JP2564772B2 - Overhang bracket for guardrail - Google Patents

Description

Detailed Description of the Invention

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an overhang bracket for installing guardrails while avoiding buried objects and the like.

2. Description of the Related Art Conventionally, there are a single-sided bracket and a double-sided bracket shown in FIG. 5 of Japanese Utility Model Laid-Open No. 3-46517 as an overhang bracket for a guardrail. 6 (a) (b)
As shown in FIG. 1, the pair of left and right single-sided symmetric overhang brackets 101, 101 ′ is made of a horizontally long member, has two round holes (not shown) at its base end, and has a guardrail 109 at its tip. Mounting pieces 111a, 11 for mounting
1b is provided. The method of attaching the pair of overhang brackets 101 and 101 ′ to the column 114 is as follows.
The overhang brackets 101 and 101 ′ are fixed to the columns 114 by screwing bolts 112 and 113 through the holes on the base end side of the overhang brackets 101 and 101 ′ and the holes of the columns 114 and using nuts. Further, the holes 110a, 110 of the mounting pieces 111a, 111b on the tip side of the overhang bracket 101 are also provided.
The bolt 122 is passed through the holes b and the guard rail 109, and the nut 123 is screwed. The double-sided bracket has the same attachment.

However, the column 1
Single-sided overhang bracket 101 for attaching to 14
The two round holes drilled on the base end side of the bolt are bolts 112,
Under the present circumstances, the diameters of the bolts 112 and 113 have to be larger than the diameters of the bolts 112 and 113 in order to make it easier to insert them. Therefore, the overhang brackets 101 and 101 'are attached to the support 11
4 even if it is installed horizontally, as shown in FIG.
The tip of 01, 101 'will sink and bow forward. The longer the overhang bracket 101, the greater the illustrated settlement amount δ.
In this case, the strength of the guardrail 109 at the time of a collision may decrease. Furthermore, if there are obstacles (buried objects such as water pipes or bridges) in the burial place, the struts 114 cannot be placed at a fixed position, and the struts 114 are retracted to avoid obstacles. Must be installed in the condition. For this reason, in the presence of obstacles, the distance between the support pillar and the guard rail cannot be made constant, and the overhang bracket whose length is standardized cannot be used uniformly. Therefore, the operator must consider the size of the obstacles, etc., and on the site, cut the long gap material with gas etc. one by one by hand and punch holes to process the overhang bracket. . Currently, it takes about one hour to process one overhang bracket.
Therefore, the work of installing the guardrail at the location where the obstacle exists is extremely complicated, and the work of installing the overhang bracket of the guardrail is inefficient. Therefore, it is an object of the present invention to provide a guardrail overhang bracket that prevents sinking of the tip of the overhang bracket, improves the strength of the guardrail in a horizontal state, and improves the work of installing the overhang guardrail in a place where an obstacle exists. It is what

According to the present invention, a tip end portion for attaching a guard rail, a base end portion for attaching a support, and a plurality of round holes are partially overlapped in series in the lateral direction. A perforated upper slot and a lower side of the upper slot, which is arranged parallel to the upper slot and offset toward the base end, and has the same shape as the upper slot. An overhang bracket for a guardrail, which is provided with a hole.

The upper slot and the lower slot are deviated so that the protruding bracket tip faces upward, and the sinking amount of the bracket tip is folded in advance. Therefore, the rising amount and the sinking amount of the tip of the overhanging bracket cancel each other out, so that the bracket becomes perfectly horizontal. The position where the bolt is inserted into the upper long hole and the lower long hole can be changed to adjust the position of the overhang bracket with respect to the column in the longitudinal direction.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A guardrail overhanging bracket 1 of an embodiment will be described below with reference to FIGS. The overhang bracket 1 for a guard rail in FIG. 1 is formed in a U-shaped cross section by connecting one vertical plate 2 and two horizontal plates 3a and 3b. The overhang bracket 1 has a base plate 4 of a vertical plate 2 having an upper long hole 5 and a lower long hole 6, and a front end 7 of the vertical plate 2 is notched into a substantially trapezoidal shape to form a recess 8 to form a guardrail. 9 corresponding to the mounting hole 10
Mounting pieces 11a and 11b having a and 10b are formed by bending outward at a right angle in the vicinity of the substantially central portion of the tip portion 7. As shown in FIG. 2, the upper elongated hole 5 has six round holes 5a to 5f each having a diameter D and formed in a horizontal direction by partially overlapping in series. The distance between the centers of adjacent round holes is G, the center distance G is smaller than the diameter D, and the upper slot 5 has a so-called dumpling shape. The lower elongated hole 6 has the same shape as the upper elongated hole 5, and is provided with holes 6a to 6f corresponding to the round holes 5a to 5f. The upper oblong hole 5 and the lower oblong hole 6 are arranged in parallel in two steps at a predetermined interval, and the lower oblong hole 6 is arranged with a deviation L offset to the base end portion 4 side, and It is supposed to be retracted to the right. Deviation L is bracket 1,
It is determined in consideration of various conditions such as the length of 1 ', the center-to-center distance G, and the diameter D. The deviation L is made larger than the difference between the center-to-center distance G and the diameter D. In this embodiment, the diameter D is 22 mm, the center-to-center distance G is 20 mm, and the deviation L is 6 mm, but the numerical values are not limited. The magnitude of the deviation L is adjusted according to the length of the overhang bracket 1. That is, the longer the overhang bracket 1 is, the larger the subsidence amount is, and therefore the deviation L is increased. On the contrary, the shorter the overhang bracket 1 is, the smaller the subsidence amount is. Therefore, the deviation L is made smaller. Notches 8a, 8 are provided in the recess 8.
b is provided. The support column 14 of FIGS. 3A and 3B will be described. Mounting holes 17 and 18 are pierced in the pillar body 15 in the diameter direction, and the pillar body 15 stands upright from the substrate 16. The pillar main body 15 and the substrate 16 are connected and reinforced by four vertical ribs 19a to 19d. The substrate 16 is perforated so that it can be fixed to the ground with bolts and nuts. Vertical ribs 19a-1
Notches 21 are provided in each 9d. Prop 14
The shape and structure of the above are merely for convenience of description, and include the substrate 16, the vertical ribs 19a to 19d, and the mounting hole 20a.
Naturally, all other shapes and structures are included and are not limited at all, such as those in which ~ 20d and the like are removed and fixing to the ground is made an insertion type. Figure 4 (a)
The assembling method and usage state of this embodiment will be described based on FIG. Prepare the overhanging bracket 1 and the overhanging bracket 1'having a symmetrical shape, and use the bolt 12 as the upper slot 5 and the mounting hole 17, the upper slot 5'of the overhang bracket 1 ', and the bolt 13 as the lower slot 6. Insert the bolt 1 through the mounting hole 18 and the lower long hole (not shown) of the bracket 1 '.
2 and 13 are screwed together with nuts, and the overhanging bracket 1 and the overhanging bracket 1 ′ are orthogonal to the columns 14 and fixed horizontally. The bolts 12 and 13 need to be inserted into the corresponding holes 5a to 5f and 6a to 6f, respectively. For example, if the bolt 12 is inserted through 5c, the bolt 13 is inserted through 6c. Next is the guardrail 9
The holes (not shown) are aligned with the mounting holes 10a and 10b, and the bolts 22 are inserted and screwed with the nuts 23. Since the lower long hole 6 is offset to the right by the deviation L toward the base end portion 4 side than the upper long hole 5, the tip of the overhang bracket 1 rises, and the amount of rise is as shown in FIG. It is possible to make the overhang brackets 1 and 1 ′ horizontal by just canceling each other with the subsidence amount δ of). Therefore, it is possible to prevent the strength of the guard rail 9 and the overhang bracket 1 from being lowered when the automobile collides. Further, as shown in FIG. 5, when there is no obstacle 20 such as a buried object, an ordinary bracket (see FIG. 2 of No. Kaikai 3-46517) is used to
The overhanging bracket 1 is used where there is. The bolts 12 and 13 can be removed by inserting them into the holes 5a to 5f and the holes 6a to 6f, and the bolt tightening positions can be shifted left and right at a pitch of the center-to-center distance G to shift the positions of the overhang brackets 1 and 1'with respect to the support columns 14. This is possible (see arrow A in FIG. 4B), and it is possible to cope with a change in the distance between the guardrail 9 and the support 14. Therefore, there is no need for the operator to manually determine the length of the bracket and manually cut the long gap members one by one with gas or the like by observing the condition of the obstacle 20. Therefore, a standardized overhanging bracket can be used, and the work efficiency of installing the guardrail at the place where the obstacle 20 is present is significantly improved. The tip 7 of the overhanging bracket 1 may be slightly upward depending on the size and shape of the attaching holes 17 and 18, but the overhanging bracket 1 can be easily made horizontal by hitting it with a hammer or the like. The present embodiment has been described above, but it goes without saying that the configuration of the present invention can be appropriately changed without departing from the technical idea of the present invention. The lengths of the upper long hole 5 and the lower long hole 6 are not limited to those in the embodiment, and the obstacle 2
Holes 5a to 5f and holes 6a to 6f corresponding to the size of 0, etc.
The number of can be increased or decreased. The pillar 14 is an embedded type,
Of course, other structures may be used.

As described above, according to the present invention, since the lower elongated hole is disposed in parallel with the upper elongated hole and is displaced to the base end side, the amount of rise and sink of the bracket tip is reduced. Balance with the amount, you can prevent the sinking of the overhang bracket,
By making the overhang bracket horizontal, it is possible to prevent the strength of the guardrail from being lowered in the event of a collision such as an automobile. Since a plurality of round holes are serially partially overlapped and drilled in the lateral direction, it is possible to change the distance between the support pillar and the guard rail simply by shifting the bolt position along the upper long hole and the lower long hole. hand,
It can deal with obstacles. Therefore, it is possible to improve the efficiency of the guardrail installation work in the place where there is an obstacle. Further, even if the bracket faces upward due to the shape of the support hole, the overhanging bracket can be made horizontal simply by hitting it with a hammer or the like.

[Brief description of drawings]

1A is a plan view of this embodiment, FIG. 1B is a front view of this embodiment, and FIG. 1C is a left side view of this embodiment.

FIG. 2 is a partially enlarged front view of the vicinity of a long hole of the present embodiment.

FIG. 3A is a perspective view of a pillar of the present embodiment, and FIG. 3B is a plan view of the pillar of the present embodiment.

FIG. 4A is a perspective view showing a usage state of the present embodiment,
(B) is a front view showing a usage state of the present embodiment.

FIG. 5 is a plan view showing a usage state of the present embodiment.

FIG. 6A is a perspective view showing a usage state of a conventional technique,
(B) is a front view showing a conventional state of use.

[Explanation of symbols]

 1, 1 ', 101, 101' Overhang bracket 2 Vertical plate 3a, 3b Horizontal plate 4 Base end part 5, 5'Upper long hole 5a to 5f, 6a to 6f hole 6 Lower long hole 7 Tip part 8 Recess 8a, 8b Notch 9 Guardrail 10a, 10b, 110a, 110b Mounting hole 11a, 11b, 111a, 111b Mounting piece 12, 13, 112, 113 Bolt 14,114 Strut 15 Strut body 16 Substrate 17,18 Mounting hole 19a-19d Rib 20a- 20d mounting hole 21 notch 22,122 bolt 23,123 nut

Claims (1)

(57) [Claims] 1. A front end portion for mounting a guard rail, a base end portion for mounting a support, and an upper long hole in which a plurality of round holes are partially overlapped in series and are laterally perforated. On the lower side of the upper elongated hole, a lower elongated hole having the same shape as the upper elongated hole is provided in parallel with the upper elongated hole and offset to the base end side. A characteristic overhang bracket for guardrails.