JP2009085602A - Indicating device of amount of displacement of coupling implement - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an indicating device of the amount of displacement of a coupling implement which can accurately indicate the amount of relative deformation on the occasion when coupling parts are brought to relative mutual separation displacement. <P>SOLUTION: The indicating device 10 consists of a tubular body 1 attached to one of the coupling parts 22 and 23 and a string-shaped body 2 with a rubber layer which is fixed to the other of the coupling parts 22 and 23 at the base end and passes through the hollow part of the tubular body 1. The inside diameter of the tubular body 1 is made smaller than the outside diameter of the string-shaped body 2 with the rubber layer. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention has both end portions and connects each of a pair of objects to be connected by connecting portions provided at the both end portions, and the relative approach displacement of the connecting portions and a relative separation of a predetermined amount or less. The present invention relates to a device for displaying the relative displacement amount between the connecting portions of a connecting device that connects the objects to be connected under a condition that allows displacement, and more particularly, to a device that can accurately display the relative deformation amount. .

  The piers, abutments, bridge girders and the like constituting the fixed structure such as a bridge are connected to the ground or to each other using a connection structure such as a so-called rubber bearing or rubber-coated chain. By adopting such a connection structure, for example, even when an earthquake or the like occurs, the energy of this relative movement is absorbed by the deformation of the rubber (elastic member) to prevent the fixed structure from dropping or the like. Can do.

  By the way, in such a connector that is elastically deformed, for example, after a large earthquake, the shape is restored to the one before the deformation despite the large deformation, and no change in the shape is recognized. For this reason, it was difficult to recognize the degree of deformation by appearance. Therefore, for example, it is difficult to easily know whether or not the deformation amount of each connecting structure is within the allowable range (in other words, whether the deformation exceeds the allowable range). It was also difficult to determine whether the connection structure needs to be replaced. In particular, when the above connection structure is adopted as a bridge prevention device that prevents the fall of a bridge girder as an example, the fall bridge prevention device is often installed in a narrow space at the upper end of the bridge pier, so that individual fall bridges are visually observed. It was difficult to determine whether the prevention device needs to be replaced.

As a countermeasure against such a problem, as shown in FIG. 1, the adjustment rings provided at the connection portions 21 and 22 with the connection target objects disposed at both ends of the connection tool 20 are fixed points 23 a and 23 b, respectively. A linear flexible member 91 fixed to one of the fixing points 23a, a holding member 92 attached to the other fixing point 23b and capable of partially holding the flexible member 91, and fixing these The relative movement of the flexible member 91 with respect to the holding member 92 due to the mutual displacement of the points 23a and 23b is allowed, and the relative movement of the flexible member 91 with respect to the holding member 82 due to the mutual displacement of the fixing points 23a and 23b. For example, a rope made of an organic fiber is used as such a flexible member 91 and a holding member 92 is used as a holding member 92. 1 (a) as an initial state by using a metal fitting having a hole through which the rope passes and keeping the outer diameter of the rope slightly thicker than the inner diameter of the hole so that the rope cannot be moved relative to the hole only by its own weight. When the fixed points 23a and 23b set as shown in FIG. 1 are separated from each other, the rope hardly stretches, so that the rope and the hole are relatively displaced as shown in FIG. When the fixing points 23a and 23b are displaced close to each other, as shown in FIG. 1 (c), the rope is slackened, and the hole is only pulled by its own weight, so this relative displacement is limited. You can do that.
JP 2002-267404 A

  However, the rope which is the flexible member 91 is only held by the frictional force in the hole of the holding member 92, and if this frictional force is reduced, the holding member 92 displaces the flexible member 91. It is difficult to hold in a period other than that, and if this frictional force increases, the rope cannot slide in the hole when they are displaced at a distance, and the rope may break.

  The present invention has been made in view of such problems, and a displacement amount display device for a connector that can accurately display a history of relative deformation amounts when the connecting portions are displaced relative to each other. The purpose is to provide.

The invention described in claim 1 has both end portions and connects each of the pair of objects to be connected by connecting portions provided at the both end portions. In a device for displaying the relative displacement amount between the coupling parts of the coupling device that couples the coupling objects under a condition that allows relative separation displacement below a fixed amount,
An outer peripheral surface of the string-shaped body, which is configured by a cylindrical body attached to one of the coupling parts, and a string-like body whose base end is fixed to the other of the coupling parts and penetrates the hollow part of the cylindrical body. In addition, a displacement amount display device for a connector is provided, in which a rubber layer is provided and an inner diameter of a cylindrical body is made smaller than an outer diameter of the rubber layer.

The invention described in claim 2 is the invention described in claim 1, having both end portions, connecting each of the pair of connecting objects at connecting portions provided in each of the both end portions, and In the device for displaying the relative displacement amount between the connecting portions of the connecting device for connecting the connecting objects under the condition of allowing the relative approaching displacement and the relative separation displacement of a predetermined amount or less of the connecting portion,
A cylindrical body attached to one of the connecting parts, and a string-like body having a base end fixed to the other of the connecting parts and penetrating through the hollow part of the cylindrical body, and the inner side of the cylindrical body And a rubber layer, and a rubber layer having an inner diameter smaller than an outer diameter of the string-like body.

  A third aspect of the present invention is the displacement amount display device for a connector according to the first or second aspect, wherein the string-like body is made of an aramid fiber.

  A fourth aspect of the present invention is the displacement amount display device according to any one of the first to third aspects, wherein the cylindrical body is attached to one of the connecting portions via a rope.

  According to the first aspect of the present invention, the tubular body attached to one of the connecting portions and the string-like body having a base end fixed to the other of the connecting portions and penetrating through the hollow portion of the tubular body. And the rubber layer is provided on the outer peripheral surface of the string-like body, and the inner diameter of the cylindrical body is made smaller than the outer diameter of the rubber layer. The string-like body with the rubber layer is not relatively displaced with respect to the cylindrical body due to the strong frictional force caused by the compressed rubber layer. On the other hand, when the connecting portion is displaced relatively away, The string-like body is pulled with a strong force against the strong frictional force of the rubber layer. At this time, the string-like body is made of a material having a high tensile strength at break without breaking the string-like body. The layered string-like body and the tubular body can be relatively displaced, and therefore rubber By being displayed a relative displacement amount between the biasing string-like body and the tubular body, also the distance of the connecting portion mutually back to the original initial state, it is possible to accurately display the deformation history.

  According to the second aspect of the present invention, the tubular body attached to one of the connecting portions, and the string-like body having a base end fixed to the other of the connecting portions and penetrating through the hollow portion of the tubular body. And providing a rubber layer on the inside of the cylindrical body, and the inner diameter of the rubber layer is smaller than the outer diameter of the string-like body, so even if the distance between the connecting portions returns to the original initial state, The deformation history can be accurately displayed.

  According to invention of Claim 3, since the said string-like body was comprised with the aramid fiber, even when a connection part carries out relative separation displacement, a string-like body is not cut | disconnected.

  According to invention of Claim 4, since the said cylindrical body was attached to one side of the said connection part via a rope, the position of a cylindrical body can be set freely.

A first embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a front view showing the displacement amount display device of this embodiment in a state of attachment to the coupler in the initial state, and the displacement amount display device 10 connects a pair of connection objects composed of, for example, a bridge girder and a bridge pier. In the one of the adjustment rings 23a and 23b integrally fixed to the connecting portions 21 and 22 (in the illustrated case, both ends of the chain) of the connecting tool 20 connected to each of these connection objects, Directly or as shown in the figure, the tubular body 1 attached indirectly via the rope 3 and the base end are attached to the other adjustment ring 23b and penetrate the hollow portion of the tubular body 1 The cord-like body 2 with the rubber layer is provided.
The adjustment ring 23a, 23b the spacing between each other in the initial state is X _1. Moreover, the front-end | tip of the string-like body 2 with a rubber layer is made into a free end.

  The connector 20 is configured to allow a relative approaching displacement between the connecting portions 21 and 22 and a relative separation displacement of a predetermined amount or less, thereby receiving deformation due to an earthquake or the like and transferring the energy thereof. Can be absorbed. However, even if the distance between the connecting portions 21 and 22 is the same as the initial state, if the displacement of the connecting portions 21 and 22 away from each other is a predetermined amount or more as a past deformation history, There is a possibility that at least a part of the connecting tool is broken or just before it is broken, and the displacement amount display device 10 makes it easy to check at a glance how much deformation has occurred in the past. Is the purpose.

FIG. 3 is a cross-sectional view showing the cylindrical body 1 and the string member 2 with a rubber layer penetrating through the hollow portion. The string member 2 with a rubber layer has a rubber layer 5 on the outside of the string member 4. coated formed, the outer diameter D ₁ of the attached rubber layer string-like body 2 is greater than the inner diameter D ₂ of the tube 1, the portion with the rubber layer string-like body 2 penetrates the tubular body 1, a rubber The layers are compressed and thinned by the difference, so that the cylindrical body 1 and the string-like body 2 with the rubber layer cannot be moved relative to each other with a slight force. ing.

FIG. 4 shows the displacement amount display device 10 configured as described above in a state in which the distance between the connecting portions 21 and 22 is widened from X ₁ to X _{2 due} to an earthquake or the like. In this state, the rubber layer The attached string-like body 2 is pulled with a strong force against the strong frictional force of the rubber layer 5. At this time, the string-like body 4 is broken by forming the string-like body 4 with a material having a high breaking strength. The string-like body with rubber layer 2 and the cylindrical body 1 can be relatively displaced without causing them, and therefore, for example, by forming a scale on the string-like body with rubber layer 2, The relative displacement amount between the body 2 and the cylindrical body 1 can be known. This means that even when the distance between the connecting portions 21 and 22 returns to the original initial state, the relative approaching displacement between the connecting portions 21 and 22 can be determined. Since the cord-like body 2 with the rubber layer and the tubular body 1 are not relatively displaced, It is possible to accurately display the shape history.

  Here, as the string-like body 4, for example, by using an aramid fiber or the like, the rubber layer and the tubular body 1 can be provided with a strength higher than a strong frictional force, and the coupling portions 21 and 22 can be relatively separated. There is no cutting against displacement.

FIG. 5: is sectional drawing which shows the string-like body 2 which penetrates the hollow part of the cylindrical body 1 about 2nd embodiment of the connector displacement amount display apparatus which concerns on this invention, and the inner periphery of the cylindrical body 1 The rubber layer 6 is adhered to the surface by an adhesive or the like, and the string-like body 4 is formed of the rubber layer 5 in a state where the distance between the connecting portions 21 and 22 is expanded from X ₁ to X ₂ due to an earthquake or the like. The inner side is pulled with a strong force against the strong frictional force and moves relative to the rubber layer 5, that is, relative to the cylindrical body 7 with the rubber layer.

However, in the state shown in FIG. 5, the rubber layer 6 has an inner diameter d ₁ in a natural state in which the string-like body 4 does not penetrate the inner side thereof, which is smaller than the outer diameter d ₂ of the string-like body 4. In addition to the fact that it has a high coefficient of friction, even if a small force is applied to the string-like body 4 by itself being compressed and tightening the string-like body 4, these relative displacements Will not cause.

It is a front view which shows the displacement amount display apparatus of the conventional connector. It is a front view which shows the displacement amount display apparatus of the coupling tool of 1st embodiment which concerns on this invention in the initial state. It is sectional drawing which shows the string-like body with a rubber | gum which penetrates the hollow part of a cylindrical body. It is sectional drawing which shows the displacement amount display apparatus of the connector of 1st embodiment which concerns on this invention. It is sectional drawing which shows the string-like body which penetrates the inner side of a rubber layer.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cylindrical body 2 String-like body with rubber layer 3 Rope 4 String-like body 5, 6 Rubber layer 7 Cylindrical body with rubber layer 10 Displacement amount display device of connecting tool 20 Connecting tool 21, 22 Connecting part 23a, 23b Adjustment ring

Claims (4)

It has both end portions, and each of the pair of objects to be connected is connected by connecting portions provided at the both end portions, and the relative approaching displacement and the relative separation displacement of a predetermined amount or less of those connecting portions are allowed. In a device for displaying the relative displacement amount between the connecting parts of the connecting tool for connecting the connecting objects under the condition of
An outer peripheral surface of the string-shaped body, which is configured by a cylindrical body attached to one of the coupling parts, and a string-like body whose base end is fixed to the other of the coupling parts and penetrates the hollow part of the cylindrical body. A displacement amount display device for a connector, wherein a rubber layer is provided on the cylindrical body, and an inner diameter of the cylindrical body is made smaller than an outer diameter of the rubber layer. It has both end portions, and each of the pair of objects to be connected is connected by connecting portions provided at the both end portions, and the relative approaching displacement and the relative separation displacement of a predetermined amount or less of those connecting portions are allowed. In a device for displaying the relative displacement amount between the connecting parts of the connecting tool for connecting the connecting objects under the condition of
A cylindrical body attached to one of the connecting parts, and a string-like body having a base end fixed to the other of the connecting parts and penetrating through the hollow part of the cylindrical body, and the inner side of the cylindrical body A displacement amount display device for a connector, wherein the rubber layer is provided with a rubber layer and the inner diameter of the rubber layer is smaller than the outer diameter of the string-like body.   The displacement amount display device for a connector according to claim 1 or 2, wherein the string-like body is made of an aramid fiber.   The displacement amount display device according to any one of claims 1 to 3, wherein the cylindrical body is attached to one of the connecting portions via a rope.

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