JP2761708B2 - Cable movement prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a technique for preventing movement of a cable laid in a pipeline, and more particularly to a technology for preventing a cable laid in a pipeline buried underground from an external environmental factor, that is, a vehicle. The present invention relates to a cable movement preventing device for preventing a phenomenon of moving in any one direction due to a driving force continuously applied in a specific direction due to traffic.

[0002] The phenomenon that a cable moves in a pipe is a phenomenon that vibrations usually generated from a vehicle are transmitted to an underground pipe, and at the same time, a large force is not transmitted to the cable. By continuously transmitting the driving force applied by traveling to the pipeline, the movement of the cable laid in the pipeline is induced. This is because while the position of the pipeline buried underground is fixedly maintained, the ground where the pipeline is buried becomes a specific lane on the lane, so the direction of vehicles traveling on the ground on the pipeline is only a certain direction By going to.

As described above, since the direction of the vehicle moving on the ground on the pipeline continues in only one direction, the force applied by each vehicle to the underground pipeline is small for a long period of time. When the force is accumulated, it appears as a considerable force. Such a force results in the movement of the cable, at which time the force applied to the cable is typically known as of the order of a few tons.

[0004] As described above, the moving force applied to the cable is not limited to a specific portion of the cable, but has a characteristic of being uniformly applied over the entire length of the cable due to the generated characteristic. This causes the cable to move together as a whole according to its length.

[0005]

2. Description of the Related Art In order to prevent such cable movement, in the prior art, a cable movement prevention device is provided at the entrance end of a pipeline to prevent the cable from being drawn into the pipeline. Attempts have been made to prevent road movement.

[0006]

However, such a solution according to the prior art is disadvantageous in that, as the cable is fixed at the entrance end, an excessive tensile force is generated at the fixing portion due to the moving force of the remaining portion, and the fixing is satisfactory. In order to obtain the effect, it is necessary to maintain the fixing force at the fixing portion at a considerable level. If an excessive tensile force is applied to the cable at the fixed part, the conductor located inside the cable is a fine conductor with a relatively small diameter, which increases the risk of short-circuiting.This is a fatal defect when installing the cable. It is a point that should always be avoided. Also, if a fixing force of a magnitude corresponding to the cable is applied at the fixing portion of the cable, this may also act as a factor that hinders the normal function of the cable. You can't get it.

The present invention has been devised to solve the above-mentioned problems in the prior art, and can prevent the cable from moving even with a relatively small force, and can apply a longitudinal tensile force to the cable. When viewed from the moving direction of the cable, it can be provided on the outlet side of the conduit so that a non-vertical compressive force is generated, and an effective fixing effect can be obtained even when the diameter of the cable is different. The purpose of the present invention is to provide a fixing device capable of adjusting a fixing interval so as to be able to do so.

[0008]

In order to achieve the object of the present invention as described above, in one embodiment of the present invention, a tube is provided.
The length of the cable running in the pipe is
Cable movement prevention device that is fixed so that it does not move
In, a projecting fixing member having a sharp tip to prevent relative movement with the pipeline with strong frictional contact with the inner surface of the pipeline, and a bearing member that bears the fixing member,
When the fixing member moves in the diameter direction of the cable with respect to the inner surface of the conduit, a guide member that guides the moving state, and a pressing force is applied to the bearing member in the diameter direction of the conduit,
An adjustable pressing member that allows the fixing member to be fixed to the inner side surface of the pipeline.
By applying a pressing force in the diameter direction to the cable
To prevent relative movement between pipeline and cable.
A cable movement prevention device is provided. The cable movement prevention device is suitably configured to be inserted between a cable and a pipeline, and is configured to facilitate installation and separation operations.

According to a particular aspect of the invention, the adjustable pressing member is located at a number of cross-link members, at the intersection of these cross-link members, at least one of which is provided with a pressing member therein. The length of the cable in the diameter direction is obtained by receiving a slide member having a threaded passage in the vertical direction, the slide member, etc., extending in the vertical direction of the pressing member, and expanding and contracting the length of the pressing member by rotation thereof. And an adjusting member capable of applying a pressing force to the supporting member.

[0010]

The cable movement preventing device constructed as described above applies a compressive force, not a tensile force, to the fixed portion of the cable, and variably adjusts the pressing member so as to be applicable to cables having different diameters. Such a feature of the present invention is that the holding member is moved by using the pressing member so that the fixing member located on the holding member is fixed to the inner surface of the conduit. Made up of

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the accompanying drawings.

FIG. 1 is a perspective view showing a state in which a cable (8) is fixed in a conduit (10) using an insertion-type cable movement preventing device (9) according to an embodiment of the present invention, which can be seen in FIG. Cable (8) fixed in conduit (10)
Are wrapped by the cable support member (7), and maintain a fixed position with respect to the guide plate (1) for guiding the fixing member (5). In the present embodiment, the fixing member (5) is formed in a conical shape. When the pressing force is applied by the cross link member as described later, the fixing member (5) bites into the inner surface of the pipe (10), and the cable movement preventing device (9). ) The whole pipe (10)
To be unable to move.

In the embodiment described in the present specification, the fixing member (5) is formed in a conical shape. However, when the fixing member (5) is bitten into the conduit, the position between the conduit (10) and the cable movement preventing device (9) is reduced. Any shape may be used as long as the shape can prevent the relative movement of the object, for example, a hook shape curved in one direction. Since the guide plate (1) is provided with the guide hole (3) through which the fixing member (5) can protrude as shown in the figure, the fixing member (5) can move forward and backward through the guide plate (1). ing.

FIG. 2 is an exploded perspective view of the cable movement preventing device (9) shown in FIG. As can be seen in detail in FIG. 2, the fixing member (5) is located on the carrying member (4) and is actuated by the pressing member (6).
As the pipe moves, the pipe (1) passes through the upper surface of the guide plate (1) through a guide hole (3) formed on the guide plate (1).
0) is fixed to the inner surface. As shown, the pressing member (6) is located between the cable supporting member (7) and the carrying member (4), and when adjusted by the adjusting member as described later, the fixing member (5) moves the guide member (5). It presses against the inner surface of the conduit (10) through the guide hole (3) of 1).

Since the shape of the cable supporting member (7) is such that the cable (8) is wrapped around the cable (8), the force applied by the pressing member (6) is such that a uniform compressive force is applied to the cable (8). Thus, the conductor located inside the cable (8) is not damaged at all. However, the force applied to the fixing member (5) via the support member (4) is very small since the end area of the fixing member (5) is much smaller than the end area of the cable supporting member (7). As a result, even if a slight compressive force is applied to the fixing member (5), a compressive force is applied to the fixing member (5) such that the fixing member (5) can bite into the inner surface of the pipe (10) to a certain depth.

The reason for providing the cable support member (7) is as follows.
Usually, the surface of the cable (8) is often made of a relatively brittle metal, so that the cable (8) may be damaged when the pressing member (6) is compressed.
The adapter (2) indicated by the reference numeral (2) in FIG. 2 is inserted into the flange (12) at the end of the guide plate (1), and has a function of reinforcing the end of the guide plate (1). Fulfill. Although the adapter (2) has been described as performing a function of reinforcing the end of the guide plate (1) in the present embodiment, this is the same as the guide plate (1).
In some cases, the space between the cable support member (7) and the cable support member (7) is closed so that a function of preventing impurities from entering the press member (6) can be performed.

FIG. 3 is a cross-sectional view showing a state in which the cable movement preventing device (9) is provided in the conduit (10). As can be seen in the drawing, the conduit (10) is fixedly provided on a structure (11), usually a concrete mass. As already mentioned herein, the place where the structure (11) is provided is usually under the road, so that vehicles operating on the ground can be transported through the structure (11) through the pipeline (10) and A continuous force acts on the cable (8). As a result, the force for moving the cable (8) in one direction is continuously applied to the cable (8) as described above.

As can be seen from FIG. 3, the length of the fixing member (5) is longer than the thickness of the guide plate (1), so that the pressing member (6) is completely contracted and the width in the radial direction of the pipe increases. By doing so, the fixing member (5) is pressed against the inner surface of the conduit (10) via the outer surface of the guide plate (1).
In this embodiment, since the shape of the fixing member (5) is conical, when the pressing member (6) contracts and the width in the pipe radial direction increases, the fixing member (5) becomes the pipe (10). It will penetrate to some extent into the inner surface of the tire, and will play a role in maximizing the frictional force.

FIG. 4 is an enlarged sectional view showing the structure of the pressing member (6) in detail. As can be seen in the drawing, the pressing member (6) is composed of a plurality of cross-link members (13) connected in a scissor shape.
It becomes. One end of each of the cross link members (13) is connected to one of the slide members (6d, 6g, 6f, 6e), and the other end is connected to the upper and lower joints (6b, 6c). Linked to one. Therefore, each of these link members and the like constitutes a scissor-type closed loop over the entire pressing member (6) between the slide member (6d, 6g, 6f, 6e) and the upper and lower joints (6b, 6c). Become. As you can see in the drawing,
The upper joint (6b) and the like come into contact with the bottom surface of the support member (4), and the lower joint (6c) comes into contact with the upper surface of the cable support member (7). Carrying member (4)
Is pressed by the upper and lower joints (6b, 6c) in a direction away from the cable support member (7).

Therefore, the joints (6b, 6c) and the like are preferably made of a material having a certain rigidity. The other end of the link member (13) or the like is fixed to the slide members (6d, 6g, 6f, 6e) and the like as shown in the figure, and these slide members and the like are moved in the longitudinal direction of the pressing member (6). Extending adjustment rod (1
4) passes. Screws are formed on the entire or specific part of the adjusting rod (14) and slide members (6d, 6g, 6f, 6e)
All or at least both ends of the slide members (6b, 6e) are formed with screw holes through which the adjustment rod can advance, and the adjustment rod (1) is rotated by rotating the adjustment rod (14).
4) The sliding movement is performed to adjust the expansion and contraction of the pressing member (6).

That is, for example, the outer end of the adjusting rod (14), that is, the knob (6a) provided in the direction in which the cable (8) is exposed from the conduit (10) is rotated in one direction, and the slide member is rotated. If (6d, 6e) are to be moved on the adjusting rod (14) in a direction approaching each other as shown in the drawing, the link members (13) and the like move in the mutually converging direction, and the upper and lower joints are moved. (6b, 6c) will be moved up and down.
As a result, the support member (4) moves upward, and the fixing member (5) located on the surface thereof is fixed to the inner surface of the pipe (10) via the guide plate (1). A screw hole corresponding to the screw formed on the adjusting rod (14) can be formed in all the slide members (6d, 6g, 6f, 6e), and a screw hole is formed only in the slide members (6d, 6g) at both ends. What can be done is the same as described above. The upper and lower joints (6b, 6c) preferably have some lubricating properties so that they can move smoothly on the inner surface of the support member (4) and the outer surface of the cable support member (7).

Next, the use state of the cable movement preventing device (9) according to the embodiment of the present invention will be described. First, after the cable support member (7) is positioned at one end of the cable (8), the pressing member (6) is positioned thereon. The support member (4) is positioned at a position on the upper joint (6b) of the pressing member (6), and the guide plate (1) is positioned according to the position of the fixing member (5) on the support member (4). . At this time, the folded state of the pressing member (6) is adjusted so that the fixing member (5) does not protrude from the surface of the guide plate (1). After the cable movement preventing device (9) thus combined is moved into the conduit (10) and appropriately positioned, the knob (6a) of the adjusting rod (14) of the pressing member (6) is then moved.
Is rotated so that the link members (13) and the like of the pressing member (6) are moved so as to be mutually converged, so that the support member (4) is moved upward, that is, outward in the diameter direction of the cable (8). I do.

By such a movement, the fixing member (5) is fixed to the inner surface of the pipe (10) with an appropriate pressure, and the cable (8) is moved in the pipe (10) in its length direction. When the condition is sufficient to prevent the adjustment, the adjustment using the adjustment rod is interrupted. Thus, the cable (8) is connected to the conduit (1
If the driving force is applied to the cable (8) as described above, the cable is prevented from moving at the exit end by the cable movement prevention device (9). As a result, the cable (8) is
The position can be maintained within 0).
In FIG. 2, the cable movement prevention device (9) is connected to the cable (8).
Although it is shown that the cable movement preventing device is provided on both sides diametrically opposed to each other, if one of the cable movement preventing devices determines the position using a wedge member or a filler, only one of the cable movement preventing devices according to the present invention is provided. The device (9) can also be used.

[0024]

According to the present invention, the cable movement prevention device (9) is provided at the end of the cable (8) in the direction in which the cable (8) is pulled out from the conduit (10) to fix the leading end of the cable (8). In (8), unlike the prior art, a tensile force is not applied and a compressive force is applied. This greatly reduces the likelihood of breakage of the conductor that will be located in the cable (8) compared to the prior art.
However, the cable movement prevention device (9) is different from the cable (8).
Of course, it is also possible to provide the trailing end of the cable (8) at the end where the cable (8) is drawn in the conduit (10). Further, the cable movement prevention device according to the present invention can variably adjust the folded state of the pressing member (6), so that an efficient fixed state can be obtained even when the diameter of the cable (8) is different. Become like

As described above, the preferred embodiments of the present invention have been described with reference to the accompanying drawings. However, modifications may be made by those skilled in the art without departing from the scope of the present invention defined by the appended claims. It goes without saying that changed matters also belong to the scope of the present invention.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a cable movement prevention device according to an embodiment of the present invention is attached to a cable.

FIG. 2 is an exploded perspective view of the insertion-type cable movement prevention device shown in FIG.

FIG. 3 is a cross-sectional view showing a state in which the insertion-type cable movement prevention device shown in FIG. 1 is provided in a pipeline.

FIG. 4 is an enlarged vertical sectional view showing a configuration of a pressing member of the insertion-type cable movement prevention device of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 guide plate 2 adapter 3 guide hole 4 support member 5 fixing member 6 pressing member 6a knob 6b, 6c joint 6d, 6e, 6f, 6g slide member 7 cable support member 8 cable 9 cable movement prevention device 10 conduit 11 structure Object 12 Flange 13 Link member 14 Adjusting rod

Claims (6)

(57) [Claims] A cable movement prevention device for fixing a cable laid in a pipeline so as not to move in the lengthwise direction of the pipeline, wherein the pipe has a strong frictional contact with an inner surface of the pipeline. A protruding fixing member having a sharp tip to prevent relative movement with a road, a support member for supporting the fixing member, and the fixing member moving in a diameter direction of the cable with respect to an inner side surface of the conduit. The guide member for guiding the moving state, and the bearing member, relative to the diameter direction of the pipeline.
An adjustable pressing member that applies a pressing force and allows the fixing member to be fixed to the inner surface of the pipeline ,
The pressing member applies a pressing force to the cable in the diameter direction.
To prevent relative movement between pipeline and cable
A cable movement prevention device, characterized in that the cable movement prevention device is configured to: And wherein said adjustable pressing member, the support member is interposed between the cable located conduit, when the pressing force is applied by the pressing member, the support member
, While protecting the cable, pressing of the pressing member
The cable movement prevention device according to claim 1, wherein the cable movement prevention device is configured to apply a pressing force to the cable under a force . 3. The cable movement preventing device according to claim 1, wherein the fixing member is located at a leading end in a moving direction of the cable. 4. The fixing member according to claim 1, wherein the fixing member has a conical tip, and when pressed by the pressing member, bites into the inner surface of the conduit to a certain depth to maximize the frictional force. Item 2. The cable movement prevention device according to Item 1. 5. The pressing member has a plurality of link members, one ends of the link members and the like fixed, and a plurality of slide members that move in a vertical direction, and other ends of the link members and the like fixed. A plurality of upper and lower joints that come into contact with the support member and the cable support member and apply a pressing force thereto, and extend through the slide member and the like. The cable movement preventing device according to claim 1, wherein the cable movement preventing device is configured to have an adjusting rod having the cable. 6. A screw is formed on the whole or a part of the adjustment rod, and a screw hole corresponding to a screw of the adjustment rod is formed on at least both of the slide members. The cable movement preventing device according to claim 1 or 4, wherein: