Sheave centering jig and sheave centering method for elevator hoisting device

Abstract

To provide a sheave centering jig for an elevator hoisting machine that can easily perform centering of the sheave of an elevator hoisting device. [Solution] A sheave centering jig for an elevator hoisting device according to an embodiment includes a guide base, an installation base attached to the guide base so as to be movable in a first direction corresponding to the width direction of the first sheave, and a display fixed to the installation base. The display displays an adjustment reference mark on the second sheave for adjusting the center position and inclination of the second sheave in the width direction relative to the first sheave.

Description

[Technical Field]

[0001] The embodiments relate to a sheave centering jig and a sheave centering method for an elevator hoisting device. [Background technology]

[0002] The hoisting machine that raises and lowers the elevator car is sometimes installed in a machine room located above the hoistway. The hoisting machine is installed on the floor of the machine room via a mechanical structure made up of multiple steel sections.

[0003] A main sheave around which the main rope is wound is connected to the hoist. A secondary sheave around which the main rope is wound is installed on the machine structure. The secondary sheave is also called a camber sheave.

[0004] To prevent vibrations from the hoist, main sheave, and secondary sheave from propagating to the building, elastic bodies such as rubber are used, for example, by interposing them between the structural steel members that make up the machine structure.

[0005] The main sheave and secondary sheave may tilt due to deflection of the elastic body or deformation of the mechanical structure. If the degree of tilt is large, it is possible that the main rope or the main sheave and secondary sheave may be damaged. It is also possible that problems such as noise or vibration may occur. For this reason, adjustments may be made to correct the tilt of the main sheave and secondary sheave.

[0006] This adjustment can be made, for example, by hanging a plumb line from the main sheave. In this case, the tilt of the main sheave can be corrected, but it is difficult to adjust the positional relationship between the main sheave and the secondary sheave. [Prior art documents] [Patent documents]

[0007] [Patent Document 1] Japanese Patent Application Laid-Open No. 2017-206370 Summary of the Invention [Problem to be solved by the invention]

[0008] The embodiments aim to provide a sheave centering jig and a sheave centering method for an elevator hoisting machine that can easily center the sheave of an elevator hoisting device. [Means for solving the problem]

[0009] The embodiment is a sheave centering jig for adjusting the centering of a first sheave and a second sheave that constitute an elevator hoisting device. The sheave centering jig includes a guide base, an installation base attached to the guide base so as to be movable in a first direction corresponding to the width direction of the first sheave, and a display fixed to the installation base. The display displays an adjustment reference mark on the second sheave for adjusting the center position and inclination of the second sheave in the width direction relative to the first sheave.

[0010] The embodiment is a sheave centering method for adjusting the centering of a first sheave and a second sheave that constitute an elevator hoisting device. The sheave centering method includes the steps of preparing a sheave centering jig for the elevator hoisting device described above, arranging a guide base at the center position of the first sheave in the width direction, adjusting the position of an installation base relative to the guide base according to the offset between the center positions of the first sheave in the width direction and the second sheave in the width direction, and fixing the installation base to the guide base, displaying an adjustment reference indicator on the second sheave from a display device, and adjusting the center position and inclination of the second sheave in the width direction based on the adjustment reference indicator. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 1 is a perspective view showing a hoisting device in which a sheave centering jig according to a first embodiment is set. [Figure 2]FIG. 2 is a perspective view showing the sheave centering jig shown in FIG. [Figure 3] FIG. 3 is a plan view of the sheave centering jig shown in FIG. [Figure 4] FIG. 4 is a front view of the sheave centering jig shown in FIG. [Figure 5] 5(a) is a plan view showing the guide table shown in FIG. 2, and FIG. 5(b) is an enlarged plan view showing the offset adjustment hole shown in FIG. 5(a). [Figure 6] FIG. 6 is a perspective view showing a sheave centering jig according to the second embodiment. [Figure 7] FIG. 7 is a plan view showing the sheave centering jig shown in FIG. [Figure 8] FIG. 8 is a perspective view showing a sheave centering jig according to the third embodiment. [Figure 9] FIG. 9 is a plan view showing the second scale member shown in FIG. [Figure 10] FIG. 10 is a plan view of the sheave centering jig shown in FIG. [Figure 11] FIG. 11 is a perspective view showing a hoisting device in which a sheave centering jig according to the fourth embodiment is set. [Figure 12] 12 is a perspective view showing the sheave centering jig shown in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0012] Hereinafter, a sheave centering jig for an elevator hoisting device according to a first embodiment will be described with reference to the drawings.

[0013] (First embodiment) 1 to 5(b), a sheave centering jig and a sheave centering method for an elevator hoisting device according to a first embodiment will be described. First, an elevator hoisting device (hereinafter simply referred to as hoisting device 1) installed in the machine room of an elevator will be described.

[0014] As shown in Fig. 1, a hoisting device 1 is installed in a machine room. The hoisting device 1 includes a machine structure 2 installed on the floor of the machine room (not shown), a hoisting machine 3, a main sheave 4, and a secondary sheave 5.

[0015] The machine structure 2 may be made up of a plurality of shaped steel beams. The machine structure 2 may include an elastic body (not shown) such as rubber to prevent vibrations of the hoisting machine 3, the main sheave 4, and the secondary sheave 5 from being transmitted to the building. In FIG. 1 , two shaped steel beams among the plurality of shaped steel beams are shown as a first machine bed 6 and a second machine bed 7.

[0016] The hoisting machine 3 is installed on a machine structure 2. In the example shown in FIG. 1, the hoisting machine 3 is installed on a first machine base 6. Shims (not shown) may be interposed between the hoisting machine 3 and the first machine base 6. The thickness and number of shims may be adjusted as appropriate.

[0017] The main sheave 4 is connected to a shaft (not shown) of the hoisting machine 3. The secondary sheave 5 is located below the main sheave 4 and is rotatably supported by a first machine bed 6 and a second machine bed 7. The main sheave 4 and the secondary sheave 5 are arranged so that a main rope (not shown) is wound around them during operation. The center position in the width direction of the main sheave 4 and the center position in the width direction of the secondary sheave 5 may be the same, or may be offset in the width direction by a desired amount. In the example shown in FIG. 1, the main sheave 4 and the secondary sheave 5 are located between the first machine bed 6 and the second machine bed 7 when viewed from above or below.

[0018] Next, a sheave centering jig (hereinafter referred to as sheave centering jig 10) for the elevator hoisting device 1 according to this embodiment will be described. The sheave centering jig 10 is a jig for adjusting the centering of the main sheave 4 and the secondary sheave 5 that constitute the above-mentioned hoisting device 1. In this embodiment, an example will be described in which the centering adjustment of the main sheave 4 is performed using the secondary sheave 5 as a reference. In this case, the secondary sheave 5 corresponds to the first sheave, and the main sheave 4 corresponds to the second sheave.

[0019] As shown in FIG. 2, the sheave centering jig 10 according to this embodiment may include a support body 11, a guide table 12, an installation table 13, a laser emitter 14, a pair of clamping members 15, a pair of spring members 16, and a fixing bolt 17.

[0020] The support body 11 is capable of abutting from above against the outer peripheral surface of the secondary sheave 5. The support body 11 may include a pair of support members 18. In Fig. 2, the support member 18 located on the front side is shown, but a support member 18 is also arranged on the back side.

[0021] Each support member 18 includes an abutment surface that abuts against the outer peripheral surface of the secondary sheave 5. The abutment surface may have a width that allows it to abut against the outer peripheral surface across multiple sheave grooves of the secondary sheave 5. This allows the guide base 12 to be arranged parallel to the axial direction of the secondary sheave 5. The abutment surface may be a horizontal surface, an inclined surface, or a curved surface, and is optional. The abutment surface may be parallel to the upper surface of the support member 18. The pair of support members 18 may be spaced apart from each other in the second direction D2 described below, and may not overlap with the guide base hole 20 described below in a plan view. Each support member 18 may be spaced apart from the guide base hole 20.

[0022] As shown in Fig. 4, support body 11 may include magnet 19. When support body 11 includes a pair of support members 18, each support member 18 may include magnet 19. Magnet 19 may be configured so that when support body 11 is brought into contact with the outer peripheral surface of secondary sheave 5, an attractive force to secondary sheave 5 is applied to support body 11.

[0023] The guide table 12 is fixed to the support body 11. The guide table 12 is positioned on the support body 11. The guide table 12 may be formed in the shape of a flat plate. The guide table 12 may have a width dimension larger than the width dimension of the secondary sheave 5. The guide table 12 may have a longitudinal direction that is along the width direction of the secondary sheave 5. In the following description, the direction along the longitudinal direction of the guide table 12 is referred to as a first direction D1.

[0024] 2, 3, and 5(a), the guide base 12 may include a guide base hole 20 formed in an elongated hole shape with the first direction D1 as the longitudinal direction. The guide base hole 20 may have a dimension in the first direction that is larger than the width dimension of the secondary sheave 5.

[0025] As shown in FIGS. 5(a) and 5(b), the guide base 12 may include a center mark 21 indicating the center position of the secondary sheave 5 in the width direction, and a plurality of offset adjustment holes 22a to 22d.

[0026] The center mark 21 may be formed in a linear shape. In the example shown in FIG. 5(a), the center mark 21 is formed using a dashed line, but the center mark 21 may be formed using a solid line, and the type of line for the center mark 21 is arbitrary. Alternatively, the center mark 21 is not limited to being formed in a linear shape, and the shape of the center mark 21 is arbitrary as long as it can indicate the center position. The center mark 21 according to this embodiment can be considered to indicate the center position in the width direction of the secondary sheave 5 when the sheave centering jig 10 is set on the secondary sheave 5, due to the action of the spring member 16 described below.

[0027] The plurality of offset adjustment holes 22a to 22d are holes for adjusting the amount of offset between the center position of the secondary sheave 5 in the width direction and the center position of the main sheave 4 in the width direction. The guide base 12 may be able to accommodate a plurality of offset amounts. The guide base 12 shown in FIG. 5(b) is configured to accommodate seven types of offset amounts. The plurality of offset adjustment holes 22a to 22d may include a first offset adjustment hole 22a, a pair of second offset adjustment holes 22b, a pair of third offset adjustment holes 22c, and a pair of fourth offset adjustment holes 22d. The offset adjustment holes 22a to 22d may be threaded holes.

[0028] The first offset adjustment hole 22a may be located at the center position in the width direction of the secondary sheave 5. The first offset adjustment hole 22a may be located at the same position as the center mark 21 in the first direction D1. The first offset adjustment hole 22a is used when the offset amount is zero, that is, when the center position in the width direction of the secondary sheave 5 and the center position in the width direction of the main sheave 4 are not misaligned in the width direction.

[0029] The second offset adjustment holes 22b are located on both sides of the first offset adjustment hole 22a in the first direction D1. The second offset adjustment holes 22b are shifted from the first offset adjustment hole 22a in a second direction D2 that is perpendicular to the first direction D1 in a plan view. The second offset adjustment holes 22b are used when the offset amount is the first offset amount. Either one of the second offset adjustment holes 22b is used depending on the direction in which the center position of the main sheave 4 in the width direction is shifted from the center position of the secondary sheave 5 in the width direction.

[0030] The third offset adjustment holes 22c are located on both sides of the first offset adjustment hole 22a in the first direction D1. The third offset adjustment hole 22c is offset from the first offset adjustment hole 22a in the second direction D2. The third offset adjustment hole 22c is offset from the second offset adjustment hole 22b in both the first direction D1 and the second direction D2. The third offset adjustment hole 22c is used when the offset amount is the second offset amount. The second offset amount is greater than the first offset amount. Either one of the third offset adjustment holes 22c is used depending on the direction in which the center position of the main sheave 4 in the width direction is offset from the center position of the secondary sheave 5 in the width direction.

[0031] The fourth offset adjustment holes 22d are located on both sides of the first offset adjustment hole 22a in the first direction D1. The fourth offset adjustment hole 22d is offset from the first offset adjustment hole 22a in the second direction D2. The fourth offset adjustment hole 22d is offset from the second offset adjustment hole 22b in both the first direction D1 and the second direction D2, and is offset from the third offset adjustment hole 22c. The fourth offset adjustment hole 22d is used when the offset amount is the third offset amount. The third offset amount is greater than the second offset amount. Either one of the fourth offset adjustment holes 22d is used depending on the direction in which the center position of the main sheave 4 in the width direction is offset from the center position of the secondary sheave 5 in the width direction.

[0032] As shown in Figures 2 and 3, the installation table 13 is attached to the guide table 12. The installation table 13 may be formed in a flat plate shape. The installation table 13 according to this embodiment may be in contact with the upper surface of the guide table 12. The installation table 13 is attached to the guide table 12 so as to be movable in the first direction D1. The installation table 13 may be formed in a rectangular shape in a plan view.

[0033] 3, the installation base 13 includes an installation base hole 23 formed in an elongated hole shape with the second direction D2 as the longitudinal direction. The installation base hole 23 is aligned with one of the plurality of offset adjustment holes 22a to 22d described above depending on the offset amount. In this state, the installation base 13 is fixed to the guide base 12 using a fixing bolt 17. The fixing bolt 17 passes through the installation base hole 23.

[0034] As shown in FIGS. 2 to 4, the laser emitter 14 is fixed to the installation base 13. The laser emitter 14 is an example of a display. The laser emitter 14 may be in contact with the upper surface of the installation base 13. The laser emitter 14 may be fixed to the installation base 13 by an emitter bolt 24. As shown in FIGS. 2 and 4, the emitter bolt 24 may be threaded into the installation base 13 from the lower surface of the guide base 12, passing through the guide base hole 20 and a hole (not shown) formed in the installation base 13.

[0035] As shown in FIG. 1, the laser emitter 14 displays an adjustment reference indicator on the main sheave 4 for adjusting the central position and inclination of the main sheave 4 in the width direction with reference to the secondary sheave 5. The laser emitter 14 may emit a cross-shaped laser beam L. The cross-shaped laser beam L is composed of a vertical component La and a horizontal component (not shown). Of these, the vertical component La functions as an adjustment reference indicator. Therefore, the laser beam L emitted from the laser emitter 14 does not need to include a horizontal component as long as it includes the vertical component La. The inclination means that the axial direction of the sheaves 4, 5 is inclined with respect to the horizontal line.

[0036] The laser emitter 14 is aligned in the first direction D1 with the above-mentioned installation base hole 23. As a result, the vertical component La of the cross-shaped laser beam L emitted from the laser emitter 14 functions as an adjustment reference indicator for adjusting the central position and inclination of the main sheave 4 in the width direction with respect to the secondary sheave 5.

[0037] The vertical component La of the laser light L emitted from the laser emitter 14 is a linear light extending vertically in a direction perpendicular to the axial direction of the secondary sheave 5. Therefore, when the secondary sheave 5 is tilted, the vertical component La of the laser light L becomes a linear light extending in the same tilted direction. The horizontal component of the laser light L becomes a linear light extending in a direction perpendicular to the vertical component La.

[0038] 2 and 4, the clamping member 15 is capable of abutting against the corresponding side surface of the secondary sheave 5. The clamping member 15 may be formed in an L-shape when viewed from the front. A portion extending in the vertical direction of the clamping member 15 is capable of abutting against the side surface of the secondary sheave 5. A portion extending in the horizontal direction of the clamping member 15 is capable of abutting against the lower surface of the guide base 12.

[0039] The clamping member 15 is attached to the guide base 12 so as to be movable in the first direction D1. More specifically, the clamping member 15 is attached to the guide base 12 by a hanging bolt 25 that passes through a guide base hole 20 of the guide base 12. The hanging bolt 25 is inserted into the guide base hole 20 from above the guide base 12, and the head of the hanging bolt 25 abuts against the upper surface of the guide base 12.

[0040] 4, the clamping member 15 may include a magnet 26. The magnet 26 may be configured so that an attractive force acting on the side surface of the secondary sheave 5 is applied to the clamping member 15.

[0041] As shown in FIGS. 2 and 4 , spring members 16 connect the corresponding clamping members 15 and support bodies 11. One clamping member 15 and support body 11 may be connected by two spring members 16, and the other clamping member 15 and support body 11 may be connected by two spring members 16. When the support body 11 includes a pair of support members 18, each spring member 16 is connected to the corresponding support member 18. The spring members 16 may be configured to function as tension springs when the sheave centering jig 10 is set on the secondary sheave 5. This applies a tensile force to each clamping member 15 in a direction toward the support body 11, allowing the support body 11 to be positioned at a center position between the pair of clamping members 15. Therefore, the support body 11 can be positioned at a center position in the width direction of the secondary sheave 5.

[0042] As shown in FIGS. 3 and 4, the fixing bolt 17 fixes the installation base 13 to the guide base 12. The fixing bolt 17 is an example of a fixing tool. The fixing bolt 17 fixes the installation base 13 to the guide base 12 using one of the plurality of offset adjustment holes 22a to 22d described above. More specifically, the fixing bolt 17 passes through the installation base hole 23 and is inserted and screwed into one of the plurality of offset adjustment holes 22a to 22d described above. The fixing bolt 17 may be a butterfly bolt.

[0043] Next, a sheave centering method will be described, in which the sheave centering jig 10 according to this embodiment having the above-described configuration is used to adjust the centering of the main sheave 4 and the secondary sheave 5. When performing the centering adjustment, the main rope does not need to be wound around either the main sheave 4 or the secondary sheave 5.

[0044] First, the sheave centering jig 10 described above is prepared.

[0045] Next, the support body 11 of the sheave centering jig 10 is positioned at the center position in the width direction of the secondary sheave 5. In this case, first, the support body 11 is abutted against the outer peripheral surface of the secondary sheave 5 from above, and each clamping member 15 is abutted against the corresponding side surface of the secondary sheave 5. As a result, the spring force of the spring members 16 allows the support body 11 and guide table 12 to be positioned at the center position in the width direction of the secondary sheave 5. The guide table 12 can be positioned parallel to the axial direction of the secondary sheave 5, and as a result, the installation table 13 and laser emitter 14 can be positioned parallel to the axial direction of the secondary sheave 5.

[0046] Next, the installation base 13 is fixed to the guide base 12. At this time, the position of the installation base 13 relative to the guide base 12 is adjusted according to the offset amount described above. More specifically, the installation base 13 is moved in the first direction D1 so that one of the plurality of offset adjustment holes 22a to 22d described above and the installation base hole 23 overlap. Then, the fixing bolt 17 is passed through the installation base hole 23 and inserted and screwed into one of the offset adjustment holes 22a to 22d. This allows the installation base 13 to be fixed at a position according to the desired offset amount.

[0047] Next, the laser emitter 14 displays an adjustment reference indicator on the main sheave 4. In this case, the laser emitter 14 emits a cross-shaped laser beam L as an adjustment reference indicator onto the main sheave 4. The vertical component La of the laser beam L is automatically aligned to a position at a desired offset from the center position of the secondary sheave 5 in the width direction. As a result, the vertical component La of the laser beam L displayed on the main sheave 4 indicates a position shifted by the desired offset from the center position of the secondary sheave 5 in the width direction. Furthermore, because the support body 11 abuts against the outer peripheral surface of the secondary sheave 5, the vertical component La of the laser beam L emitted from the laser emitter 14 is perpendicular to the width direction of the secondary sheave 5.

[0048] Next, the widthwise center position and inclination of the main sheave 4 are adjusted based on the adjustment reference display. In this case, it is confirmed whether the vertical component La of the laser light L is parallel to the sheave groove of the main sheave 4. If it is not parallel, the number or thickness of the above-mentioned shims between the hoisting machine 3 and the machine structure 2 is adjusted to adjust the inclination of the main sheave 4. If the vertical component La of the laser light L is misaligned with the widthwise center position of the main sheave 4, the hoisting machine 3 is moved horizontally to adjust the widthwise center position of the main sheave 4.

[0049] After adjusting the center position and inclination of the main sheave 4 in the width direction, the centering operation is completed.

[0050] As described above, according to this embodiment, the installation base 13 is mounted on the guide base 12 so as to be movable in the first direction D1 corresponding to the width direction of the secondary sheave 5. A laser emitter 14 is fixed to the installation base 13, and the laser emitter 14 displays an adjustment reference mark on the main sheave 4 for adjusting the center position and inclination of the main sheave 4 in the width direction with respect to the secondary sheave 5 as a reference. This allows the center position and inclination of the main sheave 4 in the width direction to be adjusted according to the adjustment reference mark displayed by the laser emitter 14. This makes it easy to center the main sheave 4 and the secondary sheave 5. This also reduces the possibility of damage to the main rope or the main sheave 4 and secondary sheave 5 due to the main sheave 4 and secondary sheave 5 tipping over. This also reduces the possibility of problems such as noise or vibration occurring.

[0051] Incidentally, when a plumb line is used in the adjustment work to adjust the widthwise center position and inclination of the main sheave 4, the adjustment work must be performed after waiting for the plumb line to stop swinging, which causes a problem of time-consuming adjustment work. In contrast, according to this embodiment, the adjustment work can be performed using the adjustment reference display displayed by the laser emitter 14, thereby improving the efficiency of the adjustment work.

[0052] Furthermore, depending on the direction in which the main sheave 4 is tilted, the plumb line may come into contact with other structures such as the secondary sheave 5, making the adjustment work difficult. In contrast, according to this embodiment, the adjustment work can be performed using the adjustment reference display displayed by the laser emitter 14, so that the adjustment work can be easily performed even when the main sheave 4 is tilted.

[0053] Furthermore, according to this embodiment, the support 11 can abut against the outer peripheral surface of the secondary sheave 5. This allows the guide base 12 to be arranged parallel to the axial direction of the secondary sheave 5. This improves the accuracy of the adjustment reference display displayed by the laser emitter 14.

[0054] Furthermore, according to this embodiment, clamping member 15 abuts against the corresponding side surface of secondary sheave 5, and clamping member 15 is attached so as to be movable in first direction D1 relative to guide base 12. This allows guide base 12 to be positioned at the center position in the width direction of secondary sheave 5. This improves the accuracy of the adjustment reference display displayed by laser emitter 14.

[0055] Furthermore, according to this embodiment, the corresponding clamping members 15 and support members 11 are connected by spring members 16. This allows a tensile force to be applied to each clamping member 15 in a direction toward the support members 11. Therefore, the support members 11 can be positioned at the center position in the width direction of the secondary sheave 5 by balancing the spring forces of the respective spring members 16, and the accuracy of the adjustment reference display displayed by the laser emitter 14 can be improved.

[0056] Furthermore, according to this embodiment, support body 11 includes magnet 19, and clamping member 15 includes magnet 26. This allows an attractive force to secondary sheave 5 to be applied to support body 11, and also allows an attractive force to secondary sheave 5 to be applied to clamping member 15. This allows sheave centering jig 10 to be firmly fixed to secondary sheave 5, improving the accuracy of the adjustment reference display displayed by laser emitter 14.

[0057] Furthermore, according to this embodiment, the guide base 12 includes a plurality of offset adjustment holes 22a to 22d for adjusting the offset amount between the center position of the secondary sheave 5 and the center position of the main sheave 4. The installation base 13 is fixed to the guide base 12 with fixing bolts 17 using any one of the plurality of offset adjustment holes 22a to 22d. This makes it possible to fix the installation base 13 at a position corresponding to the desired offset amount. Therefore, the adjustment reference display displayed by the laser emitter 14 can be displayed at a position corresponding to the offset amount, and the center position and inclination of the main sheave 4 can be adjusted according to the offset amount.

[0058] Furthermore, according to this embodiment, the multiple offset adjustment holes 22a-22d include a first offset adjustment hole 22a located at the center position in the width direction of the secondary sheave 5 and a pair of second offset adjustment holes 22b located on both sides of the center position in the first direction D1. The second offset adjustment hole 22b is offset from the first offset adjustment hole 22a in a second direction D2 that is perpendicular to the first direction D1 in a plan view. The installation base 13 includes an installation base hole 23 formed in an elongated hole shape with the second direction D2 as its longitudinal direction. As a result, by moving the installation base 13 in the first direction D1, the installation base hole 23 can be aligned with either the first offset adjustment hole 22a or the second offset adjustment hole 22b, and the installation base 13 can be fixed to the guide base 12 with the fixing bolt 17. This allows the position of the installation base 13 to be easily adjusted to a position according to the offset amount.

[0059] In the above-described embodiment, an example has been described in which the secondary sheave 5 is located below the main sheave 4, the secondary sheave 5 corresponds to the first sheave, and the main sheave 4 corresponds to the second sheave. However, the present disclosure is not limited to this. For example, the main sheave 4 may be located below the secondary sheave 5. In this case, the main sheave 4 may correspond to the first sheave, and the secondary sheave 5 may correspond to the second sheave. The support 11 of the sheave centering jig 10 may be abutted against the outer peripheral surface of the main sheave 4, and the clamping member 15 may be abutted against the side surface of the main sheave 4. This allows the centering adjustment of the secondary sheave 5 to be performed using the main sheave 4 as a reference.

[0060] (Second embodiment) Next, a sheave centering jig and a sheave centering method for an elevator hoisting device according to a second embodiment will be described with reference to FIGS. 6 and 7. FIG.

[0061] The second embodiment shown in Figures 6 and 7 is different mainly in that a scale member that can be aligned with each clamping member is placed on a guide table, and other configurations are substantially the same as those of the first embodiment shown in Figures 1 to 5(b). Note that in Figures 6 and 7, the same parts as those of the first embodiment shown in Figures 1 to 5(b) are given the same reference numerals and detailed description thereof will be omitted.

[0062] As shown in FIGS. 6 and 7, the sheave centering jig 10 according to this embodiment may further include a first scale member 30. As shown in FIG.

[0063] The first scale member 30 is placed on the guide table 12. More specifically, with the installation table 13 placed on the guide table 12, the first scale member 30 can be placed on the guide table 12. The first scale member 30 may be formed in a plate shape.

[0064] The first scale member 30 is alignable with each clamping member 15. More specifically, the first scale member 30 includes a pair of fitting notches 31 that can fit onto the suspension bolts 25 for attaching the clamping member 15 to the guide table 12. Each fitting notch 31 can fit onto a corresponding suspension bolt 25. The fitting notch 31 may be formed in a semicircular shape in a plan view on an edge 30a of the first scale member 30. The edge 30a of the first scale member 30 is an edge that is located above the guide table hole 20. The fitting notch 31 may fit onto the body of the suspension bolt 25. In this case, the head of the suspension bolt 25 abuts against the upper surface of the first scale member 30. However, the fitting notch 31 may also fit onto the head of the suspension bolt 25. In this case, the head portion abuts against the upper surface of the guide table 12, and the planar shape of the fitting notch 31 may be a shape that can fit onto the head portion.

[0065] As shown in Fig. 7, the first scale member 30 includes a mounting base notch 32 into which a portion of the mounting base 13 can be inserted. In a plan view, the mounting base notch 32 may be formed to follow the shape of the mounting base 13. In the example shown in Figs. 6 and 7, the mounting base notch 32 is formed in a rectangular shape in a plan view. In the first direction D1, the dimension of the mounting base notch 32 is larger than the dimension of the mounting base 13.

[0066] The installation table cutout 32 may be defined by a pair of stopper portions 33. The stopper portions 33 are located on both sides of the installation table cutout 32 in the first direction D1. The stopper portions 33 are configured to stop the movement of the installation table 13 at the offset amount described above.

[0067] The first scale member 30 may include a center mark 34 that indicates the center position of the secondary sheave 5 in the width direction. As shown in Fig. 7, the center mark 34 may be formed in a linear shape. In the example shown in Fig. 7, the center mark 34 is formed using a dashed line, but the center mark 34 may also be formed using a solid line, and the type of line for the center mark 34 is arbitrary. Alternatively, the center mark 34 is not limited to being formed in a linear shape, and the shape of the center mark 34 is arbitrary as long as it can indicate the center position.

[0068] The first scale member 30 according to this embodiment corresponds to the desired offset amount. More specifically, when the installation base 13 is aligned with the center mark 34, the gap dimension δ between the installation base 13 and the stopper portion 33 is equal to the desired offset amount. The first scale member 30 is formed according to the offset amount between the main sheave 4 and the secondary sheave 5.

[0069] In this embodiment, the guide table 12 does not necessarily have to include the offset adjustment holes 22a to 22d shown in FIG. 5(a).

[0070] A sheave centering method using the sheave centering jig 10 according to this embodiment will be described.

[0071] The support body 11 of the sheave centering jig 10 is positioned at the center position in the width direction of the secondary sheave 5, and each clamping member 15 is abutted against the corresponding side surface of the secondary sheave 5. Thereafter, the fitting notch 31 of the first scale member 30 placed on the guide table 12 is fitted onto the hanging bolt 25.

[0072] Next, the installation base 13 is fixed to the guide base 12. At this time, the installation base 13 is moved in the first direction D1 and abutted against one of the pair of stopper portions 33 of the first scale member 30. Depending on the direction in which the center position of the width direction of the main sheave 4 is shifted from the center position of the width direction of the secondary sheave 5, the installation base 13 is abutted against the corresponding one of the stopper portions 33. With the installation base 13 abutting against the stopper portion 33, the installation base 13 may be fixed to the guide base 12 using bolts (not shown). However, if the installation base 13 does not move, the installation base 13 does not need to be fixed to the guide base 12.

[0073] Thereafter, the laser emitter 14 causes the main sheave 4 to display the adjustment reference display.

[0074] As described above, according to this embodiment, the first scale member 30 is placed on the guide table 12, aligned with each clamping member 15. The first scale member 30 includes a mounting table notch 32 into which a portion of the mounting table 13 can be inserted. The mounting table notch 32 is defined by stopper portions 33 located on both sides of the mounting table notch 32 in the first direction D1. The stopper portions 33 are configured to stop the movement of the mounting table 13 at the above-described offset amount. With the first scale member 30 placed on the guide table 12, the mounting table 13 can be fixed to the guide table 12 at a position corresponding to the desired offset amount by inserting the mounting table 13 into the mounting table notch 32 and abutting against the stopper portions 33. Therefore, the adjustment reference display displayed by the laser emitter 14 can be displayed at a position corresponding to the offset amount, and the center position and inclination of the main sheave 4 can be adjusted according to the offset amount.

[0075] For example, if the inclination of the central axis of the secondary sheave 5 is large, the weight of the support body 11 may cause the center position of the guide table 12 in the first direction D1 to deviate from the center position of the secondary sheave 5 in the width direction. However, even in this case, the first scale member 30 according to this embodiment can be aligned with each clamping member 15. Therefore, the center position of the guide table 12 in the first direction D1 can be aligned with the center position of the secondary sheave 5 in the width direction.

[0076] Furthermore, according to this embodiment, the first scale member 30 includes a center mark 34 that indicates the center position in the width direction of the secondary sheave 5. By checking the center mark 34 of the guide table 12 and the center mark 34 of the first scale member 30, it is possible to confirm whether the center position of the guide table 12 in the first direction D1 coincides with the center position of the secondary sheave 5 in the width direction.

[0077] (Third embodiment) Next, a sheave centering jig and a sheave centering method for an elevator hoisting device according to a third embodiment will be described with reference to FIGS.

[0078] The third embodiment shown in Figures 8 to 10 is different mainly in that the scale member includes a plurality of offset adjustment holes, and other configurations are substantially the same as those of the first embodiment shown in Figures 1 to 5(b). Note that in Figures 8 to 10, the same parts as those of the first embodiment shown in Figures 1 to 5(b) are given the same reference numerals and detailed explanations will be omitted.

[0079] As shown in FIGS. 8 to 10, the sheave centering jig 10 according to this embodiment may further include a second scale member 40 and a fixing bolt 41.

[0080] The second scale member 40 is placed on the guide table 12. The second scale member 40 according to this embodiment is interposed between the guide table 12 and the installation table 13. The installation table 13 is placed on the second scale member 40. The second scale member 40 may be formed in a plate shape.

[0081] The second scale member 40 is alignable with each clamping member 15. More specifically, the second scale member 40 includes a pair of mating notches 42 that can be fitted with the hanging bolts 25 for attaching the clamping members 15 to the guide table 12. Each mating notch 42 can be fitted with a corresponding hanging bolt 25. The mating notches 42 may be formed in an elongated shape extending from the edge 40a of the second scale member 40 in the second direction D2 as its longitudinal direction. The mating notches 42 may be fitted with the body of the hanging bolt 25. In this case, the head of the hanging bolt 25 abuts against the upper surface of the second scale member 40. However, the mating notches 42 may also be fitted with the head of the hanging bolt 25. In this case, the head abuts against the upper surface of the guide table 12, and the planar shape of the mating notches 42 may be such that it can be fitted with the head.

[0082] As shown in FIGS. 8 to 10, the second scale member 40 includes bolt notches 43 into which the light emitter bolts 24 (see FIGS. 2 and 4) can be inserted. The bolt notches 43 may be formed so that the installation base 13 can move in the first direction D1. For example, the bolt notches 43 may have a dimension in the first direction D1 that allows the installation base 13 to move a desired offset amount. The bolt notches 43 may be formed in a rectangular shape in a plan view.

[0083] 9, the second scale member 40 may include a center mark 44 indicating the center position of the secondary sheave 5 in the width direction, and a plurality of offset adjustment holes 45a-45d. The plurality of offset adjustment holes 45a-45d may include a first offset adjustment hole 45a, a pair of second offset adjustment holes 45b, a pair of third offset adjustment holes 45c, and a pair of fourth offset adjustment holes 45d. The center mark 44 and the offset adjustment holes 45a-45d are formed in the same manner as the center mark 21 and the offset adjustment holes 22a-22d shown in FIG. 5(a), and therefore detailed description thereof will be omitted here.

[0084] As shown in Fig. 8, the fixing bolt 41 fixes the installation base 13 to the second scale member 40. The fixing bolt 41 is an example of a fixing tool. The fixing bolt 41 fixes the installation base 13 to the second scale member 40 using any one of the above-mentioned plurality of offset adjustment holes 45a to 45d. More specifically, the fixing bolt 41 passes through the installation base hole 23 and is inserted and screwed into any one of the above-mentioned plurality of offset adjustment holes 45a to 45d. The fixing bolt 41 may be a wing bolt.

[0085] 9 and 10, the second scale member 40 may include a scale 46 along the first direction D1. In this case, the offset amount of the installation table 13 can be confirmed by the scale 46.

[0086] In this embodiment, the guide table 12 does not necessarily have to include the center mark 21 and the offset adjustment holes 22a to 22d shown in FIG. 5(a).

[0087] A sheave centering method using the sheave centering jig 10 according to this embodiment will be described.

[0088] The support body 11 of the sheave centering jig 10 is positioned at the center position in the width direction of the secondary sheave 5, and each clamping member 15 is abutted against the corresponding side surface of the secondary sheave 5. Thereafter, the fitting notch 42 of the second scale member 40 interposed between the guide table 12 and the installation table 13 is fitted onto the hanging bolt 25.

[0089] Next, the installation base 13 is fixed to the second scale member 40. At this time, the position of the installation base 13 relative to the second scale member 40 is adjusted according to the offset amount described above. More specifically, the installation base 13 is moved in the first direction D1 so that one of the plurality of offset adjustment holes 45a to 45d described above and the installation base hole 23 overlap. Then, the fixing bolt 41 is passed through the installation base hole 23 and inserted and screwed into one of the offset adjustment holes 45a to 45d. This allows the installation base 13 to be fixed at a position according to the desired offset amount.

[0090] Thereafter, the laser emitter 14 causes the main sheave 4 to display the adjustment reference display.

[0091] As described above, according to the present embodiment, the second scale member 40 is interposed between the guide table 12 and the installation table 13, and the second scale member 40 includes a plurality of offset adjustment holes 45a to 45d for adjusting the offset amount described above. The installation table 13 is fixed to the second scale member 40 by a fixing bolt 41 using one of the plurality of offset adjustment holes 45a to 45d. This makes it possible to fix the installation table 13 to the second scale member 40 at a position corresponding to the desired offset amount. Therefore, the adjustment reference display displayed by the laser emitter 14 can be displayed at a position corresponding to the offset amount, and the center position and inclination of the main sheave 4 can be adjusted according to the offset amount.

[0092] For example, if the inclination of the central axis of the secondary sheave 5 is large, the weight of the support body 11 may cause the center position of the guide table 12 in the first direction D1 to deviate from the center position of the secondary sheave 5 in the width direction. However, even in this case, the second scale member 40 according to this embodiment can be aligned with each clamping member 15. Therefore, the center position of the guide table 12 in the first direction D1 can be aligned with the center position of the secondary sheave 5 in the width direction.

[0093] Furthermore, according to this embodiment, the second scale member 40 includes the scale 46 along the first direction D1, which makes it possible to easily check the amount of offset of the installation table 13.

[0094] (Fourth embodiment) Next, a sheave centering jig and a sheave centering method for an elevator hoisting device according to a fourth embodiment will be described with reference to FIGS.

[0095] The fourth embodiment shown in Figures 11 and 12 is different mainly in that the sheave centering jig is supported by a mechanical structure, and other configurations are substantially the same as those of the first embodiment shown in Figures 1 to 5(b). In Figures 11 and 12, the same parts as those of the first embodiment shown in Figures 1 to 5(b) are given the same reference numerals and detailed explanations will be omitted.

[0096] As shown in Figures 11 and 12, the sheave centering jig 10 according to this embodiment is supported by the first machine base 6 and the second machine base 7 of the machine structure 2. A guide base 12 may be placed on the first machine base 6 and the second machine base 7. The first machine base 6 and the second machine base 7 are each made of an I-beam. In this case, the guide base 12 is placed on the lower flange 6a of the first machine base 6 and the lower flange 7a of the second machine base 7. The sheave centering jig 10 is arranged so that the first direction D1 of the sheave centering jig 10 is aligned with the width direction of the secondary sheave 5.

[0097] In the sheave centering method according to this embodiment, first, the sheave centering jig 10 is prepared. The guide table 12 of the sheave centering jig 10 may be supported by the first machine table 6 and the second machine table 7. Next, the position of the guide table 12 may be adjusted so that it is located at the center position in the width direction of the secondary sheave 5. Then, the position of the installation table 13 relative to the guide table 12 may be adjusted according to the desired offset amount, and the installation table 13 may be fixed to the guide table 12. Thereafter, the laser emitter 14 may display an adjustment reference display on the main sheave 4. If the centering method according to this embodiment can be performed even when the main rope is wound around the main sheave 4 and the secondary sheave 5, the main rope may be wound around these sheaves 4, 5.

[0098] As described above, according to this embodiment, the installation base 13 is mounted on the guide base 12 so as to be movable in the first direction D1 corresponding to the width direction of the secondary sheave 5. A laser emitter 14 is fixed to the installation base 13, and the laser emitter 14 displays an adjustment reference mark on the main sheave 4 for adjusting the center position and inclination of the main sheave 4 in the width direction with respect to the secondary sheave 5 as a reference. This allows the center position and inclination of the main sheave 4 in the width direction to be adjusted according to the adjustment reference mark displayed by the laser emitter 14. This makes it easy to center the main sheave 4 and the secondary sheave 5. This also reduces the possibility of damage to the main rope or the main sheave 4 and secondary sheave 5 due to the main sheave 4 and secondary sheave 5 tipping over. This also reduces the possibility of problems such as noise or vibration occurring.

[0099] According to the embodiment described above, the sheaves 4, 5 of the elevator hoisting device 1 can be easily centered.

[0100] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the inventions and their equivalents as defined in the claims. [Explanation of symbols]

[0101] 1: hoisting device, 4: main sheave, 5: secondary sheave, 10: sheave centering jig, 11: support, 12: guide table, 13: installation table, 14: laser emitter, 15: clamping member, 16: spring member, 19: magnet, 22a: first offset adjustment hole, 22b: second offset adjustment hole, 22c: third offset adjustment hole, 22d: fourth offset adjustment hole, 23: installation table hole, 26: magnet, 30: first scale member, 32: installation table notch, 33: stopper portion, 34: center mark, 40: second scale member, 44: center mark, 45a: first offset adjustment hole, 45b: second offset adjustment hole, 45c: third offset adjustment hole, 45d: fourth offset adjustment hole, D1: first direction, D2: second direction

Claims

1. A sheave centering jig for adjusting the centering of a first sheave and a second sheave that constitute an elevator hoisting device, Information desk and an installation base attached to the guide base so as to be movable in a first direction corresponding to the width direction of the first sheave; a display fixed to the installation base; Equipped with The indicator displays an adjustment reference indicator on the second sheave for adjusting the center position and inclination of the second sheave in the width direction with respect to the first sheave. Sheave centering jig for elevator hoisting devices.

2. Further provided is a support body that can contact the outer peripheral surface of the first sheave, The guide table is fixed to the support. The sheave centering jig for an elevator hoisting device according to claim 1.

3. a pair of clamping members that can contact corresponding side surfaces of the first sheave; The clamping member is attached to the guide table so as to be movable in the first direction. The sheave centering jig for an elevator hoisting device according to claim 2.

4. Further provided is a pair of spring members connecting the corresponding clamping members and the support members, The sheave centering jig for an elevator hoisting device according to claim 3.

5. the support and the clamping member each include a magnet; The sheave centering jig for an elevator hoisting device according to claim 3 or 4.

6. Further provided is a fixing device for fixing the installation table to the guide table, the guide base includes a plurality of offset adjustment holes for adjusting an offset amount between a center position of the first sheave in a width direction and a center position of the second sheave in a width direction, the fixing device fixes the installation table to the guide table using any one of the plurality of offset adjustment holes. The sheave centering jig for an elevator hoisting device according to any one of claims 1 to 4.

7. the plurality of offset adjustment holes include a first offset adjustment hole and a pair of second offset adjustment holes located on both sides of the first offset adjustment hole in the first direction, the second offset adjustment hole is deviated from the first offset adjustment hole in a second direction perpendicular to the first direction in a plan view, the installation base includes an installation base hole formed in an elongated hole shape with the second direction as a longitudinal direction, the installation base hole through which the fixing device passes; The sheave centering jig for an elevator hoisting device according to claim 6.

8. a first scale member placed on the guide table and alignable with each of the clamping members; the first scale member includes an installation base notch into which a part of the installation base can be inserted, In the first direction, a dimension of the installation base notch is larger than a dimension of the installation base, the installation base notch is defined by stopper portions located on both sides of the installation base notch in the first direction, The stopper portion is configured to stop the movement of the installation table at an offset amount between the center position of the first sheave in the width direction and the center position of the second sheave in the width direction. The sheave centering jig for an elevator hoisting device according to claim 3 or 4.

9. the first scale member includes a center mark indicating the center position of the first sheave in the width direction, The sheave centering jig for an elevator hoisting device according to claim 8.

10. a second scale member interposed between the guide table and the installation table and capable of being aligned with each of the clamping members; a fixture that fixes the installation base to the second scale member, the second scale member includes a plurality of offset adjustment holes for adjusting an offset amount between a center position in the width direction of the first sheave and a center position in the width direction of the second sheave, the fixing device fixes the installation base to the second scale member using any one of the plurality of offset adjustment holes. The sheave centering jig for an elevator hoisting device according to claim 3 or 4.

11. the second scale member includes a scale along the first direction; The sheave centering jig for an elevator hoisting device according to claim 10.

12. A sheave centering method for adjusting the centering of a first sheave and a second sheave that constitute an elevator hoisting device, comprising: A step of preparing a sheave centering jig for an elevator hoisting device according to claim 1; a step of disposing the guide table at a center position in a width direction of the first sheave; adjusting the position of the installation base relative to the guide base in accordance with an offset amount between a center position of the first sheave in the width direction and a center position of the second sheave in the width direction, and fixing the installation base to the guide base; displaying the adjustment reference indication on the second sheave from the indicator; adjusting a center position and an inclination of the second sheave in a width direction based on the adjustment reference indication; Equipped with A method for centering a sheave in an elevator hoisting device.

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