JP2006160465A - Cable unreeling stand - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cable unreeling stand, in which a cable drum quickly stops rotation without having inertial rotation by inertia due to cable unreeling force when cable unreeling operation is stopped, and preventing inverse cable winding phenomenon. <P>SOLUTION: This stand comprises a base 1, a vertical frame 2 vertically provided from the base 1, horizontal shafts 3 and 4 horizontally protruded from an upper part of the vertical frame 2 and an intermediate part of height to be roughly parallel to each other, and a swinging frame 5 suspended from the upper horizontal shaft 3 to be capable of swinging. The intermediate horizontal shaft 4 is set at such a height position to be capable of rotatably shaft-supporting a cable winding drum D. The swinging frame 5 is provided with a horizontal beam 52 provided with brake parts 6 and 6 to abut on outer circumferential surfaces f and f of side plates d and d in the cable winding drum D, and a cable contact part 53 to get in contact with a cable c unreeled at the time of cable unreeling operation to separate the brake parts 6 and 6 from the outer circumferential surfaces f and f of the drum side plates d and d. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  In the present invention, a cable drum in which an optical fiber cable, a telephone cable, a collective antenna cable, electric wires and other various cables are wound is inserted into a horizontal axis using its center hole, and is rotatably supported. The present invention relates to a cable pull-out stand that is used during work for pulling out and wiring a cable end in construction or the like.

A conventionally known cable drawing table uses, for example, a central hollow portion of a cable bundle wound in a drum shape, is fitted into a rotating frame of a turntable and is mounted on the rotating table. The cable bundle placed is stabilized by pressing it from the upper surface, and the cable end is pulled out laterally outside by loosening from the outside of the cable bundle via a guide provided on the turntable (Patent Document 1) Similarly, using the central cavity of the cable bundle, place it in the rotating frame of the turntable-like turntable, place it on the base, and loosen it from the inside of the cable bundle so that the hole in the base is There is known a structure (Patent Document 2) that has a structure that is pulled out to the outside in the lateral direction.
JP 2000-191242 A Japanese Utility Model Sho 55-163731

  Such a conventional cable drawing stand is used by using the central cavity portion of the cable bundle and fitting it on the cable holding frame of the turntable and placing it on the turntable. Both the type that pulls out from the outside of the bundle and the type that pulls out from the inside rotate the entire cable base on the horizontal surface by the pulling force of the cable, so that the entire turntable can be rotated lightly using bearings etc. Need a device to do. On the other hand, when the cable drawing operation is stopped, a device for quickly stopping the rotation is required so that the cable does not cause a reverse winding phenomenon due to the inertia caused by the drawing force. If it is difficult to cause inertial rotation to prevent this reverse winding phenomenon, a force is required to pull out the cable.

  In addition, in the case of using the cable bundle placed on the turntable in this way, the cable bundle is naturally loosened and easily deforms. Therefore, the pulling force for the cable has changed into a tightening force toward the center of the cable bundle, and has a problem that it is difficult to smoothly pull out the cable by biting into the cable bundle.

  Therefore, the present inventor is intended for a cable wound around a drum, and while the drum is wound, the center hole of the drum is inserted into the horizontal axis and rotated around the horizontal axis, and the cable drawing operation is performed. Although it can be performed easily, it is possible to naturally and reliably release the brake of the drum and brake the inertial rotation by using the pulling force, and the cable can be pulled out freely. The purpose of the present invention is to provide a cable drawing stand that hardly causes the entanglement phenomenon.

  The configuration of the cable drawing stand according to the present invention taken to achieve this object will be described with reference to the reference numerals used in the drawings showing the embodiments, and the base 1 and the vertical stand raised from the base 1. A frame 2, substantially parallel horizontal shafts 3 and 4 projecting horizontally from an upper portion of the vertical frame 2 and an intermediate portion in the height direction, and a swing frame 5 suspended swingably on the upper horizontal shaft 3 The intermediate portion horizontal shaft 4 is set at a height position at which the cable winding drum D can be rotatably supported, and the swing frame 5 is connected to the side plates d and d of the cable winding drum D. The horizontal rod 52 provided with the braking portions 6 and 6 that come into contact with the outer peripheral surfaces f and f and the cable c that is pulled out at the time of the cable pulling operation come into contact with the braking portions 6 and 6 and the outer peripheral surfaces f of the drum side plates d and d. , F is provided with a cable contact portion 53 that is separated from f.

  The cable drawing stand according to the present invention configured as described above includes a swing frame in which a braking portion that contacts the outer peripheral surfaces of the left and right side plates of the cable winding drum is suspended swingably on the upper horizontal axis. The cable is provided with a cable contact portion that is in a contact state at all times and is provided with a cable contact portion that raises and tilts the swing frame by contacting the cable that is pulled out during the cable pulling operation. During operation, the braking part can be automatically detached from the outer peripheral surface of the drum side plate as the swinging frame rises, and the cable can be easily pulled out from the drum. As the cable pull-out tension decreases, the swing frame automatically descends and tilts due to its own weight, and the brake part automatically contacts the outer peripheral surface of the drum side plate, and the gravity of the swing frame is concentrated on the brake part. so It is to stop or descending slope. The cable winding drum can be stopped in an extremely small state, if any, by causing the braking part supporting the gravity of the swinging frame to contact the outer peripheral surface of the drum side plate so that the inertial rotation hardly occurs. Regardless of the frequency of use, it is possible to always prevent the occurrence of the reverse cable winding phenomenon.

  Especially for cables that are easily broken due to refraction and require a lot of time and labor to connect the wires, and the connection is abnormally bulky, such as optical cables that have been rapidly spreading recently. The cable pull-out stand of the present invention is used for the cable pulling work in which the occurrence of reverse winding due to inertial rotation of the cable must be prevented in full width and the occurrence of disconnection due to refraction should be absolutely avoided when the cable is redrawn. Is the best.

  Further, as described above, the cable drawing stand according to the present invention has a configuration in which the rocking frame is provided with the cable contact portion that comes into contact with the cable drawn during the cable pulling operation and lifts and tilts the rocking frame. As long as the cable drawing direction is above the position of the contact portion, it can be used without any restriction on the drawing direction, not only standing on the ground, but also with the cable drawing stand placed on the ground, for example Also, it has an advantage that it can be pulled out freely for cable tension work above the stepladder or on the ladder.

  In practicing the present invention, the swing frame 5 is formed in a substantially U shape, and a horizontal bar 55 having a cable contact portion 53 at an upper portion of the lower frame 54 with a cable passage space s therebetween. It is preferable in that it is easy to manufacture because it is only necessary to fix the horizontal bar 55 to the U-shaped frame. Further, as a means for enhancing the braking effect of the braking portions 6 and 6 that are brought into contact with the outer peripheral surfaces f and f of the side plates d and d of the cable winding drum D, the horizontal bar 55 serves as a heavy metal bar or a heavy weight. Preferably, the swing frame 5 itself is made heavy.

  The present invention will be described below based on the embodiments shown in the drawings. 1 is a perspective view showing a use state of the first embodiment of the present invention, FIGS. 2 and 3 are front views for explaining the use state, FIG. 4 is a side view of FIGS. 1 and 2, and FIG. The perspective view which shows a state, FIG. 6 is the front view, FIG. 7 is the side view. FIG. 8 is an exploded perspective view of each disassembleable part.

  As shown in FIGS. 1 to 4, the cable drawing stand according to the present invention is configured such that two metal pipes are bent in an L shape in plan view and are brought into contact with each other so as to form a U shape. The butt end is raised from the U-shaped middle part adjacent to each other in parallel to form two vertical frames 2 that are long and short, and one of them (the right pipe in FIGS. 1 and 5) is the upper end of the vertical frame 2 From the portion, another one (the left pipe in FIGS. 1 and 5) protrudes from a substantially middle portion in the vertical direction of the vertical frame 2 in the horizontal direction, so that two substantially parallel horizontal shafts 3 and 4 are formed. It shall be formed. The base 1, the vertical frame 2, and the two upper and lower horizontal axes 3 and 4 are not limited to those shown in the figure, but, for example, one vertical shaft raised from one side portion of the circular base. The upper and lower horizontal shafts 3 and 4 can be formed by other appropriate means.

  Of the two upper and lower substantially parallel horizontal shafts 3 and 4, the upper horizontal shaft 3 is a double member in which the outer tube body is externally fitted to the core shaft in a sheath shape so as to be rotatable in the axial circumferential direction. As shown in FIGS. 4 and 7, the upper end of the swing frame 5 whose general shape is substantially U-shaped is fixed to the outer tube body so as to be suspended. The swing frame 5 is formed by bending a substantially U shape using a metal pipe.

  Thus, a cylindrical outer shaft 51 is fixed to a portion near the upper end of the swing frame 5, and horizontal rods 52, 52 are inserted into the outer shaft 51 so that it can be moved out of the left and right and the angle in the circumferential direction can be changed. As shown in FIG. 1, the fixing screws 7 and 7 are used to fix the flat plate-like braking parts 6 and 6 near the outer ends, and the angular posture is fixed like a thumbscrew. It is fixed with screws 7 and 7. The braking portions 6 and 6 are formed so as to contact the outer peripheral surfaces f and f of the left and right side plates d and d constituting the cable winding drum D to be used, respectively.

  Further, a horizontal bar 55 is fixed to the upper portion of the swing frame 5 near the lower frame 54 with a cable passage space s therebetween, and the lower surface portion thereof is used as a cable contact portion 53, as shown in FIG. The cable c is brought into contact with the cable c drawn during the cable drawing operation, and resistance and tension are applied to the cable c. The horizontal bar 55 is formed of a thick bar, and it is considered that the braking effect of the braking units 6 and 6 with respect to the cable winding drum D can be enhanced by its gravity, and unnecessary inertia rotation of the drum D can be controlled. It is.

  The intermediate portion horizontal shaft 4 is set to a height position at which the cable winding drum D can be rotatably supported, and on the base portion side (right side in FIGS. 5, 7, and 8), one side plate d of the drum is disposed. A first stopper 41 having a cylindrical portion 44 that fits into a hole formed in the central portion and supports one side of the drum and a flange 43 that contacts the outer surface of the same side plate d and regulates the rear side position of the drum is fitted. When the drum D is pivotally supported on the horizontal shaft 4, it fits into a hole formed in the center portion of the other side plate d of the drum and is attached to the outer surface of the side plate d and the cylindrical portion 44 a that supports the other side of the drum. A flange 43 that contacts and regulates the front side position of the drum is provided, another cylindrical portion 44b that protrudes to the outside of the flange 43, and a small-diameter cylindrical portion 45 that further protrudes a predetermined length from the central portion of the cylindrical portion 44a. The second stopper 42 is fitted to the drum insertion side of the horizontal shaft 4, and the seat 46 is fixed by screwing between the screw hole 48 of the screw and the shaft end of the handle 47 tightened through.

  Normally, as shown in FIGS. 5 to 7, the swing frame 5 is suspended from the upper horizontal frame 3.

  Thus, in order to make the cable winding drum D pivotable on the horizontal shaft 4 to be usable, that is, in the state shown in FIGS. 1, 2 and 4, the tightening handle 47 (including the washer 46) is used. ) And the second stopper 42 are removed, and the drum D is inserted onto the horizontal shaft 4 in a state where the first stopper 41 is present on the horizontal shaft 4, and the cylindrical portion 44a of the second stopper 42 is inserted into the drum hole from the outside. As described above, the screw of the tightening handle 47 and the screw hole 48 of the shaft end may be screwed together via the washer 46 and fixed as described above.

  In order to use the cable c in this state, the cable end is externally passed through the cable passage space s formed between the lower frame 54 of the swing frame 5 and the horizontal bar 55 as described above. 2 is pulled out (state shown in FIG. 2), and its end is pulled out in an arbitrary use direction (state shown in FIG. 3). In this drawing direction, the position of the operator's hand is usually higher than the position of the cable passage space s, and the place where the cable c is used is usually a higher position. As shown in FIG. 3, the lower surface side of the horizontal bar 55 comes into contact with c, the gravity of the horizontal bar 55 itself and the load of the entire swing frame 5 are transmitted to the cable c, and resistance and tension are applied to the cable c. In addition, the lower end side of the swing frame 5 is shifted upward, and the braking portions 6 and 6 are separated from the side plates d and d of the drum D, so that the cable can be easily pulled out.

  When the cable drawing operation is interrupted, the tension of the cable c decreases, so that the swing frame 5 is lowered by its own weight, and the braking parts 6 and 6 are placed on the outer peripheral surfaces f and f of the left and right side plates d and d of the drum D. The drums D can be brought into contact with each other and the inertial rotation of the drum D can be braked by the gravity of the swing frame 5 so that the rotation can be stopped quickly.

  9 and 10 are diagrams for explaining another example of use. FIG. 9 shows that the diameter of the left and right side plates d, d of the cable winding drum D is smaller than that of the drum D shown in the above embodiment. Thus, even if the diameters of the side plates d and d of the drum D are small, the braking portions 6 and 6 provided on the swing frame 5 are inclined downward as compared with the above-described embodiment by the swing frame 5 due to its own weight. Thus, the drum side plates d and d are surely brought into contact with the outer peripheral surfaces f and f of the drum side plates d and d. In this case, when the brake units 6 and 6 are rotatable in the axial direction with respect to the outer shaft 51, they automatically depend on the most suitable posture with respect to the outer peripheral surfaces f and f of the drum side plates d and d. In the case of the type of fixing with the fixing screws 7 shown in the above embodiment, the angle may be adjusted individually.

  FIG. 10 shows a case where the distance between the left and right side plates d of the cable winding drum D is smaller than that of the drum D shown in the above embodiment. In the case where the distance between the drum side plates d, d is small, the second stopper 42 used outside the drum D is set in the reverse direction as shown in FIG. Another cylindrical portion 44b positioned outside is inserted into the drum D, and the cylindrical portion 44a and the small-diameter cylindrical portion 45 are used so as to be positioned outside the drum D. At this time, it goes without saying that the screw of the tightening handle 47 is screwed into the screw hole 48 at the shaft end via the washer 46 and fixed.

  FIG. 11 shows another embodiment of the braking portions 6 and 6, and with respect to a horizontal axis (outer shaft in the same embodiment) 51 formed near the upper portion of the swing frame 5 in the first embodiment. A rectangular plate-like braking part 6 having a cylindrical part 52 fitted on this is fixed by a fixing lever 7 in an arbitrary posture so that it can freely move in the axial direction and change its angle in the axial direction.

  FIG. 12 shows still another embodiment of the braking portions 6 and 6. The braking portions 6 and 6 shown here are formed near the upper portion of the swing frame 5 shown in the first embodiment. Both end portions of the horizontal axis (outer shaft in the embodiment) 51 are in direct contact with the side plates d and d of the drum D. In such a case, since the entire length of the horizontal shaft 51 can act as a braking portion, braking is performed even on the drum D having a narrow interval between the side plates d and d as in the drum D of FIG. There is an advantage in that adjustment of the parts 6 and 6 is not required at all. Although the horizontal axis 51 is shown as a round bar in the figure, it can be easily understood that it may be a polygonal bar such as a hexagonal bar or a square bar or a plate.

  Although the embodiments considered to be representative of the present invention have been described above, the present invention is not necessarily limited only to the structures of these embodiments, and includes the structural requirements referred to in the present invention, and achieves the object referred to in the present invention. However, the present invention can be implemented with appropriate modifications within the range having the effect. Further, it goes without saying that the cable drawing stand according to the present invention can also be applied to drawing of a wire wound with a drum such as a wire other than a cable.

The perspective view which shows the use condition of 1st Example. The front view of the state just before use. The front view of the use condition. The same side view. The perspective view of the same non-use state. The front view. The same side view. The exploded perspective view of each part. The front view which shows the 2nd usage example. The side view which shows the 2nd usage example. The partial perspective view explaining the 2nd example. The perspective view explaining the 3rd example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Base 2 Vertical frame 3 Upper horizontal axis 4 Middle horizontal axis 5 Oscillating frame 52 Horizontal shaft 53 Cable contact part 54 Lower frame 55 Horizontal bar 6 Braking part c Cable D Cable winding drum d Drum side plate f Outer peripheral surface s Cable Passage space

Claims (2)

A base 1, a vertical frame 2 raised from the base 1, a substantially parallel horizontal shaft 3, 4 projecting in a horizontal direction from an upper part of the vertical frame 2 and a middle part in the height direction, and an upper part The intermediate part horizontal shaft 4 is set at a height position where the cable winding drum D can be rotatably supported, and the swinging frame 5 is swingably suspended from the horizontal shaft 3. The frame 5 comes into contact with the horizontal rod 52 provided with the braking portions 6 and 6 that come into contact with the outer peripheral surfaces f and f of the side plates d and d in the cable winding drum D, and the cable c that is drawn during the cable drawing operation. A cable drawing stand including a cable contact portion 53 for separating the braking portions 6 and 6 from the outer peripheral surfaces f and f of the drum side plates d and d. The cable according to claim 1, wherein the swing frame (5) is formed in a substantially U shape, and includes a horizontal bar (55) having a cable contact portion (53) across the cable passage space (s) at the upper portion of the lower frame (54). Drawer stand.