JP7701009B2 - Capstan cover - Google Patents

Description

The present invention relates to a capstan cover that encloses the outer surface of a horizontally installed rotating capstan.

A capstan winch is known as a cylindrical device for winding or feeding a wire rope attached to a winch or the like. For example, Patent Document 1 discloses a capstan winch tail gripping device that includes "a holding roller axially mounted on a machine base, a capstan drum (capstan) around which the rope is wound, and a pinch roller for pressing the tail side of the rope wound around the capstan drum against the holding roller."

Practical Registration No. 3003827

Generally, the outer periphery of a capstan is exposed. For this reason, when performing operations such as winding or unwinding the wire rope, there is a risk that the worker's hands or clothing (hereinafter referred to as "clothing, etc.") may become entangled in the gap between the capstan and the wire rope. There was a need to develop a structure to prevent such entanglement accidents.

In view of these problems, the present invention aims to provide a capstan cover that can prevent the worker's clothing from getting caught in the gap between the capstan and the wire rope when performing operating operations, thereby improving work safety.

To solve the above problems, a typical configuration of the capstan cover according to the present invention is a capstan cover that surrounds the outer periphery of a horizontally installed rotary capstan, and is characterized by having a disk that fits along the end face of the capstan, a support shaft that supports the disk, and multiple shafts that are arranged near the outer edge of the disk and extend along the outer periphery of the capstan.

According to the above configuration, the multiple shafts extending along the outer circumferential surface of the capstan function as a fence. This prevents the worker's clothing from getting caught in the gap between the capstan and the wire rope, improving work safety. In addition, the multiple shafts are supported on the support shaft via a disk, allowing the multiple shafts to be positioned in a stable state relative to the capstan. In addition, the multiple shafts function as a fence, making it possible to visually check the winding status and operating status of the wire rope through the gaps in the shafts.

The multiple shafts may be selectively inserted and removed. With this configuration, the wire cable can be passed through the area where the shafts are selectively removed. This allows the wire cable to be smoothly wound up and unwound.

The shaft may have multiple grooves formed therein, and the disk may be provided with a ball plunger that engages with the grooves. With this configuration, the length of the shaft relative to the outer circumferential surface of the capstan can be adjusted by changing the engagement position between the shaft grooves and the ball plunger. This makes it possible to apply the capstan cover of the present invention to capstans of various sizes.

The capstan cover is of a stand type and is preferably equipped with a stand that supports the support shaft. This allows the position of the capstan cover to be stabilized when it is installed.

The capstan cover is magnetic and preferably has a magnetic base to which a support shaft is attached, and a magnet that is fixed to the magnetic base and is attracted to the end face of the capstan. This also makes it possible to stabilize the position of the capstan cover when it is installed.

It is advisable to attach a rotation-stopping weight to the bottom of the disk. This will suppress the rotation of the disk, preventing it from rotating due to the rotation of the capstan, and allowing for easy handling of the wire cable.

It is preferable to provide a roller above the disk that contacts the flange or end face of the capstan. This can prevent the disk, and therefore the shaft supported by it, from tilting relative to the capstan. This makes it possible to effectively prevent contact between the shaft and the outer circumferential surface of the capstan.

The present invention provides a capstan cover that can prevent the worker's clothing from getting caught in the gap between the capstan and the wire rope when performing operating tasks, thereby improving work safety.

3A and 3B are diagrams illustrating a crawler winch and a capstan cover of the first embodiment. FIG. 2 is an overall perspective view of the capstan cover according to the first embodiment. FIG. 2 is an overall perspective view of the capstan cover according to the first embodiment. 11A and 11B are diagrams illustrating a crawler winch and a capstan cover of a second embodiment. FIG. 11 is an overall perspective view of a capstan cover according to a second embodiment.

The preferred embodiment of the present invention will be described in detail below with reference to the attached drawings. The dimensions, materials, and other specific values shown in the embodiment are merely examples to facilitate understanding of the invention, and do not limit the present invention unless otherwise specified. In this specification and drawings, elements having substantially the same functions and configurations are given the same reference numerals to avoid duplicated explanations, and elements not directly related to the present invention are not illustrated.

First Embodiment
Fig. 1 is a diagram for explaining a crawler winch 10 and a capstan cover 100 of the first embodiment. Fig. 1(a) is a perspective view illustrating a state before the capstan cover 100 of the first embodiment is attached to the crawler winch 10. Fig. 1(b) is a perspective view illustrating a state after the capstan cover 100 of the first embodiment is attached to the crawler winch 10.

As shown in Figures 1(a) and (b), the crawler winch 10 has a crawler 12 that travels on the ground, and above the crawler 12 and forward in the direction of travel of the crawler winch 10, a rotary capstan 14 that winds up and sends out a wire rope (not shown) is disposed. The capstan 14 is disposed so that the rotary shaft 10a shown in Figure 1(a) faces sideways. The capstan cover 100 of the first embodiment is attached to the capstan 14 so as to surround the cylindrical outer circumferential surface 14a of the capstan 14, as shown in Figure 1(b).

Figures 2 and 3 are overall perspective views of the capstan cover 100 according to the first embodiment. Figure 2 illustrates the capstan cover 100 as viewed from the side opposite the capstan 14 (outside), and Figure 3 illustrates the capstan cover 100 as viewed from the capstan 14 side (inside).

As shown in Figures 2 and 3, the capstan cover 100 of the first embodiment is composed of a disk 110, a support shaft 120, and multiple shafts 130. The disk 110 is arranged along the end face 14b of the capstan 14 (see Figure 1 (b)), and is supported by the support shaft 120 near the center. The multiple shafts 130 are arranged in the circumferential direction near the outer edge 110a of the disk 110, and are arranged to extend along the outer peripheral surface 14a of the capstan 14. In this way, the multiple shafts 130 are supported by the support shaft 120 via the disk 110.

According to the above configuration, the multiple shafts 130 function as a fence for the outer peripheral surface 14a of the capstan 14. As a result, the outer peripheral surface 14a of the capstan 14 is blocked by the multiple shafts 130, which prevents the worker's clothing from getting caught in the gap between the capstan 14 and the wire rope (not shown), thereby improving work safety.

In particular, the capstan cover 100 of the first embodiment is a stand type. More specifically, the capstan cover 100 of the first embodiment is equipped with a stand 140 that supports the support shaft 120. The stand 140 is configured to include a pole 142 to which the support shaft 120 is connected, and a base 144 to which the lower end of the pole 142 is connected. With this configuration, the capstan cover 100 is installed on the ground via the stand 140. This makes it possible to install the capstan cover 100 in a stable position relative to the capstan 14.

In addition, in the capstan cover 100 of this embodiment, as shown in FIG. 3, the multiple shafts 130 can be selectively inserted and removed (FIG. 3 shows an example in which one shaft 130 is removed). This allows the wire cable to be smoothly wound and unwound by passing it through the area where the shaft 130 is removed. Depending on the diameter of the wire cable, the wire cable may be inserted through the gaps between the multiple shafts 130 without removing the shafts 130.

Furthermore, in the capstan cover 100 of this embodiment, as shown in Figures 2 and 3, a plurality of grooves 132 are formed in the shaft 130. Meanwhile, the disk 110 is provided with a ball plunger 112 (see Figure 2) that engages with the grooves 132. This allows the length of the shaft 130 relative to the outer circumferential surface 14a of the capstan 14 to be adjusted by changing the engagement position between the grooves 132 of the shaft 130 and the ball plunger 112. Therefore, it becomes possible to apply the capstan cover 100 to capstans 14 of various sizes.

In addition, in the capstan cover 100 of this embodiment, a rotation-stopping weight 150 (see FIG. 2) is attached below the disk 110. This makes it possible to suppress the rotation of the disk 110. Therefore, the rotation of the disk 110 caused by the rotation of the capstan 14 is prevented, and the wire cable can be easily handled.

Furthermore, in the capstan cover 100 of this embodiment, a roller 160 (see FIG. 3) is attached above the disk 110, which contacts the flange 14c or end face 14b (see FIGS. 1(a) and (b)) of the capstan 14. This makes it possible to prevent the disk 110, and in turn the shaft 130 supported by it, from tilting relative to the capstan 14. This makes it possible to effectively prevent contact between the shaft 130 and the wire cable.

Second Embodiment
4A and 4B are diagrams for explaining the crawler winch 10 and the capstan cover 200 of the second embodiment. Fig. 4A is a perspective view illustrating a state before the capstan cover 200 of the second embodiment is attached to the crawler winch 10. Fig. 4B is a perspective view illustrating a state after the capstan cover 200 of the second embodiment is attached to the crawler winch 10.

Figure 5 is an overall perspective view of the capstan cover 200 according to the second embodiment. Figure 5(a) illustrates the capstan cover 200 as viewed from the side opposite the capstan 14 (outside), and Figure 5(b) illustrates the capstan cover 200 as viewed from the capstan 14 side (inside). Note that components common to the capstan cover 100 of the first embodiment described above are given the same reference numerals and will not be described.

The capstan cover 100 of the first embodiment was a stand type. In contrast, the capstan cover 200 of the second embodiment shown in Figures 4 and 5 is a magnet type. In detail, the capstan cover 200 of the second embodiment includes a magnet base 242 and a magnet 244. The support shaft 120 is attached to the magnet base 242, and the magnet 244 is fixed to the magnet base 242 and attracted to the end surface 14b of the capstan 14.

In the capstan cover 200 of the second embodiment, for example, as shown in FIG. 4(a), a magnet 244 is attracted to the end face 14b of the capstan 14, thereby holding the support shaft 120 to the capstan 14 via a magnet base 242. Then, as shown in FIG. 4(b), the support shaft 120 is fixed to the disk 110, and the disk 110 and the multiple shafts 130 arranged on it are attached to the capstan 14.

When the capstan 14 rotates, the magnet base 242 and support shaft 120 also rotate. A bearing is provided between the support shaft 120 and the disk 110, allowing the support shaft 120 to rotate freely relative to the disk 110. A rotation-stopping weight 150 is provided below the disk 110, so even if the support shaft 120 rotates, the disk 110 and shaft 130 do not rotate, and the function as a fence can be maintained.

The capstan cover 200 of the second embodiment also provides the same effect as the capstan cover 100 of the first embodiment, since the outer peripheral surface 14a of the capstan 14 is blocked by the shaft 130. In particular, the capstan cover 200 of the second embodiment makes it possible to install the capstan cover 200 in a stable position relative to the capstan 14 even when the ground is in poor condition, such as when the ground is uneven.

Although the preferred embodiment of the present invention has been described above with reference to the attached drawings, it goes without saying that the present invention is not limited to the examples described. It is clear that a person skilled in the art can come up with various modified or revised examples within the scope of the claims, and it is understood that these also naturally fall within the technical scope of the present invention.

The present invention can be used as a capstan cover that surrounds the outer periphery of a rotating capstan that is installed horizontally.

10...crawler winch, 10a...rotating shaft, 12...crawler, 14...capstan, 14a...outer surface, 14b...end surface, 14c...flange, 100...capstan cover, 110...disk, 110a...outer edge, 112...ball plunger, 120...support shaft, 130...shaft, 132...groove, 140...stand, 142...pole, 144...base, 150...weight, 160...roller, 200...capstan cover, 242...magnet base, 244...magnet

Claims (6)

A capstan cover that surrounds the outer periphery of a horizontally installed rotary capstan,
A disk along the end surface of the capstan;
A support shaft that supports the disk;
a plurality of shafts arranged near the outer edge of the disk and extending along the outer circumferential surface of the capstan;
Equipped with
A capstan cover characterized in that the multiple shafts are selectively insertable and removable . The shaft has a plurality of grooves formed therein,
2. A capstan cover as claimed in claim 1 , wherein said disk is provided with a ball plunger which engages said groove. The capstan cover is a stand type,
3. The capstan cover according to claim 1, further comprising a stand for supporting the support shaft. The capstan cover is magnetic.
a magnet base to which the support shaft is attached;
a magnet fixed to the magnet base and attracted to an end surface of the capstan;
The capstan cover according to claim 1 or 2, further comprising: 5. The capstan cover according to claim 1 , further comprising a weight for preventing rotation attached to the lower part of the disk. 6. A capstan cover according to claim 1 , further comprising a roller disposed above the disk for contacting a flange or an end face of the capstan.

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