JPH0455031Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field The present invention relates to a power transmission device for a mechanical winch.

(2) Prior Art and Its Disadvantages In a conventional tension line winch, for example, as shown in FIG. 1, a winch section 31 and a prime mover section 32 are integrally grounded on a winch base 33.

In this case, when installing the winch section 31 on the ground, install a branch line that is suitable for the winch tension, so if there is no place to take the branch line, manually dig a hole in the ground and install the branch line with the stand. There is a need for facilities. Alternatively, the weight is placed on the ground, a branch line attached to the weight is attached to the weight, and the winch portion 31 is fixed to perform work.

Therefore, since most of the work sites in particular are carried out in the mountains, transportation and installation by machinery is not possible, and the work described above is carried out manually, resulting in very poor work efficiency and the disadvantages of occupational accidents. have

(3) Problems to be solved by the invention In view of these points, the present invention proposes a winch power transmission device in which the winch fixing method is rationalized by using a flexible shaft for the winch part and the prime mover part. The main purpose is to

(4) Embodiment An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a diagram showing an example of the present invention. Input shaft 15 of winch section 45 and output shaft 2 of prime mover section 19
0 through a flexible shaft 21. Removable flexible shaft 2
Reference numeral 1 is for power transmission, and is called a flexible shaft, which is a flexible rotating shaft that can freely transmit high rotational force by changing its direction in any direction.

FIG. 3, FIG. 4, and FIG. 5 are a plan view, a side view, and a longitudinal sectional view showing an example of the winch portion. 1 indicates a capstan, which is fitted onto the outer shaft 8. A worm wheel 14' is fitted onto the outer shaft 8, and the worm wheel 14' is meshed with a worm gear 14 connected to the input shaft 15 within the gear box 13. An input shaft 15 of an external motor is connected to the worm gear 14 .

The outer shaft 8 is hollow, and the inner shaft 9 is inserted into it.
are rotatably fitted. A slipping clutch 5 is interposed between the outer shaft 8 and the inner shaft 9 to transmit power.

3 indicates an acute deep groove sheave, which is attached concentrically to the side surface of the capstan 1. That is, a one-way clutch 4 is provided on the inner shaft 9, and the acute angle deep groove sheave 3 is configured to rotate in synchronization with the capstan 1 in one direction (winding direction), but to rotate freely in the opposite direction (feeding direction). be done. In this case, the groove diameter of the acute angle deep groove sheave 3 is
The wire winding diameter is set to be larger than the wire winding diameter.

A sheave arm 18 is located in front of the acute angle deep groove sheave 3.
is provided on the base 16, and the wide sheave 2 is pivotally supported. The acute angle deep groove sheave 3 and the wide sheave 2 are arranged so that grooves provided on their circumferences coincide with each other, and a rope is wound around both grooves.

The acute angle deep groove sheave 3 is provided with a pressing roller 6 that engages with the groove. The pressing roller 6 is connected to the biasing spring 11 and the pedal arm 1.
0, it is always in contact with the groove of the acute angle deep groove sheave 3. A bent tubular wire guard 12 is provided on the upper surface of the base 16 for post-processing of the wire. A groove larger than the diameter of the wire rope is formed in the upper part of the wire guard 12, so that the wire rope can be freely removed. 7 indicates a pedal.

Therefore, when in use, as shown in FIG.
5 is fixed to the leg of the steel tower 26, power is transmitted by the flexible shaft 21, although the axial directions do not match. That is, when the prime mover section 19 rotates, power is transmitted through the clutch 22, and while changing speed with the change lever 23, the shaft inside the flexible shaft 21 is rotated.
This means that power can be transmitted to the winch section 45.

Specifically, a wire rope introduced from the top of the capstan 1 is wound several times and pulled out from the bottom of the capstan 1, and is then passed upward from the bottom of the wide sheave 2 provided at the front, and is then wrapped around the wide sheave 2 provided on the side of the capstan 1. The wire is placed over the upper part of the sharp-angled deep groove sheave 3, and the tail wire is introduced into the lower wire guard 12.
The wide sheave 2 is located between the capstan 1 and the acute deep groove sheave 3, and is particularly wide in order to facilitate winding the wire rope from the capstan 1 to the acute deep groove sheave 3.

In this case, the wire pressing roller 6 biased by the spring 11 engages with the groove of the acute deep groove sheave 3 and constantly presses the wire rope against the groove of the deep groove sheave 3.

Capstan 1 is driven and moves to the winding side (second
When rotated to the solid line A) in the figure, the capstan 1 and the acute deep groove sheave 3 rotate at the same time and at the same speed due to the action of the one-way clutch 4. In this case, since the circumferential speed of the acute deep groove sheave 3 is higher than the circumferential speed of the capstan 1, slipping occurs on the acute angle deep groove sheave 3 side. Therefore, back tension can be generated in the wire rope at all times.

Furthermore, during the feeding operation, when the capstan 1 rotates toward the feeding side, the one-way clutch 4 built into the capstan 1 becomes free, and the acute angle deep groove sheave 3 is connected to the inner shaft 9, so that it is not wound around the capstan 1. Since friction is applied to the sharp-angled deep groove sheave 3 by the operation of the slipping clutch 5, the wire is unreeled while constantly generating back tension.

Further, by depressing the pedal 7 of the pedal arm 10, the pressing roller 6 releases the pressing friction action of the wire rope wound around the acute deep groove sheave 3, so that the pressing roller 6 moves to the desired position of the acute deep groove sheave 3 from the side. It can be easily wrapped around and removed from other wire ropes.

(5) Structure and effect of the invention As described above, according to the invention, the outer shaft that transmits power to the capstan and the one end of the inner shaft that is fitted with the outer shaft are attached via a one-way clutch, and An acute angle deep groove sheave with a groove diameter larger than the groove diameter, a wide sheave provided to match the groove of the acute angle deep groove sheave, and the outer and inner shafts are designed to transmit power via a slipping clutch. The capstan winch part and the prime mover part are connected by a removable flexible shaft to transmit power.The winch part and the prime mover part are connected by a removable flexible shaft. By attaching only the section to the steel tower support, there is no need to prepare branch line facilities, counterweights, etc., and work can be started easily. There is no need to consider any special fixing method for the prime mover section, as long as it is grounded on the ground. The removable flexible shaft allows the prime mover to be operated in any position.

The winch and motor parts can be separated, making it easy to carry.

Therefore, winch installation is easy and workability and safety are improved.

Further, according to the present invention, an acute angle deep groove sheave is attached via a one-way clutch to the outer shaft that transmits power to the capstan and one end of the inner shaft fitted with the outer shaft, and is set to have a groove diameter larger than the winding diameter of the capstan. In a capstan winch, the one-way clutch has a wide sheave provided in line with the groove of an acute deep groove sheave, and the outer shaft and inner shaft are configured to transmit power through a slipping clutch. The winch part and the prime mover part are separated, and the winch part and the prime mover part are separated, and the winch part and the prime mover part are separated, and the function is to synchronize the capstan and the acute deep groove sheave when rotating the capstan, and the function to make the acute deep groove sheave rotate idly with respect to the capstan when the capstan is fed out. Because the shaft connects the two and transmits power, unlike the conventional method of holding the back tension manually or using a separate mechanical device linked to the capstan, the back tension is coaxially integrated with the capstan. With this, the hand-handling operation can be performed mechanically, so there is less tension due to manual work, and the work can be performed extremely easily and safely. In addition, each component can be easily assembled and disassembled, making it easy to move, transport, and install, and its light weight saves labor, so it can be used not only for power transmission and distribution work, civil engineering construction work, but also for forestry, fishing, etc. This effect can be demonstrated in industrial cargo handling.

[Brief explanation of the drawing]

FIG. 1 is a diagram showing a conventional example, FIG. 2 is a diagram showing an embodiment of the present invention, FIGS. 3, 4, and 5 are diagrams showing an example of the winch section, and FIG. It is a figure which shows the example of use of an invention. 15... Input shaft, 19... Prime mover section, 20...
Output shaft, 21...Flexible shaft, 45
...Winch section.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. An acute angle groove that is attached via a one-way clutch to the outer shaft that transmits power to the capstan and one end of the inner shaft that is fitted with the outer shaft, and is set to have a groove diameter larger than the winding diameter of the capstan. deep groove sheave,
The wide sheave is aligned with the groove of the acute-angle deep groove sheave, and the outer and inner shafts are flexible enough to allow the capstan winch section and prime mover section to be removed so that power is transmitted through a slipping clutch. - A winch power transmission device characterized by being connected by a shaft to transmit power. 2. The one-way clutch described above has the function of synchronously rotating the capstan and the acute deep groove sheave when the capstan is being taken up, and the function of causing the acute deep groove sheave to rotate idly relative to the capstan when the capstan is being fed out.Remove the winch section and the prime mover section. A power transmission device for a winch according to claim 1, which is connected to a flexible shaft to transmit power.