JPH0463000B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (1) Field of Industrial Application The present invention relates to a capstan winch that automatically winds up and lets out the tail wire of the capstan winch to handle the tail wire.

(2) Conventional technology and its disadvantages Conventionally, the butt wire fed out from a capstan winch has been handled manually, but this is a very dangerous work, especially when reversing the winch. If the person handling the shitte does the work in the wrong order, he or she may be instantly caught in the process and lose his or her life. Therefore, as a method that does not use a tail wire, there is a method of winding the tail wire around a drum using a reel method.

Recently, a device has been developed that is installed independently at the rear of the capstan and works in conjunction with the capstan to wind and unwind the butt wire while always providing the necessary back tension to maintain tension. There are two types of structures: one that uses upper and lower links to generate tension from the gripping butt, and another that uses the frictional force of groove wheels. In the latter, the rotation of a friction wheel for applying frictional force is adjusted by operating a relief valve via a fluid drive circuit.

However, the method or mechanism for constantly applying back tension to the capstan is complex and often fails in a way that cannot be easily repaired. Especially in the latter case, when the fluid drive circuit breaks down, it is extremely difficult to rely on a specialist immediately. The disadvantage is that the operating rate decreases.

In addition, when winding wire, etc. with a capstan winch, if there is no load on the end of the wire, etc., and the wire is sagging overall, when winding it as it is, the winding position of the wire, etc. wound around the capstan may shift from the center to the left or right. A moving phenomenon occurs. The reason for this is that the capstan has an outer periphery with a concave center like a spool, and one side of the wire, etc. is wound with tension and the other side is not, so the side where the wire, etc. is wound is the capstan. This is because it is located at the smallest diameter position. As a result, the wire, etc. may shift from the specified position of the capstan, and if left as it is, it may cause the winding to become disordered, making it impossible to wind the wire, etc. normally after the fact, or causing an accident in which the wire, etc. comes off from the capstan. .

(3) Problems to be Solved by the Invention In view of the above, the present invention mechanically constitutes means for constantly applying back tension when winding the capstan, thereby preventing wires, etc. from winding disorderly around the capstan. To propose a capstan winch that facilitates repair in the event of a breakdown, reduces the overall storage volume by making the tail handle mechanism coaxial with the capstan, and prevents wires etc. from coming off the capstan during operation. The main purpose is

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

FIG. 1, FIG. 2, and FIG. 3 are a plan view, a side view, and a vertical sectional view showing an example of the present invention. 1 indicates a capstan, which is fitted onto the outer shaft 8. A worm wheel 14' is fitted to the outer shaft 8,
The worm wheel 14' is a worm gear 1 connected to an external drive shaft 15 via a reduction gear 19.
4 and is meshed within the gear box 13. An external driving shaft 15 is connected to the worm gear 14 . The outer shaft 8 is hollow, and the inner shaft 9 is rotatably fitted therein.

3 indicates an acute deep groove sheave, which is attached concentrically to the side surface of the capstan 1. That is, a slipping clutch 34 whose frictional force can be adjusted is provided on the inner shaft 9, and a first one-way clutch 31 is attached between the inner shaft 9 and the capstan 1 via a side plate 1a. In this case, the groove diameter of the acute deep groove sheave 3 is set larger than the wire winding diameter of the capstan 1.

The first one-way clutch 31 is installed so that it operates in a locking manner when the capstan 1 rotates in the winding direction (forward rotation), and rotates freely when it rotates in the reverse direction. Therefore, during normal rotation, the acute deep groove sheave 3 rotates in synchronization with the driving direction of the capstan 1 in one direction (winding direction), but rotates idly in the opposite direction (feeding direction).

Between the opposite side of the inner shaft 9 and the casing 33,
A second one-way clutch 32 is provided. The second one-way clutch 32 acts in the opposite direction to the first one-way clutch 31, and rotates freely when the capstan 1 rotates in the winding direction (forward rotation), and when it rotates in the reverse direction, it rotates freely between the capstan 1 and the casing 33. It is installed so that it is locked.

Therefore, the acute angle deep groove sheave 3 during normal rotation
rotates synchronously with the capstan 1 in one direction (winding direction), but in the opposite direction (feeding direction) it is locked by the second one-way clutch 32 and rotated by the slipping clutch 34. When a certain frictional force is exceeded, the acute deep groove sheave 3 rotates with respect to the inner shaft 9. Incidentally, the frictional force of the slipping clutch 34 can be set to about 60 kg-m.

In FIG. 2, the acute angle deep groove sheave 3 is provided with a pressing roller 6 that engages with the groove. The pressing roller 6 is biased by the biasing spring 1.
1 and the pedal arm 10 are constantly 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. wire guard 12
A groove larger than the diameter of the wire rope is formed in the upper part of the wire rope so that the wire rope can be freely removed. 7 indicates a pedal.

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

The small sheave 2 is attached to a shaft 41 via a one-way clutch 42 and a slipping clutch 43, as shown in FIGS. 4, 5, and 6. A V-groove pulley 44 is fixed to the shaft 41 at a position halfway through which the wire or the like to be wound is wound by the capstan 1 from the active side.
The V-groove pulley 44 is rotated synchronously with the rotation of the sheave 2. The one-way clutch 42 is attached so that it rotates freely during forward rotation when the wire etc. are wound by the capstan 1, and so that the shaft 41 and sheave 2 are locked during reverse rotation. The slipping clutch 43 is adjusted to provide a constant frictional force.

Therefore, when the wire or the like is reversed, additional frictional force is generated by the sheave 2, so that if the frictional force by the acute angle deep groove sheave 3 is insufficient, it will be supplemented.

The V-groove pulley 44 has brackets 45 and 46 rotatably attached to the sheave arm 18.
A sheave 47 supported by is opposed. Wires and the like are regulated between the V-groove pulley 44 and the sheave 46 and sent to the capstan 1. The sheave 47 is connected to the recesses 45a of the brackets 45 and 46,
Since it is supported in a fitted state by 46a, it becomes easy to pinch wires and the like. Incidentally, after the wire or the like is clamped, it is tightened from both sides to the brackets 45 and 46 by lock nuts 48 to prevent it from coming off easily.

Reference numeral 51 indicates a roller, and the roller 51 is supported by a shaft 52 attached to the brackets 45 and 46. A wire or the like is also sandwiched between the roller 51 and the sheave 47, but since the sheave 47 can actually be removed, the wire and the like can be easily sandwiched. A tension spring 53 is provided between the shaft 52 and the sheave arm 18, and the sheave 47 can rotate around the V-groove pulley 44 to prevent wires and the like from getting caught in the capstan 1 while remaining loose. It is configured as follows.

Therefore, when a load is applied to the working end of the wire, etc., the wire, etc. is under tension, so when winding it up with the capstan 1, it is necessary to
As shown in the figure, the sheave 47 is almost in the upper position, but when the capstan 1 winds up the wire etc. with no load applied to the active end side, the sheave 47 is in the spring position as shown by the two-dot chain line in Figure 6. 53 along the outer periphery of the V-groove pulley 44, the wire etc. sandwiched between the sheave 47 and the roller 51 eliminates the slack generated between it and the capstan 1 and obtains an appropriate tension state. It turns out.

61 indicates a press roller; the press roller 61
is rotatably attached to a lever 62 about the shaft 53. The roller 61 is formed in a shape that almost matches the groove of the V-groove pulley 44,
A tension spring 64 provided between the bracket 46 and the shaft 63 of the roller 61 keeps the V-pulley pressed into the groove of the V-groove pulley 44 at all times. 65 indicates a grip.

Therefore, the friction of the wire, etc. regulated by the V-groove pulley 44 will increase due to the pressure of the roller 61, so when the wire, etc. is wound around the capstan 1, the roller 61 is used when it is slack. By doing so, it is possible to prevent wires and the like connected to the capstan 1 from being rolled up in a loose state.

Next, the operation of the present invention will be explained. First, the sheave 47 is removed and the wire is inserted, and the wire rope introduced from the top of the capstan 1 is wound several times and pulled out from the bottom.
Sharp deep groove sheave 3 provided on the side of the capstan 1
Wire guard 1 from the top of the wire guard 1
2. Introduce the Shitte wire. The double sheave 2 is
It is located between the capstan 1 and the acute angle deep groove sheave 3, and is particularly designed to be of a two-row type in order to facilitate winding the wire rope from the capstan 1 to the acute angle deep groove sheave 3. 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.

In this case, when the capstan 1 is driven and rotates toward the winding side (solid line A in FIG. 2) when there is no load on the action side of the wire, etc. when winding the capstan, the slack wire, etc. is pulled out by the tension spring 53. As a result, the sheave 47 and the rollers 51 forcefully rotate about half a turn downward. Therefore, the wires and the like that are wound up by the capstan 1 and the acute deep groove sheave 3 will not rotate due to the action of the slipping clutch 43 when the sheave 44 is smaller than the set friction force. The frictional force due to slipping increases, and eventually
A large tension is generated between the capstan 1 and the sheave 44, and it is possible to prevent the winding disorder when winding into the capstan 1.

On the other hand, 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 normal rotation under a load condition in which a load is applied to the wire, etc., since a greater tension is applied than the tension spring 53, there is always a tension state between the sheave 44 and the capstan 1, and the wire, etc. There is no need to get caught up in the mess of 1.

Next, when the capstan 1 is rotated toward the feeding side in the unloaded state (in the reverse direction), the first one-way clutch 31 built into the capstan 1 becomes free, and the second one-way clutch 32 is locked. The acute angle deep groove sheave 3 is connected to the inner shaft 9 and the slipping clutch 34. Therefore, the wire, etc. wound around the capstan 1 is fed out while constantly generating back tension because friction is applied to the acute angle deep groove sheave 3 by the operation of the slipping clutch 34. .

Since the sheave 2, which rotates as the wire is fed out, rotates clockwise in FIG. 2, the shaft 41 also rotates synchronously due to the action of the one-way clutch 42 in the locked state, and eventually the sheave 44 also rotates in the same direction. It turns out. Therefore, since the sheave 47 is located on the lower side and the amount of movement accompanying the rotation of the sheave 44 is larger than the amount of movement of the wire, etc., the wire between the sheave 44 and the capstan 1 is etc. are always maintained in a tensioned state, and the wires etc. can be prevented from winding disorderly on the capstan 1.

When the end of the wire is loaded during reverse rotation, there is tension throughout the wire, so no winding disorder occurs.

Furthermore, 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 angle deep groove sheave 3, so that the pressing roller 6 moves to the desired position of the acute angle deep groove sheave 3 from the side. It can be easily wrapped around and removed from other wire ropes.

FIG. 7 is a side view showing another example of the present invention.
In addition to the capstan winch, a drive source 17 such as an engine, a centrifugal clutch 23, and a transmission transmission 20 are installed on the channel-shaped base 22. Reference numeral 21 denotes a guide drive coupling, through which the outer shaft 8 is rotationally driven and the capstan 1 is rotationally driven. On the other hand, the acute angle deep groove sheave 3 provided at one end of the inner shaft 9, which is operated via one-way clutches 31 and 32, is rotationally driven via a slipping clutch 34.

The tail end of the wire rope pulled out by the acute angle deep groove sheave 3 and the wire holding roller 6 is guided out of the machine via the wire guard 12 and organized.

(5) Structure and Effects of the Invention As described above, according to the present invention, one-way clutches are attached to both ends of the outer shaft that transmits power to the capstan and the inner shaft that is fitted with the outer shaft, and the winding mechanism of the capstan is An acute angle deep groove sheave with a groove diameter larger than the groove diameter, a sheave provided in line with the groove of the acute angle deep groove sheave, and an acute angle deep groove sheave and the inner shaft are connected to a capstan winch whose power is transmitted via a slipping clutch. In this case, the first one-way clutch is provided between the inner shaft and the capstan, and the second one-way clutch is provided between the casing and the inner shaft, and during winding rotation, the capstan and the acute deep groove sheave rotate synchronously. When the capstan is extended and rotated, the acute-angled deep groove sheave obtains a constant frictional force from the slipping clutch to apply back tension to the capstan. It has characteristics. The weight of the main body is one-third that of a hydraulic type, and from a maintenance perspective, neglecting oil management can cause malfunctions, and maintenance costs are high, and hydraulic parts cannot be arranged immediately. If it is a type, it has a simple structure, so there are fewer breakdowns, and if a problem occurs, anyone can easily repair it.

In addition, unlike the conventional method of holding the back tension manually or using a separate mechanical device linked to the capstan, this method is coaxial with the capstan and can be mechanically operated. In addition to requiring less tension from manual labor, the work can be carried out extremely easily and safely.

Further, according to the present invention, an acute angle deep groove sheave is attached via a one-way clutch to both ends of the outer shaft that transmits power to the capstan and the inner shaft fitted with the outer shaft, and is set to have a groove diameter larger than the winding diameter of the capstan. , a small sheave provided in line with the groove of the acute angle deep groove sheave, the acute angle deep groove sheave and the inner shaft are connected between the capstan and the acute angle deep groove sheave in a capstan winch where power is transmitted via a slipping clutch. A one-way clutch and a slipping clutch are installed on the shaft that supports a small sheave installed in The structure is such that the small sheave does not rotate below the set torque due to the action of the locking mechanism and slipping clutch, so when the wire, etc. is fed out, the wire, etc. wound around the acute angle deep groove sheave is prevented from rotating due to large frictional force. A large load is borne on the sheave arm, and in the worst case, it may break. However, before that happens, the sharp angle deep groove sheave is rotated by the slipping clutch when the load exceeds a predetermined value, causing excessive stress on the wire, etc. Since no tension is applied, damage to the machine can be prevented.

In addition, it has become easy to assemble and disassemble each component, making it easy to move, transport, and install, and because it is lightweight, it saves labor, so it can be used for power transmission and distribution work. It is effective not only in civil engineering and construction work, but also in forestry, fishing, and other industrial loading and unloading operations.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing one embodiment of the present invention, and FIG.
Figure 3 is a side view showing an embodiment of the present invention, Figure 3 is a cross-sectional view of the center of Figure 2 showing an embodiment of the present invention, Figure 4 is a front view showing an example of the sheave structure, Figure 5 is a front view showing an example of the structure of the sheave. The drawings are a sectional view taken along the line ABCDE in FIG. 4, FIG. 6 is a rear view showing an example of a sheave, and FIG. 7 is a side view showing another embodiment of the present invention. 1...capstan, 2...double sheave, 3
...acute angle deep groove sheave, 8...outer shaft, 9...inner shaft,
31...first one-way clutch, 32...second one-way clutch, 33...casing,
34...Slipping clutch, 41...Shaft, 4
2...One-way clutch, 43...Slipping clutch.

Claims (1)

[Scope of Claims] 1. An acute angle deep groove sheave that is attached via one-way clutches to both ends of an outer shaft that transmits power to the capstan and an inner shaft that is fitted with the outer shaft, and that is set to have a groove diameter larger than the winding diameter of the capstan. In a capstan winch in which power is transmitted via a slipping clutch, the first one-way clutch is connected to the inner shaft, and the sheave is aligned with the groove of the acute-angle deep groove sheave. A second one-way clutch is provided between the casing and the inner shaft, and the function is that the capstan and the acute deep groove sheave rotate synchronously during winding rotation, and the second one-way clutch rotates synchronously with respect to the capstan during capstan payout rotation. A capstan winch characterized by an acute angle deep groove sheave having a function of obtaining a constant friction force by a slipping clutch and applying back tension. 2. The capstan winch according to claim 1, wherein a worm gear set is attached to the outer shaft and connected to an engine, a clutch, and a transmission to transmit power. 3 The outer shaft that transmits power to the capstan, the acute-angle deep groove sheave that is attached to both ends of the inner shaft fitted with the outer shaft via one-way clutches, and whose groove diameter is set to be larger than the winding diameter of the capstan; A small sheave installed in line with the groove, an acute angle deep groove sheave, and an inner shaft are used in a capstan winch where power is transmitted through a slipping clutch. A one-way clutch and a slipping clutch are installed on the supporting shaft, and when the capstan is being rotated to take up the capstan, the one-way clutch has a free mechanism that allows the small sheave to rotate freely, and when the capstan is being fed out, the locking mechanism and slipping of the one-way clutch are provided. A capstan winch characterized by a configuration in which the small sheave does not rotate below a set torque due to the action of a clutch. 4 The outer shaft that transmits power to the capstan, the acute-angle deep groove sheave that is attached to both ends of the inner shaft fitted with the outer shaft via one-way clutches, and whose groove diameter is set to be larger than the winding diameter of the capstan; In a capstan winch, power is transmitted through a slipping clutch between a small sheave provided in line with the groove, an acute deep groove sheave, and an inner shaft, and a first one-way clutch is connected between the inner shaft and the capstan. A second one-way clutch is provided between the casing and the inner shaft, and the function is such that the capstan and the acute-angle deep groove sheave rotate synchronously during winding rotation, and the acute-angle deep groove sheave rotates synchronously with respect to the capstan during capstan payout rotation. A ripping clutch has a function of obtaining a constant friction force and applying back tension, and a one-way clutch and a slipping clutch are installed on the shaft that supports the small sheave installed between the capstan and the acute deep groove sheave. When the capstan winds up and rotates, the small sheave rotates freely due to the free mechanism of the one-way clutch, and when the capstan unwinds and rotates, the locking mechanism of the one-way clutch and the slipping clutch prevent the small sheave from rotating below the set torque. A capstan winch characterized by the following configuration.