JP2013217064A - Grating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a jumping-up preventive grating of which the installation is simplified, thereby reducing labor and time for workers.SOLUTION: On a bottom face side of a connecting member 7 of a receiving frame 4 which receives a grating body, a jumping-up preventive member 8 and a stopper 17 are provided side by side. The jumping-up preventive member 8 includes a rotary operation bolt 18 which is rotated horizontally around a rotation center part 10 including a female screw 9, and the rotary operation bolt 18 is threaded to a female screw 9 while penetrating the connecting member 7 downwards from the upper side thereof. The jumping-up preventive member 8 is mounted to be freely rotatable around the rotation center part 10 between a retracted attitude where the jumping-up preventive member 8 is settled not to protrude outwardly from the connecting member 7 and a protruding attitude where the jumping-up preventive member 8 protrudes from the connecting member 7 by regulating the rotation by putting a locked part 13 against a stopper 17 and a water conduit cover part engaging body 12 comes into contact with and is engaged to an end portion bottom face 11a of a water conduit cover part 11.

Description

  The present invention relates to a jumping prevention grating configured to prevent the grating from jumping up by a traveling vehicle.

  Conventionally, as this kind of jumping prevention grating, for example, a grating provided in a drainage groove such as a side groove or a transverse groove, the grating main body, a receiving frame for receiving the grating main body, and the grating main body receiving the grating. A grating main body fixing means for detachably attaching to and fixing to the frame, wherein the receiving frame has a receiving frame main body and an extension portion for preventing splashing, and the receiving frame main body has left and right sides of the drainage groove. The left and right raising members mounted on each of the lid hanging portions, and front and rear connecting members for connecting the raising members on the front and rear end sides, respectively, and the extending portion for preventing the splashing is the drainage channel of the drainage groove Extending from each of the front and rear connecting members so as to enter the lower surface side of the end portion of the water channel covering portion such as a groove cover placed on the top wall and the drainage groove, At least one of the mounting portions is provided on an extending piece separate from the receiving frame main body, and the receiving frame has an extending piece fixing means for detachably attaching and fixing the extending piece to the connecting member. The extending piece fixing means includes an extending piece fixing bolt and an extending piece fixing female screw that are screwed together, and a set of the extending piece fixing bolt and the extending piece fixing female screw is: There is one in which two sets are provided for one extending piece (see, for example, Patent Document 1).

Japanese Patent No. 4454579

However, in the grating having the above structure, two sets of the extension piece fixing bolt and the extension piece fixing female screw are provided for one extension piece, so that the extension piece fixing bolt is screwed. Although it is intended to prevent the extension pieces from rotating together, it is necessary to screw in two extension piece fixing bolts when attaching and fixing one extension piece to the connecting member. There is a problem that it takes much time and labor to fix the piece.
In addition, when bolting each of the extended pieces extending from the front and rear connecting members facing each other, one extended piece may be temporarily assembled before installing the water channel covering portion. The other extension piece is fixed by screwing two extension piece fixing bolts after installation of the water channel cover so that the extension piece does not rotate together. Bolt fixing must be installed while supporting the extended piece. Therefore, there is a problem that the installation work of the grating requires a lot of labor and time and cannot be installed easily and efficiently.

  The present invention has been made to solve such a problem, and the object of the present invention is to receive each of the front and rear spring-up prevention members from the connecting member of the receiving frame to the outside before the installation of the water channel covering portion. It can be temporarily assembled in a state where it does not protrude, and after installation of the water channel cover part, it does not look into the water channel cover part as in the prior art, and one piece from the upper side of the connecting member that is easy to work Grating that allows easy and quick and efficient installation of the grating by simply positioning the fixing member in a protruding position that protrudes outward from the connecting member and without co-rotation by simple operation by simply tightening the rotary operation bolt. It is to provide.

The grating of the present invention will be described with reference to the reference numerals attached to FIGS. 1 to 10 for easy understanding of the contents of the invention. 2) a grating body (3), a receiving frame (4) for receiving the grating body (3), and a grating body fixing means (5) for fixing and attaching the grating body (3) to the frame (4). The receiving frame (4) has a receiving frame main body (4a) and a splash-up preventing member (8), and the receiving frame main body (4a) has left and right cover portions ( 1a) The left and right raising members (6) and (6) to be placed on each of the 1a and (1a), and the front and rear connecting members (7) connected at the respective front and rear ends of the raising members (6) are provided. The prevention member (8) is attached to each lower surface side of the front and rear connecting members (7). The grating (2) being eclipsed those having features that are configured as follows.
That is, the splash-preventing member (8) is provided at the rotation center portion (10) having the female screw (9) and the distal end side from the rotation center portion (10), and covers the drainage channel of the drainage groove (1). A water channel cover engaging body (12) capable of abutting engagement with the lower surface (11a) of the end of the water channel cover (11) such as a groove cover placed on the wall or the drainage groove (1), and a rotation center portion (10) It has the to-be-latched part (13) provided in the back side from. The bounce prevention member (8) includes a rotation operation bolt (18) for horizontally rotating the bounce prevention member (8) around the rotation center portion (10), and the rotation operation bolt (18) is a connecting member (7). Is threaded into the female screw (9) through the upper side from the lower side. A stopper (17) is provided on the lower surface side of the connecting member (7) side by side with the spring-up preventing member (8). The spring-up preventing member (8) is a rotation-restricted connecting member that is retracted in a state of not protruding outward from the connecting member (7) and the locked portion (13) is applied to the stopper (17). (7) projecting from (7) and freely rotating around the rotation center (10) over the projecting posture in which the water channel cover engaging body (12) comes into contact with and engages with the lower surface (11a) of the end of the water channel cover (11). Is attached.

  According to the construction of the grating, before the water channel cover (11) is installed, the splash prevention member (8) can be temporarily assembled to the connecting member (7) so as not to protrude outward from the connecting member (7). it can. Then, after installing the water channel covering part (11), one rotation operation bolt (from the upper side of the connecting member (7) which is easy to work without having to look into the water channel covering part as in the prior art. 18) By simply rotating the pivoting prevention member (8) horizontally around the rotation center portion (10) until the locked portion (13) comes into contact with the stopper (17) by a simple operation by simply tightening 18), both can be easily and quickly shared. Without turning, the water channel cover engaging body (12) protrudes outward from the connecting member (7) and can be brought into contact engagement with the lower end surface (11a) of the water channel cover (11). In this way, the water channel cover engaging body (12) is abutted and engaged with the lower surface (11a) of the end of the water channel cover (11), so that when the vehicle travels on the grating (2), the grating ( 2) can be prevented from jumping up, and the rattling noise generated by the grating (2) can be reliably prevented.

As one preferred embodiment, the grating (2) according to the present invention is such that the water channel cover engaging body (12) is in linear contact or point contact with the lower end surface (11a) of the water channel cover (11). The structure of forming can be employ | adopted. According to this configuration, the lower end surface (11a) of the water channel cover (11) is not damaged by the water channel cover engaging body (12).
In addition, a relief recess (20) is formed in a portion of the water channel cover engaging body (12) facing the corner (11b) on the lower surface side of the water channel cover (11) so as not to interfere with the corner (11b). It is possible to adopt a configuration that does. According to this configuration, it is possible to prevent the corner portion (11b) on the lower surface side of the water channel covering portion (11) from being lost by the water channel covering portion engaging body (12) and causing a decrease in strength.

  According to the present invention, the splash preventing member can be temporarily assembled so as not to protrude outward from the connecting member before the water channel cover is installed, and only one rotation operation bolt is tightened after the water channel cover is installed. The jumping prevention member can be positioned and fixed in a non-rotating manner by a stopper by a simple operation, and there is no co-rotation. Therefore, there is an advantage that the installation work of the grating can be performed easily, quickly and efficiently.

It is a top view of grating showing an example embodiment of the present invention. It is the sectional view on the AA line in FIG. It is the BB sectional view taken on the line in FIG. It is an enlarged view of the C section in FIG. It is the DD sectional view taken on the line in FIG. (A) is a top view of the receiving frame of the same grating, (b) is the EE sectional view taken on the line in Fig.6 (a). It is the FF sectional view taken on the line in Fig.6 (a). (A) is a top view of the jumping prevention member of the grating, (b) is a front view of the jumping prevention member, and (c) is a side view of the jumping prevention member. (A)-(c) is operation | movement explanatory drawing of the same splash prevention member. It is a front view of the splash prevention member of other example embodiments.

  Preferred embodiments of the present invention will be described with reference to the drawings.

  1 to 9 show an embodiment of a grating according to the present invention. In FIG. 1 to FIG. 3, reference numeral 1 denotes a concrete groove block that becomes a drainage groove such as a side groove or a transverse groove, and 2 denotes a grating provided in an upper opening of the groove block 1. The grating 2 includes a grating main body 3, a receiving frame 4 that receives the grating main body 3, and a grating main body fixing means 5 that removably attaches and fixes the grating main body 3 to the frame 4. And the receiving frame 4 has the receiving frame main body 4a and the spring-up prevention member 8. As shown in FIG.

The receiving frame body 4a includes raised members 6 and 6 placed on the left and right lid portions 1a and 1a of the groove block 1, and front and rear connecting members 7 that connect the raised members 6 and 6 at the front and rear ends. , 7. The spring-up preventing member 8 is attached to each lower surface side of the front and rear connecting members 7.
The grating main body fixing means 5 includes a main body fixing bolt 5a and a main body fixing female screw 5b which are screwed together.

  Specifically, as shown in FIGS. 1 and 2, the grating main body 3 is formed by assembling main bars 3a and 3a, auxiliary bars 3b and 3b, and end bars 3c and 3c in a lattice shape. And the attachment plate 3d is provided in the four corners of the grating main body 3, and the attachment hole 3e is provided in the attachment plate 3d.

  As shown in FIGS. 4, 6, 7, and 8, in the receiving frame 4, both the front and rear spring-up preventing members 8 and 8 are provided separately from the receiving frame body 4 a. Here, the raising member 6 in the receiving frame main body 4a is formed in a pipe shape. The upper wall 6a of the raising member 6 is provided with a main body fixing female screw 5b, and a main body fixing bolt 5a for mounting and fixing the grating main body 3 is screwed into the main body fixing female screw 5b (see FIG. 3). ). Specifically, the main body fixing bolt 5a is screwed into the main body fixing female screw 5b (see FIG. 2) through an attachment hole 3e (see FIG. 1) provided in the grating main body 3. More specifically, the main body fixing female screw 5b is formed of a nut fixed to the back surface of the upper wall 6a of the raising member 6 by welding or the like. The upper wall 6a has a through hole 6b (see FIG. 6A) communicating with the screw hole (see FIG. 6B) of the main body fixing female screw 5b. Accordingly, the main body fixing bolt 5a is screwed into the main body fixing female screw 5b through the mounting hole 3e of the grating main body 3 and further through the through hole 6b of the upper wall 6a. Further, as shown in FIG. 3, the raising member 6 is provided with displacement preventing pieces 6 c and 6 c for preventing displacement with respect to the groove block 1 by facing the inner surface of the side wall 1 d of the groove block 1. .

  As shown in FIGS. 6 (a) and 6 (b), the front and rear connecting members 7 and 7 for connecting the front ends and rear ends of the left and right raising members 6 and 6 are made of an angle member having an L-shaped cross section. A through hole 19 is formed in the bottom 7 a of each connecting member 7. The raising members 6 and 6 and the connecting members 7 and 7 are joined by, for example, welding, and thus the receiving frame main body 4a including these raising members 6 and 6 and the connecting members 7 and 7 is integrated.

As shown in FIG. 4 and FIGS. 8A, 8B, and 8C, the spring-up preventing member 8 is provided with a rotation center portion 10 having a female screw 9 and a distal end side from the rotation center portion 10, and is provided with a groove block. A water channel cover that can contact and engage with the lower surface 11a of the end portion of the water channel cover portion 11 such as a groove lid (not shown) such as a concrete lid placed on the top wall 1c or the groove block 1 covering the drainage channel 1b. It has the part engagement body 12 and the to-be-latched part 13 provided in the back side from the rotation center part 10. FIG.
If the specific example of manufacture of the splash prevention member 8 is given, as shown to Fig.8 (a)-(c), the rotation center part 10 of the splash prevention member 8 will be formed with one high nut 14, and water channel covering will be carried out. The part engagement body 12 is formed by welding and fixing two round steels (round bar steel materials having a circular cross section) 15a, 15b which are cut into long and short shapes in parallel in a vertically overlapping manner, and the lower round steel 15a on the lower side thereof. One end of each is welded and fixed to one side of the high nut 14. The locked portion 13 is composed of a flat bar 16 and is welded and fixed to the other side of the high nut 14.

  As shown in FIGS. 6 to 7 and 9, a stopper 17 for restricting the rotation of the splash prevention member 8 is welded to the lower surface side of the connecting member 7 so as to line up with the splash prevention member 8 in a predetermined arrangement state. Fixed with etc.

On the lower surface side of the connecting member 7, the splash prevention member 8 retracts onto the connecting member 7 so as not to protrude outward from the connecting member 7 (FIG. 9A), and is locked. Projection posture (FIG. 7) in which rotation is restricted by applying the portion 13 to the stopper 17 so as to project outward from the connecting member 7 and to engage and engage the water channel cover engaging body 12 with the end lower surface 11a of the water channel cover 11 9 (c)) and can be horizontally rotated around the rotation center 10.
The spring-up preventing member 8 includes a rotation operation bolt 18 made of a hexagon socket head cap screw that horizontally rotates the spring-up preventing member 8 around the rotation center portion 10. The rotation operation bolt 18 is passed through a through hole 19 (see FIGS. 6A and 7) provided in the connection member 7 from the upper side of the connection member 7 and protrudes downward from the connection member 7. Screwed into the female screw 9 of the portion 10.

  As shown in FIG. 5, the water channel cover engaging body 12 is in contact with the end lower surface 11 a of the water channel cover 11 so that the water channel cover engaging body 12 does not damage the end lower surface 11 a of the water channel cover 11. The contact portion is formed in a columnar shape like the round steel 15b illustrated in FIG. 5 so as to be in linear contact with the end lower surface 11a of the water channel covering portion 11.

  In addition, the water channel covering portion 11 of the water channel covering portion engagement body 12 is not damaged by the corner portion 11b (see FIG. 4) on the lower surface side of the water channel covering portion 11 due to the water channel covering portion engaging body 12 being lost. As shown in FIG. 4, the upper round steel 15b is made shorter than the lower round steel 15a so as not to interfere with the corner 11b as shown in FIG. A recess 20 is formed.

  Next, a construction procedure for installing the grating 2 having the above configuration in the groove block 1 will be described. First, the receiving frame 4 is arranged in the groove block 1. In order to arrange the receiving frame 4 in the groove block 1, first, the receiving frame main body 4 a is placed so that the raising members 6, 6 are placed on the left and right lid portions 1 a, 1 a of the groove block 1. Place in block 1. At this time, both the front and rear spring-up preventing members 8 and 8 can be temporarily assembled in a retracted posture that does not protrude outwardly from each connecting member 7, so that the receiving frame body 4a is lowered straight. The receiving frame body 4a can be arranged in the groove block 1. Thus, after the receiving frame main body 4a is arranged in the groove block 1, the water channel until the locked portion 13 of the splash preventing member 8 hits the stopper 17 by tightening the rotating operation bolt 18 from the upper side of the connecting member 7 which is easy to work. The cover engaging body 12 is horizontally rotated around the rotation center 10 to project outward from the connecting member 7, and the water channel cover engaging body 12 is brought into contact engagement with the lower end surface 11 a of the water channel cover 11. be able to. As a result, the jumping of the grating 2 by the traveling vehicle can be prevented (see FIGS. 4, 5, and 9C). After arranging the receiving frame 4 in the groove block 1 in this way, the grating main body 3 is attached and fixed to the receiving frame 4 using the grating main body fixing means 5 (bolt 5a and female screw 5b) (see FIGS. 1 to 3). ).

  Further, in the grating main body fixing means 5, as shown in FIG. 7, a main body fixing female screw 5b is provided on the upper wall 6a of the raising member 6 formed in a pipe shape. Therefore, as shown in FIG. 3, the distal end portion of the main body fixing bolt 5 a screwed into the main body fixing female screw 5 b can be accommodated in the inner space 6 d of the raising member 6. In the illustrated embodiment, the main body fixing female screw 5 b is a nut, and this nut is also accommodated in the inner space 6 d of the raising member 6.

  The present invention is not limited to the above-described embodiment, and various other modifications are possible. For example, the spring-up preventing member 8 is not limited to one in which two round steels 15a and 15b are welded up and down and is welded to the high nut 14, but the center of rotation 10 and the water channel are covered by forging or shaving from a metal block. The part engaging body 12 and the locked part 13 may be integrally formed, or may be a cast product or a resin molded product. Moreover, instead of forming the water channel cover engaging body 12 so as to be in linear contact with the end lower surface 11a of the water channel cover 11, the water channel cover engaging body 12 is placed on the end lower surface 11a of the water channel cover 11 as shown in FIG. It is also possible to form a protrusion 12a having a circular arc shape in the water channel cover engaging body 12 so as to make point contact.

  Moreover, in the receiving frame main body 4a, the raising member 6 and the connecting member 7 are made of different members, and even if they are not joined by welding, for example, the raising member 6 and the connecting member 7 are made of an integrated member. May be bent so that the raising member 6 and the connecting member 7 may be integrally formed.

  Even if one grating main body 3 is not attached to the receiving frame 4, a plurality of grating main bodies 3 may be attached in a line.

  The female screw 9 of the spring-up preventing member 8 does not need to be formed from the high nut 14 but may be formed from a screw hole provided directly in the rotation center portion 10. Similarly, the main body fixing female screw 5b in the grating main body fixing means 5 may be formed of a screw hole provided directly in the upper wall 6a of the raising member 6 without being formed of a nut.

  The grating main body fixing means 5 may not be constituted by the bolt 5a and the female screw 5b, but may be constituted by another fixing tool or a fixing structure.

  The groove block 1 may be a groove block such as a variable gradient type, a culvert type, or a U-shaped side groove block or a transverse groove block. Furthermore, the drainage groove may not be formed from the groove block 1 but may be cast on site.

1 Groove block (drainage groove)
DESCRIPTION OF SYMBOLS 1a Cover part 2 Grating 3 Grating main body 4 Receiving frame 4a Receiving frame main body 5 Grating main body fixing means 6 Raising member 7 Connecting member 8 Jumping prevention member 9 Female screw 10 Rotation center part 11 Water channel covering part 11a End lower surface 11b Corner part 12 Water channel Cover part engaging body 13 Locked part 17 Stopper 18 Rotating operation bolt 20 Relief recess

Claims (3)

A grating provided in the drainage groove, comprising: a grating main body, a receiving frame for receiving the grating main body, and a grating main body fixing means for fixing the grating main body to the receiving frame, the receiving frame being a receiving frame A main body and a splash prevention member, and the receiving frame main body includes left and right raising members placed on the left and right lid hanging portions of the drainage groove, and front and rear connecting the raising members on the front and rear ends. In the grating that is provided on each lower surface side of the front and rear connection members,
The spring-up preventing member includes a rotation center portion having a female screw, and a top wall that covers the drainage channel of the drainage groove and an end portion of the waterway cover portion that is provided on the distal end side of the rotation center portion and is placed on the drainage groove. A water channel cover engaging body that can contact and engage with the lower surface, and a locked portion provided on the rear side of the rotation center portion,
The bounce prevention member includes a rotation operation bolt that horizontally rotates the bounce prevention member around a rotation center portion, and the rotation operation bolt penetrates the connecting member downward from above to be screwed into the female screw. And
A stopper is provided on the lower surface side of the connecting member side by side with the spring-up preventing member,
The splash-preventing member is retracted so as not to protrude outward from the connecting member, and is restricted from rotating by applying the locked portion to the stopper and protrudes from the connecting member and the water channel covering portion. A grating, wherein the engaging body is rotatably mounted around the rotation center portion over a projecting posture in which the engaging body comes into contact with and engages with the lower surface of the end portion of the water channel covering portion.   The grating according to claim 1, wherein the water channel cover engaging body is formed in a linear contact or a point contact with a lower surface of an end of the water channel cover.   3. The grating according to claim 1, wherein an escape recess is formed in a portion of the water channel covering portion engaging body facing a corner portion on a lower surface side of the water channel covering portion so as not to interfere with the corner portion.

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