JP2012136348A - Device for preventing detachment of main rope wrapped around hoisting machine of elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detachment preventing device including a mechanism for positioning a regulation part, which is provided in a range hidden between a main sheave of a hoisting machine of an elevator and a wall of a hoistway, through visual inspection.SOLUTION: The detachment preventing device 7 includes a first regulation part 71 and a support part 73. The first regulation part 71 is disposed at a first position P1 close to a point S1, in which a main rope 6 wrapped to be fitted in a groove 311 of the main sheave 31 is separated from the main sheave 31, in a range hidden between the main sheave 31 installed in the hoisting machine 3 and a wall of the hoistway 2, and is positioned at a distance from the main rope 6, in the distance smaller than the depth of the groove 311, in the radial direction of the main sheave 31. The support part 73, to which the first regulation part 71 is fitted, is configured so that the first regulation part 71 can be moved from the first point P1 to a second point P2, in which the first regulation part 71 can be directly checked through visual inspection.

Description

  Embodiments of the present invention relate to a detachment prevention device that prevents a main rope of an elevator from being detached from a main sheave of a hoisting machine.

  In the elevator, when the main rope hung on the main sheave of the hoisting machine vibrates due to an earthquake or the like, a locking device is installed to prevent the main rope from coming off from the groove of the main sheave. This detachment prevention device is provided in the vicinity of a point where the main rope extends in the tangential direction of the main sheave, and has a restricting portion that is arranged in a non-contact manner with the main rope fitted in the groove of the main sheave. The position of the restricting portion is adjusted by inserting a gap gauge so that the distance between the main rope and the restricting portion is within a predetermined dimension. Also, during regular maintenance inspections, it is confirmed that the interval is within the specified dimensions.

  In order to position the regulating part of the locking device to the installation position, a convex part is provided on the round bar shaped regulating part, and after this convex part is in contact with the main rope, the regulating part is rotated by the main sheave. There is a detachment prevention device that makes this restricting portion non-contact with the main rope by rotating or reversing around an axis parallel to the central axis.

  In addition, depending on the location where the hoisting machine is installed, there may be a limitation in the working space for adjusting the distance between the main rope and the restricting portion and the direction in which the hoisting machine is approached for working. Even in such a case, there is a detachment prevention device that supports the restricting portion with an arm that rotates around a position away from the outer periphery of the main sheave so that the gap between the main rope and the restricting portion can be easily adjusted. The restricting portion of the locking device approaches or separates from the main rope as the arm rotates.

JP 2007-131379 A JP 2009-208923 A

  By the way, there is an elevator in which a hoisting machine is installed at a position just below the ceiling of the hoistway and close to the side wall without providing a machine room. For such an elevator, the restricting portion of the anti-slip device disposed between the side wall of the hoistway and the main sheave is hidden by the main sheave and cannot be visually confirmed directly by the operator.

  Therefore, after arranging the convex part of the restricting part in contact with the main rope, the anti-separation device which rotates the spot around the axis of the restricting part and positions the restricting part away from the main rope. In this case, the operation of arranging and positioning the restricting portion must be performed only with the sense of the hand. Further, in the case of a locking device in which an arm is attached to the restricting portion, it cannot be directly confirmed whether the restricting portion is correctly positioned with respect to the main rope.

  In view of this, there is provided a detachment prevention device including a mechanism for visually locating a regulating portion installed in a range hidden between a main sheave of an elevator hoist and a wall of a hoistway.

  The come-off prevention device of one embodiment includes a first restricting portion and a support portion. The first restricting portion is a range hidden between the main sheave mounted on the elevator hoist and the wall of the hoistway, and in the vicinity of the point where the main rope hung on the groove of the main sheave is separated from the main sheave. 1 and is positioned away from the main rope at a distance smaller than the groove depth in the radial direction of the main sheave. The support portion is configured such that the first restricting portion is attached and the first restricting portion can be moved from the first position to a second position where the first restricting portion is directly visible.

The perspective view which shows an elevator provided with the slipping-off prevention apparatus of 1st Embodiment. The perspective view which looked at the elevator hoist shown in FIG. 1 from the main sheave side. The perspective view of the 1st control part of the anti-slipping apparatus with which the winding machine shown in FIG. 2 was mounted | worn. Sectional drawing which passes along the control part of the locking device shown in FIG. The front view which attached the control part of the locking device shown in FIG. 2 in the 2nd position. The front view which moves the control part of the slip prevention apparatus shown in FIG. 5 to a 1st position. FIG. 3 is a front view of a locking device attached to the hoist illustrated in FIG. 2. The perspective view which shows the winding machine provided with the come-off prevention apparatus of 2nd Embodiment. The perspective view which attached the control part of the locking device shown in FIG. 8 in the 2nd position. Sectional drawing which moved the control part of the slip prevention apparatus shown in FIG. 9 to the 1st position. Sectional drawing which pulled out to the 2nd position, after making the control part of the locking device shown in FIG. 10 contact a main rope. Sectional drawing which positioned the control part of the locking device shown in FIG. 11 in the 2nd position in the position away from the main rope. The perspective view which shows the winding machine provided with the come-off prevention apparatus of 3rd Embodiment. FIG. 14 is a partially exploded perspective view of the detachment prevention device shown in FIG. 13. FIG. 14 is a cross-sectional view of a restricting portion and its surroundings of the locking device shown in FIG. 13. FIG. 14 is a cross-sectional view in which a restricting portion of the locking device shown in FIG. 13 contacts the main rope. The perspective view which shows the winding machine provided with the come-off prevention apparatus of 4th Embodiment. FIG. 18 is a perspective view of the anti-slip device shown in FIG. 17 rotated to a second position. The perspective view which adjusts the control part of the locking device shown in FIG. 18 in a 2nd position. The perspective view which returned the control part of the slip prevention apparatus shown in FIG. 19 to the 1st position. The perspective view which shows the winding machine provided with the come-off prevention apparatus of 5th Embodiment. The disassembled perspective view which removed the support part of the locking device shown in FIG. Sectional drawing which passes along the control part of the come-off prevention apparatus shown in FIG. FIG. 24 is a cross-sectional view in which a regulating portion near the wall of the locking device shown in FIG. FIG. 24 is a cross-sectional view of positioning a second restricting portion that is paired with a restricting portion near the wall of the locking device shown in FIG.

  The anti-slip device of the first embodiment will be described with reference to FIGS. An elevator 1 shown in FIG. 1 is an elevator of a type that does not have a machine room, and a hoisting machine 3 is arranged at the uppermost part of a hoistway 2. As shown in FIG. 1, the main sheave 31 is disposed at a corner 21 on the back side of the uppermost portion of the hoistway 2 when viewed from the entrance 4 </ b> A of the riding rod 4. The riding rod 4 has a rod sheave 41 at the bottom, and the counterweight 5 has a weight sheave 51 at the top. The rod guide rail 42 for guiding the riding rod 4 has a rod side rope hitch 43 at the top. The weight guide rail 52 that guides the counterweight 5 has a weight side rope hitch 53 at the top. The main rope 6 is connected from the heel side rope hitch 43 to the weight side rope hitch 53 via the heel sheave 41, the main sheave 31, and the weight sheave 51.

  As shown in FIG. 2, the anti-separation device 7 regulates the main rope 6 that is hung on the main sheave 31 attached to the hoisting machine 3 so as not to come off from the groove 311 of the main sheave 31. The come-off prevention device 7 includes a first restricting portion 71 and a support portion 73. As shown in FIG. 2, the first restricting portion 71 is hidden between the main sheave 31 and the wall of the hoistway 2 and hidden behind the main sheave 31 when viewed from the center side of the hoistway 2. As shown in FIG. 7, the main rope 6 hung on the groove 311 of the main sheave 31 is disposed at the first position P <b> 1 in the vicinity of the point S <b> 1 away from the main sheave 31. The first restricting portion 71 is positioned away from the main rope 6 by a distance smaller than the depth of the groove 311 in the radial direction of the main sheave 31.

  The support part 73 is configured such that the first restricting part 71 is attached and the first restricting part 71 can be moved to a second position P2 that can be directly recognized when viewed from the center of the hoistway 2. In the first embodiment, as shown in FIGS. 2 and 5 to 7, the support portion 73 has a ring shape that is concentrically rotated with the rotation shaft 31 </ b> A of the main sheave 31. The first restricting portion 71 can be moved from the first position P1 to the second position P2.

  Further, the anti-separation device 7 further includes a second restricting portion 72 as shown in FIGS. The second restricting portion 72 is disposed at a third position P3 in the vicinity of the point S2 where the main rope 6 is separated from the main sheave 31 within a range that can be directly recognized from the center of the hoistway 2. The second restricting portion 72 is positioned away from the main rope 6 at a distance smaller than the depth of the groove 311 in the radial direction of the main sheave 31 at the third position P3.

  FIG. 3 shows an enlarged view of the periphery of the first restricting portion 71 of the locking device 7 according to the first embodiment. 4 is a cross-sectional view of the main sheave 31 passing through the first restricting portion 71 in the radial direction. The second restricting portion 72 and the configuration that supports the second restricting portion 72 are the same as the configuration of the first restricting portion 71.

  As shown in FIGS. 3 and 4, the support portion 73 includes a base ring 731 and a stem 732. As shown in FIG. 4, the hoisting machine 3 has a groove 301 formed concentrically with the rotation shaft 31 </ b> A of the main sheave 31 on the side facing the main sheave 31. The base ring 731 has a rim 733 that fits into the groove 301 shown in FIG. 4, and an arc-shaped slot 734 is formed as shown in FIGS. 5 to 7. The slot 734 has a length sufficient to move the first restricting portion 71 from the first position P1 to the second position P2.

  The stem 732 is fixed to a tab 735 provided on the outer peripheral edge of the base ring 731 as shown in FIG. The stem 732 extends across the outer periphery of the main sheave 31 in parallel with the rotation shaft 31 </ b> A of the main sheave 31, and the tip is bent toward the rotation shaft 31 </ b> A of the main sheave 31. As shown in FIGS. 3 and 4, the support portion 73 has a long hole 736 having a long diameter arranged along the radial direction of the main sheave 31 at the tip of the stem 732. The first restricting portion 71 is attached to the long hole 736.

  The support portion 73 further includes a stem 732 for holding the second restricting portion 72 at the third position P3. The base ring 731 has a tab 737 similar to the tab 735 that holds the first restricting portion 71 at a portion corresponding to the third position P3 when the first restricting portion 71 is at the first position P1. is doing. A stem 732 that holds the second restricting portion 72 is attached to the tab 737. Further, in order to position the second restricting portion 72 with respect to the main rope 6, the stem 732 for the second restricting portion 72 is also a length in which a long diameter is arranged in a direction parallel to the radial direction of the main sheave 31. A hole 736 is provided.

  Each of the stems 732 to which the first restricting portion 71 or the second restricting portion 72 is attached has a hook 732 a that engages with the tips of the tabs 735 and 737. By applying the hook 732 a to the tips of the tabs 735 and 737, the long diameter of the long hole 736 is matched with the radial direction of the main sheave 31.

  A bolt 302 that is screwed into the hoisting machine 3 is passed through a slot 734 formed in the base ring 731 as shown in FIG. The bolts 302 are arranged one by one at a position just in contact with the end of the slot 734 when the first restricting portion 71 is at the first position P1 and the second position P2. When rotating the support part 73, the other bolt 302 is removed leaving the bolt 302 used as a guide. Moreover, when fixing the 1st control part 71 to the 1st position P1 or the 2nd position P2, both the two bolts 302 are mounted | worn.

  The stopper device 7 configured as described above positions the first restricting portion 71 and the second restricting portion 72 by the following procedure after the main rope 6 is hung on the main sheave 31. As shown in FIG. 5, first, the first restricting portion 71 is attached to the support portion 73 at the second position P2. At this time, the second restricting portion is not yet attached. The support portion 73 is fixed by a bolt 302 passed through the slot 734 so as not to move carelessly.

  FIG. 4 shows a situation where the first restricting portion 71 is positioned at the second position P2. The first restricting portion is adjusted in distance to the main rope 6 in the direction along the radius of the main sheave 31 at the second position P2. The distance between the main rope 6 and the first restricting portion 71 is set to be smaller than the depth of the groove 311 of the main sheave 31. When positioning the first restricting portion 71, a gap gauge having a thickness corresponding to the distance to the main rope 6 is inserted and fixed to the stem 732 with the first restricting portion 71 pressed against the gap gauge. .

  In the case of the first embodiment, the support portion 73 is configured to rotate concentrically with the rotation shaft 31 </ b> A of the main sheave 31. That is, the second position P2 does not have to be the place shown in FIG. 5 as long as it is in a range where the main rope 6 is hooked on the groove 311 of the main sheave 31. And the 1st control part 71 is positioned in the 2nd position P2 on the same conditions as positioning in the 1st position P1.

  Even if it can be confirmed that the first restricting portion 71 is properly positioned by inserting the gap gauge at the second position P2, if the adjustment work is difficult to perform smoothly, the positioning is performed according to the following procedure. You may adjust.

  First, the first restricting portion 71 is brought into contact with the main rope 6 once and fixed to the stem 732. The first restricting portion 71 is once removed together with the stem 732. Then, a first mark indicating the position when the first restricting portion 71 contacts the main rope 6 is marked on the stem 732. Based on the first mark, a second mark indicating the position where the first restricting portion 71 should be aligned is marked. The first restricting portion 71 is re-fixed to the stem 732 according to the second mark, and the stem 732 is attached to the tab 735 of the base ring 731. Finally, a gap gauge is inserted between the first restricting portion 71 and the main rope 6, and it is directly visually confirmed whether it is correctly positioned at the second position P2.

  As described above, the first restricting portion 71 positioned at the second position P2 shown in FIG. 5 is moved to the first position P1 by rotating the support portion 73 as shown in FIG. . In consideration of attaching or removing the bolt 302 for fixing the base ring 731, the slot 734 provided in the base ring 731 is shown in FIG. 5 when the first restricting portion 71 is in the second position P 2. The main sheave 31 is arranged on the upper side. Thereby, the support part 73 can be rotated only by removing the bolt 302 on the side close to the second position P2.

  The slot 734 is formed such that an end thereof abuts against the bolt 302 at the first position P1 or the second position P2. Accordingly, when the first restricting portion 71 is moved to the first position P1, the end of the slot 734 located on the side closer to the second position P2 in FIG. 5 is the first position P1. The support part 73 stops in contact with the bolt 302 arranged in the vicinity. Since the end of the slot 734 located on the side closer to the first position P1 has moved to the vicinity of the second position P2, the bolt 302 is attached so as to contact this end.

  In the case of the first embodiment, the first position P1 and the second position P2 are provided at positions that are 180 degrees symmetrical about the rotation shaft 31A of the main sheave 31. Therefore, the bolt 302 for fixing the first restricting portion 71 to the first position P1 is disposed at the same position as the bolt 302 for fixing to the second position P2. If the second position P2 is not symmetrical with respect to the first position P1, the screw 302 is attached so that the bolts 302 can be mounted at positions where both ends of the slot 734 reach when the support portion 73 is rotated. Make a hole.

  When the first restricting portion 71 is positioned with respect to the main rope 6 at the first position P1, a stem 732 for fixing the second restricting portion 72 at the third position P3 is attached to the base ring 731. . Since the 2nd control part 72 can be directly visually recognized from the center of the hoistway 2, it is positioned and fixed with respect to the main rope 6 as shown in FIG.

  As described above, the anti-separation device 7 according to the first embodiment is arranged in a range hidden between the main sheave 31 and the wall of the hoistway 2 when viewed from the center of the hoistway 2. The restriction portion 71 is moved to a second position where it can be visually recognized, and positioning with respect to the main rope 6 is performed. Since the mechanism of the locking device 7 has a simple configuration, the workability is good.

  Hereinafter, the anti-separation device 7 according to the second to fifth embodiments will be described. In each embodiment, a different point from the detachment prevention device 7 of the first embodiment will be described, and the common points will refer to the description of the first embodiment and the drawings. In each embodiment, the configuration having the same function as the locking device 7 of the first embodiment is denoted by the same reference numeral as the configuration of the locking device 7 of the first embodiment in the drawings of the embodiments. The description is omitted.

  Further, the anti-separation device 7 according to the second to fifth embodiments is installed in the hoisting machine 3 arranged at the same position as the hoisting machine 3 of the elevator 1 shown in FIG. When the hoisting machine 3 is arranged along the wall of the hoistway, the anti-separation device 7 is configured such that the restricting portion arranged in the range hidden by the main sheave 31 becomes the first restricting portion 71. That is, the slip prevention device 7 is configured such that the first restricting portion 71 is disposed on the side facing the wall of the hoistway 2.

  The anti-slip device of the second embodiment will be described with reference to FIGS. 8 includes a first restricting portion 71, a second restricting portion 72, and a support portion 73. The support unit 73 includes a base plate 741, a slide lever 742, and a stem 732. The base plate 741 is attached to the side portion 303 of the hoisting machine 3 facing the wall of the hoistway 2. The base plate 741 has a guide 743 that holds the slide lever 742 so that the slide lever 742 moves in parallel with the rotation shaft 31 </ b> A of the main sheave 31.

  The slide lever 742 has an operation portion 742A that extends downward through the machine bed 32 of the hoisting machine 3 and the wall of the hoistway 2. The guide 743 only needs to be able to guide the slide lever 742, so that the slot formed in the slide lever 742 parallel to the rotation shaft 31 </ b> A of the main sheave 31 and the slot are fixed to the side surface of the hoisting machine 3. It may be configured with a pin.

  The stem 732 is attached to the tip of a slide lever 742 that extends toward the main sheave 31, and the tip is bent toward the rotating shaft 31 </ b> A of the main sheave 31. The distal end of the stem 732 has a long hole 736 in which the long diameter is arranged along the radial direction of the main sheave 31. The first restricting portion is attached to the long hole 736 of the stem 732 attached to the slide lever 742.

  The support portion 73 of the second embodiment further includes an arm 744 that is directly fixed to the side portion 304 of the hoisting machine 3 opposite to the side on which the slide lever 742 is disposed, and a stem that is attached to the tip of the arm 744. 732. The stem 732 is bent toward the rotation shaft 31 </ b> A of the main sheave 31, and has a long hole 736 in which a long diameter is disposed along the radial direction of the main sheave 31. The second restricting portion 72 is attached to the long hole 736. The arm 744 and the stem 732 arrange the second restricting portion 72 at a third position P3 in the vicinity of the point S2 where the main rope 6 is separated from the main sheave 31 within a range that can be directly seen from the center side of the hoistway 2.

  The first restricting portion 71 is moved in parallel with the rotation shaft 31A of the main sheave 31 by the slide lever 742 of the support portion 73, and is arranged at the first position P1 shown in FIG. 8 or the second position P2 shown in FIG. Is done. The support portion 73 may further include a stopper that stops the slide lever 742 at a place where the first restricting portion 71 is set to the first position P1 and the second position P2. Instead of providing a stopper, the guides 743 may be arranged at corresponding locations.

  In the anti-separation device 7 according to the second embodiment configured as described above, the first restricting portion 71 and the second restricting portion 72 are positioned by the following procedure, respectively. First, the stem 732 attached with the first restricting portion 71 is attached to the tip of the slide lever 742 pulled out to the main sheave 31 side. As shown in FIG. 10, the first restricting portion 71 is returned to the first position P1. At this time, the first restricting portion 71 is fixed to the stem 732 so as not to come into contact with the main rope 6 and to be moved away from the rotation shaft 31 </ b> A of the main sheave 31. And in the 1st position P1, the 1st control part 71 is adjusted so that it may contact | abut to the main rope 6. FIG.

  The first restricting portion 71 brought into contact with the main rope 6 is moved to the second position by the slide lever 742 as shown in FIG. A first mark M1 indicating the position when the first restricting portion 71 contacts the main rope 6 is marked on the stem 732. Further, with reference to the first mark M1, the first restricting portion 71 is positioned so as to be separated from the main rope 6 by a distance smaller than the depth of the groove 311 of the main sheave 31 as shown in FIG. Alternatively, the second mark M2 is ruled at a position where the first restricting portion 71 should be aligned, and the first restricting portion 71 is positioned using the ruled mark as a mark.

  Finally, the first restricting portion 71 is moved to the first position P1. You may confirm by inserting the clearance gauge corresponding to the dimension between the main rope 6 and the 1st control part 71 when the 1st control part 71 is positioned. Further, when it is difficult to move the slide lever 742 so that the first restricting portion 71 is at the second position P2, the first restricting portion 71 is removed together with the stem 732 at the second position P2. The work to be performed may be performed.

  The second restricting portion 72 that is directly visible from the center side of the hoistway 2 is disposed at the third position P3 by the arm 744 and the stem 732. Then, the second restricting portion 72 is positioned by a gap gauge so as to be separated from the main rope 6 by a distance smaller than the depth of the groove 311 of the main sheave 31 and visually confirmed. Since the 2nd control part 72 is arrange | positioned independently of the 1st control part 71, even after attaching the 1st control part 71, before attaching the 1st control part 71, it positions. Can do. However, as can be seen from FIGS. 8 and 9, if the second restricting portion 72 is first positioned, the first restricting portion 71 is positioned over the second restricting portion 72. Become. Therefore, it is desirable to attach the first restricting portion 71 first.

  As described above, the anti-separation device 7 of the second embodiment is the main rope 6 even if it is the first restricting portion 71 installed in a range hidden between the main sheave 31 and the wall of the hoistway 2. It is easy to position properly.

  The anti-separation device 7 according to the third embodiment will be described with reference to FIGS. The stopper device 7 shown in FIG. 13 includes a first restricting portion 71, a second restricting portion 72, and a support portion 73. As shown in FIGS. 13 and 14, the support 73 has a first bracket 751 disposed on the wall side of the hoistway and a second bracket 752 disposed on the center side of the hoistway. . As shown in FIG. 13, the first bracket 751 has a long hole 753 having a long diameter arranged in parallel with the rotation shaft 31 </ b> A of the main sheave 31. The first bracket 751 is connected to the side portion 303 of the hoisting machine 3 by a bolt 754 passed through the long hole 753. The first bracket 751 moves in parallel with the rotation shaft 31 </ b> A of the main sheave 31 by the length of the long hole 753.

  The first bracket 751 includes a first plate 751A extending from the side portion 303 of the hoisting machine 3 toward the main sheave 31 and a direction crossing the rotation shaft 31A of the main sheave 31 from the tip of the first plate 751A. The extended second plate 751B and a tab 751C bent from the first plate 751A toward the main sheave 31 in a range crossing the outer periphery of the main sheave 31 are provided. The first restricting portion 71 is attached to the tab 751C with two bolts. FIG. 15 shows a cross section in a state where the first restricting portion 71 is attached to the tab 751C.

  As shown in FIG. 15, the first restricting portion 71 has a long hole 711 along the radial direction of the main sheave 31 and is fixed to the tab 751 </ b> C with a bolt 755. The long hole 711 has a length sufficient to move in the radial direction of the main sheave 31 by the depth of the groove 311 of the main sheave 31 from the position where the first restricting portion 71 contacts the main rope 6. Yes. Instead of forming the long hole 711 in the first restricting portion 71, a long hole having the same length may be provided in the tab 751C and connected by the bolt 755.

  As shown in FIG. 14, the second bracket 752 is fixed to the side portion 304 of the hoisting machine 3 facing the center of the hoistway 2 with bolts 756. A mark M3 for alignment is ruled across the second bracket 752 and the side portion 304 of the hoisting machine 3. A third plate 752A extending from the side portion 304 of the hoisting machine 3 to the main sheave 31 side, a fourth plate 752B extending from the tip of the third plate 752A toward the rotation shaft 31A of the main sheave 31, A tab 752C bent from the third plate 752A toward the main sheave 31 is provided in a range crossing the outer periphery of the main sheave 31. The second restricting portion 72 is attached to the tab 752C. The cross section in which the second restricting portion 72 is attached to the tab 752C is the same as the cross section shown in FIG. 15 in which the first restricting portion 71 is attached to the tab 751C.

  The tip of the second plate 751B extending to a position overlapping the fourth plate 752B is connected to the fourth plate 752B and a bolt 757 as shown in FIGS. Since the positioning mark M4 is ruled across the second plate 751B and the third plate 752A, these are aligned. The connection position at which the second plate 751B overlaps the fourth plate 752B may be anywhere in the direction crossing the rotation shaft 31A of the main sheave 31, and the closer to the center of the hoistway 2, the easier it is to operate the bolt 757.

  In the anti-separation device 7 of the third embodiment configured as described above, the first restricting portion 71 and the second restricting portion 72 are positioned according to the following procedure. First, the first restricting portion 71 is attached to the tab 751C of the first bracket 751. At this time, the first restricting portion 71 is moved away from the main rope 6. As shown in FIG. 13, the first bracket 751 is attached to the side portion 303 of the hoisting machine 3 so that the first restricting portion 71 is at the first position P1. As shown in FIG. 16, the first restricting portion 71 is fixed in contact with the main rope 6.

  As shown in FIG. 14, the first bracket 751 is moved in parallel with the rotation shaft 31A of the main sheave 31, and the first restricting portion 71 is set to the second position P2. Since the depth of the groove 311 of the main sheave 31 is known, the first restricting portion 71 is separated from the main rope 6 by a distance smaller than the depth of the groove 311 of the main sheave 31 as shown in FIG. A mark M5 is ruled at a position where the tip of the tab 751C of the bracket 751 is located. Then, the mark M5 is aligned with the tip of the tab 751C of the first bracket 751 as shown in FIG. 15, and the first restricting portion 71 is fixed to the tab 751C. The first bracket 751 is moved to dispose the first restricting portion 71 at the first position P1, and the second plate 751B is fixed to the fourth plate 752B.

  The second restricting portion 72 may be performed at any stage after fixing the second bracket 752 to the side portion 304 of the hoisting machine 3. Since the second restricting portion 72 is in the third position P3 that can be directly visually recognized, the gap gauge is arranged so that the second restricting portion 72 is separated from the main rope 6 by a distance smaller than the depth of the groove 311 of the main sheave 31. It is positioned using.

  As described above, the locking device 7 of the third embodiment has a simple structure and positions the first restricting portion 71 and the second restricting portion 72 within a visible range. Therefore, the workability by this detachment prevention device 7 is good. Note that the first bracket 751 and the second bracket 752 shown in FIGS. 13 and 14 are each formed by bending a series of plate materials, and the first plate 751A, the second plate 751B, and the third Neither the plate 752A nor the fourth plate 752B has an opening. In order to widen the field of view when positioning the first restricting portion 71 and the second restricting portion 72, a window may be provided in the third plate 752A of the second bracket 752.

  The anti-separation device 7 according to the fourth embodiment will be described with reference to FIGS. 17 to 20. 17 includes a first restricting portion 71, a second restricting portion 72, and a support portion 73. The support unit 73 includes a first base plate 761, a second base plate 762, a first rod 763, a second rod 764, a first connection plate 765, and a second connection plate 766.

  The first base plate 761 is attached to the side portion 303 of the hoisting machine 3 facing the wall of the hoistway 2. The second base plate 762 is attached to the side portion 304 of the hoisting machine 3 facing the center of the hoistway 2. The first rod 763 is arranged in parallel with the rotation shaft 31A of the main sheave 31 by a guide 761A provided on the first base plate 761, and is configured to rotate and move in parallel with the rotation shaft 31A of the main sheave 31. Has been.

  The 1st connection plate 765 is being fixed to the front-end | tip of the 1st rod 763, and the 1st control part 71 is attached. The first connecting plate 765 is disposed in the direction toward the center of the main sheave 31 as shown in FIG. 17 when the first restricting portion 71 is at the first position P1, and the first restricting portion 71 When it is at position 2 of P2, it rotates downward as shown in FIG. 18 and hangs down from the end of the first rod 763 in the vertical direction. The first connecting plate 765 has a long hole 736 in which a long diameter is arranged along the radial direction of the main sheave 31 when the first restricting portion 71 is held at the first position P1. The first restricting portion 71 is attached to the long hole 736, and the attachment position is adjusted along the long hole 736.

  The second rod 764 and the second connecting plate 766 are mirror images of the first rod 763 and the first connecting plate 765 on the surface passing through the rotation shaft 31A of the main sheave 31. The first connecting plate 765 and the second connecting plate 766 have the main sheave 31 when the first restricting portion 71 is disposed at the first position P1 and the second restricting portion 72 is disposed at the third position P3. In the vicinity of crossing the rotary shaft 31A, they are superposed and fixed with bolts 767.

  In the locking device 7 of the fourth embodiment configured as described above, as shown in FIG. 18, the first connecting plate 765 and the second connecting plate 766 have the first rod 763 and the second connecting plate 766, respectively. The first restricting portion 71 and the second restricting portion 72 are positioned after the main rope 6 is hung on the main sheave 31 while hanging from the tip of the rod 764.

  First, the 1st control part 71 and the 2nd control part 72 are attached with respect to the long hole 736 so that it may leave | separate most from the main rope 6 when it is set as the 1st position P1 and the 3rd position P3, respectively. Next, the first restricting portion 71 is aligned with the position in contact with the main rope 6 at the first position P1. Since the 2nd control part 72 can be visually recognized in the 3rd position P3, it positions by a clearance gauge etc. so that it may leave | separate from the main rope 6 only the distance smaller than the depth of the groove | channel 311 of the main sheave 31.

  As shown in FIG. 19, the first restricting portion 71 is rotated from the first position P1 to the second position P2 around the first rod 763. If it is difficult to visually recognize the first restricting portion 71 simply by rotating the first rod 763, the first rod 763 is moved in a direction away from the hoisting machine 3 in parallel with the rotation shaft 31A of the main sheave 31. . Since it becomes visible by moving to the second position P2, the first mark M1 indicating the position when the first restricting portion 71 contacts the main rope 6 as shown in FIG. Write a ruled line on the connecting plate 765.

  Further, the first restricting portion 71 is aligned with the position separated from the first mark M1 by a distance smaller than the depth of the groove 311 of the main sheave 31, or the second mark M2 indicating the position is marked, By aligning with the second mark M2, the first restricting portion 71 is positioned. Finally, as shown in FIG. 20, the first restricting portion 71 is turned to the first position, and the second restricting portion 72 is turned to the third position as shown in FIG. The connection plate 765 and the second connection plate 766 are fixed with bolts 767.

  The anti-separation device 7 configured as described above has a simple structure and positions the first restricting portion 71 and the second restricting portion 72 within a visible range. The anti-separation device 7 is configured such that the support portion 73 for the first restricting portion 71 and the second restricting portion 72 has a mirror image relationship with respect to a vertical plane passing through the rotation shaft 31 </ b> A of the main sheave 31. Therefore, the workability for positioning the first restricting portion 71 and the second restricting portion 72 is such that either side of the side portions 303 and 304 of the hoisting machine 3 is adjacent to the wall of the hoistway 2. Even in the case, no difference will occur.

  The anti-separation device 7 according to the fifth embodiment will be described with reference to FIGS. 21 includes a first restricting portion 71, a second restricting portion 72, and a support portion 73. The support portion 73 includes a first base plate 761, a second base plate 762, and a connection bracket 77. The hoisting machine 3 shown in FIG. 21 includes a heat shield plate 33 that isolates a portion that generates heat so as not to touch it carelessly. The first base plate 761 is attached to the side portion 303 of the hoisting machine 3 facing the wall of the hoistway 2 via the heat shield plate 33. The second base plate 762 is attached to the machine bed 32 on the side facing the center of the hoistway 2.

  The first base plate 761 extends along the side 303 of the hoisting machine 3 in parallel with the rotation shaft 31A of the main sheave 31 and across the outer periphery of the main sheave 31, and the tip thereof is the rotation shaft 31A of the main sheave 31. It is folded towards. The second base plate 762 extends along the upper surface of the machine bed 32. The connection bracket 77 is connected to the tip of the first base plate 761 and the upper surface of the second base plate 762.

  A first end 771 of the connection bracket 77 connected to the first base plate 761 has a fitting hole 772 in which a major axis is arranged in the radial direction of the main sheave 31. In the fitting hole 772, the insertion portion through which the head of the bolt attached to the tip of the first base plate 761 passes is disposed near the rotation shaft 31 </ b> A of the main sheave 31. The second end 773 of the connecting bracket 77 connected to the second base plate 762 has a long hole 774 having a long diameter arranged in parallel to the radial direction of the main sheave 31.

  The first restricting portion 71 is attached to the first end portion 771 side of the connection bracket 77 without including an adjustment allowance. The second restricting portion 72 is attached to a long hole 736 formed in the connecting bracket 77 so that the first restricting portion 71 is disposed at the third position P3 when the first restricting portion 71 is disposed at the first position P1. It is done.

  As shown in FIG. 21, the anti-separation device 7 of the fifth embodiment connects the first bracket 71 to the first base plate 761 and the second base plate 762, thereby connecting the first restricting portion 71 to the first. The first restricting portion 71 is disposed at the second position P2 by being removed from the first base plate 761 and the second base plate 762 as shown in FIG.

  In the anti-separation device 7 of the fifth embodiment configured as described above, the first restricting portion 71 and the second restricting portion 72 are positioned in the following procedure. First, as shown in FIG. 22, the main rope 6 is hung on the main sheave 31 with the connecting bracket 77 removed. Next, the connection bracket 77 with the second restricting portion 72 removed is assembled to the first base plate 761 and the second base plate 762. The first restricting portion 71 is fixed to the connection bracket 77. Therefore, as shown in FIG. 24, the connection bracket 77 is moved along the fitting hole 772 and the long hole 774 until the first restricting portion 71 contacts the main rope 6.

  As shown in FIG. 24, a first mark M1 indicating the position of the second end 773 of the connection bracket 77 when the first restricting portion 71 contacts the main rope 6 is marked on the second base plate 762. Then, as shown in FIG. 25, the connecting bracket 77 is shifted with respect to the first mark M1, and the first restricting portion 71 is moved away from the main rope 6 by a distance smaller than the depth of the groove 311 of the main sheave 31. Positioning. At this time, a second mark M2 indicating the position where the second end 773 of the connection bracket 77 should be positioned may be marked. Finally, using the gap gauge G, the second restricting portion 72 is shifted along the long hole 736 and positioned at a position away from the main rope 6 by a distance smaller than the depth of the groove 311 of the main sheave 31.

  As described above, in the detachment prevention device 7 of the fifth embodiment, the positioning of the first restricting portion 71 that is hidden between the main sheave 31 and the wall of the hoistway 2 is positioned from the center of the hoistway 2. The second base plate 762 and the second end 773 of the connecting bracket 77. Since the direction in which the connecting bracket 77 is displaced in order to position the first restricting portion 71 is the same as the direction in which the first restricting portion 71 moves away from the main rope 6, the dimension visually confirmed at this time is substantially the same. Is the same. That is, the same result as that the first restricting portion 71 disposed in the range hidden by the main sheave 31 is positioned by visual confirmation is obtained.

  As described above, according to the anti-separation device 7 of the first to fifth embodiments, the first restricting portion 71 that is disposed in a range that cannot be directly recognized between the wall of the hoistway 2 and the main sheave 31. The dimension to be adjusted when positioning is the same as the actual dimension. Accordingly, it is possible to position the first restricting portion 71 with respect to the main rope 6 with an accuracy that does not substitute for positioning while substantially visually checking, and there is no deviation in the feeling of positioning work.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the scope of the invention. These embodiments and modifications thereof are included in the spirit and scope of the invention, and in the invention described in the claims and equivalents thereof.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 2 ... Hoistway, 3 ... Hoisting machine, 303 ... Side of the hoisting machine facing the wall of the hoistway, 304 ... Side of the hoisting machine facing the center side of the hoistway , 31 ... main sheave, 31A ... rotating shaft, 311 ... groove, 6 ... main rope, 7 ... locking device, 71 ... first restricting portion, 72 ... second restricting portion, 73 ... support portion, 731 ... Base ring, 732 ... Stem, 736 ... Long hole, 741 ... Slide lever, 761 ... First base plate, 762 ... Second base plate, 77 ... Connection bracket, 772 ... Fitting hole (long hole), 774 ... Long hole , S1 ... A point where the main rope leaves the main sheave. P1 ... 1st position, P2 ... 2nd position.

Claims (12)

The main rope hung on the groove of the main sheave is arranged at the first position in the vicinity of the point away from the main sheave as long as it is hidden between the main sheave attached to the elevator hoist and the wall of the hoistway. A first restricting portion positioned away from the main rope at a distance smaller than a depth of the groove in a radial direction of the main sheave;
And a support portion configured to be able to move the first restriction portion from the first position to a second position where the first restriction portion is attached and directly visible. Retaining device. The support portion has a long hole in which a long diameter is arranged along a radial direction of the main sheave when the first restricting portion is held in the first position;
The anti-separation device according to claim 1, wherein the first restricting portion is attached to the elongated hole. The support portion has a ring shape that is rotated concentrically with a rotation shaft of the main sheave, and moves the first restriction portion from the first position to the second position around the rotation shaft. The anti-separation device according to claim 1, wherein the anti-separation device is configured to be able to perform the operation. The support part is
A ring-shaped base ring that rotates concentrically with the rotation shaft of the main sheave;
A stem that is attached to the base ring and holds the first restricting portion so as to be displaced in a radial direction with respect to a rotation axis of the main sheave. Anti-slip device. The support portion is attached to a side portion of the hoisting machine so that the first restricting portion can be moved from the first position to the second position in parallel with the rotation shaft of the main sheave. The detachment prevention device according to claim 1, wherein the detachment prevention device is configured as follows. The support part is
A base plate mounted on a side of the hoisting machine;
6. A slide lever that is held by the base plate and moves the first restricting portion from the first position to the second position in parallel with the rotation axis of the main sheave. The locking device described in 1. The support portion is attached to a side portion of the hoisting machine and rotates the first restricting portion from the first position to the second position around an axis parallel to the rotation axis of the main sheave. The detachment prevention device according to claim 1, wherein the detachment prevention device is configured so as to be able to be performed. The support part is
A first base plate mounted on a side of the hoisting machine;
A first rod held by the base plate and moving in parallel with the rotation axis of the main sheave and rotating about an axis parallel to the rotation axis;
The anti-separation device according to claim 7, further comprising: a first connection plate that is attached to the first rod and holds the first restricting portion. The support part is
A base plate mounted on a side of the hoisting machine;
A connection bracket that is connected to the base plate and holds the first restricting portion in the first position, and moves the first restricting portion to the second position by being removed from the base plate; The anti-separation device according to claim 1, further comprising: The connecting bracket is connected to the base plate through a long hole having a long diameter parallel to a direction in which the first restricting portion in the first position is in contact with the main rope. A detachment prevention device according to claim 9. The main rope is disposed at a third position in the vicinity of a point where the main rope is separated from the main sheave within a directly visible range, and is positioned at a distance smaller than the depth of the groove in the radial direction of the main sheave. A second restricting section,
2. The anti-separation device according to claim 1, wherein the support portion has a long hole having a long diameter arranged in a direction parallel to a radial direction of the main sheave. The first restricting portion has a depth that is greater than the depth of the groove in the radial direction of the main sheave at the second position on the basis of the position that is in contact with the main rope at the first position and fixed to the support portion. 2. The locking device according to claim 1, wherein the locking device is fixed to a position away from the main rope at a small distance and then returned to the first position.

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