JPH0412879Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application of the invention] The invention is a lifting and lowering device for a small boat that lowers and lowers a small boat, etc., weighing less than 0.5 tons and having a length of less than 20 feet, between the water surface and a quay. It is related to.

[Conventional technology]

Conventionally, as a lifting device for small vessels such as boats,
Types of ramps and those equipped with lifts are used.

Therefore, as an example of a ramp type, one end is fixed to the quay in a hinged manner, the other end is curved, and a buoyancy tank is attached to the other end to make the other end float when the hull is loaded. The invention of Japanese Patent Application Laid-Open No. 158096 (1973) regarding a launching or salvage platform is known,
In this case, there is a problem in that the area occupied by the quay in front of the water area increases.

Furthermore, as examples of lift-type devices, the inventions of JP-A-52-86698 relating to a device for lifting and lowering goods in ports and JP-A-52-86699 relating to a lifting device for small vessels are known, but both of these inventions were applied to a quay. A platform is installed in a frame that stands up from the seabed in front of the ship, and a small boat is placed on the platform and moved up and down.This requires large equipment, is uneconomical, and requires a lot of effort to operate the lift. There was a problem with the need for licenses and qualifications.

[Purpose of invention]

The present invention was developed in order to solve the above-mentioned problems of the conventional technology. Its purpose is to provide lifting and lowering equipment for ships.

[Summary of the idea]

A turntable is installed on a quay at an angle, and a platform is fixed at the tip of an arm provided on the turntable, so that a small boat can be placed on the platform, and the rotation angle of the turntable can be adjusted freely. It consists of a lifting and lowering device, and a small boat is fixed together with the platform on the pedestal at the end of the arm of the turntable.
By rotating the turntable approximately 90 degrees,
The tip of the arm moves below the water surface along with the pedestal, making it possible to float a small boat on the water surface. This allows the small boat to be lowered and raised, but the arm, which has a pedestal attached to the tip, rotates while tilting. When doing so, it is preferable to arrange the pedestal so that it always remains horizontal.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings. Figures 1-A and 1-B are side views partially in cross section of a lifting device for a small boat according to an embodiment of the present invention. , FIG. 2-A is a front view of FIG. 1-A, FIG. 2-B is a front view of a main part of FIG. 1-B, and FIG. 3 is a plan view of FIG. 1-A.

First, as shown in FIGS. 1-A to 3, a turntable 2 is provided which is obliquely inclined at the end of the quay 7 facing the water area W and is rotatable by a motor 1. A pedestal 5 capable of fixing a small vessel such as a small boat 4 is disposed at the other end of an arm 3 whose one end is attached to a table 2, and a cradle 8 on which a small vessel is mounted is mounted on the pedestal 5.

It is preferable that the pedestal 5 has a structure in which it is always kept horizontal by using a suitable combination of hydraulic cylinders, sensors, etc.; It may be firmly fixed.

Next, to explain the procedure for lowering the small boat 4 using this lifting device, the small boat 4 placed on the cradle 8 is guided along with the cradle 8 to the cradle 5. - Fix as shown in figure A.

Therefore, by rotating the turntable 2 by about 90 degrees as indicated by the arrow A in FIG. 3, the pedestal 5 is positioned below the water surface WL as shown in FIGS. 1-B and 2-B. On the other hand, the operation of raising the small boat 4 is
This is done by reversing the steps above.

In addition, in response to changes in the height of the water surface WL due to the tide level, by appropriately adjusting the rotation angle of the turntable 2, in other words, when the water surface rises, simply rotating the turntable slightly will reach the water surface and the water surface will rise. When descending, the water surface is reached by simply rotating the turntable more, and the small boat 4 can be smoothly raised and lowered from the water surface WL.

[Effect of idea]

As explained above, the present invention has the advantage that it occupies a small area of water, and the equipment is simple and economical.Moreover, no license or qualification is required for lifting and lowering the boat with a small boat. However, it has the advantage of being controllable.

In particular, the present invention has the advantage that, since no member of the lifting device is provided in the water area in front of the quay where a small vessel is lifted or unloaded, other vessels can berth on the quay.

Note that the device of the present invention can be effectively applied as a lifting device for small boats, etc., which are mainly less than 0.5 tons in weight and less than 20 feet in length.

In this invention, the turntable can be tilted to freely adjust the rotation angle, an arm is attached to the turntable, and a platform is provided at the tip of the turntable. (1) A small boat can be simply placed on the platform and the turntable can be adjusted. As long as the ship rotates, it reaches the water surface, and all that is needed is to bring it to the surface, so there is no need for extra manpower or power, and equipment costs and labor are reduced.

(2) When the height of the water surface changes due to the tide level, by appropriately selecting the rotation angle of the tilted turntable, it is possible to freely lower the vessel to the current water surface position.

(3) In addition to adjusting the rotation angle of the turntable as described above, changes in the height of the water surface can be easily accommodated by appropriately changing the length of the arm.

(4) It is possible for a small boat to land on the water surface simply by installing the turntable at an angle and rotating it.If the turntable is further rotated at the landing position and the boat platform is placed in the water, it is natural. A ship can be floated underwater.

In addition, there is no need for equipment or work to hoist small vessels one by one and place them on the berth, or to lower them one by one at the water surface.These processes can be performed simply by rotating a turntable, which saves time and effort. To enable simple, quick, and easy lifting and lowering of small vessels without requiring equipment costs.

[Brief explanation of the drawing]

Figures 1-A and 1-B are side views in partial cross section of a lifting device for a small boat according to an embodiment of the present invention, and Figure 2-A is a front view of Figure 1-A. 2-
Figure B is a front view of the main parts of Figure 1-B, and Figure 3 is a front view of the main parts of Figure 1-B.
It is a top view of figure A. 2... Turntable, 3... Arm, 4...
Small boat, 5... cradle, 7... quay.

Claims (1)

[Scope of utility model registration request] A turntable is installed on a quay at an angle, and a platform is fixed at the tip of an arm provided on the turntable, so that a small boat can be placed on the platform, and the rotation angle of the turntable can be adjusted freely. Lifting device.