JPH0687596A - Winding device for double sheave drum - Google Patents

Abstract

PURPOSE:To enable smooth work without special tension from the outside during wire cable winding-delivery work by winding the wire cable alternately onto a pair of sheave drums, and finally passing the wire cable between a V-groove type sheave and the groove of a pressing roller for use. CONSTITUTION:A second shaft 2 and a third shaft 3 are rotated in the same direction as a first shaft 1, driven by a motor, through gears 4, 5, 6 or chain driving. A wire cable 15 is passed between a U-groove or V-groove type sheave 7 and a pressing roller 13 and then between the inner groove of a rear sheave drum 10 and a pressing roller 14 so as to be wound downward, and further passed between a front sheave drum 9 and the pressing roller 13 from the lower side of the front sheave drum 9 so as to be wound inside. In this method, the wire cable 15 is wound alternately around the front and rear drums and finally passed between the U-groove or V-groove type sheave 8 and the pressing roller 14 for use.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a winch without a conventional pulling device.

[0002]

2. Description of the Related Art Conventionally, a double sheave winch has been developed because the wire cable (15) does not take up more weight.

[0003]

The conventional double sheave winch has the following drawbacks. (B) A winder for winding was required on the puller side. (B) When there is no winder, a pulling device is attached or a manual pulling method is used. (C) The wire cable (15) could not be wound or unwound when there was no load. The present invention was developed to eliminate these drawbacks.

[0004]

A second shaft (2) rotated by a gear or chain drive by a first shaft (1) being driven.
And wire cable (15) to the third axis (3) respectively
One-way clutch (11) (1) on the winding or unwinding side of
2) A U-groove or V-groove type sheave (7) (8) having a built-in 2) is attached, and a U-groove or V-groove type sheave (7) (8) is attached to its second shaft (2) and third shaft (3). The sheave drums (9) (10) having a plurality of U-grooves or V-grooves smaller than the outer diameter are fixed, and the sheave drums (9) (10) and the U-grooves or V are fixed.
A double sheave drum type winch having a structure in which roller (13) (14) for suppressing a wire cable (15) is mounted on or near the upper side of groove type sheaves (7) (8).

[0005]

[Operation] The wire cable (15) is fed in from the upper groove of the U-groove or V-groove type sheave (7) for the pressing roller (13), and the sheave drum (10) and the pressing roller (14) in the same row on the rear side Thread the sheave drum (9) through the upper gutter.
The sheave drum (10) and the sheave drum (9) are wound into the upper groove of the pressing roller (13) from the lower groove on the same row side of
And the wire cable (15) at the end.
It is used by passing through the groove or the groove of the V-groove type sheave (8) and the pressing roller (14).

[0006]

Embodiments of the present invention will be described below. (A) A first shaft (1) driven by a prime mover drives a gear (4) (5) (6) or a chain drive to a second shaft (1). (2) and the third shaft (3) are rotated in the same direction. (B) One-way clutch (11) inside the second shaft (2)
A U-groove or V-groove type sheave (7) having a built-in is fixed and a sheave drum (9) is fixed in parallel. Further, a U-groove or V-groove type sheave (8) having a built-in one-way clutch (12) is fixed on the outer side of the third shaft (3), and then a sheave drum (10) is fixed on the outer side thereof. In step (10), a double sheave drum is formed. (C) Sheave drum (9) on the second shaft (2) side and U groove or V
Top of grooved sheave (7) or wire cable (15)
The pressing roller (13) is attached to one of the passages so that the pressing force can be freely adjusted. Similarly the third axis (3)
Side sheave drum (10) and U-groove or V-groove type sheave (8)
The restraining roller (14) is attached to either the upper part of the shaft or the passage of the wire cable (15) so that the restraining force can be freely adjusted.

According to the present invention, when the wire cable (15) having the above structure is used, the wire cable (15) is passed through between the U-groove or V-groove type sheave (7) and the pressing roller (13) and the rear sheave drum (15) is provided. It winds down between the inner groove of 10) and the suppression roller (14), and it winds up between the suppression roller (13) from the lower side of the front sheave drum (9), and it is made to the front and rear drums by the same method. It is used by passing it between the U-groove or V-groove type sheave (8) and the pressing roller (14) at the end of alternately winding. At the time of winding the wire cable (15), tension is not applied to the wire cable (15) at first, and the sheave drum (9) has this structure even when there is no load.
When the sheave drum (10) and the sheave drum (10) rotate at the same time, the one-way clutch (11) on the retracting side is released and is in the neutral state, and the one-way clutch (12) on the last retracting side works to loosen the wire cable (15). There is no occurrence. Also, when the wire cable (15) is fed in reverse, the one-way clutch (12) on the pull-in side is released to become a neutral position, and the one-way clutch (11) on the pull-out side operates to move the sheave drum (9) ( The tension of the wire cable (15) of 10) is automatically adjusted so that no loosening occurs. Even if there is tension in the winding and feeding, the function of the restraining rollers (13) (14) and the sheave drum (9)
The wire cable (15) is actuated by the action of the U-groove or V-groove sheaves (7) and (8) larger than the outer diameter of (10) and the wire clutches (11) and (12) assembled therein.
It is possible to smoothly carry out the feeding operation.

[0008]

In the case of the conventional double sheave winch, the back tension tension is always required at the time of winding or unwinding work. Without this tension, the wire cable (15) is loosened and cannot be wound. In this state, it was impossible to feed or wind the wire under no load, and all the causes were solved by the present invention. The cable wire (15) is less damaged and the winch work is safe. Is improved and workability and economic efficiency are improved.

[Brief description of drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a side view of the present invention.

[Explanation of symbols]

 1 1st axis 2 2nd axis 3 3rd axis 4 Gear 5 Gear 6 Gear 7 Groove type sheave 8 Groove type sheave 9 Sheave drum 10 Sheave drum 11 One-way clutch 12 One-way clutch 13 Suppression roller 14 Suppression roller 15 Wire cable 16 Winch frame

Claims (1)

[Claims] 1. A wire cable (1) is provided to each of a second shaft (2) and a third shaft (3) which are rotated by a first shaft (1) driven by a winch frame (16) as a shaft.
One-way clutch (11) on the winding or feeding side of 5)
U-groove or V-groove type sheave with built-in (12) (7) (8)
Attached to the second shaft (2) and the third shaft (3) of the U-groove or V-groove type sheaves (7) (8) having a plurality of U diameters smaller than the outer diameter.
A sheave drum (9) (10) having a groove or V-groove type is fixed, and a wire cable () is provided on the sheave drum (9) (10) and the U groove or V-groove type sheave (7) (8) or around the upper part thereof. 15) Holding rollers (13) (14) for restraining the wire cable (15) when the coil is wound and unwound and the tension of the wire cable (15) is maintained and the wire cable (15) when no load is applied.
Winding device for double-sheave drum characterized by a mechanism that facilitates winding and unwinding