JPH0737318B2 - Capstan winch - Google Patents

Description

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

(2) Conventional Technology and Its Deficiencies Conventionally, the butt wire extended from the capstan winch is handled manually, but this is a very dangerous work, especially when the winch is reversed.
If a handling operator makes a mistake in the work order, he or she may be instantly involved and lose his life. Therefore, as a method of not using the tail picking device, there is a method of winding the tail wire on a drum by a reel method.

In addition, a recent hand gripping device has been independently installed behind the capstan, and a device has been developed for winding and unwinding the tail wire in conjunction with the capstan while always providing the back tension required to maintain the tension. Its structure is
There are methods such as the method of generating the tension on the buttocks by pinching with the upper and lower links, and the method of utilizing the frictional force of the groove wheel. The latter adjusts the rotation of the friction wheel by operating a relief valve via a fluid drive circuit in order to apply a frictional force.

However, the method or mechanism for constantly applying back tension to the capstan is complicated and often cannot be easily repaired in case of failure. Especially, in the latter case, when the fluid drive circuit fails, it is remarkably difficult to rely on an expert immediately. There is a drawback that the operating rate decreases.

Also, when winding a wire with a capstan winch and there is no load that should be at the load side end of the wire and there is slack in the whole, if you wind it as it is, the winding position of the wire wound on the capstan will be from the center. The phenomenon of moving left and right occurs. The cause is that the capstan has an outer circumference with a concave center like a spool, and one of the wires is wound with tension applied and the other has no tension. This is because the side (the rear side) approaches the smallest diameter position of the capstan. As a result, the wires, etc. will shift from the predetermined position of the capstan,
If it is left as it is, it may cause winding disorder, and after that, the wire or the like may not be normally wound in, or the wire or the like may come off the capstan.

(3) Problem to be Solved by the Invention In view of the above problems, the present invention mechanically configures a means for constantly applying back tension when the capstan is rolled up when the load side is unloaded, and a wire or the like to the capstan. Prevents winding disorder and facilitates repairs in case of equipment failure, and the rear handle mechanism is coaxial with the capstan to reduce overall storage and accumulation, and prevent wires, etc. from coming off the capstan during operation. The main purpose is to propose a capstan winch that has

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

1, 2, and 3 are a plan view, a side view, and a vertical sectional view showing an example of the present invention. Reference numeral 1 denotes a capstan, which is fitted to the outer shaft 8. A worm wheel 14 ′ is fitted to the outer shaft 8, and the worm wheel 14 ′ is meshed with a worm gear 14 connected to an external drive shaft 15 via a reduction gear 19 in a gear box 13. An external drive shaft 15 is connected to the worm gear 14. The outer shaft 8 is hollow, and the inner shaft 9 is rotatably fitted therein.

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

The first one-way clutch 31 is installed so as to rotate when the capstan 1 rotates in the winding direction (during normal rotation), and to rotate freely during reverse rotation. Therefore, at the time of normal rotation, the acute-angle deep groove sheave 3 rotates in synchronization with one direction (winding direction) of the driving direction of the capstan 1, but idles in the opposite direction (feeding direction).

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

Therefore, at the time of forward rotation, the acute deep groove sheave 3 rotates in synchronization with the capstan 1 in one direction (winding direction), but is locked in the opposite direction (feeding direction) by the second one-way clutch 32. Moreover, when a certain frictional force is exceeded by the slipping clutch 34, the acute-angle deep groove sheave 3 rotates with respect to the inner shaft 9. still,
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 always in contact with the groove of the acute-angle deep groove sheave 3 by the biasing spring 11 and the pedal arm 10. base
The upper surface of 16 is provided with a bent tubular wire guard 12 for post-treatment of the wire. A large groove is formed on the upper portion of the wire guard 2 depending on the diameter of the wire rope so that the wire rope can be freely removed. Reference numeral 7 indicates a pedal.

The sheave arm 18 is located at the base 16 in front of the acute deep groove sheave 3.
The small sheave 2 of the double type 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 circumference thereof coincide with each other, and a rope or a wire is wound around these grooves.

The small sheave 2 is, as shown in FIG. 4, FIG. 5 and FIG.
One-way clutch 42 and slipping clutch on shaft 41
It is attached through 43. A V-groove pulley 44 is fixed to the shaft 41 at an intermediate position where it is wound by the capstan 1 from the working side of the wire or the like to be wound. The V-groove pulley 44 is synchronously rotated by the rotation of the sheave 2. The one-way clutch 42 is mounted so that it rotates freely when the wire or the like is wound by the capstan 1 during normal rotation, and the shaft 41 and the sheave 2 are locked during reverse rotation. The slipping clutch 43 is adjusted to have a constant frictional force.

Therefore, when the wire or the like is rotated in the reverse direction, a frictional force due to the sheave 2 is further generated, and the frictional force due to the acute-angle deep groove sheave 3 is supplemented in the case of insufficient deficiency.

A sheave 47 supported by brackets 45 and 46 rotatably attached to the sheave arm 18 faces the guide V-groove sheave 44. The wire or the like is regulated between the guide V-groove sheave 44 and the sheave 46 and sent to the capstan 1. The sheave 47 is a recess 45a, 4 in the bracket 45, 46.
Since it is supported by the 6a in a fitted state, it is easy to pinch a wire or the like. It should be noted that after the wire or the like has been caught, it is tightened from both sides to the brackets 45 and 46 by the lock nuts 48 so that they cannot be easily removed.

Reference numeral 51 denotes a roller, and the roller 51 is supported by a shaft 52 attached to brackets 45 and 46. And roller 51 and sheave
Wires and the like are also sandwiched between them, but since the sheave 47 can actually be removed, the sandwiching is easy. A tension spring 53 is provided between the shaft 52 and the sheave arm 18.
Is provided, and the sheave 47 is a guide V-groove sheave so that the wire or the like is not caught in the capstan 1 while being loosened.
It is constructed so that it can rotate around 44.

Therefore, since the wire or the like is strained when a load is applied to the working end side of the wire or the like, when the capstan 1 is rolled in, the sheave as shown in FIG. 4 and FIG.
Although 47 is almost at the upper position, when winding with the capstan 1 in a state where no load is applied to the working end side of the wire, the sheave 47 is guided by the spring 53 as shown by the chain double-dashed line in FIG. Since the V-groove sheave 44 turns around the outer circumference, the wire or the like sandwiched between the sheave 47 and the roller 51 eliminates the slack generated between the sheave 47 and the capstan 1 and obtains an appropriate tension state. .

Reference numeral 61 denotes a pressing roller, and the pressing roller 61 is rotatably attached to a lever 62 having a shaft 52 as a rotation center.
The roller 61 is formed in a shape that substantially coincides with the groove of the guide V-groove sheave 44, and the tension spring 64 provided between the bracket 46 and the shaft 63 of the roller 61 always causes the V-pulley guide V-groove sheave 44 to move. Pressed into the groove. 65 indicates a grip.

Therefore, since the friction of the wire or the like restricted by the guide V-groove sheave 44 is increased by the pressure of the roller 61, when the wire or the like is caught in the capstan 1, the roller 61 is used when it is loose. By doing so, it is possible to prevent the wires or the like from being caught in the capstan 1 from being overlapped and caught in the capstan 1.

Next, the operation of the present invention will be described. First, remove the sheave 47, sandwich the wire, introduce the wire from the upper part of the capstan 1, wind the wire roller several times and pull out from the lower part, and hang it upward from the lower part of the dual type sheave 2 provided in the front. Sharp deep groove sheave 3 on the side of the stun 1
And the tail wire is led out to the wire guard 12 below. Double-type sheave 2 is capstan 1
Is located in the middle of the acute-angled deep groove sheave 3, and is particularly of a double type so that the wire rope can be easily wound around the acute-angled deep groove sheave 3 from the capstan 1. The wire pressing roller 6 urged by the spring 11 engages with the groove of the acute-angle deep groove sheave 3 and constantly presses the wire rope into the groove of the deep groove sheave 3.

In this case, when there is no load on the working side of the wire or the like when the capstan is wound, when the capstan 1 is driven to rotate to the winding side (solid line A in FIG. 2), the loosened wire or the like pulls the spring 53. As a result, the sheave 47, the roller 51, and the roller 61 forcibly make a half-circulation downward along the groove of the guide V-groove sheave 44. Therefore, when the wire or the like wound by the capstan 1 and the acute-angle deep groove sheave 3 is smaller than the friction force set by the action of the slipping clutch 43, it is a guide V-groove sheave.
Since the 44 does not rotate, the frictional force due to the sliding with the guide V-groove sheave 44 rapidly increases, and eventually a large tension is generated between the capstan 1 and the guide V-groove sheave 44, and the capstan 1 It is possible to prevent the disorder of winding at the time of winding into 1.

On the other hand, the capstan 1 and the acute-angle deep groove sheave 3 rotate simultaneously at the same speed by the action of the one-way clutch 4. In this case, since the peripheral speed of the acute-angled deep groove sheave 3 is higher than the peripheral speed of the capstan 1, slip occurs on the acute-angled deep groove sheave 3 side.
Therefore, back tension can be constantly generated in the wire rope.

In addition, during normal rotation (winding) in a load state in which a load is applied to the wire or the like, a tension larger than that of the tension spring 53 is applied, so that there is always tension between the guide V-groove sheave 44 and the capstan 1. In this state, the wire and the like will not be disturbed and caught in the capstan 1. still,
The tension of the tension spring 53 is much smaller than the tension of the loaded wire or the like.

Next, when the capstan 1 rotates toward the payout side during the unwinding operation (in reverse rotation), the first one-way clutch 31 built into the capstan 1 becomes free and the second one-way clutch 32 is locked. Is
The acute deep groove sheave 3 is connected to the inner shaft 9 and the slipping clutch 34. Therefore, the wire or the like wound around the capstan 1 is always fed while generating back tension because friction acts on the acute-angle deep groove sheave 3 by the operation of the slipping clutch 34.

Then, since the sheave 2 which rotates with the feeding of the wire or the like rotates in the clockwise direction in FIG. 2, the shaft 41 also rotates synchronously by the action of the one-way clutch 42 in the locked state.
The guide V-groove sheave 44 also rotates in the same direction. In this case, since the position of the sheave 47 is located on the lower side and the peripheral speed accompanying the rotation of the guiding V-groove sheave 44 is higher than the moving speed of the wire or the like, the guiding V-groove sheave is caused.
The wire or the like between 44 and the capstan 1 will always maintain a tension state, and the wire or the like can prevent winding disorder in the capstan 1.

In the loaded state at the wire end at the time of reversing, there is tension in the entire wire, and winding disorder does not occur.

When the pedal 7 of the pedal arm 10 is depressed, the pressing roller 6 releases the pressing frictional action of the wire rope wound along the acute-angle deep groove sheave 3, so that the desired position of the acute-angle deep groove sheave 3 is laterally moved. It can be easily wrapped around other wire ropes and removed.

FIG. 7 is a side view showing another example of the present invention. In addition to the capstan winch, the channel-shaped base 22 includes a drive source 17 such as an engine, a centrifugal clutch 23, and a transmission.
20 are installed on the base 22. Reference numeral 21 denotes an external driving 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 that operates via the one-way clutches 31, 32 is rotationally driven via the slipping clutch 34.

The tail of the wire rope pulled out by the acute-angle deep groove sheave 3 and the wire pressing roller 6 is guided to the outside of the machine through the wire guard 12 and is arranged.

(5) Configuration and Effect of the Invention As described above, according to the present invention, when a wire or the like is wound by a capstan winch, there is no load at the end of the wire or the like, and the wire or the like is wound as it is when it is slack. When the wire is wound up, the winding position of the wire wound around the capstan moves from the center, the friction with the wire can be increased, and the tension can be constantly applied to the wire. This has the effect of eliminating winding disorder that overlaps the wound portion of the capstan and the accident of coming off the capstan.

Further, according to the present invention, there are the following features that the tail wire operation device using the hydraulic mechanism does not have. The weight of the main body is one-third of that of a hydraulic system, and if maintenance of oil is neglected from the viewpoint of maintenance, it will cause a failure and maintenance cost will be high and it will not be possible to immediately arrange hydraulic parts etc. If it is a formula, since the structure is simple, there are few failures and anyone can easily repair it even if trouble occurs.

In addition, unlike the conventional method of manually maintaining the back tension or the tail handling method using a separate mechanical device that is interlocked with the capstan, it is coaxially integrated with the capstan and the tail handling operation can be performed mechanically. Therefore, there is little manual tension, and safe work can be performed extremely easily.

The wire and the like include both metal such as wire rope and synthetic natural fiber such as Manila rope.

[Brief description of drawings]

1 is a plan view showing an embodiment of the present invention, FIG. 2 is a side view showing an embodiment of the present invention, and FIG. 3 is a central transverse sectional view in FIG. 2 showing an embodiment of the present invention. FIG. 4 is a front view showing an example of the structure of the sheave, FIG. 5 is a sectional view taken along the line ABCDE in FIG. 4, FIG. 6 is a rear view showing an example of the sheave, and FIG. It is a side view which shows other Examples. DESCRIPTION OF SYMBOLS 1 ... Capstan, 2 ... Double sheave, 3 ... Acute deep groove sheave, 8 ... Outer shaft, 9 ... Inner shaft, 31 ... First one-way clutch, 32 ... Second one-way clutch, 33 ... Casing, 34 ... Slipping clutch, 42 ... One-way clutch with small sheave, 43 ... Slipping clutch with small sheave,
44 ... Guiding sheaves, 45, 46 ... Brackets, 45a, 46b ... Bracket recesses, 47 ... Rollers, 51 ... Second rollers, 53 ... Extension springs.

Claims (3)

[Claims] 1. An acute-angle deep groove sheave, which is attached to both ends of an outer shaft for transmitting power to a capstan and an inner shaft fitted to the outer shaft via one-way clutches and has a groove diameter larger than the winding diameter of the capstan. In a capstan winch in which power is transmitted via a slipping clutch between a small sheave provided to match the groove of the acute deep groove sheave and the acute deep groove sheave and the inner shaft, the load side of the wire etc. wound on the capstan A guide sheave is provided on the shaft, and the guide sheave and the small sheave are coaxial with each other through a shaft, and a one-way clutch and a slipping clutch are provided between the small sheave and the shaft, which locks during free rewinding when winding the wire. , The shaft and the guide sheave are fixed, and a roller that rotates around the shaft and guides a wire or the like along the groove of the guide sheave during rotation is provided. Is a capstan winch characterized by a spring locked to remove loose wires. 2. The cap according to claim 1, wherein the roller is provided with a second roller for guiding by sandwiching a wire or the like, and the spring end is locked to a support shaft of the second roller. Stan winch. 3. The roller engages with and supports a concave portion provided in a roller receiving bracket that rotates around the axis of the shaft to facilitate removal of the wire and the like, and lock the spring end on the bracket side. The capstan winch according to claim 1.