Hoisting machine installation stand and hoisting machine installation method

Abstract

To provide a hoist installation frame which enables easy adjustment of tilting of a hoist during installation.SOLUTION: A hoist installation frame 3 is provided in an elevator hoistway, and supports a hoist 4 so that a sheave 41 of the hoist 4 can be fixed toward a hoistway side. The frame 3 comprises: a plurality of supports 32a-32d different in vertical height and adapted to support the hoist 4 via a vibration-proof member 33; longitudinal frames 31a and 31b arranged inside the elevator hoistway side with respect to the hoist 4 and formed such that a screw hole 34 is formed through at a position faced by the hoist 4; and a bracket 43 that is fitted to the hoist 4 and that abuts against the hoist facing surface of the frame 3, in other words, the opposite surfaces of the longitudinal frames 31a and 31b and maintains the attitude of the hoist 4 adjusted in tilting.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to a traction machine installation stand and a traction machine installation method. [Background technology]

[0002] In recent years, elevators that utilize the space within the hoistway to install the hoisting machine, control panel, etc., known as machine-room-less elevators, have become known in order to improve building utilization efficiency (see, for example, Patent Document 1). The hoisting machine is fixed to a mounting frame, which serves as a hoisting machine support, and is positioned so as to ensure an accurate posture relative to the building. The elevator described in Patent Document 1 uses a thin hoisting machine that is placed between the hoistway wall and the car, and is fixed to the mounting frame at two lower and two upper points via vibration-isolating rubber. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Patent No. 4491300 Summary of the Invention [Problem to be solved by the invention]

[0004] In the elevator described in Patent Document 1, if the horizontal positions of the center of gravity of the traction machine and the support position of the vibration-isolating rubber differ, a load may be applied in the shear direction of the vibration-isolating rubber, causing the traction machine to tilt. The tilt of the traction machine can interfere with other equipment and affect the wear of the rope wound around the traction machine sheave. Therefore, when installing the traction machine, it is necessary to adjust the tilt of the traction machine to within an allowable value. Conventionally, tilt adjustment has been performed, for example, by utilizing the play in the bolt fastening parts of the traction machine support, but this adjustment work takes time and there is a limit to the adjustment range. [Means for solving the problem]

[0005] The traction machine installation stand according to the present invention is provided in an elevator hoistway.hand A hoisting machine installation stand that supports a hoisting machine, The hoisting machine has a housing, a sheave protruding from the housing, first and second fixed parts provided at a position vertically below the axis of the sheave, and third and fourth fixed parts provided at a position vertically above the axis of the sheave, and the center of gravity is located rearward of the sheave in the protruding direction of the sheave. The hoisting machine installation frame has first and second frame parts arranged side by side in the horizontal direction and extending vertically, a first support part provided on the first frame part and supporting the first fixed part at a distance from the first frame part via vibration-isolating rubber, a second support part provided on the second frame part and supporting the second fixed part at a distance from the second frame part via vibration-isolating rubber, and a third support portion provided on a frame portion and supporting the third fixed portion via vibration-isolating rubber; a fourth support portion provided on the second frame portion and supporting the fourth fixed portion via vibration-isolating rubber; a first bracket attached to the first fixed portion and having a first opposing portion facing the first frame portion and abutting directly or indirectly against the first frame portion; and a second bracket attached to the second fixed portion and having a second opposing portion facing the second frame portion and abutting directly or indirectly against the second frame portion, wherein a first screw hole penetrating the first frame portion is formed at a position of the first frame portion facing the first fixed portion, and a second screw hole penetrating the second frame portion is formed at a position of the second frame portion facing the second fixed portion. . A hoisting machine installation method according to an aspect of the present invention is a hoisting machine installation method for installing a hoisting machine on the hoisting machine installation stand, The first fixing portion, the second fixing portion, the third fixing portion and the fourth fixing portion a. Vibration isolation rubber via The first support portion, the second support portion, the third support portion, and the fourth support portion, fixed The first step is to , After the first step is performed, The above 1st screw holes and the second screw hole of the second frame portion, From inside the elevator shaft Bolts respectively Screw together And each The tip of the bolt The first fixing portion and the second fixing portion each abutting the sheave so that the axis of the sheave is horizontal , in the first screw hole and the second screw hole The bolt a second step of adjusting the screwed-in states of the first and second brackets, respectively, and after the second step is performed, a third step of directly or indirectly abutting the first frame portion against the first opposing portion to fix the first bracket to the first fixing portion, and directly or indirectly abutting the second frame portion against the second opposing portion to fix the second bracket to the second fixing portion, and then removing the bolts from the first screw holes and the second screw holes, respectively, is performed. . [Effects of the Invention]

[0006] According to the present invention, the inclination of the hoist can be easily adjusted during installation. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of an elevator equipped with a traction machine installation stand according to an embodiment of the present invention. [Figure 2] FIG. 2 is a front view of the frame on which the hoisting machine is installed, as seen from inside the elevator shaft. [Figure 3] FIG. 3 is a view taken along the arrow A in FIG. [Figure 4] FIG. 4 is a cross-sectional view showing a portion of the lower support portion. [Figure 5] FIG. 5 is a diagram showing the shape of the bracket. [Figure 6] FIG. 6 is a diagram illustrating the first step of the tilt adjustment work. [Figure 7] FIG. 7 is a diagram illustrating the second step of the tilt adjustment work. [Figure 8] FIG. 8 is a diagram illustrating the third step of the tilt adjustment work. [Figure 9] FIG. 9 is a diagram showing the first modification. [Figure 10]FIG. 10 is a diagram showing a second modification. [Figure 11] FIG. 11 is a diagram showing the third modification, and is a front view. [Figure 12] FIG. 12 is a view showing the third modification, taken along the arrow C in FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. The following description and drawings are examples for explaining the present invention, and appropriate omissions and simplifications have been made for clarity of explanation. Furthermore, in the following description, identical or similar elements and processes are given the same reference numerals, and duplicate explanations may be omitted. Note that the content described below merely shows an example of an embodiment of the present invention, and the present invention is not limited to the following embodiment, and can be implemented in various other forms.

[0009] FIG. 1 is a diagram showing the schematic configuration of an elevator equipped with a traction machine installation platform according to an embodiment of the present invention. A car 2 ascending and descending within an elevator hoistway 1 is guided by a guide rail 5. A counterweight 6 is guided by a guide rail 7 and moves in the opposite direction to the car 2. A top hoisting beam 8 is fixed to the tops of the guide rails 5 and 7. Pulleys 9 and 10 are provided on the top hoisting beam 8. A platform 3 on which a traction machine 4 is installed is fixed to a pair of rails 11a and 11b installed vertically within the elevator hoistway 1. A sheave 41 is provided on the traction machine 4. The car 2 and counterweight 6 ascend and descend in the space in front of the rails 11a and 11b of the elevator hoistway 1 in the illustration, and the traction machine 4 is positioned between the rails 11a and 11b and the hoistway wall at the far side in the illustration. As described above, in this embodiment, the hoisting machine 4 is disposed inside the elevator hoistway 1, and therefore a thin hoisting machine is employed for the hoisting machine 4.

[0010] In Figure 1, the platform 3 is attached to rails 11a and 11b, but it may also be configured to be attached to guide rails 5 and / or 7, or to a bracket or the like provided on the wall of the elevator hoistway 1.

[0011] A pulley 12 is provided below the car 2. One end of a rope 13 is fixed to the top lifting beam 8, and is wound around pulley 12, pulley 9, sheave 41, pulley 10, and pulley 14 provided on top of the counterweight 6, with the other end fixed to the top lifting beam 8. When the sheave 41 of the hoisting machine 4 is driven to rotate and the rope 13 moves in the direction of arrow a, the car 2 rises and the canter weight 6 falls. On the other hand, when the sheave 41 is driven to rotate in the opposite direction and the rope 13 moves in the direction of arrow b, the car 2 falls and the canter weight 6 rises.

[0012] Fig. 2 is a front view of the frame 3 on which the hoisting machine 4 is installed, as seen from inside the elevator hoistway. Fig. 3 is a view as seen from the arrow A in Fig. 2. Note that Figs. 2 and 3 show a part of the frame 3 (vertical frames 31a, 31b) in a cutaway section. The hoisting machine 4 is a thin hoisting machine to be installed in the elevator hoistway, and is installed on the frame 3 provided in the elevator hoistway 1 as shown in Fig. 1. The frame 3 includes a pair of upper and lower beams 30a, 30b fixed to a pair of rails 11a, 11b so as to span them, and a pair of left and right vertical frames 31a, 31b fixed to the upper and lower beams 30a, 30b so as to span them.

[0013] 2, L-shaped steel beams 30a, 30b and vertical frames 31a, 31b are used, and the beams 30a, 30b are fixed to the rails 11a, 11b, and the vertical frames 31a, 31b are fixed to the beams 30a, 30b by bolts. Of course, the fixing method is not limited to this, and fixing may also be by welding, for example.

[0014] The hoisting machine 4 is provided with a sheave 41 that protrudes from the front surface of the hoisting machine casing 40. As shown in Fig. 3, the hoisting machine 4 is attached to the base 3 with the sheave 41 facing the inside of the hoistway and the shaft core 410 being horizontal. The sheave 41 is driven to rotate by a motor (not shown) provided inside the hoisting machine casing 40. The hoisting machine casing 40 has fixing parts 42a to 42d on the upper and lower sides of the casing that protrude toward the sheave side for fixing the hoisting machine 4 to the base 3.

[0015] In the frame 3, a pair of beams 30a, 30b extend horizontally, and a pair of vertical frames 31a, 31b extend vertically. Each of the pair of vertical frames 31a, 31b arranged side by side in the horizontal direction has its upper end fixed to the upper beam 30a and its lower end fixed to the lower beam 30b. Four support parts 32a to 32d, to which the hoisting machine 4 is fixed via vibration-isolating members 33, are provided at the top and bottom positions of each of the vertical frames 31a, 31b.

[0016] The support portions 32a to 32d are formed, for example, from steel plates, and are welded horizontally to the surfaces of the vertical frames 31a and 31b that face the hoistway wall (the surfaces on the back side of the page) that are arranged vertically. Upper fixing portions 42a and 42b of the hoisting machine 4 are fixed via vibration-isolating members 33 to the support portions 32a and 32b that are provided at the same height in the vertical direction. Similarly, lower fixing portions 42c and 42d of the hoisting machine 4 are fixed via vibration-isolating members 33 to the lower support portions 32c and 32d that are provided at the same height in the vertical direction. L-shaped brackets 43 are attached to the lower fixing portions 42c and 42d, respectively.

[0017] 4 is an enlarged cross-sectional view of the lower support portion 32d. The vibration-isolating member 33 is formed by sandwiching a vibration-isolating rubber 330 between a pair of end plates 331 and joining them together. A mounting bolt 332 is attached to the outer surface of each end plate 331. The upper mounting bolt 332 is inserted into a through-hole 320 formed in the support portion 32d of the vertical frame 31b, and a nut 333 is tightened. As a result, the support portion 32d and the vibration-isolating member 33 are fixed together.

[0018] Meanwhile, the lower mounting bolt 332 is inserted into a through-hole 420 formed in the fixed portion 42d of the hoisting machine 4, and a nut 333 is tightened. As a result, the fixed portion 42d and the vibration-damping member 33 are fixed together. The lower mounting bolt 332 is fastened to the mounting portion 43a of the L-shaped bracket 43. The support portion 32c has a fixing structure similar to that of the support portion 32d. Furthermore, the upper support portions 32a and 32b have a fixing structure similar to that of the lower support portions 32c and 32d, except that the bracket 43 is not provided, as shown in FIGS. 2 and 3 . In the vertical frames 31a and 31b, screw holes 34 for adjusting the inclination of the hoisting machine 4 are formed at positions where the lower fixed portions 42c and 42d face each other. The use of the screw holes 34 will be described later.

[0019] A buffer member 44 made of rubber or the like is sandwiched between the opposing portion 43b of the bracket 43 and the vertical frames 31a, 31b. Figures 5(a) and (b) show the shape of the bracket 43, with Figure 5(a) being a plan view and Figure 5(b) being a B-B cross-sectional view. As described above, the L-shaped bracket 43 has the mounting portion 43a and the opposing portion 43b. The opposing portion 43b has a cylindrical recess 430 into which the buffer member 44 shown in Figure 4 is fitted or placed. The mounting portion 43a has an elongated hole 431 through which the mounting bolt 332 of the vibration-proof member 33 is inserted.

[0020] 1, rope 13 is hung around sheave 41 of hoisting machine 4, and a vertically upward suspended load is applied from rope 13 to sheave 41. Fixed parts 42a to 42d provided on hoisting machine 4 and sheave 41 are aligned in the extension direction of axis 410 of sheave 41, i.e., in the left-right direction in FIG. 3, so that the positions of fixed parts 42a to 42d of hoisting machine 4 and sheave 41 coincide with each other. Therefore, when a suspended load is applied to sheave 41, the shear force applied to vibration-proof rubber 330 can be reduced as much as possible.

[0021] 3, the position of the center of gravity G of the hoisting machine 4 is located to the right of the sheave 41 in the figure, that is, closer to the hoistway wall than the positions of the fixed parts 42a to 42d of the hoisting machine 4. Therefore, as will be described later, when the hoisting machine 4 is installed on the base 3, when the fixed parts 42a to 42d of the hoisting machine 4 are fixed to the support parts 32a to 32d of the base 3 via the vibration-isolating members 33, the vibration-isolating rubber 330 deforms and the hoisting machine 4 tilts. If the hoisting machine 4 tilts and the axis 410 of the sheave 41 tilts from the horizontal position, this affects the wear of the rope 13, so it is necessary to adjust the tilt of the hoisting machine 4 to be within the allowable value.

[0022] (Tilt adjustment operation) Next, the installation procedure for the hoisting machine 4 and the tilt adjustment operation when the hoisting machine is installed will be described. In the first step shown in Fig. 6, first, in order to check the tilt state of the hoisting machine 4, an inclination measuring device 50 is attached, for example, to the front surface of the sheave 41. This inclination measuring device 50 is generally called a plumb bob, and a holder 53 for a pendulum with a weight 51 suspended by a string 52 is attached to the front surface of the sheave. Then, the hoisting machine 4 equipped with the inclination measuring device 50 is transported into the elevator hoistway 1 and fixed to the supports 32a to 32d of the frame 3 via vibration-isolating members 33, as shown in Fig. 6.

[0023] In this case, the vibration-isolating members 33 are attached to the respective fixing portions 42a-42d of the hoisting machine 4 before transportation, and after transportation, as shown in FIG. 4, the mounting bolts 332 of the vibration-isolating members 33 are fastened to the support portions 32a-32d of the vertical frames 31a, 31b with nuts to secure the vibration-isolating members 33 to the support portions 32a-32d. At this time, the brackets 43 may be transported into the elevator hoistway while still fastened to the lower fixing portions 42c, 42d, or the lower vibration-isolating members 33 may be fixed to the support portions 32a-32d, and then the nuts 333 fastening the vibration-isolating members 33 to the fixing portions 42c, 42d may be loosened and the brackets 43 may be attached to the undersides of the fixing portions 42c, 42d. In either case, once the vibration-isolating members 33 are fixed to the support portions 32c, 32d, the nuts 333 fastening the brackets 43 together are loosened.

[0024] Whether the hoisting machine 4 is tilted or not can be determined by comparing the distance d1 between the string 52 of the tilt measuring device 50 and the upper part of the surface facing the sheave with the distance d2 between the string 52 and the lower part of the surface facing the sheave. As shown in Fig. 6, when the center of gravity position G of the hoisting machine 4 is to the right of the fixed parts 42a to 42d in the figure, d1>d2, and the lower fixed parts 42c and 42d are displaced so as to approach the vertical frames 31a and 31b.

[0025] FIG. 7 is an enlarged view of the lower support portion 32d, illustrating the second step. In FIG. 7, the two-dot chain line indicates the hoisting machine housing 40 before the hoisting machine 4 is tilted. In this state, the axis 410 of the sheave 41 is horizontal. In the second step, the jack-up bolt 35 is screwed into the threaded hole 34 of the vertical frame 31b from the left side of the vertical frame 31b in the figure, i.e., from inside the elevator hoistway, and the jack-up bolt 35 is screwed into the right side of the figure so that the tip of the jack-up bolt 35 abuts against the fixed portion 42d of the hoisting machine 4. Further, by screwing in the jack-up bolt 35, the fixed portion 42d is moved to the right in the figure, and the tilt of the hoisting machine 4 is adjusted.

[0026] Although not described here, the tilt adjustment on the vertical frame 31a side, i.e., the fixing portion 42c of the support portion 32c shown in Fig. 2, is also performed using a similar jack-up bolt 35. For this reason, the same screw holes 34 as in the case of the vertical frame 31b are formed in the area facing the fixing portion 42c of the vertical frame 31a. The tilt adjustment of the hoisting machine 4 relative to the vertical frames 31a, 31b is performed while checking the tilt with a tilt measuring device 50, and adjustment is made so that the tilt of the hoisting machine 4 is zero, i.e., so that the axis 410 of the sheave 41 is horizontal.

[0027] FIG. 8 is a diagram illustrating the third step, and similarly to FIG. 7 , shows an enlarged view of the support portion 32d. In the third step, with the fixed portions 42c and 42d of the hoisting machine 4 jacked up by the jack-up bolts 35, i.e., with the tilt of the hoisting machine 4 maintained at zero, the brackets 43 are fixed to the fixed portions 42c and 42d, respectively. Specifically, first, the buffer member 44 is attached to the recess 430 formed in the facing portion 43b of the bracket 43, and the bracket 43 is slid toward the vertical frame 31b (to the left in the figure) so that the buffer member 44 abuts against the vertical frame 31b. Then, while maintaining the bracket 43 in this state, the nut 333 is tightened onto the lower mounting bolt 332 to fix the fixed portion 42d and the bracket 43 to the vibration-proof member 33. Thereafter, the jack-up bolts 35 are removed from the vertical frame 31b, and the tilt measuring device 50 is removed from the sheave 41. As a result, as shown in FIG. 3, the hoisting machine 4 is attached to the frame 3 with the shaft center 410 of the sheave 41 in a horizontal position.

[0028] In the tilt adjustment operation described above, the hoisting machine 4 is installed on the frame 3, and the tilt is adjusted so that the axis 410 of the sheave 41 is horizontal when no suspended load is applied. However, the tilt may be adjusted again when a suspended load is applied. In this case, when a suspended load is applied, the nuts 333 securing the brackets 43 are loosened to release the cushioning members 44 from contact with the vertical frame 31b. Next, the jack-up bolts 35 are inserted into the threaded holes 34, and the jack-up bolts 35 are screwed in to adjust the tilt so that the axis 410 of the sheave 41 is horizontal. Thereafter, the brackets 43 are slid so that the cushioning members 44 contact the vertical frame 31b, and the nuts 333 are tightened to secure the fixing parts 42d and the brackets 43 to the vibration-proof members 33. As shown in FIG. 5, a recess 430 is formed in the opposing portion 43b of the bracket 43, into which a portion of the buffer member 44 is fitted or placed. This prevents the buffer member 44 from falling off when the bracket 43 is slid, making adjustment easier.

[0029] In this embodiment, an L-shaped bracket 43 is used as a member for maintaining the hoisting machine 4 in a position where the axis 410 of the sheave 41 is horizontal, but any member having a surface that is attached to the fixing portions 42c, 42d and a surface perpendicular to that surface can be used in place of the bracket 43.

[0030] As described above, in this embodiment, the screw holes 34 for jacking up are provided in the vertical frames 31a, 31b that face the fixing portions 42c, 42d that are fixed to the vibration-isolating member 33. Therefore, even if the hoisting machine housing 40 tilts when the hoisting machine 4 is installed on the frame 3, the screw holes 34 can be used to jack up with the bolts 35, and the tilt can be easily adjusted to zero. Furthermore, since the tilt adjustment work using the bolts 35 can be performed from the lifting space side of the car 2, the tilt adjustment work can be easily performed, and workability can be improved.

[0031] Furthermore, by adjusting the fixing position of the bracket 43 so that the buffer members 44 abut against the vertical frames 31a, 31b after adjusting the inclination, the posture of the hoisting machine 4 can be maintained so that the axis 410 of the sheave 41 is kept horizontal. Also, by disposing the buffer members 44 made of rubber or the like between the bracket 43 and the vertical frames 31a, 31b, the transmission of vibration between the hoisting machine 4 and the vertical frames 31a, 31b can be reduced.

[0032] Although the buffer members 44 are provided to reduce the transmission of vibration between the hoisting machine casing 40 and the vertical frames 31a, 31b, the buffer members 44 may be omitted and the opposing portions 43b of the brackets 43 may be brought into contact with the vertical frames 31a, 31b. Furthermore, although the brackets 43 are used to maintain the posture of the hoisting machine casing 40 after the tilt adjustment, shims (thin plates) for adjusting the tilt may be placed between the vertical frames 31a, 31b and the fixed portions 42c, 42d instead of the brackets 43.

[0033] Furthermore, the tilt adjustment work described above can be easily performed using the jack-up bolts 35, and can therefore be easily performed not only when installing the hoisting machine 4 but also during periodic inspections, etc. By adjusting the tilt periodically, it is possible to always use the hoisting machine 4 in an optimal condition.

[0034] (Variation 1) 9 is a diagram showing Modification 1. In Modification 1, a convex portion 45 dedicated to jacking up is provided on the surface of the hoisting machine casing 40 facing the vertical frame 31b. Then, a screw hole 34 for jacking up is formed in the vertical frame 31b at a position facing the convex portion 45. The position of the convex portion 45 may be provided anywhere in the hoisting machine casing 40 as long as it is vertically below the shaft center 410.

[0035] (Variation 2) Fig. 10 is a diagram showing Modification 2. In the embodiment described above, as shown in Fig. 1, a vertically upward hanging load is applied from rope 13 to sheave 41. For this reason, as shown in Figs. 2 and 3, fixed portions 42a to 42d are fixed to support portions 32a to 32d in a manner that hangs from vibration-isolating member 33. When a hanging load is applied to sheave 41, a force is applied to vibration-isolating member 33 in a direction that compresses vibration-isolating rubber 330.

[0036] Modification 2 shows the configuration of the frame 3 when a vertically downward suspended load is applied from the rope to the sheave. In this case, as shown in FIG. 10, vibration-isolating members 33 are arranged on the upper surfaces of the support members 32a to 32d, and fixed members 42a to 42d are fixed to the upper side of the vibration-isolating members 33. Brackets 43 are attached to the upper surfaces of the fixed members 42c and 42d. In this case as well, when the hoisting machine 4 is attached to the vertical frames 31a and 31b, the hoisting machine casing 40 is tilted so that the lower fixed members 42c and 42d approach the vertical frames 31a and 31b. As in the above case, screw holes 34 are formed in the vertical frames 31a and 31b at positions opposite the fixed members 42c and 42d, and the tilt of the hoisting machine casing 40 is adjusted so that the axis 410 is horizontal by jacking up with bolts 35. Then, the bracket 34 is fixed to the fixing portions 42c and 42d so that the buffer member 44 abuts against the vertical frames 31a and 31b.

[0037] (Variation 3) 11 and 12 are diagrams illustrating Modification 3. FIG. 11 is a front view, and FIG. 12 is a view taken along arrow C in FIG. 11. Note that FIG. 1 shows a cutaway view of a portion of the vertical frame 31b. In the above-described embodiment, the frame 3 is configured to support the hoisting machine casing 40 at two upper locations and two lower locations via vibration-isolating members 33. On the other hand, in Modification 3, as shown in FIGS. 11 and 12, the bottom surface of the hoisting machine 4 is supported by two vibration-isolating members 61, and the side surface of the hoisting machine casing 40 is supported relative to the vertical frame 31b by brackets 43. Generally, in an installation method in which a hoisting machine is placed on vibration-isolating members, the hoisting machine is placed on four vibration-isolating members. However, in the case of a thin hoisting machine 4, the dimension of the hoisting machine casing 40 in the thickness direction (the left-right direction in FIG. 12) is small, so it is often configured to be placed on two vibration-isolating members due to space constraints.

[0038] In the frame 3 of Modification 3, a beam 60 is fixed so as to span a pair of vertical frames 31a, 31b. In the example shown in Fig. 12, the beam 60 is fixed to the vertical frames 31a, 31b using bolts 70 and nuts 71, but it may also be fixed by welding or the like. The beam 60 is formed of steel material with a U-shaped cross section as shown in Fig. 12, and a pair of vibration-isolating members 61 are fixed to the upper surface of the upper support part 60a. In the vibration-isolating member 61, end plates 611 are provided at the upper and lower ends of vibration-isolating rubber 610, and two bolt holes for bolt fixation are formed in the upper end plate 611, and a mounting bolt 612 is implanted in the lower end plate 611. The vibration-damping member 61 is fixed to the support portion 60a of the beam 60 by inserting a mounting bolt 612 into a through hole formed in the support portion 60a and tightening it with a nut 613, while the upper end plate 611 is fixed to the bottom surface of the hoisting machine housing 40 by a bolt 614.

[0039] A metal plate 310 is fixed to the vertical frame 31b with bolts 72 and nuts 73. A screw hole 34 for jacking up is formed in the metal plate 310 at a position facing the hoisting machine casing 40. In addition, an attachment portion 43a of a bracket 43 is fixed to the side surface of the hoisting machine casing 40 with a bolt 74. A buffer member 44 is attached to the facing portion 43b of the bracket 43, and the buffer member 44 abuts against the metal plate 310.

[0040] In the case of variant example 3, when installing the hoisting machine 4 on the stand 3, the inclination of the hoisting machine casing 40 is adjusted using a jack-up bolt 35 so that the axis 410 is horizontal, and the posture of the hoisting machine casing 40 is maintained by a bracket 43 so that the axis 410 remains horizontal.

[0041] According to the embodiment and the modified example of the present invention described above, the following advantageous effects can be achieved.

[0042] (C1) As shown in Figures 1 to 3, etc., a cradle 3 for installing a hoisting machine is provided in an elevator hoistway 1 and supports the hoisting machine 4 so that a sheave 41 of the hoisting machine 4 is fixed facing the hoistway side. The cradle 3 supports the hoisting machine 4 via vibration-isolating members 33 and includes a plurality of support parts 32a to 32d positioned at different vertical positions, vertical frames 31a and 31b as tilt adjustment parts that are arranged inside the elevator hoistway with respect to the hoisting machine 4 and formed so that screw holes 34 pass through at positions facing the hoisting machine 4, and a bracket 43 as an attitude maintaining part that is attached to the hoisting machine 4 and abuts against the hoisting machine-facing surface of the cradle 3, i.e., the facing surface of the vertical frames 31a and 31b, and maintains the attitude of the hoisting machine 4 whose tilt has been adjusted by the tilt adjustment part.

[0043] In this way, by forming through-threaded holes 34 in the vertical frames 31a, 31b arranged inside the elevator hoistway at positions facing the hoist 4, the inclination of the hoist 4 can be adjusted so that the axis 410 of the sheave 41 is horizontal by screwing bolts 35 or the like into the screw holes 34 from inside the elevator hoistway to jack up the hoist 4. Furthermore, by abutting the brackets 43 attached to the hoist 4 against the opposing surfaces of the vertical frames 31a, 31b, the posture of the hoist 4 whose inclination has been adjusted can be maintained. As a result, the inclination of the hoist 4 can be easily adjusted from inside the elevator hoistway so that the axis 410 of the sheave 41 is horizontal, and further, the axis 410 can be maintained in a horizontal state.

[0044] (C2) In (C1) above, as shown in Figures 1 to 3, the screw hole 34 faces a position vertically below the axis 410 of the sheave 41 in the hoisting machine 4. For example, as shown in Figure 3, the screw hole 34 may be provided in a position facing the lower fixed part 42d, or as shown in Figure 9, a protrusion 45 may be provided on the front of the hoisting machine casing 40 and the screw hole 34 may be provided in a position facing the protrusion 45. Therefore, for example, by screwing the bolt 35 that screws into the screw hole 34 from inside the elevator hoistway and pressing the tip of the bolt against the hoisting machine 4, the inclination of the hoisting machine 4 can be adjusted from inside the elevator hoistway.

[0045] (C3) In (C1) above, as shown in Figures 2, 3, 8, etc., the bracket 43 serving as the posture maintaining unit includes a facing portion 43b that abuts against the vertical frames 31a, 31b that are the surfaces of the frame 3 facing the hoist, and a mounting portion 43a that is mounted on the hoist 4 and is adjustable in position in the direction of the surface facing the hoist. Because the position of the mounting portion 43a is adjustable, the facing portion 43b can be appropriately abutted against the vertical frames 31a, 31b regardless of the amount of tilt adjustment.

[0046] (C4) In the above (C3), as shown in Fig. 4 etc., the facing portion 43b has a buffer member 44 that abuts against the vertical frames 31a, 31b to suppress the transmission of vibration. By providing the buffer member 44, the transmission of vibration between the hoisting machine 4 and the platform 3 is suppressed.

[0047] (C5) In the above (C1), the frame 3 may be configured to be attached to the guide rails 5, 7 of the car 2 or counterweight 6 that are driven up and down by the hoisting machine 4. This eliminates the need for a dedicated attachment part for attaching the frame 3 to the elevator hoistway, thereby reducing costs.

[0048] (C6) In (C1) above, as shown in Fig. 3, the positions of the support parts 32a to 32d that support the hoisting machine 4 coincide with the position of the sheave 41 in the extending direction of the axis 410 of the sheave 41. This can reduce the effect of tilting the hoisting machine housing 40 when a suspended load is applied to the sheave 41.

[0049] (C7) In the above (C4), as shown in Figures 2 to 4, the hoisting machine 4 includes first and second fixed parts 42c, 42d provided at a position vertically below the axis 410 of the sheave 41, and third and fourth fixed parts 42a, 42b provided at a position vertically above the axis 410 of the sheave 41, and the frame 3 includes vertical frames 31a, 31b arranged in parallel in the horizontal direction and extending vertically, a first support part 32c provided on the vertical frame 31a and supporting the fixed part 42c via a vibration-isolating member 33, and a second support part 32d provided on the vertical frame 31b and supporting the fixed part 42d via the vibration-isolating member 33. , a third support portion 32a provided on the vertical frame 31a and supporting the fixed portion 42a via the vibration-damping member 33, a fourth support portion 32b provided on the vertical frame 31b and supporting the fixed portion 42b via the vibration-damping member 33, screw holes 34 formed at positions facing the fixed portion 42c of the vertical frame 31a and at positions facing the fixed portion 42d of the vertical frame 31b, an L-shaped first bracket 43 whose mounting portion 43a is attached to the fixed portion 42c and whose opposing portion 43b and the mounting portion 43a are perpendicular to each other, and an L-shaped second bracket 43 whose mounting portion 43a is attached to the fixed portion 42d and whose opposing portion 43b and the mounting portion 43a are perpendicular to each other.

[0050] (C8) A method for installing a hoisting machine 4 on the hoisting machine installation frame described in (C1) above, in which, as shown in Figures 6 to 8, the hoisting machine 4 is fixed to a plurality of support parts 32a to 32d via the vibration-isolating members 33, the tips of bolts 35 screwed into threaded holes 34 of vertical frames 31a and 31b as tilt adjustment parts from inside the elevator hoistway are abutted against the hoisting machine 4, the bolts 35 are screwed in so that the axis 410 of the sheave 41 is horizontal, and a bracket 43 as an attitude maintaining part is attached to the hoisting machine 4 and abutted against the vertical frames 31a and 31b which are the hoist-machine facing surfaces of the frame 3. In this way, the tilt of the hoisting machine 4 can be easily adjusted from inside the elevator hoistway.

[0051] The above-described embodiments and various modifications are merely examples, and the present invention is not limited to these details as long as the features of the invention are not impaired. Furthermore, although various embodiments and modifications have been described above, the present invention is not limited to these details. Other aspects conceivable within the scope of the technical idea of ​​the present invention are also included within the scope of the present invention. [Explanation of symbols]

[0052] 1...Elevator hoistway, 2...Car, 3...Frame, 4...Hoisting machine, 5, 7...Guide rail, 6...Counterweight, 11a, 11b...Rail, 30a, 30b, 60...Beam, 31a, 31b...Vertical frame, 32a to 32d, 60a...Support part, 33, 61...Vibration-proof member, 34...Screw hole, 35...Bolt, 40...Hoisting machine housing, 41...Sheave, 42a to 42d...Fixing part, 43...Bracket, 43a...Mounting part, 43b...Facing part, 44...Buffer member, 45...Convex part, 50...Inclination measuring device, 310...Metal plate, 410...Axis core, 430...Concave part, 431...Elongated hole

Claims

1. A traction machine installation stand that is provided in an elevator hoistway and supports a traction machine, The hoisting machine has a housing, a sheave protruding from the housing, first and second fixed portions provided at positions vertically below the axis of the sheave, and third and fourth fixed portions provided at positions vertically above the axis of the sheave, and the center of gravity is located rearward of the sheave in the protruding direction of the sheave, The traction machine installation stand is first and second frame portions arranged in parallel in the horizontal direction and each extending in the vertical direction; a first support portion provided on the first frame portion and supporting the first fixed portion at a distance from the first frame portion via a vibration-isolating rubber; a second support portion provided on the second frame portion and supporting the second fixed portion at a distance from the second frame portion via a vibration-isolating rubber; a third support portion provided on the first frame portion and supporting the third fixed portion via a vibration-isolating rubber; a fourth support portion provided on the second frame portion and supporting the fourth fixed portion via a vibration-isolating rubber; a first bracket attached to the first fixing portion and having a first opposing portion facing the first frame portion and abutting the first frame portion directly or indirectly; a second bracket attached to the second fixing portion and having a second opposing portion facing the second frame portion and abutting directly or indirectly against the second frame portion; a first screw hole penetrating the first frame portion is formed at a position of the first frame portion facing the first fixing portion; A traction machine installation stand characterized in that a second screw hole penetrating the second frame portion is formed at a position of the second frame portion opposite the second fixing portion.

2. The traction machine installation stand according to claim 1, the first bracket has a first mounting portion that allows the position of the first opposing portion relative to the first frame portion to be adjusted; The second bracket has a second mounting portion that allows the position of the second opposing portion relative to the second frame portion to be adjusted.

3. The traction machine installation stand according to claim 1, a buffer member for suppressing vibration transmission is sandwiched between the first frame portion and the first opposing portion, and between the second frame portion and the second opposing portion, the first opposing portion indirectly contacts the first frame portion via the buffer member, The traction machine installation stand is characterized in that the second opposing portion indirectly abuts against the second frame portion via the buffer member.

4. The traction machine installation stand according to claim 1, The traction machine installation stand is characterized in that it is attached to a guide rail of a car or a counterweight that is driven up and down by the traction machine.

5. The traction machine installation stand according to claim 1, A traction machine installation stand that supports the traction machine so that the positions of the first support portion, the second support portion, the third support portion, and the fourth support portion coincide with the position of the sheave in the extension direction of the axis of the sheave.

6. A hoisting machine installation method for installing a hoisting machine on the hoisting machine installation stand according to any one of claims 1 to 5, carrying out a first step of fixing the first fixed portion, the second fixed portion, the third fixed portion, and the fourth fixed portion of the hoisting machine to the first support portion, the second support portion, the third support portion, and the fourth support portion, respectively, via the vibration-isolating rubber; After carrying out the first step, a second step is carried out in which bolts are screwed into the first screw holes of the first frame portion and the second screw holes of the second frame portion from inside the elevator hoistway, and tips of the bolts are brought into contact with the first fixing portion and the second fixing portion, respectively, and the screwed states of the bolts in the first screw holes and the second screw holes are adjusted so that the axis of the sheave is horizontal; a third step of, after carrying out the second step, fixing the first bracket to the first fixed portion by directly or indirectly abutting the first frame portion against the first opposing portion, fixing the second bracket to the second fixed portion by directly or indirectly abutting the second frame portion against the second opposing portion, and then removing the bolts from the first screw holes and the second screw holes, respectively.

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