JPH0626527Y2 - Drum for linear material - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a linear material drum suitable for winding or drawing out linear materials such as wires, ropes, cables and hoses. .

(Prior Art) As a prior art, FIG. 3 shows a cable drum for winding a cable. In the figure, reference numeral 1 denotes a drum portion, which is made of a hollow cylindrical body, and the outer peripheral surface thereof is a cable winding surface 1A. 2 and 2 are the drum part 1
A pair of flange portions fixedly opposed to each other in the axial direction of each of the flange portions 2, each flange portion 2 is formed of an annular flat plate body having an opening 2A at the center, and the openings 2A and 2A communicate with each other through the inside of the drum portion 1. It is in a state of being.

The cable drum of the prior art is roughly constructed as described above, and the cable A is wound around the cable winding surface 1A of the drum portion 1 located between the pair of collar portions 2 and 2.

(Problems to be Solved by the Invention) In the above-described cable drum, since the cable A is directly wound around the cable winding surface 1A of the drum portion 1, the cable A in the wound state is pulled out. In some cases, the cable drum itself must be rotated in place.

Therefore, as shown in the figure, from the inside of the drum portion 1 to the collar portion 2,
The support rod 3 is inserted through the respective openings 2A of
The cable drum is rotatably placed by horizontally extending both ends of the cable drum to support legs 4 and 4 such as jacks so that the cable drum is separated from the ground.

Also, attach a drum support to the rear of the work vehicle,
A cable drum is also rotatably supported by the drum support.

However, in the former prior art that uses the support rod 3 and the support legs 4 and 4, since the cable drum in which the cable A is fully wound is heavy, the cable drum is used when the number of workers is small. Is difficult to install on the support legs 4 and 4, and there is a risk that the support leg 4 may fall due to a pulling force while the cable A is being pulled out and the cable drum may roll.

On the other hand, the latter conventional technique using a work vehicle equipped with a drum support is used for a specific linear material,
There is a problem that it is not general.

The present invention has been made in view of the above-mentioned drawbacks of the prior art, and it is possible for one person to safely and easily take up and draw out linear material that is extremely heavy when wound on a drum. The present invention provides a linear material drum capable of performing the above.

(Means for Solving the Problem) Means of the present invention configured to solve the above-mentioned problems are as follows. A drum body has a fixed drum portion formed of a hollow cylindrical body having axially open ends, and the fixed drum portion. Of a pair of collar portions fixed in a state of being opposed to each other in the axial direction, a plurality of linear material sliding contact members extending in the radial direction are circumferentially spaced on the inner facing surface of the collar portion, The rotating drum portion loosely fitted to the outer periphery of the fixed drum portion has at least a pair of metal strip plates formed in an annular shape having a diameter larger than that of the fixed drum portion, and both ends in the longitudinal direction are fixed to the outer surface of the strip plate. And a drum part that is arranged in a row in the circumferential direction of the strip plate and is composed of a plurality of outer plates that form a cylindrical body as a whole, and that supports the rotating drum part so as to be rotatable with respect to the drum body. The support mechanism includes a retainer fixed to the fixed drum portion and an inside of the retainer. And a rolling element rotatably supported on the strip plate,
The drum part support mechanism comprises a plurality of drum part support mechanisms that are spaced apart from each other in the circumferential direction of the drum body.

(Operation) According to the above-mentioned configuration, even if the drum body is left on the ground or the like, as a result of the rotating drum portion rotating, the linear material can be wound and pulled out. Since the linear material is in linear contact with the linear material sliding contact member, there is almost no frictional resistance,
It can be smoothly wound up and pulled out.

(Embodiment) An embodiment of the present invention will be described in detail below with reference to FIGS. 1 and 2.

In the figure, 11 is a drum main body, and the drum main body 11 is composed of a fixed drum portion 12 formed of a hollow cylindrical body having both axial ends open, and an annular flat plate body having a circular hole 13A at the center thereof. A pair of flange portions 13 and 13 (one of which is not shown) fixed to the axial ends of 12 so as to face each other.
The conventional cable drum can be used as it is for the drum body 11 of the present embodiment.

Reference numerals 14, 14 and 14 denote three cable sliding contact members that are fixed to the inner facing surfaces 13B of the flange portions 13 and 13 in the radial direction at intervals of 120 degrees in the circumferential direction. The member 14 is a semi-cylindrical body made of metal or synthetic resin whose outer surface is smoothed so that the cable A can slide easily.

Reference numeral 15 denotes a rotating drum portion that is loosely fitted around the fixed drum portion 12. The rotating drum portion 15 is a pair of metal strip plates 16, 16 formed in an annular shape having a larger diameter than the fixed drum portion 12.
(However, one of them is not shown) and bolts and nuts 17 and 1 on the outer surfaces of the pair of strips 16 and 16 at positions on both ends in the longitudinal direction.
, And a plurality of laterally long rectangular outer plates 18, 18 ... Forming a cylindrical body as a whole by being arranged in a row at appropriate intervals in the circumferential direction.
A cylindrical cable winding surface 15A is formed by the entire outer surfaces of the outer plates 18, 18, ....

Further, reference numerals 19, 19, ... Show four drum part supporting mechanisms for rotatably supporting the rotating drum part 15 with respect to the drum body 11. Reference numeral 20 denotes each drum supporting mechanism 19
The cage 20 comprises a substantially U-shaped metal member having outwardly bent fixing pieces 20A, 20A at both ends. Reference numeral 21 denotes a rolling element fitted in the retainer 20 so as to be rollable. The rolling element 21 has a difference in length between the outer diameter of the fixed drum portion 12 and the inner diameter of the band plate 16 arranged concentrically. It consists of a sphere with a diameter.

Reference numerals 22 and 22 (one of which is not shown) are a pair of attachments for fixing the drum portion support mechanism 19 having the above-described configuration to both ends of the fixed drum portion 12 in the axial direction and at positions separated by 90 degrees in the circumferential direction. Show brackets. The mounting bracket 2
Reference numeral 2 is an integral body of a pair of arcuate half-split members 22A, 22A and a plurality of fixing pieces 22B, 22B, ... Is formed in.

The mounting bracket 22 is formed into an annular shape by a pair of half-split bodies 22A and 22A by screwing each fixing piece 22B to the outer peripheral surface of the fixed drum portion 12, and four drums on one side and eight drums on both sides. The part support mechanisms 19, 19 ... Are fixed to the pair of mounting brackets 22, 22 with screws.

The cable drum of this embodiment is constructed as described above in detail, and its operation will be described below. First, the drum body 11 is directly installed on the ground, and the drum body 11 is positioned in front of and behind the collar portion 13 and an appropriate stopper member such as a square bar is sandwiched between the drum body 11 and the ground so as to prevent the drum body 11 from rotating back and forth.

Thereafter, when the cable A is wound, the cable A is wound around the cable winding surface 15A of the rotating drum portion 15 and the rotating drum portion 15 is rotated in the winding direction, so that the cable A can be easily wound. Can be wound around.
On the other hand, when pulling out the cable A, the rotating drum portion 15 rotates only by pulling the cable A in the pulling direction, so that the cable A can be pulled out easily.

Then, according to the present embodiment, each collar portion 1 of the drum body 11 is
Cable slide contact members 14, 14, 14 are provided on the cable 3, and the cable A is prevented from directly contacting the flange portion 13 so that the cable A can be smoothly wound and pulled out.

Moreover, since the rolling bodies 21 rotate on the strip plates 16 and 16, the rotating drum portion 15 can smoothly rotate.
Further, since the left and right eight drum part supporting mechanisms 19, 19, ... Are attached to the fixed drum part 12 side to reduce the weight of the rotating drum part 15, workability can be improved.

Although the embodiment of the present invention is as described above, the existing cable drum can be used as the drum body 11, and the mounting bracket 22 can be attached to the drum body 11 from the outside.
Since it suffices to assemble, it can be implemented at a relatively low cost.

In the embodiment, four drum supporting mechanisms 19 are provided on one side, but five or more drum supporting mechanisms 19 may be provided. Further, as the rolling element 21 of the drum part support mechanism 19, rollers can be used instead of balls.

Further, although the drum part support mechanism 19 is described as being arranged at both axial ends of the fixed drum part 12, the strength of the rotating drum part 15 can be enhanced by providing the drum part supporting mechanism 19 also at the intermediate part in the axial direction.

(Effects of the Invention) The present invention is as described above in detail, and has the following effects.

(1) Since the rotating drum portion that rotates in a state where the linear material is wound around the drum body is provided, unlike the conventional technique, the heavy linear material drum is floated from the ground. As a result, it is possible to completely eliminate a fall accident during work, and a single worker can easily and efficiently take up and draw out the linear material.

(2) Since the rolling element of each drum supporting mechanism is configured to roll on the annular band plate, the rotating drum can be rotated without uneven rotation, and the linear material Winding up and pulling out can be done smoothly.

(3) When the linear material sliding contact members are circumferentially spaced from each other on the inner facing surfaces of the pair of flange portions so that the linear material is in line contact, the linear material is in direct contact with the flange portion. Friction resistance can be significantly reduced compared to, winding of linear material,
You can smoothly withdraw. Therefore, since an unreasonable pulling force does not act on the linear material drum, it is possible to reliably prevent an accidental fall of the linear material drum during withdrawal, and it is possible to enhance the safety of the work.

(4) Since the plurality of drum supporting mechanisms are fixed to the drum body side and the rotating drum is lightened, it does not require a large force for winding and pulling out the linear material and is excellent in workability. ing.

(5) Use the existing cable drum for the drum body,
Since it can be used only by providing the linear material sliding contact member on the flange portion, the existing cable drum can be effectively used and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a vertical cross-sectional view of a cable drum according to an embodiment of the present invention, and FIG. 2 is an enlarged cross-sectional view of an essential part of FIG. 1 seen from the side.
FIG. 3 is an explanatory view of a usage state of a cable drum according to the related art. 11 ... Drum body, 12 ... Fixed drum section, 13 ...
Collar part, 14 ... Cable sliding contact member, 15 ... Rotating drum part, 16 ... Strip plate, 18 ... Outer plate, 19 ... Drum part supporting mechanism, 20 ... Cage, 21 ... Rolling element , A ... Cable

Claims (1)

[Scope of utility model registration request] 1. A drum body is composed of a fixed drum portion formed of a hollow cylindrical body having axially open ends, and a pair of flange portions fixedly opposed to both axial ends of the fixed drum portion. A plurality of linear material sliding contact members extending in the radial direction are circumferentially separated from each other on the inner facing surface of the flange portion, and the rotating drum portion loosely fitted to the outer periphery of the fixed drum portion is larger than the fixed drum portion. At least a pair of metal strips formed in an annular shape with a diameter, and a plurality of metal strips that are arranged in a row in the circumferential direction of the strips with both ends in the longitudinal direction fixed to the outer surface of the strips to form a cylindrical body as a whole. A drum part support mechanism, which is composed of a single outer plate and rotatably supports the rotating drum part with respect to the drum body, is a retainer fixed to the fixed drum part, and is rotatable in the retainer. A drum that is freely supported and that rolls on the strip plate; Arranging a plurality of line-like material drum comprising spaced in the circumferential direction of the support mechanism the drum body.