Sheave centering jig and sheave centering method for elevator hoisting equipment

Abstract

To provide a sheave alignment jig for an elevator hoisting machine that facilitates the alignment of the sheaves of the elevator hoisting device. [Solution] The sheave centering jig for the elevator hoisting device according to this embodiment comprises a guide base, an installation base mounted on the guide base so as to be movable in a first direction corresponding to the width direction of the first sheave, and a display unit fixed to the installation base. The display unit 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.

Description

Technical Field

[0007] , , ,

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

Background Art

[0002] A hoisting machine for raising and lowering an elevator car may be installed in a machine room provided at the upper part of a hoistway. The hoisting machine is installed on the floor of the machine room via a machine structure composed of a plurality of steel sections.

[0003] A main sheave around which a main rope is wound is connected to the hoisting machine. A secondary sheave around which the main rope is wound is installed in the machine structure. The secondary sheave is also referred to as a deflecting sheave.

[0004] In order to prevent the vibration of the hoisting machine, the main sheave and the secondary sheave from propagating to the building, an elastic body such as rubber is used. The elastic body is interposed, for example, between the steel sections constituting the machine structure.

[0005] Due to the deflection of the elastic body or the deformation of the machine structure, the main sheave and the secondary sheave may be inclined. If the degree of inclination is large, the main rope may be damaged, or the main sheave and the secondary sheave may be damaged. In addition, problems such as noise or vibration may occur. Therefore, adjustment may be performed to correct the inclination of the main sheave and the secondary sheave.

[0006] Such adjustment can be performed, for example, by hanging a lowering cord from the main sheave. In this case, the inclination 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 Publication No. 2017-206370 [Overview of the project] [Problems that the invention aims to solve]

[0008] The embodiment aims to provide a sheave alignment jig and sheave alignment method for an elevator hoisting machine that can easily center the sheaves of the elevator hoisting device. [Means for solving the problem]

[0009] The embodiment is a sheave alignment jig for adjusting the centering of a first sheave and a second sheave that constitute an elevator hoisting device. The sheave alignment jig comprises a guide base, a mounting base that is movable in a first direction corresponding to the width direction of the first sheave and attached to the guide base, and a display unit fixed to the mounting base. The display unit 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.

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

[0011] [Figure 1] Figure 1 is a perspective view showing a hoisting device with a sheave centering jig according to the first embodiment. [Figure 2]Figure 2 is a perspective view showing the sheave alignment jig shown in Figure 1. [Figure 3] Figure 3 is a plan view of the sheave centering jig shown in Figure 2. [Figure 4] Figure 4 is a front view of the sheave centering jig shown in Figure 2. [Figure 5] Figure 5(a) is a plan view showing the guide base shown in Figure 2, and Figure 5(b) is an enlarged plan view showing the offset adjustment hole shown in Figure 5(a). [Figure 6] Figure 6 is a perspective view showing a sheave centering jig according to the second embodiment. [Figure 7] Figure 7 is a plan view showing the sheave centering jig shown in Figure 6. [Figure 8] Figure 8 is a perspective view showing a sheave centering jig according to a third embodiment. [Figure 9] Figure 9 is a plan view showing the second scale member shown in Figure 8. [Figure 10] Figure 10 is a plan view of the sheave centering jig shown in Figure 8. [Figure 11] Figure 11 is a perspective view showing a hoisting device with a sheave alignment jig according to the fourth embodiment. [Figure 12] Figure 12 is a perspective view showing the sheave alignment jig shown in Figure 11. [Modes for carrying out the invention]

[0012] The sheave alignment jig for an elevator hoisting device according to the first embodiment will be described below with reference to the drawings.

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

[0014] As shown in FIG. 1, a hoisting device 1 is installed in the 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 composed of a plurality of section steels. The machine structure 2 may include an elastic body (not shown), such as rubber, for preventing the vibrations of the hoisting machine 3, the main sheave 4, and the secondary sheave 5 from propagating to the building. In FIG. 1, two of the plurality of section steels are shown as the first machine base 6 and the second machine base 7.

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

[0017] The main sheave 4 is connected to the shaft (not shown) of the hoisting machine 3. The secondary sheave 5 is located below the main sheave 4 and is rotatably supported by the first machine base 6 and the second machine base 7. The main sheave 4 and the secondary sheave 5 are arranged such 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 coincide, or may be offset in the width direction by a desired offset amount. In the example shown in FIG. 1, the main sheave 4 and the secondary sheave 5 are located between the first machine base 6 and the second machine base 7 when viewed from above or below.

[0018] Next, the sheave alignment jig (hereinafter referred to as the sheave alignment jig 10) for the elevator hoisting device 1 according to this embodiment will be described. The sheave alignment jig 10 is a jig for adjusting the alignment of the main sheave 4 and secondary sheave 5 that constitute the hoisting device 1 described above. In this embodiment, an example of adjusting the alignment of the main sheave 4 using the secondary sheave 5 as a reference will be described. 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 Figure 2, the sheave centering jig 10 according to this embodiment may include a support 11, a guide base 12, a mounting base 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 11 is capable of contacting the outer circumferential surface of the secondary sheave 5 from above. The support 11 may include a pair of support members 18. In Figure 2, a support member 18 located on the front side is shown, but a support member 18 is also positioned on the back side.

[0021] Each support member 18 includes a contact surface that contacts the outer circumferential surface of the secondary sheave 5. The contact surface may have a width dimension that allows it to contact the outer circumferential surface across multiple sheave grooves of the secondary sheave 5. This allows the guide base 12 to be positioned parallel to the axial direction of the secondary sheave 5. The contact surface may be a horizontal surface, an inclined surface, or a curved surface, and is arbitrary. The contact surface may also 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 later, and do not have to overlap the guide base hole 20 described later in a plan view. Each support member 18 may be spaced apart from the guide base hole 20.

[0022] As shown in Figure 4, the support 11 may include a magnet 19. If the support 11 includes a pair of support members 18, each support member 18 may include a magnet 19. The magnet 19 may be configured such that when the support 11 is brought into contact with the outer surface of the secondary sheave 5, an attractive force is applied to the support 11 for the secondary sheave 5.

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

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

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

[0026] The center mark 21 may be formed in a straight line. In the example shown in Figure 5(a), an example of a center mark 21 formed by a dashed line is shown, but the center mark 21 may also be formed by a solid line, and the line type of the center mark 21 is arbitrary. Alternatively, the center mark 21 is not limited to being formed in a straight line, and the shape of the center mark 21 is arbitrary as long as it can indicate the center position. In this embodiment, the center mark 21 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 later.

[0027] The multiple offset adjustment holes 22a to 22d are holes for adjusting the amount of offset between the widthwise center position of the secondary sheave 5 and the widthwise center position of the main sheave 4. The guide base 12 may be able to accommodate multiple offset amounts. The guide base 12 shown in Figure 5(b) is configured to accommodate seven different offset amounts. The multiple 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 screw 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, i.e., 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 hole 22b is located on both sides of the first direction D1 relative to the first offset adjustment hole 22a. The second offset adjustment hole 22b is offset relative to the first offset adjustment hole 22a in the second direction D2, which is perpendicular to the first direction D1 in a plan view. The second offset adjustment hole 22b is used when the offset amount is the first offset amount. Either of the second offset adjustment holes 22b is used depending on the direction in which the center position in the width direction of the main sheave 4 is offset relative to the center position in the width direction of the secondary sheave 5.

[0030] The third offset adjustment hole 22c is located on both sides of the first offset adjustment hole 22a in the first direction D1. In the second direction D2, the third offset adjustment hole 22c is offset from the first offset adjustment hole 22a. In both the first direction D1 and the second direction D2, the third offset adjustment hole 22c is offset from the second offset adjustment hole 22b. 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. Depending on the direction in which the widthwise center position of the main sheave 4 is offset from the widthwise center position of the secondary sheave 5, one of the third offset adjustment holes 22c is used.

[0031] The fourth offset adjustment hole 22d is located on both sides of the first offset adjustment hole 22a in the first direction D1. In the second direction D2, the fourth offset adjustment hole 22d is offset from the first offset adjustment hole 22a. 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 also 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. Depending on the direction in which the widthwise center position of the main sheave 4 is offset from the widthwise center position of the secondary sheave 5, one of the fourth offset adjustment holes 22d is used.

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

[0033] As shown in Figure 3, the mounting base 13 includes a mounting base hole 23 formed in an elongated shape with the second direction D2 as the longitudinal direction. The mounting base hole 23 is aligned with one of the above-mentioned offset adjustment holes 22a to 22d, depending on the offset amount. In this state, the mounting base 13 is fixed to the guide base 12 using fixing bolts 17. The fixing bolts 17 pass through the mounting base hole 23.

[0034] As shown in Figures 2 to 4, the laser emitter 14 is fixed to the mounting base 13. The laser emitter 14 is an example of a display unit. The laser emitter 14 may be in contact with the upper surface of the mounting base 13. The laser emitter 14 may be fixed to the mounting base 13 with emitter bolts 24. As shown in Figures 2 and 4, the emitter bolts 24 may be screwed into the mounting 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 mounting base 13.

[0035] As shown in Figure 1, the laser emitter 14 displays an adjustment reference indicator on the main sheave 4 for adjusting the widthwise center position and inclination of the main sheave 4 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 has the function of 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. Inclination means that the axial direction of the sheaves 4 and 5 is inclined with respect to the horizontal line.

[0036] The laser emitter 14 is aligned with the mounting base hole 23 described above in the first direction D1. 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 widthwise center position and tilt of the main sheave 4 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 beam of light extending vertically in a direction perpendicular to the axis of the secondary sieve 5. Therefore, if the secondary sieve 5 is tilted, the vertical component La of the laser light L will similarly become a linear beam of light extending in the direction of the tilt. The horizontal component of the laser light L will become a linear beam of light extending in a direction perpendicular to the vertical component La.

[0038] As shown in Figures 2 and 4, the clamping member 15 is capable of contacting 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. The portion of the clamping member 15 extending in the vertical direction is capable of contacting the side surface of the secondary sheave 5. The portion of the clamping member 15 extending in the horizontal direction is capable of contacting 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 a first direction D1. More specifically, the clamping member 15 is attached to the guide base 12 by a suspension bolt 25 that passes through the guide base hole 20 of the guide base 12. The suspension bolt 25 is inserted into the guide base hole 20 from above the guide base 12, and the head of the suspension bolt 25 is in contact with the upper surface of the guide base 12.

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

[0041] As shown in Figures 2 and 4, the spring members 16 connect the corresponding clamping members 15 and the support 11. One clamping member 15 and the support 11 may be connected by two spring members 16, and the other clamping member 15 and the support 11 may be connected by two spring members 16. If the support 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 the direction toward the support 11, allowing the support 11 to be positioned at the center between the pair of clamping members 15. Therefore, the support 11 can be positioned at the center in the width direction of the secondary sheave 5.

[0042] As shown in Figures 3 and 4, the fixing bolt 17 secures the mounting base 13 to the guide base 12. The fixing bolt 17 is an example of a fastener. The fixing bolt 17 secures the mounting base 13 to the guide base 12 using one of the above-described offset adjustment holes 22a to 22d. More specifically, the fixing bolt 17 passes through the mounting base hole 23 and is inserted into and screwed into one of the above-described offset adjustment holes 22a to 22d. The fixing bolt 17 may also be a wing bolt.

[0043] Next, a sheave alignment method will be described for adjusting the alignment of the main sheave 4 and secondary sheave 5 using the sheave alignment jig 10 according to this embodiment, which has the configuration described above. When performing alignment adjustment, the main rope does not need to be wrapped around either the main sheave 4 or the secondary sheave 5.

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

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

[0046] Next, the mounting base 13 is fixed to the guide base 12. At this time, the position of the mounting base 13 relative to the guide base 12 is adjusted according to the offset amount described above. More specifically, the mounting base 13 is moved in the first direction D1 so that the mounting base hole 23 aligns with one of the multiple offset adjustment holes 22a to 22d described above. Then, the fixing bolt 17 is passed through the mounting base hole 23 and inserted into one of the offset adjustment holes 22a to 22d and screwed in. This makes it possible to fix the mounting base 13 in a position corresponding 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 on the main sheave 4. The vertical component La of the laser beam L is automatically aligned to a position with a desired offset amount relative to the center position in the width direction of the secondary sheave 5. As a result, the vertical component La of the laser beam L displayed on the main sheave 4 indicates a position shifted by a desired offset amount relative to the center position in the width direction of the secondary sheave 5. Furthermore, because the support 11 is in contact with the outer circumferential 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 checked whether the longitudinal component La of the laser beam L is parallel to the sheave groove of the main sheave 4. If they are not parallel, the number or thickness of the shims between the hoisting machine 3 and the machine structure 2 are adjusted to adjust the inclination of the main sheave 4. If the widthwise center position of the main sheave 4 is misaligned with the longitudinal component La of the laser beam L, the hoisting machine 3 is moved horizontally to adjust the widthwise center position of the main sheave 4.

[0049] After adjusting the widthwise center position and tilt of the main sheave 4, the alignment process is complete.

[0050] As described above, according to this embodiment, a mounting base 13 is attached to the guide base 12 so as to be movable in a first direction D1 corresponding to the width direction of the secondary sheave 5. A laser emitter 14 is fixed to the mounting base 13, and the laser emitter 14 displays an adjustment reference indicator on the main sheave 4 for adjusting the width direction center position and inclination of the main sheave 4 with respect to the secondary sheave 5. As a result, the width direction center position and inclination of the main sheave 4 can be adjusted according to the adjustment reference indicator displayed by the laser emitter 14. Therefore, the main sheave 4 and secondary sheave 5 can be easily centered. In addition, the possibility of the main rope being damaged or the main sheave 4 and secondary sheave 5 being damaged due to the main sheave 4 and secondary sheave 5 falling over can be reduced. Furthermore, the possibility of malfunctions such as noise or vibration can also be reduced.

[0051] Incidentally, when using a plumb bob to adjust the widthwise center position and tilt of the main sheave 4, the adjustment work is time-consuming because the adjustment work must be performed only after waiting for the plumb bob to stop swinging. In contrast, according to this embodiment, the adjustment work can be performed using the adjustment reference display shown from 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 bob string may come into contact with other structures such as the secondary sheave 5, which could make adjustment work difficult. In contrast, according to this embodiment, since adjustment work can be performed using the adjustment reference display shown from the laser emitter 14, adjustment work can be easily performed even when the main sheave 4 is tilted.

[0053] Furthermore, according to this embodiment, the support 11 can contact the outer circumferential surface of the secondary sheave 5. This allows the guide base 12 to be positioned parallel to the axial direction of the secondary sheave 5. As a result, the accuracy of the adjustment reference display shown by the laser emitter 14 can be improved.

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

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

[0056] Furthermore, according to this embodiment, the support 11 includes a magnet 19, and the clamping member 15 includes a magnet 26. This allows the support 11 to apply an attractive force to the secondary sheave 5, and the clamping member 15 to apply an attractive force to the secondary sheave 5. As a result, the sheave alignment jig 10 can be firmly fixed to the secondary sheave 5, and the accuracy of the adjustment reference display shown by the laser emitter 14 can be improved.

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

[0058] Furthermore, according to this embodiment, the plurality of offset adjustment holes 22a to 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 first direction D1 with respect to the center position. The second offset adjustment holes 22b are offset from the first offset adjustment hole 22a in the second direction D2 which is perpendicular to the first direction D1 in a plan view. The mounting base 13 includes a mounting base hole 23 formed in the shape of an elongated hole with the second direction D2 as its longitudinal direction. As a result, by moving the mounting base 13 in the first direction D1, the mounting base hole 23 can be aligned with either the first offset adjustment hole 22a or the second offset adjustment hole 22b, and the mounting base 13 can be fixed to the guide base 12 with fixing bolts 17. Therefore, the position of the mounting base 13 can be easily adjusted to a position corresponding to the amount of offset.

[0059] In the embodiment described above, an example was 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, this 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 brought into contact with the outer circumferential surface of the main sheave 4, and the clamping member 15 may be brought into contact with the side surface of the main sheave 4. This makes it possible to adjust the centering of the secondary sheave 5 with respect to the main sheave 4.

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

[0061] In the second embodiment shown in Figures 6 and 7, the main difference is that a scale member that can be aligned with each clamping member is placed on the guide base; the other configurations are substantially the same as those of the first embodiment shown in Figures 1 to 5(b). In Figures 6 and 7, the same reference numerals are used for parts that are the same as those in the first embodiment shown in Figures 1 to 5(b), and detailed descriptions are omitted.

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

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

[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 be fitted onto suspension bolts 25 for attaching the clamping members 15 to the guide base 12. Each fitting notch 31 is alignable with the corresponding suspension bolt 25. The fitting notches 31 may be formed in a semicircular shape in plan view on the edge 30a of the first scale member 30. The edge 30a of the first scale member 30 is the edge located on the guide base hole 20. The fitting notches 31 may be fitted 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 notches 31 may be fitted onto the head of the suspension bolt 25. In this case, the head portion abuts against the upper surface of the guide base 12, and the planar shape of the fitting notch 31 may be such that it can be fitted into the head portion.

[0065] As shown in Figure 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 plan view, the mounting base notch 32 may be formed to conform to the shape of the mounting base 13. In the examples shown in Figures 6 and 7, the mounting base notch 32 is formed in a rectangular shape in plan view. In the first direction D1, the dimensions of the mounting base notch 32 are larger than the dimensions of the mounting base 13.

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

[0067] The first scale member 30 may include a center mark 34 indicating the center position in the width direction of the secondary sheave 5. As shown in Figure 7, the center mark 34 may be formed in a straight line. In the example shown in Figure 7, an example of a center mark 34 formed with a dashed line is shown, but the center mark 34 may also be formed with a solid line, and the line type of the center mark 34 is arbitrary. Alternatively, the center mark 34 is not limited to being formed in a straight line, 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 in this embodiment corresponds to a desired offset amount. More specifically, with the mounting base 13 aligned with the center mark 34, the gap dimension δ between the mounting 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 of the main sheave 4 and the secondary sheave 5.

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

[0070] A sheave alignment method using the sheave alignment 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 of the width direction of the secondary sheave 5, and each clamping member 15 is brought into contact with the corresponding side surface of the secondary sheave 5. Then, the fitting notch 31 of the first scale member 30, which is placed on the guide base 12, is fitted onto the suspension bolt 25.

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

[0073] Subsequently, the adjustment reference indicator is displayed on the main sheave 4 from the laser emitter 14.

[0074] As described above, according to this embodiment, a first scale member 30, aligned with each clamping member 15, is placed on the guide base 12. The first scale member 30 includes a mounting base notch 32 into which a part of the mounting base 13 can be inserted. The mounting base notch 32 is defined by stopper portions 33 located on both sides of the mounting base notch 32 in the first direction D1. The stopper portions 33 are configured to stop the movement of the mounting base 13 at the offset amount described above. As a result, with the first scale member 30 placed on the guide base 12, the mounting base 13 can be fixed to the guide base 12 at a position corresponding to the desired offset amount by inserting the mounting base 13 into the mounting base notch 32 and bringing it into contact with the stopper portions 33. Therefore, the adjustment reference display shown 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 center position of the guide base 12 in the first direction D1 may shift from the center position of the secondary sheave 5 in the width direction due to the influence of the weight of the support 11. 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 base 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 indicating the center position in the width direction of the secondary sheave 5. By checking the center mark 34 of the guide base 12 and the center mark 34 of the first scale member 30, it is possible to confirm whether the center position in the first direction D1 of the guide base 12 coincides with the center position in the width direction of the secondary sheave 5.

[0077] (Third embodiment) Next, a sheave alignment jig and sheave alignment method for an elevator hoisting device according to a third embodiment will be described using Figures 8 to 10.

[0078] In the third embodiment shown in Figures 8 to 10, the main difference is that the scale member includes multiple offset adjustment holes; other configurations are substantially the same as those of the first embodiment shown in Figures 1 to 5(b). In Figures 8 to 10, the same reference numerals are used for parts identical to those in the first embodiment shown in Figures 1 to 5(b), and detailed descriptions are omitted.

[0079] As shown in Figures 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 base 12. In this embodiment, the second scale member 40 is interposed between the guide base 12 and the mounting base 13. The mounting base 13 is placed on the second scale member 40. The second scale member 40 may be formed in the shape of a plate.

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

[0082] As shown in Figures 8 to 10, the second scale member 40 includes a bolt notch 43 into which the light-emitting bolt 24 (see Figures 2 and 4) can be inserted. The bolt notch 43 may be formed so that the mounting base 13 can move in a first direction D1. For example, the bolt notch 43 may have dimensions in the first direction D1 such that the mounting base 13 can move by a desired offset amount. The bolt notch 43 may be formed in a rectangular shape in plan view.

[0083] As shown in Figure 9, the second scale member 40 may include a center mark 44 indicating the widthwise center position of the secondary sheave 5, and a plurality of offset adjustment holes 45a to 45d. The plurality of offset adjustment holes 45a to 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 to 45d are formed in the same way as the center mark 21 and offset adjustment holes 22a to 22d shown in Figure 5(a), so a detailed explanation is omitted here.

[0084] As shown in Figure 8, the fixing bolt 41 secures the mounting base 13 to the second scale member 40. The fixing bolt 41 is an example of a fastener. The fixing bolt 41 secures the mounting base 13 to the second scale member 40 using one of the multiple offset adjustment holes 45a to 45d described above. More specifically, the fixing bolt 41 passes through the mounting base hole 23 and is inserted into and screwed into one of the multiple offset adjustment holes 45a to 45d described above. The fixing bolt 41 may also be a wing bolt.

[0085] As shown in Figures 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 mounting base 13 can be confirmed using the scale 46.

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

[0087] A sheave alignment method using the sheave alignment 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 of the secondary sheave 5 in the width direction, and each clamping member 15 is brought into contact with the corresponding side surface of the secondary sheave 5. Then, the fitting notch 42 of the second scale member 40 interposed between the guide base 12 and the mounting base 13 is fitted onto the suspension bolt 25.

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

[0090] Subsequently, the adjustment reference indicator is displayed on the main sheave 4 from the laser emitter 14.

[0091] As described above, according to this embodiment, a second scale member 40 is interposed between the guide base 12 and the mounting base 13, and the second scale member 40 includes a plurality of offset adjustment holes 45a to 45d for adjusting the offset amount described above. A fixing bolt 41 fixes the mounting base 13 to the second scale member 40 using one of the plurality of offset adjustment holes 45a to 45d. This makes it possible to fix the mounting base 13 to the second scale member 40 at a position corresponding to the desired offset amount. Therefore, the adjustment reference display shown 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 center position of the guide base 12 in the first direction D1 may shift from the center position of the secondary sheave 5 in the width direction due to the influence of the weight of the support 11. 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 base 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 a scale 46 along the first direction D1. This makes it easy to check the offset amount of the mounting base 13.

[0094] (Fourth embodiment) Next, with reference to Figures 11 and 12, a sheave alignment jig and sheave alignment method for an elevator hoisting device according to a fourth embodiment will be described.

[0095] In the fourth embodiment shown in Figures 11 and 12, the main difference is that the sheave centering jig is supported by the mechanical structure; 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 reference numerals are used for parts identical to those in the first embodiment shown in Figures 1 to 5(b), and detailed descriptions are omitted.

[0096] As shown in Figures 11 and 12, the sheave alignment 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. The guide base 12 may also 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 I-beams. 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 alignment jig 10 is positioned such that its first direction D1 is along the width direction of the secondary sheave 5.

[0097] In the sheave alignment method according to this embodiment, first, a sheave alignment jig 10 is prepared. The guide base 12 of the sheave alignment jig 10 may be supported by the first machine base 6 and the second machine base 7. Next, the position of the guide base 12 may be adjusted so that it is positioned at the center of the width direction of the secondary sheave 5. Then, the position of the mounting base 13 relative to the guide base 12 may be adjusted according to the desired offset amount, and the mounting base 13 may be fixed to the guide base 12. After that, the adjustment reference display may be displayed on the main sheave 4 from the laser emitter 14. If the alignment 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, then the main rope may be wound around these sheaves 4 and 5.

[0098] As described above, according to this embodiment, a mounting base 13 is attached to the guide base 12 so as to be movable in a first direction D1 corresponding to the width direction of the secondary sheave 5. A laser emitter 14 is fixed to the mounting base 13, and the laser emitter 14 displays an adjustment reference indicator on the main sheave 4 for adjusting the width direction center position and inclination of the main sheave 4 with respect to the secondary sheave 5. As a result, the width direction center position and inclination of the main sheave 4 can be adjusted according to the adjustment reference indicator displayed by the laser emitter 14. Therefore, the main sheave 4 and secondary sheave 5 can be easily centered. In addition, the possibility of the main rope being damaged or the main sheave 4 and secondary sheave 5 being damaged due to the main sheave 4 and secondary sheave 5 falling over can be reduced. Furthermore, the possibility of malfunctions such as noise or vibration can also be reduced.

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

[0100] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be implemented in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims and their equivalents. [Explanation of Symbols]

[0101] 1: Hoisting device, 4: Main sheave, 5: Secondary sheave, 10: Sheave centering jig, 11: Support, 12: Guide base, 13: Mounting base, 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: Mounting base hole, 26: Magnet, 30: First scale member, 32: Mounting base notch, 33: Stopper part, 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 alignment jig for adjusting the alignment of the first and second sheaves that constitute an elevator hoisting device, An information desk and The guide base is provided with an installation base that is movable in a first direction corresponding to the width direction of the first sheave, A display unit fixed to the aforementioned mounting base, Equipped with, The display unit 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 alignment jig for elevator hoisting equipment.

2. The first sheave further comprises a support that can contact the outer circumferential surface, The guide stand is fixed to the support, A sheave centering jig for an elevator hoisting device according to claim 1.

3. The first sheave further comprises a pair of clamping members that can contact the corresponding side surfaces of the first sheave, The clamping member is mounted to the guide base so as to be movable in the first direction. The sheave alignment jig for the elevator hoisting device according to claim 2.

4. The device further comprises a pair of spring members connecting the corresponding clamping member and the support, Sheave centering jig for elevator hoisting device according to claim 3.

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

6. The mounting base is further provided with a fixing device for fixing it to the guide base, The guide base includes a plurality of offset adjustment holes for adjusting the amount of offset between the widthwise center position of the first sheave and the widthwise center position of the second sheave. The fixing device secures the mounting base to the guide base using one of the multiple offset adjustment holes. A 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 offset from the first offset adjustment hole in a second direction perpendicular to the first direction in a plan view. The mounting base has a mounting base hole formed in an elongated shape with the second direction as the longitudinal direction, and includes a mounting base hole through which the fixing device passes. The sheave centering jig for the elevator hoisting device according to claim 6.

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

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

10. A second scale member, which is alignable with each of the clamping members, is interposed between the guide base and the mounting base. The mounting base is further provided with a fixing device for fixing it to the second scale member, The second scale member includes a plurality of offset adjustment holes for adjusting the amount of offset between the widthwise center position of the first sheave and the widthwise center position of the second sheave. The fixing device secures the mounting base to the second scale member using one of the multiple offset adjustment holes. Sheave centering jig for elevator hoisting device according to claim 3 or 4.

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

12. A sheave alignment method for adjusting the alignment of a first sheave and a second sheave that constitute an elevator hoisting device, A step of preparing the sheave centering jig for the elevator hoisting device described in claim 1, The steps include: positioning the guide base at the center of the width direction of the first sheave; The steps include adjusting the position of the mounting base relative to the guide base according to the offset amount between the widthwise center position of the first sheave and the widthwise center position of the second sheave, and fixing the mounting base to the guide base, A step of displaying the adjustment reference indicator on the second sheave from the indicator, A step of adjusting the center position and inclination in the width direction of the second sheave based on the adjustment reference indication, Equipped with, Method for centering the sheaves of an elevator hoisting device.

Images