JP2017166586A - Suspension support tool and support structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a suspension support tool capable of simply and preferably attaching with respect to a floor plate, and a support structure using the suspension support tool.SOLUTION: A suspension support tool 11 for suspending a duct 7 on a floor plate 1 having apertures 4 formed at prescribed intervals, comprises: locking parts 13 extending from both short side parts of a rectangular support plate 12 in a direction orthogonal to the support plate; an extension part 14 extending from the intermediate position of a pair of the locking parts 13 of the support plate 12; and a long nut 15 connected to the extension part 14. The suspension support tool 11 is installed by inserting the extension part 14 and the long nut 15 into the apertures 4 of the floor plate 1 from above; by inserting the locking parts 13 into the different apertures 4; and by bringing the support plate 12 into contact on the top face of the floor plate 1. A pair of the suspension support tools 11 are installed; a full screw bolt 21 is connected to the long nut 15 of each suspension support tool 11; and a supporting material 23 is put across a pair of the full screw bolts 21 so as to form a support structure in which the duct 7 can be set on the supporting material 23.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a suspension support used when a duct or piping is suspended from a floor plate made of general structural steel plates, and a support structure using the suspension support.

  In recent years, outdoor air conditioners that are installed for internal air conditioning in factories and buildings, such as outdoor air conditioners that take in outdoor air, air-cooled chillers that exchange heat with the outside air, cooling towers or outdoor units, etc. In addition, in electrical equipment, such as cubicles that transform the power supplied to these equipment (hereinafter referred to as air conditioning equipment, etc.), multiple devices that make up air conditioning equipment on the construction side can be installed at high positions while being aligned. Since the platform is assembled with H-shaped steel and the like, and the maintenance space for multiple devices such as air conditioning equipment is shared, general structural steel sheets are spread on the top level of the platform so that it can go in any direction on the plane as an inspection walkway Increasing cases. For ducts, pipes, cables, etc. connected to air conditioning equipment, etc., through the lower part of the inspection corridor that enables maintenance to air conditioning equipment etc., for ease of alignment and effective use of plane space It is. Thereby, compared with the case where a duct etc. are installed above an inspection walkway, an operator's access to an air-conditioning installation etc. can be made favorable, or design property can be improved. By the way, office buildings that are high-rise buildings and factories with high heat loads have a need to stack a large number of air conditioning facilities in multiple layers, and fresh outside air is used for fresh outside air intake and heat exchange with outside air. Therefore, it is necessary to promote the circulation of outside air through the maintenance inspection corridor and eliminate the retention of heat. The inspection corridor, which is a general structural steel plate, requires air distribution performance and has a large slit. It is a floor board material provided with openings.

  By the way, conventionally, when a duct, piping, or the like is provided below the inspection corridor, as shown in FIG. 6, a pair of beams that support a floor plate material 41 that is a general structural steel plate installed as an inspection corridor. For the material 42 (H steel), the sub-material 43 (typically a material in which two angle steels are welded with a back-to-back spacer spaced apart from each other) is clamped, for example. The support member 45 (mountain shape) is attached so as to be suspended through the hardware and attached to the sub member 43 so as to suspend the pair of full screw bolts 44 and further to span between the lower ends of the pair of full screw bolts 44. Steel) and a duct 46 and the like are installed on the support member 45. However, when the structure is adopted, the beam 42 (H steel), which is a construction side structural material, is a sturdy material, but is provided at a large installation pitch, and the sub-material 43 has ducts and piping that are not small in weight on the equipment side. Because it is suspended, the sub-material 43, which requires a length corresponding to the pitch of the beam material 42, becomes a large steel material that requires a certain moment of inertia of the cross section due to bending and buckling performance. There is a concern that workability will be reduced and installation costs will increase.

  On the other hand, as a technique for suspending a support material extending in the horizontal direction below the floor board material, a grating in which a plurality of openings having a long hole shape is regularly formed with respect to a rectangular board material in plan view. The floor plate material is provided with a support plate that is supported by contacting the upper surface of the floor plate material, and a full screw bolt that is welded to the lower surface of the support plate and is inserted from above into the opening of the floor plate material. There is a technique in which a suspension support is attached and a support material is connected to all screw bolts of the suspension support (see, for example, Patent Document 1).

JP 2001-33592 A

  However, in Patent Document 1, an upper component including a nut screwed to the entire screw bolt and a flange welded to the lower surface of the nut between the entire screw bolt of the suspension support and the support member; A mechanism for suspending and supporting the support material in the lower part, a lower component part having a flange in the upper part, a flange part in the upper part and the lower part, and an upper component part and a lower part for adjusting the height of the support material An intermediate component connected to the component is interposed. For this reason, the complexity of the structure etc. which connect between the whole screw volt | bolt of a suspension support tool and a support material will be caused, and there exists a concern that the fall of installation workability | operativity, an increase in installation cost, etc. may be caused.

  In Patent Document 1, an upper stopper is welded to the upper end of a support bolt inserted from above into the opening of the grating floor, and the bent portion of the upper stopper is locked to the upper surface of the grating floor. Therefore, the support bolt inserted from above the grating floor is screwed with a fixing nut where the tip protrudes from the lower surface of the grating floor by a predetermined amount. It is fixed to the shape. In other words, it is necessary to insert support bolts from the top surface of the grating floor, and to fasten a fixing nut from the bottom surface of the grating floor. Installation as a construction work on the fixed grating floor requires floor surface work and a scaffold. It is a large-scale construction that requires both an underfloor work, and there is a concern that the installation workability may be reduced and the installation cost may be increased.

  The present invention has been made to solve the above-described problems and the like, and the purpose thereof is a suspension support that can be easily and suitably attached to a floor plate material that is a general structural steel plate, And it is providing the support structure using a suspension support tool.

  In the following, each means suitable for solving the above-mentioned purpose will be described in terms of items. In addition, the effect etc. peculiar to the means to respond | correspond as needed are added.

Means 1. A support plate supported on the upper surface of the floor plate material of the general structural steel plate with openings formed at predetermined intervals;
A locking portion extending downward from each of a pair of opposing side portions of the support plate;
An extending portion extending downward from an intermediate position of the pair of the locking portions of the support plate;
A long nut provided at a lower portion of the extending portion and capable of connecting all screw bolts;
By inserting the extension part and the long nut from above into the opening part of the floor board material, the lower surface of the support plate is brought into contact with the upper surface of the floor board material, and the locking part is extended. A suspension support characterized by being configured to be inserted into an opening different from the opening through which the part is inserted and locked to the peripheral edge of the opening.

  According to the means 1, the installation of the suspension support is completed simply by inserting the extending portion through the opening of the floor board material and bringing the support board into contact with the floor board material. Moreover, since a long nut is installed under the floor board | plate material by installing a suspension support tool, the full threaded bolt made into suitable length can be connected with the said long nut. And while installing the said suspension support tool and a full screw bolt in a pair, and attaching a support material so that it may span between the lower end parts of a pair of full screw bolts, a duct and piping on the said support material Can be installed. For this reason, for example, in a configuration in which the support material is suspended not on the floor board material but on the beam material that supports the floor board material, or in the suspension support, all screw bolts are provided (welded) instead of nuts, Compared with a configuration in which a mechanism that allows the height adjustment of the support material to be interposed between the support material and a structure that suspends the duct, etc., improved workability at the time of installation and removal, suppression of installation cost, etc. You can plan. This is due to the effective use of openings that are spread evenly in floorboard materials with sufficient strength that are laid down in the maintenance space of air conditioning equipment, etc., to suspend objects for equipment such as ducts, piping, and cable racks. This means that the weight can be received only by the extension that gives the strongest strength as a steel material, and it means that a heavy object can be effectively suspended by a short suspension support having a small second moment of section. When suspended from a material that is strong but has a large pitch, such as a beam in the prior art, it is clear compared to the case where a member with a large moment of inertia is required on the lateral deflection side. It is advantageous in terms of the amount of steel and ease of handling.

  In addition, for example, the length of the full screw bolt connected to the nut of the suspension support can be changed as appropriate according to the application, compared with the case where the full screw bolt is directly welded to the lower surface of the support plate. And the convenience can be improved. Furthermore, the suspension support can be made as compact as possible, and the ease of carrying and storage can be improved. In addition, the position of the support material is brought closer to the floor board material (the position of the duct and the like supported by the support material is made higher) than the structure in which the support material is suspended from the beam material that supports the floor board material instead of the floor board material. The space below the floorboard material can be used effectively, and the height of the space (position of the floorboard material) can be reduced at the facility design stage to reduce costs.

  In addition, the pair of locking portions of the suspension support is inserted into an opening other than the opening through which the extending portion is inserted among the openings formed in the floor board material, and is engaged with the peripheral portion of the opening. Since it is stopped, it is possible to prevent the suspension support from being displaced or rotated in the locking direction. Furthermore, even if the suspension support is installed on the floor board material, the suspension support is only protruded upward from the floor board material by the thickness of the support board, so that it is possible to avoid a situation where the worker's passage is hindered. Can do.

  Mean 2. In the vertical direction, the distance (height difference) between the lower end portion of the locking portion and the upper end portion of the long nut is longer than the vertical width of the portion of the floor board where the opening is formed. Suspension support for the means 1 characterized.

  According to the means 2, when installing the suspension support, the position of the suspension support can be adjusted so that the locking nut is inserted into the corresponding opening after passing the long nut through the opening. . Thereby, for example, the amount of displacement that can be adjusted can be increased compared to a configuration in which the position of the locking portion must be adjusted in a state in which the long nut is not completely pulled down from the opening, and the convenience can be increased. Improvements can be made. In particular, for example, in a case where the long nut passes through the opening of the floor board material, before the long nut completely passes through the opening (the entire long nut reaches the lower position of the floor board material), To avoid a situation in which the stop part comes into contact with the upper surface of the floor board material, and it can be used only by shifting the position a little, but it cannot be used (the risk of generating defective products increases). Can do.

Means 3. In the support structure using the suspension support described in the above means 1 or 2, the suspension support provided in a pair at a predetermined distance;
A pair of full screw bolts respectively connected to the long nut of the suspension support provided in a pair;
A support member attached so as to be bridged between the lower end portions of the all screw bolts provided in a pair;
A structure in which a duct, a cable rack, or a pipe is installed above the support material,
The opening of the floorboard material has a long hole shape,
The extending structure and the lateral width of the locking part are configured to be shorter than the width in the longitudinal direction of the opening of the floor board material.

  According to the means 3, a duct etc. can be reliably supported by providing a pair of suspension support tool, a pair of all screw bolts, and a support material. Also, since the configuration for mounting all screw bolts at a predetermined height position and the configuration for mounting a support material at a predetermined height position are both simple, work for installation and removal of ducts, etc. It is possible to improve performance and reduce installation costs.

  Further, the lateral width of the extension part and the locking part is shorter than the width in the longitudinal direction of the opening part of the floor board material, so that the suspension support is installed in the floor board material and the opening part of the floor board material. It is configured to be slidable along the longitudinal direction. For this reason, when the distance between the pair of suspension supports slightly deviates from the length of the support material, it can be eliminated by sliding the position of the suspension support a little.

It is sectional drawing which shows the support structure of a duct. It is a perspective view which shows the state which installed the suspension support tool in the floor board material. It is sectional drawing which shows the state which connected all the screw bolts to the suspension support tool installed in the floor board material. It is a front view of a hanging support tool. It is a side view of a suspension support tool. It is sectional drawing which shows the support structure of the conventional duct.

  Hereinafter, an embodiment will be described with reference to the drawings. As shown in FIG. 1, in this embodiment, a plurality of devices such as an air conditioner (not shown) are assembled with an H-shaped steel frame or the like that can be installed at a high position while being aligned and arranged. In order to share the equipment maintenance space, the floor board material 1 is laid with the upper level of the equipment gantry as a virtual floor, and the duct 7 is suspended and supported by the floor board material 1. As shown in FIG. 2, the floor board material 1 includes a main body portion 2 having a substantially rectangular shape in plan view, and leg portions 3 extending downward from both long side portions of the main body portion 2. The main body 2 is formed with a plurality of openings 4 arranged at equal intervals in the longitudinal direction of the main body 2. The opening 4 of the present embodiment has a long hole shape that is wide in the short direction of the main body 2 and extends from the vicinity of one long side of the main body 2 to the vicinity of the other long side. Yes.

  And the floor board material 1 is spread and installed in the direction which makes a longitudinal direction orthogonal to the beam material 9 so that it may span between a pair of beam materials 9. FIG. The floor board 1 is provided with a lower surface rib 5 extending downward from the peripheral edge of the opening 4, and the protruding length of the lower surface rib 5 from the main body 2 is larger than the protruding length of the leg 3 from the main body 2. Is also made shorter.

  Now, in this embodiment, in order to make the floor board material 1 support the duct 7, the suspension support tool 11 is used. As shown in FIGS. 4 and 5, the suspension support 11 extends downward from the rectangular support plate 12 supported on the upper surface of the floor board material 1 and from both short side portions of the support plate 12. The extending portion 14 extending downward from the intermediate position of the pair of engaging portions 13 of the support plate 12 and the side surface of the extending portion 14 are vertically attached. Long nut 15 (long nut). The support plate 12 and the locking portion 13 are formed by bending both end portions of a metal plate having a rectangular shape in a plan view toward the lower side at a substantially right angle. The extending portion 14 is a metal plate having a width in the short direction that is the same as the width in the short direction of the support plate 12, and passes through the central portion in the longitudinal direction of the support plate 12. The lower end of the support plate 12 extends parallel to the direction, aligns the positions of both ends in the short direction with the positions of both ends in the short direction of the support plate 12, and is orthogonal to the lower surface of the support plate 12. It is configured by welding. Further, the long nut 15 is welded to the lower portion of the side surface of the extending portion 14.

  The support plate 12, the locking portion 13, and the extending portion 14 are all 2.5 mm in thickness, the support plate 12 has a width in the longitudinal direction of 67 mm, and the locking portion 13 protrudes from the support plate 12. The length is 12.5 mm. Moreover, the width | variety in the transversal direction of the support plate 12 and the extension part 14 is 30 mm. Furthermore, the length obtained by adding the thickness of the extending portion 14 and the outer diameter of the long nut 15 is 20 mm or less (for example, 18.5 mm).

  On the other hand, the short width of the opening 4 of the floor board 1 is 20 mm, and the distance between the openings 4 arranged in the longitudinal direction of the floor board 1 (main body 2) is 20 mm. For this reason, as shown in FIGS. 2 and 3, the opening 4 of the floor board 1 is aligned with the longitudinal direction of the opening 4 and the short direction of the support plate 12 and the extending portion 14. The extending part 14 and the long nut 15 can be inserted from above. Further, the pair of locking portions 13 can be inserted into the opening 4 different from the opening 4 through which the extending portion 14 is inserted.

  However, in the present embodiment, the length obtained by adding the thickness of the extension portion 14 and the outer diameter of the long nut 15 is only slightly shorter than the short width of the opening 4. In the situation located on the inner peripheral side of the opening 4 (lower surface rib 5), the suspension support 11 can hardly be displaced in the short width direction of the opening 4.

  Furthermore, since the extended portion 14 is welded to the center portion in the longitudinal direction of the support plate 12 and the long nut 15 is welded to the side surface of the support plate 12, the long nut 15 is inserted into the opening 4 of the floor board material 1. When the suspension support 11 is lowered straight as it is, one of the locking portions 13 comes into contact with the upper surface of the floor board material 1.

  In this regard, in the present embodiment, as shown in FIG. 3, the distance (height difference) between the lower end portion of the locking portion 13 and the upper end portion of the long nut 15 in the vertical direction is the floor plate material 1. It is longer than the vertical width of the part where the opening 4 is formed. For this reason, in a situation where the lower end portion of the locking portion 13 is at the same height as the upper surface of the floor board material 1, the entire long nut 15 passes through the opening 4 (lower surface rib 5) of the floor board material 1. It will be located below. Accordingly, the suspension support 11 is displaced in the short direction of the opening 4 to align the positions of the locking portions 13 and the opening 4, and the locking portions 13 are inserted into the corresponding openings 4. It can be made to.

  Furthermore, the lower surface of the support plate 12 can be brought into contact with the upper surface of the floor board material 1 by inserting the extending portion 14 and the pair of locking portions 13 into the opening 4. As a result, the support plate 12 is supported by the floor board material 1, and the pair of locking portions 13 are locked to the peripheral edge portion (lower surface rib 5) of the opening portion 4. Misalignment in the longitudinal direction), rotation, and the like are prevented.

  Moreover, as shown in FIG. 1, the suspension support tool 11 of this embodiment is used in a pair. That is, when installing the duct 7, first, the pair of suspension supports 11 are installed on the floor board 1 so as to be separated from each other by a predetermined distance. Further, the entire screw bolts 21 are respectively connected to the long nuts 15 of the pair of suspension supports 11 so as to be suspended. Each full screw bolt 21 is screwed with a locking nut 22 on the side to be screwed with the long nut 15. After the full screw bolt 21 is screwed onto the long nut 15, the locking nut 22 is attached. It moves to the long nut 15 side, and the locking nut 22 and the long nut 15 are pressed against each other.

  In addition, about the length of all the screw volt | bolts 21, it sets suitably according to the magnitude | size etc. of the duct 7 installed. In the present embodiment, the lower end portion of the extending portion 14 is not extended downward (at the same height) as the lower end portion of the long nut 15, and the locking nut 22 is connected to the long nut 15. It is easier to move to the side.

  Further, the support member 23 is attached so as to span between the lower ends of the pair of all screw bolts 21. The support member 23 is composed of angle steel, and the angle steel is formed with a pair of insertion holes (not shown) through which the lower portions of the pair of full screw bolts 21 can be respectively inserted. Then, two support nuts 24 are screwed into the lower end portions of the full screw bolts 21 in a state where the full screw bolts 21 are inserted through the insertion holes.

  As described above, the support member 23 extending in the horizontal direction is attached to the floor board member 1 via the pair of suspension supports 11 and the pair of full screw bolts 21. Furthermore, in the extending direction of the duct 7, a plurality of support members 23 are similarly attached at a predetermined distance, and the duct 7 is installed above each support member 23, so that the duct 7 is suspended and supported by the floor board material 1. It is like that.

  Further, the longitudinal width of the opening 4 of the floor board 1 is about 200 mm, and the suspension support 11 having a width (lateral width) of 30 mm in the short direction of the support plate 12 and the extending portion 14 is the support plate 12. Since the extending portion 14 is installed on the floor board 1 so that the short direction of the extending portion 14 is the longitudinal direction of the opening 4, the suspension support 11 is slid along the longitudinal direction of the opening 4 to support the suspension. The position of the tool 11 can be adjusted.

  As described in detail above, according to the present embodiment, the suspension support 11 is installed by inserting the extension portion 14 into the opening 4 of the floor board material 1 and bringing the support board 12 into contact with the floor board material 1. Just complete it. Moreover, since the long nut 15 is installed under the floor board | plate material 1 by installing the suspension support tool 11, the full screw bolt 21 made into suitable length with respect to the said long nut 15 is connected. Can do. And while installing the said suspension support tool 11 and the full screw volt | bolt 21 in a pair, and attaching the support material 23 so that it may span between the lower end parts of a pair of full screw volt | bolts 21, of the said support material 23 A duct 7 can be installed on the top. For this reason, for example, in the configuration in which the support member 23 is suspended not on the floor plate member 1 but on the beam member 9 that supports the floor plate member 1 or in the suspension support member 11, a full screw bolt is provided instead of the long nut 15 (welded). ) Compared with a configuration in which a mechanism capable of adjusting the height of the support member 23 is interposed between the entire screw bolt and the support member 23, the full screw bolt 21 is mounted at a predetermined height position. A structure and the structure for attaching the support material 23 to a predetermined height position can be simplified. Therefore, it is possible to improve the workability when installing or removing the configuration in which the duct 7 is suspended, and to reduce the installation cost.

  Further, for example, as compared with the case where the full screw bolt is directly welded to the lower surface of the support plate 12, the length of the full screw bolt 21 connected to the long nut 15 of the suspension support 11 is appropriately changed according to the application. It is possible to improve versatility and convenience. Furthermore, the suspension support 11 can be made as compact as possible, and the ease of carrying and storage can be improved. In addition, the position of the support material 23 is closer to the floor board material 1 (the duct 7 supported by the support material 23) than the structure in which the support material 23 is suspended not on the floor board material 1 but on the beam material 9 that supports the floor board material 1. The position of the floorboard material 1 can be increased), and the space below the floorboard material 1 can be used effectively, or the height of the space (position of the floorboard material 1) can be reduced at the facility design stage to reduce costs, etc. Can be planned.

  Moreover, a pair of latching | locking part 13 of the suspension support tool 11 is inserted in the opening part 4 different from the opening part 4 in which the extension part 14 was penetrated among the opening parts formed in the floor board material 1, and this opening Since it is latched by the peripheral part of the part 4, it can prevent that the suspension support tool 11 shifts in position in this latching direction, or rotates. Further, even if the suspension support 11 is installed on the floor board material 1, the suspension support 11 protrudes upward from the floor board material 1 by the thickness of the support board 12, and thus hinders the passage of the operator. The situation can be avoided.

  Further, in the vertical direction, the distance (height difference) between the lower end portion of the locking portion 13 and the upper end portion of the long nut 15 is greater than the vertical width of the portion of the floor board 1 where the opening 4 is formed. Since the suspension support 11 is installed, the suspension support 11 is inserted so that the long nut 15 is passed through the opening 4 and the locking portion 13 is inserted into the corresponding opening 4 when the suspension support 11 is installed. Can be adjusted. Thereby, for example, the adjustable displacement amount can be increased as compared with the configuration in which the position adjustment of the locking portion 13 must be performed in a state where the long nut 15 is not fully pulled down from the opening 4. The convenience can be improved. In particular, as in the present embodiment, when there is not enough room for the long nut 15 to pass through the opening 4 of the floor board material 1, the long nut 15 passes through the opening 4 (the entire long nut 15 is the same as that of the floor board material 1. Before reaching the lower position), the locking portion 13 comes into contact with the upper surface of the floor board material 1 and can not be used even though it can be used by shifting the position a little more (risk of occurrence of defective products). Can be avoided).

  Further, the width (lateral width) of the support plate 12 (the locking portion 13) and the extending portion 14 in the short direction is shorter than the longitudinal width of the opening 4 of the floor board material 1. Thereby, the suspension support tool 11 is configured to be slidable along the longitudinal direction of the opening 4 of the floor board material 1 in a state of being installed on the floor board material 1. For this reason, when the distance between the pair of suspension supports 11 is slightly deviated from the length of the support member 23, it can be eliminated by sliding the position of the suspension support 11 a little.

  In addition, it is not limited to the description content of the said embodiment, For example, you may implement as follows. Of course, other application examples and modification examples not illustrated below are also possible.

  (A) Although the said embodiment demonstrated the structure which installs the duct 7 in the support material 23 suspended and supported by the suspension support tool 11 and the full screw volt | bolt 21, it replaces with the duct 7 or in addition, piping Or a cable may be installed. Further, the shape and the like of the floor board material 1 (the number and arrangement of the openings 4) are not particularly limited, and when the hanging support 11 is installed, the extending portion 14 of the hanging support 11 and It is only necessary that the pair of locking portions 13 can be inserted into the different openings 4.

  (B) In the said embodiment, you may comprise so that the suspension support tool 11 can be installed in the flooring board material 1 from the lower surface side of the flooring board material 1, or can be collect | recovered (for example, the support board 12 and The lateral width of the extending portion 14 is made shorter than the width of the opening 4 of the floor board 1 in the short direction). In this case, the position of the suspension support 11 can be changed or the number can be increased or decreased while installing the duct 7 or adjusting the position, thereby improving workability and the like.

  (C) Further, at least the upper surface of the support plate 12 of the suspension support 11 is marked so as to be easily distinguished from the floor plate material 1 (for example, a color different from that of the floor plate material 1 is colored). It is good also as sticking a sticker etc.). In this case, it is possible to easily grasp the position of the suspension support 11, and it is possible to more reliably prevent the operator from tripping over the suspension support 11 or eventually the support member 23 from being inclined. Furthermore, confirmation of the installation position of the suspension support 11 and confirmation of completion of collection can be facilitated.

  (D) In FIG. 1, the pair of suspension supports 11 are installed on the same floor board material 1, but may be configured to be installed on different floor board materials 1. In the above-described embodiment, the support plate 12, the locking portion 13, and the extending portion 14 may be integrally formed. Furthermore, the short width of the support plate 12 and the short width of the extending portion 14 can be made different. In addition, the outer peripheral edge of the support plate 12 may be tapered. In this case, it becomes more difficult for an operator or the like to trip over the outer peripheral edge of the support plate 12, and the support plate 12 can be easily climbed over by a carriage or the like.

  DESCRIPTION OF SYMBOLS 1 ... Floor board material, 4 ... Opening part, 7 ... Duct, 11 ... Suspension support, 12 ... Support plate, 13 ... Locking part, 14 ... Extension part, 15 ... Long nut, 21 ... All screw bolt, 22 ... Locking nuts 22, 23 ... support materials.

Claims (3)

A support plate supported on the upper surface of the floor plate material of the general structural steel plate with openings formed at predetermined intervals;
A locking portion extending downward from each of a pair of opposing side portions of the support plate;
An extending portion extending downward from an intermediate position of the pair of the locking portions of the support plate;
A long nut provided at a lower portion of the extending portion and capable of connecting all screw bolts;
By inserting the extension part and the long nut from above into the opening part of the floor board material, the lower surface of the support plate is brought into contact with the upper surface of the floor board material, and the locking part is extended. A suspension support characterized by being configured to be inserted into an opening different from the opening through which the part is inserted and locked to the peripheral edge of the opening.   In the vertical direction, a distance between a lower end portion of the locking portion and an upper end portion of the long nut is longer than a vertical width of a portion of the floor board material where the opening is formed. Item 1. A hanging support. In the support structure using the said suspension support tool described in the said Claim 1 or 2, The said suspension support tool provided in a pair at a predetermined distance,
A pair of full screw bolts respectively connected to the long nut of the suspension support provided in a pair;
A support member attached so as to be bridged between the lower end portions of the all screw bolts provided in a pair;
A structure in which a duct, a cable rack, or a pipe is installed above the support material,
The opening of the floorboard material has a long hole shape,
The extending structure and the lateral width of the locking part are configured to be shorter than the width in the longitudinal direction of the opening of the floor board material.

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