JPH0657794U - Improved Danhose anchor - Google Patents

Abstract

(57) [Summary] [Purpose] Dunhose type anchors have recently been remarkably popular because they are small and lightweight anchors that are easy to handle and convenient, but they have structural drawbacks. It is an object of the present invention to provide an improved anchor for preventing the above. [Structure] Remove the reinforcing plates installed above and below the left and right vertical plates of the conventional Dunhose type anchor, install U-shaped fixtures above and below the rear end of the vertical plate, and use the grooves and anchors for anchoring arms above and below the vertical plate. Various improvements will be made, such as mounting a retaining split pin support shaft parallel to the arm shaft, and further mounting a hydraulic cylinder on a U-shaped fixture to press the protruding portion at the rear end of the anchor arm. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to various structures that are easy to handle by improving the drawbacks of the structure of the Dunhose type anchor which has been remarkably popular recently as a lightweight anchor for small ships.

[0002]

[Prior art]

 As shown in Figs. 6 to 8, the conventional Dunhose type anchor has tapered vane plates fixed to the left and right with triangular vertical plates, and an anchor arm is provided between them, and the anchor arm penetrates right and left vertical plates right next to each other. A ring supports the rear end of the anchor arm by means of a shaft and holds the anchor rope at the tip of the anchor arm. The reinforcing plates are fixed above and below the rear ends of the left and right vertical plates. However, since the reinforcing plate closes the vertical gap at the rear part of the vertical plate, the rearward rotation of the anchor arm is prevented at the position of about 60 degrees. Therefore, when using the anchor, it is good to assist the forward movement of the anchor, but if the tip of the anchor hits a reef in the water, even if the anchor arm tries to rotate backward, it cannot rotate backward beyond the above position. Because of this, the anchor rope was broken, the anchor could not be pulled out, and there was a situation where the anchor had to be abandoned without stopping. Therefore, there is a demand for the emergence of a Dunhose type anchor that improves on these drawbacks.

[0003]

[Problems to be solved by the device]

 Therefore, the object of the present invention is to make various improvements in order to eliminate the above-mentioned drawbacks of the conventional Dunhose anchor, and to provide an improved Dunhose anchor that is easy to pull out and easy to use.

[0004]

[Means for Solving the Problems]

 In order to achieve the above object, as the first aspect of the present invention, the reinforcing plates attached to the upper and lower sides of the left and right vertical plates are removed, and U-shaped fixtures are attached and supported on the upper and lower ends of the vertical plates to support them. A structure in which winding cord grooves are formed in the upper and lower parts of the center of the left and right vertical plates, and when the anchor is used, the anchor arm is pulled up to the position of the groove and the cord is wound in the upper and lower grooves, thereby stopping the anchor arm at this position. As the second term, an arc hole is formed in the lower part of the anchor arm concentric with the arm shaft, and a split pin support shaft is attached to the left and right vertical plates in parallel with the anchor arm shaft through the arc hole and one end of this shaft is attached. A structure that penetrates the split pin between the and the anchor arm shaft to stop the split pin, and the split pin is cut by the arc hole of the anchor arm when the anchor arm makes a large reversal rotation while using the anchor. Next, as the third item, a hydraulic cylinder is installed on the U-shaped fixture attached to the rear end between the left and right vertical plates, and the convex and concave portions are alternately arranged on the rear end of the anchor arm. When the convex portion comes into pressure contact with the piston push rod of the hydraulic cylinder when the anchor arm rotates in reverse, the hydraulic cylinder operates and pushes the anchor arm forward.

[0005]

[Action]

 In the improved Danhose anchor configured as described above, the reinforcing plates attached to the upper and lower sides of the left and right vertical plates were removed, so the anchor arm was also rotatable rearward, but at least 90 degrees backward When it falls down, it pulls the anchor and the anchor becomes less effective with respect to the bottom of the water. For this reason, the cord is wound in the winding cord grooves formed above and below the center of the vertical plate, and the split pin support shaft and split pin prevent the anchor arm from rotating backward more than 60 degrees with respect to the horizontal. Holds and holds the attitude of Dunhose type anchor. However, if the ship is swept away by the influence of tidal currents or wind waves or the anchor moves and is caught between reefs, pull the anchor rope and pull the anchor arm strongly upward.In these cases, the anchor arm pushes off the cord. Alternatively, the cotter pin is cut to rotate the anchor arm backwards, and the anchors are pulled out backwards from the reef where the anchors are sandwiched to accommodate the anchors. In an improved anchor equipped with a hydraulic cylinder, in such an emergency, when the anchor rope is pulled up and the anchor arm is rotated, the recess at the lower end pushes the piston push rod and the hydraulic cylinder operates to operate the anchor arm. Since the rotation is promoted to rotate it backward, the anchor can be pulled out backward and escaped in the same manner as described above.

[0006]

【Example】

 An embodiment will be described with reference to the drawings. A conventional Dunhose type anchor is shown in FIG. 6, in which the left and right vane plates (1), the left and right vertical plates (2), and the anchors that penetrate the vertical plates to the left and right. The arm shaft (3), the anchor arm (5) are the anchor rope rings (4) of the anchor arm, and the reinforcing plates (R) are attached to the upper and lower rear parts of the left and right vertical plates. Next, in the improved type, first, the reinforcing plates (R) attached to the upper and lower sides of the vertical plate are removed, and the U-shaped fixtures (7) are attached and supported on the upper and lower ends of the vertical plate (2) to support the vertical plate to the left and right. A winding cord groove (8) is formed in the upper and lower portions of the central portion of (2), and when the anchor is used, the cord is wound over the upper and lower winding cord grooves and the anchor arm is held at this position. Further, as a second improvement, an arc hole (6) concentric with the anchor arm shaft (3) is formed in the lower part of the anchor arm (5), and the left and right vertical plates (2) are parallel to the anchor arm shaft (3). The structure is such that a split pin support shaft (10) penetrating the circular arc hole (6) is attached, and a split pin (9) extending through one end of this shaft and the anchor arm shaft (3) is penetrated and stopped. Further, as a third improved form, a hydraulic cylinder (C) is installed in the front-rear direction between the upper and lower plates of the U-shaped fixture (7), and the convex portion (11) is provided at the rear end of the anchor arm (5). , The recesses (12) are alternately formed, and when the protrusion (11) is brought into pressure contact with the piston push rod (P) of the hydraulic cylinder (C) by the reverse rotation of the anchor arm (5), the hydraulic cylinder (C) operates. It is a structure that pushes the anchor arm (5) forward.

[0007]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. The conventional Dunhose-type anchor is popular because it is lightweight and easy to handle and also works as an anchor, but the main drawback is that the anchor arm interferes with the upper and lower reinforcing plates when it is sandwiched between reefs. Since it was not rotated backwards, even if the anchor rope was pulled upward, no force was applied and the rope broke and the anchor had to be abandoned. Therefore, in the present invention, firstly, the reinforcing plate is removed, and in order to prevent the effectiveness of the anchor from being lowered, a winding string groove for anchoring is formed on the vertical plate and the string is wound and the anchor arm is placed at this position. It was modified to hold the anchor arm at the 60 degree position with the split pin support shaft. Therefore, even if the anchor is caught on a reef, the anchor can be pulled out by pulling the anchor rope and cutting the winding cord or cutting the split pin to prevent loss of the anchor. It should be noted that it is possible to install a hydraulic cylinder to achieve the same effect, and it can be expected that the Dunhose type anchor will become more and more widely spread according to the present invention.

[Brief description of drawings]

FIG. 1 is a front view of an improved Danhose anchor.

FIG. 2 is a plan view of FIG.

FIG. 3 is a left side view of FIG.

FIG. 4 is a front view showing a partial cross section of an improved Danhose anchor with a hydraulic cylinder.

FIG. 5 is a plan view of FIG.

FIG. 6 is a front view of a conventional Dunhose type anchor.

FIG. 7 is a plan view of FIG.

FIG. 8 is a left side view of FIG.

[Explanation of symbols]

 1 Feather plate 2 Vertical plate 3 Anchor arm shaft 4 Anchor rope ring 5 Anchor arm 6 Anchor arm arc hole 7 U-shaped fixing tool 8 Winding cord groove 9 Split pin 10 Split pin support shaft 11 Anchor arm convex portion 12 Anchor arm concave portion C Hydraulic cylinder P Piston push rod R Reinforcing plate

Claims (3)

[Scope of utility model registration request] 1. In a conventional Dunhose type anchor, the reinforcing plates attached to the upper and lower sides of the left and right vertical plates are removed, and U-shaped fasteners are attached and supported on the upper and lower ends of the vertical plate to support the center of the left and right vertical plates. A structure in which winding cord grooves are formed in the upper and lower parts of the member, and when the anchor is used, a cord is wound around the groove, the anchor arm is pulled up to this position, and the anchor arm is prevented from rotating backward. 2. The improved Danhose type anchor according to claim 1, wherein an arc hole concentric with the anchor arm shaft is formed in a lower part of the anchor arm, and the right and left vertical plates penetrate the arc hole in parallel with the anchor arm shaft. Attach the split pin support shaft, stop the split pin by penetrating one end of this shaft and the split pin extending over the anchor arm shaft, and when the anchor arm is largely inverted backwards, the split pin is rotated by rotating the arc hole under the arm. A structure that allows the anchor arm to rotate backward after cutting. 3. The improved Dunhose type anchor according to claim 1, wherein a hydraulic cylinder is mounted in the front-rear direction on a U-shaped fixture attached to the rear end between the left and right vertical plates, and the rear end of the anchor arm. The convex structure and the concave structure are alternately formed in the structure, and when the convex structure comes into pressure contact with the piston push rod of the hydraulic cylinder due to the reverse rotation of the anchor arm, the hydraulic cylinder operates to rotate the anchor arm backward or forward.