JPH09183593A - Winch - Google Patents

Abstract

PROBLEM TO BE SOLVED: To embody a winch in a small construction and remove effectively the heat emitted by a motor. SOLUTION: A laminated core 16 on which a winding 20 is formed, is installed on the periphery of a cylinder 8, and a stator of a motor is formed. The stator is installed on the inside of the circumferential surface of a cylinder 4, and on the inner surface another cylinder 14 is put in tight attachment. At the inside surface of this cylinder 14, a number of grooves parallel with the stretching direction of the cylinder 4 are formed at a constant spacing in the circumferential direction and are filled with an aluminum rod or copper rod, not illustrated, so that a cage-shaped winding is accomplished. The cylinder 4 and the one 14 equipped with cage-shaped winding constitute a rotor, and a three-phase induction motor is configured with the above stator and this rotor. A flange 22 is installed at each end of the peripheral surface of the cylinder 4, and the peripheral surface and the flanges 22 constitute a drum 6 for winding a wire 24 thereon and paying off.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to winches.

[0002]

2. Description of the Related Art A conventional winch has a structure in which a winding cylinder is rotated by an electric motor to wind wires, ropes, chains and the like onto the winding cylinder.

[0003]

However, in the conventional winch, since the winding drum and the electric motor are separately constructed, it is difficult to further reduce the size. Also, the heat generated by the electric motor cannot be removed efficiently, so when the load is large, the electric motor will become hot and the magnetic force will weaken, and the hoisting force will decrease, or the high temperature will cause a failure or shorten the life. There was a problem. Therefore, the object of the present invention is
Another object of the present invention is to provide a winch capable of efficiently removing heat generated by an electric motor.

[0004]

In order to achieve the above object, the present invention provides a first tubular body having a circular cross section and a second tubular body having a circular cross section inserted inside the first tubular body. Supporting means for rotatably supporting the first tubular body with respect to the second tubular body around a center line parallel to the extending direction of the first tubular body, and the second tubular body And a stator of the electric motor fixed to the second cylinder outside the casing, and a gap is formed between the stator and the stator to face the stator and to include the first cylinder. And a winding drum that is formed on the outer peripheral portion of the first cylindrical body and that enables winding and unwinding of the wire.

According to the present invention, the stator includes an iron core and a winding attached to the iron core, the rotor is at least partially formed of a conductive material, and is guided by the rotor and the stator. It is characterized in that an electric motor is formed. The present invention is also characterized in that the induction motor is a three-phase induction motor. The present invention is also characterized in that both the rotor and the stator include an iron core and a winding attached to the iron core, and the rotor and the stator form a DC motor. To do. The present invention also provides
Any one of the rotor and the stator includes an iron core and a winding attached to the iron core, and the other rotor or the stator not including the iron core and the winding is permanent. A direct current electric motor is formed by including the magnet and the rotor and the stator.

The present invention is also characterized in that the winding cylinder is composed of flanges formed at both ends of the first cylindrical body and a peripheral surface connecting the flanges.
The present invention is also characterized in that a rod is inserted through the second cylinder, and the second cylinder is fixed to the rod. The present invention also provides a rod that is coupled to the second tubular body in a longitudinal direction thereof and is not rotatable with respect to the second tubular body, and the second tubular body is moved along the rod. And a driving means for driving.

In the present invention, the first cylindrical body is rotatably supported by the supporting means, and the stator is fixed to the outer side of the second cylindrical body inserted inside the first cylindrical body. There is. Further, the rotor is configured to include a first tubular body, which faces the stator with a gap formed between the rotor and the stator. Therefore, when the magnetic force acts between the rotor and the stator, the first cylindrical body forming the rotor rotates around the second cylindrical body and is formed on the outer peripheral portion of the first cylindrical body. The winding drum winds and unwinds the wire.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described. 1 is a sectional side view showing a winch of the first embodiment, and FIG. 2 is a perspective view of the same. As shown in FIGS. 1 and 2, the winch 2 includes a winding cylinder 6 that forms a rotor of an electric motor formed by including a cylindrical body 4 having a circular cross section.
The stator 10 of the electric motor is formed by including a tubular body 8 having a circular cross section that is inserted into the tubular body 4. The cylindrical body 4 (corresponding to the first cylindrical body) has the bearings 12 interposed inside the both ends of the cylindrical body 4 to extend the cylindrical body 4 with respect to the cylindrical body 8 (corresponding to the second cylindrical body). It is rotatably supported around a center line parallel to the existing direction. In order to form a three-phase induction motor, the cylindrical body 14 is formed on the inner surface of the peripheral surface 402 of the cylindrical body 4.
Are closely attached. A large number of grooves parallel to the extending direction of the cylindrical body 4 are formed on the inner peripheral surface of the cylindrical body 14 at regular intervals in the circumferential direction, and aluminum rods or copper rods (not shown) are fitted into these grooves. A basket-shaped winding is formed. Cylinder 4,
And the rotor of the electric motor is formed by the cylinder body 14 in which the cage winding is formed.

On the outer peripheral surface of the cylindrical body 8, facing the cylindrical body 14,
A large number of laminated cores 16 are arranged at regular intervals in the circumferential direction of the tubular body 8 with a predetermined gap being formed between the inner surface of the tubular body 14 and the inner surface. The ends of the laminated cores 16 on the cylinder body 8 side are connected to each other by a laminated core 18, and the laminated cores 18 are attached and fixed to the outer surface of the cylinder 8. A winding wire 20 is wound around each laminated core 16. The laminated iron cores 16 and 18 and the windings 20 form a stator of the electric motor. The laminated iron cores 16 and 18 may be formed by punching a plate-shaped material by press working in a state where the respective portions of the laminated iron cores 16 and 18 are integrated, and laminating the laminated iron cores 16 and 18 to form an integrated laminated iron core 16. Of course it is possible.
The flanges 22 are provided on both ends of the peripheral surface 402 of the tubular body 4.
The flange 22 and the peripheral surface 402 constitute the winding drum 6 for winding and unwinding the wire 24.

A rod 26 having a circular cross section for supporting the winch 2 is inserted into the cylindrical body 8, and a pin 30 is inserted into a hole formed in the rod 26 through holes formed at both ends of the cylindrical body 8. By doing so, the cylindrical body 8 is fixed to the rod 26 in a non-rotatable manner.

When a three-phase AC voltage is applied to the winding 20 through the cable 32 with respect to the winch 2 thus constructed, an electromotive force is induced in the cylindrical body 14 by the magnetic field generated at the laminated core 16. Current flows, laminated core 1
Due to the magnetic force acting between 6 and the tubular body 14, the tubular body 4, and thus the winding drum 6, is rotationally driven in the direction of arrow A, for example. As a result, the wire 24 is wound around the winding drum 6. Further, the winding cylinder 6 can be reversely rotated by switching the phase of the three-phase AC voltage applied to the winding 20 through the cable 32 by a predetermined switching device (not shown), and in that case, the wire 24 is wound. It will be extended from the body 6.

In the winch 2, since the winding cylinder 6 is constituted by the rotor of the electric motor itself, the electric motor and the winding cylinder 6 are integrated, and the winch 2 can be easily miniaturized. Further, since the stator of the electric motor is formed by the tubular body 8 and the rod 26 for fixing the tubular body 8 is inserted into the tubular body 8, the heat generated in the electric motor unit is
Not only the heat is dissipated from the outside of the cylindrical body 4, but also the heat is transmitted from the inner surface side of the cylindrical body 8 to the rod 26 to dissipate the heat.

Therefore, it is possible to remove the generated heat extremely efficiently as compared with the conventional electric motor. Therefore, it is possible to prevent a decrease in driving force due to a decrease in magnetic field strength, a failure, or a shortened life. And
Since the electric motor and the winding drum 6 are integrated, the winch 2 can be designed in various ways. for that reason,
It is possible to diversify the installation method and expand the applications. Therefore, for example, it is possible to design a beautiful design and install the winch in a place where the winch can be seen without being hidden.

Next, a second embodiment will be described. FIG.
As shown in FIG. 5, the winch 52 of the second embodiment is formed by connecting winches 54 and 56 having basically the same structure as the winch 2 described above. That is, two winches 5
Nos. 4 and 56 are arranged such that the center lines of the inner tubular bodies 8 are aligned and the opposite ends are in contact with each other. And
Rods 26 are inserted into the insides of both cylinders 8, and each cylinder 8 is fixed to the rods 26 in the same manner as in the above embodiment. The opposing flanges 22 formed on each cylinder 4 are connected by a plurality of rods 34 arranged at intervals in the circumferential direction.

In the winch 52, the rotational force of the winch 54 is reinforced by the winch 56, and the total rotational force is twice as large as that of the single case. Therefore, the wire 24 can be strongly wound up.

Next, a third embodiment will be described. FIG.
As shown in side view, the winch 58 comprises drive means for moving along a rod 27 for supporting the winch 58. That is, the driving means 36 is vertically arranged at both ends of the inner cylindrical body 8'corresponding to the cylindrical body 8.
Are arranged. The drive means 36 is a small motor,
It is constituted by a friction type roller which comes into contact with the rod 27 and is rotated by the motor. Also, the cylinder 8 '
Is not fixed to the rod 27 by the pin 30 as in the case of the winch of FIG. 1 and the barrel 8 ′ is movable relative to the rod 27 in the longitudinal direction and is non-rotatable by a conventionally known structure. Is engaged with.

Therefore, in this winch 58, the winch 58 can be freely moved along the rod 27 in the direction of the arrow B or the arrow C by rotating the motor of the drive means 36, and the winch 58 can be moved. Two
7 can be installed at any position.

As a method of driving the tubular body 8 ', in addition to using the driving means 36 as described above, for example, a wire is endlessly wound in advance in the moving range of the tubular body 8', and the tubular body 8'is driven. A method in which this wire is connected to'and the tubular body 8'is pulled by the wire in the directions of arrows B and C may be used, and various conventionally known driving methods can be applied.

In the embodiment, the case where the electric motor integrated with the winch is a three-phase induction motor has been described as an example.
Of course, the electric motor may be a single-phase induction motor or a DC electric motor. When using a DC motor,
As is well known, the rotor and the stator 10 that form the winding cylinder 6 may each be composed of an iron core and a winding wound around the iron core, or one of them may be composed of a permanent magnet. At that time, if the rotor is composed of an iron core and windings,
Similar to the conventional DC motor, the current flowing through the winding may be switched by the commutator and the brush according to the rotation angle of the rotor. When the rotor is composed of permanent magnets,
An appropriate control device may be used to switch the current flowing through the winding of the stator according to the rotation angle of the rotor. Further, in the embodiment, the case where the cylindrical bodies 8 and 8 ′ are supported by the rods 26 and 27 has been described, but the winches 2, 52, 54, 56 and 58 are provided.
The supporting structure of the cylindrical bodies 8 and 8'can be changed as appropriate according to the installation location of. Further, attachment of various types of brakes and clutch mechanisms such as mechanical type and electric type is optional.

[0020]

As described above, the winch of the present invention includes the first tubular body having a circular cross section, the second tubular body having a circular cross section inserted inside the first tubular body, and the second tubular body. Supporting means for supporting the first tubular body with respect to the second tubular body so as to be rotatable around a center line parallel to the extending direction of the first tubular body, and to the outside of the second tubular body. An electric motor formed to include a gap between the stator of the electric motor fixed to the second cylindrical body and the stator and to face the stator and to include the first cylindrical body. And a winding cylinder that is formed on the outer peripheral portion of the first tubular body and that enables winding and unwinding of the wire.

Therefore, in the winch of the present invention, since the winding cylinder is formed by the rotor of the electric motor itself, the electric motor and the winding cylinder are integrated, and the miniaturization of the winch can be realized very easily. Further, since the stator of the electric motor is attached to the second cylinder and a rod or the like for fixing the second cylinder can be inserted into the second cylinder, the heat generated by the electric motor is Not only is the heat dissipated from the outside of the cylinder
The heat is also transmitted from the inner surface side of the second cylindrical body to the rod or the like and radiated. Therefore, it is possible to remove heat generated with extremely high efficiency as compared with the conventional electric motor, and it is possible to prevent a decrease in driving force due to a decrease in magnetic field strength, a failure, or a shortened life. Further, since the electric motor and the winding drum are integrated into one unit, the winch can be designed in various ways, so that the installation method can be diversified and the applications can be expanded. Therefore, for example, it is possible to design a beautiful design and install the winch in a place where the winch can be seen without being hidden.

[Brief description of the drawings]

FIG. 1 is a side view showing a first embodiment of the present invention.

FIG. 2 is a perspective view showing the winch of FIG.

FIG. 3 is a side view showing a second embodiment of the present invention.

FIG. 4 is a side view showing a third embodiment of the present invention.

[Explanation of symbols]

 2, 52, 54, 56, 58 Winch 4, 8, 8 ', 14 Cylindrical body 6 Winding body 10 Stator 16, 18 Laminated iron core 20 Winding 22 Flange 24 Wire 26, 27 Rod 34 Connecting rod 36 Driving means

Claims (8)

[Claims] 1. A first tubular body having a circular cross section, a second tubular body having a circular cross section inserted inside the first tubular body, and the first tubular body being a second tubular body. On the other hand, a supporting unit that rotatably supports a center line parallel to the extending direction of the first tubular body, and is fixed to the second tubular body outside the second tubular body. A stator of the electric motor, a rotor of the electric motor formed to include a gap between the stator and the stator, the rotor of the electric motor including the first cylinder, and the first cylinder. A winch, comprising: a winding cylinder formed on an outer peripheral portion of the wire and capable of winding and unwinding a wire. 2. The stator includes an iron core and a winding attached to the iron core, the rotor is at least partially formed of a conductive material, and the rotor and the stator form an induction motor. The winch according to claim 1, which is provided. 3. The winch according to claim 2, wherein the induction motor is a three-phase induction motor. 4. The rotor according to claim 1, wherein both the rotor and the stator include an iron core and a winding attached to the iron core, and the rotor and the stator form a DC motor. winch. 5. One of the rotor and the stator includes an iron core and a winding attached to the iron core,
The winch according to claim 1, wherein the other rotor or stator not including the iron core and the winding includes a permanent magnet, and a DC motor is formed by the rotor and the stator. 6. The winch according to claim 1, wherein the winding cylinder includes a flange formed at both ends of the first tubular body and a peripheral surface connecting the flanges. 7. The winch according to claim 1, wherein a rod is inserted into the second cylinder, and the second cylinder is fixed to the rod. 8. A rod movably connected to the second cylinder in the longitudinal direction thereof and non-rotatably connected to the second cylinder, and the second cylinder moves along the rod. The winch according to claim 1, further comprising drive means for causing the winch.