JP6428499B2 - Elevator sheave - Google Patents

Description

The present invention relates to a sheave used in an elevator.

In the elevator, a rope is provided around the outer periphery of the sheave, and a rope is wound around the rope. If the rope groove wears due to friction with the rope, it is necessary to modify the rope groove and replace the rope. In order to make correction processing and replacement easy, only the sheave groove portion of the sheave is made detachable. In such a sheave, a sheave body and a plurality of divided pieces attached to the outer periphery of the sheave body are provided, and a sheave groove is provided in the divided piece. The sheave body is provided with a boss to be attached to the shaft, a main body cylindrical member to which the split piece is attached, and a plurality of support members that radiate from the boss to the main body cylindrical member. When the rope groove is worn, the split piece is removed from the sheave body and the rope groove is modified or the split piece is replaced. (For example, see Patent Document 1)

International Publication No. 2002/064483

By the way, in such a sheave, uneven wear in which the progress of wear of the rope is different depending on the position in the circumferential direction. The portion of the rope in which the main body cylindrical member is supported by the support member is easily worn. On the other hand, the ropes in the middle part of the support members adjacent to each other are not easily worn. This is because when the load from the rope is applied to the sheave, the main body cylindrical member and the split piece are easily bent and deformed at the intermediate portion, and are not easily worn. This uneven wear causes vibrations in the car. For this reason, when the wear of the portion supported by the support member progresses, even if the wear of the intermediate portion does not progress, correction work is necessary and maintenance work is required. In addition, even if only a part is worn, it is necessary to replace one divided piece, resulting in waste.

The present invention has been made to solve such problems, and an object of the present invention is to provide an elevator sheave that can facilitate maintenance accompanying wear of a sheave groove of a sheave and can reduce the replacement of parts.

An elevator sheave according to the present invention includes a boss attached to a shaft, a ring member formed annularly on the outer periphery of the boss so as to face the boss, and a plurality of bosses spaced from each other in the circumferential direction of the boss. A support member provided to support the ring member, a rope groove member having a shape along the outer periphery of the ring member and having a rope groove provided in the circumferential direction on the outer periphery, and a first phase along the outer periphery of the ring member Or a fixing means for fixing the rope groove member to the ring member in either of the second phase, and in the first phase, the portion of the rope groove member facing the support member in the radial direction is the second phase. It does not face the support member in the radial direction in phase.

According to the present invention, the rope groove member is fixed to the ring member by the fixing means in the first phase, and used as a sheave. Next, the rope groove member is fixed to the ring member by the fixing means in the second phase and used as a rope wheel. As a result, the reed groove in the portion of the reed groove member that faces the support member in the radial direction, which is easily worn in the first phase, does not face the support member in the second direction in the radial direction, and thus is less likely to be worn. . In this way, uneven wear of the leash groove member is suppressed, so that maintenance accompanying the wear of the leash groove can be facilitated and the replacement of parts can be reduced.

ADVANTAGE OF THE INVENTION According to this invention, the maintenance of the sheave groove of a sheave becomes easy, and the sheave for elevators which can reduce replacement | exchange of components is obtained.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the whole elevator apparatus structure using the elevator sheave by Embodiment 1 of this invention. It is a front view which shows the whole structure of the elevator sheave of FIG. FIG. 3 is a cross-sectional view of an elevator sheave as seen in the direction of arrows II-II shown in FIG. 2. It is a front view which shows the sheave main body of FIG. It is a front view which shows the rope groove member of FIG. It is explanatory drawing which shows the state which rotates the rope groove member of FIG. 2 with respect to the ring member. It is explanatory drawing which shows the state after rotating the rope groove member of FIG. 6 with respect to the ring member. It is explanatory drawing which shows the state which fixed the rope groove member of FIG. 7 with respect to the ring member.

Embodiment 1 FIG.
An embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a diagram showing an overall configuration of an elevator apparatus using an elevator sheave according to Embodiment 1 of the present invention. FIG. 2 is a front view showing an overall configuration of the elevator sheave in FIG. 1 in which the rope groove member is fixed to the ring member in the first phase along the outer periphery of the ring member. FIG. 3 is a sectional view of the elevator sheave as seen in the direction of arrows II-II shown in FIG. FIG. 4 is a front view showing the sheave body of FIG. FIG. 5 is a front view showing the rope groove member of FIG. FIG. 6 is an explanatory view showing a preparation state in which the rope groove member of FIG. 2 is rotated with respect to the ring member. FIG. 7 is an explanatory view showing a state after the rope groove member of FIG. 6 is rotated with respect to the ring member. FIG. 8 is an explanatory view showing a state in which the rope groove member is fixed to the ring member in the second phase along the outer periphery of the ring member of FIG.

In FIG. 1, a car 2 and a counterweight 3 are provided in a hoistway 1 so as to be able to go up and down. A machine room 4 in which a hoisting machine 5 is installed is provided above the hoistway 1. The hoisting machine 5 is rotatably provided with a sheave 6. Next to the sheave 6 is a deflector 7. The rope 8 is wound around the sheave 6 and the baffle 7 and then lowered from the hole in the floor of the machine room 4 to the hoistway 1, and the car 2 and the counterweight 3 are connected to both ends.

2 to 8, the sheave 6 includes a sheave body 11 attached to the shaft 10 that is rotated, a sheave groove member 12 provided on the outer periphery of the sheave body 11, and the sheave groove member 12 in the sheave body 11. The first member 13, the second member 14, the filling member 15, and the filling member 16 are provided as fixing means for fixing. The sheave main body 11 includes a boss 17, a support member 18, and a ring member 20. The boss 17 has an annular shape, and the shaft 10 is passed through and fixed to the hole 17a at the center. Eight support members 18 are radially provided on the outer periphery of the boss 17 so as to be spaced apart from each other in the circumferential direction.

An annular member 20 formed in an annular shape concentrically with the boss 17 is provided on the outer periphery of the boss 17. The front end side of the support member 18 is attached to the inner peripheral portion of the ring member 20, and the ring member 20 is supported by the support member 18. On the inner peripheral side of the ring member 20, eight holes 22 surrounded by the ring member 20, the boss 17, and the support member 18 are opened. The rope groove member 12 is formed in an annular shape along the outer periphery of the ring member 20 concentrically with the ring member 20, and is disposed along the outer periphery of the ring member 20. The rope groove member 12 and the ring member 20 can rotate relatively concentrically. A rope groove 12a is provided in the circumferential direction on the outer periphery of the rope groove member 12, and a rope is wound around the rope groove 12a. In FIG. 3, the rope is omitted.

When operating the hoisting machine 5, the first member 13, the second member 14, the filling member 15, and the filling member 16 are arranged so that the rope groove member 12 and the ring member 20 do not rotate relative to each other in the circumferential direction. It is fixed by. The 1st member 13 is provided in the outer peripheral part of the ring member 20 so that it may become convex toward the leash groove member 12. As shown in FIG. Four first members 13 are provided at equal intervals on the outer periphery of the ring member 20. The leading end of the first member 13 on the side of the rope groove member 12 is in contact with the inner peripheral surface of the rope groove member 12.

The 2nd member 14 is provided in the inner peripheral part of the rope member 12 so that it may become convex toward the ring member 20. The second member 14 is provided at four locations at equal intervals on the inner peripheral portion of the rope groove member 12. The tip of the second member 14 on the ring member 20 side is in contact with the outer peripheral surface of the ring member 20.

The first member 13 and the second member 14 are alternately arranged on one circumference between the rope member 12 and the ring member 20. As shown in FIGS. 2 and 8, a filling member 15 and a filling member 16 are provided on the same circumference as the first member 13 and the second member 14. The first member 13, the second member 14, the filling member 15, and the filling member 16 are arranged on the circle without any gaps in the circumferential direction so that the rope member 12 and the ring member 20 do not rotate relative to each other. Fixed.

In FIG. 2 and FIG. 8, the rope groove member 12 is arranged and fixed at different phases along the outer periphery of the ring member 20. For example, in FIG. 2, the rope groove member 12 is fixed to a first phase along the outer periphery of the ring member 20, and in FIG. 8, the rope groove member 12 is a second phase along the outer periphery of the ring member 20. Assume that the phase is fixed.

In the first phase of FIG. 2, the filling member 15 and the filling member 16 are respectively attached in contact with both the first member 13 and the second member 14. In the second phase of FIG. 8, the first member 13 and the second member 14 are adjacent to each other, and a pair of adjacent filling members are disposed between the combinations of the first member 13 and the second member 14 that are adjacent to each other. 15 and a filling member 16 are attached.

The filling member 15 and the filling member 16 can be attached to and detached from the first member 13 and the second member 14, and by removing the filling member 15 and the filling member 16, Can rotate relatively concentrically. A procedure for rotating from the first phase in FIG. 2 to the second phase in FIG. 8 will be described. When the four filling members 15 attached adjacent to the four first members 13 in the first phase of FIG. 2 are removed, the first member 13 and the second member 14, as shown in FIG. A gap 25 is opened between the circumferential directions.

When the rope member 12 is rotated with respect to the ring member 20 in the direction of the arrow X in FIG. 6 to close the gap 25, the second member 14 is brought into contact with the first member 13, as shown in FIG. A gap 26 is formed between the second member 14 and the filling member 16. By attaching the removed filling member 15 to the gap 26, as shown in FIG. 8, the rope member 12 and the ring member 20 are fixed to each other so as not to rotate relatively in the second phase. .

In the first phase, the eight facing portions 12b, which are the portions of the rope groove member 12 that are opposed to the support member 18 in the radial direction in the first phase, are not opposed to the support member 18 in the radial direction in the second phase. The first member 13, the second member 14, the filling member 15, and the filling member 16 are formed. Specifically, by setting the circumferential length of each of the first member 13, the second member 14, the filling member 15, and the filling member 16 to a predetermined value, the rope groove member 12 is made to the ring member 20. The angle of rotation is adjusted so that the facing portion 12b comes to a position not facing the support member 18 in the radial direction in the second phase. In the second phase, the facing portion 12b faces the hole 22 in the radial direction. Note that the portion of the rope groove member 12 that is opposed to the support member 18 in the radial direction in the second phase is opposed to the hole 22 in the radial direction in the first phase.

For example, as shown in FIG. 2, in the state where the rope 8 to which the car 2 and the counterweight 3 are connected is wound around the leash groove member 12, the load of the rope 8, the car 2 and the counterweight 3 is The support member 18 supports the member 12, the first member 13, the second member 14, the filling member 15, the filling member 16, and the ring member 20. At this time, the ring member 20, the first member 13, the second member 14, the filling member 15, the filling member 16, and the rope groove member 12 supported between the support members 18 adjacent to each other are pushed by the rope 8. It is deformed radially inward, that is, toward the boss 17. For this reason, in the rope groove 12a in contact with the rope 8, the rope groove 12a of the facing portion 12b opposed to the support member 18 in the radial direction is easily worn by rubbing against the rope 8; 12a is hard to wear.

According to the elevator sheave 6 configured in this way, the filling member 15 that fixes the rope groove member 12 to the ring member 20 in the first phase is removed, and the rope groove so as to be in the second phase. By rotating the member 12 with respect to the ring member 20 and attaching the removed filling member 15 to the newly opened gap 26, the rope member 12 is fixed to the ring member 20 in the second phase. As a result, the reed groove 12a of the facing portion 12b of the reed groove member 12 that faces the support member 18 in the radial direction, which was easily worn in the first phase, faces the support member 18 in the radial direction in the 2nd phase. Because it does not, it becomes difficult to wear. In this way, by changing the phase of the rope groove member 12 with respect to the ring member 20 from the first phase to the second phase, uneven wear of the rope groove 12a is suppressed, and maintenance accompanying wear of the rope groove 12a is facilitated, The replacement of the groove member 12 can be reduced.

The first member 13 and the second member 14 are not limited to being arranged at equal intervals in four places, but the number of the filling members 15 and the filling members 16 is limited to four each. is not. For example, the first member 13 and the second member 14 may be provided in three places, and the number of the filling members 15 and the filling members 16 may be three.

In addition, for example, the number of the first members 13 and the second members 14 may be increased in a state in which the number of the first members 13 and the second members 14 is four. For example, between the first member 13 and the second member 14, two burying members each having a circumferential length half that of the burying member 15 are attached. When changing the phase, only one filling member is removed, and the rope groove member 12 is rotated. In this case, the angle at which the rope groove member 12 rotates is halved compared to the case of the filling member 15. That is, the number of phases for fixing the rope groove member 12 to the ring member 20 is doubled. Therefore, the phase pitch becomes small and the uneven wear position of the rope groove 12a can be adjusted in small increments.

Thus, regarding the arrangement of the rope groove member 12, the ring member 20, the first member 13, the second member 14, the filling member 15, and the filling member 16, the first phase is not limited to the arrangement of FIG. In addition, the second phase is not limited to the arrangement of FIG. Further, when the arrangement of the first phase is changed, the position of the facing portion 12b, which is a portion of the rope groove member 12 that faces the support member 18 in the radial direction, also changes from that in FIG.

Further, the sheave is not limited to the sheave 6 of the hoisting machine 5, but the same effect can be obtained by a sled wheel that winds a rope around the rope.

Further, the number of the support members 18 is not limited to eight and equal intervals, and the number may be increased or decreased and the intervals may be changed. Further, the arrangement of the first member 13 provided in the ring member 20 is not limited to the position facing the support member 18 in the radial direction, and may be arranged at a position not facing the radial direction.

The direction in which the rope groove member 12 is rotated with respect to the ring member 20 is not limited to the arrow X in FIG. 6. For example, the embedding member 16 is removed instead of the embedding member 15 and the direction of the arrow X is reversed. The phase may be changed by rotating to.

6 sheaves, 10 shafts, 11 sheave bodies, 12 sheave grooves, 12a sheave grooves, 13 first members, 14 second members, 15 filling members, 16 filling members, 17 bosses, 17a holes, 18 support members, 20 Ring member, 22 holes, 25 gaps, 26 gaps

Claims (4)

A boss attached to the shaft,
An annular member formed annularly on the outer periphery of the boss so as to face the boss;
A plurality of the bosses spaced apart from each other in the circumferential direction of the boss, and a support member that supports the ring member;
A rope groove member having a shape along the outer periphery of the ring member and provided with a rope groove in the circumferential direction on the outer periphery,
Fixing means for fixing the rope groove member to the ring member in either the first phase or the second phase along the outer periphery of the ring member;
In the first phase, the portion of the rope groove member that faces the support member in the radial direction does not face the support member in the radial direction in the second phase. The fixing means includes
A first member provided on an outer peripheral portion of the ring member so as to be in contact with an inner peripheral surface of the rope groove member;
A second member provided on the inner circumferential portion of the rope groove member so as to be in contact with the outer circumferential surface of the ring member;
A filling member that fills a circumferential gap between the first member and the second member;
The elevator sheave according to claim 1, further comprising: The elevator sheave according to claim 2, wherein the gap is open on both sides in the circumferential direction of the first member, and the filling member is provided in each gap. The elevator sheave according to claim 3, wherein a plurality of the filling members are buried in the gap.

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