JPH07245908A - Rotating machine coupling - Google Patents

Abstract

(57) [Summary] [PROBLEMS] An object of the present invention is to provide a coupling for a rotating machine, which can accurately balance the weight of an unbalanced amount and can easily perform the balancing work. According to the present invention, in a coupling that connects a motor that generates a rotational force and a speed reducer that converts the rotational speed of the motor to a desired speed, an outer peripheral surface of the coupling 13 is provided. A weight (20) for balancing the unbalanced amount of the coupling is attached to a groove (19) continuously provided along the coupling (19) to balance the coupling.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coupling used in a rotating machine such as a motor, and more particularly to improvement in balancing.

[0002]

2. Description of the Related Art In general, the couplings of rotary machines range from those for small rotary machines to those for large rotary machines. Here, in particular, relatively large motors for hoisting machines for elevators, etc. The coupling used in the rotating machine will be described.

3 and 4 show a schematic construction of an elevator hoisting machine. In the figures, a hoisting machine 1 comprises a hoisting motor 2 and an input shaft of a speed reducer 3. The hoisting motor 2 is provided with a coupling 4 for communicating with the rotating shaft of the hoisting motor 2 and a hoisting sheave 5 attached to the output shaft of the speed reducer 3. A rope 6 is hung on the hoisting sheave 5, a car 7 for passengers is provided at one end of the rope 6, and a car 7 is provided at the other end.
A counterweight 8 is provided to balance with.

In the elevator constructed as described above, the hoisting sheave 5 is rotated by the rotational drive of the hoisting motor 2 through the speed reducer 3, and the rotor is accompanied by this rotation. 6
Is driven by friction and the car 7 is moved up and down.

The coupling 4 attached to the rotary shaft of the hoisting motor 2 will be described with reference to FIGS. 5 and 6. In the figure, the coupling 4 is divided into a motor-side coupling 9 and a reduction gear-side coupling 10. Each of the couplings 9 and 10 is connected by a bolt 11 in the circumferential direction. They are fastened at regular intervals and integrally connected. Generally, the coupling 4 has a high rotational speed, and if the residual unbalance is large, it may be a vibrating force and cause vibration. Therefore, it is necessary to balance the bolts, as shown in FIGS. 5 and 6, for attaching the motor side coupling 9 and the reducer side coupling 10 to each other.
A flat seat 12 is added to 11 as a weight for the unbalanced amount for balancing.

[0006]

However, even when balancing is performed by such a method, since the additional adjustment of the weight for the unbalance amount is limited to the position of the bolt 11, the optimum unbalance position is the optimum unbalance position. It was not possible to add weight to the position. Further, since the flat seats 12 are used in an overlapping manner, there is a limit in the amount of addition, and there is a problem that it is difficult to perform accurate balance.

Therefore, an object of the present invention is to provide a coupling for a rotating machine, which can accurately balance the weights corresponding to the unbalanced amount and can easily perform the balancing work.

[0008]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a motor for generating a rotational force, and a motor for this.
In a coupling that connects a speed reducer that converts the rotational speed of a turbine to a desired speed, a groove is continuously provided along the outer peripheral surface of the coupling, and a balance of the unbalanced amount of the coupling is provided in this groove. Provide a rotating machine coupling adapted to attach a weight for taking. Moreover,
The groove has a groove that is wider than the opening of the groove on the center side of the coupling shaft.The head of the bolt is built in this wide groove as a weight, and this bolt is fixed to the groove with a nut through a seat. Provide a rotating machine coupling adapted to balance the coupling.

[0009]

According to the present invention having the above-mentioned structure, in the coupling of the rotating machine for connecting the motor for generating the rotational force and the speed reducer for converting the rotational speed of the motor to a desired speed, A weight for balancing the unbalanced amount of the coupling is attached to a groove continuously provided along the outer peripheral surface of the coupling to balance the coupling.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a sectional view and a side view of a motor side coupling 14 of a coupling 13 of the present invention.
A groove 16 having an L-shaped cross section is formed at the end portion of the mating surface with the reduction gear side coupling 15 along the outer circumference of the tar side coupling 14. Further, there are four holes 17 for fastening with the speed reducer side coupling 15 at intervals of 90 degrees in the circumferential direction, and similarly, the speed reducer side coupling 15 also has motors at intervals of 90 degrees in the circumferential direction. There are four holes for fastening with the tar side coupling 14. As shown in FIG. 2, the reduction gear side coupling 15 is provided with a groove 18 having an L-shaped cross section at the end of the mating surface with the coupling 14 along the outer circumference, as in the motor side coupling 14. It is formed. When the couplings 14 and 15 are connected with each other by fastening holes by bolting, the L-shaped groove 1
6 and 18 are butted against each other to form a groove 19 having a substantially T-shaped cross section. FIG. 2 shows a groove 19 having a substantially T-shaped cross section.
The figure shows the balance weight 20 attached. The weight 20 includes a bolt 21, a nut 22, seats 23, 24,
It is composed of 25. The seat 23 has one surface machined to match the curvatures of the grooves 16 and 18, and the other surface machined horizontally. The seat 24 has one surface machined so as to match the curvature of the outer diameters of the couplings 14 and 15, and the other surface processed horizontally. The seat 25 is an ordinary flat seat whose both sides are processed horizontally. The bolt 21 and the nut 22 are a hexagon bolt and a hexagon nut, respectively, so that they can be strongly tightened.

In the coupling 13 thus constructed, the motor-side coupling 14 and the reduction gear-side coupling 15 are connected through the fastening holes provided in the respective couplings 14 and 15. To be done. A groove 19 having a substantially T-shaped cross section is formed on the outer peripheral surface of the coupled and integrated coupling 13.
Is formed on the axial center side of the coupling 13.
Has a groove wider than the opening of the
Part of 20 is installed. When performing balancing with the weight 20, the weight 20 is attached to the groove 19 at a position 180 ° symmetrical to the position where the residual unbalance amount of the coupling 13 is present. Specifically, the head of the bolt 21 is loosely inserted into the wide groove portion described above, and the nut 22, the seat 23, 24, 25 is inserted into the bolt 21.
It is possible to adjust the balance by adding or removing the flat seat 25 depending on the balance amount. Also, the groove 19 is for each motor side coupling 14
Also, since it is formed by the grooves 16 and 18 provided at the outer peripheral end of the mating surface of the speed reducer-side coupling 15, it is formed continuously in the circumferential direction, and therefore the weight 20 is placed at any position on the outer peripheral circle. It can be moved and fixed. Weight 20
When the is moved, the nut 22 is loosened so that it is not completely pulled out from the bolt 21, and the loosened state is moved on the circumference. Further, when the amount of unbalance of the coupling 13 is large, a plurality of seats 25 may be stacked and used, or a plurality of weights 20 may be attached to the groove 19.

As described above, according to this embodiment, the weight 20
The mounting position is not limited to the position of the bolt connecting the motor side coupling 14 and the reduction gear side coupling 15, but can be mounted at any position in the circumferential direction. Also,
The mounting position of the weight 20 is the coupling 13 compared to the conventional position.
The distance from the center of the can be set large, and the adjustment can be made with a small amount of weight. Moreover, in the traditional way.
What was adjusted on the axial side of the coupling,
Since it can be performed on the upper side surface in the circumferential direction, balancing can be performed without interfering with peripheral devices, and improvement in workability can be expected. Further, grooves 16 and 18 are provided on the motor side coupling 14 and the reduction gear side coupling 15, respectively,
Since the grooves 16 and 18 are abutted with each other to form the substantially T-shaped groove 19, the weight 20 can be easily attached and detached.

[0013]

As described above, according to the present invention, it is possible to provide a coupling for a rotating machine, which can accurately balance the weight of the unbalanced amount and can easily perform the balancing work. it can.

[Brief description of drawings]

FIG. 1 is a sectional view and a side view showing a configuration of a coupling of the present invention.

FIG. 2 is a cross-sectional view showing a structure for attaching a weight of the coupling of the present invention.

FIG. 3 is a top view showing a configuration of an elevator hoisting machine.

FIG. 4 is a side view showing a schematic configuration of an elevator.

FIG. 5 is a front view showing the configuration of a conventional coupling.

FIG. 6 is a side sectional view showing the structure of a conventional coupling.

[Explanation of symbols]

2 ... Hoisting motor, 3 ... Reducer, 4, 13 ... Coupling, 14 ... Motor side coupling, 15 ... Reducer side coupling, 16, 18 ... Groove, 19 ... Groove, 20 … Weight, 21… Bolt, 22… Nut, 23, 24, 25… Seat.

Claims (3)

[Claims] 1. A motor for generating a rotational force, and this motor
In a coupling of a rotating machine that connects a speed reducer for converting the rotation speed of a target to a desired speed, a groove is continuously provided along the outer peripheral surface of the coupling, and the groove has an unbalanced amount. A coupling for a rotating machine, characterized in that a weight is attached to balance the above. 2. The coupling for a rotating machine according to claim 1, wherein the groove has a groove wider than an opening of the groove on a coupling shaft center side, and the head of the bolt serves as a weight in the wide groove. A coupling for a rotating machine, characterized in that the bolt is fixed to the groove by a nut via a seat to balance the coupling. 3. The coupling for a rotating machine according to claim 2, wherein the coupling is formed by abutting and coupling the motor-side coupling and the speed reducer-side coupling, and the groove is formed in each coupling. A coupling for a rotating machine, comprising a groove for forming a groove.