JP2002302387A - Boat lifter device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve operability, and smooth operation. SOLUTION: A boat B is placed on a boat pallet 7 lowered in the water by a carriage 37, and when extending a power cylinder 8 by switch operation, a vertically moving beam 6 rises by a double stroke of a cylinder stroke by a roller chain 44 together with the boat pallet 7. Next, after turning the boat pallet 7 on the ground together with a turntable 2 by a turning driving device 3, the boat pallet 7 is lowered to a recess position by contracting the power cylinder 8, and the boat is unloaded on the ground. Since a support wheel 11 supports an unbalanced load of the boat and a counterweight 12 equalizes the load in the operation, the turntable 2 can smoothly turn.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a boat lifter device for lifting a leisure boat or the like moored on the shore of a river or lake from the surface of the water or lowering a land-based boat on the surface of the water. .

[0002]

2. Description of the Related Art The following type of boat lifter is known. (A) Lifting method using a traveling crane (b) Slope lifting method using an electric winch (c) Forklift vehicle method (d) Truck crane method

[0003]

The above crane systems (a) and (d) have a problem in that a license is required for crane operation and no one can easily operate the crane. In addition, the method of raising the inclined surface shown in FIG. 2B has a problem that installation restrictions are large because a large space is required. As shown in (c) and (d), the lifter mounted on the car can be used to land the boat at or near the mooring site of the boat. I have to complain that it requires years of experience and skills.

By the way, illegal mooring of boats has become a social problem, and the introduction of a boat registration system including the mandatory storage of boats is currently under serious consideration by relevant ministries and agencies. There is a demand for the development of an excellent boat lifter device that has good operability and can be operated by anyone.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems and to meet the needs of the art, and to provide a boat lifter device having a relatively simple structure and excellent operability. It is another object of the present invention to provide a boat lifter device that operates smoothly and has excellent durability. Another object of the present invention is to provide a boat lifter device that is environmentally friendly and easy to maintain.

[0006]

In order to achieve at least one of the above-mentioned objects, according to the first aspect of the present invention, there is provided a fixed base fixed to a quay, and a horizontally turnable fixed base mounted on the fixed base. A turntable for turning the turntable with respect to the fixed base, a pair of left and right turning beams vertically provided on one side of the turntable, and a boat pallet provided at a lower end thereof; A pair of left and right vertically moving beams attached to the beam so as to freely move up and down, and a rope such as a roller chain with one end fixed to the turntable side and the other end fixed to the vertical beam side are moved at the tip of the rod. A cylinder provided on the turntable wound around a pulley and configured to move the vertically moving beam up and down with respect to the swivel beam; And that it has and a supporting wheel which is provided while being guided by the support rail.

In this means, the turntable is operated by the turning drive to turn the turning beam toward the water surface side, and then the vertical moving beam is lowered by the cylinder, so that the boat pallet is submerged. In this state, the boat is placed on the boat pallet, and the boat pallet is raised by the cylinder together with the vertical movement beam. When the boat pallet rises slightly above the ground, the cylinder is stopped, and the turntable is operated by the turning drive to turn the boat pallet to the ground.

[0008] In the above operation, the support wheels support the unbalanced load when the boat is placed on the boat pallet. Therefore, the turntable smoothly turns and the durability is improved. If the counterweight is placed on the end of the turntable opposite to the turning beam, the above-mentioned effect is further improved. Note that two sets of support wheels are provided outside the center of gravity of the unbalanced load, and most of the total load (for example, 80% or more)
Is preferable. In addition, the vertical movement stroke of the boat pallet is twice the expansion stroke of the cylinder. Therefore, a long cylinder is not required.
If the turning beam and the vertical beam are provided with ladders that can move on each other at the highest position of the vertical beam,
Maintenance becomes easy.

As the cylinder, besides a normal hydraulic cylinder or an air cylinder, a power cylinder that expands and contracts a rod by operation of a ball screw by an electric motor can be used. In this way, when the cylinder is a power cylinder, unlike a hydraulic cylinder, environmental pollution due to leakage of hydraulic oil can be prevented, and the entire structure is simplified because a hydraulic unit is not required.

[0010] In the boat lifter device according to the second aspect, it is preferable that the pair of right and left power cylinders is provided by connecting a rod to a synchronization member guided by the pair of swiveling beams. In this configuration, the synchronization member mechanically synchronizes the expansion and contraction operations of the pair of power cylinders. This eliminates the need for an electric motor synchronization circuit. In addition, since the synchronization member is guided by the swivel beam, there is no rotational force due to the frictional resistance of the ball screw, and the up-down movement of the up-down movement beam is smooth.

[0011]

Embodiments of the present invention will be described with reference to the accompanying drawings. The attached drawings show an embodiment of a boat lifter device according to the present invention. This boat lifter device A
Are a fixed table 1, a turntable 2, a turning drive device 3, a pair of left and right turning beams 4, a pair of right and left vertically moving beams 6, a boat pallet 7, a pair of right and left power cylinders 8,
A synchronizing member 9, a pair of left and right support wheels 11, and a counter eight 12 are provided.

The fixed base 1 is horizontally fixed to the quay 14 with anchors 15 (FIG. 3). The turntable 2 has a circular shaft portion 2a, and an outer peripheral surface of the shaft portion 2a and a fixed base 1a.
A number of steel balls 16 are interposed between the inner surface of the
It is mounted so that it can turn horizontally horizontally. The steel balls 16 reduce the rotational resistance of the turntable 2 and are divided into upper and lower stages. On the outer periphery of the shaft portion 2a of the turntable 2, a chain guide 2b having an arc-shaped planar shape is provided.
Are fixed horizontally about the turning center O of the turntable 2.

The turning drive 3 includes an electric motor 18,
A worm speed reducer 20 that is rotated by the electric motor 18 to rotate the turning sprocket 19; a worm speed reducer 20 that is wound around the turning sprocket 19 and the chain guide 2b; The turntable 2 can be turned in either the left or right direction with respect to the fixed base 1 by the rotation of the turning sprocket 19 by the electric motor 18. .

The electric motor 18 includes proximity switches 23 and 2
4 (FIG. 11) automatically stops when the dogs 25 and 26 are detected. Proximity switches 23 and 24 are
The dogs 25 and 26 are mounted on the shaft 2a at a predetermined angle, for example, 120 degrees out of phase with each other. Dog 25,
26 are drawn side by side in FIG. 11 for convenience.

The swiveling beams 4 and 4 have a channel structure, and are vertically provided at one side of the turntable 2 at predetermined intervals and supported by an inclined member 28 with open surfaces facing each other. .

The vertical motion beams 6 and 6 also have a channel structure, and are integrally coupled by a coupling member 30 with their open surfaces facing each other, and are provided with a plurality (a total of four each of upper, lower, left and right) of guide rollers 32 (FIG. 2). , FIG. 5) and plural (one each for upper, lower, left and right, total 4)
The side rollers 33 are guided by the swivel beams 4 and 4 and are vertically movably mounted between the swivel beams 4 and 4. The guide roller 32 supports the vertical load of the vertical motion beam 6 to support the front and rear movement of the beam 6.
Are for supporting the left and right eccentric weight by suppressing the left and right movement of the up and down moving beam 6, all of which are attached to the up and down moving beam 6 to make the up and down movement of the up and down moving beam 6 smooth.

The boat pallet 7 carries the boat B and is mounted horizontally at the lower ends of the vertically moving beams 6 and 6. On the upper surface of the boat pallet 7, a guide rail 38 of a boat cart 37 is laid. by the way,
The proximity switch 23 and the dog 25 stop the electric motor 18 when the boat pallet 7 turns vertically to the wall surface 14a of the quay 14, and the proximity switch 24 and the dog 26 are set at a predetermined angle from the vertical position (this embodiment). Then 120
Degree) The electric motor 18 is stopped at the turned recessed position.

A ladder 40 is mounted on the upper side surface of the swivel beam 4, and a ladder 4 is mounted on the lower side surface of the vertically moving beam 6.
1 and a work stage 42 are attached. Ladder 4
Covers (safety guards) are attached to 0 and 41, so that the ladder can move from one ladder to the other when the up-and-down motion beam 6 is at the highest position. Ladder 41 of vertical beam 6
Are provided with a gap serving as a path for the swiveling beam 4 so as not to hinder the vertical movement of the vertical beam 6. The ladders 40 and 41 are used not only for ascending and descending to the work stage 42 but also for maintenance and the like. However, the vertical movement of the up-and-down moving beam 6 prevents equipment and the like from being caught between them.

A pair of right and left vertical roller chains (lines) 44 are provided between the bridging member 43 provided between the swiveling beam 4 and the inclined member 28 and the vertical moving beam 6 at both ends thereof. And the vertical movement beam 6.

The power cylinder 8 includes a roller chain 44
The vertical motion beam 6 is moved up and down through
The electric motor 8a, the worm speed reducer 8b rotated by the electric motor 8a, and the worm speed reducer 8b rotate the ball screw (or the ball nut, all of which are in the cylinder body and cannot be seen) to extend and contract. And is mounted on the turntable 2 by a pivot 46 so that it can be turned up and down (right and left in FIG. 2).

The rods 8c, 8c of the power cylinders 8, 8
Is provided with a synchronization member 9, and at both ends of the synchronization member 9,
Movable pulley 48 and guide wheel 49 composed of a chain sprocket
And a cover 50 are provided. And the moving pulley 48
The above-mentioned roller chain 44 is wound (half-wound) on the upper half, and the guide wheel 49 is fitted into a channel-shaped guide portion 4 a provided on the swivel beam 4.

The synchronizing member 9 synchronizes the operation of the power cylinders 8, that is, the vertical movement of the rods 8 c, 8 c, while preventing the turning of the moving pulley 48 by eliminating the rotational force caused by the frictional resistance of the ball screw. Is what you do. The cover 50 is provided to cover the upper portion of the moving pulley 48, and prevents the roller chain 44 from coming off the moving pulley 48 due to loosening.

The vertical movement stroke of the vertical movement beam 6 by the power cylinder 8 is twice the expansion and contraction stroke of the rod 8c. The load applied to the power cylinder 8 is applied vertically to the center of the pivot 46.

The electric motor 8a of the power cylinder 8 has proximity switches 52, 53, 54 (FIG.
When 7, 58 is detected, the operation is automatically stopped. Proximity switches 52, 53, 54 are turntable 2
Are mounted side by side and dogs 56, 57, 58
Are mounted on the vertical movement beam 6 with their vertical positions shifted from each other.

The proximity switch 52 and the dog 56 stop the electric motor 8a when the boat pallet 7 is raised to the uppermost position (for example, about 500 mm above the ground) by extension of the power cylinder 8. The proximity switch 53 and the dog 57 are arranged such that the boat pallet 7 perpendicular to the wall surface 14a is at the lowest position (for example, about 4100 m below the ground).
m), the electric motor 8a is stopped when it is lowered. Further, the proximity switch 54 and the dog 58 are arranged so that the boat pallet 7 has a predetermined height (for example,
When the electric motor 8a descends to 0 mm above the ground, the electric motor 8a is stopped.

The support wheels 11 are mounted on the boat pallet 7
The main load mainly supports the unbalanced load when the boat B is placed on the turntable 2 and near the turning beams 4 and 4 of the turntable 2 outside the center of gravity of the unbalanced load.
% Or more, the turntable 2 is provided symmetrically with respect to an intermediate line between the swivel beams 4 and 4 and supported on an arc-shaped iron plate support rail 60 laid horizontally on the quay 14.
It rolls in accordance with the turn of. Support wheel 1
A metal brush 62 made of stainless steel or the like is provided on the outside of each of the first and second 11 and a scraper 63 made of rubber or the like is provided on the outside thereof. The metal brush 62 and the scraper 63 form an obstruction device, and move together with the support wheel 11 to remove foreign matter on the support rail 60.

The counter weight 12 is composed of a swivel beam 4,
4 is provided at the end of the turntable 2 on the opposite side. Reference numeral 65 denotes a shock-absorbing member provided on the front surface of the vertically moving beam 6, 66 denotes an operation panel, and 67 denotes a control panel.

The boat lifter device A having the above configuration
The operation of will be described. The solid line in FIG. 2 shows a state in which the boat pallet 7 is swung together with the turntable 2 to a position perpendicular to the wall surface 14a and is lowered, and is slightly submerged in the water. The trolley 37 is placed on the trolley 37 placed on the boat pallet 7 by itself.

Next, by pushing an up switch (not shown) provided on the operation panel 66 or the like, the power cylinder 8 is extended and the up-down beam 6 is raised. The boat pallet 7 rises to the uppermost position and the proximity switch 52
Detects the dog 56, the power cylinder 8 automatically stops. The worm reducer 8b prevents the vertically moving beam 6 from descending after the power cylinder 8 stops.

In the above state, by pressing a right turning switch (not shown) provided on the operation panel 66 or the like, the turning driving device 3 is operated and the turntable 2 is turned right in FIG. Let it. By turning the turntable 2, the boat pallet 7 arrives at the position above the recess, and the proximity switch 24 is set to the dog 26.
Is detected, the turning drive device 3 automatically stops.
The worm speed reducer 20 prevents the turntable 2 from freely turning after the turning drive device 3 stops.

When the boat pallet 7 stops at the position above the recess in this way, the power cylinder 8 is contracted by pressing a lowering switch (not shown) provided on the operation panel 66 or the like to move the boat vertically. The beam 6 is lowered.
When the proximity switch 54 detects the dog 58 when the vertically moving beam 6 descends, the power cylinder 8 automatically stops and stops the boat pallet 7 at the recessed position. In this state, the boat B is lowered from the boat pallet 7 along with the carriage 37 to the ground.

When the work of lifting the boat B on land is continued, the bogie 37 is placed on the boat pallet 7 and the power cylinder 8 is extended by pushing the lifting switch provided on the operation panel 66 or the like, thereby extending the boat pallet 7. Is raised to the uppermost position and automatically stopped by the action of the proximity switch 52, or while the boat pallet 7 is being lifted, a left-turn switch (not shown) provided on the operation panel 66 or the like is pushed to drive for turning. The turntable 2 is turned by the device 3 in the reverse direction. When the boat pallet 7 turns to a position perpendicular to the wall surface 14a and the proximity switch 23 detects the dog 25, the turning drive 3 automatically stops.

In the above state, the power cylinder 8 is contracted to lower the boat pallet 7 into the water. When the boat pallet 7 descends to the lowest position and the proximity switch 53 detects the dog 57, the power cylinder 8 automatically stops and stops the boat pallet 7 at that position.

Thereafter, the above operations are repeated to land the second and subsequent boats B on land. To lower the boat B on the ground to the surface of the water, put the boat B on the boat pallet 7 at the recess position.
Needless to say, put it on

In the above operation, since the supporting wheels 11 support the eccentric load of the boat B and the counterweights 12 equalize the load, the turntable 2 turns smoothly, and the life is extended, and the life is extended for many months. Withstand the use of. No licensing qualifications are required and the operability is good, so anyone can surely land the boat and drop it on the water. Moreover, since a hydraulic cylinder requiring a large amount of hydraulic oil is not used, there is no concern about environmental pollution due to leaked hydraulic oil. Moreover,
Since the power cylinder 8 is provided with the double stroke function, a long power cylinder 8 is not required and there is an advantage that the structure is simplified as a whole.

With a single operation of the switch, the boat pallet 7 at the recessed position is moved up, swivel and descent into the water, and the boat pallet 7 in the water is moved up, swivel and descent to reach the recessed position. Or a fully automatic operation control system. The boat pallet 7 can normally be stopped at an arbitrary position between the vertical position and the recessed position and at an arbitrary position between the highest position and the lowest position by operating a switch. The swivel angle and the ascending and descending heights of the boat pallet 7 are not limited to those described above, but may be variously changed in accordance with the installation location and the like.

[0037]

As described above, according to the first aspect of the present invention, there is provided a boat lifter device which operates smoothly, has good operability, has a relatively simple structure, and is durable. Can be.

[0038] In the boat lifter device according to the first aspect, when the cylinder is a power cylinder that expands and contracts a rod by operating a ball screw by an electric motor,
An environmentally friendly boat lifter device free of environmental pollution due to leakage of hydraulic oil can be provided.

In the boat lifter according to the second aspect, if the pair of left and right power cylinders is provided by connecting a rod to a synchronization member guided by a pair of swiveling beams, the pair of power cylinders are synchronized with each other. In addition, since the swing of the moving pulley due to the frictional resistance of the ball screw is prevented, the vertical beam can be moved up and down smoothly.

[Brief description of the drawings]

FIG. 1 is an external view showing an embodiment of a boat lifter device according to the present invention.

FIG. 2 is also a side view.

FIG. 3 is a sectional view showing a relationship between a fixed base and a turntable.

FIG. 4 is also a plan view.

FIG. 5 is a plan view showing a relationship between a swiveling beam, a vertically moving beam, and the like.

FIG. 6 is a diagram showing a relationship between a power cylinder, a roller chain, and the like.

FIG. 7 is a front view showing a relationship between a power cylinder, a synchronization member, and the like.

FIG. 8 is a diagram showing a relationship between a turntable, a power cylinder, a turning beam, and the like.

FIG. 9 is a diagram showing a relationship between a moving pulley, a cover, and the like.

FIG. 10 is a diagram showing a relationship between a support wheel, a support rail, and the like.

FIG. 11 is a cross-sectional view illustrating a relationship between a proximity switch of a fixed base and a dog of a turntable.

FIG. 12 is a plan view showing a relationship between a proximity switch of a fixed base and a dog of a vertically moving beam 6 and the like.

[Explanation of symbols]

Reference Signs List A boat lifter device B boat 1 fixed base 2 turntable 2a shaft 2b chain guide 3 turning drive 4 turning beam 4a guide 6 vertical motion beam 7 boat pallet 8 power cylinder 8a, 18 electric motor 8b, 20 worm reducer 8c Rod 9 Synchronous Member 11 Support Wheel 12 Counter Weight 14 Wharf 19 Turning Sprocket 21 Turning Roller Chain 23,24,52,53,54 Proximity Switch 25,26,56,57,58 Dog 32 Guide Roller 33 Side Roller 37 Bogie 44 Roller chain (cable) for vertical movement 48 Moving pulley 60 Support rail

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Mitsuru Shibuya 1300 Okayama, Niigata City, Niigata Prefecture Niigata Astec Co., Ltd. (72) Inventor Takeo Suzuki 1300 Okayama, Niigata City Niigata Prefecture Niigata Astec Co., Ltd. 72) Inventor Atsuo Miyashita 1300 Okayama, Niigata City, Niigata Prefecture Niigata Astec Co., Ltd.

Claims (3)

[Claims] 1. A fixed base fixed to a quay, a turntable horizontally and rotatably mounted on the fixed base, a turning drive device for turning the turntable with respect to the fixed base, and the turn A pair of left and right swiveling beams vertically installed on one side of the table, a pair of left and right up and down moving beams mounted on the above swiveling beam with a boat pallet at the lower end, and one end stopped on the turntable side A rope, such as a roller chain, with the other end fastened to the vertical beam side is wound around a movable pulley at the tip of the rod, and is provided on the turntable. And a support wheel provided at a part of the turn beam of the turntable and guided by a support rail on a quay. Footer device. 2. The boat lifter device according to claim 1, wherein the cylinder is a power cylinder that expands and contracts a rod by operating a ball screw by an electric motor. 3. The boat lifter device according to claim 2, wherein a pair of left and right power cylinders is provided by connecting a rod to a synchronization member guided by the pair of swiveling beams.