm portion 13b.
Therefore, it is extremely dangerous if the supporting arm portion 13 is unintentionally dropped during the operation of the position adjusting portion 17. However, in the deck plate support 1 according to the present embodiment, the position adjusting portion 17 that supports the load of the supporting arm portion 13 (the first supporting arm portion 13a and the second supporting arm portion 13b) is the third. It is screwed on the outer surface of the cylinder 3c of. Therefore, the supporting arm portion 13a does not lose its support and fall when the position adjusting portion 17 is operated.
Therefore, according to the deck plate support 1 according to the present embodiment, it is possible to provide a deck plate support having excellent safety.

In addition, in the deck plate support 1 according to the present embodiment, the support arm portion 13 may be provided with a reinforcing plate 14 directly under the support arm portion 13 (optional component). More specifically, the reinforcing plate 14 which is vertically installed on the lower surface of the supporting arm portion 13 (the flat plate body forming the first supporting arm portion 13a or the second supporting arm portion 13b) and is made of the flat plate body. May be provided.
In this case, since the load of the support arm portion 13 (the first support arm portion 13a or the first support arm portion 13a and the second support arm portion 13b) can be supported by the reinforcing plate 14. , The strength of the support arm portion 13 according to the present embodiment can be improved.
Therefore, according to the deck plate support 1 according to the present embodiment provided with the reinforcing plate 14, it is possible to provide a deck plate support having excellent strength and durability.
In the present embodiment, the case where the square pipe 21 constituting the deck plate and the steel beam 26 arranged under the square pipe 21 have the same form is described as an example, but the square pipe 21 and the steel beam are described. The 26 forms may be different. In this case, it is necessary to prepare the support arm portion 13 (first support arm portion 13a and second support arm portion 13b) suitable for each form.

Here, the first stopper 8a and the second stopper 8b provided at both ends of the expansion / contraction device 2 of the deck plate support 1 according to the present embodiment will be described in detail.
As shown in FIGS. 1, 3 and 4, in the deck plate support 1 according to the present embodiment, the first stopper 8a is composed of, for example, a bent plate 8a ′ formed by bending a metal flat plate body. At the same time, the second stopper 8b may be formed of, for example, a holding plate 8b'made by bending a flat metal plate body (optional component).
In this case, when the telescopic device 2 according to the present embodiment is attached to the H-shaped steel 19, the lower flange 19b of the H-shaped steel 19 can be held by the holding plate 8b'. As a result, it is necessary to manually hold the telescopic device 2 until the power transmission shaft 5 of the telescopic device 2 is operated to bring the first stopper 8a (bent plate 8a') to the upper flange 19a. It disappears.
Further, since the first stopper 8a is composed of the bent plate 8a', the slide end 2a (here, the bent plate 8a') of the telescopic device 2 reaches the upper flange 19a of the H-shaped steel 19 at the same time. , The installation work of the expansion / contraction device 2 on the H-shaped steel 19 can be completed.
Further, when the telescopic device 2 according to the present embodiment is removed from the H-shaped steel 19, it is not necessary to manually hold the telescopic device 2 when operating the power transmission shaft 5, so that the work can be simplified. Can be done.
Therefore, since the telescopic device 2 according to the present embodiment includes the bent plate 8a'and the holding plate 8b', the work of attaching and detaching the deck plate support 1 to the H-shaped steel 19 can be greatly simplified. ..

Further, as shown in FIGS. 1, 3, 4, and 7, the first stopper 8a and the second stopper 8b in the deck plate support 1 according to the present embodiment are the first stopper 8a and the second stopper 8a. A through hole 10 formed in each of the stoppers 8b, a bolt 11 screwed freely from the through hole 10, and a nut 12 for fixing the bolt 11 at a desired position are provided. May be optional components (both are optional components).
In this case, as shown in FIGS. 3 and 4, when the telescopic device 2 of the deck plate support 1 according to the present embodiment is attached to, for example, the H-shaped steel 19 to be installed, the upper flange of the H-shaped steel 19 is attached. The head of the bolt 11 is led out from each of the first stopper 8a and the second stopper 8b locked to the lower flange 19a and the lower flange 19b, and the upper flange 19a and the lower flange 19b are pressed by the tips thereof. In that state, the bolt 11 may be fixed by the nut 12.
In this case, as shown in FIGS. 3 and 4, the expansion / contraction device 2 can be firmly fixed in the gap 19c of the H-shaped steel 19. Therefore, when the deck plate support 1 according to the present embodiment is used, the deck plate support 1 is unintentionally detached from the H-shaped steel 19, so that the square pipe 21 constituting the deck plate and the square pipe 21 are removed. The risk of the supporting steel beam 26 falling unintentionally can be significantly reduced.
Therefore, since the first stopper 8a and the second stopper 8b of the deck plate support 1 according to the present embodiment include the bolts 11 and nuts 12 as described above, when the deck plate support 1 is used. The safety can be greatly improved.

Further, in the deck plate support 1 according to the present embodiment, the expansion / contraction device 2 is attached to the H-shaped steel 19 because the holding plate 8b'which is the second stopper 8b is provided with the bolt 11 and the nut 12. At that time, the holding plate 8b'can be firmly fixed to the lower flange 19b. As a result, the telescopic device 2 can be expanded and contracted while the operator completely releases his / her hand from the telescopic device 2. Therefore, the work of attaching and detaching the deck plate support 1 to the H-shaped steel 19 can be further simplified.
Therefore, according to the deck plate support 1 according to the present embodiment, the operability can be significantly improved as compared with the case where the holding plate 8b'is not provided with the bolt 11 and the nut 12.

In addition, as shown in FIGS. 1, 3, 4 and 5, the holding plate 8b'in the deck plate support 1 according to the present embodiment has a reinforcing member 9a and a reinforcing member 9b for preventing its deformation. May be provided (optional component).
In this case, the strength of the holding plate 8b'can be improved. As a result, it is possible to provide the deck plate support 1 having excellent strength and durability.
A sufficient reinforcing effect can be expected only by adding a flat plate-shaped reinforcing member 9a to the contact surface of the holding plate 8b'with the lower flange 19b. In addition to this, by adding the reinforcing member 9b for maintaining the three-dimensional shape of the holding plate 8b', the rigidity and strength of the holding plate 8b' can be further improved.

Finally, a modified example of the deck plate support 1 according to the present embodiment will be described with reference to FIG.
FIG. 13 is a cross-sectional image view of a support according to a modified example of the embodiment of the present invention. The same parts as those shown in FIGS. 1 to 12 are designated by the same reference numerals, and the description of the configuration thereof will be omitted.
In the deck plate support 1 according to the present embodiment as described above, for example, the length when the telescopic device 2 is maximized is changed as desired, and the first stopper 8a and / or the second stopper 8a and / or the second By changing the shape of the stopper 8b as desired and further changing the shape of the support arm 13 as desired, it is used as a support tool 1A for supporting any support object other than the deck plate. be able to.
In such a support tool 1A, for example, at a construction site or the like, a telescopic device 2 in the support tool 1A is bridged between beams made of H-shaped steel 19 to temporarily hold building materials and scaffolding. Can be used as a temporary fixture for.

In the deck plate support 1 according to the present embodiment described above, the non-accommodation area B and the support arm 13 (see FIGS. 7 to 9 above) are provided only in the third cylinder 3c. However, as shown in FIG. 13, the non-accommodating region B and the supporting arm portion 13 are provided in a single unit or a plurality of sets in each of the first cylinder body 3a to the third cylinder body 3c. It may be provided (optional component). In addition, in FIG. 3, as an example thereof, each cylinder (first cylinder 3a to third cylinder 3c) is provided with a non-containment region (non-containment region B _{1 to} B ₃ ) and a set of supporting arms 13. The case of preparing is shown. Alternatively, the non-accommodation region B and the supporting arm portion 13 may be provided on any one or more cylinders constituting the multiple cylinder 3 (not shown, optional optional component).
According to the support 1A according to the modified example of the present invention having the above configuration, for example, in an indoor space, a pair of support 1A is installed between the floor surface and the ceiling (for example, a beam material), and a pair of the support 1A is further provided. By erection or fixing, for example, a shelf board or a rod body to the support arm portion 13 provided at the same vertical height in the support tool 1A, it can be used as a detachable shelf or a hanger rack.
Therefore, according to the support tool 1A according to the modified example of the present embodiment, it is possible to provide a highly versatile support tool that can be used as a new building facility or furniture.

Further, the telescopic device 2 according to the present embodiment does not need to be specified in the form shown in FIGS. 1 to 13, and a form other than those shown in these drawings can be adopted. More specifically, the deck plate support 1 according to the present embodiment comprises a multi-cylinder body in which at least two or more cylinder bodies are housed in a nested manner as the expansion / contraction device 2, and the multi-layer cylinder body. Any screw jack structure can be used as long as it has a power transmission shaft that expands and contracts in the direction of the central axis of the individual cylinders without rotating them.
Further, as a specific structure for preventing the rotation of the multiple cylinder 3, for example, as shown in each figure of the present application, each cylinder constituting the multiple cylinder 3 is a square cylinder, and the outermost portion thereof. The rotational movement of the square cylinders arranged in the above is regulated, or the cylinders constituting the multiple cylinders 3 are slidably fitted or engaged with each other in the direction of the central axis thereof to prevent their rotation. Various conventionally known structures can be appropriately adopted.

As described above, the present invention is a reusable deck plate mainly used in a slab construction method, a support tool capable of supporting any other support object, and a deck plate support using the same support tool. It is a tool and can be used in technical fields related to architecture, furniture, interiors, and the like.

1A ... Support 1 ... Deck plate support 2 ... Telescopic device 2a ... Slide end 2b ... Fixed end 3 ... Multiple cylinder 3a ... First cylinder 3b ... Second cylinder 3c ... Third cylinder 3c ₁ ~ 3c ₄ ... Cylinder 4 ... Flange 5 ... Power transmission shaft 5a ... Worm wheel 5b ... Shaft retention part 5c ... Screw part 6a ... Casing 6b ₁ ... Casing 6b ₂ ... Lid 7 ... Worm gear 7a ... Shaft retention part 7b ... Connection part 8a ... First stopper 8a'... Bent plate 8b ... Second stopper 8b' ... Holding plate 9a ... Reinforcing member 9b ... Reinforcing member 10 ... Through hole 11 ... Bolt 12 ... Nut 13 ... Supporting arm 13a ... 1st support arm 13b ... 2nd support arm 14 ... Reinforcing plate 15 ... Support arm holding 16 ... Ring 17 ... Position adjustment 18 ... Operating lever 19 ... H-shaped steel 19a ... Upper Flange 19b ... Lower flange 19c ... Air gap 20 ... Square material 21 ... Square pipe 21a ... End 22 ... Threaded part 23 ... Pin 24a ... Protrusion 24b ... Hooking claw 25 ... Threaded part 26 ... Steel beam 26a ... End part B, B _{1 to} B ₃ ... Non-contained area

Claims (6)

A multiple cylinder in which a plurality of cylinders are arranged in a nested manner, and a power transmission that is arranged on the central axis of the multiple cylinders to expand and contract the multiple cylinders while preventing the individual cylinders from rotating. A telescopic device consisting of a screw jack structure equipped with a shaft,
A support arm portion that is slidably provided on the outer surface of at least one of the cylinders constituting the telescopic device and directly or indirectly supports the support object is provided.
The tubular body provided with the supporting arm portion includes a non-accommodating area that is not accommodated in the hollow portion of the outermost tubular body constituting the multiple tubular body.
This non-containment area
The screw part formed on the peripheral side surface and
The position adjustment part screwed into this screw part and
Provided with an annular portion that is provided around the outer surface of the non-containment region, the position adjusting portion regulates sliding in the non-containment region, and directly or indirectly supports the support arm portion. A support that features. The telescopic device
A worm wheel provided on the power transmission shaft and
The support according to claim 1, further comprising a worm gear that meshes with the worm wheel. The support according to claim 1 or 2, wherein the telescopic device is provided with stoppers at both ends in the central axial direction. In the support according to claim 3,
The supporting arm portion is provided at least on the cylinder body arranged on the innermost side of the cylinder body group constituting the multiple cylinder body.
Assuming that the stopper attached to the end of the slide that slides in the direction of the central axis of the telescopic device is the first stopper, the first stopper is a bent plate formed by bending a flat plate material.
When the stopper attached to the fixed end portion that does not slide in the telescopic device is used as the second stopper, the second stopper is a holding plate formed by bending a flat plate material into a U-shaped or U-shaped cross section. A deck plate support that is characterized by being. The support arm is
A first supporting arm that directly or indirectly supports the end of the square pipe that constitutes the deck plate,
It is provided with a second support arm that is arranged directly below the first support arm and directly or indirectly supports the end of the steel beam that is arranged under the square pipe. The deck plate support according to claim 4, wherein the deck plate support is provided. Both the first and second stoppers
A through hole penetrating the flat plate material and
The deck plate support according to claim 4 or 5, wherein a bolt that is freely screwed into the through hole is provided.