JP4444468B2 - Grating mounting device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a mounting apparatus for a grating that is used as a lid for a recess that allows water to flow, such as a drainage channel of a road or a catchment.
[0002]
[Prior art]
In general, the grating is arranged between a pair of longitudinal strip-like end plates along the longitudinal direction, and a large number of bearing bars made of I-shaped steel are welded and fixed to both end plates in parallel at regular intervals. On the upper surface side, a plurality of cross bars made of twisted wire rods are mounted in a state orthogonal to the bearing bar to form a lattice, and as a lid for a recess that allows water to flow, such as drainage grooves and drainage basins, It is mounted so that both end portions on the end plate side are fitted to an angle-shaped receiving frame fixed to the opening edge of the recess.
[0003]
However, if such a grating is simply placed on the receiving frame, there is a problem that it generates rattling noise when a car or a person passes over it. In the case of a grating used in a part that frequently passes, deformation due to heavy load is likely to occur, and this deformation increases rattling and increases noise, and the grating jumps up when the car passes and is recessed. There is a risk of disengagement.
[0004]
For this reason, in some parts of the prior art, an anchor bolt is implanted on the bottom side of the receiving frame of the recess, and means for fixing the grating to the anchor bolt via a nut is employed. However, in such a method of fixing with anchor bolts, it takes much time to remove and re-install the grating in cleaning etc., and the threaded portion of the anchor bolt is damaged or rusted due to biting sand etc. There were many cases where it became difficult to remove.
[0005]
On the other hand, as a fixing means for the grating that does not use the anchor bolt, a method of pressing the front end of a fixing bolt screwed from the inside of the grating end plate against the side surface of the frame (Japanese Utility Model Laid-Open No. 55-118088). No. 57-85085), a pin that is biased in the protruding direction by a coil spring is provided on the grating, and a non-slip member fixed to the tip of this pin is pressed against the concrete side of the recess (actual opening) Sho 61-180279), the receiving frame is provided with a bent portion having an inverted L-shaped cross section extending from the upper edge, and the tip end side of the pin penetrated from the inner side of the grating end plate under the bent portion. A method of entering (Japanese Utility Model Publication No. 60-14183) has been proposed.
[0006]
[Problems to be solved by the invention]
However, the method in which the tip of the fixing bolt is pressed against the side of the frame or the anti-slip member at the tip of the pin is pressed against the concrete side is fixed by frictional force. When force is applied, there is a concern that the grating may come off due to the displacement of the pressing portion. In addition, in the method in which the pin is inserted under the bent part of the receiving frame, the grating does not come off, but the rattling cannot be suppressed, and the receiving frame has a material cost and manufacturing for forming the bent part. There is a drawback that the cost is high.
[0007]
In view of the above-described circumstances, the present invention can be used as a mounting device for a grating, so that the grating can be fixed to a recess receiving frame in a stable state without rattling, and the grating can be easily attached and detached. It aims to provide something simple as well.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the grating mounting device according to the invention of claim 1 can be moved to the outside of the side on both sides of the gratings 1A and 1B, if shown with reference numerals in the drawings. A locking member 2 and locking means 3A and 3B for fixing the locking member 2 so as not to move are provided, and a receiving frame 5 fixed to the opening edge of the recess 4 into which the gratings 1A and 1B are fitted. The engaging member 6 of the engaging member 2 is inserted into the engaging portion 2 of the frame 5 by receiving the engaging member 2 of the gratings 1A and 1B fitted in the recess 4. The lock means is configured to be fixed by the lock means 3A and 3B , and the lock means rotates around the pivoting portion 31 and elastically contacts the peripheral surface of the locking member 2 by a spring force; and Rotating piece 3 that can be displaced to a non-locking position that does not elastically contact the peripheral surface It is set to become more configuration.
[0009]
According to the above configuration, the gratings 1 </ b> A and 1 </ b> B fitted in the recess 4 cannot be detached from the receiving frame 5 because the locking member 2 is inserted into the fitting portion 6 of the receiving frame 5. Further, since the locking member 2 is fixed so as not to move by the locking means 3A and 3B, there is no fear that the locking member 2 is pulled out of the fitting portion 6 due to vibration or impact. In addition, since the fixing of the gratings 1A and 1B to the receiving frame 5 and the release thereof can be performed by the withdrawal operation of the locking member 2, the gratings 1A and 1B can be easily attached and detached during cleaning or the like. Further, the locking member 2 can be switched between a non-movable state and a movable state by a turning operation of the turning piece 3B.
[0012]
Wherein the invention of claim 2, in the mounted apparatus grating according to the first aspect, the locking member 2, the locking means 3A around a fulcrum 7c for supporting the member, the lever action by the pressing force of 3B It is set as the structure which is fixed to the insertion part 6 of the receiving frame 5. FIG. In this case, since the locking member 2 is fixed to the insertion portion 6 by the lever action by the locking means 3A and 3B with the fulcrum 7c as a supporting point, the locking member 2 is very strongly attached to the insertion portion. 6 can be fixed.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the grating mounting apparatus according to the present invention will be specifically described below with reference to the drawings. 1 to 5 show a first embodiment, and FIG. 6 shows a second embodiment. In these drawings, 1A and 1B are gratings, 4 is a road crossing drainage groove into which the gratings 1A and 1B are fitted, 5 is The receiving frame is configured to cover the entire surface of the drainage groove 4.
[0014]
The grating 1A used in the first embodiment is made of I-shaped steel (see FIG. 3, simplified in a flat plate shape) between a pair of longitudinal strip-like end plates 11, 11 along the longitudinal direction. A plurality of bearing bars 12 are fixed to both end plates 11 and 11 at both ends and arranged in parallel at regular intervals, and a plurality of (three in the figure) crosses made of twisted wires having a square cross section on the upper surface side. The bar 13 is mounted perpendicularly to the bearing bars 12 to form a lattice. The vertical widths of the end plates 11 and 11 are set to be narrower than the vertical widths of the bearing bars 12. ... protrudes downward from the lower edges of the end plates 11 and 11.
[0015]
In addition, as shown in FIGS. 2 to 5, holding frames 7 are fixed by welding or the like on both sides in the width direction at positions close to both ends in the longitudinal direction of the grating 1 </ b> A between the adjacent bearing bars 12, 12. Has been.
[0016]
That is, the holding frame 7 is formed in a substantially downward U-shape by the upper plate portion 7a and the left and right side plate portions 7b and 7b, and is a horizontal type and its left and right side plate portions 7b and 7b along the grating width direction. The lower edge of the outer surface of the bearing bar 12 is fixed to the lower edge of the bearing bar 12, and the retaining member 2 is held in the holding frame 7. The holding frame 7 includes a through hole 71 in the upper plate portion 7a and a nut 30 fixed concentrically on the lower surface thereof, and the lock bolt 3A is screwed into the nut 30 through the through hole 71 from above. In addition, the side plate portions 7b, 7b have long hole-shaped guide holes 72, 72 extending in the horizontal direction, and only the lower portions of the front end portions of the left and right side plate portions 7b, 7b are respectively inward It has end plate portions 7c and 7c bent in a letter shape, and the lower end surface of the locking member 2 is supported on the end plate portions 7c and 7c, and exerts an insulator action with the end plate portions 7c and 7c as fulcrums as described later It has become.
[0017]
In the locking member 2, a round shaft-shaped locking pin 21 is integrally formed at one end of a slightly flat rectangular shaft-shaped main body portion 20, and guide pins 22 protrude integrally on the left and right side surfaces of the main body portion 20. The guide pins 22 and 22 are fitted into the guide holes 72 and 72 of the holding frame 7 in a state where the locking pin 21 faces the outside of the grating 1A from below the end plate 11, and the above-mentioned As described above, the main body portion 20 of the locking member 2 is placed on and supported by the upper end edges of the end plate portions 7c and 7c near the front of the lower surface. The lock bolt 3 </ b> A faces the rear upper surface of the main body 20 of the locking member 2, and is set so that the tip thereof is pressed toward the rear upper surface of the main body 20 by tightening.
[0018]
Therefore, when the front end of the lock bolt 3A is lifted away from the main body 20, the locking member 2 ends within a regulation range by the guide groove 72 and the guide pins 22 guided by the guide groove 72 as shown in FIG. Unlocked inside from the plate. Thus, the locking pin 21 of the locking member 2 has the front end protruding forward from the end plate 11 at the sliding forward limit position as shown in FIG. The tip is set so as to be located inside the outer surface of the end plate 11.
[0019]
On the other hand, the receiving frame 5 has each latching of the grating 1A in which the horizontal locking holes 6... Are to be fitted to the vertical plate portions 50 a of the L-shaped edges 50 along the stepped portions 4 a on both sides of the drainage grooves 4. It is formed corresponding to the position of the pin 21. Therefore, the inner diameter of each locking hole 6 is set slightly larger than the outer shape of the locking pin 21 of the grating 1A. As the locking hole 6, a drain hole formed when the concrete 51 is placed using the receiving frame 5 as a mold frame may be used as the locking hole 6.
[0020]
In the configuration of the first embodiment, in order to cover the drainage groove 4 with the grating 1A..., The L-shaped edges 50 on both sides of the receiving frame 5 are received on both sides in the width direction of the grating 1A as in the conventional grating. , 50, the holding members 2 of the grating 1A are held at the retreat limit position as shown by the solid line in FIG. Is positioned so as to face each locking hole 6 of the receiving frame 5. Then, after the grating 1A is placed on the receiving frame 5, the locking members 2 are slid in the protruding direction by the guide grooves 72 and the guide pins 22 guided thereby, as shown by the solid line in FIG. When each locking pin 21 is fitted into the locking hole 6 and the lock bolt 3A is rotated and tightened as indicated by the arrow, the locking pin 21 is connected to the rear body portion 20 of the guide pin 22 as shown in the figure. Since it is pressed by the lock bolt 3A, the locking member 2 is urged upward with the end plate portion 7c as a fulcrum, whereby the locking pin 21 comes into strong contact with the upper wall of the locking hole 6 and its reaction force. Thus, the grating 1A is pressed against the L-shaped edge 50 of the receiving frame 5 to hold the grating 1A in the locked state on the receiving frame 5. In this case, when the distance L1 from the end plate portion 7c to the lock bolt 3A is longer than the distance L2 from the end plate portion 7c to the distal end portion of the locking pin 21, the locking pin 21 is locked by the strong lever action. 6 can be engaged with the inner wall. Of course, the distances L1 and L2 can be fixed even if the lengths are equal or L2 is longer than L1.
[0021]
Thus, the grating 1A fitted in the drainage groove 4 is locked so as to be pressed onto the receiving frame 5 by the lock bolt 3A in a state where the locking members 2 are inserted into the locking holes 6 of the receiving frame 5. Therefore, there is no risk of jumping out of the drainage groove 4 when passing through the vehicle, since there is no fear of being pulled out from the locking hole 6 even when subjected to vibration or impact. As a result, the noise associated with the traveling of the car is reduced, and the durability is improved due to the difficulty of deformation. Further, when it is necessary to remove the grating 1A by cleaning the drainage groove 4 or the like, the locking member 2 can be slid only by slightly loosening the lock bolt 3A. The grating 1A can be removed very easily, and after the completion of the required work, the grating 1A that has been removed is fitted back into the drainage groove 4, and the receiving frame 5 is very simply formed by projecting the locking member 2 and tightening the lock bolt 3A. It is possible to return to the original state where it is impossible to leave.
[0022]
As shown in FIG. 6, the grating 1 </ b> B in the attachment device of the second embodiment uses a rotating piece 3 </ b> B instead of the lock bolt 3 </ b> A in the first embodiment as a locking means of the locking member 2. Other than that, the configuration is the same as that of the grating 1A of the first embodiment. Accordingly, in the second embodiment, the same reference numerals are given to the common parts with the first embodiment, and the description thereof is omitted.
[0023]
The turning piece 3B of the grating 1B is made of a leaf spring material that holds a pivot 31 that is horizontally installed between the left and right side plate portions 7b, 7b of the holding frame 7 at one end side. The flat plate portion 3b extending from the curved portion 3a to the free end is disposed above the main body portion 20 of the locking member 2 with the free end side directed inward in the width direction of the grating 1B. Thus, the bending portion 3a of the rotating piece 3B has a maximum radius in a natural state centered on the pivot 31 that is set slightly larger than the shortest distance between the pivot 31 and the upper surface of the main body 20 of the locking member 2. Has been.
[0024]
In the grating 1B, when the locking member 2 is not locked, the rotating piece 3B is naturally supported on the main body 20 of the locking member 2 as shown by the phantom line in FIG. 3a is in contact with the upper surface of the main body portion 20 on the inner side in the grating width direction with respect to the vertical line from the pivot shaft 31, and the flat plate portion 3b is inclined upward. However, when the flat plate portion 3b of the rotating piece 3B is pushed down, the curved portion 3a moves forward with the rotation of the rotating piece 3B, and the upper surface of the main body portion 20 is located outside the perpendicular from the pivot 31 in the grating width direction. However, since the maximum radius in the natural state of the bending portion 3a is larger than the shortest distance between the pivot 31 and the main body portion 20, the bending portion 3a is forcibly deformed and is guided to the guide pin. For this reason, the locking member 2 is urged upward by lever action with the end plate portion 7c as a fulcrum, so that the locking pin 21 is connected to the upper surface wall of the locking hole 6. The grating 1B is pressed against the L-shaped edge 50 of the receiving frame 5 by the reaction force, and the grating 1B is held in the receiving frame 5 in a locked state.
[0025]
Accordingly, even in the case of the second embodiment, as in the case of the first embodiment, when the grating 1B is placed on the L-shaped edges 50, 50 on both sides of the receiving frame 5 of the drainage groove 4, each locking member 2 is held at the retreat limit position, and after placing, the locking member 2 is slid in the protruding direction, the locking pin 21 is fitted into the locking hole 6, and the rotating piece 3B is pushed down on the receiving frame 5. Since it is strongly locked by the lever action so that it can be pressed down, it cannot be detached, and there is no fear of being pulled out from the locking hole 6 even when subjected to vibration or impact, and the grating 1B jumps up and drains when the vehicle passes. There is no risk of coming off from the groove 4, and rattling is suppressed, so that the noise associated with the running of the vehicle is reduced, and it is difficult to deform and the durability is improved. Further, when the grating 1B is removed by cleaning the drainage groove 4 or the like, the locking member 2 is unlocked by pulling up the flat plate portion 3b of the rotating piece 3B. The grating 1B can be removed very easily.
[0026]
The locking means for the locking member 2 is not limited to the illustrated lock bolt 3A and the rotating piece 3B. For example, both the locking member 2 and its holding portion are provided with holes, and both the holes are in communication. Various methods can be employed, such as inserting and locking a pin when locked, or locking with an engagement key that engages both the locking member 2 and its holding portion. In the embodiment, the locking hole 6 is provided as the fitting portion of the locking member 2 on the receiving frame 5 side. However, the fitting portion may be a structure that allows the locking member 2 to be fitted, even if it is not a hole. Moreover, although the case where the receiving frame 5 which covers the whole surface was provided in the road crossing type drainage groove 4 in the said Example was shown, the attachment apparatus of this invention is various things, such as a side ditch of a road, a water collecting trough, etc. It can be applied to a recess through which water flows, and the receiving frame can be of various forms including an angle member that covers only the opening edge of the recess. Further, the present invention can be variously modified in design other than the embodiment with respect to the detailed configuration such as the shape of the locking member 2 and its moving guide structure, the structure of the holding portion of the locking member 2, and the grating structure of the grating.
[0027]
【The invention's effect】
According to the grating mounting device of the first aspect of the present invention, the grating can be securely fixed to the receiving frame of the recess such as the drainage groove in a stable state free of rattling by the locking member, so The generation of noise when stepping over is reduced, the grating is less likely to be deformed and durability is improved, and the locking member can be locked in engagement with the receiving frame, so that when the vehicle passes The grating can be completely prevented from jumping up and coming off, and the part that fixes the grating to the frame is structurally simple and easy to operate, so that the grating can be easily attached and detached when cleaning the recess. In addition, the manufacturing cost of the receiving frame can be kept low. In addition, the grating mounting apparatus has an advantage that the switching between the locked state and the unlocked state of the latching member of the grating can be performed very simply by rotating the rotating piece.
[0030]
According to the invention of claim 2 , since the locking member is fixed to the fitting portion of the receiving frame by the lever action by the locking means with a supporting point for supporting the locking member as a fulcrum, it is extremely strong. The locking member can be fixed to the fitting portion, and the grating can be strongly held by the receiving frame without being detached or rattling against an external force such as an impact when the vehicle passes.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a grating mounting operation in a first embodiment of a grating mounting apparatus according to the present invention.
FIG. 2 is a longitudinal side view of a main part showing a grating mounting state in the first embodiment.
FIG. 3 is a partially broken front view showing the main part of the grating used in the first embodiment.
FIG. 4 is a perspective view of a holding frame which is a main part of the present invention.
5 is a cross-sectional view of the Ea line in FIG. 3;
FIG. 6 is a longitudinal side view showing a main part of the grating used in the second embodiment of the mounting apparatus for the grating according to the present invention.
[Explanation of symbols]
1A, 1B Grating 2 Locking member 3A Lock bolt (locking means)
3B Rotating piece (locking means)
31 Axis (Pivot)
4 Drainage (recess)
5 Receiving frame 6 Locking hole (insertion part)
7 Holding frame 7c End plate (fulcrum)

Claims (2)

On both sides of the grating, there are provided a locking member that can be moved to the outside of the side and a locking means for fixing the locking member so that the locking member cannot move, and a receiving frame in a recess into which the grating is fitted, Having a fitting portion of the locking member;
Is inserted into the fitting portion of the receiving frame the locking member of grating is fitted on the receiving frame of said recess, the mounting device of the grating formed by being configured to secure the locking member in said locking means The lock means is pivotable about a pivoting portion so as to be displaceable between a lock position where the lock member elastically contacts the peripheral surface of the locking member by a spring force and a non-lock position which does not elastically contact the peripheral surface. Grating mounting device consisting of one piece .   2. The grating mounting device according to claim 1, wherein the locking member is fixed to the fitting portion of the receiving frame by a lever action by a pressing force of the locking means around a fulcrum supporting the member.

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