JP3020710U - Retractable mast - Google Patents

Abstract

(57) [Summary] [Purpose] The mast can be made smaller, the space around the mast can be made larger, it is easy to process, and it has an excellent appearance. Labor saving, time reduction and safety of the mast up / down operation. Providing a retractable mast that facilitates navigation and makes navigation safe. [Structure] The support pins (2) and (2) are inserted into the lower front ends of both sides of the mast (1), and the fixing portions (3) and (3) are provided at the rear ends thereof, and the mast (1) is reinforced with glass fiber. A retractable mast that is made of plastic and is connected to the center of the mast (1) by an electric remote-controlled cylinder (4) that expands and contracts around the hull cylinder fulcrum (5).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a retractable retractable mast for a ship whose height is restricted during navigation.

[0002]

[Prior art]

 Conventionally, as a tilting mast, it is composed of a metal pipe (7) shown in FIGS. 4 and 5, and the supporting portions (8) and (8) are rear ends, and the rope (9) and the sliding portion (8) are used to move it up and down. It was a car (10).

[0003]

[Problems to be solved by the device]

 The conventional retractable masts shown in FIGS. 4 and 5 have the following drawbacks. (I). Since the support portions (8) and (8) are at the rear end, when the mast is lowered, the mast protrudes above the support portions (8) and (8), and the protruding amount corresponds to the support portion (8) ( 8) had to be lowered, so the mast became longer by that length, and the space was occupied by the mast. (B). As it is composed of metal pipes (7), it lacks a sense of volume visually, a harmonious hull connected to the surroundings of the mast cannot be prepared, and coloring is not possible. Was spoiling the appearance of. (C). Since the rope (9) and the pulley (10) are used, it takes labor and time to raise the mast, and when lowering the mast, a natural fall is used to operate the rope (9) and the mast. It was dangerous to be careful of his movements. (D). Generally, the mast is equipped with radar, navigation lights, and work lights outfitting parts, but it took a lot of work, so many of these outfitting parts could not be installed. In addition, since it is a metal pipe (7), it took a lot of time to attach and process the fitting parts. (E). When the mast is lowered, the radar, navigation lights and work lights are not used, and it is not safe to navigate. Therefore, the conventional mast, which requires a long time to raise and lower the ship, is more dangerous during navigation. In particular, if there are several height-restricted bridges between the inside and outside of the port, considerable effort is required, which is even more dangerous. The present invention has been made to solve the above drawbacks of the conventional technology.

[0004]

[Means for Solving the Problems]

 The support pins (2) and (2) are inserted into the lower front ends of both sides of the mast (1), and the fixing portions (3) and (3) are provided at the rear ends thereof. And it is preferable that the mast (1) is made of glass fiber reinforced plastic. In addition, a cylinder that can be remotely operated electrically is connected by a pin to the cylinder fulcrum of the hull and the center of the mast (1).

[0005]

[Action]

 When raising the mast (1), the electric remote-controlled cylinder (4) is extended so that the mast (1) rises with the support pins (2) and (2) as fulcrums, and the fixed portions (3) and (3). ) Is part of the hull (6) and the mast (1) is fixed and maintains a stable position. When the mast (1) is lowered, the electrically remote-controlled cylinder (4) is contracted so that the mast (1) is lowered with the support pins (2) and (2) as the fulcrum, and the electrically remote-controlled cylinder (4) is moved. ) Has become the shortest, the mast (1) is stowed below the support pins (2) (2).

[0006]

【Example】

 Examples will be described with reference to the drawings. 1 and 2 will be described. The support pins (2) and (2) are inserted into the lower front ends of both sides of the mast (1), and the fixing portions (3) and (3) are provided at the rear ends thereof. Masts made of glass fiber reinforced plastic are preferred. Furthermore, an electric remote-controlled cylinder (4) that expands and contracts around the hull cylinder fulcrum (5) is connected to the center of the mast (1). Also, the cylinder is a marine-use hydraulic cylinder that has few failures and large torque, and is commercially available. Pins, bolts, nuts, and bushes are used to connect the cylinders. As shown in Fig. 3, a mast that leans in the traveling direction of the ship can be implemented by freely changing the positions of both ends of the cylinder.

[0007]

[Effect of device]

 Since the present invention is configured as described above, it has the following effects. By inserting the support pins (2) and (2) into the lower front ends of both sides of the mast (1) so that the mast (1) can be raised and lowered, the mast (1) can be lowered. (1) can be stored below the support pins (2) and (2). In other words, the mast (1) can be downsized and the space around the mast can be increased. Also, if the mast (1) is made of glass fiber reinforced plastic, it has a visually voluminous feel and can be arranged with a harmonious hull that connects to the surroundings of the mast, and coloring can be added freely. . Moreover, when mounting the mast mounting outfitting parts, the processing becomes easy, and the glass fiber reinforced plastic can be mass-produced because it is molded. Furthermore, since the electric remote control cylinder (4) is used for the vertical operation of the mast (1), the mast mounting outfitting parts can be large and large in number, which saves labor and time for operation. It's safe. In addition, since the mast can be equipped with outfitting parts that are indispensable for navigation, time saving and labor saving lead to navigation safety.

[Brief description of drawings]

FIG. 1 is a perspective view of the mast of the present invention in a raised state as seen from the right rear side.

FIG. 2 is a perspective view of the mast of the present invention in a lowered state as seen from the right rear side.

FIG. 3 is a right side view showing an example of the present invention.

FIG. 4 is a perspective view of a conventional retractable mast in a raised state as seen from the right rear side.

FIG. 5 is a perspective view seen from the right rear of the conventional retractable mast in a lowered state.

[Explanation of symbols]

 1 Mast 2 Support Pin 3 Fixed Part 4 Electric Remote Controlled Cylinder 5 Hull Cylinder Support 6 Hull 7 Metal Pipe 8 Support 9 Rope 10 Pulley

Claims (3)

[Scope of utility model registration request] 1. At the front end of the lower part on both sides of the mast (1),
A retractable retractable mast having support pins (2) and (2) inserted and fixing portions (3) and (3) provided at the rear end thereof. 2. The retractable mast of claim 1, wherein the mast (1) is made of glass fiber reinforced plastic. 3. The retractable mast according to claim 2, wherein an electric remote control cylinder (4) extending and contracting around the hull cylinder fulcrum (5) is connected to the center of the mast (1).