JPS6231693A - Wire winder for electric type lifting gear - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wire winding device for an electric lifting device.

[Conventional technology]

Figures 5 and 6 show a side sectional view and a plan view of a conventional electric lifting device disclosed in, for example, Japanese Utility Model Application Publication No. 56-9613. In the figures, 1 is the cover of the device, and 2 is the ,
a reversible motor; 3 a winding drum connected to the drive shaft of the motor 2; 4 a wire rope having one end fixed to the winding drum 3 and the other end fixed to the lifting section 5; 5 a wire rope; The elevating part 6, which is fixed and fixes the elevating object, is a pulley around which a wire 4 is wound.

In the electric lifting device as described above, the electric lifting device is attached to the ceiling, the object attached to the lifting section 5 is lowered for inspection, and then raised again. The motor 2 includes a switch that can be switched in three stages: up, off, and down, and a take-up driver 3 that forms an electric circuit with the motor 2 and is connected to the drive shaft of the motor.
rotates to let out the wire rope 4, and the elevating section 5 can be lowered via the pulley 6. Moreover, in order to raise the elevating part 5,
Similarly to lowering, when the switch is set to the upward side, the motor 2 rotates, the wire rope 4 is wound around the winding drum 3, and the elevating section 5 rises.

[Problem that the invention seeks to solve]

The conventional electric lifting device is constructed as described above, and when the wire tape 4 is wound around the winding drum 3 via the pulley 6, the pulley 6 moves from the center to both ends as shown in FIG. For example, as shown in Figure 9, the wire rope 4 is wound around the center of the drum 3 in order starting from fa), but as shown in (g), the ropes slip down without overlapping and are wound on top of it. If the winding is repeated repeatedly, the winding will become disordered as shown in Figure 8. As a result, there have been problems such as the wires being loosely wound and the wires being easily caught together when being pulled out.

This invention was made in order to solve the above-mentioned problems, and provides a wire winding device for an electric lifting device in which the wire rope can be wound in a straight line starting from the end of the winding drum. The purpose is to obtain.

[Means for solving problems]

The wire winding device according to the present invention includes a winding drum in which the end of the drum is the beginning of wire winding, a wire groove is spirally formed on the drum surface, and a tapered pulley that tapers gradually from the center to both sides. Consisting of

[For production]

In the wire winding device of the present invention, when winding a wire rope, the wire enters the spiral wire groove, and the taper of the pulley allows the wire to be wound in a normal line adjacent to the previously wound wire.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings.

1 and 3 are front views of a winding drum and a pulley, and the same parts as in the conventional one shown in FIGS. 7 and 8 are denoted by the same reference numerals. Reference numeral 7 denotes a fixing hole for the wire rope 4 provided at one end of the winding drum 3. From this fixing hole 7, a spiral wire groove 8 is formed on the drum surface so that the outer diameter of the wire touches the drum surface as shown in FIG. It is formed. On the other hand, the pulley 6 has a tapered surface 6a whose diameter gradually decreases from the center to both sides.

In the wire winding device configured as described above, the wire rope 4 is wound in a regular line along the wire groove 8 from the wire fixing hole 7 at the end of the winding drum 3, and when it reaches the final end, the wire rope 4 is wound in a straight line along the wire groove 8. As shown in Fig. 4 (, 1), the wire rope 4 is caused to act in the direction of arrow A by the pulley 6, and is wound while being pressed against the adjacent wire, and when it reaches the end again, as shown in Fig. 4 (
As shown in bl (, 1), the wire ropes 4 are wound while being pressed in the direction of arrow B by the pulley 6, and the state of (a) is repeated again after passing through (b), and the wire ropes 4 are stacked on the drum in a normal line. Ru.

〔Effect of the invention〕

As explained above, according to the present invention, the winding drum is provided with a spiral wire groove, and the pulleys are formed in a tapered shape that gradually becomes thinner from the center to both sides. The wire ropes can be stacked and wound in a straight line, thereby ensuring smooth operation of the lifting device without the wires being loosely wound or getting caught in each other when being let out.

[Brief explanation of drawings]

FIG. 1 is a front view of a winding drum according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of the main parts, and FIG. 3 is a front view of a pulley.
4(a) to 4(e) are front views showing the operation of winding a wire rope around a winding drum, FIGS. 5 and 6 are a side sectional view and a plan view of a conventional electric lifting device, FIG. 7 is a front view of a conventional pulley, FIG. 8 is a front view of the wire being wound around the winding drum, and FIG. 9 is an explanatory diagram showing the state in which the wire is being wound. 3... Winding drum, 4... Wire rope, 6...
Pulley, 7. wire fixing hole, 8. wire groove. Note that the same reference numerals in the figures indicate the same or equivalent parts.

Claims (1)

[Claims] A winding drum is connected to the drive shaft of a motor, and has a winding start point at the end of the drum, and a spiral wire groove circumscribed to the wire diameter on the drum surface, which tapers gradually from the center to both sides. A wire winding device for an electric lifting device consisting of a pulley that acts as a shaft and winds the wire in regular rows along the wire groove of a winding drum.