JPS6312596A - Winch with guide roller - 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 This invention relates to a rope (wire rope) wound around the winding body of a winch, capstan, load tightening machine, lifting machine, No. J winding machine, etc. (hereinafter simply referred to as a winch). (including, hereinafter the same)
This invention relates to a winch with a guide roller, which is equipped with a rope kite for gripping and guiding the feeding part of the winch.

The shape of the winding barrel of conventional winches is designed to prevent damage to the rope.
Various methods have been devised, but the most common one is one in which a single spiral U-shaped groove is formed on the circumferential surface of a cylindrical winding drum, and the winding start end is connected to the winding drum. If the rope fixed to the winder is wound while being fitted into this U-shaped groove, there will be no contact between the ropes on the winding drum unless the rope is wound in multiple layers, so damage to the rope can be minimized. In general, when the length of the rope to be held in the winding drum becomes large, this can be easily dealt with by increasing the diameter and width of the winding drum. moreover,
In this type of winding drum, the rope on the winding drum is generally wound in a single layer, so there is no increase in the winding of the winding drum as the rope is wound, and therefore the rope can be easily wound and unwound. In addition, since the running speed of the rope can be easily made constant, it is also ideal for applications in which a load must be pulled at a constant speed.

In this type of winch, when the winding drum is rotated to pay out or wind up the rope, the position at which the rope is unwound from the winding drum (the rope wound around the winding drum is The position at which the rope separates from the circumferential surface of the drum (including the retracting position when winding the rope; the same applies hereinafter) is unavoidably moved in the axial direction of the winding drum. In order to achieve orderly and aligned winding with respect to the winding width, the direction of rope withdrawal must always be kept close to perpendicular to the axis of the winding drum, and the so-called fleet angle must be kept as small as possible from the winch. It is necessary to provide a guide pulley at a remote location or a rope guide at the exit from the winding drum; the former is often difficult to implement depending on the usage conditions, and in the latter case, This rope guide also needs to be moved in the axial direction of the winding drum, following the movement of the rope payout position.

Conventional methods adopted to realize the movement of such rope guides include, for example, providing a screw shaft parallel to the winding drum, interlocking this screw shaft with the winding drum, and attaching a rope screwed to the screw shaft. The guide member is configured to move along the screw shaft as the screw shaft rotates as the winding drum rotates.

However, when using this method, an interlocking mechanism for interlocking the winding drum and screw shaft is essential, and in order to make the movement of the rope guide follow the fluctuation of the rope payout position on the winding drum, it is necessary to have a high Due to the need for a high-precision screw shaft and the need for a so-called anti-rotation mechanism to stop the rotation of the rope guide member that is screwed into it as the screw shaft rotates, Since this method requires a large number of mechanical mechanisms and members, the problem that the entire system has to be complicated and expensive cannot be avoided.

Purpose of the Invention Therefore, in view of the problems of the prior art, the object of the present invention is to provide a method for rotating the winding drum by engaging a rope kite member with a spiral U-shaped groove on the winding drum. Since the U-shaped groove acts as a feed screw to move the rope guide member, the screw shaft, the interlocking mechanism for rotating the screw shaft, or the rotation of the rope guide member as the screw shaft rotates. There is no need to provide a prevention mechanism.
An object of the present invention is to provide a new winch with a guide roller.

Structure of the Invention The structure of the first invention according to this application to achieve the above object is to provide a guide roller slidably attached to a shaft parallel to the winding drum, and a flange formed on the kite roller that is attached to the winding drum. Said @
When the drum rotates, the U-shaped groove on the winding drum acts as a feed screw to move the guide roller, so that the guide roller can follow changes in the rope payout position due to the rotation of the winding drum. On the other hand, the second
The structure of the invention is such that the guide roller and the shaft in the first invention are each provided with a second guide with a flange that engages with the rope receiving groove of the first kite roller together with the first guide roller, the first shaft, and the bellows. By installing the roller to be slidably attached to a second shaft parallel to the winding drum, the first guide roller and the second guide roller are engaged with each other through the rope receiving groove and the collar. Since the first
The gist is that while the rope is held between the rope receiving groove of the guide roller and the collar of the second guide roller, it is possible to follow the fluctuation of the rope payout position due to the rotation of the winding drum as a rest. shall be.

Example Examples will be described below with reference to the drawings.

The winch G with a guide roller has the first guide roller 11
and a second guide roller 21 (FIG. 1). The first guide roller 11 is a first guide roller disposed parallel to the winding drum 1.
While being slidably attached to the shaft 12, the second guide roller 21 is similarly slidably attached to a second shaft 22 parallel to the winding drum 1.

The winding drum 1 is a cylindrical drum in which a single spiral groove 1a is carved at a constant pitch p on its circumferential surface,
The shaft 1b is constructed on a common frame 2 together with the first shaft 12 and the second shaft 22 (FIG. 2), and can be rotated manually or electrically via a drive mechanism with a brake (not shown). . The single-shaped groove 1a shall have a width dimension sufficient to accommodate and wrap the rope RP to be used, and the bottom thereof shall be formed in an arc shape that matches the diameter of the rope RP. Figure 3).

The first guide roller 11 has two collars 11a, 11a and a rope receiver! It is a cylindrical roller with 1 lb formed on the circumferential side (Figs. 1 and 3). The thickness of the two tsuba 11a, 11a is approximately the same as the width used at the open end of the 0-shaped groove 18 provided in the volume 1]1ii11.
The mutual interval a is selected to be equal to the pitch p of the single-shaped groove 1a, and when the first guide roller 11 is attached to the first shaft 12, the two flanges 11a, 11a are arranged in a spiral shape. It is in a state where it is engaged with two grooves 1 pitch apart from each other in the single-shaped groove 1a (FIGS. 3 and 4). Further, the rope receiving groove 11b of the first kite roller 11 is an annular groove having a width dimension that allows the rope RP to be engaged with the bottom of the groove, and the flanges 11a, 11a
are spaced apart from each other by the pitch p of the O-shaped groove 18 on the winding drum 1. Therefore, when the first kite roller 11 is on the first shaft 12, the rope receiving groove 11b
and the 0-shaped groove 18 are in a relative positional relationship in which they are opposed to each other.

The second guide roller 21 is a cylindrical roller having one collar 21a on the circumferential side (FIG. 1). It is pivotally attached to the second shaft 22. The engagement depth d between the collar 21a and the rope receiving groove 11b is sufficient to grip the rope RP at the bottom of the rope receiving groove 11b. 5), the peripheral edge of the collar 21a is chamfered on both sides to smooth the engagement with the rope receiving groove '11b.

FIG. 2 shows the mutual positional relationship of the winding drum 1, the first kite roller 11, and the second guide roller 21 on the frame 2. That is, as mentioned above, the O-shaped groove 1 of the winding drum 1
8 and the first kite roller guard 11a, 11a, and
The rope receiving groove 11b of the first guide roller 11 and the collar 21a of the second kite roller 21 are engaged with each other.
and the second shaft 22 to which the second guide roller 21 is attached,
Each of them is arranged parallel to the axis 1b of the winding drum 1. Note that the first guide roller 11 and the second kite roller 21 are as follows:
Each rotates smoothly with respect to the first shaft 12 and the second shaft 22 through bearings (not shown),
In addition, it shall be able to freely slide and move in the axial direction.

On the other hand, the spiral direction of the spiral O-shaped groove 18 provided on the circumferential surface of the winding drum 1 is the direction indicated by the arrow X in FIG. When the winding drum 1 is rotated in the direction of
The guide roller 11 is connected to the rope R by the O-shaped groove 1a.
Direction of the side where P remains unwound (direction of arrow Y in Figure 3)
It is determined that the person will be sent to However, the winding start end of the rope RP is fixed to the winding drum 1 at one end of the 1-shaped groove 18 on the circumferential surface of the winding drum 1, and from there, the winding start end is fixed to the 0-shaped groove 18 on the circumferential surface of the winding drum 1.
a, the winding drum 1 is housed in the 1-shaped groove 18.
The wire is wound around the rope receiving groove 11b of the first guide roller 11, with the position of the O-shaped groove 1a facing the rope receiving groove 11b of the first guide roller 11 as the payout position, and the rope is pulled away from the winding drum 1 and engaged with the rope receiving groove 11b of the first guide roller 11. After that, pull it out and
It is assumed that it is connected to a traction load (not shown) (double-dashed line in Fig. 2). Here, the rope RP is wound in such a way that the winding direction around the winding drum 1 and the winding direction around the first guide roller 11 are mutually different so that the rope RP is in contact with the bottom of the rope receiving groove 11b of the first guide roller 11 over a distance as long as possible. It should be in the opposite direction.

The rope RP engaged with the rope receiving groove 11b of the first guide roller 11 is moved by the collar 21a of the second guide roller 21 that engages with the rope receiving groove 11b.
Because it is pressed against the bottom of b and gripped (Fig. 5),
The winding tension of the rope RP on the winding 11 pH is such that there is no risk of inadvertent loosening while the winding drum 1 is stopped, regardless of the presence or absence of an external load.

Now, let's consider rotating the trunk 1 in the direction of the arrow X in Figure 2 to let out the rope RP. By the rotation of winding drum 1,
The position at which the rope RP is unwound from the winding drum 1 moves in the direction of the shaft 1b and in the direction of the side where the rope RP remains unwound (in the direction of the arrow Y in FIG. 3). 11a, 11a are the 0-shaped groove 1a of volume 1]l1i11
Since the first guide roller 11 is also engaged with the
Following the movement of the payout position of the rope RP, it moves in the same direction on the first shaft 12. Here, from winding drum 1,
Since both the moving speed of the payout position of the rope RP and the moving speed of the first kite roller 11 are constant speeds determined by the helical pitch p of the O-shaped groove 1a, the rope receiving groove 11b of the first guide roller 11 The relative relationship between the rope RP and the O-shaped groove 1a, which is the position at which the rope RP is fed out from the winding drum 1, is always maintained at the initial positional relationship where they face each other.

At this time, following the movement of the first guide roller 11, the second guide roller 21 with the collar 21a that engages with the rope receiving groove 11b also moves on the second shaft 22, so the rope receiving groove There is no risk that the gripping function of the rope RP by the collar 21a at the bottom of the rope RP will be impaired, or that unnecessary bending or stress will be generated in the rope RP between the winding drum 1 and the first guide roller 11. However, winding drum 1
When rotating the rope RP to let out the rope RP, it is assumed that a tension of a certain level or more is applied to the rope RP from the load. Otherwise, since the first guide roller 11 is passively driven, the rope RP may become loose between the winding drum 1 and the first guide roller 11.

When the winding drum 1 is rotated in the direction opposite to the arrow X direction in FIG. Since exactly the same relationship as above is maintained, in the end, the first
The guide roller 11 and the second guide roller 21 are
Regardless of the rotational direction of
It is possible to slide and move on the shaft 12 and the second shaft 22.

Other Embodiments It goes without saying that the number of flanges 11a of the first guide roller 11 is not limited to two, but may be one, or three or more. That is, with respect to the force required to move the first guide roller 11 onto the first shaft 12, the flange 1
When it is not allowed to ensure a sufficient thickness of 1a,
The number can be increased, or conversely, if the mechanical strength of the flange 11a can be ensured sufficiently, the number can be decreased.

The flange 11a of the first guide roller 11 has a substantially trapezoidal cross section by gradually decreasing the thickness at its peripheral edge, and has a substantially trapezoidal cross section.
The cross-sectional shape of the single-shaped groove 1a of ii11 can also be widened at its opening to make it easier to engage with the collar 11a (FIG. 6). Since the thickness of the base of the collar 11a can be increased, it is useful for increasing its mechanical strength, and at the same time, since the opening of the O-shaped groove 18 is widened, it is easy to wrap the rope RP. , easy to work with.

The rope RP is wound around the O-shaped groove 18 of the winding drum 1 and the rope receiving groove 11b of the first guide roller 11 at a radius of RR.
1, RRII, and between the substantial radii R1 and R11 of the winding drum 1 and the first guide roller 11 at the engagement point between the one-shaped groove 1a and the collar 11a of the first guide roller 11, R1/RRI: R11 /RRII can be made to hold true (FIG. 2). When the speed of payout or winding of the rope RP due to rotation of the winding drum 1 is V, the rotational speeds of the winding drum 1 and the first guide roller 11 are respectively nl = v/ (27?: RRI) n11 =V/(277:RRII), while 0
The circumferential speeds of the groove 18 and the flange 11a at the point of engagement are respectively Vl-2πR1n1 V11=27rR11nll, so when the above relationship holds true, v1ζv11, and the flange 11a and the 0-shaped groove 18 are There is little slippage at the point of engagement and therefore
It is possible to effectively eliminate the possibility of premature wear of the collar 11a or the winding drum 1 due to relative slippage.

Another Embodiment In each of the above embodiments, the second guide roller 21 and the second shaft 22 to which it is attached can be omitted. In this case, the first guide roller 11 will be called the guide roller 11, and the first shaft 12 will be called the shaft 12.

The second guide roller 21 provided in each of the above embodiments is the same as the first guide roller 21.
Rope receiving groove '11b of guide roller 11 and collar 21a
The rope RP is gripped by the rope RP, and the winding of the rope RP on the winding drum 1 maintains the tension, so the rope RP is always loaded with a tension higher than a predetermined value.
In applications where tension can be secured when wrapping the rope RP around the winding drum 1 without introducing the above-mentioned gripping action, the second guide roller 21 etc. can be omitted.
Furthermore, functions can be realized with a simpler structure.

As described in detail, according to the first invention of this application,
A guide roller having a collar that engages with a spiral U-shaped groove provided on the winding drum and a rope receiving groove that engages and guides the rope pulled out from the winding drum is mounted on a shaft parallel to the winding drum. When the rope is slidably attached to the shaft and rotated to pay out or wind up the rope along the U-shaped groove, the rope follows the fluctuations in the position of the rope on the drum. , by making the guide roller move on the shaft, the U-shaped groove acts as a feed screw for moving the guide roller, and the rope receiving groove of the guide roller prevents the rope from being paid out from the winding drum. The relative positional relationship is always such that it faces the U-shaped groove corresponding to the position.
Since it is possible to maintain the screw shaft, there is an excellent effect that there is no need to install a special screw shaft, an interlocking mechanism accompanying it, or a rotation prevention mechanism. According to the invention, the kite roller and the shaft are a first guide roller and a first shaft, respectively, and a second flanged second guide roller that engages with a roller receiving groove of the first guide roller is provided.
By disposing the kite roller in a slidable manner on the second shaft parallel to the winding drum, the first guide roller and the second kite roller are engaged with each other through the rope receiver [pipe groove and collar]. Since they are movable together, it is possible to achieve the same effect as the first invention, and since the rope can be held between the first kite roller and the second kite roller, there is no load on the rope. Even when the applied tension is small,
The winding of the rope on the winding drum has the effect of effectively preventing the tension from being loosened inadvertently.

In addition, according to both inventions of this application, by guiding the rope through the rope guide groove, the direction in which the rope is pulled out from the winding drum is always maintained in a direction perpendicular to the axial direction of the winding drum. Therefore, although it has a simple structure, it also has the excellent effect of not requiring any pulleys to keep the fleet angle small.

[Brief explanation of drawings]

Figures 1 to 5 show an embodiment, Figure 1 is a perspective view of the main parts, Figure 2 is an explanatory view of the entire assembly, Figure 3 is an explanatory view of the main parts, and Figure 4 is A of Figure 3. FIG. 5 is an enlarged explanatory diagram of the main part. FIG. 6 is a diagram corresponding to FIG. 4 showing another embodiment. RP... Ropet... Winding drum 1a... Rope kite 11... Guide roller, first guide roller 11a... Tsuba 11b
...Rope receiving groove 12...Shaft, first shaft 21...Second guide roller 21a...Brim 22...
...Axis 2 patent applicant Nippon Yakin Kogyo Co., Ltd. Fuji Manufacturing Co., Ltd.

Claims (1)

[Scope of Claims] 1) In a winch having a spiral U-shaped groove on the circumferential surface of the winding drum, a collar that engages with the U-shaped groove and a rope receiving groove for guiding the rope pulled out from the winding drum are provided. and has
It consists of a guide roller that is slidably attached to a shaft parallel to the winding drum, and when the winding drum is rotated, the guide roller follows the fluctuation of the rope payout position on the winding drum. A winch with a guide roller that moves on the shaft. 2) A winch having a spiral U-shaped groove on the circumferential surface of the winding drum, the winch having a collar that engages with the U-shaped groove and a rope receiving groove that guides the rope pulled out from the winding drum; A first guide roller that is slidably attached to a first shaft parallel to the drum and engages with the rope receiving groove and grips the rope pulled out from the winding drum between the bottom of the rope receiving groove. and a second guide roller that is slidably attached to a second shaft parallel to the winding drum, and when the winding drum is rotated, the rope payout position on the winding drum is controlled. A winch with a guide roller, in which the first guide roller and the second guide roller move on the first axis and on the second axis, respectively, following fluctuations.