JP4598618B2 - Guard fence joint structure and fixed structure - Google Patents

Description

  The present invention relates to a joint joint structure of a support column and a beam in a protective fence and a fixing structure for fixing the support column.

  2. Description of the Related Art Conventionally, a joint structure in a guard fence has a function of preventing a bolt or nut from rotating. (1) A rectangular concave portion is provided in a bracket on a support column, and a rectangular nut is fitted into the concave portion. There is a known structure designed to prevent rotation. (For example, see Japanese Patent Application Laid-Open No. 60-50219).

  There is also known a structure in which (2) a recess is provided at an interval on the beam side, and a nut is fixed to the recess by welding (for example, see Japanese Patent Laid-Open No. 63-38265). ).

  (3) As shown in FIG. 16, when the beam 3 having the inner sleeve 29 is installed on the bracket 2 of the support column 1, the bolt 4 is provided between the bolt head 5 and the flat washer 6 as a loosening prevention. In addition, when the bolt 4 is tightened with a spring washer 7 interposed therebetween, the spring washer 7 is tightened until the stepped portion of the main body of the spring washer 7 disappears (until the spring action ceases), thereby achieving an anti-rotation function. There is also known a form having a detent function that can be seen from the appearance that there is no shift (step) in the action part.

  In addition, as a fastening structure between the members, (4) a locking hook is provided on the washer and a bent portion is provided so that the locking hook is locked to the side surface of the fastening object, and the bent portion is bent to the bolt head side. In addition, a fastening structure between members using a non-rotating washer that provides a non-rotating function by the bent portion is also known (see, for example, JP-A-2002-39141).

In addition, as a fixing structure of a support post in a protective fence, (5) In the case of a fixing structure in which a base plate in the support post is fixed to an internal thread metal fitting or an anchor bolt that is embedded and fixed in a concrete foundation in the vicinity of a road body, When a bolt or nut is tightened by inserting a spring washer between the bolt head or nut and a flat washer, tightening until the stepped portion of the spring washer body disappears (until the spring action disappears) There is also known a form having a detent function that fulfills the detent function and is apparent from the outside that there is no shift (step) in the axial spring acting portion.
Japanese Utility Model Publication No. 60-50219 Japanese Utility Model Publication No. 63-38265 JP 2002-39141 A

In the conventional cases (1) and (2), since special processing is required on the bracket or beam side, there is a problem of increasing the cost, and in the cases (3) and (5) If it is tightened until the spring action disappears, it can be seen from the outside that there is no axial spring displacement (step), so it can be determined that the anti-rotation function is working, A form with a detent function that can be identified is required. In the case of (4), it can be used in a form in which the upper surface and side surface of the member are exposed at right angles, but the joint structure of the beam type protective fence or the flat base plate part of the protective fence is formed as a substantially cylindrical member. There is a problem that it cannot be applied to the fixed structure.
An object of the present invention is to provide a protective fence joint structure and a fixing structure that can advantageously solve the above-described problems.

In order to solve the above-mentioned problem advantageously, in the guard fence joint structure of the first invention, the guard fence joint structure for joining the column and the beam,
The brace and beam joints consist of a plate washer, a washer with tongue, a rotation washer and a bolt,
The plate washer is formed in such a size that when it rotates, it hits a support or a member fixed to the support and cannot rotate.
The washer with a tongue includes at least one bent portion that contacts the side of the plate washer and at least one tongue that can be bent at the other end, and the at least one tongue is a bolt in a bolt axial direction. It is folded so that it is located on the head side, and a stopper with a tongue piece is formed,
The rotation stopper washer includes a bent piece that engages with a bolt head and restricts its rotation, and includes an arm that can be engaged with the stopper.

In the protective fence joint structure of the second invention,
It is a protective fence joint structure that joins a column and a beam,
A support, an inner sleeve, and a beam fitted to the outside of the inner sleeve,
A bracket is fixed to the upper end of the column, and the beam with the inner sleeve inserted therein is placed on the bracket.
Joining at least one joining part of joining part A which joins the bracket of a support, a beam, and an inner sleeve, and joining part B that joins a beam and an inner sleeve with a joining metal fitting,
The joint fitting is composed of a plate-like washer arranged on either the outer surface of the bracket or the outer surface of the beam, a washer with a tongue piece, a rotation washer and a bolt,
When the plate washer rotates, the plate washer arranged on the outer surface of the beam is engaged with the bracket, and the plate washer arranged on the outer surface of the bracket is engaged with the web of the column so that it cannot rotate.
The washer with a tongue includes at least one bent portion that contacts the side of the plate washer and at least one tongue that can be bent at the other end, and the at least one tongue is a bolt in a bolt axial direction. It is folded so that it is located on the head side, and a stopper with a tongue piece is formed,
The rotation stopper washer includes a bent piece that engages with a bolt head and restricts its rotation, and includes an arm that can be engaged with the stopper.

Further, in the third invention, in the protective fence joint structure according to the first invention or the second invention, instead of the joint metal fitting comprising a plate washer, a washer with a tongue piece, a rotation washer and a bolt, the joint metal fitting is a plate washer. And a washer with a tongue and a bolt,
A washer with a tongue is arranged on the outer surface of the plate washer,
The tongue-attached washer includes a bent portion that is in contact with the side of the plate washer at one end and a tongue piece that can be bent at the other end.
The tongue piece in the washer with the tongue piece is bent so as to be close to or in contact with the polygon outer surface on the bolt head side.

Further, in the protective fence joint structure of the fourth invention, instead of the joint metal fitting comprising the plate washer of the first invention or the second invention, the washer with the tongue piece, the rotation washer and the bolt, the joint metal fitting is a plate washer. And rotation stopper washer and bolt,
When the plate washer is rotated, it is engaged with the bracket or the web of the support column and cannot be rotated,
The rotation stopper washer has a bent piece for restricting the rotation of the bolt head and a tongue piece at one end, and the tongue piece is bent so as to be close to or abut on the side piece of the plate washer. It becomes.

  According to a fifth invention, in the guard fence joint structure according to the first or second invention, the washer with the tongue is provided with a plurality of foldable tongues at intervals, and at least one tongue is a bolt shaft. The stopper by the tongue piece is formed by being bent so as to be positioned on the bolt head side in the direction.

Further, in the protective fence fixing structure of the sixth invention, in the protective fence fixing structure that is fixed to the anchor bolt embedded and fixed on the foundation of the protective fence with a joining bracket,
The joint fitting is composed of a plate washer, a washer with a tongue piece, a rotation stopper washer, and a nut. When the plate washer rotates, the plate is abutted against a column or a member fixed to the column and cannot be rotated. Formed with
The tongue-attached washer includes at one end a bent portion that contacts the side of the plate washer and at least one tongue piece that can be bent at the other end, and the at least one tongue piece is positioned on the nut side. Is folded to form a stopper with a tongue piece,
The rotation stopper washer includes a bent piece that engages with a nut and restricts its rotation and includes an arm that can be engaged with the stopper.

Further, in the protective fence fixing structure of the seventh invention, in the protective fence fixing structure that is fixed to the female screw metal fitting embedded and fixed to the foundation of the protective fence with a joint metal fitting,
The joint fitting is composed of a plate washer, a washer with a tongue, a rotation washer and a bolt, and when the plate washer is rotated, it hits a support or a member fixed to the support so that it cannot be rotated. Formed with
The washer with a tongue is provided with a bent portion that is in contact with the side of the plate washer at one end and at least one tongue that can be bent at the other end, and the at least one tongue is on the bolt head side. It is folded so as to be positioned to form a stopper with a tongue piece,
The rotation stopper washer includes a bent piece that engages with a bolt head and restricts its rotation prevention, and includes an arm that can be engaged with the stopper.

According to the first invention, the plate-shaped washer is fixed to the column or the column by using the plate-shaped washer, the washer with the tongue, the rotation stopper washer, and the bolt for the column-to-beam bonding bracket. The plate-like washer can be made non-rotatable by being brought into contact with and engaged with the formed member. In addition, the washer with the tongue that comes into contact with the plate washer is not only prevented from rotating by friction, but is also a washer with a tongue having a bent portion in contact with the side piece of the plate washer. Can be prevented from rotating. In addition, the washer with the tongue piece is provided with a tongue piece, and the rotation stopper washer that comes into contact with the washer with the tongue piece is provided with an arm, so that the stopper is provided by bending the tongue piece to the arm side in the bolt axial direction. It can be engaged when the arm side rotates to prevent rotation of the rotation washer, and the rotation of the bolt head that is prevented from rotating by the bent piece in the rotation stop washer is achieved. , Can prevent the bolt from loosening.
In addition, the plate-shaped washer, the arm in the anti-rotation washer, and the stopper in the washer with the tongue piece appear outward from the bolt head side, so that they engage to perform the detent function It can be easily determined whether or not there is a relationship, and after tightening the bolt, the tongue on the washer with the tongue is bent to form a stopper, and these engage to perform a detent function It is possible to easily determine whether or not they are in a positional relationship, and these setting work and management work are facilitated.

According to the second invention, the plate-shaped washer, the washer with the tongue piece, and the rotation are provided at one or both of the joint portion A of the support bracket and the beam and the inner sleeve, or the joint portion B of the beam and the inner sleeve. By using a fitting made of a stop washer and a bolt, the plate washer can be engaged with the bracket or the web of the support column to make the plate washer non-rotatable. In addition, the washer with the tongue that comes into contact with the plate washer is not only prevented from rotating by friction, but is also a washer with a tongue having a bent portion in contact with the side piece of the plate washer. Can be prevented from rotating. In addition, the washer with the tongue piece is provided with a tongue piece, and the rotation stopper washer that comes into contact with the washer with the tongue piece is provided with an arm, so that the stopper is provided by bending the tongue piece to the arm side in the bolt axial direction. It can be engaged when the arm side rotates to prevent rotation of the rotation washer, and the rotation of the bolt head that is prevented from rotating by the bent piece in the rotation stop washer is achieved. , Can prevent the bolt from loosening.
In addition, the plate-shaped washer, the arm in the anti-rotation washer, and the stopper in the washer with the tongue piece appear outward from the bolt head side, so that they engage to perform the detent function It can be easily determined whether or not there is a relationship, and after tightening the bolt, the tongue piece in the washer with the tongue piece is bent to form a stopper, and these engage with each other to perform a detent function It is possible to easily determine whether or not they are in a positional relationship, and these setting work and management work are facilitated.

  According to the third invention, the plate washer can be engaged with the bracket or the web of the support column so that the plate washer cannot be rotated. In addition, the washer with the tongue that comes into contact with the plate washer is not only prevented from rotating by friction, but is also a washer with a tongue having a bent portion in contact with the side piece of the plate washer. Can be prevented from rotating. In addition, since the washer with the tongue piece is provided with a tongue piece, the tongue piece can be bent appropriately so as to be close to or in contact with the polygon outer surface on the bolt head side to prevent loose rotation of the bolt.

  According to the fourth invention, the plate washer can be engaged with the web of the bracket or the column so that the plate washer cannot be rotated. In addition, the rotation stop washer that is crimped to the plate washer is prevented from rotating by friction, and the rotation stop washer is bent so that the tongue of the rotation stop washer is close to or in contact with the side of the plate washer. It is possible to prevent the washer from rotating. In addition, since the bottom face of the bolt head is pressure-bonded to the rotation stopper washer, rotation is prevented by friction, and the rotation is prevented by the bolt head engaging with the bent piece in the rotation stopper washer. Since rotation of the bolt itself can be prevented, loosening of the bolt due to rotation of the bolt itself can be prevented.

  According to the fifth invention, since the plurality of tongue pieces that can be bent are provided, the arm in the rotation washer overlaps with one tongue piece in the washer with the tongue piece, and even if the bending of the tongue piece is not appropriate, the other other Even if the rotation stopper washer and the arm rotate together with the bolt, the arm can be engaged with the stopper to prevent the bolt from rotating loosely.

According to the sixth aspect of the present invention, a joining metal fitting made of a plate washer, a tongue-attached washer, a rotation washer, and a nut is used for the joining metal fitting of the anchor and the anchor bolt embedded and fixed to the foundation. The plate washer can be made non-rotatable by causing the washer to abut against and engage with the column or a member fixed to the column. In addition, the washer with the tongue that comes into contact with the plate washer is not only prevented from rotating by friction, but is also a washer with a tongue having a bent portion in contact with the side piece of the plate washer. Can be prevented from rotating. In addition, the washer with the tongue piece is provided with a tongue piece, and the rotation stopper washer that comes into contact with the washer with the tongue piece is provided with an arm, so that the stopper is provided by bending the tongue piece to the arm side in the bolt axial direction. It can be engaged when the arm side rotates to prevent rotation of the rotation washer, and the nut that is prevented from rotating by the bent piece in the rotation washer serves as a detent for the nut. It can fulfill the function of preventing loosening.
Therefore, the support fence post can be securely fixed to the foundation, and a fixing structure with higher reliability of the fixing means of the protection fence support can be obtained.
In addition, the plate-shaped washer, the arm in the rotation washer, and the stopper in the washer with the tongue piece appear in the appearance away from the nut to the side. It is easy to determine whether or not it exists, and after tightening the nut, the tongue on the washer with the tongue is bent to form a stopper, and these are engaged to provide a detent function. Therefore, it is possible to easily determine whether or not the setting is present, and the setting work and the management work are facilitated.

According to the seventh aspect of the present invention, a plate-like metal fitting made of a plate-shaped washer, a tongue-mounted washer, a rotation stopper washer, and a bolt is used as the fitting for the female screw fitting embedded and fixed to the foundation. The plate washer can be made non-rotatable by causing the washer to abut against and engage with the column or a member fixed to the column. In addition, the washer with the tongue that comes into contact with the plate washer is not only prevented from rotating by friction, but is also a washer with a tongue having a bent portion in contact with the side piece of the plate washer. Can be prevented from rotating. In addition, the washer with the tongue piece is provided with a tongue piece, and the rotation stopper washer that comes into contact with the washer with the tongue piece is provided with an arm, so that the stopper is provided by bending the tongue piece to the arm side in the bolt axial direction. It can be engaged when the arm side rotates to prevent rotation of the rotation washer, and the rotation of the bolt head that is prevented from rotating by the bent piece in the rotation stop washer is achieved. , Can prevent the bolt from loosening.
Therefore, the support fence post can be securely fixed to the foundation, and a fixing structure with higher reliability of the fixing means of the protection fence support can be obtained.
In addition, the plate-shaped washer, the arm in the anti-rotation washer, and the stopper in the washer with the tongue piece appear outward from the bolt head side, so that they engage to perform the detent function It can be easily determined whether or not there is a relationship, and after tightening the bolt, the tongue piece in the washer with the tongue piece is bent to form a stopper, and these engage with each other to perform a detent function It is possible to easily determine whether or not they are in a positional relationship, and these setting work and management work are facilitated.

Next, the present invention will be described in detail based on the illustrated embodiment.
1 to 7 show a protective fence joint structure used for a bridge or the like according to an embodiment of the present invention, and FIG. 8 is a component diagram of one form of a rotation stopper washer used for the protective fence joint structure. 9 shows a component drawing of a washer with a tongue piece, and FIG. 10 shows a plate washer made of a square washer.

First, main parts used in the present invention will be described. FIG. 8 shows a non-rotating washer 8 made of steel or the like, and is located outside the bolt head, which is erected from the main body 10 at equal angular intervals on the outer peripheral side of the main body 10 having the bolt shaft insertion holes 9. A plurality of detent pieces 11 (three in the illustrated case at 120 ° intervals) are provided to be engaged with the side surfaces, and the heads of the hexagon bolts 4 are formed on the groove inner surface formed by the inner surface side of each of the detent pieces 11. 1 and 5, the inner surface side of each of the detent pieces 11 is close to or engaged with the polygonal outer surface 12 of the bolt head 5 such as the hexagon bolt 4 as shown in FIGS. It is configured.
A convex protrusion (not shown) that protrudes inward may be provided on the inner surface side of the rotation stopper 11 of the rotation stopper 8 and may be engaged so as to be crimped to the outer surface 12. By the protrusions, the bolt heads are more closely engaged, the integrity of the rotation stopper 8 and the bolt 4 is improved, the bolt 4 is less likely to come off, and the workability is also improved.

  An anti-rotation arm 13 is provided between the pair of anti-rotation pieces 11 in the main body 10 so as to be flush with the main body 10 and extend outward in the radial direction of the main body 10. The anti-rotation arm 13 is a part that is engaged with a bent stopper 29 in a washer with a tongue piece 14 to be described later.

  FIG. 9 shows a washer 14 with a tongue piece made of steel or the like, which is disposed below the rotation stop washer 8. The washer 14 with tongue piece is a washer support part for supporting the rotation stop washer 8. 15 and the washer support portion 15 is provided with a bolt shaft insertion hole 17, and the outer periphery of the washer support portion 15 is flush with the washer support portion 15. A plurality of tongue pieces 18 projecting radially outward from the center of the bolt shaft insertion hole 17 are provided. Each of the tongue pieces 18 provided integrally with the washer support portion 15 is provided at a symmetrical position in the washer support portion 15 to facilitate manufacture of the washer 14 with the tongue piece.

  Further, in the washer with tongue 14, the bent portion 34 for preventing rotation is formed integrally with the washer support portion 15 and bent at a right angle at a position radially outward from the washer support portion 15. The protrusion dimension of the anti-rotation bent portion 34 is set to be larger than the plate thickness of a plate washer 30 to be described later, and is formed by being bent at a right angle integrally with the bent portion 34. The stop portion 37 is provided so as not to overlap the bolt shaft insertion hole 17 in parallel with the washer support portion 15. The locking portion 37 and the bent portion 34 jointly engage with the plate washer 30 to prevent the tongue-shaped washer 14 from rotating. Note that the bent portion 34 and the locking portion 37 may be provided symmetrically and locked to both sides of the plate washer 30. In the above-described embodiment, the bent portion 34 and the locking portion 37 are provided in parallel with the central axis of the pair of symmetrically provided tongue pieces 18. The dimension from the center of the bolt shaft insertion hole 17 to the inside of the bent portion 34 for preventing rotation in the radial direction is equal to the distance from the center of the bolt shaft insertion hole 32 to the side 35 in the plate washer 30. Alternatively, the inner side of the bent portion 34 of the washer 14 with the tongue piece is engaged with the side (side surface) 35 of the plate washer 30 to rotate the washer 14 with the tongue piece 30. It is comprised so that it may be regulated by.

  The reason why a plurality of tongue pieces 18 are provided in the circumferentially eccentric positions on each washer support portion 15 is that the rotation-preventing arm 13 of the rotation stopper washer 8 overlaps one tongue piece 18. In this case, the one tongue piece 18 cannot be bent. Therefore, a plurality of tongue pieces 18 are provided so that one of the other tongue pieces 18 does not overlap with the anti-rotation arm 13. This is because the tongue piece 18 can be bent. However, tightening of the bolts can be strengthened so that the arm 13 is separated from each tongue piece 18. In such a case, one tongue piece 18 may be used.

  In this way, by providing a plurality of tongue pieces 18 with an interval equal to or larger than the width of the arm 13, the anti-rotation arm 13 in the rotation washer 8 is rotated so as to be tightened together with the bolt and stops at any position. However, when one tongue piece 18 is bent so as to stand on the bolt head side and the bolt 4 is loosened due to vibration or the like, even if the arm 13 for stopping rotation rotates together with the bolt 4, The anti-rotation arm 13 engages with the other upright tongue piece 18, and the rotation of the anti-rotation arm 13 is prevented, and the bolt 4 is engaged non-rotatably via the anti-rotation washer 8. , And the bolt 4 can be prevented from loosening.

  FIG. 10 shows a plate washer 30 made of a steel plate square washer, which is used in contact with the outer surface of the beam 3 or the outer surface of the bracket 2 to be described later, and is a washer body having an arcuate cross section in a longitudinal section. A joint hole comprising a bolt shaft insertion through hole 32 is provided at the center of 31, and the radius of curvature of the arcuate inner surface 33 on the radially inner side of the washer body 31 is larger than the radius of curvature of the outer surface of the bracket 2 or beam 3. When the plate-shaped washer 30 is pressed by the bolt 4 from the outside toward the outer surface of the bracket 2 or the beam 3, the washer body 31 is elastically deformed and is brought into close contact with the outer surface of the bracket 2 or the beam 3. Further, the plate thickness of the plate washer 30 is made smaller than the plate thickness of the bracket 2, and when the plate washer 30 is elastically deformed, the bracket 2 does not deform and abuts on its outer surface. Has been made possible.

  Further, since the plate washer 30 is curved, when the bolt 4 is tightened and the plate washer 30 is elastically deformed, the spring action of the plate washer 30 being elastically deformed causes a bolt Since the head of 4 has a function of crimping, it has a function of preventing the bolt 4 from loosening.

  Next, with reference to FIGS. 1-7, the book using the plate washer 30 shown in FIG. 10, the said rotation stop washer 8 shown in FIG. 8, and the said washer 14 with a tongue piece shown in FIG. The protective fence joint structure of the invention will be described. FIGS. 7A and 7B show views corresponding to FIGS. 1A and 1B in the case where the arm of the rotation stopper washer does not overlap the tongue of the washer with the tongue. .

  A steel post 1 having an H-shaped cross section is installed at intervals along a road side such as a bridge. The upper end of the post 1 is a predetermined upper end of an inner flange 20 positioned toward the road. And an outer flange 22 positioned on the opposite side of the road so that the web 21 is notched in an arc shape and is bent sideways, and is supported on these road sides. The rear side of the bracket 2 made of steel having an arc-shaped cross section that is recessed toward is fixed by welding W or the like.

  The bracket 2 is provided with one joining hole 23 formed of a bolt shaft insertion hole so as to be positioned in grooves on both sides formed by the flanges 20 and 22 of the support column 1 and the web 21.

  The bracket 2 is mounted with the end portions of two beams 3 arranged in series with an inner sleeve 19 inserted in the end portion, and the inner sleeve 19 is spaced apart in the longitudinal direction of the member. A total of four bolt joint holes (two first joint holes and two second joint holes) are provided in series at intervals. As shown in FIG. 4, each joint hole (first joint hole) 24 disposed on the inner side in the axial direction of the inner sleeve 19 is provided at a position corresponding to the grooves on both the left and right sides of the column 1. At the same time, it is arranged at a position corresponding to the joint hole 23 of the bracket 2, is used as a joint portion A to be joined by a bolt using these joint holes, and is a joint hole ( The two joint holes 25 on the outer side in the axial direction of the inner sleeve 19 are located on the outer side of the bracket 2 in the axial direction, and are connected to the joint holes 25 in the inner sleeve 19. The joint holes (second joint holes) 27 of the beams 3 are arranged concentrically, and the joint holes B are joined by bolts using these joint holes.

  Each joint hole of the inner sleeve 19 is configured by a bolt shaft insertion hole and a female screw hole of a nut 28 concentrically fixed to the inner surface, as shown in the figure, or directly provided in the inner sleeve 19. And a female screw hole (not shown).

  As described above, in the state where the inner sleeve 19 and the joint holes 24 (25) and 26 (27) of each beam 3 are disposed, the plate 2 is disposed on the bracket 2 and on both the left and right sides of the column 1 respectively. The plate washer 30 is arranged along the arcuate outer surface of the bracket 2 or the beam 3 in a state where the shaft portion of the hexagon bolt 4 with the rotation stopper washer 8 is inserted into the holes of the washer 30 and the tongue washer 14. Then, the shaft portion 36 of each hexagon bolt 4 is inserted into each joint hole, and is screwed into the female screw hole of the nut 28 constituting the joint hole 24 (25) of the inner sleeve 19, so that the bracket 2 and the inner sleeve 19 and each beam 3 are integrated. The inner sleeve 19 and each beam 3 are integrated by screwing the hexagon bolt 4 fitted with the plate washer 30, the washer with tongue 14 and the rotation washer 8 into the female screw hole of the nut 28.

  When the hexagon bolt 4 is rotated, the hexagon bolt 4 is rotated and tightened from the outside of the detent piece 11 attached to the hexagon head by a rotating tool, and is tightened to a predetermined value. At least one tongue piece 18 in the washer 14 with the tongue piece, which is located away from the anti-rotation arm 13 in the rotation stopper washer 8, is bent so as to be located on the head side in the bolt axis direction.

  As described above, by bending at least one tongue piece 18, the stopper 29 by the tongue piece 18 is formed at a position that intersects in a rotatable range of the rotation preventing arm 13.

  As described above, when the stopper 29 is formed by the tongue piece 18, when the bolt 4 is rotated together with the rotation washer 8, the anti-rotation arm 13 is engaged with the stopper 29 to prevent the rotation. The slack due to the rotation of the bolt 4 is prevented. Since the arm 13 and the stopper 29 clearly appear in appearance as in the present invention, it is possible to easily check that the bolt loosening prevention function is working, and thus management is easy. When the plate washer 30 itself is about to rotate, the plate washer 30 installed on the outer surface of the beam 3 on the same surface as the bracket 2 is shown in FIGS. Since the length from the center of the plate washer 30 to the vertical end of the plate washer 30 is longer than the distance from the center to the side of the web 21 of the bracket 2 or the column 1, the corner portion of the plate washer 30 is longer. Can be brought into contact with the side edge of the bracket 2 or the side surface of the web 21 of the column 1 to prevent the plate washer 30 from rotating, thereby preventing the bolt 4 from loosening due to the rotation of the plate washer 30. .

  In the embodiment, two tongue pieces 18 are provided in each washer support portion 15 in the washer 14 with tongue pieces. However, when the present invention is implemented, one tongue piece 18 is provided in each washer support portion 15. It may be. In this case, what is necessary is just to set the arm 13 in the rotation stopper washer 8 at a position away from the tongue piece 18 as appropriate. Alternatively, three or more tongue pieces 18 may be provided at equal angular intervals and the bolts 4 may be prevented from loosening by early engagement of the arms 13 and the stoppers 29 by the tongue pieces 18.

  In the case of carrying out the present invention, the tongue piece in the washer with the tongue piece and the arm in the rotation washer only have to be bent so as to perform a stopper function. Instead of the stopper, the stopper may be a tongue piece that cannot be bent. Although the tongue piece in the washer with the tongue piece may be bent outward, the arm in the rotation stopper washer may be bent inward. It is more aesthetically pleasing to hide the protrusions inward than when the tongues are bent outwards, but for maintenance / inspection or anti-corrosion coating, Direction folding is advantageous.

  Next, referring to FIG. 11 to FIG. 15, anchor bolts 41 (in the case of FIG. 11) using the same joining metal fittings as in the above embodiment and embedding and fixing the pillar 1 in the guard fence into the foundation concrete 40 in the road bridge. ) Or a fixing structure for fixing to the female screw fitting 42 (in the case of FIG. 14).

  FIGS. 11 to 13 show a form of a fixing structure of the protective fence in which the support pillar 1 in the protective fence is fixed to an anchor bolt 41 embedded and fixed in the foundation concrete 40 by a connecting metal. It comprises a washer 30, a washer with a tongue 14, a rotation washer 8 and a nut 43. The bolt 4 of the embodiment shown in FIG.

  The lower portions of a plurality of anchor bolts 41 are embedded and fixed to the concrete foundation 40 at intervals in the front-rear direction and the left-right direction, and the bolt insertion holes of the base plate 44 of the support column 1 in the guard fence are respectively inserted into the anchor bolts 41. In this manner, the column 1 is placed on the foundation concrete 40, and the plate-like washer 30, the washer 11 with the tongue piece, the rotation stopper washer 8 and the nut 43 are arranged on the upper surface of the base plate 44. Since the plate-shaped washer 30, the washer with tongue piece 14, and the rotation stopper washer 8 have the same configuration as in the above-described embodiment, the same reference numerals are given. Each rotation stop piece 11 in the rotation stop washer 8 is engaged with the polygon outer surface 12 of the hexagon nut 43, the rotation stop washer 8 is attached to the nut 43, and these are screwed onto the anchor bolt 41. That's fine.

  In this embodiment, when the plate washer 30 comprising the plate washer 30 is rotated, the plate washer 30 is fixed to the inner flange 20 or the outer flange 22 or the web 21 of the column 1 or to the base plate 44 of the column 1 adjacent thereto. The plate-shaped washer 30 and the like are fixed to a member fixed to the support column and prevented from rotating. By preventing the plate-shaped washer 30 from rotating, the nut 43 is prevented from rotating loosely.

  In this embodiment, since the member screwed and fixed to the anchor bolt 41 is the nut 43, the nut 43 is reliably prevented from rotating. A more reliable fixing structure can be provided as the fixing structure of the support fence post 1.

  14 and 15 show a form in which the support column 1 in the guard fence is fixed to a female screw fitting 42 embedded and fixed in the foundation concrete 40 in the road bridge. In the female screw fitting 42, the lower portion of the female screw fitting 42 is screwed and fixed to the upper portion of the anchor bolt 41 embedded and fixed in the foundation concrete 40, and is fixed by welding as necessary. In this embodiment, the joint fitting is composed of a plate washer 30, a washer with a tongue piece 14, a rotation washer 8 and a bolt 4.

  A plurality of female screw fittings 42 are embedded and fixed in the concrete foundation 40 at intervals in the front-rear direction and the left-right direction, and the bolt insertion holes of the base plate 44 of the support column 1 in the protective fence are respectively positioned in the female screw fittings 42. The column 1 is placed on the concrete foundation 40, and the plate-like washer 30, the tongue-attached washer 14, the rotation washer 8 and the bolt 4 are arranged on the upper surface of the base plate 44. Since the plate-shaped washer 30, the washer with tongue 14, the rotation washer 8 and the bolt 4 have the same configuration as that of the embodiment shown in FIG. 2, the same reference numerals are given. Except that each bolt 4 is screwed into the female screw fitting 42 to fix the base plate 44 to the concrete foundation 40, the configuration is the same as that shown in FIG.

  In this embodiment as well, as in the embodiment shown in FIG. 11, the plate washer 30 comprising the plate washer 30 is rotated when the inner washer 20 or the outer flange 22 or the web 21 or the strut of the strut 1 is rotated. Abutting against a member fixed to the column such as an adjacent plate washer 30 fixed to one base plate 44, its rotation is prevented, and rotation of the plate washer 30 is prevented. Is preventing.

  In this embodiment, since the member to be screwed and fixed to the female screw fitting 42 is the bolt 4, the bolt 4 is reliably prevented from rotating. It is possible to provide a highly reliable fixing structure that does not cause loosening of the bolts 4 that fix the support fence post 1.

  Next, a modification of the embodiment will be described.

(Modification 1)
In each of the above-described embodiments, when the joining metal fitting includes the plate washer 30, the washer 14 with the tongue piece, the rotation washer 8, and the bolt 4 (or the nut 43), the rotation stopper washer is used. Either 8 or the washer 14 with a tongue piece may be omitted.

  For example, although not shown in the figure, a joint fitting comprising three parts, that is, the plate washer 30, the washer 14 with the tongue piece, and the bolt 4 (or the nut 43) may be used. In this case, the tongue is attached to the plate washer 30. The washer 14 is abutted directly, and the tongue piece 18 of the tongue washer 14 is bent so as to approach or abut one side (one surface) of the hexagonal head (polygonal outer surface) on the bolt head side, and the bolt 4 ( Or the rotation of the nut 43) can be prevented.

(Modification 2)
As another modification, (2) a plate-shaped washer 30, a rotation stopper washer 8, and a bolt 4 (or nut 43) may be used as a joint fitting. In this case, the plate-shaped washer The rotation stopper washer 8 is brought into direct contact with the arm 30 and the arm 13 of the rotation stopper washer 8 is bent so as to engage with the side surface of the plate washer 30 to prevent rotation between the rotation stopper washer 8 and the plate washer 30. You may make it do.

  In the present invention, the anti-rotation washer 8 and the head of the bolt 4 (or nut 43) naturally have an anti-rotation action due to the friction of the crimping face material such as the head of the bolt 4 (or nut 43). The contact surface such as a portion may be a rough surface to prevent the bolt (or nut 43) from rotating.

  Further, when the present invention is carried out, the non-rotating engagement relationship between the bolt head (or nut 43) and the rotation stopper washer may be a bent piece of the rotation stopper washer as in the above embodiment. Instead, a non-rotating engagement portion such as a hexagonal recess that engages with the bolt head (or nut 43) and does not rotate relative to each other is provided on the rotation washer, and is concentric with the non-rotating engagement portion. The bolt shaft insertion hole may be provided.

  The protective fence joint structure and the fixing structure of the present invention may be applied not only to a joint structure or a fixing structure in a new guard fence but also to a joint structure or a fixing structure in an existing protective fence.

(A) is a partially longitudinal rear view showing a protective fence joint structure of one embodiment of the present invention, and (b) is a partially enlarged view thereof. (A) is a vertical side view of the protective fence joint structure shown in FIG. 1, and (b) is an enlarged view of a part of (a). (A) And (B) is the partially exploded side view and perspective view which decompose | disassemble and show the volt | bolt etc. in the guard fence joint structure shown in FIG. It is a cross-sectional top view which shows a part of relationship between an inner sleeve, a bracket, and a beam. When the plate washer has a tongue with a bent portion that engages with the side of the plate, and the upper and lower tongues provided at both ends of the washer, the arm is raised when the anti-rotation washer rotates. It is a perspective view which shows that it engages with the tongue piece and rotation is prevented. (A) is explanatory drawing for demonstrating that it engages with a bracket when the plate-shaped washer arrange | positioned at the beam side rotates, and that rotation is prevented, (b) is plate-shaped washer of a support | pillar. It is explanatory drawing for demonstrating engaging with a web and the rotation being prevented. (A) And (B) is a figure equivalent to Drawing 1 (A) and (B) in the case where the arm in a rotation stop washer is a position which does not overlap with the tongue piece in a washer with a tongue piece. The rotation stopper washer is shown, wherein (a) is a front view and (b) is a bottom view. 1 shows a washer with a tongue piece, in which (a) is a front view and (b) is a plan view. A plate washer is shown, wherein (a) is a side view and (b) is a front view. It is a vertical side view which shows one form of the fixing structure of the support | pillar in a protection fence. FIG. 12 is a partial cross-sectional plan view of FIG. 11. It is a schematic perspective view which shows the relationship between the anchor bolt embedded and fixed to the concrete foundation, and a support | pillar. It is a vertical side view which shows the other form of the fixing structure of the support | pillar in a protection fence. It is a partial cross section top view of FIG. It is a partially exploded perspective view which shows the conventional guard fence joint structure.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support | pillar 2 Bracket 3 Beam 4 Bolt 5 Bolt head 6 Flat washer 7 Spring washer 8 Rotation stop washer 9 Bolt shaft part insertion hole 10 Main body 11 Rotation stop piece 12 Polygon outer surface 13 Anti-rotation arm 14 Washer 15 with tongue piece Washer support portion 16 Connecting plate 17 Bolt shaft portion insertion hole 18 Tongue piece 19 Inner sleeve 20 Inner flange 21 Web 22 Outer flange 23 Bracket joint hole 24 Inner sleeve first joint hole 25 Inner sleeve second joint hole 26 Beam first joining hole 27 Beam second joining hole 28 Nut 29 Stopper 30 Plate washer 31 Washer main body 32 Bolt shaft portion insertion hole 33 Arc-shaped inner surface 34 Anti-rotation bent portion 35 Side (side surface)
36 Shaft part 37 Locking part 40 Foundation concrete 41 Anchor bolt 42 Female thread fitting 43 Nut 44 Base plate

Claims (7)

It is a protective fence joint structure that joins a column and a beam,
The brace and beam joints consist of a plate washer, a washer with tongue, a rotation washer and a bolt,
The plate washer is formed in such a size that when it rotates, it hits a support or a member fixed to the support and cannot rotate.
The washer with a tongue includes at least one bent portion that contacts the side of the plate washer and at least one tongue that can be bent at the other end, and the at least one tongue is a bolt in a bolt axial direction. It is folded so that it is located on the head side, and a stopper with a tongue piece is formed,
The rotation stopper washer is a guard fence joint structure including a bent piece that engages with a bolt head and restricts its rotation, and an arm that can be engaged with the stopper. It is a protective fence joint structure that joins a column and a beam,
A support, an inner sleeve, and a beam fitted to the outside of the inner sleeve,
A bracket is fixed to the upper end of the column, and the beam with the inner sleeve inserted therein is placed on the bracket.
Joining at least one joining part of joining part A which joins the bracket of a support, a beam, and an inner sleeve, and joining part B that joins a beam and an inner sleeve with a joining metal fitting,
The joint fitting is composed of a plate-like washer arranged on either the outer surface of the bracket or the outer surface of the beam, a washer with a tongue piece, a rotation washer and a bolt,
When the plate washer rotates, the plate washer arranged on the outer surface of the beam is engaged with the bracket, and the plate washer arranged on the outer surface of the bracket is engaged with the web of the column so that it cannot rotate.
The washer with a tongue includes at least one bent portion that contacts the side of the plate washer and at least one tongue that can be bent at the other end, and the at least one tongue is a bolt in a bolt axial direction. It is folded so that it is located on the head side, and a stopper with a tongue piece is formed,
The rotation stop washer has a bent piece that engages with a bolt head and restricts its rotation, and an arm that can engage with the stopper. Instead of the joint metal fitting comprising the plate washer, tongue washer, rotation stopper washer and bolt according to claim 1 or 2, the joint metal fitting comprises a plate washer, tongue washer and bolt,
A washer with a tongue is arranged on the outer surface of the plate washer,
The tongue-attached washer includes a bent portion that is in contact with the side of the plate washer at one end and a tongue piece that can be bent at the other end.
A protective fence joint structure in which a tongue piece in the washer with the tongue piece is bent so as to approach or abut against a polygon outer surface on the bolt head side. Instead of the joint fitting consisting of the plate washer, tongue-mounted washer, rotation stopper washer and bolt of claim 1 or 2, the joint fitting comprises a plate washer, rotation stopper washer and bolt,
When the plate washer is rotated, it is engaged with the bracket or the web of the support column and cannot be rotated,
The rotation stopper washer has a bent piece for restricting the rotation of the bolt head and a tongue piece at one end, and the tongue piece is bent so as to be close to or abut on the side piece of the plate washer. Protective fence joint structure.   A plurality of foldable tongue pieces are provided at intervals on the washer with the tongue piece, and at least one tongue piece is bent so as to be positioned on the bolt head side in the bolt axial direction, thereby forming a stopper by the tongue piece. The protective fence joint structure according to claim 1 or 2. In the protective fence fixing structure, which is fixed to the anchor bolt embedded and fixed in the base of the protective fence with a joint bracket,
The joint fitting is composed of a plate washer, a washer with a tongue piece, a rotation stopper washer, and a nut. When the plate washer rotates, the plate is abutted against a column or a member fixed to the column and cannot be rotated. Formed with
The tongue-attached washer includes at one end a bent portion that contacts the side of the plate washer and at least one tongue piece that can be bent at the other end, and the at least one tongue piece is positioned on the nut side. Is folded to form a stopper with a tongue piece,
The rotation stopper washer includes a bent piece that engages with a nut and restricts the rotation prevention, and an arm that can be engaged with the stopper. In the protective fence fixing structure, which is fixed to the female screw bracket embedded and fixed on the foundation of the protective fence with a joint bracket,
The joint fitting is composed of a plate washer, a washer with a tongue, a rotation washer and a bolt, and when the plate washer is rotated, it hits a support or a member fixed to the support so that it cannot be rotated. Formed with
The washer with a tongue is provided with a bent portion that is in contact with the side of the plate washer at one end and at least one tongue that can be bent at the other end, and the at least one tongue is on the bolt head side. It is folded so as to be positioned to form a stopper with a tongue piece,
The anti-rotation washer includes a bent piece that engages with a bolt head and restricts the rotation of the bolt, and includes an arm that can engage with the stopper.

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