JPS6337690Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an improvement of an electric lifting device, particularly a winding drum.

[Conventional technology]

Figures 5 to 7 are diagrams showing a conventional electric lifting device disclosed in, for example, Japanese Utility Model Application Publication No. 57-90511, in which 1 is a winding drum around which a wire 2 is wound; Rotating operation is performed by the device 3. Reference numeral 4 denotes a load suspended from a wire 2 wound around a pulley 5. Reference numeral 6 denotes a wire guide fitting provided on the winding drum 1, which is swingably supported by a metal fitting 7a attached to a frame 7.

The conventional electric lifting device is constructed as described above, and the load 4 is lifted and lowered by moving the wire 2 through the guide fitting 6.
The wires 2 are wound onto or sent out onto the winding drum 1 via the guide fittings 6, so that the wires 2 can be wound around the drum 1 in an aligned manner.

[Problem that the invention attempts to solve]

In the conventional electric lifting device as described above, friction occurs at the contact portion of the wire 2 with the guide fitting 6, causing unnecessary load force on the wire and damaging the wire 2 and the guide fitting 6. .
Further, if a damaged one is used as is, the wire 2 may get caught on the guide fitting 6 or become slack, and the wire will not be able to be wound in alignment with the drum 1. Furthermore, if the wires 2 are not aligned and wound around the drum when the load 4 is lowered, there is a problem that the wires will be damaged by impact.

This invention was made in order to solve this problem, and the object is to obtain an electric lifting device that can wind wires in alignment on a drum without damaging the wires.

[Means for solving problems]

The electric lifting device according to this invention is provided with a support on the winding drum, a guide roller that guides the wire just before being wound onto the drum, and a guide roller that is in rotational contact with the roller to guide the wire just before being wound on the drum. It is equipped with rotating rollers that hold down the wire.

[Effect]

In this invention, the wire is wound up and sent out in contact with the guide roller, but the frictional resistance can be reduced, thereby preventing damage to the wire and making it possible to wind the wire around the drum in an aligned manner.

〔Example〕

1 to 4 are views showing one embodiment of this invention, and reference numerals 1 to 5 are the same as the conventional one shown in FIG. 5. Reference numeral 8 denotes a support located on the wound wire of the winding drum 1, and is swingably supported by a metal fitting 7a attached to the frame 7. A rotatable guide roller 9 is supported on the support 8 and has a length substantially equal to the winding width of the drum 1, and guides the wire 2 just before being wound onto the drum; 10 is also supported on the support 8. It is a rotating roller that contacts the guide roller 9 and the wire wound on the drum 1.

In the electric lifting device configured as described above, when the wire 2 is wound up or sent out, the guide roller 9 rotates in the running direction of the wire while contacting the wire, so that the frictional resistance exerted on the wire is small. On the other hand, since the rotating roller 10 rotates while holding the wire 2 wound around the drum 1, there is also almost no frictional resistance with the wire 2, and the wire can be wound around the drum 1 in an aligned manner. .

[Effect of idea]

As explained above, this device is equipped with a guide roller that guides the wire just before it is wound onto the drum, and a rotating roller that comes into rotational contact with this roller and presses down the wire that is wound on the drum. The wire can be wound in alignment on the drum without damaging the wire during winding or feeding. Also, there is an effect that there is no impact caused by wear or loosening of the wire.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing an embodiment of this invention.
Figure 2 is a plan view of the winding drum, Figure 3 is a side sectional view of the main parts, Figure 4 is a perspective view of the same, Figure 5 is a side sectional view of a conventional electric lifting device, and Figure 6 is a side sectional view of the drum. FIG. 7 is a sectional view showing the winding operation of the wire. 1... Winding drum, 2... Wire, 4...
Load, 5... Pulley, 8... Support, 9... Guide roller, 10... Rotating roller. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Scope of utility model registration request] In an electric lifting device that lifts and lowers a load by winding a suspended load onto a winding drum that is electrically driven via a pulley and feeding and winding the wire, the winding drum is provided with a support. a guide roller having a length substantially equal to the winding width of the drum and guiding the wire just before winding onto the drum; and a guide roller in rotational contact with the roller;
An electric lifting device characterized in that it is equipped with a rotating roller that presses down the wire wound around the drum.