JP3680190B2 - Laying cable peeling device and peeling method - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for peeling a cable from a cable tray or the like and a peeling method using the same in order to remove or replace a cable tray or a cable laid on a cable rack provided in a power plant or substation. is there.
[0002]
[Prior art]
In order to lay a large number of (electrical) cables in a power plant, a substation, etc., a plurality of cable receiving members 3 are perpendicular to each other at a predetermined interval between a pair of parallel side members 2 as shown in FIGS. A cable tray or a cable rack 1 (hereinafter, simply referred to as a cable tray 1) having a structure disposed in FIG. The cable tray 1 is supported at predetermined intervals by a plurality of cable tray supports 4 attached to a support base 5 such as a building or a frame.
In the cable tray 1 in a relatively old facility or the like, a non-flame retardant cable 6a is laid as shown in FIG. 6, and the fire spreader 7 is applied on the outer periphery of the cable tray 1 in a layer. A new flame retardant cable 6 is laid on the fire spread inhibitor 7. The new flame retardant cable 6 is sequentially increased by installing new facilities or remodeling after the old non-flame retardant cable 6a is laid. Of course, the fire spreader 7 is not applied to the flame retardant cable 6. And the non-flame retardant cable 6a that has passed for many years tends to be unusable. In such a case, it is often necessary to remove the non-flame retardant cable 6 a and the fire spread inhibitor 7 from the cable tray 1 and to lay a new flame retardant cable 6.
[0003]
Conventionally, when removing the flame spread inhibitor 7 and the non-flame retardant cable 6a in the cable tray 1 as described above, for example, a pipe is inserted between the upper part of the flame spread inhibitor 7 to be removed and the flame retardant cable 6; Both ends are lifted by a string or the like and supported by some member, and such pipes are arranged at predetermined intervals in the longitudinal direction of the flame-retardant cable 6, and the fire spreader 7 is peeled off in this state. And the non-flame retardant cable 6 a is removed from the cable tray 1. After the inside of the cable tray 1 was cleaned, the flame-retardant cable 6 that was lifted was stored in the cable tray 1.
[0004]
However, when performing the operation of removing the fire spread inhibitor 7 and the non-flame retardant cable 6a in the cable tray 1 as described above, a large force for lifting the flame retardant cable 6 on the cable tray 1 is required. , Takes a lot of effort and time. Moreover, it is dangerous when the string is cut. In order to solve these problems, the present applicant invented the “laying cable lifting device and lifting method” and applied for it first (Japanese Patent Application No. 8-53834).
[0005]
[Problems to be solved by the invention]
By using the apparatus of the invention filed earlier, the flame retardant cable 6 existing above the flame spreader 7 and the non-flame retardant cable 6a in the cable tray 1 is removed. Can be lifted easily and efficiently.
However, when the flame spreader 7 and the non-flame retardant cable 6a are removed after lifting the flame retardant cable 6 in such a manner, they are often firmly fixed to the cable receiver 3 in the cable tray 1, The problem that peeling was difficult remained.
Therefore, in order to solve such a problem, the present invention has the following configuration.
[0006]
[Means for Solving the Problems]
According to the present invention, a plurality of cable receiving members (3) are laid between a pair of parallel side members (2) from a cable tray or a cable rack disposed at right angles at a predetermined interval. What apparatus der to peel off the cable,
A main body (11) and a pair of engaging portions (12) for engaging the main body (11) with each side material (2) from below the cable receiving material (3);
Provided liftably mounted lift member to the said body (11) and (13), said lifting member and a body lifting means for lifting from (11) (14) (13),
It is disposed between adjacent cables receiving material (3), lifting means by increasing the lift body (13) from the body (11) by (14), top cable receiving material (3 of the lift member (13) The cable laying device is constructed so as to be lifted from below and lifted from the cable receiving material (3) and peeled off .
The present invention described in claim 2 is an embodiment of the invention described in claim 1, wherein the elevating means (14) is formed with a left screw portion (23) and a right screw portion (24) in the longitudinal direction. The screw rod (22) whose both ends are pivotally supported by the main body (11), the rotating means (26) for rotating the screw rod (22), and the left screw portion of the screw rod (22) ( 23) and long nuts (27), (28) screwed to the right thread portion (24), respectively, and a link mechanism (29) connected to these long nuts (27), (28) The interval between the long nuts (27) and (28) is changed by the rotation of (22), and the lift body (13) is lifted and lowered via the link mechanism (29) connected to them. A laying cable peeling device is characterized.
[0007]
The present invention as set forth in claim 3 is a preferred embodiment of the above invention, wherein each side member (2) is a U-shaped cross section by a vertical plate (2a) and upper and lower horizontal plates (2b), (2c). A pair of hooking portions (12) provided on the main body (11) can be hooked from the outside to the side member (2), and at least one hooking portion (12) is a side member (2 The laying cable peeling device is detachable from the main body (11) in a state of being hooked to the main body (11).
The present invention as set forth in claim 4 is characterized in that a cable laid on a cable tray or a cable rack in which a plurality of cable receiving members (3) are connected at right angles at a predetermined interval between a pair of parallel side members (2). a method for peeling, providing a stripping device according to any one of claims 1 to 3 (10), located between adjacent cables receiving material (3), said peeling apparatus (10) The main body (11) is engaged with each side material (2) from below using the pair of engaging portions (12),
By raising lift body (13) from the body (11) by lifting means (14), by raising the upper surface of the lift member (13) from the lower cable receiving material (3), abut it to the cable A laying cable peeling method characterized in that the cable receiving material (3) is lifted upward and peeled off.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Next, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is an exploded perspective view showing an example of the peeling apparatus of the present invention. The peeling device 10 includes a main body 11, a pair of hooking portions 12 for hooking the main body 11 to the side members 2 from below the cable receiving material 3, a lift body 13 attached to the main body 11 so as to be movable up and down, and a lift body 13. Elevating means 14 for elevating and lowering from the main body 11 is provided.
The main body 11 is formed in an elongated cylindrical shape having a square cross section, and a pair of elongated slits 15 are provided in the longitudinal direction of the upper plate, and connecting pieces 16 and 17 are provided at both ends of the upper plate. Then, a hooking portion 12 having a U-shaped cross section is connected to one connecting piece 16 by welding or the like so that it can be hooked from the outside to the side member 2 described later, and the other connecting piece 17 is hooked in the same shape. The part 12 is detachably connected by two bolts 18 and a nut 19. In addition, two bolt holes 20 and 21 through which the two bolts 18 are inserted are provided at positions corresponding to the other connecting piece 17 and the engaging portion 12 connected thereto.
[0009]
In FIG. 1, a screw rod 22 formed with a left screw portion 23 on the left side of the longitudinal intermediate portion A and a right screw portion 24 on the right side is arranged in a cylindrical main body 11. The shaft is supported by bearings 25 provided at both ends. The screw rod 22 is further extended from the left bearing 25, and a rotating means 26 such as an operation handle is connected to the extended end portion. The rotating means 26 may be driven by a driving source such as an electric motor.
A long nut 27 having a left-hand thread formed on the left-hand thread portion 23 and a long nut 28 having a right-hand thread formed on the right-hand thread portion 24 are screwed to each other. As shown in FIG. Connection portions 27a and 28a each having a connection hole are provided.
The connecting portions 27a and 28a of the long nuts 27 and 28 protrude upward from the slit 15 and are rotatably connected to one end of a link mechanism 29 having two elongated connecting plates by a connecting pin. Is connected to two left and right positions of the lift body 13 formed in a trapezoidal shape by a connecting pin so as to be rotatable. The screw rod 22, the rotating means 26, the long nuts 27 and 28, and the link mechanism 29 constitute the elevating means 14.
[0010]
Next, a method of peeling the non-flame retardant cable and the fire spread inhibitor laid on the cable tray using the peeling device 10 will be described with reference to FIGS. 3 and 4.
3 is a partial cross-sectional view of the state in which the pair of hooking portions 12 of the peeling device 10 are hooked to the pair of side members 2 in the cable tray, as viewed from the longitudinal direction of the cable tray. FIG. It is IV sectional drawing.
The side member 2 in this example has a U-shaped cross section formed by a vertical plate 2a and upper and lower horizontal plates 2b and 2c.
[0011]
First, the pair of engaging portions 12 of the main body 11 are engaged with the side members 2 of the cable tray. That is, in the state where the left hook 12 in FIG. 3 is separated from the connecting piece 17 as shown by the alternate long and short dash line, the main body 11 is positioned below the side member 2, and the right hook 12 is outside the right side member 2. I will start from. Next, the left engaging portion 12 is engaged with the left side member 2 from the outside and is connected to the connecting piece 17 by a bolt 18 and a nut 19 (see FIG. 1). Thereby, the main body 11 is stably engaged with the left and right side members 2 at two locations from below.
Similarly, the required number of other peeling devices 10 are engaged at a predetermined interval in the longitudinal direction of the side material of the cable tray on which the non-flame retardant cables to be peeled are laid.
Next, when the rotating means 26 is rotated to the right as shown in FIG. 1, the left long nut 27 moves to the right as shown by the arrow, and the right long nut 28 moves to the left as shown by the arrow. The angle between the two elongated connecting plates 29 is reduced, and the lift body 13 is raised.
[0012]
When the lift body 13 is lifted, the non-flame retardant cable 6a is peeled and lifted together with the fire spread inhibitor 7 fixed so as to stick to the upper surface of the cable receiving member 3.
By performing these operations in the same manner for each peeling device 10, the non-flame retardant cable and the fire spread inhibitor having a predetermined length can be peeled off. The peeled non-flame retardant cable and the fire spreader can be easily removed from the cable tray.
[0013]
【The invention's effect】
According to the first aspect of the present invention, the fire spreader and the non-flame retardant cable that are firmly fixed and adhered to the cable receiving material of the cable tray can be efficiently and quickly peeled off by lifting the lift operation. . Moreover, this peeling apparatus can be made simple and lightweight.
Next, according to the invention described in claim 2, the elevating means can be configured with a simple structure.
Moreover, according to the invention of Claim 3, a pair of engaging part provided in the main body can be engaged with each side material 2 more easily.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view showing an example of a peeling apparatus of the present invention.
FIG. 2 is an enlarged perspective view of long nuts 27 and 28 and a link mechanism 29 portion of FIG.
FIG. 3 is a partial cross-sectional view of the state in which the peeling device 10 is engaged with the side member 2 of the cable tray as viewed from the longitudinal direction of the cable tray.
4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 5 is a perspective view showing an example of a cable tray or a cable rack.
6 is a longitudinal sectional view showing a state where cables and the like are laid on the cable tray or cable rack of FIG.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Cable tray or cable rack 2 Side material 2a Vertical plate 2b Upper horizontal plate 2c Lower horizontal plate 3 Cable receiving material 4 Cable tray support 5 Support base 6 Flame-retardant cable 6a Non-flame-resistant cable 7 Fire spread inhibitor 10 Peeling Device 11 Main body 12 Engagement part 13 Lift body 14 Lifting means 15 Slit 16 Connection piece 17 Connection piece 18 Bolt 19 Nut 20 Bolt hole 21 Bolt hole 22 Screw rod 23 Left screw part 24 Right screw part 25 Bearing 26 Rotating means 27 Long nut 27a Connecting part 28 Long nut 28a Connecting part 29 Link mechanism

Claims (4)

A device for peeling a cable laid from a cable tray or a cable rack in which a plurality of cable receiving members (3) are arranged at right angles at a predetermined interval between a pair of parallel side members (2),
A main body (11) and a pair of engaging portions (12) for engaging the main body (11) with each side material (2) from below the cable receiving material (3);
A lift body (13) attached to the main body (11) so as to be movable up and down, and a lifting means (14) for raising and lowering the lift body (13) from the main body (11) ,
It is disposed between adjacent cables receiving material (3), lifting means by increasing the lift body (13) from the body (11) by (14), top cable receiving material (3 of the lift member (13) The cable laying device is constructed so as to be lifted from below and lifted off from the cable receiving material (3) and peeled off. The elevating means 14 has a left screw portion 23 and a right screw portion 24 formed in the longitudinal direction, and a screw rod 22 whose both ends are pivotally supported by the main body 11, a rotating means 26 for rotating the screw rod 22, Long nuts 27 and 28 screwed into the left screw portion 23 and the right screw portion 24 of the screw rod 22 and link mechanisms 29 connected to the long nuts 27 and 28 are provided. The laying cable peeling apparatus according to claim 1, wherein the distance between the long nuts (27, 28) is changed, and the lift body (13) is moved up and down via a link mechanism (29) connected thereto. Each side member 2 is formed in a U-shaped cross section by a vertical plate 2a and upper and lower horizontal plates 2b, 2c, and a pair of hook portions 12 provided on the main body 11 can be hooked on the side member 2 from the outside. The laying cable peeling apparatus according to claim 1, wherein at least one of the hooking portions 12 is detachable from the main body 11 while being hooked on the side member 2. A method for peeling a cable laid on a cable tray or a cable rack in which a plurality of cable receiving members (3) are connected at right angles at a predetermined interval between a pair of parallel side members (2). A peeling device (10) according to any one of claims 3 to 5 is prepared, and located between adjacent cable receiving materials (3) , the main body (11) of the peeling device (10) is engaged with a pair thereof. Use the part (12) to engage each side material (2) from below,
By raising lift body (13) from the body (11) by lifting means (14), by raising the upper surface of the lift member (13) from the lower cable receiving material (3), abut it to the cable A method for peeling a laying cable, wherein the cable receiving material (3) is lifted upward and peeled off.

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