Elevator and method for lifting hoist

Abstract

To provide an elevator which can accurately manage a fixed position of a suspension tool and does not need much position adjustment time when a hoist of the elevator is lifted.SOLUTION: Suspension tools 42 and 43 for lifting the hoist of the elevator are provided in two guide rails 19 and 20 centered in a hoistway 12. Providing the suspension tools 42 and 43 in the centered guide rails 19 and 20 enables accurate management of the fixed positions of the suspension tools and elimination of the necessity of much position adjustment time for hoist installation work.SELECTED DRAWING: Figure 9

Description

[Technical field]

[0001] The present invention relates to an elevator for transporting passengers and baggage between different floors, and more particularly to an elevator equipped with a lifting mechanism suitable for installing an elevator hoist, and a method for lifting the hoist. [Background technology]

[0002] In a typical machine-room-less elevator, for example, when installing a hoist, a hook at one end of a chain block is engaged with a suspension device such as an anchor bolt installed in the ceiling wall of the elevator shaft, and the hook at the other end of the chain block is then engaged with the engagement part of the hoist, and in this state the chain block is operated to perform the lifting operation of the hoist.

[0003] Such an elevator equipped with a lifting mechanism that uses a chain block to lift the components of the elevator using a hoisting device attached to the ceiling wall of the elevator shaft is described, for example, in JP 2003-63777 A (Patent Document 1). [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2003-63777 A Summary of the Invention [Problem to be solved by the invention]

[0005] In elevators, the car and the counterweight move up and down along their respective guide rails, so it is important to manage the installation dimensions of the elevator's components. For example, the hoist has a sheave around which the main rope for moving the car and the counterweight is wound, so the installation position of the hoist must be managed accurately.

[0006] However, the dimensional control of the elevator shaft in a building is not as strict as the dimensional control of the elevator installation. In the lifting mechanism of Patent Document 1, the hoist is fixed to the ceiling wall of the building such as the elevator shaft.

[0007] Therefore, if the fixed position of the hoisting device in the elevator shaft is not accurately managed and is fixed in a position other than the correct one, when the hoisting machine is raised by the chain block, it will not be possible to install it in the correct loading position, resulting in the problem that the installation work will require a lot of time for position adjustment.

[0008] To provide an elevator in which the fixing positions of hoists can be accurately managed and which does not require a lot of time for position adjustment in the installation work of the elevator equipment that constitutes the elevator when the elevator equipment is raised. [Means for solving the problem]

[0009] The present invention is characterized in that the guide rail that is centered in the hoistway is provided with a lifting attachment member for lifting the elevator equipment that constitutes the elevator. Note that "centered" means that the guide rail is attached to the hoistway so that the attachment position and attachment dimensions meet the specified installation conditions. Effect of the Invention

[0010] According to the present invention, by providing a hoisting fixture on a centered guide rail, the attachment position of the hoisting fixture can be accurately managed, and the elevator equipment can be installed without requiring a lot of time for position adjustment during the installation work. [Brief description of the drawings]

[0011] [Figure 1] 1 is a cross-sectional view showing the configuration of an elevator to which the present invention is applied. [Diagram 2]FIG. 2 is a top view showing the configuration of a lifting mechanism as seen from above the hoisting machine according to the first embodiment of the present invention. [Diagram 3] FIG. 3 is a view taken along the arrow C in FIG. 2. [Figure 4] FIG. 3 is a view taken along the arrow D in FIG. 2. [Diagram 5] FIG. 6 is a top view showing the configuration of a lifting mechanism as seen from above a hoisting machine according to a second embodiment of the present invention. [Figure 6] FIG. 6 is a view taken along the arrow E in FIG. 5. [Figure 7] FIG. 6 is a view taken along the arrow F in FIG. 5. [Figure 8] FIG. 11 is a top view showing the configuration of a lifting mechanism as seen from above a hoisting machine according to a third embodiment of the present invention. [Figure 9] FIG. 9 is a view taken along the arrow G in FIG. 8. [Figure 10] FIG. 9 is a view taken along the arrow H in FIG. 8. [Figure 11] FIG. 1 is a top view showing the configuration of a lifting mechanism of a conventional hoisting machine. [Figure 12] FIG. 12 is a view taken along an arrow A in FIG. 11, illustrating the state when the hoist is installed. [Figure 13] FIG. 12 is a view taken along the arrow B in FIG. 11, illustrating the state when the hoist is installed. [Figure 14] 12 is a view taken along the arrow A in FIG. 11, illustrating the state when the sling is fixed in a normal position. FIG. [Figure 15] 12 is a view taken along the arrow B in FIG. 11, illustrating a state in which the sling is fixed in a position displaced from the normal position. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0012] Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to the following embodiment, and various modifications and application examples within the technical concept of the present invention are also included within its scope.

[0013] In the embodiment described below, a hoist is shown as a typical example of elevator equipment, but the present invention is not limited to this and can also be applied when lifting other components that make up an elevator (referred to as elevator equipment in the claims).

[0014] First, the configuration of a typical elevator and the conventional installation method (lifting method) of a hoist and the problems associated with it will be briefly explained. Here, Fig. 1 is a cross-sectional view showing the configuration of the elevator.

[0015] In FIG. 1, reference numeral 10 denotes an elevator, and this elevator 10 is provided in a building 11. The building 11 may be an office building, an apartment building, a train station, or the like. Inside the building 11, a hoistway 12 is formed extending from a lower floor to an upper floor. The hoistway 12 is provided with landings 13 provided on each floor, and passengers of a car 14 traveling in the hoistway 12 exit the car 14 at the landings 13, and passengers of the landings 13 board the car 14.

[0016] A car 14 and a counterweight 15 are provided inside the hoistway 12, and pulleys are provided on the car 14 and the counterweight 15. A hoisting machine 16 is disposed above the hoistway 12. A sheave 17 is attached to the hoisting machine 16, and a main rope 18, both ends of which are fixed, is wound around the pulley of the car 14, the sheave 17, and the pulley of the counterweight 15.

[0017] Further, a pair of counterweight-side guide rails 19 corresponding to the counterweight 15 are provided on the wall surface side of the hoistway 12, and the counterweight 15 is guided in the vertical direction by the counterweight-side guide rails 19. Similarly, a pair of car-side guide rails 20 corresponding to the car 14 are provided on the wall surface side of the hoistway 12, and the car 14 is guided in the vertical direction by the car-side guide rails 20.

[0018] The weight side guide rail 19 and the car side guide rail 20 are supported by a rail support base 21 provided on the bottom surface of the hoistway 12, and a buffer 22 is further attached to this.

[0019] Then, according to instructions from the platform 13 or the car 14, the hoist 16 is controlled and driven, and the car 14 travels to the designated floor to perform the operating service.

[0020] Next, the installation of the elevator hoisting machine in the elevator described above will be explained. Installation of the elevator hoisting machine is assumed to occur when a new elevator is installed or when the hoisting machine is replaced. Although there are various types of equipment that constitute an elevator, the installation of the hoisting machine will be explained here as a typical example.

[0021] Figures 11 to 15 show the state in which a hoisting machine 16 is lifted using a conventional lifting mechanism, with Figure 11 showing the hoisting machine 16 as viewed from above, Figure 12 (viewed by arrow A) and Figure 13 (viewed by arrow B) showing the hoisting machine installed in the correct position, Figure 14 showing the lifted state when the hoistway side hoisting device is fixed in the correct position, and Figure 15 showing the lifted state when the hoistway side hoisting device is fixed away from the correct position.

[0022] In Fig. 11, a pair of car-side guide rails 20A, 20B are arranged near the wall surface of the elevator shaft 12 so that the car 14 runs between them. A hoist 16 is placed on the upper left side of the drawing, and a pair of weight-side guide rails 19A, 19B are arranged to sandwich the hoist 16 (one of the weight-side guide rails 19B is hidden and cannot be seen). The guide rails are arranged so that a straight line Lsc connecting the pair of car-side guide rails 20A, 20B and a straight line Lsw connecting the pair of weight-side guide rails 19A, 19B are perpendicular to each other. A hall-side door 23 is provided in the elevator shaft 12.

[0023] A hoist-side hoisting tool 25 is attached to the upper surface of the hoist 16. When the hoist 16 is installed, a hook of a chain block is engaged with this hoist-side hoisting tool 25 to lift the hoist 16.

[0024] Here, the installation position of the hoist-side hoist 25 is a position where the hoist 16 can maintain a normal installation posture (for example, a horizontal posture) when the hoist 16 is hoisted by the chain block. Specifically, the installation position of the hoist-side hoist 25 can be determined so that the center of gravity of the hoist 16 is located on a vertical line passing through the hoisting point (here, the hook) when the hoist 16 is hoisted.

[0025] 12 and 13 show the side view of FIG. 11. In this state, the hoisting machine 16 is installed in the normal state. A pair of base supports 26 are fixed to the pair of counterweight side guide rails 19A and 19B. Compared to one counterweight side guide rail 19A, the other counterweight side guide rail 19B is set to have a shorter length in the upward direction of the hoistway 12. Therefore, the position of the base support 26 is determined based on this length.

[0026] A machine base (also called a machine beam) 27 is spanned and fixed across the base support 26. Furthermore, the hoist 16 is placed on the machine base 27 via an elastic body 28. The base support 26 and the machine base 27 are attached to the weight guide rails 19A and 19B in advance before the hoist 16 is placed on them.

[0027] Also, a hoistway-side suspender 30 in the form of an anchor bolt is fixed to the ceiling wall 29 of the hoistway 12. Then, as shown in Figures 12 and 13, if the approximate center position of the hoistway-side suspender 30 fixed in the correct position and the approximate center position of the hoistway-side suspender 25 overlap on a straight line (vertical line) seen in the direction of gravity, then the hoisting machine 16 is considered to be installed in the correct position. Here, "approximately" means including an allowable range from the viewpoint of product dimensional control.

[0028] Fig. 14 shows the lifting state of the hoisting machine 16 when the hoistway-side hoisting tool 30 is fixed in the correct position on the ceiling wall 29. In Fig. 14, a hook provided on one chain 32 of the chain block 31 is engaged with the hoistway-side hoisting tool 30, and a hook provided on the other chain 33 of the chain block 31 is engaged with the hoisting machine-side hoisting tool 25. In this state, the chain block 31 is operated to lift the hoisting machine 16.

[0029] In this state, since the hoistway side hoisting device 30 is fixed in the correct position on the ceiling wall 29, the hoisting machine 16 can be lifted to the correct loading position, as shown by the two-dot chain line.

[0030] On the other hand, Fig. 15 shows the lifting state of the hoisting machine 16 when the hoistway-side hoisting tool 30 is fixed at a position shifted by a distance Δd from the normal position. In Fig. 15, a hook provided on one chain 32 of the chain block 31 is engaged with the hoistway-side hoisting tool 30 fixed at the shifted position, and a hook provided on the other chain 33 of the chain block 31 is engaged with the hoisting machine-side hoisting tool 25. In this state, the chain block 31 is operated to lift the hoisting machine 16.

[0031] In this state, since the shaft-side hoisting device 30 is fixed at a position shifted from the normal position, the hoisting machine 16 cannot be lifted to the normal loading position, as shown by the dashed double-dashed line shifted by a distance Δd from the position in Figure 14.

[0032] In this way, if the fixed position of the hoistway side suspender 30 on the ceiling wall 29 of the hoistway 12 is not accurately managed, the hoistway side suspender 30 will be fixed in a position different from the correct one, and when the hoisting machine 16 is lifted by the chain block 31, it will be impossible to install the hoisting machine 16 in the correct loading position, resulting in the problem that a lot of time will be required to adjust the position.

[0033] In order to address such issues, the present invention proposes a lifting mechanism in which a hoisting device for lifting an elevator component, in this case a hoisting machine, is provided on a guide rail that is centered in the hoistway. This provides the effect that the fixed position of the hoisting device can be accurately controlled by providing the hoisting device on the centered guide rail, and that the installation work for the hoisting machine does not require a lot of time for position adjustment.

[0034] Hereinafter, several embodiments of the present invention will be described with reference to the drawings. Note that the same reference numerals denote the same components, and therefore a repeated description will be omitted. However, additional description may be provided as necessary. EXAMPLES

[0035] A first embodiment of the present invention will be described with reference to Fig. 2 to Fig. 4. Fig. 2 shows a state in which a hoisting machine 16 is viewed from above, and Fig. 3 and Fig. 4 show a state in which the configuration of Fig. 2 is viewed from the side (arrows C / D).

[0036] 2 to 4, the present embodiment is premised on the assumption that the counterweight side guide rails 19A, 19B and the car side guide rails 20A, 20B have been "centered" with respect to the hoistway 12. Here, centering the guide rails means that the guide rails are attached to the hoistway such that the attachment positions and attachment dimensions meet predetermined installation conditions.

[0037] Generally, a well-known centering method is to use a piano wire for centering. On the premise that the guide rails 19 and 20 are centered in this manner, the lifting mechanism of this embodiment has the following configuration.

[0038] In the present embodiment described below, it is assumed that the mounting position of the hoisting machine side hoist 25 is determined to be a position where the hoisting machine 16 can maintain a normal mounting posture (horizontal posture) as described above. In the present embodiment, the center of gravity of the hoisting machine 16 is located on the rotation center line of the hoisting machine 16, and the mounting position of the hoisting machine side hoist 25 is determined based on this.

[0039] In Fig. 2, a suspension beam support 35 is fixed to the upper surface of one of the weight guide rails 19A, and a suspension beam support 36 is fixed to the upper surface of one of the car guide rails 20A (these function as suspension attachment members). Both suspension beam support pedestals 35, 36 have flat surfaces that extend in a direction perpendicular to the direction in which both guide rails 19A, 20A extend (the direction in which the hoistway extends) (i.e., in a substantially horizontal direction). The heights of both suspension beam support pedestals 35, 36 in the vertical direction of the hoistway 12 are the same.

[0040] A suspension beam 37 is provided so as to span between the suspension beam support 35 and the suspension beam support 36. Here, the guide rails 19A, 20A to which the suspension beam support 35 and the suspension beam support 36 are fixed are guide rails that are located at a position where the suspension beam 37 can straddle the hoisting machine 16 from above. This allows a beam-side hoisting tool 38 for lifting the hoisting machine 16 to be provided on the suspension beam 37.

[0041] In this embodiment, the guide rails 19A, 20A to which the suspension beam receiving bases 35, 36 are attached are the counterweight side guide rail 19A adjacent to the hoisting machine 16 and the car side guide rail 20A adjacent to the hoisting machine 16. Here, the car side guide rail 20A is the guide rail adjacent to the counterweight side guide rail 19B. In other words, the guide rails to which the suspension beam receiving bases 35, 36 are attached are guide rails that can lift the hoisting machine 16.

[0042] The other weight-side guide rail 19B on which the hanging beam support 35 of the weight-side guide rail 19 is not provided is not long enough in the height direction of the hoistway 2 to provide the hanging beam support 35. In addition, the other car-side guide rail 20B on which the hanging beam support 36 of the car-side guide rail 20 is not provided is far away from the hoisting machine 16, so the hoisting machine 16 cannot be lifted to the correct position.

[0043] Therefore, the weight-side guide rail 19A to which the suspension beam support 35 is attached is the guide rail on the higher side within the hoistway 12, and the car-side guide rail 20A to which the suspension beam support 36 is attached is the guide rail on the side closer to the hoisting machine 16. This also applies to the "suspension equipment support" in the second and third embodiments described below.

[0044] 2 shows the state in which the hoisting machine 16 is placed in the correct position, and the attachment position of the beam side hoisting tool 38 is the portion where the longitudinal center line Sc of the hoisting beam 37 and the rotation center line Rc of the hoisting machine 16 when the hoisting machine 16 is placed in the correct position intersect at right angles, and this portion coincides with the position of the center of gravity of the hoisting machine 16. Therefore, if this attachment position is determined in advance and the beam side hoisting tool 38 is positioned, the hoisting machine 16 can be lifted to the correct position.

[0045] In other words, when the hoist 16 is placed in the normal mounting position, the beam side suspender 38 is attached at the position where the vertical line passing through the hoist side suspender 25 intersects with the suspension beam 37. Therefore, it becomes possible to accurately determine the attachment position of the b-beam side suspender 38 based on the centered guide rails 19, 20.

[0046] As shown in Figures 3 and 4, the beam side hoist 38 is attached to the surface of the hoisting beam 37 on the side of the hoisting machine 16, and a hook provided on the chain of the chain block 30 is adapted to engage with this.

[0047] It should be noted that lifting devices other than chain blocks may be used, including the following other embodiments, and these are collectively defined as lifting devices, although the following description will be given assuming that the device is a chain block.

[0048] Here, in this embodiment, the hanging beam support 35 and the hanging beam support 36 are pre-fixed to the guide rails 19A and 20A before centering by bolts or welding, and the installation state is determined based on the indexed installation position of the beam side hanger 38.

[0049] Alternatively, the suspension beam support 35 and the suspension beam support 36 may be attached to the guide rails 19A and 20A after centering. In this case, the suspension beam support 35 and the suspension beam support 36 are configured to be fixed with fasteners such as bolts, and may be removable or may be left in the attached state.

[0050] The suspension beam 37 is attached later to the suspension beam support 35 and the suspension beam support 36 which are attached to the centered guide rails 19A and 20A. In this case, the suspension beam 37 is configured to be fixed with a fastener such as a bolt, and may be removable or may be left in the attached state.

[0051] Furthermore, the suspension beam support 35, the suspension beam support 36, and the suspension beam 37 are configured to be adjustable in position. For example, in FIG. 2, the suspension beam 37 can be configured to move in the direction of the arrow Awf, which is a direction parallel to the rotation axis Rc of the hoisting machine 16.

[0052] Similarly, the beam-side suspender 38 and the suspension beam 37 are configured to be position adjustable. For example, in Fig. 3, the beam-side suspender 38 can be configured to move in the direction of the arrow Awr, here a direction perpendicular to the rotation axis Rc of the hoisting machine 16 (see Fig. 2). In other words, as shown in Fig. 2, the position can be adjusted by moving the beam-side suspender 38 in the direction of the center line Sc in the longitudinal direction of the suspension beam 37.

[0053] 3 and 4 show the lifting state of the hoisting machine 16 when the beam-side hoisting tool 38 in this embodiment is fixed in the normal position after the above-mentioned adjustment is performed. In Fig. 3 and Fig. 4, a hook provided on one chain 32 of the chain block 31 is engaged with the beam-side hoisting tool 38, and a hook provided on the other chain 33 of the chain block 31 is engaged with the hoisting machine-side hoisting tool 25. In this state, the chain block 31 is operated to lift the hoisting machine 16.

[0054] In this state, the hoisting beam 37 is supported on the centered guide rails 19A, 20A, and the above-mentioned adjustments are made as necessary. Therefore, the beam side hoisting tool 38 is attached in an accurate position, so that the hoisting machine 16 can be lifted to the correct loading position, as shown by the two-dot chain line.

[0055] Thus, according to this embodiment, the suspension beam for lifting the hoist and the beam side suspension tool are provided on the two centered guide rails in the hoistway. By providing the suspension beam and the beam side suspension tool on the centered guide rails, the mounting position of the suspension tool can be accurately controlled, and the installation work of the hoist does not require much time for position adjustment. EXAMPLES

[0056] Next, a second embodiment of the present invention will be described with reference to Fig. 5 to Fig. 7. Fig. 5 shows a state in which the hoisting machine 16 is viewed from above, and Fig. 6 and Fig. 7 show a state in which the configuration of Fig. 5 is viewed from the side (arrows E and F).

[0057] 5 to 7, this embodiment is premised on the assumption that the counterweight side guide rail 19 and the car side guide rail 20 have been "centered" with respect to the hoistway 12. Here, centering the guide rails means, as described above, that the guide rails are attached to the hoistway such that the attachment position and attachment dimensions meet the specified installation conditions.

[0058] As described above, the centering work is generally performed by using a piano wire. On the premise of the guide rails 19 and 20 after such centering, the lifting mechanism of this embodiment has the following configuration.

[0059] Here, in the present embodiment described below, as described above, it is assumed that the installation position of the hoisting machine side hoist 25 is determined to be a position where the hoisting machine 16 can maintain the normal installation posture (horizontal posture). In the case of the present embodiment, the center of gravity of the hoisting machine 16 is located on the rotation center line of the hoisting machine 16, and the installation position of the hoisting machine side hoist 25 is determined based on this.

[0060] In Fig. 5, a hoisting equipment support 40 is fixed to the upper surface of one of the weight guide rails 19A, and a hoisting equipment support 41 is fixed to the upper surface of one of the car guide rails 20A (these function as hoisting equipment mounting members). Both hoisting equipment support 40, 41 have a flat surface that extends in a direction perpendicular to the direction in which both guide rails 19A, 20A extend (i.e., in a substantially horizontal direction), and a hoisting equipment is attached to this flat surface. The heights of both hoisting equipment support 40, 41 in the vertical direction of the hoistway 12 are the same.

[0061] Here, guide rails 19A, 20A to which the hoisting tool receiving base 40 and the hoisting tool receiving base 41 are fixed are guide rails in which the linear region connecting the hoisting tool receiving base 40 and the hoisting tool receiving base 41 is located in a position that allows the hoisting tool receiving base 40 and the hoisting tool receiving base 41 to straddle the hoisting machine 16 from above, as in the first embodiment. This allows rail-side hoists 42, 43 (see FIG. 6) that lift the hoisting machine 16 to be provided on the hoisting tool receiving base 40 and the hoisting tool receiving base 41.

[0062] 5 shows a state where the hoist 16 is placed in the correct position. The position of the hoist-side hoist 25 is such that the straight line Lc connecting the rail-side hoist 42 attached to the weight-side guide rail 19A via the hoist support 40 and the rail-side hoist 43 attached to the car-side guide rail 20A via the hoist support 41 intersects at right angles with the rotation center line Rc of the hoist 16 when the hoist 16 is placed in the correct position.

[0063] Therefore, by determining in advance the position of the hoist side hoist 25 in the correct loading position of the hoist 16, and positioning the rail side hoist 42 and the rail side hoist 43 so that the straight line connecting the rail side hoist 42 and the rail side hoist 43 passes through the position of the hoist side hoist 25, the hoist 16 can be lifted to the correct position.

[0064] In other words, the rail side hanger 42 and the rail side hanger 43 are attached so that when the hoist 16 is placed in the normal mounting position, a vertical line passing through the hoist side hanger 25 intersects with a straight line Lc connecting the rail side hanger 42 and the rail side hanger 43. Therefore, it becomes possible to accurately determine the attachment positions of the rail side hanger 42 and the rail side hanger 43 based on the centered guide rails 19A, 20A.

[0065] 6 and 7, the rail-side hoist 42 is attached to the hoisting tool support 40, and a hook provided on the chain 45-1 of the chain block 44-1 is adapted to engage with the rail-side hoist 42. Also, a hook provided on the chain 46-1 of the chain block 44-1 is adapted to engage with the hoist-side hoist 25.

[0066] Similarly, the rail-side hoist 43 is attached to the hoist support 41, and a hook provided on the chain 45-2 of the chain block 44-2 is adapted to engage with the rail-side hoist 43. Also, a hook provided on the chain 46-2 of the chain block 44-2 is adapted to engage with the hoist-side hoist 25.

[0067] In this embodiment, the hoisting device receiving base 40 and the hoisting device receiving base 41 are fixed in advance to the guide rails 19A and 20A before centering by bolts or welding, and the installation state is determined based on the indexed installation positions of the rail side hoists 42 and 43.

[0068] Alternatively, the hoisting equipment receiving base 40 and the hoisting equipment receiving base 41 may be attached to the guide rails 19A, 20A after centering. In this case, the hoisting equipment receiving base 40 and the hoisting equipment receiving base 41 are configured to be fixed with fasteners such as bolts and may be removable or may be left in the attached state.

[0069] Here, the hoisting tool receiving base 40 and the rail side hoisting tool 42, and the hoisting tool receiving base 41 and the rail side hoisting tool 43 are configured to be position adjustable. For example, in Fig. 5, the rail side hoists 42 and 43 can be configured to move in the direction of a straight line Lc, here, in a direction perpendicular to the rotation axis Rc of the hoisting machine 16.

[0070] In addition, the rail-side suspenders 42, 43 can be configured to move in a direction parallel to the rotation axis Rc of the hoisting machine 16.

[0071] Figures 6 and 7 show the lifted state of the hoist 16 after the rail side hoists 42, 43 in this embodiment have been adjusted as described above (as shown in Figure 5, the rail side hoist 42, the hoist side hoist 25, and the rail side hoist 43 are positioned in a straight line in a direction perpendicular to the rotation axis of the hoist 16).

[0072] 6 and 7, a hook provided on one chain 45-1 of the chain block 44-1 is engaged with the rail-side suspender 42, and a hook provided on the other chain 46-1 of the chain block 44-1 is engaged with the hoist-side suspender 25. Similarly, a hook provided on one chain 45-2 of the chain block 44-2 is engaged with the rail-side suspender 43, and a hook provided on the other chain 46-2 of the chain block 44-2 is engaged with the hoist-side suspender 25.

[0073] In this state, the chain blocks 44-1, 44-2 are operated to lift the hoist 16. Here, the angle θ1 of the chains 45-1, 46-1 relative to the vertical line passing through the hoist-side hoisting device 25 and the angle θ2 of the chains 45-2, 46-2 relative to the vertical line are the same angle.

[0074] In this state, the rail side hoists 42, 43 are supported by the centered guide rails 19A, 20A, and the above-mentioned adjustments are made as necessary. Therefore, since the rail side hoists 42, 43 are attached in accurate positions, the hoist 16 can be lifted near the normal position, as shown by the two-dot chain line.

[0075] Here, the hoist 16 is provided with a hoist-side hoist 25, but as in the third embodiment described below, two hoist-side hoisting tools may be provided. In this case, however, the two hoist-side hoisting tools 25 are disposed on a straight line Lc perpendicular to the rotation center line Rc of the hoist 16 shown in FIG.

[0076] Thus, according to this embodiment, two rail-side hoists for lifting the hoist are provided on two centered guide rails in the hoistway. By providing two rail-side hoists on the centered guide rails, the mounting positions of the hoists can be accurately controlled, and the installation work of the hoist does not require much time for position adjustment. EXAMPLES

[0077] Next, a third embodiment of the present invention will be described with reference to Fig. 8 to Fig. 10. Fig. 8 shows a state in which the hoisting machine 16 is viewed from above, and Fig. 9 and Fig. 10 show a state in which the configuration of Fig. 8 is viewed from the side (as viewed by arrows G and H).

[0078] This third embodiment is a modified example of the second embodiment, and differs in that two hoist side hoisting devices 25-1, 25-2 are provided on the hoist 16, and that the hoist side hoisting devices 25-1, 25-2 are arranged on a straight line oblique to the center line of rotation of the hoist 16.

[0079] 8 to 10, this embodiment is premised on the assumption that the counterweight side guide rail 19 and the car side guide rail 20 have been "centered" with respect to the hoistway 12. Here, centering the guide rails means, as described above, that the guide rails are attached to the hoistway such that the attachment position and attachment dimensions meet the specified installation conditions.

[0080] For this centering work, a method of performing centering using a piano wire is generally well known. On the premise of the guide rails 19 and 20 after such centering, the lifting mechanism of this embodiment has the following configuration.

[0081] In the present embodiment described below, as described above, it is assumed that the mounting position of the hoisting machine side hoisting tool is determined to be a position where the hoisting machine 16 can maintain the normal mounting posture (horizontal posture). In the case of this embodiment, as shown in Fig. 8, two hoisting machine side hoisting tools 25-1 and 25-2 are arranged on both sides of the rotation center of the hoisting machine 16.

[0082] The hoisting machine side hoists 25-1 and 25-2 are arranged on a straight line oblique to the rotation center line of the hoisting machine 16. The reason for this arrangement is to maintain a regular installation posture according to the shape of the hoisting machine 16, and because of differences in the shapes of the fixing brackets that form the hoisting machine side hoists 25-1 and 25-2 (there are of course other factors as well). The center of gravity of the hoisting machine 16 is located between the hoisting machine side hoists 25-1 and 25-2.

[0083] In Fig. 8, a hoisting equipment support 40 is fixed to the upper surface of one of the weight guide rails 19A, and a hoisting equipment support 41 is fixed to the upper surface of one of the car guide rails 20A. Both hoisting equipment support 40, 41 have a flat surface that extends in a direction perpendicular to the direction in which both guide rails 19A, 20A extend (i.e., in a substantially horizontal direction), and a hoisting equipment is attached to this flat surface. The heights of both hoisting equipment support 40, 41 in the vertical direction of the hoistway 12 are the same.

[0084] Here, guide rails 19A, 20A to which the hoisting tool receiving base 40 and the hoisting tool receiving base 41 are fixed are guide rails in which the linear area connecting the hoisting tool receiving base 40 and the hoisting tool receiving base 41 is located in a position that allows the hoisting tool receiving base 40 and the hoisting tool receiving base 41 to straddle the hoisting machine 16 from above, as in the first embodiment. This allows rail-side hoists 42, 43 (see FIG. 9) that lift the hoisting machine 16 to be provided on the hoisting tool receiving base 40 and the hoisting tool receiving base 41.

[0085] 8 shows a state in which the hoist 16 is placed in the correct position. In this embodiment, the rail side hoist 42 attached via a hoisting tool support 40 and the rail side hoist 43 attached via a hoisting tool support 41 are disposed on a straight line passing through the hoisting tool side hoist 25-1 and the hoisting tool side hoist 25-2.

[0086] Therefore, by determining in advance the positions of the hoist side hoists 25-1, 25-2 in the correct loading position of the hoist 16, and then positioning the rail side hoist 42 and the rail side hoist 43 on the hoist support bases 40, 41 on a straight line passing through the hoist side hoist 25-1 and the hoist hoist 25-2, the hoist 16 can be lifted to the correct position.

[0087] In other words, the rail side suspenders 42 and 43 are attached so that they are positioned on a straight line passing through the hoist side suspenders 25-1 and 25-2 when the hoist 16 is placed in the normal mounting position. Therefore, it becomes possible to accurately determine the mounting positions of the rail side suspenders 42 and 43 based on the centered guide rails 19A and 20A.

[0088] 9 and 10, the rail-side hoist 42 is attached to the hoisting tool support 40, and a hook provided on a chain 45-1 of the chain block 44-1 is adapted to engage with the rail-side hoist 42. Also, a hook provided on a chain 46-1 of the chain block 44-1 is adapted to engage with the hoist-side hoist 25-1.

[0089] Similarly, the rail-side hoist 43 is attached to the hoist support 41, and a hook provided on the chain 45-2 of the chain block 44-2 is adapted to engage with the rail-side hoist 43. Also, a hook provided on the chain 46-2 of the chain block 44-2 is adapted to engage with the hoist-side hoist 25-2.

[0090] In this embodiment, the hoisting device receiving base 40 and the hoisting device receiving base 41 are fixed in advance to the guide rails 19A and 20A before centering by bolts or welding, and the installation state is determined based on the indexed installation positions of the rail side hoists 42 and 43.

[0091] Alternatively, the hoisting equipment receiving base 40 and the hoisting equipment receiving base 41 may be attached to the guide rails 19A, 20A after centering. In this case, the hoisting equipment receiving base 40 and the hoisting equipment receiving base 41 are configured to be fixed with fasteners such as bolts and may be removable or may be left in the attached state.

[0092] Here, the hoisting tool receiving base 40 and the rail side hoisting tool 42, and the hoisting tool receiving base 41 and the rail side hoisting tool 43 are configured to be position adjustable. For example, in Fig. 8, the rail side hoisting tools 42 and 43 can be configured to move in the direction of a straight line Ld.

[0093] In addition, the rail-side suspenders 42, 43 can be configured to move in a direction parallel to the rotation axis Rc of the hoisting machine 16.

[0094] Figures 9 and 10 show the lifted state of the hoist 16 after the rail side hoists 42, 43 in this embodiment have been adjusted as described above (as shown in Figure 8, the rail side hoist 42, the hoist side hoist 25-1, the hoist side hoist 25-2, and the rail side hoist 43 are positioned in a straight line in a direction oblique to the rotation axis of the hoist 16).

[0095] 9 and 10, a hook provided on one chain 45-1 of the chain block 44-1 is engaged with the rail-side suspender 42, and a hook provided on the other chain 46-1 of the chain block 44-1 is engaged with the hoist-side suspender 25-1. Similarly, a hook provided on one chain 45-2 of the chain block 44-2 is engaged with the rail-side suspender 43, and a hook provided on the other chain 46-2 of the chain block 44-2 is engaged with the hoist-side suspender 25-2. In this state, the chain blocks 44-1 and 44-2 are operated to lift the hoist 16.

[0096] Here, when viewed from the front of the hoist 16 with the sheave side facing forward as shown in Figure 9, the angle θ3 of the chains 45-1, 46-1 relative to the vertical line passing through the hoist side hoist 25-1 and the angle θ4 of the chains 45-2, 46-2 relative to the vertical line passing through the hoist side hoist 25-2 are the same angle.

[0097] Furthermore, as shown in Figure 10, in a side view of the hoist relative to the front view of Figure 9, the angle θ5 of chains 45-1, 46-1 relative to a vertical line passing through hoist side hoist 25-1 and the angle θ6 of chains 45-2, 46-2 relative to a vertical line passing through hoist side hoist 25-2 are the same angle.

[0098] In this state, the rail-side hoists 42, 43 are supported by the centered guide rails 19A, 20A, and the above-mentioned adjustments are made as necessary. Therefore, since the rail-side hoists 42, 43 are attached in accurate positions, the hoist 16 can be lifted to the correct loading position, as shown by the two-dot chain line.

[0099] Thus, according to this embodiment, two rail-side hoists for lifting the hoist are provided on two centered guide rails in the hoistway. By providing two rail-side hoists on the centered guide rails, the mounting positions of the hoists can be accurately controlled, and the installation work of the hoist does not require much time for position adjustment.

[0100] The present invention is not limited to the above-mentioned embodiments, and includes various modified examples. For example, a modified example is considered in which a guide device is attached to the hoist, and the guide device comes into contact with the guide rail 19A when the hoist is lifted, so that the hoist is guided and lifted, and the positions of the rail side hoists 42 and 43 in FIG. 5 are shifted in a direction approaching the side of the guide rail 19A from the positions shown in the second embodiment. In this case, the hoist is pulled toward the side of the guide rail 19A during lifting, so that the contact state between the guide device and the guide rail 19A is stable, and the posture of the hoist during lifting can be stabilized. The gist of these embodiments is that by providing the rail side hoist positions on the two centered guide rails, the rail side hoist position relative to the hoist side hoist position can be accurately changed to any position without being affected by the dimensional accuracy of the building, and the effect of the present invention is that the placement position after lifting and the posture during lifting can be adjusted. In addition, the above-mentioned embodiment has been described in detail to easily explain the present invention, and is not necessarily limited to having all of the configurations described. In addition, it is possible to replace a part of the configuration of one embodiment with the configuration of another embodiment, and it is also possible to add the configuration of another embodiment to the configuration of one embodiment. It is also possible to add, delete, or replace other configurations with respect to the configuration of each embodiment. [Explanation of symbols]

[0101] 10...elevator, 11...building, 12...hoistway, 13...landing, 14...car, 15...counterweight, 16...hoisting machine, 17...sheave, 18...main rope, 19...guide rail on counterweight side, 20...car side guide rail, 25...hoisting machine side hoisting device, 25-1, 25-2...hoisting machine side hoisting device, 30...chain block, 35, 36...suspension beam support base, 37...suspension beam, 35, 36...suspension beam support base, 37...suspension beam, 38...beam side hoisting device, 40, 41...hoisting device support base, 42, 43...rail side hoisting device, 44-1, 44-2...chain block.

Claims

1. An elevator comprising: a hoistway formed in a building; a car moving in the hoistway; a counterweight connected to the car via a main rope; a pair of car-side guide rails that guide the movement of the car; a pair of counterweight-side guide rails that guide the movement of the counterweight; and elevator equipment installed in the hoistway, such as a hoist around which the main rope is wound and which moves the car and the counterweight in different directions within the hoistway, The car-side guide rail and the weight-side guide rail are guide rails that have been centered by a centering operation, The centered car side guide rail and the weight side guide rail are provided with a lifting attachment member for lifting the elevator equipment. An elevator characterized by:

2. In the elevator according to claim 1, The sling attachment member is provided on one of the car-side guide rails and one of the weight-side guide rails. An elevator characterized by:

3. In the elevator according to claim 2, The elevator equipment is the hoist, and the car-side guide rail and the weight-side guide rail to which the hoist attachment member is attached are guide rails capable of lifting the hoist. An elevator characterized by:

4. In the elevator according to claim 3, A suspension beam is stretched across the suspension attachment members provided on the car-side guide rail and the weight-side guide rail, and a beam-side suspension tool is attached to the suspension beam. An elevator characterized by:

5. In the elevator according to claim 4, When the hoist is lifted, a hook of a lifting device is engaged with the beam side hoist and the hoist side hoist of the hoist. An elevator characterized by:

6. In the elevator according to claim 3, The rail-side hoist is attached to each of the hoist attachment members provided on the car-side guide rail and the weight-side guide rail. An elevator characterized by:

7. In the elevator according to claim 6, The hoist is provided with one hoist-side hoisting tool, When the hoist is lifted, hooks of a lifting device are engaged with the rail side hoist and the hoist side hoist. An elevator characterized by:

8. In the elevator according to claim 6, The elevator equipment is provided with equipment-side suspenders, and the rail-side suspenders and the equipment-side suspenders are aligned in a straight line when the elevator shaft is viewed vertically. An elevator characterized by:

9. In the elevator according to claim 6, The elevator equipment is provided with equipment-side hangers, and in a vertical view of the elevator shaft, the position of the equipment-side hangers and the center position of the line segment connecting each of the rail-side hangers differ by any dimension in any direction. An elevator characterized by:

10. In the elevator according to claim 6, The elevator equipment is provided with two equipment side hangers, When the elevator equipment is lifted, the hooks of a lifting device are engaged with the rail-side hoisting fixtures and the equipment-side hoisting fixtures. An elevator characterized by:

11. In the elevator according to claim 9, In a vertical view of the elevator shaft, the rail side suspenders and the equipment side suspenders are aligned in a straight line. An elevator characterized by:

12. In the elevator according to claim 9, When the elevator shaft is viewed vertically, the line segment connecting each of the rail side hangers is moved parallel to the line segment connecting each of the equipment side hangers by any distance in any direction. An elevator characterized by:

13. In the elevator according to any one of claims 7 to 12, The elevator equipment is directed to the hoist. An elevator characterized by:

14. 14. The elevator according to claim 13, The hoist is provided with two hoist-side hoisting devices, Each of the rail side hoisting tools and each of the hoisting machine side hoisting tools are positioned on a straight line perpendicular to the rotation center line of the hoisting machine. An elevator characterized by:

15. 14. The elevator according to claim 13, The hoist is provided with two hoist-side hoisting devices, Each of the rail side hoisting tools and each of the hoisting machine side hoisting tools are positioned on a straight line in a direction oblique to the rotation center line of the hoisting machine. An elevator characterized by:

16. An elevator comprising: a hoistway formed in a building; a car moving in the hoistway; a counterweight connected to the car via a main rope; a pair of car-side guide rails that guide the movement of the car; a pair of counterweight-side guide rails that guide the movement of the counterweight; and elevator equipment installed in the hoistway, such as a hoist around which the main rope is wound and which moves the car and the counterweight in different directions within the hoistway; a centering step is carried out to center and fix the car side guide rail and the counterweight side guide rail in the hoistway, and a lifting attachment member for lifting the elevator equipment is provided on the centered car side guide rail and the counterweight side guide rail before or after the centering step; After the centering step, a hook engaging step is carried out in which a first hook of a lifting device is engaged with a first sling provided on the sling attachment member, and a second hook of the lifting device is engaged with a second sling of the elevator equipment; After the hook engaging step, a lifting step is performed in which the lifting device is operated to lift the elevator equipment to a predetermined placement position.

2. A method for lifting elevator equipment comprising the steps of:

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