JPH08120760A - Structure for connecting grating - Google Patents

Abstract

PURPOSE: To prevent a connection from rusting by enabling adjacent gratings to be easily connected together, and allowing rainwater, etc., to easily escape from the connection. CONSTITUTION: A plate portion 8, in which is formed a hole 7 for passing a bolt between adjacent main bars 4, 4, is mounted on a bottom in a position deviating from the support portion 3 of a drainage ditch 2, at a longitudinal end of a grating 1. The longitudinal ends of the adjoining gratings 1, 1 are brought close each other, and the longitudinal ends of each grating 1 are placed on horizontal plate portions 10 on both sides of at least the cross direction of a connecting member 9. The hole 7 in the plate portion 8 of each grating 1 is made to fit, from above, with a hole 13 formed in the plate portion 10 of the connecting member 9 and having an internally threaded surface. Under these conditions, a clamping bolt 14 is passed form the hole 7 in the plate portion 8 of the upper grating 1 and threaded into the hole 13, so that the stacked plate portions 8, 10 are connected together.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a grating connecting structure for connecting gratings provided as a lid for covering an upper end of a drain groove inside or outside a building.

[0002]

2. Description of the Related Art Conventionally, a grating which is laid as a lid for covering the upper end of the drain groove depends on the length of the drain groove, but usually a plurality of grooves are used for one drain groove, and each grating is used. It is known that the above is connected to the receiving portion of the drainage groove by bolts and nuts. Specifically, a nut is embedded in a predetermined position of the receiving portion of the drainage groove, the bolt insertion hole formed at the end of the grating is matched with the nut, and the bolt is screwed into the nut from above the grating. Has installed grating.

In this case, the nut must be embedded at a predetermined position of the receiving portion of the drainage groove, and if the embedding position of the nut is shifted, a gap is created between adjacent gratings, or adjacent gratings are vertically overlapped with each other. There was a problem that the embedded position of the nut had to be corrected. Also, when the grating is installed, the bolt is located on the receiving part of the drainage groove, so the connection part of the bolt and nut remains in contact with rainwater for a long time, and the connection part of the bolt and nut rusts in a short time. There was a problem of sticking.

[0004]

SUMMARY OF THE INVENTION The present invention is intended to solve such a problem, and a nut, such as a case where a grating provided at an upper end of a drain is fixed to a receiving portion of the drain with a bolt from above. The purpose is to easily connect adjacent gratings without problems such as correcting the buried position of the, and to make it easier for rainwater to escape from the connecting part and to prevent rusting of the connecting part. is there.

[0005]

In order to solve this problem, the present invention provides a bolt for inserting a bolt between adjacent main bars at the bottom of the grating at a position away from the receiving portion of the drain groove at the end in the longitudinal direction. Of the gratings are attached, and the lengthwise ends of the adjacent gratings are brought close to each other so that the lengthwise ends of the gratings are at least on the horizontal plate portions on both sides in the width direction of the connecting member. Place the holes of the plate portion of each grating to match the holes formed in the plate portion of the connecting member from above, and tighten in this state from the holes of the grating plate portion located on the upper side. The gist of the present invention is that the bolts are screwed into the female screw portion on the lower side of the grating plate portion located on the upper side, and the plate portions that overlap each other are connected.

[0006]

As described above, the adjacent gratings are connected to each other by bolts at the positions separated from the receiving portion of the drainage groove through the connecting member, and the grating provided at the upper end of the drainage groove is connected to the receiving portion of the drainage groove. There is no problem of correcting the embedded position of the nut like when fixing with a bolt from above, and it is possible to easily connect adjacent gratings, and it is also possible to make rainwater etc. escape from the connection part easily. It is possible to suppress rusting of the connecting part.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. First, the first embodiment shown in FIGS. 1 to 3 will be described. 1 is placed on both sides along the length direction on a receiving portion 3 formed near the upper end of the inner surface along the length direction of the drainage groove 2. Grating, made of metal such as stainless steel and iron. More specifically, in the grating 1, a large number of main bars 4 arranged in parallel at equal intervals are connected by three cross bars 5 which are orthogonal to the main bar 4 and parallel to each other. The frame member 6 is attached to both sides along the line.

Although depending on the length of the drain groove 2, a plurality of gratings 1 are often used for one drain groove 2, and adjacent gratings 1 and 1 are connected to each other.

Due to the connection between the gratings 1 and 1, the gratings 1 are provided at both ends in the longitudinal direction of the grating 1 at the bottoms near the both ends in the width direction of the gratings 1 and 1 which are separated from the receiving portions 3 of the drainage grooves 2. A plate portion 8 having a hole portion 7 for inserting a bolt is fixed between the main bar 4 located at the end portion in the longitudinal direction of 1 and the main bar 4 adjacent to the main bar 4 by welding or the like. . A connecting member 9 made of metal or the like is used to connect the gratings 1 and 1.

The connecting member 9 is located between the main bars 4 and 4 located at the ends of the adjacent gratings 1 and 1.
A horizontal plate portion 10 at the lower end so as to have an inverted T shape in the side surface shape, and a plate portion 11 standing upright in the widthwise center of the plate portion 10.
And the upward engaging pieces 12 provided at both ends of the plate portion 10 in the width direction, and the horizontal plate portions 10 on both sides of the plate portion 11 have gratings adjacent to the plate portion 10. 1 has an internal thread so that when the main bar 4 located at the end in the lengthwise direction and the main bar 4 adjacent to the main bar 4 are placed, the inner surface is aligned with the hole 7 for bolt insertion of the plate 8. The hole portion 13 is formed, and the plate portion 10 and the engaging piece 12 are not present in the portion of the grating 1 which is placed on the receiving portion 3 of the drainage groove 2.

When connecting the adjacent gratings 1, 1 with the connecting member 9 as described above, both ends of the plate portion 11 of the connecting member 9 in the length direction are placed on the receiving portion 3 of the drainage groove 2, In this state, the end portions of the gratings 1 and 1 adjacent to each other in the length direction are brought close to each other, and the horizontal plate portions on both sides of the plate portion 11 are arranged.
The main bar 4 located at the end of each grating 1 in the longitudinal direction and the main bar 4 adjacent to the main bar 4 are placed on the plate 10 between the plate portion 11 and the engaging piece 12 and the hole 7 is formed.
And the hole 13 are aligned with each other, the hole below the upper hole 7
The bolts 14 for tightening are screwed onto the screw 13, so that the overlapping plate portions 8 and 10, and thus the adjacent gratings 1 and 1 are connected to each other. The crossbar 5 is located at a position displaced from above the hole 7 of the plate portion 10 so as not to interfere with the tightening of the bolt 14.

Next, the second embodiment shown in FIGS. 4 and 5 will be described. In the second embodiment, an appropriate space is provided in the width direction of the connecting member 9 at the center of the connecting member 9 in the width direction. Plate parts 11, 11 parallel to each other are erected, and the upper ends of the plate parts 11, 11 are connected by a horizontal plate part 15, and the plate parts 11, 11 and the plate parts are provided between adjacent gratings 1, 1. 15 is arranged so that an appropriate space is provided between the adjacent gratings 1 and 1. The other structure is the same as that of the first embodiment.

By the way, in the second embodiment, the horizontal plate portion 15 connecting the upper ends of the plate portions 11 and 11 and the lower end of the plate portions 11 and 11 located below the horizontal plate portion 15 are connected. A plurality of holes are formed in the part of the horizontal plate part 10 that connects the
It is also possible to drop rainwater, etc., that has fallen from above 15 into the drainage channel 2. In addition, in the first and second embodiments, a plurality of horizontal plate portions 10 on both sides of the plate portion 11 are also provided. It is also possible to form a hole so that rainwater and the like dropped from above the horizontal plate 10 is dropped into the drainage groove 2. Further, in the second embodiment, it is possible to eliminate the portion of the horizontal plate portion 10 located below the horizontal plate portion 15 and connecting the lower ends of the plate portions 11 and 11.

In each of the embodiments described above, the bolt 14 is screwed into the hole 13 of the horizontal plate portion 10. However, the hole portions 7 and 13 of the plate portion 8 and the plate portion 10 are long axes. Is a long hole facing the longitudinal direction of the grating 1, and the hole of the plate portion 10 located on the lower side
A nut that is movably supported in the longitudinal direction of the grating 1 is provided on the lower side of the grating 1, and the bolt 14 is inserted into the hole portions 7 and 13 and screwed into the nut so that the adjacent gratings 1 and 1 are joined together. It is also possible to connect. According to this configuration, it is possible to deal with expansion and contraction of the grating 1 due to changes in temperature.

[0015]

As described above, according to the present invention, adjoining gratings are connected to each other by bolts at positions separated from the receiving portion of the drainage groove, and the gratings provided at the upper end of the drainage groove. There is no problem of correcting the embedded position of the nut, such as when fixing the bolt to the receiving part of the drainage groove from above, and it is easy to connect adjacent gratings, and rainwater etc. from the connecting part. It is possible to make it easier to escape, and it is possible to prevent rusting of the connecting part.

[Brief description of drawings]

FIG. 1 is a perspective view showing a state before connecting gratings in a first embodiment of the present invention.

FIG. 2 is a perspective view showing a connected state of the gratings.

FIG. 3 is an enlarged sectional view of the same.

FIG. 4 is a perspective view showing a state before the gratings are connected to each other in the second embodiment of the present invention.

FIG. 5 is an enlarged cross-sectional view showing a connected state of the gratings.

[Explanation of symbols]

 1 grating 2 drain groove 3 receiving part 4 main bar 7 hole 8 plate 9 connecting member 10, 11 plate 12 engaging piece 13 hole 14 bolt 15 plate

Claims (1)

[Claims] 1. A plate part in which a hole for inserting a bolt is formed between adjacent main bars is attached to a bottom part of the grating in the longitudinal direction at a position separated from the receiving part of the drain groove, and the adjacent gratings are attached. The lengthwise ends of each grating are placed on the horizontal plate portions at least on both sides in the width direction of the connecting member with the lengthwise end portions of the connecting members being close to each other, and the hole portions of the plate portions of each grating are connected. Align with the hole formed in the plate part of the member from above, and in such a state, through the bolt for tightening through the hole of the grating plate located on the upper side to the female screw part on the lower side of the grating plate located on the upper side. A grating connecting structure characterized in that the plate portions that are screwed together and overlap each other are connected to each other.