JP6703178B1 - Lining plate mounting structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lining plate mounting structure capable of extremely easily and surely fixing a lining plate on a receiving beam by using one kind of rotating jig and releasing the fixing. SOLUTION: A fixing bolt 3 arranged so as to penetrate a lower surface plate 2a of a lining plate 2 laid on a receiving beam 1, and a bolt shaft portion 3a of the fixing bolt 3 protruding below the lower surface plate 2a. And a tightening nut (11) attached to a bolt shaft portion (3a) of a fixing bolt (3) protruding above the lower surface plate (2a). The fastening hardware 4 rotates together with the fixing bolt 3 by the tightening of the fastening nut 11 and latches on the upper flange 1a of the receiving beam 1, and the reaction force receiving portion 4a of the fastening hardware 4 contacting the lower surface plate 2a serves as a fulcrum. Rotate upward and attach so that the upper flange 1a is sandwiched. At the position where the reaction force receiving portion 4a of the lower surface plate 2a abuts, a first concave groove portion 7a that prevents the fastening metal 4 from rotating by engaging the upper end portion of the reaction force receiving portion 4a is provided. [Selection diagram] Figure 1

Description

TECHNICAL FIELD The present invention relates to a lining plate mounting structure for fixing a lining plate laid on a receiving beam to the receiving beam, and fixing and releasing the fixing of the lining plate using one type of rotary jig. It is designed to be easy and reliable.

In particular, during underground construction such as subway construction in the city center, by installing a receiving beam on the surface of the ground and laying a lining plate on it, it is possible to prevent underground construction from hindering traffic on the ground. There is. In addition, at that time, the lining plate is detachably fixed onto the receiving beam by using a dedicated fitting.

As a lining plate mounting structure for fixing a lining plate on a receiving beam, for example, those disclosed in Patent Documents 1 and 2 are known.

The lining plate attachment structure of Patent Document 1 will be described with reference to FIGS. 11 to 14. A fixing bolt 33 is vertically installed by penetrating each corner portion of the lower surface plate 32 a of the lining plate 32. A holding metal fitting 35 and a mounting nut 37 are attached to the tip end of a shaft portion 33a protruding below the lower surface plate 32a.

Further, the reinforcing plate 32b is attached to the lower surface of the lower surface plate 32a so as to face the holding metal fitting 35, and the coil spring 34 is attached between the reinforcing plate 32b and the holding metal fitting 35. The shaft portion 33a of the fixing bolt 33 penetrates the coil spring 34.

Further, a rotation stopper fitting 36 that prevents the holding fitting 35 from rotating is attached to the lower surface of the lower surface plate 32a. The holding metal fitting 35 is a component for holding the upper flange 31a of the lining girder 31 between the tip portion of the holding metal fitting 35 and the lower surface plate 32a of the lining plate 32, is formed in a substantially rectangular shape, and is a fulcrum on the upper side thereof. Through holes 35c are formed in the vicinity of the reaction force receiving portion 35a and the fulcrum reaction force receiving portion 35a, respectively. In addition, a pair of rotation stopping portions 35b, 35b are formed on the lower surface of the holding metal fitting 35.

The fulcrum reaction force receiving portion 35a is formed in a rib shape that is continuous with one end side portion of the holding metal fitting 35 in the long side direction in the short side direction of the holding metal fitting 35 and rises right above at a substantially right angle.

The through hole 35c penetrates the holding metal fitting 35 vertically and is formed to have an inner diameter slightly larger than the outer diameter of the shaft portion 33a of the fixing bolt 33.

Further, the rotation stopping portion 35b is formed in a rib shape parallel to the long side direction of the holding metal fitting 35 with the through hole 35c interposed between the both end portions on the short side direction side of the holding metal fitting 35, and the rotation stopping portions 35b, 35b. A mounting nut 37 is sandwiched between the two.

The mounting nut 37 is screwed into the shaft portion 33a of the fixing bolt 33 and is fixed to the tip portion of the shaft portion 33a. As a result, the fixing bolt 33 and the holding metal fitting 35 are integrally rotatable around the vertical axis and freely rotatable.

On the other hand, a guide collar 39 and a tightening nut 38 are installed between the lower surface plate 32a of the lining plate 32 and the bolt head 33c of the fixing bolt 33.

The guide collar 39 is installed in a state where the shaft portion 33a of the fixing bolt 33 penetrates, and the tightening nut 38 is screwed to the shaft portion between the bolt head 33c of the fixing bolt 33 and the guide collar 39.

With such a configuration, when the lining plate 32 is stored, the holding metal fitting 35 is attached along the rotation stopping metal fitting 36 in the axial direction of the lining girder 31 and the tightening nut 38 is tightened, thereby holding the metal fitting. 35 can be housed in each corner of the lining plate 32 so as not to move (see FIG. 14(b)).

Further, from the state where the holding metal fittings 35 are oriented in the axial direction of the lining girder 31, the holding metal fittings 35 are oriented in the direction perpendicular to the axis of the lining girder 31 (see FIG. 14(a)), and the lining plate 32 is set to the lining girder When fixing on 31, first, loosen the tightening nut 38 (rotate counterclockwise) and continue to rotate counterclockwise, so that the holding metal fitting 35 extends below the upper flange 31a of the liner girder 31. Lower.

In this case, the rotation of the holding metal fitting 35 is prevented by the rotation stopper metal fitting 36, and the mounting nut 37 attached to the shaft portion 33a of the fixing bolt 33 is held between the rotation stopper portions 35b of the holding metal fitting 35. Thus, the fixing bolt 33 does not rotate together with the tightening nut 38 even if the tightening nut 38 is loosened.

Therefore, when the tightening nut 38 is loosened, the holding metal fitting 35 moves down together with the fixing bolt 33 due to the restoring force of the coil spring 34 (see FIG. 12).

Next, the fixing bolt 33 is turned (turned 90 degrees clockwise), the orientation of the holding metal fitting 35 is directed in the direction perpendicular to the axis of the lining girder 31, and the tip portion is inserted below the upper flange 31a (Fig. 14(a)).

The sandwiching metal fitting 35, which is turned in the direction perpendicular to the axis of the lining girder 31, hits the rotation stopping metal fitting 36 and does not rotate further clockwise.

Next, the lining plate 32 can be firmly fixed on the lining girder 31 by tightening the tightening nut 38 clockwise. In this case, by tightening the tightening nut 38, the holding metal fitting 35 rises together with the fixing bolt 33, and the tip side rotates upward with the fulcrum reaction force receiving portion 35a hitting the reinforcing plate 32b as a fulcrum, thereby lining The upper flange 31a of the girder 31 can be strongly clamped by the front end portion of the clamp member 35 and the lower surface plate 32a of the lining plate 32.

The construction of the lining plate mounting structure of Patent Document 2 is basically the same as the invention of the lining plate mounting structure of Patent Document 1 (see FIGS. 15 to 17), and a new reinforcing plate 46 The coil spring 49 is attached, and the rotation stopper fitting 36 in Patent Document 1 is not provided.

Briefly described, a reinforcing plate 46 is attached at the attachment position of the reinforcing plate in the lining plate attachment structure of Patent Document 1, instead of the reinforcing plate. Further, the coil spring 49 is installed in the guide collar 50 with the bolt shaft portion 43a of the fixing bolt 43 passing through the coil spring 49.

The reinforcing plate 46 has a bolt through hole through which the shaft portion 43a of the fixing bolt 43 penetrates, and a plurality of hooking protrusions 46a and 46a and hooking protrusions 46b and 46b are formed on the lower surface thereof.

The hooking protrusions 46a, 46a are formed on the opposite side of the receiving beam 41 with the bolt through hole interposed therebetween, and the hooking protrusions 46b, 46b are provided on both end sides in the axial direction of the receiving beam 41 with the bolt through hole interposed therebetween. Has been formed.

The latching projections 46a, 46a are formed at a predetermined interval in the axial direction of the receiving beam 41, and the latching projections 46b, 46b are formed at a predetermined interval in the direction orthogonal to the axis of the receiving beam 41.

In such a configuration, from the state where the holding metal fitting 45 is oriented in the axial direction of the receiving beam 41 (the short side direction of the lining plate) (see FIGS. 15(c) and 16(a)), the holding metal fitting 45 receives the receiving beam. To fix the lining plate 42 on the receiving beam 41 in the direction perpendicular to the axis of 41 (see FIGS. 15 and 16(b)), push the fixing bolt 43 downward and rotate it around the vertical axis. The direction of the holding metal fitting 45 is oriented in the direction perpendicular to the axis of the receiving beam 41, and the tip side portion of the holding metal fitting 45 is locked to the lower side of the upper flange 41a of the receiving light beam 41, and the pushing into the fixing bolt 43 is released.

When the pushing of the fixing bolt 43 is released, the holding metal fitting 45 moves up together with the fixing bolt 43 by the restoring force of the coil spring 49, and the fulcrum reaction force receiving portion 45a of the holding metal fitting 45 engages with the hooking protrusions 46a, 46a. As a result, rotation of the clamp 45 is blocked (see FIG. 16(b)).

Therefore, when the tightening nut 48 is strongly tightened, the tip side portion of the holding metal fitting 45 is rotated upward with the fulcrum reaction force receiving portion 45a abutting on the reinforcing plate 46 as a fulcrum to cover the tip portion of the holding metal fitting 45. The upper flange 41a of the receiving beam 41 can be strongly sandwiched by the lower surface plate 42a of the work plate 42.

JP 2009-19417 JP JP 2006-161549 A Patent No. 3366110

However, in the lining plate mounting structure of Patent Document 1, when fixing the lining plate and releasing the fixing of the lining plate, there are at least two types of rotary jigs that rotate a fixing bolt and a rotary jig that rotates a tightening nut. Since a rotating jig is required, it is necessary to carry two different rotating jigs for each corner of the lining plate, which makes fixing and releasing the fixing plate extremely cumbersome and troublesome.

In addition, since it is necessary to install parts such as fixing bolts as a set with anti-rotation metal fittings, it is necessary to pay attention to the positional relationship between parts such as fixing bolts and anti-rotation metal fittings when attaching parts such as fixing bolts. It was troublesome to install parts such as fixing bolts.

On the other hand, in the lining plate mounting structure of Patent Document 2, since both the reaction force fulcrum portion and the locking projection of the holding metal fitting are formed to project, the fulcrum reaction force receiving portion is caught by the locking projection, There was a risk that the clamps would not work smoothly.

The present invention has been made to solve the above problems, and it is possible to fix a lining plate to a receiving beam extremely easily and surely using one type of rotating jig, and to fix the lining plate. An object of the present invention is to provide a lining plate mounting structure that can be released.

The present invention relates to a fixing bolt arranged to penetrate a lower surface plate of a lining plate laid on a receiving beam, and a fastener attached to a bolt shaft portion projecting to the lower side of the lower surface plate of the fixing bolt. It is an invention of a lining plate mounting structure comprising a metal object and a tightening nut attached to a bolt shaft portion of the fixing bolt protruding above the lower surface plate of the fixing bolt, wherein the fastening metal object is the tightening nut. Rotation with the fixing bolt to engage with the flange of the receiving beam and rotate upward with a fulcrum reaction force receiving portion provided on one end side of the fastening metal member that abuts the lower surface plate as a fulcrum. And the flange is mounted so as to sandwich the flange, and the fulcrum reaction force receiving portion engages with the position of the fulcrum reaction force receiving portion of the lower surface plate that prevents rotation of the fastening metal object. A recess is provided, and the lining plate can be easily fixed on the beam by simply tightening (turning clockwise) the tightening nut.

Further, the fastening metal is attached so as to rotate together with the fixing bolt by the rotation of the tightening nut to release the engagement with the flange of the receiving beam, and the fulcrum reaction force receiving portion of the lower surface plate is attached. At the abutting position, there is provided a second concave portion that prevents rotation of the fastening metal piece that is disengaged from the flange of the receiving beam by engaging the fulcrum reaction force receiving portion. The feature is that the lining plate can be released easily by simply loosening the tightening nut (turning it counterclockwise).

Further, when the tightening nut is pushed downward, the fastening metal is lowered together with the fixing bolt, the fulcrum reaction force receiving portion is separated from the first and second recesses, and the lower portion of the fixing bolt is lowered. Due to the restoring force of the spring attached to the bolt shaft portion protruding above the face plate, the fastening metal piece rises together with the fixing bolt, and the fulcrum reaction force receiving portion engages with the first and second recesses. With such a configuration, it is possible to extremely easily fix and release the fastener.

Furthermore, since the first and second recesses are provided on the fastening metal fittings that are attached to the lower surface plate so as to face the fastening metal fittings, they can be retrofitted and can be easily installed on an existing lining plate. Can be installed.

The present invention relates to a fixing bolt arranged to penetrate a lower surface plate of a lining plate laid on a receiving beam, and a fastener attached to a bolt shaft portion projecting to the lower side of the lower surface plate of the fixing bolt. It is an invention of a lining plate mounting structure comprising a metal object and a tightening nut attached to a bolt shaft portion of the fixing bolt protruding above the lower surface plate of the fixing bolt, and particularly, only tightening the tightening nut. Thus, the lining plate can be easily fixed on the receiving beam, and the fixing of the lining plate can be easily released simply by loosening the tightening nut. If there is one kind of rotating jig that can be rotated, the fixing and releasing of the fixing of the lining plate can be performed very easily.

FIG. 3 is a cross-sectional view showing an end portion of a lining plate laid on a receiving beam, which is an embodiment of a lining plate mounting structure according to the present invention. FIG. 2 is a cross-sectional view of the end of the lining plate shown in FIG. 1 showing a state in which the fastening metal is lowered together with the fixing bolt to the bottom of the upper flange of the receiving beam by pushing in the tightening nut at the end of the lining plate. At the end of the lining plate shown in FIG. 2, the fastening nut is tightened with the fastening nut so that the fastening metal is hooked to the lower side of the upper flange of the receiving beam in the direction perpendicular to the axis of the receiving beam. It is a sectional view of a work plate end. At the end of the lining plate shown in FIG. 3, a state in which the fastening metal is brought into contact with the reinforcing plate by tightening the tightening nut to rotate upward around the reaction force receiving portion as an axis to clamp the upper flange of the receiving beam. It is sectional drawing of the edge part of a lining board. FIG. 4 is a bottom view showing the positional relationship between the reaction force receiving portion of the fastening metal and the first and second recesses of the reinforcing plate at the end of the lining plate shown in FIGS. 2 and 3 during the rotating operation of the fastening metal. .. It is a figure of a reinforcing plate, Drawing (a) is a bottom view, Drawing (b), and Drawing (c) are a ii line in Drawing (a), and a sectional view taken along the line Loro respectively. It is a modification of this invention, Comprising: It is sectional drawing of the edge of the lining board which the fixing bolt was arrange|positioned upwards at the edge of the lining board shown in FIG. FIG. 8 is a cross-sectional view of the end of the lining plate showing a state in which the fastening metal is lowered to the bottom of the upper flange of the receiving beam together with the fixing bolt by pushing the tightening nut at the end of the lining plate illustrated in FIG. 7. At the end of the lining plate shown in FIG. 8, the state in which the fastening metal is fastened together with the fixing bolt in the direction perpendicular to the axis of the receiving beam by the tightening of the tightening nut and is hooked below the upper flange of the receiving beam. It is a sectional view of a work plate end. At the end of the lining plate shown in FIG. 9, the state in which the fastening metal is in contact with the reinforcing plate by the tightening of the tightening nut is rotated upward about the axis of the reaction force receiving portion to clamp the upper flange of the receiving beam. It is sectional drawing of the edge part of a lining board. It is a figure of the conventional example of a lining board attachment structure which fixes the edge of a lining board on a receiving beam, Drawing (a) is a longitudinal section of a lining board edge, Drawing (b) is a part of it. A plan view and FIG. 6C are cross-sectional views taken along the line of FIG. FIG. 12 is a vertical cross-sectional view showing a state in which, in the lining plate mounting structure illustrated in FIG. 11, the holding fixture is lowered to below the upper flange of the lining girder by loosening the fixing bolt. FIG. 13 is a view of the holding metal fitting shown in FIG. 12, FIG. (a) is a plan view, FIG. (b) is a bottom view, FIG. (c) is a right side view, and FIG. FIG. The rotating operation of the clamp is shown in Fig. (a) is a bottom view of the clamp with the tip of the clamp hooked under the upper flange of the lining girder, and (b) is the tip of the clamp. It is a bottom view of the state where the part separated from the lower side of the upper flange of the lining girder. It is a figure of the other conventional example of the lining board attachment structure which fixes the edge part of a lining board on a receiving beam, and the figure (a) fixed the edge part of a lining board on the lining girder. A sectional view showing a state, a figure (b) is a sectional view showing a state where the fixing of the lining plate is released, and a figure (c) is a plan view showing the rotating operation of the holding metal fitting. In the lining plate mounting structure shown in FIG. 15, the rotating operation of the sandwich metal fittings is shown. FIG. (a) is a bottom view showing a state where the sandwich metal fittings are separated from the upper flange of the receiving beam, and FIG. It is a bottom view showing the state where it was hooked on the upper flange of a receiving beam. It is a figure of a reinforcement plate, Drawing (a) is a top view and Drawing (b) is a hoe line sectional view in Drawing (a).

1 to 6 show an embodiment of a lining plate mounting structure according to the present invention, in which a plurality of lining plates 2 are provided between the receiving beams 1 and 1 made of H-shaped steel. They are laid adjacent to each other in the direction.

The fixing bolt 3 is vertically installed by penetrating each corner portion of the lower surface plate 2a of the lining plate 2 from the upper side to the lower side, and the fixing bolt 3 has a bolt shaft portion 3a protruding downward from the lower surface plate 2a. A fastening metal 4, a rotation stop nut 5, and a locking nut 6 are attached to the tip end portion, respectively.

Further, a fastening hardware receiver 7 is attached to the lower side of the lower surface plate 2a in a state of facing the fastening hardware 4 in the vertical direction, and a lower spring 8 is attached between the fastening hardware 4 and the fastening hardware receiver 7. The bolt shaft portion 3a penetrates the lower spring 8.

The fastener 4 is a component that holds the upper flange 1a of the receiving beam 1 between the tip portion of the fastener 4 and the lower surface plate 2a, and is formed in a substantially rectangular shape.

A reaction force receiving portion 4a and a bolt through hole 4b are formed near one end side portion in the long side direction of the fastening hardware 4 and in the vicinity of the one end side portion, respectively, and a pair of rotation stopping portions is provided at both end side portions in the short side direction. 4c, 4c are formed.

The reaction force receiving portion 4a is formed in a rib shape that is continuous in the short side direction and rises right above at a substantially right angle, and the upper end portion of the reaction force receiving portion 4a is formed in a convex curved surface shape.

The bolt through hole 4b vertically penetrates the fastener 4 at a position separated from the reaction force receiving portion 4a by a certain length in the long side direction, and has an inner diameter (loose hole) larger than the outer diameter of the bolt shaft portion 3a of the fixing bolt 3. Is formed in.

The rotation stoppers 4c, 4c are formed in a rib shape that sandwiches the bolt through hole 4b in the short side direction of the fastening metal piece 4 and is continuous substantially parallel to the long side direction of the fastening metal piece 4 and holds the rotation stop nut 5. Has been done.

The rotation stop nut 5 is screwed to the tip of the bolt shaft portion 3a of the fixing bolt 3, and is fixed to the bolt shaft portion 3a by a loosening prevention nut 6 screwed afterward so as not to rotate. As a result, the fixing bolt 3 and the fastening hardware 4 can freely rotate integrally with each other around the vertical axis of the fixing bolt 3.

A collar 9, an upper spring 10 and a tightening nut 11 are installed between the lower surface plate 2a of the lining plate 2 and the bolt head 3b of the fixing bolt 3.

The collar 9 is a component for ensuring a certain gap between the bolt head 3a of the fixing bolt 3 and the lower surface plate 2a, and is fixed on the lower surface plate 2a by welding. The upper spring 10 is installed in the collar 9 and projects above the collar 9 by a predetermined length.

The bolt shaft portion 3 a of the fixing bolt 3 penetrates the collar 9 and the upper spring 10. Further, the tightening nut 11 is screwed to the bolt head portion 3 b of the fixing bolt 3 and the bolt shaft portion 3 a between the upper spring 10.

As the upper spring 10, a spring having the same diameter and the same free length as the lower spring 8 and having the same amount of restoring force (elastic force) is used. By making the upper spring 10 and the lower spring 8 of the same kind, the types of parts are reduced and the handling becomes easier.

The fastening hardware receiver 7 is formed in a substantially rectangular plate shape (see FIGS. 5 and 6) and is attached to the lower surface plate 2a at a position facing the fastening hardware 4 by welding. Further, a bolt through hole 7a is formed substantially in the center of the fastening hardware receiver 7, and the bolt shaft portion 3a of the fixing bolt 3 penetrates the bolt through hole 7a.

Further, on the lower surface of the fastening hardware receiver 7, a first recess 7b is formed on the opposite side of the receiving beam 1 with the bolt through hole 7a interposed therebetween, and a second recess 7c is formed on one end side of the receiving beam 1 in the axial direction. (See FIGS. 5 and 6(a)).

The first concave portion 7b is formed in the axial direction of the receiving beam 1, and the second concave portion 7c is formed substantially parallel to the axial direction of the receiving beam 1 and continuously for a predetermined length. Further, in both cases, the upper end portion of the reaction force receiving portion 4a of the fastener 4 is formed to have an inner diameter and a depth that can be engaged, and the upper end portion of the reaction force receiving portion 4a is formed into a concave curved surface shape capable of being inscribed. ing.

If the second recessed portion 7c is formed symmetrically in the axial direction of the receiving beam 1 with the bolt through hole 7a interposed, the tip side portion of the fastener 4 may be oriented in either axial direction of the receiving beam 1. Also, it is possible to engage and disengage the tip side portion of the fastening metal 4 with the flange 1a of the receiving beam 1.

In such a configuration, from the state in which the fastener 4 is arranged parallel to the axial direction of the receiving beam 1 (see FIGS. 1 and 5), the fastener 4 is placed in the direction perpendicular to the axis of the receiving beam 1 (see FIG. 3). In order to fix the lining plate 2 on the receiving beam 1, the tightening nut 11 is pushed downward (see FIG. 2), and the fastening hardware 4 is rotated about 90° clockwise about the vertical axis. In the direction perpendicular to the axis of, the front end portion of the fastener 4 is hooked under the upper flange 1a of the beam 1 (see FIGS. 3 and 5).

In this case, when the tightening nut 11 is strongly pushed downward, the female screw part of the tightening nut 11 comes into close contact with the male screw part of the bolt shaft part 3a of the fixing bolt 3, so that when the tightening nut 11 is rotated, the fixing bolt 3 is tightened. Go around with.

Further, since the rotation stop nut 5 attached to the tip of the bolt shaft portion 3 a is sandwiched between the rotation stop portions 4 b and 4 b of the fastening metal piece 4, the fastening metal piece 4 rotates together with the fixing bolt 3 and the tightening nut 11. Therefore, only by turning the tightening nut 11, the tip end portion of the fastening metal 4 can be hooked on the lower side of the upper flange 1a of the beam 1.

If the direction of the fastener 4 (position of the tip end side) is indicated on the bolt head 3b of the fixing bolt 3 by an arrow or the like, the tightening nut 11 may be tightened according to this indication. The front end portion of the fastening metal 4 can be securely hooked to the lower side of the upper flange 1a without visually observing the direction of.

Further, when the pushing of the tightening nut 11 is released in a state where the tip portion of the fastening metal 4 is hooked on the lower side of the upper flange 1a of the receiving beam 1, the fastening metal 4 is fixed by the restoring force of the upper spring 10. Together with this, the upper end of the reaction force receiving portion 4a engages with the first concave portion 7b (see FIGS. 4 and 5). As a result, the fastener 4 is fixed so as not to rotate while being arranged in the direction perpendicular to the axis of the receiving beam 1.

In addition, the fastening hardware 4 rises together with the fixing bolt 3 by the restoring force of the upper spring 10 and the lower spring 8 is compressed between the fastening hardware 4 and the fastening hardware receiver 7, and the restoring force holds the fastening hardware 4 horizontally. It

Further, a recess 7d is formed concentrically with the bolt through hole 7a in the peripheral portion of the bolt through hole 7a of the fastening hardware receiver 7, and the upper end of the lower spring 8 is inserted into the recess 7d, whereby the lower spring 8 is Since it is compressed vertically, the restoring force of the lower spring 8 acts evenly on the peripheral edge of the bolt through hole 4b of the fastening metal 4, and from this point also the fastening metal 4 is held horizontally.

Then, when the tightening nut 11 is further tightened in the clockwise direction, the tip end side portion of the fastener 4 rotates upward with the upper end of the reaction force receiving portion 4a inscribed in the recess 7b as a fulcrum (see FIG. 4). Thereby, the corner portion of the lining plate 2 can be firmly fixed onto the beam 1.

In the state in which the fastener 4 is arranged parallel to the axial direction of the receiving beam 1, the fastener 4 rises together with the fixing bolt 3 by the restoring force of the upper spring 10, and the upper end of the reaction force receiving portion 4 a of the fastener 4 is reached. The part engages in the first recess 7c (see FIG. 5). As a result, the fastener 4 does not rotate in the state of being arranged in the axial direction of the receiving beam 1, so that the fastener 4 can be fixed to the corner portion of the lining plate 2 by tightening the tightening nut 11.

Furthermore, when the fastening metal 4 is rotated with the fixing bolt 3 and hooked on the flange 1a of the receiving beam 1 at a position close to the fastening metal 4 on the lower surface plate 2a, the fastening metal 4 and the flange 1a are locked. If the stopper 12 that prevents the fastener 4 from rotating when it is released is attached, the tightening nut 11 can be tightened more strongly, and the lining plate 2 can be more firmly fixed.

The stopper 12 also functions as a slip prevention member for preventing side slippage of the lining plate 2 installed between the receiving beams 1 and 1 and a leg member when the lining plates 2 are stacked, and is formed of an angle material or the like. can do.

7 to 10 show a modified example of the present invention, in which the fixing bolt 3 is installed so as to penetrate the lower surface plate 2a of the lining plate 2 from the lower side to the upper side of the lower surface plate 2a.

The bolt head 3b of the fixing bolt 3 is the rotation stop nut 5 described in the embodiment of FIGS. 1 to 6, and thus the loosening prevention nut 6 can be omitted.

Further, the fastening hardware 4 and the lower spring 8 are attached to the bolt shaft portion 3 a between the bolt head 3 b of the fixing bolt 3 and the fastening hardware receiver 7. Further, a collar 9 is attached to an upper portion of the lower surface plate 2a of the bolt shaft portion 3a, and an upper spring 10, a tightening nut 11 and a locking nut 6 are screwed together.

In this way, the fixing bolt 3 is installed so as to penetrate the lower surface plate 2a from the lower side upward, and the tightening nut 11 and the locking nut 6 are respectively screwed into the bolt shaft portion 3a above the lower surface plate 2a. Therefore, the male screw portion for tightening the tightening nut 11 and the locking nut 6 may be formed in a certain range of the upper end portion (tip portion) of the bolt shaft portion 3a.

This eliminates the need for the male screw portion of the portion that receives the shearing force of the bolt shaft portion 3a (the portion that penetrates the lower surface plate 2a of the bolt shaft portion 3a), and therefore prevents the strength reduction of the bolt shaft portion 3a due to the provision of the male screw portion. can do.

Further, when the respective parts are attached, the installation of the fixing bolt 3 and the tightening of the tightening nut 11, the locking nut 6 and the like can be performed by a downward work, which is good in workability. Other configurations are the same as those of the embodiment described in FIGS.

INDUSTRIAL APPLICABILITY The present invention can very easily and reliably fix a lining plate laid on a receiving beam on the receiving beam using one type of rotating jig, and releases the fixing of the lining plate. be able to.

1 Receiving Beam 1a Upper Flange 2 Cover Plate 2a Lower Plate 3 Fixing Bolt 3a Bolt Shaft Part 3b Bolt Head 4 Fastening Hardware 4a Reaction Force Receiving Portion 4b Bolt Through Hole 4c Rotation Stopper 5 Anti-rotation Nut 6 Loosening Nut 7 Fastening Hardware receiver 7a 1st recess 7b 2nd recess 8 Lower spring (spring)
9 Color 10 Upper spring (spring)
11 Tightening nut 12 Stopper

Claims (5)

A fixing bolt arranged so as to penetrate the lower surface plate of the lining plate laid on the receiving beam, a fastening hardware attached to a bolt shaft portion projecting below the lower surface plate of the fixing bolt, and In a lining plate mounting structure comprising a tightening nut attached to a bolt shaft portion of the fixing bolt that protrudes above the lower surface plate of the fixing bolt, the fastening metal together with the fixing bolt by rotation of the fastening nut. It rotates and latches on the flange of the receiving beam, and rotates upward to sandwich the flange by using a reaction force receiving portion provided on one end side of the fastening metal member that is in contact with the lower surface plate as a fulcrum. A first recessed portion that is attached to the lower surface plate and that is in contact with the reaction force receiving portion of the lower surface plate, and that blocks the rotation of the fastener by engagement of the reaction force receiving portion. The lining board mounting structure. The lining plate mounting structure according to claim 1, wherein the fastening metal is mounted so as to rotate together with the fixing bolt by the rotation of the tightening nut to release the engagement with the flange of the receiving beam, and A second concave portion is provided at a position of the lower surface plate where the reaction force receiving portion comes into contact with the reaction force receiving portion so as to prevent rotation of the fastening metal piece that is disengaged from the flange. The lining plate mounting structure is characterized in that The lining plate mounting structure according to claim 1 or 2, wherein the fastening hardware descends together with the fixing bolt by pushing the tightening nut downward, and projects above the lower plate of the fixing bolt. It is characterized in that the reaction force receiving portion of the fastener is attached so as to engage with the first and second recesses, respectively, by being lifted by a restoring force of a spring attached to the bolt shaft portion. Lining plate mounting structure. The lining plate mounting structure according to any one of claims 1 to 3, wherein the first and second recesses are provided in a fastening hardware receiver that is mounted on the lower surface plate so as to face the fastening hardware. A lining plate mounting structure characterized in that The lining plate mounting structure according to any one of claims 1 to 4, when the fastening metal member is rotated together with the fixing bolt and hooked on the flange of the receiving beam in the vicinity of the fastening metal member, and A lining plate mounting structure, wherein a stopper is attached to prevent rotation of the fastening metal piece when the engagement of the fastening metal piece and the flange of the receiving beam is released.

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