JP2000352036A - Movable columnar structure - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a movable columnar structure having an approximately equal outside diameter to that of a column, providing a large impact energy absorbing amount when a load is received, facilitating production and assembly, and also providing an excellent durability. SOLUTION: This movable columnar structure comprises a columnar body 10 having a lower end part peripheral surface in which bolt holes 33 are provided, an elastic base board 12 formed so that connection plates 25 and 27 are installed approximately in parallel with the upper and lower surfaces of a rubber elastic body 23 and bolts 29 are installed projectedly on the connection plates 25 and 27, a base body 13 buried partly in a concrete 35 and having an upper end part peripheral surface in which bolt holes 14 are provided, and two connection members 29 and 30 connecting the columnar body 10 to the elastic base board 12 and the elastic base board 12 to the base body 13. The connection members 29 and 30 comprise a short cylinder 15 formed so that the bolt holes 19 are provided around the peripheral surface thereof, and a female thread part is provided in the bolt holes 10 or a female thread part positioned approximately concentrically with the bolt holes 19 is provided in the internal surface thereof and connection plates 25 and 27 in which bolt holes 19 are provided. The upper and lower bolts 29 and 30 of the elastic base board 12 are inserted into the bolt holes of the connection plates 25 and 27, and fixed with nuts 20, the short cylinder 15 of the connection member 11 is fitted closely to the columnar body 10 and the base body 13, and the bolts 28 and 30 are inserted from the bolt holes 14 in the peripheral surface so as to screw them into the female thread parts for connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a columnar structure used for a fender fence, or a columnar structure used for a safety fence installed on a handrail of a breakwater, a river, a pond, or the like.
The present invention relates to a columnar structure used as a fender installed between a small ship and a berth or other berthing facility to protect the ship by absorbing the shock of the ship when the small ship is berthing with a berthing facility.

[0002]

2. Description of the Related Art In general, a columnar structure is a rigid structure embedded in the ground when concrete is poured. However, a pillar structure for a safety fence or a support structure for a railroad crossing has a cushioning function. There has been proposed a columnar structure that is inclined when a load is applied, restored when the load is released, and is repeatedly inclined and restored. As such a columnar structure, for example,
There is a columnar structure described in Japanese Patent Application Laid-Open No. 12446, Japanese Utility Model Publication No. 5-33543, or Japanese Patent Application Laid-Open No. 9-316835.

[0003] The columnar structure described in Japanese Utility Model Publication No. 5-12446 is a pillar having a cylindrical body whose upper end is closed, a fixing portion for inserting and fixing the lower end of the pillar, and removable to concrete on the ground. And a rubber-like elastic body provided between the fixing portion and the outer cup. The rubber-like elastic body is integrally vulcanized and bonded between the fixed portion and the outer cup. The lower end of the support is inserted into the opening of the fixed portion and screwed, and then the outer cup is grounded. It is fixed to concrete. Further, in the columnar structure described in Japanese Utility Model Publication No. 5-33543, a conical or trumpet-shaped base portion is provided at a central portion of a base to be attached to concrete on the ground, and a support for a safety fence is integrally erected on the base portion. Do it. The safety fence post is made of a rigid material, such as rubber or reinforced plastic, reinforced with steel pipe, piano wire or fibrous material. Further, the columnar structure described in Japanese Patent Application Laid-Open No. 9-316835 has a structure in which a foundation made of an elastic structure having a flexible portion formed in at least one direction is provided at a lower portion of a column.

[0004]

The above conventional columnar structure has the following problems. In other words, actual fairness 5-124
In the columnar structure described in JP-A-46-46, the fixing part and the support can be separated, and when one of them is damaged, the damaged part can be replaced. However, since the rubber-like elastic body surrounds the outer peripheral surface of the fixed portion, the thickness of the surrounding rubber-like elastic body must be increased in order to increase the inclination angle of the support when receiving a load. (Outer diameter) and height must be increased. Therefore, there is a problem that a mold at the time of molding becomes large. Further, the columnar structure described in Japanese Utility Model Publication No. 5-33543 is
Since the structure is such that rubber is adhered to the lower end of the column, a large mold is required in the processing step of vulcanizing the rubber, and if it is damaged, it is necessary to replace the entire columnar structure.

The columnar structure described in Japanese Patent Application Laid-Open No. 9-316835 can be used at a position where it is desired to incline against a load from a certain direction. If they are the same, actual fairness 5-1244
It depends on the thickness and height of the elastic structure, as in the columnar structure described in Japanese Unexamined Patent Application Publication No. 6-64. Furthermore, in any of the conventional columnar structures, since the rubber-like elastic body for providing a buffer function surrounds the lower end of the column, the outer diameter of the column lower end is larger than that of the column. There is a problem that it protrudes outward.

The present invention has been made in view of such a situation, and has an outer diameter substantially equal to that of a column, absorbs a large amount of impact energy when receiving a load, and is easy to manufacture and assemble. The present invention provides a movable columnar structure having excellent durability.

[0007]

The present invention has the following configuration to achieve the above object. That is, the movable columnar structure according to the present invention includes a columnar body having a bolt hole formed in a peripheral surface of a lower end portion, and a connecting plate provided substantially parallel to upper and lower surfaces of a rubber-like elastic body. An elastic base formed by projecting, a base body partially buried in concrete and having a bolt hole formed in an upper peripheral surface, and a column connecting the columnar body and the elastic base, and the elastic base and the base. The connecting member includes a bolt hole formed in a peripheral surface thereof, a female screw portion provided in the bolt hole, or a female screw portion having a center substantially the same as the center of the bolt hole formed on an inner surface. It consists of a cylinder and a connecting plate with a bolt hole. The upper and lower bolts of the elastic base are inserted into the bolt holes of the connecting plate and fixed to the female screw, and the short cylinder of the connecting member is fitted to the columnar body and the base body. And insert the bolt through the bolt hole on the peripheral Wherein the coupling is engaged. The base body may be formed by a bottomed cylindrical body, or may be formed by providing an anchor on a bottom plate of a short cylindrical body. Further, a side surface of the rubber-like elastic body forming the elastic base may be curved inward. Further, a flexible portion may be provided in a part of the rubber-like elastic body.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embodiment will be described below in detail. First, FIG. 1 shows a movable columnar structure showing a first embodiment.
Reference numerals 1 and 11A are connecting members, 12 is an elastic base, and 13 is a base body. The columnar body 10 has a closed upper surface, is formed of a pipe such as a steel pipe or stainless steel, and has a bolt hole 1 through which bolts are inserted at appropriate intervals in a lower peripheral surface.
4 are drilled. In the case of a steel pipe, the surface of the columnar body 10 is preferably subjected to an anticorrosion treatment. Further, the columnar body 10 may be formed of a rigid material such as rubber or plastic reinforced with piano wire or fiber.

The connecting member 11 comprises a short cylinder 15 having an outer diameter corresponding to the inner diameter of the column 10 and a connecting plate 17 abutting on the lower end surface of the column 10. A bolt hole 19 communicating with the bolt hole 14 is formed in a peripheral surface of the short cylinder 15, and the bolt hole 1 is formed in an inner surface of the short cylinder 15.
A nut 20 having a center substantially the same as 9 is fixed. The outer diameter of the connecting plate 17 is substantially the same as the outer diameter of the columnar body 10, and a bolt hole 21 penetrating in and out is formed (see FIG. 2).

The connecting member 11A has the same configuration as the connecting member 11, and is used with its upside down. Therefore,
About the connection member 11A, the same code | symbol as the connection member 11 is attached | subjected, and the description is abbreviate | omitted. When the connecting member 11 is used upward, the columnar body 10 and the elastic base 12 are connected, and when the connecting member 11A is used downward, the base body 13 and the elastic base 12 are connected.

The elastic base 12 is provided with connecting plates 25 and 27 substantially parallel to the upper and lower surfaces of a short cylindrical rubber-like elastic body 23, and the connecting plates 25 and 27 are provided with bolts 29, 30 are protruded. Therefore, the elastic base 1
2 is formed substantially symmetrically in the vertical direction. The connecting plates 25 and 27 have substantially the same size as the connecting plate 17. The rubber-like elastic body 23 is connected to the connection plates 25 and 27.
Although vulcanization molding may be performed in a state separated from the substrate and then integrally fixed with an adhesive, it is preferable to integrally fix with the connecting plates 25 and 27 in the step of integrally molding and vulcanizing with a mold. As shown in FIG. 4, the rubber-like elastic body 23 has a short columnar shape and is entirely formed of rubber having the same hardness, and the side surface is slightly curved inward to facilitate elastic deformation. It is formed as a vertical surface, instead of a curved surface.

Next, the base body 13 is a cylindrical body 3 having a bottom.
A bolt hole 33 is formed on the peripheral surface of the upper end portion of the connector 1 so as to match the bolt hole 19 of the connecting member. The cylindrical body 31
The connecting member 11A has a size having an inner diameter corresponding to the outer diameter of the short cylinder 15, so that the cylindrical body 31 and the columnar body 10 can be formed to have substantially the same outer diameter. In this embodiment, the base body 13 is formed of a cylindrical body 31 with a bottom, and the upper end is protruded and embedded in the concrete 35. Alternatively, concrete 35 may be filled.

FIG. 3 shows another embodiment of the base body. The base body 13A has a bottom plate 39 of a short cylindrical body 37 with a downwardly directed anchor 40 projecting therefrom, and a peripheral surface of the short cylindrical body 37. And a bolt hole 41 communicating with the bolt hole 19 of the connecting member 11A. The number, shape, and the like of the anchors 40 may be determined according to the use of the columnar structure.

FIG. 5 is a cross-sectional view showing another embodiment of the rubber-like elastic body 23, in which a flexible portion 23A is provided in a part, and when a load is applied to the columnar body 10 in a desired direction, the columnar body 23 is moved in that direction. This makes it possible to tilt more flexibly. FIG. 5 (a) shows a case where one half of the plane has a flexible portion 23A, and FIG. 5 (b) shows a case where about one third of the plane has a flexible portion 23A. When the flexible portion 23A is formed of rubber containing short fibers obtained by mixing rubber with natural fibers, metal fibers, or synthetic fibers, the hardness of the rubber is changed, or the amount of short fibers is reduced. When forming by laminating rubber and a woven fabric, it can be formed by a method such as reducing the number of laminated woven fabrics.

In order to assemble the movable columnar structure having the above configuration as shown in FIG. 6, first, the connecting members 11 and 11A are attached to the upper and lower surfaces of the elastic base 12. That is, first, the bolt 29 of the elastic base 12 is inserted into the bolt hole 21 of the connecting member 11 and firmly fixed by the nut 43, and the bolt 30 is inserted into the bolt hole 21 of the connecting member 11A and firmly secured by the nut 45. Fixed to. Next, the short cylinder 15 of the connecting member 11 is inserted from the lower surface of the columnar body 10 to insert the bolt hole 1.
4 is aligned with the bolt hole 19, the bolt 47 is inserted, and the nut 20 is screwed and fixed. In addition, concrete 3
The short column 15 of the connecting member 11A is inserted from the upper surface of the cylindrical body 31 of the
And the bolt hole 19 may be aligned, and the bolt 49 may be inserted and screwed into the nut 20 to fix. In this case, the nut 20 can be omitted by forming a female screw in the bolt hole 19.

In each of the above embodiments, the rubber-like elastic body 23 is formed in a short columnar shape. However, the present invention is not necessarily limited to this embodiment, and the cross-sectional shape can be any shape. , Oval, square, etc. As described above, by changing the cross-sectional shape, it is possible to provide a structure in which even if the hardness is uniform, the structure is inclined more flexibly in a specific direction.

Further, in the above embodiment, the columnar body 1
Although a structure for attaching a handrail member such as a wire rope or a chain as a safety fence to be attached to the fence 0 and a fence body as a protection fence is omitted, a known attachment at an appropriate position according to the use of the columnar body 10 is omitted. It is attached by providing metal fittings.

[0018]

As is apparent from the above description, since the movable columnar structure according to the present invention has a configuration in which the columnar members are stacked on the elastic base, a large load can be obtained by utilizing the compressive deformation of the rubber-like elastic member. Can be absorbed. Further, since the elastic base on which the columnar body is mounted is formed separately from the columnar body and is connected to the columnar body and the base body via the connecting member, molding is easy. Further, not only is the installation easy, but if any of them is damaged, only the damaged part can be replaced. In addition, the outer diameter of the elastic base can be substantially the same as the outer diameter of the columnar body, and the lower end of the columnar body does not expand outward.
Further, when a flexible portion is formed in a part of the rubber-like elastic body in the elastic base, the pillar can be more flexibly inclined only when a load is applied to the support in the desired direction.

[Brief description of the drawings]

FIG. 1 is an exploded sectional view of a movable columnar structure according to a first embodiment.

FIG. 2 is a plan view of a connecting member.

FIG. 3 is a cross-sectional view showing another embodiment of the base body.

FIG. 4 is a cross-sectional view of a rubber-like elastic body of an elastic base.

FIG. 5 is a cross-sectional view showing another embodiment of a rubber-like elastic body of an elastic base.

FIG. 6 is a front view showing an installation state.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Column-shaped body 11 Connecting member 12 Elastic base 13 Base body 14 Bolt hole 15 Short cylinder 17 Connecting plate 19 Bolt hole 20 Nut 21 Bolt hole 23 Rubber-like elastic body 25, 27 Connecting plate 29, 30 Bolt 31 Cylindrical body 33 Bolt hole 35 Concrete 37 Short cylindrical body 39 Bottom plate 40 Anchor 41 Bolt hole 43, 45 Nut 47, 49 Bolt

Continued on the front page (72) Inventor Keizo Suzuki 2-3-1 Nishi-Shinjuku, Shinjuku-ku, Tokyo F-term (reference) 2D101 CA13 DA04 DA05 DA06 EA01 FA13 FB02 FB03 GA13 GA18

Claims (5)

[Claims] A connecting plate provided substantially parallel to upper and lower surfaces of a rubber-like elastic body;
An elastic base formed by projecting bolts on the connecting plate; a base part partially buried in concrete and having a bolt hole formed in an upper peripheral surface; a columnar body and an elastic base; and an elastic base and an elastic base It comprises two connecting members for connecting the body and the connecting member, and the connecting member is provided with a bolt hole in the peripheral surface and a female screw portion is provided in the bolt hole, or the center is substantially the same as the center of the bolt hole on the inner surface. It consists of a short cylinder provided with a female screw and a connecting plate with a bolt hole, and the upper and lower bolts of the elastic base are inserted into the bolt holes of the connecting plate and fixed with nuts. A movable columnar structure, wherein the movable columnar structure is fitted into a base body, inserted into a bolt through a bolt hole on a peripheral surface, and screwed and connected to a female screw portion. 2. The movable columnar structure according to claim 1, wherein the base body is a bottomed cylindrical body. 3. The movable columnar structure according to claim 1, wherein said base body has an anchor provided on a bottom plate of a short cylindrical body. 4. The movable columnar structure according to claim 1, wherein a side surface of the rubber-like elastic body forming the elastic base is curved inward. 5. The rubber-like elastic body according to claim 1, wherein a flexible portion is provided on a part of the rubber-like elastic body.
Item 6. The movable columnar structure according to Item 1.