JP4863722B2 - Cable drum transport direction change device - Google Patents

Description

The present invention relates to the conveying direction changing equipment which can be switched easily transported direction of the heavy carrying while rolling mainly by human power as a cable drum.

Metal cables and optical fiber cables are shipped from a manufacturer in a state of being wound around a cylindrical body of a cable drum, and a user who purchases the cables is stored outdoors or indoors in a storage place. Since this cable drum is a heavy object of about 1 ton, when it is moved by human power, it is moved while being pressed and rolled by a plurality of people. This work is not only heavy labor, but often causes injuries such as being caught in a disk-like flange at the end of the cable drum.
In addition, when carrying or unloading cable drums indoors as a storage location or indoor construction site, a protective plate such as plywood is laid on the floor surface to prevent damage to the floor surface of the transportation route. Curing work is required. However, since a protective plate is placed over the entire range of the transportation route, it takes a lot of time, labor and cost for the preparation work before the start of transportation and the removal work after the completion of transportation. Deterioration has caused problems such as an increase in accident rate due to transportation.

  Furthermore, in the process of transporting while pushing the cable drum along a path with a limited width such as an indoor corridor, if there is a corner or a curved part in the transport path, it is necessary to change the transport direction of the cable drum. However, conventionally, it has been necessary to rotate the cable drum on the protective plate with 3 to 4 people, which has been a work with high fatigue and danger. Further, when the direction is changed on the protective plate, the protective plate becomes extremely painful, and in some cases, the floor plate itself may be damaged. Furthermore, since there are many cases where the peripheral wall surface is damaged by the cable drum in the process of changing the direction, it is necessary to lay a protective plate on the wall surface.

  Japanese Patent Application Laid-Open No. 7-157201 (Patent Document 1) and Japanese Patent Application Laid-Open No. 8-253154 (Patent Document 2) disclose a carriage on which a flange portion of a cable drum is placed and which can be moved by a wheel provided at the bottom. However, this cart has a complicated structure and high cost, and in the case where a plurality of cable drums are continuously and manually transported, the cart is assembled in advance for all the cable drums. This is necessary, and the number of carts to be prepared increases, resulting in an increase in cost. If only one (or a pair) of carts is used to handle a large number of cable drums, it is necessary to attach and detach the carts for each cable drum, which makes the work extremely complicated. In particular, there is a problem that workability as a whole is inevitably lowered because the work of putting the cable drum on the carriage or removing it from the carriage is complicated.

  In addition, when the cable drum is mounted on the bogie, the bogie portion protrudes more outward than the side surface of the flange portion of the cable drum. There is a problem that it cannot be used. Furthermore, even when the direction is changed in the narrow conveyance route, there is a problem that the carriage portions protruding from both side surfaces of the cable drum cannot be rotated due to an obstacle.

In addition, in the invention of Patent Document 1, it is necessary to change the direction after removing the flange portion from one of the trolleys that individually support both flange portions when changing the direction. There is a risk that scratches are likely to be formed on the floor surface by the flange portion that is grounded. Even if the plywood is laid on the floor surface, the entire load is applied locally to one of the flange portions, so that the plywood is often damaged and the floor surface is often damaged.
In addition, the invention of Patent Document 2 is configured such that the caster at the bottom of the carriage is capable of changing the direction of 360 degrees. May bring.
JP-A-7-157201 JP-A-8-253154

As described above, in the conventional cable drum transport device, the cost of the device is increased, the work for attaching and detaching the cable drum is complicated, the transport is impossible when transporting a narrow transport route, and the direction change is not possible at the direction changing portion. There was a problem such as.
The present invention has been made in view of the above, and when transporting a heavy cable drum along a straight path having a limited width, the transport direction is changed while being pressed and rolled by human power. If only using this device installed in turning point to, and its object is to provide a conveying direction changing equipment that can be easily converted to the conveying direction of the cable drum coming continuously transported.

In order to achieve the above object, a transport direction changing device according to the invention of claim 1 is a cable drum comprising a barrel portion around which a cable is wound and disk-like flange portions provided at both axial end portions of the barrel portion. A direction-of-conveyance device comprising: a disk-shaped turntable that rotates by placing two flange portions of the cable drum; and a polygonal base portion that rotatably supports the turntable. An apparatus main body, and a slope base that detachably contacts an appropriate position on the outer peripheral edge of the base portion, and has an inclined surface for loading and unloading the cable drum on the rotating base, and the base portion outer peripheral surface; Each of the slope bases is provided with a locking portion for positioning and fixing, which can be concavo-convexly fitted and detachable .

Conveying direction changing apparatus according to the second aspect of the present invention, according to claim 1, wherein the upper surface of the turntable, characterized by being configured in a concave shape.

According to the present invention, an apparatus main body including a disk-shaped turntable that rotates by placing two flange portions of a cable drum, and a base portion that rotatably supports the turntable; And a slope base with an inclined surface that allows the cable drum to be detachably brought into contact with an appropriate position on the outer peripheral edge and carry the cable drum onto and out of the turntable. When changing the carrying direction in the process of carrying along, the carrying direction of the cable drum can be easily changed by one person .

Hereinafter, the present invention will be described in detail with reference to embodiments shown in the drawings.
1A and 1B are a plan view and a front longitudinal sectional view (AA sectional view) showing a configuration of a cable drum transport direction changing device according to an embodiment of the present invention, and FIG. And (d) are a plan view of a base portion constituting the apparatus main body and a bottom view of the turntable. Moreover, Fig.2 (a) and (b) are the top views and front views which show the structure of the modification of the conveyance direction change apparatus of this invention. FIGS. 3A and 3B are a front view and a plan view showing a procedure for changing the conveyance direction of the cable drum using the conveyance direction changing device.

The transport direction changing device 1 is a means used to change the transport direction when transporting the cable drum 30 while being pushed by human power. The cable drum 30 that is an object of the transport direction change is a metal cable, Weight of several hundred kg to 1 ton comprising a barrel 31 around which cables C such as an optical fiber cable are wound, and a large-diameter, disc-shaped flange portion 32 integrated at both axial ends of the barrel 31 It is a thing. The cable drum 30 is usually made of wood and can be transported by rolling with the outer peripheral surfaces of both flange portions 32 in contact with the ground as shown in FIG.
The transport direction changing device 1 includes a disk-shaped turntable 3 that rotates by placing the outer peripheral surfaces of the two flange portions 32 of the cable drum 30, and a base portion 11 that rotatably supports the turntable 3. The apparatus main body 10 is provided with an inclined surface 21 that is detachably abutted to an appropriate position on the outer peripheral edge of the base portion 11 and that is used when the cable drum 30 is carried in or out of the turntable 3. The slope table 20 is provided.

  Although various types can be assumed as the structure of the base part 11 and the structure for rotatably supporting the turntable 3 by the base part 11, the base part 11 of the present embodiment has a circular outer peripheral contour shape on the upper surface. A circular recess 12 is provided. A disk-shaped turntable 3 is fitted in the recess 12 so as to be rotatably supported. That is, a bearing portion 13 which is a cylindrical recess (or protrusion) is provided at the center of the recess 12, and a shaft portion (or recess) formed at the center of the bottom surface of the turntable 3 with respect to the bearing portion 13. The shaft-shaped bearing portion 4 is fitted and rotatably supported. Further, if necessary, a circular groove 14 concentric with the bearing portion 13 is provided on the bottom surface of the recess 12, and a caster 5 (or a roll which is fitted into the circular groove 14 and rolls on the bottom surface of the turntable 3. , Ball bearings, etc.). The caster 5 is supported by the support portion provided on the ceiling surface of the cylindrical groove 3a provided on the bottom surface of the turntable so that the caster 5 can freely rotate and can change the direction within a range of about 90 degrees. It is possible to stably move in the circular groove 14 according to the rotation around the bearing portion 13 and guide the rotation of the turntable 3.

By the rotation mechanism using the bearing portion 13 and the casters 5, the direction of the cable drum can be easily changed by the force of one worker even when the heavy cable drum is mounted on the turntable.
The upper surface of the turntable 3 is configured such that the central portion is curved (or inclined in a tapered shape) lower than the outer peripheral edge portion, so that the cable when the flange portion of the cable drum 30 is placed. The drum should not be displaced or dropped on the upper surface of the turntable 3.
The material and structural strength of each of the above-described components are selected and configured so as to sufficiently cope with the load and impact from the cable drum 30 which is a heavy object.

  The slope table 20 has a wedge-shaped vertical cross-sectional shape, and has an end surface 22 that can be brought into close contact with the outer peripheral surface of the base portion 11. In this example, since the outer peripheral surface of the base portion 11 is circular, the end surface 22 of the slope base 20 is an arcuate surface having a shape that can be in close contact with the outer peripheral surface of the base portion. In addition, the contact portion between the slope base 20 and the base portion 11 is configured so that a large step (unevenness is not formed) so that the cable drum moving between the inclined surface 21 and the upper surface of the turntable can be smoothly guided. In addition, it is possible to detachably attach the concave and convex portions between both surfaces in order to maintain the fixing force between the end surface 22 of the slope base and the outer peripheral surface of the base and prevent the occurrence of displacement and dropping as necessary. It is preferable to provide a locking portion or a locking portion by a locking pin (illustrated in Fig. 2) The slope base 20 can be attached to and detached from an arbitrary position on the outer peripheral surface of the base portion, It is configured so that the direction can be changed according to the change in the traveling direction of the cable drum.

Alternatively, the slope base 20 is connected by a guide rail (not shown) provided on the outer peripheral surface of the base portion 11 and configured to be movable in the circumferential direction along the outer peripheral edge (outer peripheral surface) of the base portion 11. You may comprise so that the circumferential direction position of the slope base with respect to can be changed easily.
The outer peripheral contour shape of the base portion 11 does not have to be circular, and may be a quadrangle or other polygonal shapes as shown in FIG. When the outer peripheral contour shape of the base portion 11 is a polygonal shape, the shape of the end surface 22 of the slope table 20 may be changed so as to be in close contact with the outer peripheral contour shape of the base portion. In this example, a locking portion 23 for positioning and fixing the slope base with respect to the base portion 11 is provided.

Since the rotation trajectory of the cable drum on the turntable 3 is constant and does not wobble from side to side, the work can be performed so as not to collide with surrounding walls. Further, since the flange portion does not come into contact with the floor surface when the cable drum rotates, the protective plate laid on the floor is not damaged.
One direction changing device of the present invention may be prepared, and it is economical because the direction changing device may be moved and used every time the cable drum reaches the direction changing point.

Next, the usage method of the conveyance direction change apparatus 1 shown in FIG. 1 is demonstrated based on FIG.
When the cable drum 30 is transported by hand along a transportation route having a point 41 where the width and height are limited like the corridor 40 in the building and the direction is changed such as a corner, the direction is The conveyance direction changing device 1 is installed on the floor surface of the turning point 41. As an installation method, the apparatus main body 10 is placed on the floor surface at the intersection of one passage 42 and the other passage 43, and on the side surface of the base portion 11 so that the slope base 20 is positioned in the passage 42 on the carry-in side. Adhere closely. In this state, the cable drum 30 that has been transported through the passage 42 as shown in the figure is pushed up along the inclined surface 21 of the slope table 20 and temporarily stopped on the turntable 3.
In this state, the slope base 20 is moved to the side of the other passage 43 as shown by the chain line in FIG. Since the cable drum 30 on the turntable 3 can be turned 90 degrees toward the passage 43 by rotating in the direction of the arrow, if the operator pushes the cable drum toward the passage 43 after the direction change, the cable drum 30 Can smoothly advance along the inclined surface 21 and complete the direction change.

Next, FIG. 4 is a diagram showing an embodiment for solving a conventional problem caused by installing a protective plate such as a plywood plate along the floor surface of the transport path when the cable drum is moved indoors. is there.
That is, reference numeral 50 denotes a buffer member that is detachably attached to the outer peripheral surface of the flange portion 32 of the cable drum 30. The buffer member 50 is at least formed on an outer peripheral surface of an elastic material such as rubber or resin. ing.
The buffer member 50 includes an annular member 51 that is divided at one place, and an engaging member 55 that connects both ends of the annular member 51 and fixes the annular member 51 to the flange portion 32. The annular member 51 has a U-shaped cross section so that the inner surface thereof can be tightly fitted over the entire outer peripheral surface of the flange portion 32. The engaging member 55 which is a means for fixing the annular member 51 to the flange portion 32 includes, for example, an engaging pin 56 provided at both ends of the annular member 51 and a fastener 57 such as a wire for locking between the engaging pins 56. And having.
The annular member 51 is composed of a plurality of arc-shaped portions such as two or three, and each arc-shaped portion is connected by the engaging member 55 so as to constitute one annular member 51 as a whole. The annular member 51 may be fixed to the flange portion 32 by using the engaging member 55.

In this way, the annular member 51 is attached over the entire circumference of the flange portion 32 in contact with the floor surface and fixed by the engaging member 55, so that the cable drum rolls via an indoor corridor or the like. When transporting, it is not necessary to lay a protective plate on the floor such as a corridor.
On the other hand, the cable drum in which the annular member 51 made of an elastic material is mounted on the flange portion and is securely fixed by the engaging member 55 increases the frictional resistance with the floor surface, and therefore, the direction change may be difficult. However, the direction can be smoothly changed by using the direction changing device 1 of the present invention.

(A) And (b) is a top view which shows the structure of the conveyance direction change apparatus of the cable drum which concerns on one Embodiment of this invention, and front longitudinal cross-sectional view (AA sectional drawing), (c) and (d). These are the top view of the base part which comprises an apparatus main body, and the bottom view of a turntable. (A) And (b) is the top view and front view which show the structure of the modification of the conveyance direction change apparatus of this invention. (A) And (b) is the front view which shows the conveyance direction change procedure of the cable drum which used the conveyance direction change apparatus, and a top view. (A) And (b) is the structure explanatory drawing of the buffer member which concerns on one Embodiment of this invention, and a principal part enlarged view.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Conveyance direction change apparatus, 3 ... Turntable, 3a ... Groove, 5 ... Caster, 10 ... Apparatus main body, 11 ... Base part, 12 ... Recess, 13 ... Bearing part, 14 ... Circular groove, 20 ... Slope stand, DESCRIPTION OF SYMBOLS 21 ... Inclined surface, 22 ... End surface, 23 ... Locking part, 30 ... Cable drum, 31 ... Trunk part, 32 ... Flange part, 40 ... Corridor, 41 ... Direction change point, 42 ... Passage, 43 ... Passage, 50 ... Buffer member 51. Ring member 55. Engaging member 56. Engaging pin.

Claims (2)

A cable drum transport direction changing device comprising: a trunk portion around which a cable is wound; and disc-shaped flange portions provided at both axial ends of the trunk portion;
An apparatus main body comprising: a disk-shaped turntable that rotates by placing two flange portions of the cable drum; and a polygonal base portion that rotatably supports the turntable;
A slope base that is detachably in contact with a suitable position on the outer peripheral edge of the base portion, and that has an inclined surface for loading and unloading the cable drum onto and from the turntable,
A transport direction changing device characterized in that it includes a fixing portion for positioning and fixing that can be detachably fitted between the outer peripheral surface of the base portion and the end surface of the slope base. The transport direction changing device according to claim 1 , wherein an upper surface of the turntable is configured in a concave shape.

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