JPH0365092B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for laying cables such as control cables and instrumentation cables in trays in various industrial plants, power generation plants, and the like.

[Conventional technology]

Conventional cable laying equipment is shown in Figures 11 and 1.
Figure 2 will be explained. Note that FIG. 11 is a perspective view of a portion of a conventional cable laying device, and FIG. 12 is a front view of a cable laying guide device used in the conventional cable laying device. 1A, 1B, 1C in the figure
are trays for accommodating cables, for example, the upper tray 1A contains power cables,
The middle tray 1B has an instrumentation cable, and the lower tray 1
A control cable is installed at C. 2 are pillars supporting the trays 1A to 1C; 3A, 3B, 3;
C is a beam, and 4 is a cable laying guide device suspended between a beam 3A of the upper tray 1A and a beam 3B of the middle tray 1B. This guide device is the 12th
As shown in the figure, a frame 401 is open at the front and rear when viewed in the cable pulling direction, a pair of side guide rollers 402 and 403 are rotatably provided in a substantially vertical direction on both sides of the frame, and the bottom rotates upward. The cable to be laid (not shown) has a bottom guide roller 404 provided approximately horizontally and across the width of the frame 401, and an upper guide roller 405 rotatably provided below the top. It is supported on guide rollers 404, and displacement of the cable in the frame width direction is regulated by side guide rollers 402 and 403. A bearing 406 at the upper end of one side guide roller 403 is pivotally connected to the frame 401 with a pin 407.
The lower end of the shaft 408 of 03 is inserted into a notch 409 formed in the frame 401, and the lower end is removably fixed to the frame 401 with a nut 410. Thus, the side guide rollers 403 move the pin 40 when the nut 410 is loosened or removed.
7 in the front in FIG. 12. Furthermore, when the side guide rollers 403 are pivoted in this manner, the frame 401 allows the cables to be routed to the tray 1B or 1C.
An opening 411 is provided for the upper part. 4
Reference numeral 12 indicates a mounting portion for removably fixing the guide device 4 to the beams 3A and 3B, and reference numeral 413 indicates a side guide roller 40.
2 upper end bearing, 414 side guide roller 402
415 is the axis of the bottom guide roller 404, 415 is the axis of the bottom guide roller 404;
16 is the axis of the top guide roller 405.

In order to lay a cable using this guide device 4, a scaffold is constructed along the trays 1A to 1C, and a large number of guide devices 4 are installed on the beams 3A and 3A of the trays 1A and 1B.
3B as shown in FIG. 11, and the cable wound around a cable drum (not shown) is pulled out and manually passed through a series of guide devices 4 one after another.

However, in general, the spacing between the trays is narrow and it is extremely difficult to pull out the cable from the cable drum and insert it through the series of guide devices 4. Moreover, the trays 1A to 1C are generally located at a high place, such as several meters above the floor. The work of pulling cables with great force on such high scaffolding is extremely dangerous. In addition, scaffolding cannot be assembled continuously because it is obstructed by room partition walls or protruding pillars, and for example, if the length of the tray is 100 meters, there will be about 10 middle stages. In that case, at least one worker is required for each scaffold, which not only requires a large number of workers overall, but also requires the end of the cable to be sent to each worker. Until then, the workers were just playing around, and there were problems such as extremely low efficiency.

To solve this problem, it was proposed in Japanese Patent Application No. 59-265849 (Japanese Unexamined Patent Publication No. 142911-1982) to pull the cable with a traction wire. This cable laying device is shown in FIGS. 13 and 14.
FIG. 13 is a perspective view generally showing the cable laying device, and FIG. 14 is an enlarged side view of the device for connecting the cable to the traction wire. In the figure, reference numeral 5 indicates an endless traction wire 7A, 7B guided by a guide pulley 6 through the trays 1B and 1C.
are all cables that should be laid inside tray 1C,
8A and 8B are cables to be laid in the tray 1B, respectively. It should be noted that the trays 1B and 1C are illustrated with a larger distance in the vertical direction to make the drawing easier to see. Reference numeral 9 denotes a power device for driving the traction wire 5, for example, a winch is used, and a load cell 10 is attached to this winch. 11A,1
1B, 12A, 12B are cables 7A,
It is a drum wound with 7B, 8A, and 8B. Cables 7A, 7B, 8A, 8B are each releasably connected to traction wire 5 at one end. Since the configuration of these coupling devices is the same, this will be explained for cable 7A with reference to FIG. 14. In FIG. 14, reference numeral 13 indicates the entire connecting device, and this connecting device is fixed to the pulling wire 5 by a connecting fitting 131 fitted to the pulling wire 5 so as to be rotatable in the direction of an arrow 130 around the pulling wire 5, and a screw 132. The connecting fitting 131 is the traction wire 5
A stopper 133 and a hook 134 that prevent the cable from moving backward when viewed from above in the pulling direction, a branch wire 135 that is locked to this, and a branch wire 135 that is held tightly against the cable 7A when it is put over one end of the cable 7A and pulled. It includes a mesh-like fitting 136, an untwisting part 137 locked between the branch wire 135 and the fitting 136, and a hook locking part 138 for hooking the hook 134 provided on the connecting fitting 131.

4A is a cable laying guide device, which is fixed to the beams 3A and 3B of the upper tray 1A and the middle tray 1B, and guides both the traction wire and the cable along separate routes. and a cable guide roller. The details of this cable laying guide device are the first.
5 and 16. FIG. 15 is a rear view, and FIG. 16 is a bottom view. The same parts as those in FIG. 12 are denoted by the same reference numerals, and their explanation will be omitted.

This cable laying guide device 4A consists of a wire guide device 417 that guides the endless traction wire 5 and a cable guide roller 418 that guides the cable pulled by the endless traction wire 5. The cable guide roller 418 is the bottom guide shown in FIG. This corresponds to the roller 404. The wire guide device 417 includes a pair of pulleys 417A,
417B, these pulleys 417A, 41
7B is the cable pulling direction 419 of the pulling wire 5
The pulleys 417 on one side
The shaft 420 of B extends through a slit 422 formed in the shelf 421 of the frame 401,
It is held by a nut 423 so as to be movable along the slit 422. The shaft 424 of the other pulley 417A is fixed to the shelf 421 by a nut 425. Pulley 417A, 417
B are spaced apart from each other to allow the coupling device 13 to pass through, and are held at approximately the same height with their outer circumferential grooves facing each other. The slit 422 is connected to the shaft 42
It is formed along the line connecting 0,424,
The shafts 420, 424 are drawn together by a spring 426, and in this drawn state pulley 417 is pulled as clearly seen in FIG.
The slit 422 is provided so that the slits A and 417B partially overlap when viewed in the axial direction of the frame 401. In this cable laying guide device, the pulling wire 5 and the connecting fittings 131 are connected to pulleys 417A, 4
The cable to be guided and laid between the grooves 427A and 427B of 17B is suspended from the pulling wire 5 via the coupling device 13 and supported by the cable guide roller 418. The connecting fitting 131 of the connecting device 13 resists the force of the spring 426 and connects to the pulley 41.
7A, 417B are pushed open, and the pulling wire 5 and connecting fittings 131 are connected to the pulleys 417A, 41.
7B partially wraps in the width direction of the frame 401 as described above, so that it is reliably guided between the pulleys 417A and 417B without falling.

Next, a method for laying cables on the trays 1B and 1C using this cable laying guide device 4A will be explained with reference to FIGS. 13 and 14. First, as shown in FIG. 11, a series of cable laying guide devices 4A are attached to the beams 3A of the tray 1A and the beams 3B of the tray 1B, and the traction wire 5 is passed between the pulleys 417A and 417B of each guide device 4A. . At least one worker is placed at each end of the trays 1B and 1C. A plurality of pairs of connecting fittings 131 and stoppers 133 are provided along the pulling wire 5 at appropriate intervals.

Now rotate the winch 9 and pull the tow wire 5
is run in the direction of arrow 419. Workers near the entrance end 101c of tray 1C use cables 7A, 7
Attach the fitting 136, untwist 137, branch wire 135 and hook 134 to the tip of B as shown in FIG. 14, and hook the hook 134 onto the hook locking part 138 of the connecting fitting 131 passing in front of you. The cable 7 connected to the traction wire 5 in this way
A is pulled by the pulling wire 5 to the tray 1
Enter C. Each time the connecting fitting 131 passes through the guide device 4A, the pulley 417B is pulled by the spring 426.
Push it open against the force of and move forward. The cable 7A is then pulled forward while being supported on the cable guide roller 418 while hanging down from the pulling wire 5 via the coupling device 13. As described above, since the cable 7A is pulled by the traction wire 5 by the power device 9, the above-mentioned disadvantages of manual work are eliminated, and the cable 7A is guided along a path separate from the traction wire 5. Since the traction wire 5 is pulled along the tray 1C while
and cable 7A are not tangled with each other.
In addition, since the connecting fitting 131 can rotate, the cable 7A is always maintained in a downwardly hanging state, and the above-mentioned tangling prevention is further ensured, and the connecting fitting 1
31 are pulleys 417A, 417B of the guide device 4A
You can pass through the gap smoothly. In addition, untwisting 13
7 allows rotation of the cable 7A and connects the connecting device 13
Prevent twisting.

A worker near the outlet end 102c of the tray 1c can hold the hook 1 when the coupling device 13 exits the tray 1c.
34 from the hook locking portion 138 of the connecting fitting 131. Thereby, the cable 7A is supported along the tray 1c on the cable guide rollers 418 of the series of guide devices 4A. In FIG. 13, after the cable 7A is connected to the traction wire 5, the cable 7B is immediately connected to the following connecting fitting 131, and therefore the two cables 7A and 7B are simultaneously pulled back and forth. . A similar operation can be performed for cables 8A and 8B. In this case, cable 8
A, 8B are connected to the pulling wire 5 by a worker near the outlet end 102c of the tray 1c, and removed by a worker near the inlet end 101c of the tray 1c. Each end 101c, 102 of tray 1c
If one worker was placed at each end 101c, one person would have to perform the connection and removal, but if this is not possible, an appropriate number of workers would be assigned to each end 101c and 101c.
It should be placed at 02c. After pulling the appropriate number of cables, the nuts 410 of each guide device 4A are loosened, the side guide rollers 403 are pivoted, and the cables are unloaded from the openings 411 into the respective trays 1B and 1C.

[Problem that the invention seeks to solve]

Since the conventional cable laying device proposed in Japanese Patent Application No. 59-265849 is configured as described above,
If there is a single tray, a large number of cable laying guide devices must be installed to guide the tow wire not only on the outbound route where the cable is pulled along the tray, but also on the return route that passes outside the tray. In addition, even when there are multiple trays, it is necessary to install multiple cable laying guide devices on the return route of the traction wire, which increases the equipment costs. There were problems such as danger to the workers when they had to guide the workers.

The present invention was devised to solve the problems of the conventional cable laying apparatus, and it is an object of the present invention to provide a cable laying apparatus that can reduce equipment costs and is highly safe for workers.

[Means to solve the problem]

The cable laying device according to the present invention has a wire guide device of the cable laying guide device including a frame having openings at the front and back when viewed in the cable pulling direction;
at least three pulleys mounted on the frame for rotation about a substantially vertical axis extending below the top of the frame;
Of the at least three pulleys, two adjacent pulleys in a pair and two adjacent pulleys in another pair are spaced apart from each other by a distance sufficient to allow the coupling device to pass through each pair, and are spaced from each other by an outer periphery. The grooves are arranged so that they face each other and move back and forth when viewed in the cable pulling direction, and partially overlap in the width direction of the front and rear frames. The return path of the endless traction wire is supported and guided through the grooves of the other pair of pulleys, while the cable is suspended from the traction wire via the connecting device. It is supported on guide rollers.

[Effect]

In the present invention, the outgoing portion and the returning portion of the traction wire are controlled by the at least three pulleys.
Reliably supported and guided by the same wire guide device, the cable is pulled forward while being supported on cable guide rollers while hanging from the traction wire via a coupling device.

[Embodiments of the invention]

FIG. 1 is a perspective view showing an embodiment of the present invention. In FIG. 1, the same parts as those in FIG. 13 are given the same reference numerals, and their explanation will be omitted. 4B is a cable laying guide device constituting the main part of the present invention, 501 is an outgoing path portion of the endless traction wire 5, 50
2 is the return portion. As seen in the figure, the outgoing section 5
01 and the return path 502 are guided through the same cable laying guide device 4B, and the pulling wire 5 is folded back by guide pulleys 6 at both ends of the tray 1C. Cables 7A and 7B are connecting device 13
It is pulled forward while being supported on the cable guide rollers 418 while hanging from the pulling wire 5 via the cable guide rollers 418. The coupling device 13 is the same as that shown in FIG.
It is the same as that described in .

Next, the cable laying guide device 4B will be explained with reference to FIGS. 2 to 4. 2 is a front view, FIG. 3 is a left side view of FIG. 2, and FIG. 4 is a plan view of FIG. 2. Note that the same or corresponding parts as those in FIGS. 15 and 16 are given the same reference numerals, and their explanations will be omitted. The wire guide devices 417 are provided in a frame 401 which is open at the front and rear when viewed in the cable pulling direction 419, and are provided with a space between them such that the wire guide devices 417 can rotate about a substantially perpendicular axis extending downward from the top of the frame 401 and allow the coupling devices 13 to pass through each other. Three pulleys 417 are installed with their outer circumferential grooves facing each other.
C, 417D, and 417E, and supports and guides the outgoing path portion 501 of the endless traction wire 5 through between the outer circumferential grooves of a pair of pulleys 417C, 417D that are located at one end and the center of these pulleys and are adjacent to each other;
The return path portion 502 is guided through an outer circumferential groove of another pair of pulleys adjacent to each other, that is, the pulley 417E at the other end and the pulley 417D at the center. Thus, the outgoing portion 5 of the endless traction wire 5
01, both the return path portions 502 are guided through the same wire guide device 417, so even if there is only one tray, there is no need to return the return path portion 502 through the outside of the tray, so safety for the worker is ensured, and Since there is no need to separately provide the cable laying guide device 4B for the return route section 502, the equipment cost is reduced. Further, even when there are multiple trays, there is no need to provide a dedicated cable guide device 4B for the return path section 502, resulting in lower equipment costs. Also, the central pulley 4
17D contacts the outward path portion 501 and return path portion 502 of the endless traction wire 5 on both sides, but these outward path portion 501 and return path portion 502 are connected to the pulley 417D.
Because they rotate in the same direction, they are guided smoothly without any friction. Note that 426A is a spring that draws two adjacent pulleys 417C and 417D together, and 426B is a spring that draws other two adjacent pulleys 417D and 417E together, and its function is the same as that of the spring in FIGS. 15 and 16. Same as 426. In order to make this pulling possible, the frame 401 has a slit 422.
A shaft 428D rotatably supporting a central pulley 417D is inserted through the slot 422 so that it can move along the slit 422. In addition, 428C and 428E are pulleys 41
This is a shaft that rotatably supports 7C and 417E.
Further, the pulleys 417C and 417D that guide the outgoing path portion 501 of the endless traction wire 5 are arranged so as to move back and forth when viewed in the cable traction direction 419, and the spring 42
The pulleys 417D, 6A are arranged so as to partially overlap in the width direction of the frame 401 when they are pulled together at 6A, and guide the return path 502.
417E are also disposed so as to be located one behind the other when viewed in the cable pulling direction 419, and to partially wrap in the width direction of the frame 401 in a state where they are similarly drawn together by springs 426B. The advantage of this arrangement is that the traction wire 5 and the connecting fitting 131 are reliably held between the pulleys 417C and 417D and between the pulleys 417D and 417E, as described with reference to FIGS. 15 and 16. Needless to say, the shafts 428C and 428E are fixed to the frame 401.

Other wire guide devices of cable laying guide devices that can be used in the present invention are shown in FIGS. 5-7. FIG. 5 is a front view, FIG. 6 is a sectional view taken along the line - in FIG. 5, and FIG. 7 is a plan view of FIG. 5. suitable for use. In other words, the cable laying device shown in Figure 8 is
-40758 (Japanese Patent Application No. 61-203811), the wire guide device 417 and the cable guide roller 418 are separated and their positions are determined when viewed in the cable pulling direction 419. It was shifted. By doing this, even if the distance between the trays 1A, 1B, and 1C is narrow, the cable 7 can be placed below the wire guide device 417.
A large space is secured to accommodate the wire guide device 417 and the cable guide roller 41.
8 can be inserted and installed between trays even if the spacing between the trays is narrow.

Therefore, this wire guide device will be explained with reference to FIGS. 5 to 7. The difference between this wire guide device and that shown in FIGS. 2 to 4 is that the shafts 428C, 428
D and 428E are fixed to the frame 401, and the side guide rollers 402 and 403, the cable guide roller 418, and the springs 426A and 426B are removed to reduce the height of the frame 401. The cable guide roller 418 is arranged at a distance from the wire guide device 417 when viewed in the cable pulling direction 419, as shown in FIG. When fixing the shafts 428C, 428D, and 428E to the frame 401 as in this embodiment, the connecting fittings 1
Pulleys 417C, 417 with 31 fixed in position
The diameter and length of the connecting fitting 131, the depth of the outer circumferential grooves of the pulleys 417C, 417D, and 417E, etc. may be appropriately selected so that the connecting fitting 131 can meander between D and between the pulleys 417D and 417E.

Other examples of wire guide devices that can be used with the present invention are shown in FIGS. 9 and 10. 9th
The figure is a front view, and FIG. 10 is a sectional view taken along the line - in FIG. 9. This is different from the ones in FIGS. 5 to 7 in that a pulley 417F is added and four pulleys 417C to 417F constitute the wire guide device 417, and the outer circumferential groove of the pulley 417C at one end and the adjacent The outward path portion 501 of the endless traction wire 5 is supported and guided between the outer circumferential groove of the pulley 417D, and the return path portion 502 is supported and guided between the outer circumferential groove of the pulley 417F at the other end and the outer circumferential groove of the adjacent pulley 417E. This is what I decided to do. The cable guide rollers can be arranged offset from the wire guide device as seen in the cable traction direction 419, as shown in FIG. In that case, the cable guide rollers are arranged below the outgoing section 501 and the inward section 50.
2, the return route section 502 can also be used for laying cables.

In addition, in the embodiment shown in FIG.
Although one cable is connected to the two, multiple cables may be connected. Further, the cable laying device of the present invention can be used as is in cases where the winch 9 is out of order or the like, in which cables are manually pulled and laid on cable guide rollers in the same way as in the past. The connecting device 13 is not limited to what is shown in the drawings; for example, the branch wire 135 may be omitted, or other types of connecting devices may be used.

〔Effect of the invention〕

As described above, according to the present invention, the wire guide device is composed of at least three pulleys, and the outgoing path portion of the endless traction wire is guided between the outer circumferential grooves of two adjacent pulleys forming a pair, The return section is guided between the outer peripheral grooves of two adjacent pulleys forming another pair, and the cable is suspended from the traction wire via a coupling device and supported on the cable guide roller, so that the traction Endless traction wires can be guided through the same wire guide device while avoiding entanglements between wires and cables, and equipment costs are low because the wire guide device that was conventionally required for the return route can be omitted. Even if there is only one tray, there is no need to guide the outgoing part of the traction wire through the outside of the tray, ensuring safety for workers, and the pulley partially wraps in the width direction of the frame. With this arrangement, various effects can be obtained, such as the pulling wire being reliably guided along a predetermined route without falling out of the outer circumferential groove of the pulley.

[Brief explanation of drawings]

Fig. 1 is a perspective view schematically showing an embodiment of the present invention as a whole, Fig. 2 is a front view of the cable laying guide device in the embodiment of Fig. 1, and Fig. 3 is a left side view of Fig. 2. 4 is a plan view of FIG. 2, FIG. 5 is a front view showing a wire guide device different from the wire guide device in FIGS. 2 to 4, and FIG.
The figure is a sectional view taken along the line - of Figure 5, Figure 7 is a plan view of Figure 5, and Figure 8 is a cable laying device suitable for using the wire guide devices of Figures 5 to 7. 9 is a front view of a wire guide device different from those in FIGS. 5 to 7, FIG. 10 is a sectional view taken along the line - of FIG. 9, and FIG. 11 is a conventional 12 is a front view of a conventional cable laying guide device, and FIG. 13 is a cable laying system proposed in Japanese Patent Application No. 59-265849 (Japanese Patent Application No. 61-142911). FIG. 14 is an enlarged side view of the connection device for the cable to the traction wire in the device shown in FIG. 13; FIG. 15 is a rear view of the cable laying guide device in the device shown in FIG. 13; 16 is a bottom view of FIG. 15. In the figure, 1A, 1B, 1C are trays, 5 is an endless traction wire, 501 is an outgoing portion thereof, 502
7, 7A, 7B are cables, 9 is a power unit (winch), 13 is a coupling device, 401 is a frame, 417 is a wire guide device, 417
C, 417D, 417E, and 417F are pulleys, respectively. Note that the same reference numerals in each figure indicate the same or corresponding parts.

Claims (1)

[Scope of Claims] 1. A device for laying a cable in a tray, comprising an endless traction wire for pulling the cable to be laid, and a device detachably fixed above the tray to guide the endless traction wire along the tray. a wire guide device that runs the endless traction wire along the wire guide device; a connecting device that detachably connects the tip of the cable to be laid to the endless traction wire; and a cable that is towed by the endless traction wire. In those equipped with cable guide rollers that guide the cable,
The wire guide device includes a frame having an open front and rear sides when viewed in the cable pulling direction, and at least three pulleys mounted on the frame so as to be rotatable about a substantially vertical axis extending downward from the top of the frame. of the at least three pulleys, two pulleys adjacent to each other forming a pair and two adjacent pulleys forming another pair are spaced apart from each other to allow the coupling device to pass through each pair. placed so that their outer circumferential grooves face each other, and are arranged so that they are arranged in front and behind each other when viewed in the cable pulling direction, and partially wrapped in the width direction of the frame,
The outgoing portion of the endless traction wire is supported and guided through between the outer circumferential grooves of one pair of pulleys, and the return portion of the endless traction wire is supported and guided through between the outer circumferential grooves of the other pair of pulleys. On the other hand, the cable laying device is characterized in that the cable is suspended from the pulling wire via the connecting device and supported on the cable guide roller. 2 Three pulleys are provided, one pair of pulleys is a pulley at one end and the center pulley, and the other pair of pulleys is a pulley at the other end and the center pulley. cable laying equipment. 3 Four pulleys are provided, and one pair of pulleys is a pulley at one end and a pulley adjacent thereto, and the other pair of pulleys is a pulley at the other end and a pulley adjacent thereto.Claim 1 Cable laying equipment as described in section.