Elevator hoist shaft fixing jig

Abstract

To provide a shaft fixing jig for an elevator hoisting machine that can prevent teeth of a worm wheel from being damaged when removing a bearing from the shaft.SOLUTION: A shaft fixing jig 60 includes a base member 61, and a spacer member 65 that is movable in a longitudinal direction of a shaft 26 of a hoisting machine 20 with respect to the base member 61. The spacer member 65 includes a head part 66 that can come into contact with a brake wheel 50 of the hoisting machine 20. The base member 61 is fixed to a portion of the hoisting machine 20 that faces the brake wheel 50 in the longitudinal direction of the shaft 26.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present disclosure relates to a shaft fixing jig for an elevator hoisting machine. [Background technology]

[0002] Japanese Patent Application Laid-Open Publication No. 2016-172604 (Patent Document 1) discloses an elevator hoist including a motor, a shaft, a sheave, a bearing, and a worm wheel. An elevator rope is wound around the sheave. One end of the rope is connected to the car, and the other end of the rope is connected to the counterweight. The shaft includes a worm portion. The worm portion is engaged with the teeth of the worm wheel. The motor rotates the shaft. The bearing supports the shaft so that it can rotate. When the motor rotates the shaft, the worm wheel engaged with the worm portion rotates. When the worm wheel rotates, the sheave rotates, causing the car and counterweight to move. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-172604 Summary of the Invention [Problem to be solved by the invention]

[0004] In order to replace a bearing, the bearing is removed from the shaft. However, in Patent Document 1, when removing the bearing from the shaft, the shaft may move, which may damage the teeth of the worm wheel that meshes with the worm portion of the shaft. An object of the present disclosure is to provide a shaft fixing jig for an elevator hoisting machine that can prevent damage to the teeth of the worm wheel when removing the bearing from the shaft. [Means for solving the problem]

[0005] The presently disclosed shaft fixing jig for an elevator hoisting machine includes a base member and a spacer member movable relative to the base member in the longitudinal direction of the shaft of the elevator hoisting machine. The spacer member includes a head portion that can abut against a brake wheel of the elevator hoisting machine. The base member is fixed to a portion of the elevator hoisting machine that faces the brake wheel in the longitudinal direction of the shaft using a fixing member. [Effects of the Invention]

[0006] The elevator hoisting machine shaft fixing jig of the present disclosure can prevent movement of the shaft rotatably supported by the bearings when replacing the bearings of the elevator hoisting machine.The elevator hoisting machine shaft fixing jig of the present disclosure can prevent damage to the teeth of the worm wheel when replacing the bearings of the elevator hoisting machine. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic front view of an elevator hoisting machine shaft fixing jig according to an embodiment. FIG. [Figure 2] 2 is a schematic cross-sectional view of the elevator hoisting machine shaft fixing jig of the embodiment, taken along the cross-sectional line II-II shown in FIG. 1. [Figure 3] 1 is a schematic diagram showing the overall configuration of an elevator including an elevator hoisting machine to which an elevator hoisting machine shaft fixing jig according to an embodiment of the present invention is applied. [Figure 4] 1 is a schematic enlarged side view of an elevator hoisting machine to which an elevator hoisting machine shaft fixing jig according to an embodiment of the present invention is applied. [Figure 5] 1 is a schematic partially enlarged front view of an elevator hoisting machine to which an elevator hoisting machine shaft fixing jig according to an embodiment of the present invention is applied. [Figure 6] 1 is a schematic partially enlarged side view of an elevator hoisting machine to which an elevator hoisting machine shaft fixing jig according to an embodiment of the present invention is applied. [Figure 7] 1 is a schematic partially enlarged side view of an elevator hoisting machine to which an elevator hoisting machine shaft fixing jig according to an embodiment of the present invention is applied. [Figure 8] 1 is a schematic partially enlarged side view of an elevator hoisting machine to which an elevator hoisting machine shaft fixing jig according to an embodiment of the present invention is applied. [Figure 9] FIG. 10 is a schematic front view of an elevator hoisting machine shaft fixing jig according to a modified example of the embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, embodiments of the present disclosure will be described. Note that the same reference numerals are used to designate the same components, and the description thereof will not be repeated.

[0009] 1 and 2 is a jig used to prevent the shaft 26 of the elevator hoisting machine (hoisting machine 20) from moving when replacing the bearing 33, as shown in FIGS. 4, 6, 7, and 8. The hoisting machine 20 to which the shaft fixing jig 60 is applied and the elevator 1 equipped with the hoisting machine 20 will be described with reference to FIGS. 3 to 5.

[0010] Referring to Fig. 3, elevator 1 is provided in building 2. Elevator 1 includes, for example, a hoistway 3, a plurality of landings including a lowest floor landing 6 and a top floor landing 7, a machine room 8, a hoisting machine 20, a deflector 15, a car 10, a counterweight 11, a rope 12, and a buffer 18.

[0011] The pit 4 is the portion of the elevator shaft 3 below the lowest floor landing 6. The pit floor 5 is the bottom surface of the elevator shaft 3. The machine room 8 is provided above the elevator shaft 3. A hoisting machine 20 and a deflector sheave 15 are installed in the machine room 8. One end of the rope 12 is connected to the car 10. The other end of the rope 12 is connected to the counterweight 11. The hoisting machine 20 includes a sheave 21 and a sheave shaft 22. The rope 12 is wound around the sheave 21. The sheave 21 is connected to one end of the sheave shaft 22. The rope 12 moves as the sheave 21 rotates. The car 10 moves up and down the elevator shaft 3. The counterweight 11 moves up and down the elevator shaft 3 in the opposite direction to the car 10.

[0012] The buffer 18 is installed on the pit floor 5. The buffer 18 is arranged below the counterweight 11. If the rope 12 breaks and the counterweight 11 falls freely, the buffer 18 can mitigate the impact when the counterweight 11 hits the pit floor 5. The top of the buffer 18 is located below the lowest landing 6.

[0013] 4 and 5, the hoist 20 includes, in addition to the sheave 21 (see FIG. 3) and the sheave shaft 22, for example, a frame 23, a motor case 24, a worm wheel 25, a shaft 26, a motor 30, a bearing 31, a bearing 33, a bearing housing 34, a ring nut 35, a bearing cover 36, a bearing 41, an oil seal 42, a bearing housing 43, a pressing member 45, a brake wheel 50, and a brake shoe 55.

[0014] The frame 23 is made of a metal such as iron and houses, for example, a worm wheel 25, a shaft 26, a bearing housing 34, a bearing 41, an oil seal 42, a brake wheel 50, and a brake shoe 55.

[0015] Worm wheel 25 is connected to the other end of sheave shaft 22. Shaft 26 includes a worm portion 27. Teeth of worm wheel 25 mesh with worm portion 27. Worm wheel 25 and worm portion 27 form a worm gear. A side surface 26a of the portion of shaft 26 where worm portion 27 is not formed is a curved side surface such as a cylindrical side surface.

[0016] The motor case 24 houses a motor 30 and a bearing 31. The motor 30 rotates a shaft 26. The shaft 26 is, for example, a motor shaft. The bearing 31 is disposed at one end of the shaft 26. The bearing 31 supports the shaft 26 so that it can rotate.

[0017] The bearing housing 34 accommodates the bearing 33. The bearing housing 34 includes an opening 34a. The bearing 33 is accommodated in or removed from the bearing housing 34 through the opening 34a of the bearing housing 34. The bearing 33 is disposed at one end of the shaft 26. The bearing 31 rotatably supports the shaft 26. The bearing 31 is, for example, a thrust bearing that supports a load applied in the thrust direction (longitudinal direction) of the shaft 26. The ring nut 35 prevents the bearing 33 from coming off the shaft 26 and positions the bearing 33 in the longitudinal direction of the shaft 26. The bearing cover 36 is fixed to the bearing housing 34 using, for example, bolts (not shown). The bearing cover 36 closes the opening 34a of the bearing housing 34.

[0018] The bearing 41 is disposed between the bearing 31 and the bearing 33 in the longitudinal direction of the shaft 26. The bearing 41 is disposed between the motor 30 and the worm portion 27 in the longitudinal direction of the shaft 26. The bearing 41 is disposed between the brake wheel 50 and the worm portion 27 in the longitudinal direction of the shaft 26. The bearing 41 rotatably supports the shaft 26. The oil seal 42 seals out the lubricant (e.g., lubricating oil) of the bearing 41. The bearing housing 43 houses the bearing 41 and the oil seal 42. The bearing housing 43 includes a stopper 44. The stopper 44 prevents the bearing 41 from coming off the shaft 26 and also positions the bearing 41 in the longitudinal direction of the shaft 26.

[0019] The pressing member 45 presses the oil seal 42. The pressing member 45 includes, for example, a pressing plate 46 and a bolt 47. The pressing plate 46 faces the oil seal 42. When the bolt 47 is tightened, the pressing plate 46 presses the oil seal 42.

[0020] The brake wheel 50 includes a thin-walled portion 51, an outer ring portion 52, and a boss portion 53. The thin-walled portion 51 is connected to the outer ring portion 52 and the boss portion 53 in the radial direction of the brake wheel 50. The thin-walled portion 51 is formed thinner than both the outer ring portion 52 and the boss portion 53. The outer ring portion 52 is disposed radially outward of the brake wheel 50 relative to the thin-walled portion 51. An outer peripheral side surface 52a of the outer ring portion 52 is the outer peripheral side surface 50a of the brake wheel 50.

[0021] The boss portion 53 is disposed radially inward of the brake wheel 50 with respect to the thin-walled portion 51. The boss portion 53 has a boss hole 53a. The shaft 26 is fitted into the boss hole 53a. The boss portion 53 includes a top surface 53b. In a plan view from the longitudinal direction of the shaft 26 (the axial direction of the shaft 26), the top surface 53b of the boss portion 53 has a ring shape. The top surface 53b of the boss portion 53 is the surface of the boss portion 53 that is farthest from the thin-walled portion 51. The top surface 53b of the boss portion 53 is the surface of the boss portion 53 that is closest to the portion of the hoisting machine 20 that faces the brake wheel 50 in the longitudinal direction of the shaft 26.

[0022] 5, the brake shoe 55 faces the outer peripheral side surface 50a of the brake wheel 50. The brake shoe 55 is movable in the radial direction of the brake wheel 50. When the brake shoe 55 is pressed against the brake wheel 50, the rotation of the brake wheel 50 stops. When the rotation of the brake wheel 50 stops, the shaft 26, the worm wheel 25, the sheave shaft 22, and the sheave 21 also stop rotating, and the car 10 (see FIG. 3) and the rope 12 (see FIG. 3) stop.

[0023] The configuration of a shaft fixing jig 60 of this embodiment will be described with reference to Figures 1 and 2. The shaft fixing jig 60 includes a base member 61, a spacer member 65, a fixing piece 70, and a locking member 68.

[0024] The base member 61 is formed of a metal such as stainless steel. The base member 61 includes a main surface 61a, a main surface 61b opposite to the main surface 61a, a side surface 61c, and a side surface 61d. The main surface 61a and the main surface 61b face each other in the longitudinal direction of the shaft 26. As shown in FIGS. 4 and 6 to 8, the main surface 61b faces a portion of the hoisting machine 20 facing the brake wheel 50 in the longitudinal direction of the shaft 26. The main surface 61b may contact a portion of the hoisting machine 20 facing the brake wheel 50 in the longitudinal direction of the shaft 26. The base member 61 is fixed to a portion of the hoisting machine 20 facing the brake wheel 50 in the longitudinal direction of the shaft 26. The portion of the hoisting machine 20 facing the brake wheel 50 in the longitudinal direction of the shaft 26 is, for example, an oil seal 42. The side surface 61c is connected to the main surface 61a and the main surface 61b. The side surface 61c is a long side surface of the base member 61. The side surface 61d is connected to the main surface 61a and the main surface 61b. The side surface 61d is a short side surface of the base member 61.

[0025] A female screw hole 62 is provided in the base member 61. The female screw hole 62 is provided in the main surface 61a. The female screw hole 62 may extend from the main surface 61a to the main surface 61b. The base member 61 is provided with a recess 61f capable of receiving the shaft 26. The recess 61f is curved along the side surface 26a of the shaft 26. The recess 61f is provided in, for example, the side surface 61c.

[0026] The spacer member 65 is movable relative to the base member 61 in the longitudinal direction of the shaft 26 (in the normal direction to the principal surface 61a and the normal direction to the principal surface 61b). The spacer member 65 is, for example, a bolt that can be threaded into the female threaded hole 62. The spacer member 65 includes a head portion 66 and a body portion 67. The longitudinal direction of the body portion 67 is the longitudinal direction of the shaft 26 (in the normal direction to the principal surface 61a and the normal direction to the principal surface 61b). A thread groove is formed on the side surface of the body portion 67. The body portion 67 can be threaded into the female threaded hole 62. The head portion 66 is connected to the body portion 67. The head portion 66 can abut against the brake wheel 50 (see FIGS. 4 and 6 to 8). More specifically, the head portion 66 can abut against the boss portion 53 (top surface 53b) of the brake wheel 50.

[0027] In this embodiment, the number of spacer members 65 is two. The number of spacer members 65 may be one, or three or more. When the shaft fixing jig 60 includes multiple spacer members 65, the multiple spacer members 65 may be arranged along the side surface 26a of the shaft 26 or the top surface 53b of the ring-shaped boss portion 53.

[0028] 2, the locking member 68 locks the position of the spacer member 65 in the longitudinal direction of the shaft 26 (the normal direction of the main surface 61a, the normal direction of the main surface 61b, and the longitudinal direction of the body portion 67). The locking member 68 is, for example, a nut onto which the spacer member 65 can be screwed. The locking member 68 may abut against the main surface 61a.

[0029] 1 and 2, the fixing piece 70 is fixed to the base member 61 using a fixing member 75 such as a bolt. More specifically, the fixing piece 70 is fixed to the side surface 61c of the base member 61.

[0030] The fixing piece 70 is, for example, an L-shaped metal plate. The fixing piece 70 includes a first plate portion 71 and a second plate portion 72. The first plate portion 71 faces the side surface 61c of the base member 61 and is fixed to the side surface 61c of the base member 61 using a fixing member 75. The second plate portion 72 is connected to the first plate portion 71. The second plate portion 72 extends along the main surface 61b of the base member 61. The normal direction of the second plate portion 72 is, for example, perpendicular to the normal direction of the first plate portion 71. The second plate portion 72 includes a surface 72a and a surface 72b opposite to the surface 72a. The surface 72a may be flush with the main surface 61b. A hole 73 is provided in the second plate portion 72. The hole 73 extends from the surface 72a to the surface 72b.

[0031] As shown in Figures 1, 4, and 6 to 8, the base member 61 is fixed to a portion of the hoist 20 that faces the brake wheel 50 in the longitudinal direction of the shaft 26 (e.g., the oil seal 42) using a fixing piece 70 and a fixing member 76 that fixes the fixing piece 70. The fixing member 76 fixes the fixing piece 70. This prevents the shaft fixing jig 60 from falling off the frame 23. The fixing member 76 is, for example, a pressing member 45 that presses the oil seal 42. The pressing plate 46 is sandwiched between the head of the bolt 47 and the surface 72b of the second plate portion 72. The body of the bolt 47 passes through the hole 73 and the pressing plate 46. When the bolt 47 is tightened, the pressing plate 46 presses the oil seal 42.

[0032] In order to replace bearing 33, bearing 33 is removed from shaft 26. A method for removing bearing 33 from shaft 26 using shaft fixing jig 60 of this embodiment and the function of shaft fixing jig 60 will be described with reference to Figures 4 to 8.

[0033] The motor 30 is stopped, and the brake shoe 55 is pressed against the outer peripheral side surface 50a of the brake wheel 50. The rotation of the shaft 26 stops. The bolt 47 is loosened, and the retainer plate 46 and the bolt 47 are removed from the portion of the hoisting machine 20 that faces the brake wheel 50 in the longitudinal direction of the shaft 26 (for example, the oil seal 42).

[0034] As shown in FIG. 6, a shaft fixing jig 60 is installed between the brake wheel 50 and a portion of the hoisting machine 20 facing the brake wheel 50 in the longitudinal direction of the shaft 26 (for example, the oil seal 42). Specifically, the recess 61f of the base member 61 is arranged along the side surface 26a of the shaft 26. A part of the shaft 26 is arranged within the recess 61f. The base member 61 is arranged on a portion of the hoisting machine 20 facing the brake wheel 50 in the longitudinal direction of the shaft 26. The main surface 61b of the base member 61 may be in contact with the portion of the hoisting machine 20 facing the brake wheel 50 in the longitudinal direction of the shaft 26.

[0035] Using the fixing piece 70 and the fixing member 76, the base member 61 is fixed to a portion of the hoisting machine 20 that faces the brake wheel 50 in the longitudinal direction of the shaft 26. Specifically, the pressure plate 46 is placed on the surface 72b of the second plate portion 72. The bolt 47 is tightened. In this way, the pressure plate 46 and the second plate portion 72 press the oil seal 42, and the base member 61 is fixed to a portion of the hoisting machine 20 that faces the brake wheel 50 in the longitudinal direction of the shaft 26 using the fixing piece 70 and the fixing member 76 (pressure plate 46 and bolt 47). The base member 61 is prevented from falling off the frame 23.

[0036] The spacer member 65 is moved toward the boss portion 53 of the brake wheel 50. For example, if the spacer member 65 is a bolt that can be threaded into the female threaded hole 62, rotating the spacer member 65 moves the spacer member 65 toward the boss portion 53 of the brake wheel 50. The head portion 66 of the spacer member 65 abuts against the top surface 53b of the boss portion 53. The locking member 68 is used to lock the position of the spacer member 65 in the longitudinal direction of the shaft 26. For example, if the locking member 68 is a nut, the position of the spacer member 65 is locked by tightening the nut. The nut may abut against the main surface 61a of the base member 61.

[0037] 7, the bolts (not shown) are loosened to remove the bearing cover 36 from the bearing housing 34. The ring nut 35 is removed from the shaft 26.

[0038] As shown in Figure 8, the bearing housing 34 is removed from the frame 23 using a jack bolt 80. Specifically, the body of the jack bolt 80 is passed through a threaded hole (not shown) in the bearing housing 34, and the tip of the body of the jack bolt 80 is brought into contact with the frame 23. While the tip of the body of the jack bolt 80 is in contact with the frame 23, the jack bolt 80 is rotated. The bearing housing 34 moves in the longitudinal direction of the shaft 26 and is removed from the frame 23. The bearings 33 housed in the bearing housing 34 are also removed from the shaft 26.

[0039] When removing the bearing 33 from the shaft 26, a shaft fixing jig 60 is installed between a portion of the hoisting machine 20 facing the brake wheel 50 in the longitudinal direction of the shaft 26 (e.g., the oil seal 42) and the brake wheel 50 (boss portion 53). The shaft 26 is fitted into a boss hole 53a of the boss portion 53. Therefore, when removing the bearing 33 from the shaft 26, the shaft fixing jig 60 prevents the brake wheel 50 and the shaft 26 from moving in the longitudinal direction of the shaft 26. When removing the bearing 33 from the shaft 26, damage to the teeth of the worm wheel 25 meshing with the worm portion 27 of the shaft 26 can be prevented. Furthermore, when removing the bearing 33 from the shaft 26, damage to the stopper 44 caused by the bearing 41 pressing against the stopper 44 can also be prevented.

[0040] (Variation) 9, the base member 61 is curved along the side surface 26a of the shaft 26. The side surface 61c of the base member 61 is curved along the side surface 26a of the shaft 26. The side surface 61c of the base member 61 is a recess 61f that can receive the shaft 26. The fixing piece 70 is fixed to the side surface 61d of the base member 61 using a fixing member 75.

[0041] The shaft fixing jig 60 does not have to be equipped with the fixing piece 70. The base member 61 may be fixed to a portion of the hoisting machine 20 that faces the brake wheel 50 in the longitudinal direction of the shaft 26 using a fixing member 76. For example, a through hole (not shown) may be provided in the base member 61, and a female threaded hole (not shown) may be provided in a portion of the hoisting machine 20 that faces the brake wheel 50 in the longitudinal direction of the shaft 26, and the fixing member 76 may pass through the through hole and be screwed into the female threaded hole.

[0042] The effects of the shaft fixing jig 60 for an elevator hoisting machine (hoisting machine 20) of this embodiment will be described.

[0043] The shaft fixing jig 60 for an elevator hoisting machine (hoisting machine 20) of this embodiment includes a base member 61 and a spacer member 65 that is movable in the longitudinal direction of the shaft 26 of the elevator hoisting machine (hoisting machine 20) relative to the base member 61. The spacer member 65 includes a head portion 66 that can come into contact with a brake wheel 50 of the elevator hoisting machine. The base member 61 is fixed, using a fixing member 76, to a portion of the elevator hoisting machine that faces the brake wheel 50 in the longitudinal direction of the shaft 26.

[0044] When removing the bearing 33 from the shaft 26, the shaft fixing jig 60 prevents the brake wheel 50 and the shaft 26 from moving in the longitudinal direction of the shaft 26. Therefore, when removing the bearing 33 from the shaft 26, damage to the teeth of the worm wheel 25 that mesh with the worm portion 27 of the shaft 26 can be prevented. In addition, when removing the bearing 33 from the shaft 26, damage to the stopper 44 caused by the bearing 41 pressing against the stopper 44 can be prevented.

[0045] The shaft fixing jig 60 for an elevator hoisting machine (hoisting machine 20) of this embodiment further includes a locking member 68 that locks the position of the spacer member 65 in the longitudinal direction of the shaft .

[0046] The locking member 68 more reliably prevents the spacer member 65 from moving in the longitudinal direction of the shaft 26 when the bearing 33 is removed from the shaft 26. Therefore, damage to the teeth of the worm wheel 25 meshing with the worm portion 27 of the shaft 26 can be more reliably prevented when the bearing 33 is removed from the shaft 26. In addition, damage to the stopper 44 caused by the bearing 41 pressing against the stopper 44 can be more reliably prevented when the bearing 33 is removed from the shaft 26.

[0047] In the shaft fixing jig 60 for an elevator hoisting machine (hoisting machine 20) of this embodiment, the locking member 68 is a nut onto which the spacer member 65 can be screwed.

[0048] Therefore, the cost of the shaft fixing jig 60 for the elevator hoisting machine (hoisting machine 20) is reduced.

[0049] In a shaft fixing jig 60 for an elevator hoist (hoist 20) of this embodiment, a female screw hole 62 is provided in a base member 61. The spacer member 65 is a bolt that can be screwed into the female screw hole 62.

[0050] Therefore, the cost of the shaft fixing jig 60 for the elevator hoisting machine (hoisting machine 20) is reduced.

[0051] In the shaft fixing jig 60 for an elevator hoist (hoist 20) of this embodiment, the head portion 66 can come into contact with the boss portion 53 of the brake wheel 50, into which the shaft 26 is fitted.

[0052] The size of the shaft fixing jig 60 for an elevator hoist (hoist 20) can be reduced. The shaft fixing jig 60 can be easily carried and stored in a smaller space.

[0053] In a shaft fixing jig 60 for an elevator hoisting machine (hoisting machine 20) of this embodiment, a base member 61 is provided with a recess 61f capable of receiving the shaft .

[0054] Therefore, the spacer member 65 can be disposed along the top surface 53b of the ring-shaped boss portion 53. The head portion 66 of the spacer member 65 can be more reliably brought into contact with the boss portion 53 of the brake wheel 50. This more reliably prevents damage to the teeth of the worm wheel 25 that mesh with the worm portion 27 of the shaft 26 when removing the bearing 33 from the shaft 26. Furthermore, this more reliably prevents damage to the stopper 44 when the bearing 41 presses against the stopper 44 when removing the bearing 33 from the shaft 26.

[0055] In the shaft fixing jig 60 for an elevator hoisting machine (hoisting machine 20) of this embodiment, the base member 61 is curved along the side surface 26a of the shaft.

[0056] Therefore, the spacer member 65 can be disposed along the top surface 53b of the ring-shaped boss portion 53. The head portion 66 of the spacer member 65 can be more reliably brought into contact with the boss portion 53 of the brake wheel 50. This more reliably prevents damage to the teeth of the worm wheel 25 that mesh with the worm portion 27 of the shaft 26 when removing the bearing 33 from the shaft 26. Furthermore, this more reliably prevents damage to the stopper 44 when the bearing 41 presses against the stopper 44 when removing the bearing 33 from the shaft 26.

[0057] The shaft fixing jig 60 for an elevator hoisting machine (hoisting machine 20) of this embodiment further includes a fixing piece 70 fixed to a base member 61. The base member 61 is fixed to a portion of the elevator hoisting machine that faces the brake wheel 50 in the longitudinal direction of the shaft 26, using the fixing piece 70 and a fixing member 76 that fixes the fixing piece 70.

[0058] This increases the degree of freedom in arranging the fixing member 76, thereby increasing the degree of freedom in arranging the shaft fixing jig 60. The shaft fixing jig 60 can be arranged in a more appropriate position.

[0059] In the shaft fixing jig 60 for an elevator hoist (hoist 20) of this embodiment, the fixing member 76 is a pressing member 45 that presses the oil seal 42 of the bearing 41 that rotatably supports the shaft 26.

[0060] The pressing member 45 that is originally included in the elevator hoist (hoist 20) is used as the fixing member 76. There is no need to add a new part for fixing the shaft fixing jig 60 to the hoist 20. The cost for fixing the shaft fixing jig 60 to the hoist 20 is reduced.

[0061] The embodiments and modifications disclosed herein should be considered to be illustrative in all respects and not restrictive. The scope of the present disclosure is defined by the claims, not the above description, and is intended to include all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0062] 1 elevator, 2 building, 3 hoistway, 4 pit, 5 pit floor, 6 lowest floor landing, 7 highest floor landing, 8 machine room, 10 car, 11 counterweight, 12 rope, 15 deflector, 18 buffer, 20 hoist, 21 sheave, 22 sheave shaft, 23 frame, 24 motor case, 25 worm wheel, 26 shaft, 26a, 61c, 61d side, 27 worm part, 30 motor, 31 bearing, 33 bearing, 34 bearing housing, 34a opening, 35 ring nut, 36 bearing cover, 41 bearing, 42 oil seal, 43 bearing housing, 44 stopper, 45 pressing member, 46 holding plate, 47 bolt, 50 brake wheel, 50a outer peripheral side, 51 thin-walled part, 52 Outer ring portion, 52a outer peripheral side surface, 53 boss portion, 53a boss hole, 53b top surface, 55 brake shoe, 60 shaft fixing jig, 61 base member, 61a, 61b main surface, 61f recess, 62 female thread hole, 65 spacer member, 66 head portion, 67 body portion, 68 locking member, 70 fixing piece, 71 first plate portion, 72 second plate portion, 72a, 72b surface, 73 hole, 75 fixing member, 76 fixing member, 80 jack bolt.

Claims

1. A base member; a spacer member movable relative to the base member in the longitudinal direction of the shaft of the elevator hoisting machine, the spacer member includes a head portion that can come into contact with a brake wheel of the elevator hoisting machine, The base member is fixed to a portion of the elevator hoist that faces the brake wheel in the longitudinal direction using a fixing member.

2. The shaft fixing jig for an elevator hoisting machine according to claim 1 , further comprising a locking member that locks the position of the spacer member in the longitudinal direction of the shaft.

3. 3. The elevator hoisting machine shaft fixing jig according to claim 2, wherein the locking member is a nut onto which the spacer member can be threaded.

4. The base member is provided with a female screw hole, 4. The shaft fixing jig for an elevator hoisting machine according to claim 1, wherein the spacer member is a bolt that can be threaded into the female threaded hole.

5. 5. The shaft fixing jig for an elevator hoisting machine according to claim 1, wherein the head portion is capable of abutting against a boss portion of the brake wheel, into which the shaft is fitted.

6. The shaft fixing jig for an elevator hoisting machine according to claim 5, wherein the base member is provided with a recess capable of receiving the shaft.

7. The shaft fixing jig for an elevator hoisting machine according to claim 5, wherein the base member is curved along a side surface of the shaft.

8. Further, a fixing piece is fixed to the base member, 8. The shaft fixing jig for an elevator hoisting machine according to claim 1, wherein the base member is fixed to the portion of the elevator hoisting machine using the fixing piece and the fixing member that fixes the fixing piece.

9. 9. The shaft fixing jig for an elevator hoisting machine according to claim 1, wherein the fixing member is a pressing member that presses an oil seal of a bearing that rotatably supports the shaft.

Images