JP2001088779A - Floating pier for raising and lowering of boat - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pier for raising and lowering of a boat capable of safely and easily carrying out raising and lowering of the boat to and from a quay from and to a water surface. SOLUTION: A land part 3, a skew bridge part 4 and a shipway 5 are connected to each other in one line through hinges 6, 7, the land part is projected on to a quay, the skew bridge part is projected on a water surface and the shipway is installed on a front end of the skew bridge part. A float 23 is provided on the front end of the skew bridge part and is made to float at a specified position on the water surface. A guide rail 12 is laid in the middle of the land pat and the skew bridge part, and a movable body 13 is installed on it. This moving body is driven by a first driving source 20. An inclination of the shipway is varied and controlled by a second driving source 31.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a floating pier for lowering and lowering a boat so that the boat can be easily lowered and lowered on the surface of a sea or a lake.

[0002]

2. Description of the Related Art Conventionally, as a structure for lifting and lowering a motor boat, a yacht or the like (hereinafter referred to as a boat) from land to water, a slope body having one end supported on a quay and a buoyant body attached to the other end is used. (Japanese Utility Model Laid-Open No. 57-178830) or a connected main bridge, an intermediate bridge, and a tip bridge. One end of the main bridge is moored to the quay, and the intermediate bridge is floated. It has been proposed that an air reservoir having a floating structure is attached to the free end at the tip of the bridge portion so that the free end can be raised and lowered. JP-A-9-78527).

[0003]

[Problems to be solved by the invention]
No. 7,178,830) discloses a structure in which a boat is placed on a trailer and pulled by a towing vehicle connected to the trailer by a rope. However, in such a structure, if the slope body swings due to waves, wind, etc., or if the slope angle of the slope body increases when the water level drops, the trailer and tow truck are connected with a rope depending on the angle of the land on the land It is expected that it will be difficult to do so. Furthermore, the work of placing the boat on a trailer, pulling the boat with a towing vehicle, and lifting and lowering the slope body is a dangerous work.

[0004] The latter publication (Japanese Patent Laid-Open No. 9-78527) does not disclose any specific structure for lifting and lowering a boat. When a boat is lifted and lowered using a pier having such a structure, it is presumed that the method described in the above-mentioned publication is used. However, this method has many problems as described above.

The present invention has been made in view of such circumstances, and provides a floating pier for lifting and lowering a boat, which can safely and easily lift and lower the boat.

[0006]

SUMMARY OF THE INVENTION A floating pier for lifting and lowering a boat according to the present invention is installed on a quay and protrudes above the land and water surface where a guide rail on which a moving body for moving a boat trailer is formed is formed. It is installed and one end thereof is connected to the tip of the land part via a hinge part, and a float is attached to the lower end of the other end and is floated on the water surface, forming a guide rail on which a moving body for moving a boat trailer runs. A sloping bridge portion, a first drive source for driving the moving body, a stool connected to the other end of the sloping bridge portion via a hinge portion, and a boat trailer mounted thereon, the sloping bridge of the stool A second drive source for variably controlling the inclination angle with respect to the unit, and connecting the boat trailer equipped with a boat to the moving body, and connecting the boat to the moving body. In which down fried of the boat is made by vertically moving.

In such a configuration, the land portion is installed on the quay, and the diagonal bridge rotates vertically with respect to the land portion in accordance with a change in water level, and its inclination angle changes. The other end of the oblique bridge is floated on the water surface by a float, and is always at a certain height above the water surface. The stand is variably controlled in inclination angle with respect to the diagonal bridge. For example, when lowering a boat from the land to the surface of the water, the boat is placed on the land along with the trailer, the trailer is connected to the moving body, and the first drive source is driven to move. Move the body from the land to the diagonal bridge. On the land, the moving body pushes the trailer upward, and in the diagonal bridge section, it slowly moves downward while supporting the trailer that is going to move downward, moves to the side of the boat, and stops. Thereafter, when the gantry is rotated downward, that is, the tip of the gantry sinks below the water surface, the boat separates from the trailer and floats on the water surface. The trailer is lifted from the dock to the land through the diagonal bridge by moving the moving body in the opposite direction.

[0008] In the present invention (claim 2), the float comprises a main float located below and an auxiliary float located above, and a load of a boat or the like is not applied to the diagonal bridge portion or the pedestal portion. In the state, only the main float is in contact with the water surface, the auxiliary float is in the air, and when a load such as a boat is applied to the diagonal bridge portion or the sill portion, the auxiliary float is in contact with the water surface to increase buoyancy. It will increase.

[0009] In this configuration, when the boat or the like is not loaded on the diagonal bridge portion or the sill portion, the diagonal bridge portion and the sill portion are floated on the water surface by the buoyancy of only the main float. When a boat and a trailer are placed on a diagonal bridge or dock, the weight of the boat and trailer lowers, but when the auxiliary float is placed on the water surface, new buoyancy is generated, And the sill part only descends slightly, and the state of floating above the water surface is maintained.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS In FIGS. 1 to 3, reference numeral 1 denotes a floating pier for lifting and lowering a boat, which is composed of a land part 3 installed on Kishi Hajime 2, a diagonal bridge part 4 protruding from the water surface, and a pedestal 5. These are connected in a line, and hinges 6 and 7 are provided at connecting portions of the respective portions, so that the hinges 6 and 7 are rotatable in the vertical direction. Reference numerals 8 and 8 denote a pair of support frames stretched between both sides of the diagonal bridge 4 and the quay 2. The front end of the diagonal bridge 4 swings under the influence of wind, waves, water current, and the like. To prevent Reference numerals 9 and 10 denote three frames formed on both sides and the center of the land part 3 and the diagonal bridge 4, 11 denotes a wooden deck stretched over the frames 9 and 10, and 12 denotes a center frame 10. The guide rail 13 mounted above is a moving body which is fitted on the guide rail 12 and moves.

The movable body 13 is mounted on a guide 14 fitted on the guide rail 12, a column 15 supported at the end of the guide 14 at right angles thereto, and on both sides of the column 15. It has a pair of mouth rollers 16,16,
The rollers 16 run on the deck 11. 17 is a hook connected to the trailer 18, and 19 is a bent arm. The moving body 13 is driven by the first drive source 20. As the first drive source 20, a motor that can rotate forward and backward can be used. The support 15 can be folded at the bent arm 19 in the direction of the other end of the guide 14 as shown in FIG. 21
Is a wire rope connected to both ends of the guide 14 and is housed in the guide rail 12. Reference numeral 22 denotes a handrail for preventing derailing attached to the frames 9 on both sides.

Reference numeral 23 denotes a float mounted below the front end of the diagonal bridge 4, that is, below the water-side end, and floats on the water surface to maintain the other end of the diagonal bridge 4 at a constant height from the water surface. ing. The float 23 has an upper and lower two-stage structure, and includes a lower main float 24 and an upper auxiliary float 25, both of which are arranged at a predetermined interval. The main float 24 is always in contact with the water surface (including submergence) under the weight of the diagonal bridge 4 and the pedestal 5, and gives a constant buoyancy to the diagonal bridge 4 and the gantry 5. When the trailer 18 and the boat 26 are not placed on the inclined bridge 4 and the pedestal 5, the auxiliary float 24 is located away from the water surface and in the air. When an equal load is applied, a decrease in the front end of the inclined bridge 4 causes buoyancy in contact with the water surface, and acts to prevent the front end of the inclined bridge 4 from sinking below the water surface.

The gantry 5 is a platform for lowering the boat 26 from the trailer 18 to the surface of the water or placing the boat 26 on the trailer 18 from the surface of the water. This operation is performed with the gantry 5 stopping the trailer 18. The tip of the gantry 5 is a free end, and rotates around a hinge 7 with the inclined bridge 4. Reference numeral 27 denotes a wire rope for rotating the gantry 5, and its tip is connected to the free end of the gantry 5 near both sides.
Reference numeral 28 denotes a pulley fixed near the tip of the oblique bridge 4 via a column 29, and reference numeral 30 denotes a pulley fixed near the lower end of the column 29, around which a wire rope 27 is hung. The wire rope 27 is connected to the second drive source 31. A hoist can be used as the second drive source 31. First and second
The driving sources 20 and 31 are installed on land.

In FIG. 4, reference numeral 32 denotes a pulley fixed to the drive shaft 33 of the first drive source 20, and reference numeral 34 denotes a two-stage pulley located below the rear end of the land portion 3. The first-stage pulley 35 and the pulley 32
A wire rope 36 closed between them is wound. 37
Is a pulley provided near the rear end of the diagonal bridge 4; 38 is a pulley provided near the front end of the diagonal bridge 4;
A closed wire rope 21 is wound between the pulley 38 and the moving body 13 is fixed to the wire rope 21. The wire rope 21 is disposed below the land part 3, and the upper part of the wire rope 21 is
The lower part is the land part 3 and the diagonal bridge 4
Threaded underneath.

Reference numeral 40 denotes a circular ring attached to the drive shaft 41 of the second drive source 31 and one end of each of the two wire ropes 27 is fixed and wound. 42 is
A pulley fixed downward near the rear end of the diagonal bridge 4, a pulley 43 fixed downward near the front end of the diagonal bridge 4, and the two wire ropes 27, 27
It is fixed to the tip of the gantry 5 via 8, 30, 43. Therefore, the wire ropes 27 and 2 are
When the wire 7 is wound up, the gantry 5 rotates in the direction of the arrow a, and when the wire ropes 27, 27 are released, the gantry 5 rotates in the direction of the arrow b.

Next, a method of using the floating pier 1 having such a structure will be described with reference to FIG.

(A) Trailer 1 equipped with boat 26
Numeral 8 is located on land portion 3 while being connected to towing vehicle 44. When moving the trailer 18 from the ground onto the land portion 3, the support 15 of the moving body 13 is tilted. This is because the bottom of the trailer 18 is not brought into contact with the column 15. Next, the trailer 18 is disconnected from the towing vehicle 44 and connected to the moving body 13. When the first turbulence source 20 is driven to move the moving body 13 in the water surface direction, the trailer 1
8 is pushed by the moving body 13 to move in the water surface direction, that is,
Move in the direction. (B) The trailer 18 tries to descend on the inclined surface due to its own weight in the inclined bridge section 4, but its movement is restricted by the moving body 13 and descends at a gentle constant speed. This descent speed is adjusted by the rotation speed of the first drive source 20. (C) When the moving body 13 moves to the tip of the inclined bridge portion 4,
The first drive source 20 is stopped. At this time, trailer 18
Is located on the platform 5. The diagonal bridge 4 and the gantry 5 slightly rotate in the sinking direction due to the weight of the boat 26 and the trailer 18, but the auxiliary float 25 contacts the water surface and increases buoyancy. The part 4 and the tip are kept floating above the water surface. (D) The second drive source 31 is driven, the wire rope 27 is loosened, and the gantry 5 gradually rotates in the direction of arrow b. When the boat 26 is turned to a state where it floats on the water surface due to its buoyancy, the boat 26 separates from the trailer 18. Thus, the boat 26 is lowered on the water surface. When lifting the boat 26 from the surface of the water to the land, the operation opposite to the above operation is performed.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The frame of the land part 3 and the diagonal bridge 4, the support frame 8 for supporting the diagonal bridge 4 from the quay 2, the guide 14 of the moving body 13, the support 15, etc. are made of aluminum, and the deck 11 is made of wood. can do. The gantry 5 can be constituted by FRP. About the dimensions of each part, the land part 3 is 2.5m
× 10m, the slope bridge 4 is 2.5mx15m. The stand 5 is 2.
It can be 5 m x 6 m. The buoyancy of the main float 24 is 1500 kg and the buoyancy of the auxiliary float 25 is 500 kg
With such buoyancy, the weight of the boat 26 is about 500 kg, and the weight of the trailer 18 is about 200 kg
Can be fully supported. When the size of the inclined bridge 4 is set to the above-mentioned size, it is possible to sufficiently cope with a difference in tide level of about 4 m between high tide and low tide.

[0019]

According to the present invention (claim 1), it is possible to easily and safely lift and lower a boat by using a moving body that moves on a guide rail. In particular, the lifting and lowering operation can be automatically performed by using the first and second drive sources, so that it is free from dangerous and cumbersome operation by hand.

Further, according to the present invention (claim 2), the float has a two-stage structure, and only the lower first stage float is always floated on the water surface, and the upper second stage float is unloaded. Since it is placed in the air and generates buoyancy in contact with the surface of the water when a boat or other load is applied, even if a relatively heavy boat or trailer is placed on a diagonal bridge or a platform, it will move down. Is small and there is no risk of disturbing the lifting and lowering of the boat.

[Brief description of the drawings]

FIG. 1 is a perspective view of a floating pier for lifting and lowering a boat according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of a diagonal bridge.

FIG. 3 is a side view showing a moving body.

FIG. 4 is a perspective view showing a drive transmission path.

FIG. 5 is a schematic diagram for explaining a method of use.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Floating pier for unloading and unloading boats 2 Wharf 3 Land part 4 Sloping bridge part 5 Ship stand 6,7 Hinge 8 Support frame 9,10 Frame 11 Deck 12 Guide rail 13 Moving body 14 Guide 15 Prop 16 Roller 18 Boat trailer 20,31 1, second drive source 21, 27, 36 wire rope 23 float 24 main float 25 auxiliary float 26 boat 28, 30, 32, 34, 35, 37, 39, 42, 4
3 pulley 40 yen ring

Continued on the front page (72) Inventor Shinji Fujimoto 1-8 Yokokawa Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Pref. (72) Inventor Hideki 1-8 Yokogawa Shinmachi, Nishi-ku, Hiroshima City, Hiroshima Pref. Molten F Terms (Reference) 2D059 BB13 BB15 GG55

Claims (2)

[Claims] 1. A land part which is installed on a quay and has a guide rail on which a moving body for moving a boat trailer is formed. The land part protrudes from the water surface, and one end thereof is connected to a tip of the land part via a hinge part. A diagonal bridge section which is connected and has a float attached to the lower end of the other end and is floated on the water surface and formed with a guide rail on which a moving body for moving the boat trailer travels, a first drive for driving the moving body A pedestal connected to the other end of the oblique bridge via a hinge, and a second drive source for variably controlling an inclination angle of the pedestal with respect to the oblique bridge. By connecting the boat trailer equipped with a boat to the moving body, and moving the boat over the land and the diagonal bridge with the moving body, Floating jetty for unloading boat fried the lower down is made. 2. The float comprises a main float located below and an auxiliary float located above, and when no load such as a boat is applied to the diagonal bridge portion or the sill, only the main float is on the water surface. 2. The boat lift according to claim 1, wherein the auxiliary float is in the air, and the auxiliary float contacts the water surface to increase buoyancy when a load such as a boat is applied to the oblique bridge or the sill. 3. Floating jetty for unloading.