JPH041566B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an offset support device for laying electric cables and various other flexible elongated members at a laying location that expands and contracts.

``Prior art'' Generally, when constructing a large suspension bridge,
Separation spaces are provided at both ends of the bridge to absorb temperature changes, load changes, etc., and long members such as electric cables installed on this bridge can also absorb their own deformation and A known offset is provided to follow the bridge as it expands and contracts.

As a means for supporting such an offset, a method using a link structure is disclosed in Japanese Patent Publication No. 16013/1983, and its outline is that a plurality of link pieces are connected in a trapezoidal shape, and a wave-shaped offset is applied to each link piece. I said I would stop it and support it.

In the case of this prior art, since it is mainly based on trapezoidal links, the offset support structure is simple, and unauthorized deformation of the offset can be prevented by simply adding an auxiliary link, so it can be said to be highly practical.

By the way, in order to increase the amount of absorption of the aforementioned expansion, contraction, deformation, etc., it is necessary to increase the number of offset waveforms and the number of trapezoids of links that support them, but in such a case, a problem arises with the prior art.

This point will be briefly described below with reference to FIG.

In FIG. 3, numerals 1 and 2 are installation parts that utilize the front, back, side, etc. of a suspension bridge, and 3 is a separation space between the installation parts 1 and 2.

4 is a long member such as an electric cable, and 5 is a plurality of mutually continuous corrugated portions 6 in the long member 4.
A, 6B, and 6C, and 7 is a link having a plurality of trapezoidal portions 8A, 8B, and 8C to support the respective waveform portions 6A, 6B, and 6C of the offset 5, and the link 7 has a predetermined number of trapezoidal portions. The link pieces 9a to 9g and the terminal link pieces 10a and 10b are pivotally connected.

In FIG. 3, the link 7 arranged across both the installation parts 1 and 2 is connected to its terminal link pieces 10a and 1.
0b is pivotally connected to each of the installation parts 1 and 2, and the elongated member 4
The corrugated portions 6A to 6C of the offset 5 are fixed to the link pieces 9a to 9g of the trapezoidal link portions 8A to 8C, and the offset 5 is thus supported by the link 7.

When the aforementioned deformation, expansion and contraction occur while the offset 5 is being supported as described above, the trapezoidal portions 8A to 8C of the link 7 deform in the width and height directions, causing the corrugated portions 6A to 6C of the offset 5 to deform. However, if there is no means to evenly distribute the amount of deformation and expansion/contraction at this time, each trapezoidal portion 6A
-6C become uneven, and the amount of deformation and expansion/contraction absorbed by each of the waveform portions 6A-6C of the offset 5 becomes uneven.

Especially in the trapezoidal part of link 7, which is small in width and large in height,
The corrugated portion of the offset 5 is severely bent at each corner of the trapezoid, causing early fatigue of the offset 5.

Therefore, in the invention of Japanese Patent Publication No. 58-16013, a measure was taken to connect a pantograph-structured distributor to a link, but in this case, not only an auxiliary link was required, but also a pantograph-type distributor with a considerably complicated structure. A distributor must also be provided, and therefore, there is a need for an offset support means that can absorb the amount of deformation and expansion and contraction and evenly distribute it to each waveform portion of the offset with a simple structure.

``Problems to be Solved by the Invention'' In view of the above-mentioned problems, the present invention is a simple system that only requires a distribution mechanism equipped with a pulley and a tension cable, a tension machine, etc. to be installed on the link for supporting the offset. The object of the present invention is to provide an offset support device which can evenly distribute the amount of deformation and expansion and contraction described above to each waveform portion of the offset.

"Means for Solving the Problems" The present invention provides an arrangement in which an offset consisting of at least three or more corrugated parts of a long member is arranged over two relatively adjacent installation parts in the longitudinal direction with a separation space interposed therebetween, Each corrugated portion of the offset is fastened to each link piece of a link having trapezoidal portions facing in opposite directions, and both ends of the link are connected to a long length fixed to one laying portion and the other laying portion, respectively. In the offset support device for the length member, a guide rod having one end as a fixed end and the other end as a free end is arranged between the two laying parts, and the fixed end is fixed to one of the laying parts, and the free end is fixed to one of the laying parts. The top link piece, which is supported by the other laying part so as to be movable in the longitudinal direction of the guide rod and is located on the guide rod peripheral surface side in the link trapezoidal part, is not connected to the guide rod, except for the one at the fixed end of the guide rod. A distributing mechanism consisting of a pulley and a cable threaded around the pulley is installed between the sliding top link piece adjacent to each other and the free end side of the guide rod. It is characterized in that a tensioner is connected to the sliding type top link piece closest to the fixed end side.

``Function'' Since the present invention assumes a configuration in which the offset of the elongated member, that is, each corrugated portion is supported by each trapezoidal portion of the link, the two laid portions with a separation interval may expand and contract, or the elongated member may As is known, when the link is expanded and contracted in the longitudinal direction, each of the trapezoidal parts is deformed to become narrower and higher or wider and lower, and the entire link expands and contracts in the longitudinal direction of its installation part. The function based on the principle of a movable pulley and the function of a link mechanism are combined through a guide rod that supports the top link piece, a distribution mechanism consisting of a pulley and a cable, a tension machine, etc., so each trapezoid of the link is Therefore, each of the offset waveform parts supported by each trapezoidal part of the link above is deformed into approximately the same shape without being extremely deformed. The amount of expansion/contraction and deformation described above is absorbed almost uniformly.

"Embodiments" Next, embodiments of the present invention will be described with reference to the drawings.

In FIGS. 1 and 2, 11 and 12 are installation parts, 13 is a separation space between both installation parts 11 and 12, and 14
1 is a long member such as an electric cable, and 15 is a long member 1.
4, a plurality of mutually continuous waveform portions 16A~
16C, 17 is a link with a plurality of trapezoidal sections 18A-18C to support each corrugated section 16A-16C of the offset 15;
9a to 19i are link pieces of the link 17, and these have basically the same configuration as that described in FIG. 3.

As in FIG. 3, link pieces 19a and 19i located at the ends of the link 17 arranged across both the laying sections 11 and 12 are fixed to the respective laying sections 11 and 12, and the offset 15 of the elongated member 14 , the waveform portions 16A to 16C are the trapezoidal portions 18A to 1
It is fastened to each of the link pieces 19a to 19i of 8C.

The offset 15 is thus supported by the link 17, but in the case of FIGS. 1 and 2, each link piece 1
9a to 19i are connected to each other by pivoting means via pins, and these link pieces 19a
When fixing each of the corrugated parts 16A to 16C to 19i, for example, a spot pivot means using a ring-shaped stopper is used.

In the present invention, in the above, the guide rod 20 having one end as a fixed end and the other end as a free end is connected to both the installation parts 11 and 1.
2, and its fixed end is fixed to one laying part 11, and its free end is movable in the longitudinal direction of the guide rod.
Supported by

At this time, the fixed end of the guide rod 20 is connected to the link piece 19.
The free end of the guide rod 20 is provided with a rolling roller 21.

In each of the trapezoidal portions 18A to 18C, which are alternately oriented in opposite directions in the link 17, the link pieces 19a, 19
c, 19e, 19g, 19i are each trapezoidal portion 18A
~18C, of which two top link pieces 19e and 19i located on the peripheral surface side of the guide rod 20 are each formed with a fitting portion 22, and the fitting portion Top link piece 1 via 22
9e and 19i are slidably fitted to the guide rod 20.

A pulley (moving pulley) 23 is attached to one of the sliding type link pieces 19e for the top side, and a tensile strength cable 24 made of steel or stainless steel wire is routed around the pulley 23. Cable 2
One end of 4 is connected to the other sliding type top link piece 19i.
Then, the other ends of the cables 24 are fixed to the free ends of the guide rods 20, respectively.

In this case, the pulley 23 and the cable 24 constitute a predetermined distribution mechanism 25.

A tensioning machine 28 consisting of the same tensile strength tension rope 26 and a weight 27 as described above is connected to the sliding type top link piece 19e.

One end of the tension cable 26 is fixed to the link piece 19e, and the other end having a weight 27 is suspended downward via a pulley (static pulley) 29 attached to the link piece 19a.

In the apparatus of the present invention described above, both the laying parts 11, 1
When expansion and contraction occurs between the two, for example, when the laying part 2 moves (movement amount m) toward the laying part 1, each offset part of the elongated member 14, that is, each waveform part 16A.
Trapezoidal part 18 of link 17 supporting ~16C
A to 18C are deformed to be narrow and high at the separation interval 13.

At this time, since the top link piece 19i moves toward the laying part 11 side together with the laying part 12 using the guide rod 20 as a guide, the interval between the top link pieces 19e and 19i becomes narrower by an amount corresponding to the movement amount m. Become.

Along with this movement, the top link piece 19e receives the load of the weight 27 via the tension cable 26.
However, since the amount of movement m is divided into two by the pulley 23 and the cable 24,
The top link piece 19e moves toward the laying section 11 by 1/2 of the amount of movement m.

Therefore, when the dimensions of each part in the separation interval 13 are l1, l2, and 2l1 as shown in FIG. 17 trapezoidal parts 18A~
18C are deformed in the same shape as each other, thereby uniformly deforming the waveform portions 16A to 16C of the offset 15.

Since the amount of movement of the laying section 12 in the direction away from the laying section 11 is equally divided by the pulley 23 and the cable 24 as described above, the offset supported by each of the trapezoidal sections 18A to 18C of the link 17 1
The waveform portions 16A to 16C of No. 5 are equally deformed at this time as well.

Thus, the waveform portions 16A to 16C of the offset 15
is, without extreme deformation of only some of these,
Absorbs a predetermined amount of expansion/contraction and displacement.

Note that even when the number of waveform parts of the offset 15 is larger than shown in the figure and the link 17 has a trapezoidal part corresponding to the number of waveforms, each waveform part of the offset 15 is connected to each trapezoidal part of the link 17 in the same manner as described above. Spot-stopped.

At this time, a predetermined link piece for the top side is fitted with the guide rod 20 in the same manner as the link piece for the top side 19e described above, and the increased sliding type link piece for the top side is connected to the link piece for the top side. A pulley 23 and a cable 24 similar to those described in 19e and 19i are installed, and in this case, one end of the cable is attached to a sliding type link piece for the top.
The other end of the cable is fastened to a fixed frame or the like that projects from a fixed part such as the laying part 11.

In addition, the top side link pieces 19e, 19i are mutually fitted with the guide rod 20 via the fitting part 22, but a separately provided fitting member is attached to these top side link pieces 19e, 19i. It is also possible to attach it and perform a predetermined fitting.

As the tensioner 28, for example, one that utilizes the tension of a spring can be adopted.

``Effects of the Invention'' As explained above, the device of the present invention operates each trapezoidal part of the link via a guide rod that supports a predetermined top link piece, a distribution mechanism consisting of a pulley and a cable, a tension machine, etc. Therefore, when both the laid parts with a separation interval expand and contract, or when the elongated member expands and deforms in the longitudinal direction, each of the trapezoidal parts deforms in the same shape, and each offset waveform part deforms equally. In addition to satisfying the primary function of servicing, the above-mentioned components are all simple, so the configuration as an auxiliary mechanism is not bulky, and the device configuration is economical.The simple configuration reduces the incidence of failure. can be kept low.

[Brief explanation of drawings]

1 and 2 are a front view and a plan view of essential parts schematically showing one embodiment of the apparatus of the present invention, and FIG. 3 is a schematic illustration of a conventional example. 11, 12... Laying section, 13... Separation space, 1
4... Long member, 15... Offset, 16A~
16C...Waveform part, 17...Link, 18A~1
8C...Trapezoidal part, 19a-19d...Link piece,
19f to 19h...Link piece, 19e, 19i...
... Link piece (for top side, sliding type), 20 ... Guide rod, 22 ... Fitting part, 23 ... Pulley (for distribution mechanism), 24 ... Cable (for distribution mechanism), 25 ... Distribution mechanism, 26...Tension cable (for tension machine), 27... Weight (for tension machine), 28...Tension machine.

Claims (1)

[Claims] 1 At least three of the elongated members span two relatively adjacent installation parts in the longitudinal direction with a separation space in between.
An offset consisting of three or more waveform parts is arranged,
Each corrugated portion of the offset is fastened to each link piece of a link having trapezoidal portions facing in opposite directions, and both ends of the link are connected to a long length fixed to one laying portion and the other laying portion, respectively. In the offset support device for the length member, a guide rod having one end as a fixed end and the other end as a free end is arranged between the two laying parts, and the fixed end is fixed to one of the laying parts, and the free end is fixed to one of the laying parts. The top link piece, which is supported by the other laying part so as to be movable in the longitudinal direction of the guide rod and is located on the guide rod peripheral surface side in the link trapezoidal part, is not connected to the guide rod, except for the one at the fixed end of the guide rod. A distributing mechanism consisting of a pulley and a cable threaded around the pulley is installed between the sliding top link piece adjacent to each other and the free end side of the guide rod. 1. An offset support device for an elongated member, characterized in that a tensioning machine is connected to the sliding type top link piece closest to the fixed end side.