JP2579393Y2 - Winding drum - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winding drum for winding and feeding ropes and the like.

[0002]

2. Description of the Related Art A take-up winch is provided with a driving means for rotating a take-up drum, and the drive means drives and winds or feeds a rope or an electric wire. Here, depending on the content of the work,
In some cases, it is necessary to replace the drum that performs winding or the like. Therefore, the winding drum is provided detachably with respect to the output shaft provided in the driving unit. In some cases, the winding drum is configured to be dividable so that only the wound rope or the like is replaced without replacing the winding drum.

Here, the winding drum can be divided,
Further, as shown in FIG. 2, a winding drum configured to be freely attached to and detached from the driving means is used. The winding drum is configured such that a drum 20 composed of a first drum member 21 and a second drum member 22 is locked on an output shaft 2 connected to a driving means (not shown) so that a rope or the like can be used. Take up and send out. Here, a boss 21d is provided at the center of the first drum 21 of the drum 20 so as to protrude from the first drum 21.
The second drum member 22 is inserted. First drum member 21
And the second drum member 22 are connected to the core member 22 of the second drum member.
c is fitted to the drum fitting hole 22a provided on the end face of the first drum member, and the drum fitting projection 21a provided on the end face of the core portion 21c of the first drum member is fitted. 22 is held without rotating. A male screw 21f is formed on the outer periphery of the tip of the boss 21d protruding from the flange member 22b of the second drum member 22, and the second drum member 22 is sandwiched between the first drum member 21 by a nut 23. You.

The output shaft 2 is inserted into a through hole 21e provided at the center of the boss 21d, and the flange 2b and the output shaft 2
Nut screwed into the male screw 2c formed at the tip of the nut 24
And attached to the output shaft 2. Here, the output shaft fitting projection 2a is provided on the flange 2b.
Is fitted to the output shaft fitting hole 21b provided in the end face of the first drum member 21g, so that the output shaft 2
Is transmitted to the drum 20 to take up a rope or the like.

[0005]

However, in the above-mentioned winding drum, when the first drum member 21 and the second drum member 22 are combined, the male screw 21f projecting from the end face of the flange 22b of the drum 20 is used. Alternatively, the width of the drum 20 increases by the height L1 of the nut 23.
Further, when the drum 20 is attached to the output shaft, the size of the male screw 2C or the height of the nut 24 further protruding increases, and the dimension of L2 from the flange end face 22b of the drum 20 increases. As a result, the shape and dimensions when the drum 20 is removed become large, and the weight becomes heavy, so that carrying becomes difficult. In addition, there has been a problem that the mounting dimensions when mounted on the output shaft become large, and the winding winch becomes large. Furthermore, when mounting on the output shaft, it is necessary to match the positions of the output shaft fitting projection and the output shaft fitting hole.

The present invention has been made in view of such a problem, and in a winding drum that can be divided, the size of the drum can be reduced, and the mounting size when the drum is mounted on a rotating shaft is also reduced. Can be
It is another object of the present invention to provide a winding drum that can be easily attached to a rotating shaft.

[0007]

In order to achieve the above object, a drum comprising a first drum member which can be inserted into and removed from a rotary shaft and a second drum member which can be detachably attached to the first drum member. Engage with the spline formed at the tip of the rotating shaft. Then, the first drum member inserted into the rotating shaft is maintained by the drum holding member, and the first drum member is maintained inserted by the drum fixing member provided on the inner circumference between the left and right flanges of the drum. The first drum member and the second drum member are fixed.

[0008]

In such a winding drum, the transmission of the driving force with the rotating shaft is performed by the spline, so that the positioning at the time of mounting can be easily performed. Further, since the fixing of the dividable drum and the attachment to the rotating shaft are performed by the drum fixing member and the drum holding member provided on the inner periphery of the drum, the outer dimensions of the winding drum can be reduced.

[0009]

FIG. 1 shows a preferred embodiment of the present invention.
This will be described with reference to FIG. The drum 10 includes a first drum member 11 and a second drum member 12, and a spline groove meshing with a spline 1 a formed at the tip of the output shaft (rotating shaft) 1 is formed in the center of the first drum member 11. Are formed. Further, a holding pin insertion portion 1c having a diameter smaller than the outer diameter of the spline 1a is formed at the tip of the spline 1a, and a through hole 1d for a holding pin into which a drum holding pin (drum holding member) 14 can be inserted is formed. Is provided. A so-called B pin is used as the drum holding pin 14, and a pin longer than the outer diameter of the spline 1a is used.

The first drum member 11 includes a first drum core 11b formed in a truncated cone shape and a flange 11f. The first drum core 11b has two drum fixing members on its end face. Bolt 11a is welded. The second drum member 12 includes a second drum core 12 formed in a truncated cone shape.
b and a flange portion 12f.
A through hole 12c into which the drum fixing bolt 11a is inserted is provided on an end surface of the 2b. Further, a spacer 13 composed of two spacer members 13a and 13b is provided between the first drum member 11 and the second drum member 12. The flange portions 13c, 13 of the spacer 13
d are also provided with through holes 13e and 13f, and the first and second drum cores 11b and 12b are sandwiched by the flanges 13c and 13d of the spacer 13 between the end surfaces of the first drum core 11b and the second drum core 12b. Drum member 11 and second drum member 1
2 is provided with a spacer 13.

First drum member 11 and second drum member 12
Is fixed by screwing a fixing nut (drum fixing member) 15 to the second drum member locked to the drum fixing bolt 11a. The fixing nut 15 is provided with a handle 15a so that the fixing nut 15 can be freely attached and detached without using a tool. The fixing nut 15 is formed to have a shape that fits into the inner periphery of the second drum core 12b (the inner periphery between the left and right flanges of the drum) when screwed together. And
An opening 12a is provided in the end face of the flange portion 12f of the second drum member 12, and the fixing nut 15 can be freely attached and detached.

The winding drum configured as described above is
A description will be given of a case where a rope is wound by being attached to an output shaft 1 provided in a winch (not shown). First, by screwing the fixing nut 15,
A spline 1a formed at the tip of the output shaft 1 is meshed with a spline groove provided at the center of the integrally formed drum 10, and a flange 1b provided on the output shaft 1 Insert until it comes into contact with the flange 11f.

The distance from the tip of the spline 1a to the flange 1b is formed substantially equal to the sum of the thickness of the spacer 13 and the end faces of the core portions 12b of the first drum member 11 and the second drum member. Therefore, the holding pin insertion portion 1c projects to the inner periphery of the second drum member 12, and the drum holding pin 14 is inserted into the holding pin through hole 1c.
The winding drum 10 is held with respect to the rotating shaft 1 by being inserted into the rotating shaft 1. Here, the insertion / removal of the drum holding pin 14 is performed from the opening 12a of the second drum member.

In the drum 10 attached to the rotating shaft 1, when the output shaft 1 is rotated and the rope is wound up, and then only the rope is removed, the operator needs to remove the second drum member. By inserting a hand through the opening 12a and rotating the handle 15a of the fixing nut 15, the fixing nut 15 is removed, and the second drum member 12 is removed.
Is removed from the first drum member 11.

At this time, the core portion 11b of the winding drum,
Even when the rope is tightly wound around the drum 12b, the second drum member 12 can be easily removed because the core 12b is formed to have a tapered shape toward the center of the drum 10. Can be. And the first
Since the core portion 11b of the drum member 11 is also formed into a taper so as to become thinner toward the center of the drum 10, the wound rope can be easily removed. Therefore, after removing the entire drum 10 from the output shaft 1, there is no need to disassemble the drum 10 and remove the rope, and the rope can be removed only by removing the second drum member 12.

The removal of the drum 10 from the output shaft 1 can be easily performed by removing the drum holding pin 14. Therefore, not only after the second drum member 12 is detached but also in a state where the second drum member 12 is attached, the operator can open the first drum member 1 with the opening 1.
The drum 10 can be removed by inserting a hand from 2a and pulling out the drum holding pin 14.

When the drum 10 is mounted on the output shaft 1, the spline 1a is engaged with a spline groove provided in the first drum member 11, and the drum holding pin 14 is inserted into the holding pin through hole 1d. Do. Here, since the output shaft 1 is provided with six spline teeth, it is possible to easily position the splines when the drum 10 is mounted.

[0018]

As described above, in the winding drum of the present invention, the drum including the first drum member which can be inserted into and removed from the rotary shaft and the second drum member which can be detachably attached to the first drum member. Is engaged with a spline formed at the tip of the rotating shaft. Then, the first drum member inserted into the rotating shaft is maintained by the drum holding member, and the first drum member is maintained inserted by the drum fixing member provided on the inner circumference between the left and right flanges of the drum. The first drum member and the second drum member are fixed. As a result, even when the drum is attached to or removed from the rotary shaft such as a winch, the outer dimensions of the drum are reduced and the weight is reduced because there is no protrusion from the end face of the flange portion of the drum. Is done. For this reason, portability becomes easy, and attachment / detachment to a rotating shaft can be performed easily.

[Brief description of the drawings]

FIG. 1A is a sectional view of a winding drum according to the present invention, and FIG. 1B is a perspective view of a spacer 13;

FIG. 2 is a sectional view of a winding drum according to a conventional example.

[Explanation of symbols]

 1, 2 Output shaft (rotary shaft) 1a Spline 10, 20 Drum 11, 21 First drum member 12, 22 Second drum member 14 Drum holding pin (drum holding member) 15 Fixing nut (drum fixing member)

Claims (1)

(57) [Scope of request for utility model registration] A rotating shaft having a spline formed at a tip thereof; a first drum member meshing with the spline and detachable from the rotating shaft; and a second drum member detachably attached to the first drum member. A drum holding member that maintains an inserted state of the first drum inserted into the rotating shaft; a first drum member and a second drum that maintain the inserted state of the first drum member A winding drum having a member fixed thereto and a drum fixing member provided on an inner periphery between left and right flanges of the drum, and a rope wound on the drum by attaching and detaching the second drum. A take-up drum, wherein the take-up drum can be freely attached and detached, and the drum can be freely inserted and removed from the rotary shaft by attaching and detaching the drum holding member.