JPH0663620U - Guardrail support - Google Patents

Abstract

(57) [Summary] [Purpose] The purpose of this work is to shorten the work period and make it possible to easily adjust the height even after setting the columns. [Structure] A structure 6 having a pre-insertion hole 6a is fitted and fixed in a buried hole 8 drilled at a desired position on a road surface 7, and further made to correspond to an inclined surface 1a at the lower end of a column 1. Short metal fitting 2
The inclined portion 2a has an expanded portion, and the other end of the short tubular metal fitting 2 has a bolt 3 having one end fixed. The other end of the bolt 3 is inserted into the short tubular metal fitting 2 and the support 1. Let me support 1
Is connected to the short tube fitting 2, and the end of the bolt 3 is tightened by a nut 5 screwed to the bolt 3 through a receiving piece 4 provided at the upper end of the strut 1, so that the expansion portion at the lower part of the strut 1 is tightened. Is inserted into the insertion hole 6a of the structure 6 and the nut 5 is tightened to cause a deviation in the expansion portion, and the lower portion of the support column 1 and the short tubular metal fitting 2 are expanded toward the inner wall of the insertion hole 6a for press contact. 1 is set up.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a guardrail column used for a guardrail for protecting the safe operation of a vehicle at a location where traffic is dangerous, such as a curved portion of a road or a "gakebuchi", or for preventing a pedestrian from entering.

[0002]

[Prior art]

 The conventional guardrail stanchions have concrete holes for burying the lower part of the stanchions at appropriate intervals on the road surface of the above-mentioned places where there is a traffic danger on the road, and concrete is put in the concrete. It is publicly known that a steel plate is installed between the stanchions and fixed at a certain height from the road surface.

[0003]

[Problems to be solved by the device]

 The problem to be solved is to make a hole for pouring concrete from the road surface as described above, pour concrete into this hole, and then insert the lower part of the pillar into this concrete until the concrete is solidified. It must be held by a member and it takes time to solidify. Therefore, there was a problem in terms of construction period. It is also necessary to make the height of the columns constant, and to make this height constant means that the columns cannot be adjusted after the concrete is set by embedding the columns in the concrete and making the height constant. There was a problem in terms of holding means.

[0004]

[Means for Solving the Problems]

 In order to deal with the above-mentioned problem, the present invention pre-configures a concrete structure having an insertion hole for inserting a strut, and after this concrete structure is fitted and fixed in an embedding hole drilled at a desired position on the road surface. Inside the insertion hole of the structure, there is an expansion means consisting of a plurality of short tube fittings with the lower side of the column and the corresponding surface facing this inclined surface, and one end is fixed to the lowermost short tube fitting. Each of the bolts is loosely fitted into the short tubular metal fitting and the column, and the expanded portion is pressed and fixed to the inner wall of the insertion hole by tightening the bolt by utilizing the deviation of the inclined surface of the short tubular metal fitting in the expanded portion. In addition, a guardrail strut is provided with a cap that covers the bolts and nuts at the upper end of the strut.

[0005]

[Action]

 After the concrete structure 6 having the insertion hole 6a provided in the buried hole 8 drilled at a desired position on the road surface is fitted and fixed in place, the support surface 1 and the inclined surfaces 1a and 2a of the short tubular metal fitting 2 are inserted into the insertion hole 6a. Correspondingly, the ends of the short tubular metal fittings 2 were connected to each other by bolts 3 with one end attached. The lower side of the hollow support 1 and the short tubular metal fittings 2 were inserted to adjust the height of the upper end of the hollow support 1 to the set position. When the bolt 3 is tightened with the nut 5 screwed to the bolt 3 via the receiving piece 4 provided at the upper end of the rear hollow support 1, the short tubular metal fitting 2 is pulled and corresponds to the inclined surface 1a of the hollow support 1. The inclined surface 2a of the short tubular metal fitting 2 is displaced due to the tightening, and due to this displacement action, the hollow column 1 and the short tubular metal fitting 2 are pressed against and fixed to the inner wall of the insertion hole 6a. After the tightening action is completed, the cap 10 covers the nut 5 at the upper end. When the height of the support column 1 is to be adjusted differently, the cap 10 is removed and the nut 5 is loosened to loosen the expanded portion pressed against the inner wall of the insertion hole 6a. Therefore, at this time, the stanchion can be moved up and down, the height can be adjusted, and the nut 5 can be tightened again, so that the adjustment can be easily performed.

[0006]

【Example】

 The drawings show an embodiment of a girl rail support according to the present invention, which will be described below with reference to the drawings.

In one embodiment of FIGS. 1 and 2, reference numeral 1 is a hollow column having a plurality of holes for mounting a steel plate a on its upper side, and 2 is a short tubular metal fitting. The lower end of the hollow column 1 and the corresponding end face of the short tubular metal fitting 2 are formed with inclined slopes 1a and 2a, respectively, and slidable along the inclined faces 1a and 2a so that the hollow column 1 can be slid. Further, the pressing of the short tube fitting 2 causes the inclined surfaces 1a, 2a to be displaced so as to be expanded.

At the opposite end of the inclined surface 2 a of the short tubular metal fitting 2, one end of a bolt 3 which is inserted through the short tubular metal fitting 2 and the hollow strut 1 and is loosely fitted is fixedly attached, and the other end of the bolt 3 is attached. Is a hollow pillar 1 that is protruded from the hollow pillar 1 through a long hole 4a provided in a receiving piece 4 provided at the upper end of the hollow pillar 1. It is designed to be expanded.

The lower side of the column 1 and the short tube fitting 2 are inserted into the insertion hole 6a of the concrete structure 6 which is formed by previously forming the insertion hole 6a. The concrete structure 6 is fixed by embedding the concrete structure 6 in an embedding hole 8 formed at a desired position on the road surface 7.

Further, the support plate 1 is attached between the support columns 1 and 1 by mounting the support plate 1 and the steel plate a on the support column 1 with a bolt b.

FIG. 3 shows another embodiment in which another second short tubular metal fitting 9 is additionally used between the hollow support 1 and the short tubular metal fitting 2 of the first embodiment. In order to interpose between the hollow support 1 and the short tubular metal fitting 9 in the second cylindrical metal fitting 9, the second short tubular metal fitting 9 has inclined surfaces 9a and 9b at the corresponding ends of the hollow support 1 and the short tubular metal fitting 2, respectively. The tightening of the nut 5 causes a deviation along the inclined surface.

Reference numeral 10 denotes a cap for covering the nut 5 at the upper end of the hollow column 1.

[0013]

[Effect of device]

 The present invention consists of a hollow column and a short tube metal fitting, and the other end of the bolt whose one end is fixed to the short tube metal fitting is passed through the short tube metal fitting and the central pillar through the long hole of the receiving piece provided on the upper end of the hollow pillar to externally When the nut is screwed to the bolt, the gap between the inclined surface of the hollow column and the inclined surface of the corresponding short metal fitting will be misaligned. Since it is pressed and fixed to the inner wall of the hole, it is not necessary to wait until the concrete is solidified by inserting the pillar into the concrete as in the conventional case, and it is easy to construct a concrete structure with an insertion hole in advance. It can be installed on a pillar, and the construction period can be shortened. Also, the height of the column can be easily adjusted by loosening or tightening the nut, which has the effect of being more convenient than conventional concrete planting.

[Brief description of drawings]

FIG. 1 shows an embodiment of a guardrail strut according to the present invention, and is a vertical sectional side view when a guardrail strut is installed.

FIG. 2 is a vertical cross-sectional side view of a guardrail column before installation.

FIG. 3 is a vertical cross-sectional view of another embodiment of the guardrail column when the guardrail column is installed.

[Explanation of symbols]

 1 Hollow support 1a Inclined surface 2,9 Inclined metal fittings 2a, 9a, 9b Inclined surface 3, b Bolt 4 Receiving piece 5 Nut 6 Concrete structure 6a Insert hole 7 Road surface 8 Buried hole 10 Cap a Steel plate

Claims (1)

[Scope of utility model registration request] 1. A structure having an insertion hole is embedded in an embedding hole formed at a position where a pole is installed on a road surface, and the insertion hole of the structure is provided with an inclined surface having inclined corresponding end faces. Arrangement of the expanding means provided, a support having a steel plate mounting hole, and a short tubular metal fitting, and the other end of the bolt having one end attached to the lowest short tubular metal fitting is passed through the short tubular metal fitting and the support for loose fitting. The free end side of this bolt is received by the receiving piece via the nut through the long hole provided in the receiving piece at the upper end of the strut, and the lower side of this strut and the expanding means of the short tube fitting are inserted and screwed into the bolt. By tightening the fitted nuts, the lower side of the column and the expanded part of the short tubular metal fitting are pressed and fixed to the inner wall of the insertion hole by the displacement action due to the inclination of the expansion means, and a cap that covers the nut is attached to the upper end side of the column. Guardrail stanchions featuring removable installation.