JPH0710374A - Driving shaft of cable drum - Google Patents

Abstract

PURPOSE:To provide a driving shaft of a cable drum capable of safely performing the support and rotation of this cable drum in a stable manner. CONSTITUTION:Two flanged taper members 17 and 18 are opposedly installed in a position close to both ends of a shaft body whose one end is connected to a driving mechanism. The taper member 17 at the one end side is fixated to the shaft body, while the taper member 18 at the other side is made to be free of movements in the axial direction by a screw type clamping mechanism 19, and the shaft body is inserted into the insertional hole of a cable drum 4, and if it is clamped by both these taper members 17 and 18 from both sides, this shaft body is secured to the cable drum 4 so as to be made up into a concentric form, so that rotation is thus giveable to the drum 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drive shaft for rotating a cable drum for winding and unwinding cables and wires.

[0002]

2. Description of the Related Art In order to wind an electric wire cable, a wire, etc., as shown in FIG. A cable drum 4 having a structure in which a shaft insertion hole 3 is provided in the portion is used.

Conventionally, as shown in FIG. 4, a winding and unwinding device for winding and unwinding a cable by rotating the cable drum 4 has a through hole 3 provided at the center of the cable drum 4 as shown in FIG. Shaft 5 with diameter smaller than 3
The shaft 5 is supported by the struts 6 and 6 to float the drum 4 from the ground, and the cable drum 4 is rotated by the drive roller that is brought into contact with the outer circumferences of the end plates 2 and 2. It was supposed to wind or unwind wire.

[0004]

However, if the shaft 5 has a small diameter with respect to the insertion hole 3, vibration occurs due to the amount of play between the insertion hole 3 and the shaft 5 when the cable drum 4 rotates, and this vibration causes the pillar 6 to be vibrated. There was a danger of falling.

Therefore, an object of the present invention is to provide a drive shaft capable of supporting and rotating a cable drum in a stable manner without the risk of the columns falling over and supporting cable drums having different widths and insertion holes. To do.

[0006]

SUMMARY OF THE INVENTION In order to solve the above problems, the present invention is directed to a taper member having a flange at a position near both ends of a shaft body for removably connecting one end to a drive mechanism. Are installed so that the small diameter sides face each other, the taper member on one end side is fixed to the shaft body, and the taper member on the other end side is attached to and removed from the shaft body and movable in the axial direction. A screw type tightening mechanism for axially moving the taper member is provided on the other end side of the main body.

[0007]

[Operation] The taper member on the other end side of the shaft main body is removed, the shaft main body is inserted into the center insertion hole of the cable drum from the other end side and penetrated, and the taper member is attached to the other end side of the shaft main body. By operating the tightening mechanism and bringing the taper members on both sides closer, the taper member sandwiches the cable drum from both sides, the taper part is press-fitted into the insertion holes of both end plates, and the shaft body is coaxial with the cable drum. Immobilize in a shape.

By thus supporting both ends of the shaft main body fixed to the cable drum with jacks and connecting one end of the shaft main body to the drive mechanism, the drum is rotated integrally with the shaft main body so that the cable and the wire are connected. You can wind up and unwind.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, the cable drum 4 is as described in the section of the prior art, and the same parts are designated by the same reference numerals and description thereof will be omitted.

As shown in FIGS. 1 and 2, the drive shaft 11 that supports the cable drum 4 and provides rotation is longer than the width of the drum 4 and penetrates the center portion of the drum 4 along the insertion hole 3. The drive mechanism 1 is attached to one end of the shaft body 12
3 is fixed by a flange 16 which is connected to the output shaft 14 of the shaft 3 through a universal joint 15.
A screw type tightening mechanism 19 for moving the taper member 18 in the axial direction is provided on the other end side of the.

The shaft body 12 is formed by using a metal pipe for weight reduction, and the taper members 17 and 1 are provided on the outer periphery of the shaft body 12 at positions near both ends.
8 is formed by providing a taper portion 21 having a plurality of different diameter portions on one surface side of the flange 20, and the taper members 17 on both sides are formed.
And 18 are attached to the shaft body 12 with the tapered portions 21 facing each other.

The taper member 17 located on one end side of the shaft body 12 is fixed to the shaft body 12 by welding, and the portion between the flange 16 and the taper member 17 on one end side of the shaft body 12 is a supported portion 23 by a jack 22. Become.

The taper member 18 located on the other end side of the shaft body 12 is welded and fixed to the tip of a short pipe 24 which is externally fitted to the shaft body 12, and is inserted into and removed from the shaft body 12 in the axial direction. Can be moved freely.

As shown in FIG. 3, the tightening mechanism 19 for moving the taper member 18 in the axial direction has a nut 25 fixed inside the shaft body 12 and a square screw screwed into the nut 25 inside the short pipe 24. The shaft 26 is rotatably attached, and a handle 27 is fixed to the square screw shaft 26 at the end of the short pipe 24. The rotation of the square screw shaft 26 by the handle 27 forms the short pipe 24 and the taper member 1.
8 moves integrally in the axial direction, and when the square screw shaft 26 is separated from the nut member 25, the taper member 18 can be pulled out from the shaft body 12 together with the short pipe 24.

The short pipe 24 serves as a supported portion 28 of the jack 22, and the jack 22 is provided with a rod 30 that moves up and down by hydraulic pressure supply / discharge to a cylinder 29 standing upright on the ground as shown in FIG. A pair of rollers 31 that rotatably support the supported portion 23 or 28 of the shaft 11 and an upward U-shaped guide 32 that holds the supported portion 23 or 28 so as not to separate from the roller 31. Is provided.

The shaft of the present invention has the above-described structure. In order to rotate the cable drum 4 to wind and unwind the cable or wire, first, the taper member 18 on the other end side of the shaft body 12 is first provided. Is removed, the shaft body 12 is inserted into the insertion hole 3 of the cable drum 14 and penetrated, and the taper member 17 on one end side is inserted into the insertion hole 3 of the one end plate 2.

Next, the taper member 18 and the short pipe 24 are externally fitted to the other end of the shaft body 12, the square screw shaft 26 is rotated by the handle 27 and screwed into the nut 25, and the taper member 18 is attached to the end plate. When the square screw shaft 26 is further rotated in a state of being moved toward 2, and fitted in the insertion hole 3, both taper members 17 and 18 approach each other and clamp the cable drum 4 from both sides to tighten it. The shaft body 12 and the drum 4 are fixed coaxially.

After that, when the jacks 22, 22 arranged at both ends of the shaft 11 are extended, the jacks 22, 2 are
Reference numeral 2 is a supported portion 23, 28 which lifts the shaft 11 rotatably and floats the drum 4 from the ground.

When the drive mechanism 13 is connected to one end of the shaft 11 via the universal joint 15 and the motor of the drive mechanism 13 is started, the drum 4 rotates integrally with the shaft 11, and the rotation of the drum 4 causes the cable to rotate. It is possible to wind or unwind wire.

When the drum 4 is rotated, the shaft 11 fixed to the drum 4 is rotated, so that stable rotation can be obtained without any vibration.

Further, when the shaft 11 and the drum 4 are fixed, the taper member 18 on the other end side can be adjusted in position in the axial direction, so that the drums having different widths can be fixed without any trouble within the adjustment range. It

Further, the taper members 17, 18 are shown in FIG.
As shown in (B) and FIG. 3, since the taper portion 21 fixed to the flange 20 is formed of the small diameter portion 21a, the taper portion 21b and the large diameter portion 21c, the insertion hole 3 provided in the cable drum 4 is formed. Even if the diameters of the
As shown in (B), it can be coaxially supported at any part.

[0024]

As described above, according to the present invention, since the cable drum is coaxially fixed at the center of the insertion hole so as to rotate, the rattling occurs when the cable drum rotates. In addition, the drum support during rotation is stable and there is no danger of falling.

Further, since the taper members on both sides have variable facing intervals, the cable drums having different widths can be fixed to the shaft body, and the taper members provided on both sides of the shaft body can change the diameter of the insertion hole. It can also be supported on a drum.

[Brief description of drawings]

FIG. 1 is a front view showing a usage state of a shaft according to the present invention.

FIG. 2A is a front view of the shaft, and FIG. 2B is an enlarged vertical sectional view of the one taper member in the same.

FIG. 3 is an enlarged cross-sectional view showing the other taper member of the shaft.

FIG. 4 is a vertical cross-sectional view showing a conventional drum support structure.

[Explanation of symbols]

 3 Insertion Hole 4 Cable Drum 11 Shaft 12 Shaft Main Body 13 Drive Mechanism 16 Flange 17, 18 Taper Member 19 Tightening Mechanism 20 Flange 21 Tapered Part

Claims (1)

[Claims] 1. A taper member with a flange is provided at a position near both ends of a shaft main body, one end of which is detachably connected to a drive mechanism, so that the small diameter side faces each other, and the taper member on one end side is provided on the shaft main body. The taper member on the other end side is attached so that it can be inserted into and removed from the shaft body and moved in the axial direction freely, and the screw type tightening that moves the taper member to the other end side of the shaft body in the axial direction. A drive shaft for a cable drum, which is provided with a mechanism.