JPH021075B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an endless type winding machine that winds a wire rope once around a single sheave gear and is suitable for towing a gondola for lifting and lowering.

[Conventional technology]

In general, there are known winding machines of the drum type, in which the wire rope is wound around a drum several times, and the endless type, in which the wire rope is wound approximately once around a single sheave.

As mentioned above, unlike the drum type winder, the endless type winder only winds the wire rope around one sheave gear once, so the wire rope winding entrance and winding exit interfere with each other, causing the wire rope to It gets abraded. In order to avoid this, various methods have been devised in the past, such as placing the outlet of the wire rope at the top of the winder where it does not interfere with the inlet and letting the wire rope exit from the top of the winder to prevent interference, or The outlet is located at the bottom of the winder.

On the other hand, an endless type winder generates holding force through friction between the sheave gear and the wire rope, and this can be achieved by pressing the wire rope against the sheave gear in a distributed manner or by locally pressing it against the sheave gear. There is a way to press it. The method of distributing pressure on the wire rope is to arrange a chain around the outer circumference of the sheave gear, attach a lever to one end of this chain,
Furthermore, a suspension load is applied to this lever, and the suspension load changes the lever to urge the chain toward the sheave gear.

Furthermore, conventional sheave gears have a groove in the center of the outer circumference,
The wire rope is wound around this groove, and when the wire rope is wound around the sheave gear, the dust attached to the outer circumference of the wire rope comes out of the groove and is emitted outward, but this prevents this dust from entering the gear case. A dust ring is usually provided for this purpose.

Furthermore, in the conventional winding machine, a gear mechanism is interlocked with the output shaft of the motor via a coupling, and this gear mechanism drives the sheave gear in forward and reverse rotation.

[Problem that the invention seeks to solve]

However, the winding machine having the above structure has the following problems.

First, in order to prevent interference between the wire rope inlet and outlet, if the outlet is provided at the top or bottom, a complicated deflection fitting is required, the structure is complicated, installation is difficult, and replacement is difficult. Have difficulty.

Second, the method of locally pressing the wire rope to create friction between the sheave gear and the wire rope causes a large amount of wear and tear on the wire rope and is inferior in durability. Further, when applying a hanging load to press the wire rope in a distributed manner, for example, if a gondola or the like that generates the hanging load is on the ground, no hanging load is generated. For this reason, during the initial operation when no hanging load is generated, the wire rope may not operate smoothly due to low friction.

Thirdly, providing a dust ring or the like to prevent dust from entering the wire rope complicates the structure and requires maintenance.

Fourthly, if the output shaft is connected to the gear via a coupling, the number of parts will increase due to the coupling, the installation space will become large, the weight will be heavy, and the cost will increase.

SUMMARY OF THE INVENTION Therefore, an object of the present invention is to be able to prevent wire rope interference with a simple structure, to always apply a constant frictional force to the wire rope even when there is no hanging load, and to be able to discharge dust from the wire rope with a simple structure. To provide an endless type winder which does not require a coupling, has a simple and compact overall structure, and is inexpensive.

[Means for solving problems]

In order to achieve the above object, the configuration of the present invention is as follows:
A rope duct is provided close to the sheave gear, one end of a rope binder that presses the wire rope is always biased in one direction via a spring, an annular groove is formed along the circumferential direction at the outer peripheral end of the sheave gear, and It is characterized in that a gear is formed on the output shaft and directly connected to the gear mechanism.

[Effect]

Because the outlet end of the wire rope is inserted into the rope duct, it does not interfere with the wire rope on the entrance side, and since the spring is constantly pulling the rope binder, the wire rope is pressed against it even when there is no hanging load, and the wire rope is pushed along the annular groove. The dust on the wire rope is discharged, and the output shaft directly drives the gear mechanism.

〔Example〕

An example of implementation of the present invention will be described below with reference to the drawings.

Winding machine A has a motor 10 and gear cases 8a and 8b.
and an operation box 9.

The motor 10 is rotatably provided with an output shaft 11, a gear 11a is formed on the outer periphery of the output shaft 11, and a gear mechanism is directly driven via the gear 11a.

A gear mechanism is built into the gear cases 8a and 8b. That is, the motor gear 12 is connected to the gear 11a.
A main shaft 14 is connected to the drive shaft 13 of the motor gear 12 via a brake gear, and planetary gears 15 and 16 are rotatably engaged with the main shaft 14.

Bearings 17, 1 are located in the center of the gear case 8a.
A sheave gear 7 is rotatably provided via 8,
A gear 18 provided on the inner periphery of the sheave gear 7 meshes with the planetary gears 15 and 16, whereby the power of the output shaft 11 of the motor 10 is transmitted to the sheave gear 7 via the gear mechanism.

A rope annular groove 19 having a V-shaped cross section is formed at the center of the outer periphery of the sheave gear 7, and the wire rope 2 is wound approximately once around the rope annular groove 19.

Approximately once does not mean the entire circumference of the rope annular groove 19;
It is wound so that it touches three quarters of the outer circumference. However, it can also be used by wrapping it almost all around.

Two dust annular grooves 20, 20 are formed along the circumferential direction at the outer peripheral end of the sheave gear 7, in other words, at both ends of the annular rope groove 19, and the wire lobe 2
The dust adhering to the sheave gear 7 overflows from the annular rope groove 19 into the annular dust groove 20 during the rotation of the sheave gear 7, and is further discharged from the annular dust groove 20 as the sheave gear 7 rotates.

Therefore, even if the gear cases 8a, 8b are not provided with duct rings or the like, dust does not enter the gear cases 8a, 8b, and clogging, etc., is prevented.

The gear case 8a is provided with an inlet guide pipe 21 for the wire rope 2, and the wire rope 2 suspended from the upper fixing member is inserted into the guide pipe 21 and wound around the rope annular groove 19 of the sheave gear 7. There is.

Similarly, the gear case 8a is provided with an outlet side rope duct 1 for the wire rope 2 at a position close to the sheave gear 7, and the outlet end of the wire rope 2 coming out from the sheave gear 7 is inserted into the rope duct 1, and the other end is inserted into the rope duct 1. Extends to the outside in an unloaded state.

The rope duct 1 has an entrance part 1 that opens in a trumpet shape.
It is composed of a square pipe or a cylindrical pipe consisting of a middle curved part 1b and a lower vertical part 1c. The inlet part 1a opens at right angles to the upper part of the sheave gear 7, and the wire rope 2 coming out from the upper part of the sheave gear 7 enters the inlet part 1a, is deflected by hitting the inner circumferential side of the inlet part 1a, and is further deflected into the curved part 1b. It comes into contact with the upper surface of the inner circumference, is deflected along the curve, and is guided to the vertical portion 1c while being guided by the curve.

The outer end of the wire rope 2 is on the slack side, and there is no tension due to the load, so there is almost no wear on the rope duct 1, and there is little wear on the wire rope 2 itself.

The inlet side of the wire rope 2 is guided vertically to the sheave gear 7 by a guide pipe 21. On the other hand, the outlet side of the wire rope 2 passes through the inside of the rope duct 1, and the curved part 1b and the vertical part 1c of the rope duct 1 are located eccentrically from the sheave gear 7. Therefore, the inlet wire rope 2 and the outlet wire rope 2 entering from the vertical direction do not interfere, are not worn out by friction, and the wire rope 2 moves smoothly. With the rope duct 1, the wire ropes 2 will not interfere at the intersection even without the guide pipe 21.

A rope binder 5 is provided that runs along approximately half the circumference of the sheave gear 7. One end of the rope binder 5 is fixed to the gear case 8a via a pin 5a, and the other end is connected to the shaft 23 of the lever 6 via a link 22. As the lever 6 rotates in the direction of arrow Y, the rope binder 5 is pulled in the same direction, and the inner circumference of the rope binder 5 presses the wire rope 2 against the sheave gear 7 with a constant pressing force. Therefore, the desired friction is generated between the wire rope 2 and the sheave gear 7 due to this pressing force.
When the sheave gear 7 rotates forward or backward, the winding machine A moves up and down while the wire rope 2 rotates. Therefore, gondolas and the like suspended from the winder A move up and down in the same direction.

The lever 6 is rotatably supported by the central shaft 24,
A spring 3 is connected to the lower part of the lever 6 via a pin 25, and a load such as a gondola or other suspended member is also detachably attached to a support shaft 26.

One end of the spring 3 is connected via 27 to a spring adjustment member 4 consisting of a bolt, nut, etc., and by adjusting the length and stroke of the bolt, etc., the spring load of the spring 3 is adjusted to correspond to this spring load. The pressing force of the rope binder 5, in other words, generates friction between the wire rope 2 and the sheave gear 7.

The spring 3 constantly pulls the lever 6 in the
Since the rope binder 5 is also pulled in the Y direction, a certain amount of friction is always generated between the wire rope 2 and the sheave gear 7.

For this reason, even when a gondola or the like is suspended from the shaft 26, the lever 6 further rotates in the Y direction and generates more friction, but if no load is applied to the shaft 26, for example, the winding machine A Even when the load such as a gondola is placed on the ground, a minimum amount of friction is generated by the spring 3, so the wire rope 2 is bitten by the sheave gear 7 even in the initial stage when the winder A is raised. It works well.

The rope binder 5 is composed of a chain roller, a belt, etc. of arbitrary length, and the inner periphery of these members presses the wire rope 2 in a distributed manner.

Since the operation box 9 is integrally assembled to the lower part of the gear cases 8a and 8b and incorporates an electrical system, the entire winding device is housed in one place, making it compact and improving operability.

〔Effect of the invention〕

According to the present invention, the following effects are achieved.

Since an annular groove for dust is formed on the outer periphery of the sheave gear, dust adhering to the wire rope is guided to the outside along this groove and discharged, eliminating the need for dust-proof members such as duct rings, reducing the number of parts, and reducing the number of parts. The structure becomes more compact.

Since the rope duct is provided close to the sheave gear, the inlet and outlet sides of the wire rope do not interfere, and therefore the wire rope does not wear, improving its durability. Moreover, since the rope duct is an integral pipe, it has a compact structure, requires less installation space, and can be easily replaced if damaged.

The rope binder is always pulled in a constant direction by a spring, and a constant pressing force is always generated on the rope binder. Therefore, even in the initial state where no hanging load is applied to the winding machine, the wire rope bites into the sheave gear and the initial operation can start smoothly. Moreover, by adjusting the tension of the spring, it is possible to generate friction between the wire rope and the sheave gear in accordance with the hanging load.

Since a gear is formed on the output shaft and the gear mechanism is directly connected through this gear, a coupling member such as a coupling member is not required, and the structure is accordingly simple, and the space can be reduced and the device can be made compact.

[Brief explanation of drawings]

1 is a longitudinal sectional front view of a main part of a winding machine according to an embodiment of the present invention, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a schematic longitudinal sectional side view of FIG. 1. 1... Rope duct, 2... Wire rope, 3
...Spring, 5...Rope binder, 7...
...Sheave gear, 19...Annular groove for rope, 20...
...An annular groove for dust.

Claims (1)

[Claims] 1. In a winding machine in which a rope annular groove is formed on the outer periphery of a freely rotatable sheave gear, and a wire rope is wound around this groove, An annular groove for dust is formed along the sheave gear, and a rope duct is provided adjacent to the sheave gear, and one end of the wire rope is guided outward through the rope duct, and one end of the wire rope is fixed along the outer periphery of the sheave gear. A winder that is always biased in one direction via a spring at the other end of the rope binder. 2. The winder according to claim 1, wherein the annular groove for dust is formed on both sides of the central annular groove for rope. 3. The winding machine according to claim 1, wherein the rope duct is a pipe whose inlet end is formed into a flap shape and opens perpendicularly to the sheave gear, and a part of which is connected to the inlet end is curved. 4. The winder according to claim 1, wherein the no-load side end of the rope wire is inserted into the rope duct. 5. The winder according to claim 1, wherein one end of the rope binder is held by one end of a swingable link, and a spring is connected to the other end of this link. 6. The winding machine according to claim 5, wherein a spring is connected to the other end of the link and a hanging load is applied at the same time. 7. The winding machine according to claim 1 or 5, wherein the tension of the spring can be adjusted from the outside. 8. The winding machine according to claim 1, wherein a gear is formed on the outer periphery of the output shaft of the motor and is rotationally driven.