JP5383396B2 - 錨 - Google Patents

Description

  The present invention relates to a dredger mainly used for small vessels such as pleasure boats.

  In a dredger used for a small vessel, the claw of the dredger is caught by a reef or the like and cannot be removed, and the claws may be damaged by forcibly pulling up the dredger. Also, if the rope connecting the anchors is cut and the ropes and anchors are left in the sea, the rope will wrap around the ship's screw and cause a maritime accident.

  In order to prevent this, Patent Document 1 discloses that a base end portion of a claw is pivotally supported at a lower portion of a columnar main body connected to a rope or the like, and a shear pin is passed through a lower portion of the main body and a base end portion of the claw. In normal use, the nail is held by the shear pin so that it does not rotate. When the nail is caught on the reef and a force exceeding a certain level is applied to the nail, the shear pin is sheared and the nail rotates. It has been described so that it can be removed from the reef without damaging it and the dredging can be recovered.

  In the thing of the said patent document 1, since it would be troubled if a shear pin falls off during use, the volt | bolt and the nut were used as a shear pin. When using bolts and nuts, a tool is required to set them, which takes time and effort. Further, if the bolt is sheared, the broken bolt or nut falls into the sea, which is not preferable. Also, since there are not many types of bolts in material and thickness, it is easy to find bolts with good strength that are not sheared during normal use but are reliably sheared when the claws are caught on a reef. is not.

JP 2002-193184 A

  The present invention has been made in view of the circumstances described above, and it is an object of the present invention to provide a heel that does not drop pins and the like, is easy to set and has high reliability of nail operation.

To achieve the above object, the bag according to the first aspect of the present invention comprises a main body, a shaft inserted into the lower portion of the main body, a claw pivotally supported on the lower portion of the main body by the shaft, and a base end portion of the claw And a shear pin that penetrates the lower part of the main body, and a pin pop-out prevention plate that is disposed on the surface opposite to the main body of the claw and that is rotatably supported by the shaft. have a pin insertion portion in at least one position of the parts, characterized in that a sliding plate between the base end portion of the lower main body and the claw.

  The scissors according to the first aspect of the present invention are provided with a rotary pin pop-out prevention plate on the surface of the base end portion of the claw opposite to the main body, and the pin pop-out prevention plate is provided at at least one place on the outer peripheral portion. It has a pin insertion part, and this pin insertion part is aligned with the nail and the pin insertion hole of the main body, a shear pin is inserted, and then the pin pop-out prevention plate is rotated to prevent the shear pin from coming off easily and reliably. it can. By providing such a rotating pin pop-out prevention plate, a simple round bar shape can be used as the shear pin, and since no tool is required to set the shear pin, it is easy to handle. Become. In addition, by appropriately changing the diameter and material of the shear pin and the number of shear pins to be used, the force when the shear pin is sheared and the claw rotates can be easily adjusted, and the rooting prevention function can be stably exhibited.

Furthermore, the hook according to the present invention can prevent the base end portion of the nail from being seized with the main body by providing a sliding plate between the lower portion of the main body and the base end portion of the nail. Can be improved.

It is a front view showing a 1st embodiment of a bag of the present invention. It is a bottom view of the same coffin. It is AA sectional drawing of FIG. It is an exploded perspective view of the same coffin. It is the front view which expands and shows the center lower part of the collar of 1st Embodiment, Comprising: (a) is a state when setting a shear pin, (b) shows the state which pulled out the shear pin. It is a figure which shows the use condition of the reed of 1st Embodiment, Comprising: (a) is the state which the nail | claw hooked on the reef, and (b) shows the state by which the nail | claw rotated and the root crush was eliminated. ing. It is a cross-sectional view of the axial support part of the nail | claw which shows 2nd Embodiment of the collar of this invention, (a) is a state with which the nail | claw is hold | maintained in a predetermined position, (b) is when a nail | claw rotates. Shows the state. It is a disassembled perspective view of the bag of 2nd Embodiment.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 5 show a first embodiment of the bag of the present invention. The main boat is used for a small boat such as a pleasure boat, and includes a rod-shaped main body 1 and two claws 3, 3 provided symmetrically at the lower portion of the main body 1 as shown in FIG. .

As shown in FIG. 1, the main body 1 is formed by welding plates 1b and 1c to an upper end portion and a lower end portion of a round pipe 1a. Holes 11 for connecting ropes and chains are formed in the upper plate 1b. As shown in FIG. 4, the lower plate 1c is formed with an insertion hole 12 of the shaft 2 for attaching the claws 3 and 3 at the center, and shear pins for fixing the claws 3 and 3 dispersed around it. Four insertion holes 13 are formed. In the lower part of the pipe 1a, rod-like stocks 14a and 14b are provided so as to protrude forward and rearward, and the stocks 14a and 14b prevent the folds from falling down.
The claw 3 is formed by welding a catch plate 3b to the distal end portion of an arm 3a formed in an upwardly curved shape, and as shown in FIG. 4, a round plate-like portion on the proximal end side of the arm 3a is formed. As with the plate 1c at the bottom of the main body, the insertion hole 15 of the shaft 2 is formed, and four insertion holes 16 of the shear pin 4 are formed dispersedly around the insertion hole 16. As shown in FIG. 3, the left and right claws 3 and 3 are pivotable by a single shaft 2 inserted in the front-rear direction, with the base end of the arm 3a applied to the front and rear surfaces of the lower plate 1c. Installed. Between the plate 1c at the lower part of the main body and the base end portion of the arm 3a, a sliding plate 7 made of a material having good sliding properties is sandwiched.
The left and right claws 3 are held at a predetermined angle by a shear pin 4 penetrating the base end of the arm 3a and the plate 1c at the bottom of the main body. Four insertion holes 13 and 16 of the shear pin 4 are formed in each of the plate 1c at the lower part of the main body and the base end portion of the arm 3a, but it is not always necessary to insert the shear pins 4 in all of the insertion holes. The claw 3 may be fixed with only the shear pin 4 of the book.

As shown in FIGS. 3 and 4, a disc-shaped pin pop-out prevention plate 5 is rotatably provided through the shaft 2 on the surface of the base end portion of the arm 3 a opposite to the main body 1. The pin pop-out prevention plate 5 has a notch 6 for inserting a pin and an operation knob 17 formed by cutting and raising at two locations on the outer peripheral portion. When the shear pin 4 is set, as shown in FIG. 5 (a), the pin pop-out prevention plate 5 is placed at a position where the insertion holes 13 and 16 of the shear pin of the arm 3a and the lower body plate 1c are viewed from the notch 6 for pin insertion. After the shear pin 4 is inserted, as shown in FIG. 5B, the pin pop-out prevention plate 5 is rotated a little to hide the shear pin insertion holes 13 and 16. Thereby, it is possible to reliably prevent the shear pin 4 from coming off.
As shown in FIG. 3, the pin pop-out prevention plate 5 is pressed against the arm 3a by a disc spring 8, so that the pin pop-out prevention plate 5 can be easily rotated by hand and does not rotate naturally. It has become.
The shaft 2 has a flange portion 2a at a front end portion, a female screw portion 2b is formed at a rear portion, and a nut 20 is hung on the female screw portion 2b and fixed.

  The main body is constructed as described above, and if the rope 18 or the like is connected to the hole 11 of the plate 1b on the upper part of the main body 1 and submerged in the sea, the catch plate 3b at the tip of the claw 3 is caught on the seabed, and the ship is fixed. Can be parked in position. As shown in FIG. 6A, when the claw 3 is to be lifted while the claw 3 is caught on the reef 19, the shear pin 4 is sheared as shown in FIG. And the claw 3 is detached from the reef 19 so that the reed can be collected without damaging the claw 3. When the heel is used again, as shown in FIG. 5 (a), the pin pop-out prevention plate 5 is rotated, a new shear pin 4 is inserted and the claw 3 is fixed, and the pin pop-out prevention plate 5 is shown in FIG. The shear pin 4 is prevented from coming off by rotating as shown in FIG.

  As described above, the main iron is provided with the rotary pin pop-out prevention plate 5, so that the shear pin 4 does not fall out even if a simple round bar-shaped shear pin 4 is used. The retaining operation can be easily performed by rotating the pin protrusion prevention plate 5. By changing the thickness, material, and number of shear pins 4 used, the magnitude of the force when the claw 3 starts to rotate can be adjusted. Since the sliding plate 7 is disposed between the lower plate 1c and the claw 3, the claw 3 is prevented from being seized with the main body 1, and the claw 3 can be reliably rotated.

  7 and 8 show a second embodiment of the bag of the present invention. In the present embodiment, the shear pin 4 is not used to fix the claw 3 but a bearing structure using a plurality of steel balls 10 is employed. A plurality of hemispherical recesses 9a into which the balls 10 are fitted are distributed around the insertion hole 12 of the shaft 2 on the front and rear surfaces of the plate 1c at the lower part of the main body. A plurality of dents 9 b into which the ball 10 is fitted are provided around the insertion hole 15 of the shaft 2. Between the plate 1c at the bottom of the main body and the base end portion of the claw 3, as shown in FIG. 7 (a), balls 10 are arranged so as to be fitted into the four recesses 9a and 9b, respectively. The claw 3 is held at a predetermined angle via the ball 10. In the recesses 9 a and 9 b, the nail side recess 9 b is slightly shallower than the main body side recess 9 a, and there is a slight gap between the main body 1 and the nail 3. The claw 3 is pressed against the main body 1 by a disc spring 8 arranged in a stacked state.

  When the nail 3 is caught on a reef and a certain force is applied to the nail 3, as shown in FIG. 7B, the ball 10 is released from the nail 9b and the nail 3 rotates about the axis 2. Thereby, the catch of the nail | claw 3 is eliminated and wrinkles can be collect | recovered, without damaging the nail | claw 3. If the claw 3 is rotated to the original position after the scissors are collected, the ball 10 is fitted in the claw-side recess 9b and automatically returns to the initial state.

  According to the present embodiment, the shear pin 4 which is a consumable item is not required, so that the handling is further simplified and economical. By adjusting the tightening force of the nut 20, the magnitude of the force when the claw 3 starts to rotate can be easily adjusted. Once the ball 10 is removed from the recess 9b, the claw 3 is lightly rotated by the rolling of the ball 10.

  The present invention is not limited to the embodiments described above. The shape, material, and the like of the main body 1 and the claws 3 can be changed as appropriate, and the number of the claws 3 may be one or three or more. The pin insertion part provided in the pin pop-out prevention plate 5 is not limited to a notch shape, and may be a hole shape.

1 Main body 2 Axes 3 Claws 4 Shear pins 5 Pin pop-out prevention plate 6 Notches for pin insertion (pin insertion part)
7 Sliding plate 8 Disc spring (spring)
9a, 9b dent 10 balls

Claims (1)

The main body, a shaft inserted into the lower portion of the main body, a claw pivotally supported on the lower portion of the main body by the shaft, a shear pin penetrating the base end portion of the nail and the lower portion of the main body, and a base end portion of the nail opposite to the main body disposed on a surface side and a prevention plate jumping pin and rotatably supported by the shaft, the pin thrust preventing plate, have a pin insertion portion in at least one position of the outer peripheral portion, the lower main body and the claw A scissors characterized in that a sliding plate is provided between the base end portion .

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