JP5373679B2 - Hoisting machine - Google Patents

Abstract

The invention provides a hoister capable of conveniently adjusting the interval deviation between a suspension cable holding lever and a plurality of suspension cables so as to improve the reliability. The hoister comprises a rope wheel (9) formed with a plurality of suspension cable grooves and supported by the pivot of a fixed component (17), a plurality of suspension cables (4) wound on the rope wheel (9), a suspension cable retaining bar (14) arranged close to the plurality of suspension cables and extending along the axial direction of the rope wheel and the fixed component (17) for supporting the suspension cable retaining bar in the mode of a cantilever. An adjustment mechanism for adjusting the parallelism between the rope wheel and the suspension cable retaining bar is arranged between the suspension cable retaining bar (14) and the fixed component (17).

Description

  The present invention relates to a hoisting machine in which a plurality of ropes are wound around a sheave having a plurality of rope grooves arranged side by side, and more particularly, to a hoisting machine having a rope guard that prevents the rope from departing from the sheave. .

  For example, an elevator hoisting machine is obliged to provide a rope guard so that a rope that suspends a car from a rope groove of a sheave does not come off due to vibration such as an earthquake. Furthermore, due to recent revisions to the Building Standards Law, the dimensional standard between the rope groove peak and the rope guard has become stricter, and therefore it is required to strictly manage the dimension between the rope and the rope guard.

  As a mechanism for adjusting the distance between the rope guard and the rope, for example, as disclosed in Patent Document 1, a U-shape is formed so as to cover the sheave rope wrapping portion in the vicinity of the shaft support portion of the sheave. An adjustment mechanism that supports the formed rope guard and adjusts the dimension between the rope guard and the rope guard is provided on the support portion of the rope guard.

JP-A-11-263555

  The adjustment mechanism disclosed in Patent Document 1 adjusts the two leg portions of the rope guard formed in a U shape and sets the dimension between the rope and the rope guard to a specified dimension, which makes the adjustment work troublesome. In recent years, a configuration in which the rope guard is cantilevered has been put into practical use.

In the configuration where the rope guard is cantilevered, there is an advantage that the distance between the rope can be adjusted in one place, but for cantilever support, due to manufacturing and assembly errors, multiple ropes aligned in the axial direction can be used. On the other hand, there is a problem that the rope guard is displaced in the radial direction, and, for example, the gap between the rope guard and the rope varies in such a way that one end side is narrow and the other end side is wide in the axial direction of the sheave.

  An object of the present invention is to provide a hoisting machine capable of easily adjusting the variation in the distance along the axial direction of a sheave between a plurality of ropes in a cantilevered rope guard and obtaining reliability. It is in.

  In order to achieve the above-mentioned object, the present invention provides a sheave that is formed with a plurality of rope grooves and is pivotally supported by a fixing member, a plurality of ropes wound around the sheave, and a proximity to the plurality of ropes. In a hoisting machine having a rope guard extending in the axial direction of the sheave and a fixing member that cantilever-supports the rope guard, the hoisting machine has an axial direction between the rope guard and the fixing member. An adjustment mechanism for adjusting the parallelism is provided.

  As described above, since the adjustment mechanism is provided between the rope guard and the fixing member, the parallelism of the rope guard can be adjusted and the distance from the rope can be adjusted at one place, and as a result In addition, a reliable hoisting machine capable of strictly managing the dimension between the rope and the rope guard can be obtained.

1 is a plan view showing a first embodiment of a hoist according to the present invention. FIG. 2 is a schematic sectional view showing an elevator to which the hoist shown in FIG. 1 is applied. The enlarged view which shows the rope guard of the hoist shown in FIG. The enlarged view which shows the 1st aspect of the adjustment mechanism of a rope guard shown in FIG. The enlarged view which shows the 2nd aspect of the adjustment mechanism of a rope guard shown in FIG. The enlarged view which shows the 23rd aspect of the adjustment mechanism of a rope guard shown in FIG. FIG. 3 is a phase diagram showing a second embodiment of the hoist according to the present invention. The enlarged view which shows the 1st aspect of the adjustment mechanism of a rope guard shown in FIG. The enlarged view which shows the 2nd aspect of the adjustment mechanism of a rope guard shown in FIG.

  Hereinafter, an example in which the first embodiment of the hoist according to the present invention is applied to an elevator will be described with reference to FIG. 1 and FIG.

  The elevator 1 includes a car 3 that moves up and down in a hoistway 2 formed in a building structure, a counterweight 5 connected to the car 3 via a rope 4, and the rope installed on the top of the hoistway. 4 has a hoisting machine 6 that drives the hoisting machine 4 and a curling wheel 7 installed in the vicinity of the hoisting machine 6.

  The hoisting machine 6 includes a driving motor 8, a sheave 9 that is rotationally driven by the driving motor 8 and winds the rope 4, a brake 10 that is provided coaxially with the sheave 9, and the sheave A rope departure prevention device 11 is provided to prevent the rope 4 wound around the vehicle 9 from deviating from the sheave 9.

  The brake 10 includes a disk 12 connected to the rotating shaft of the drive motor 8 and a clamping member 13 that rotates and stops the sheave 9 by clamping and releasing the disk 12.

  The rope departure prevention device 11 is a rod-shaped rope guard that is adjacent to the plurality of ropes 4 wound around the sheave 9 and extends over the entire axial length of the sheave 9 to prevent the rope 4 from departing. 14, a connecting tool 15 connected perpendicularly to one end of the rope guard 14 and extending away from the sheave 9, and a support connected to the other end of the connecting tool 15 and parallel to the rope guard 14. The other end of the support rod 16 is fixed to a fixing member 17, and as a result, the rope guard 14 is cantilevered.

  In the above configuration, when there is a connection error of the rope guard 14, the connector 15, the support rod 16 or an attachment error of the support rod 16 to the fixing member 17, the rope guard 14 is displaced with respect to the axial direction of the sheave 6. As a result, the gap between the rope guard 14 and the rope 4 varies such that the one end side is narrow in the axial direction of the sheave 9 and the other end side is wide.

  Therefore, in the present embodiment, an adjusting mechanism that adjusts the parallelism with the axial direction of the sheave 9 is provided between the rope guard 14 and the fixing member 17. This will be specifically described with reference to FIGS.

  3 and 4, the rope guard 14 and the connecting tool 15 are integrally connected by welding, and the connecting tool 15 and the support rod 16 are bolts so that the distance between the rope guard 14 and the rope 4 can be adjusted. It is connected. That is, the connecting tool 15 is provided with a long hole (not shown) along its extending direction, and the connecting bolt 18 is passed through with the washers 19a and 19b interposed on both sides of the long hole to support rods. 16 is fastened. And when adjusting the space | interval of the rope 4 and the rope guard 14, the connection bolt 18 should be loosened, and the connection tool 15 should just be advanced and retracted within the range of the length of a long hole in that state, and becomes an optimal space | interval. If the connecting bolt 18 is fastened again, the adjustment is completed.

  On the other hand, when the support rod 16 is attached in a bent state with respect to the fixing member 17 and the tip end side of the rope guard 14 is too close to the rope 4, the rope 4 is interposed between the washer 19 a and the connector 15. The fastening bolt 18 is fastened with the stepped liner 20 interposed so that the tip end side of the rope guard 14 that has approached too much is separated. By connecting through the stepped liner 20 in this way, the connecting tool 15 is inclined with respect to the support rod 16, whereby the rope guard 14 is inclined and approached too far from the rope 4. It leaves.

  When the tip of the rope guard 14 is separated from the rope, the inclination direction of the rope guard 14 can be changed by changing the insertion position of the stepped liner 20 as shown in FIG.

  By the way, although the inclination of the rope guard 14 has been described by taking the attachment error of the support rod 16 to the fixing member 17 as an example, there is a case where the rope guard 14 may be inclined due to welding distortion between the rope guard 14 and the connector 15. Moreover, it can respond easily by changing the insertion position of the stepped liner 20.

  Further, when the rope guard 14 is attached in parallel to the axial direction of the sheave 9 and the distances between the ropes 4 and the rope guard 14 are evenly installed, it is not necessary to interpose the stepped liner 20. In such a case, as shown in FIG. 6, the stepped liner 20 is not interposed between the washer 19 a and the connector 15, and the portion of the liner excluding the step portion is the washer 19 a and the support rod 16. It may be sandwiched between and prepared as a spare.

  Next, a second embodiment of the hoist according to the present invention will be described with reference to FIG. Since it is basically the same as that of the first embodiment, the same reference numerals as those in FIGS. 1 to 6 denote the same constituent members, and the description thereof will be omitted.

  In the present embodiment, the first different configuration from the embodiment is the connection configuration of the support rod 16 to the connection tool 15. Specifically, a flange 21 is formed at the connection portion of the support rod 16 to the connector 15, and the connecting bolts 18 a and 18 b are screwed into the flange 21 through a long hole (not shown) of the connector 15. They are connected. Of course, washers 19c and 19d are passed through the connecting bolts 18a and 18b.

  In the above configuration, when the rope guard 14 is tilted without maintaining parallelism with respect to the axial direction of the sheave 9, as shown in FIGS. 8 and 9, the small liner 22 is attached to the outer periphery of the flange 21. By interposing it between the portion and the connecting tool 15, the parallelism of the rope guard 14 with respect to the axial direction of the sheave 9 can be adjusted in the same manner as in the first embodiment, and each rope 4 and rope guard 14 can be adjusted. Can be made uniform.

  By the way, although the above description demonstrated the hoisting machine for elevators, this hoisting machine is not limited to elevators, It can apply to a well-known hoisting machine.

  Furthermore, in each embodiment, the adjusting mechanism for adjusting the parallelism of the rope guard 14 with respect to the axial direction of the sheave 9 is provided between the connecting tool 15 and the support rod 16. 15, and if the rope guard 14 is directly supported by the fixing member 17, an adjusting mechanism may be provided between the rope guard 14 and the fixing member 17.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 3 ... Car, 4 ... Rope, 6 ... Hoisting machine, 9 ... Sheave, 11 ... Rope departure prevention device, 14 ... Rope guard, 15 ... Connecting tool, 16 ... Support rod, 17 ... Fixing member 18, 18a, 18b ... connecting bolts, 19a, 19b, 19c, 19d ... washers, 20 ... stepped liners, 21 ... flanges, 22 ... small liners.

Claims (3)

A sheave that forms a plurality of rope grooves and is pivotally supported by a fixing member, a plurality of ropes wound around the sheave, and a rope that is adjacent to the ropes and extends in the axial direction of the sheave In a hoisting machine having a guard and a fixing member that cantilever-supports the rope guard, the distance between the rope guard and the rope is adjusted between the rope guard and the fixing member, and the sheave of the sheave An adjustment mechanism for adjusting the parallelism of the rope guard with respect to the axial direction is provided .
The adjusting mechanism includes a stepped liner, and adjusts the parallelism of the rope guard by changing an insertion position of the stepped liner . A sheave that forms a plurality of rope grooves and is pivotally supported by the fixing member, a plurality of ropes wound around the sheave, a support rod that is cantilevered by the fixing member, and the rope from the support rod A connecting tool extending toward the rope wrapping portion side of the car, and extending from the front end of the connecting device so as to cover the entire width of the rope wrapping portion of the sheave and to be parallel to the extending direction of the support rod. In the hoisting machine provided with the rope guard, the distance between the rope and the rope of the rope guard is adjusted between the support rod and the coupling tool, and the parallelism of the rope guard with respect to the axial direction of the sheave An adjustment mechanism for adjusting the
The adjusting mechanism includes a stepped liner, and adjusts the parallelism of the rope guard by changing an insertion position of the stepped liner .   The elevator according to claim 1 or 2, wherein the elevator includes a car that moves up and down in the hoistway, a plurality of ropes that suspend the car, and a hoisting machine that drives the ropes by winding them. An elevator characterized by using a hoisting machine.

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