Elevator device

Abstract

In an elevator device, a first hoist has a sheave shaft and is provided in a hoistway. The second hoist has a second hoist body and a second drive sheave. The suspension body is wound and hung on the second driving rope wheel. A load in the vertical direction acting on the second hoist from the suspension body is supported by the first hoist at the sheave shaft. The second hoist further has a vibration stopper. The vibration stopper is in contact with the first hoisting machine and prevents the second hoisting machine body from rotating with respect to the first hoisting machine about the sheave shaft.

Description

Technical Field

[0001] The present disclosure relates to an elevator device. Background Art

[0002] In the conventional elevator device, the vertical load acting on the newly installed traction machine is supported by the hoistway through the wire and the sheave of the existing traction machine. In addition, the newly installed traction machine is connected to the guide rail through a plurality of vibration stoppers. For example, the horizontal load acting on the newly installed traction machine due to an earthquake is supported by the guide rail through a plurality of vibration stoppers (for example, refer to Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent No. 6020735 Summary of the invention

[0006] Problems to be solved by the invention

[0007] In the conventional elevator apparatus as described above, it is necessary to connect the newly installed hoisting machine to the guide rails via a plurality of vibration stoppers, and therefore it takes time and effort to install the newly installed hoisting machine.

[0008] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to obtain an elevator apparatus capable of easily mounting a second hoisting machine using a first hoisting machine.

[0009] Means for solving problems

[0010] The elevator device disclosed in the present invention comprises: a first hoisting machine, which is arranged in a hoistway and has a sheave shaft; a second hoisting machine, which has a second hoisting machine body and a second driving sheave, and the second driving sheave can rotate relative to the second hoisting machine body; a suspension body, which is hung around the second driving sheave; and a car, which is suspended by the suspension body and rises and falls in the hoistway by the rotation of the second driving sheave, and the vertical load acting on the second hoisting machine from the suspension body is supported by the first hoisting machine at the sheave shaft, and the second hoisting machine also has a vibration stopper, which contacts the first hoisting machine to prevent the second hoisting machine body from rotating relative to the first hoisting machine about the sheave shaft.

[0011] In addition, the elevator device disclosed in the present invention comprises: a first hoisting machine, which has a first hoisting machine body installed in a hoistway, a sheave shaft installed in the first hoisting machine body, and a first hoisting machine brake installed in the first hoisting machine body; a second hoisting machine, which has a second hoisting machine body fixed to the sheave shaft, and a second driving sheave rotatable relative to the second hoisting machine body; a suspension body, which is hung around the second driving sheave; and a car, which is suspended by the suspension body and is raised and lowered in the hoistway by the rotation of the second driving sheave, the vertical load acting on the second hoisting machine from the suspension body is supported by the first hoisting machine at the sheave shaft, and the rotation of the sheave shaft is blocked by the first hoisting machine brake.

[0012] In addition, the elevator device disclosed in the present invention comprises: a first traction machine, which is arranged at the bottom of the hoistway and has a rotating body; a second traction machine, which has a second traction machine body and a second driving sheave, and the second driving sheave can rotate relative to the second traction machine body; a suspension body, which is hung around the second driving sheave; and a car, which is suspended by the suspension body and is raised and lowered in the hoistway by the rotation of the second driving sheave, and the vertical load acting on the second traction machine from the suspension body is supported by the first traction machine at the rotating body, and the second traction machine also has a frame, and the second traction machine body is installed on the frame, and the frame is in contact with the bottom, thereby preventing the second traction machine body from rotating relative to the first traction machine around the rotating body.

[0013] Effects of the Invention

[0014] According to the elevator apparatus of the present disclosure, the second hoisting machine can be easily installed by utilizing the first hoisting machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a perspective view showing the elevator apparatus according to Embodiment 1.

[0016] Figure 2 This is a front view showing the main parts of the elevator device before reconstruction.

[0017] Figure 3 It is shown Figure 1 A side view of the first and second hoisting machines.

[0018] Figure 4 Yes Figure 3 A side view showing the second hoisting machine separated from the first hoisting machine.

[0019] Figure 5 It is shown Figure 1 Front view of the first and second traction machines.

[0020] Figure 6 Yes Figure 3 A front view showing the second hoisting machine separated from the first hoisting machine.

[0021] Figure 7 It is a side view showing a first hoisting machine and a second hoisting machine of the elevator apparatus according to the second embodiment.

[0022] Figure 8 This is a front view showing a first hoisting machine and a second hoisting machine of the elevator apparatus according to Embodiment 3.

[0023] Fig. 9 This is a front view showing a first hoisting machine and a second hoisting machine of the elevator apparatus according to the fourth embodiment.

[0024] Fig.10 Yes Fig. 9 FIG. 2 is a diagram showing a second hoisting machine separated from a first hoisting machine.

[0025] Fig.11 This is a front view showing a first hoisting machine and a second hoisting machine of the elevator apparatus according to Embodiment 5.

[0026] Fig.12 It is a perspective view showing a first hoisting machine and a second hoisting machine of the elevator apparatus according to the sixth embodiment.

[0027] Fig.13 It is a side view showing a first hoisting machine and a second hoisting machine of the elevator apparatus according to the seventh embodiment.

[0028] Fig.14 This is a front view showing a first hoisting machine and a second hoisting machine of the elevator apparatus according to the eighth embodiment. DETAILED DESCRIPTION

[0029] Hereinafter, embodiments will be described with reference to the drawings.

[0030] Implementation method 1.

[0031] Figure 1 1 is a perspective view showing an elevator device according to Embodiment 1, showing a modified elevator device. In the figure, a first car guide rail 2, a second car guide rail 3, a first counterweight guide rail 4, and a second counterweight guide rail 5 are provided in a hoistway 1.

[0032] A first hoisting machine 6 is provided at the bottom 1a of the hoistway 1. The first hoisting machine 6 is an existing hoisting machine used before the modification. The first hoisting machine 6 is fixed to the ground of the bottom 1a via a fixing member (not shown) by a plurality of anchor bolts (not shown).

[0033] The first hoisting machine 6 is a gearless hoisting machine using a permanent magnet motor. The first hoisting machine 6 is a long cylindrical hoisting machine. The long cylindrical hoisting machine is a hoisting machine whose axial dimension is larger than the dimension perpendicular to the axial direction.

[0034] The second hoisting machine 7 is mounted on the first hoisting machine 6. The second hoisting machine 7 is a newly installed hoisting machine used after modification. In addition, the second hoisting machine 7 is a gearless hoisting machine using a permanent magnet motor. In addition, the second hoisting machine 7 is a thin hoisting machine. A thin hoisting machine is a hoisting machine whose axial dimension is smaller than the dimension in the direction perpendicular to the axial direction.

[0035] The second hoisting machine 7 includes a second hoisting machine body 71 and a second drive sheave 72. The second drive sheave 72 is rotatable relative to the second hoisting machine body 71.

[0036] The suspension body 10 is hung around the second driving sheave 72. As the suspension body 10, a plurality of ropes or a plurality of belts are used.

[0037] The car 11 and the counterweight 12 are suspended by the suspension body 10. The car 11 and the counterweight 12 are moved up and down in the hoistway 1 by the rotation of the second drive sheave 72.

[0038] A first car hanging pulley 13 and a second car hanging pulley 14 are provided at the lower portion of the car 11. A counterweight hanging pulley 15 is provided at the upper portion of the counterweight 12.

[0039] A support frame 16 is provided at the top of the hoistway 1. The support frame 16 supports a first return pulley 17, a second return pulley 18, and a third return pulley 19.

[0040] The suspension body 10 has a first end portion 10a and a second end portion 10b. The first end portion 10a and the second end portion 10b are connected to the support frame 16, respectively.

[0041] The suspension body 10 is hung around the first car hanging pulley 13, the second car hanging pulley 14, the first return pulley 17, the second return pulley 18, the second drive pulley 72, the third return pulley 19 and the counterweight hanging pulley 15 in sequence from the first end 10a side.

[0042] The elevator apparatus of the first embodiment is a 2:1 roping type machine room-less elevator. Due to the dead weight of the car 11 and the dead weight of the counterweight 12, a vertically upward load acts on the second hoisting machine 7 from the suspension body 10.

[0043] Figure 2 This is a front view showing the main parts of the elevator device before reconstruction. Figure 3 It is shown Figure 1 FIG. 1 is a side view of the first hoisting machine 6 and the second hoisting machine 7. Figure 4 Yes Figure 3 A side view showing the second hoisting machine 7 separated from the first hoisting machine 6. Figure 5 It is shown Figure 1 A front view of the first hoisting machine 6 and the second hoisting machine 7. Figure 4 Yes Figure 3A front view showing the second hoisting machine 7 separated from the first hoisting machine 6.

[0044] The first hoisting machine 6 before the transformation has a first hoisting machine body 61, a sheave shaft 62, and a first drive sheave 63. The first hoisting machine body 61 has a first hoisting machine motor not shown. In the first hoisting machine 6 before the transformation, the first drive sheave 63 is fixed to the sheave shaft 62. In addition, the sheave shaft 62 and the first drive sheave 63 are rotated by means of the first hoisting machine motor. When the elevator device is transformed, the first drive sheave 63 is removed from the sheave shaft 62.

[0045] The second hoisting machine body 71 is provided with a fitting hole 71a. The sheave shaft 62 is inserted into the fitting hole 71a. The second hoisting machine body 71 is fixed to the sheave shaft 62 by the same fixing method as the first drive sheave 63 is fixed to the sheave shaft 62.

[0046] Thus, the second drive sheave 72 is arranged directly above the sheave shaft 62. In addition, the second drive sheave 72 is arranged directly above the position of the first drive sheave 63 before being removed. In addition, the vertically upward load acting on the second hoisting machine 7 from the suspension body 10 is supported by the first hoisting machine 6 at the sheave shaft 62.

[0047] Although in Figure 1 Although omitted in the figure, the second hoisting machine 7 further includes a vibration stopper 73. The vibration stopper 73 includes a pair of protrusions 74. The pair of protrusions 74 protrude from the second hoisting machine body 71 toward the first hoisting machine body 61. In addition, each protrusion 74 is screwed into a threaded hole provided in the second hoisting machine body 71.

[0048] In addition, the pair of protrusions 74 contact with the first hoisting machine body 61 and sandwich the first hoisting machine body 61. Thus, the pair of protrusions 74 prevent the second hoisting machine body 71 from rotating relative to the first hoisting machine 6 about the sheave shaft 62. Each protrusion 74 contacts the outer surface of the leg of the first hoisting machine body 61. The outer surface of the leg is a vertical plane.

[0049] When the newly installed second hoisting machine 7 is installed on the existing first hoisting machine 6, the existing suspension body 10 is removed while the car 11 and the counterweight 12 are supported in the hoistway 1. Then, the first drive sheave 63 is removed from the sheave shaft 62.

[0050] Then, the sheave shaft 62 is inserted into the fitting hole 71a, and the second hoisting machine 7 is mounted on the sheave shaft 62. Then, the newly-installed suspension body 10 is hung around the first car hanging pulley 13, the second car hanging pulley 14, the first return pulley 17, the second return pulley 18, the second drive sheave 72, the third return pulley 19, and the counterweight hanging pulley 15.

[0051] In such an elevator device, the vertical load acting on the second hoisting machine 7 from the suspension body 10 is supported by the first hoisting machine 6 at the sheave shaft 62. In addition, the vibration stopper 73 contacts the first hoisting machine body 61, preventing the second hoisting machine body 71 from rotating relative to the first hoisting machine 6 about the sheave shaft 62.

[0052] Therefore, the second hoisting machine 7 can be easily installed using the first hoisting machine 6, compared with the case where the second hoisting machine 7 is connected to the first counterweight guide rail 4 which is away from the second hoisting machine 7. That is, the second hoisting machine 7 can be easily installed as a newly installed hoisting machine. As a result, the period of the renovation work can be shortened and the number of parts can be reduced.

[0053] Furthermore, even when a horizontal load acts on the second hoisting machine 7 during an earthquake, for example, the vibration stoppers 73 can suppress the rotation of the second hoisting machine main body 71 .

[0054] Furthermore, the labor of removing the first hoisting machine 6 which is the existing hoisting machine can be omitted.

[0055] Furthermore, the second hoisting machine 7 can be easily fixed to the hoistway 1 by utilizing the fixing structure of the first hoisting machine 6 with respect to the hoistway 1 .

[0056] Furthermore, the vibration stopper 73 has a pair of protrusions 74. Therefore, the rotation of the second hoisting machine 7 relative to the first hoisting machine 6 can be prevented with a simple structure.

[0057] Implementation method 2.

[0058] Next, Figure 7 1 is a side view showing the first hoisting machine 6 and the second hoisting machine 7 of the elevator device according to Embodiment 2. In Embodiment 2, the first hoisting machine 6 and the second hoisting machine 7 are connected to a connecting member 8. The connecting member 8 prevents the second hoisting machine 7 from moving relative to the first hoisting machine 6 in the axial direction of the first hoisting machine 6. The axial direction of the first hoisting machine 6 is the direction along the axis of the sheave shaft 62. Figure 7 left and right direction.

[0059] The other structures of the second embodiment are the same as those of the first embodiment.

[0060] In such an elevator device, the second hoisting machine 7 is connected to the first hoisting machine 6 by the connecting member 8. Therefore, even if a horizontal load in the axial direction of the first hoisting machine 6 acts on the second hoisting machine 7, for example, during an earthquake, the movement of the second hoisting machine 7 relative to the first hoisting machine 6 can be more reliably prevented.

[0061] Implementation method 3.

[0062] Next, Figure 81 is a front view showing a first hoisting machine 6 and a second hoisting machine 7 of an elevator apparatus according to Embodiment 3. In Embodiment 3, the first hoisting machine 6 and the second hoisting machine 7 are arranged at the top of the hoistway 1.

[0063] A machine stand 21 is provided at the top of the hoistway 1. The first hoisting machine 6 is provided on the machine stand 21. The second hoisting machine 7 is mounted on the first hoisting machine 6 upside down from Embodiment 1. Due to the dead weight of the car 11 and the dead weight of the counterweight 12, a vertical downward load acts on the second hoisting machine 7 from the suspension body 10.

[0064] The second drive sheave 72 is arranged directly below the sheave shaft 62. In addition, the second drive sheave 72 is arranged directly below the position of the first drive sheave 63 before being removed. In addition, the vertical downward load acting on the second hoisting machine 7 from the suspension body 10 is supported by the first hoisting machine 6 at the sheave shaft 62.

[0065] The other structures of the third embodiment are the same as those of the second embodiment.

[0066] With such a structure, the same effects as those of the first embodiment can be obtained.

[0067] Implementation method 4.

[0068] Next, Fig. 9 This is a front view showing a first hoisting machine 6 and a second hoisting machine 7 of the elevator apparatus according to the fourth embodiment. Fig.10 Yes Fig. 9 FIG. 2 is a diagram showing a second hoisting machine 7 separated from a first hoisting machine 6.

[0069] Although omitted in the first embodiment, the first hoisting machine 6 further includes a first hoisting machine brake 64. The first hoisting machine brake 64 is provided on the first hoisting machine body 61. In the first hoisting machine 6 before modification, the first hoisting machine brake 64 keeps the sheave shaft 62 and the first driving sheave 63 stationary. In the first hoisting machine 6 after modification, the rotation of the sheave shaft 62 is prevented by the first hoisting machine brake 64.

[0070] The first traction machine brake 64 has a brake rotating member, a brake pad and a brake spring. The brake rotating member is fixed to the sheave shaft 62. As the brake rotating member, for example, a brake drum or a brake disc is used. The brake spring prevents the rotation of the brake rotating member by pressing the brake pad against the brake rotating member.

[0071] In order to more reliably stop the rotation of the sheave shaft 62, the spring force of the brake spring may be increased, or the brake pad may be fixed to the brake rotating member. As a method for fixing the brake pad to the brake rotating member, for example, welding or bonding may be enumerated.

[0072] The sheave shaft 62 is provided with a first key groove 62a. The second hoisting machine body 71 is provided with a second key groove 71b. The second key groove 71b opens in the fitting hole 71a. The key 9 is inserted into the first key groove 62a and the second key groove 71b.

[0073] Thus, the second hoisting machine body 71 is prevented from rotating relative to the sheave shaft 62. That is, the second hoisting machine body 71 is prevented from rotating relative to the sheave shaft 62 by the key structure. The key structure is a structure in which the key 9 is inserted into the first key groove 62a and the second key groove 71b.

[0074] The vibration stopper 73 of the first embodiment is not used in the fourth embodiment. The other structures of the fourth embodiment are the same as those of the first embodiment.

[0075] When the newly installed second hoisting machine 7 is installed on the existing first hoisting machine 6, the existing suspension body 10 is removed while the car 11 and the counterweight 12 are supported in the hoistway 1. Then, the first drive sheave 63 is removed from the sheave shaft 62.

[0076] Then, the sheave shaft 62 is inserted into the fitting hole 71a, and the second hoisting machine 7 is mounted on the first hoisting machine 6. Then, the key 9 is inserted into the first key groove 62a and the second key groove 71b. In addition, the rotation of the sheave shaft 62 is prevented by the first hoisting machine brake 64.

[0077] Then, the newly installed suspension body 10 is hung around the first car hanging pulley 13, the second car hanging pulley 14, the first return pulley 17, the second return pulley 18, the second drive pulley 72, the third return pulley 19 and the counterweight hanging pulley 15.

[0078] In such an elevator device, the vertical load acting on the second hoisting machine 7 from the suspension body 10 is supported by the first hoisting machine 6 at the sheave shaft 62. In addition, the second hoisting machine body 71 is fixed to the sheave shaft 62, and the rotation of the sheave shaft 62 is prevented by the first hoisting machine brake 64.

[0079] Therefore, the second hoisting machine 7 can be easily installed using the first hoisting machine 6, compared with the case where the second hoisting machine 7 is connected to the first counterweight guide rail 4 which is away from the second hoisting machine 7. That is, the second hoisting machine 7 can be easily installed as a newly installed hoisting machine. As a result, the period of the renovation work can be shortened and the number of parts can be reduced.

[0080] Furthermore, even when a horizontal load acts on the second hoisting machine 7 during an earthquake, for example, the first hoisting machine brake 64 can suppress the rotation of the second hoisting machine main body 71 .

[0081] Furthermore, the labor of removing the first hoisting machine 6 which is the existing hoisting machine can be omitted.

[0082] Furthermore, the second hoisting machine 7 can be easily fixed to the hoistway 1 by utilizing the fixing structure of the first hoisting machine 6 with respect to the hoistway 1 .

[0083] Furthermore, the key structure prevents the second hoisting machine body 71 from rotating relative to the sheave shaft 62. Therefore, the second hoisting machine body 71 can be prevented from rotating relative to the sheave shaft 62 with a simple structure.

[0084] Furthermore, by fixing the brake pad to the brake rotating member, the rotation of the second hoisting machine body 71 relative to the sheave shaft 62 can be more reliably prevented.

[0085] In addition, the structure for preventing the second hoisting machine body 71 from rotating relative to the sheave shaft 62 is not limited to the key structure.

[0086] Implementation method 5.

[0087] Next, Fig.11 This is a front view showing the first hoisting machine 6 and the second hoisting machine 7 of the elevator apparatus according to Embodiment 5. In Embodiment 5, the first hoisting machine 6 and the second hoisting machine 7 are arranged at the top of the hoistway 1.

[0088] A machine stand 21 is provided at the top of the hoistway 1. The first hoisting machine 6 is provided on the machine stand 21. The second hoisting machine 7 is mounted on the first hoisting machine 6 upside down as in Embodiment 4. Due to the dead weight of the car 11 and the dead weight of the counterweight 12, a vertical downward load acts on the second hoisting machine 7 from the suspension body 10.

[0089] The second drive sheave 72 is arranged directly below the sheave shaft 62. In addition, the second drive sheave 72 is arranged directly below the position of the first drive sheave 63 before being removed. In addition, the vertical downward load acting on the second hoisting machine 7 from the suspension body 10 is supported by the first hoisting machine 6 at the sheave shaft 62.

[0090] The other structures of the fifth embodiment are the same as those of the fourth embodiment.

[0091] With such a structure, the same effect as that of the fourth embodiment can be obtained.

[0092] In addition, the first hoisting machine 6 and the second hoisting machine 7 of the third to fifth embodiments may be connected to the connection member 8 shown in the second embodiment.

[0093] Implementation method 6.

[0094] Next, Fig.12 It is a perspective view showing a first hoisting machine 6 and a second hoisting machine 7 of the elevator apparatus according to the sixth embodiment.

[0095] The second hoisting machine 7 of the sixth embodiment includes a second hoisting machine body 71 , a second driving sheave 72 , and a frame 75 . The second hoisting machine body 71 is attached to the frame 75 .

[0096] The frame 75 has a pair of vertical columns 76, a pair of fixing members 77, and a contact plate 78. The pair of vertical columns 76 are arranged at a distance from each other. The second hoisting machine body 71 is fixed to the middle portion of the pair of vertical columns 76 in the up-down direction.

[0097] Each fixing member 77 is fixed between the pair of vertical columns 76 at a position above the second hoisting machine body 71. The contact plate 78 is fixed between the pair of vertical columns 76 at a position below the second hoisting machine body 71.

[0098] A circular arc-shaped receiving groove 78a is provided on the upper surface of the contact plate 78. A portion of the sheave shaft 62 is inserted into the receiving groove 78a. The vertically upward load acting from the suspension body 10 on the second hoisting machine 7 is supported by the first hoisting machine 6 at the sheave shaft 62. The rotating body of the sixth embodiment is the sheave shaft 62.

[0099] The lower end of each vertical column 76 is in contact with the floor surface of the bottom portion 1a. The frame 75 is in contact with the floor surface of the bottom portion 1a, thereby preventing the second hoisting machine body 71 from rotating relative to the first hoisting machine 6 about the sheave shaft 62.

[0100] The vibration stopper 73 of the first embodiment is not used in the sixth embodiment. The other structures of the sixth embodiment are the same as those of the first embodiment.

[0101] When the newly installed second hoisting machine 7 is installed on the existing first hoisting machine 6, the existing suspension body 10 is removed while the car 11 and the counterweight 12 are supported in the hoistway 1. Then, the first drive sheave 63 is removed from the sheave shaft 62.

[0102] Then, the second hoisting machine 7 is placed on the floor of the bottom portion 1a, and a portion of the sheave shaft 62 is inserted into the receiving groove 78a.

[0103] Then, the newly installed suspension body 10 is hung around the first car hanging pulley 13, the second car hanging pulley 14, the first return pulley 17, the second return pulley 18, the second drive pulley 72, the third return pulley 19 and the counterweight hanging pulley 15.

[0104] In such an elevator device, the vertical load acting on the second hoisting machine 7 from the suspension body 10 is supported by the first hoisting machine 6 at the sheave shaft 62. In addition, the frame 75 contacts the bottom 1a, thereby preventing the second hoisting machine body 71 from rotating relative to the first hoisting machine 6 about the sheave shaft 62.

[0105] Therefore, the second hoisting machine 7 can be easily installed using the first hoisting machine 6, compared with the case where the second hoisting machine 7 is connected to the first counterweight guide rail 4 which is away from the second hoisting machine 7. That is, the second hoisting machine 7 can be easily installed as a newly installed hoisting machine. As a result, the period of the renovation work can be shortened and the number of parts can be reduced.

[0106] Furthermore, even when a horizontal load acts on the second hoisting machine 7 during an earthquake, for example, the frame 75 can suppress the rotation of the second hoisting machine main body 71 .

[0107] Furthermore, the labor of removing the first hoisting machine 6 which is the existing hoisting machine can be omitted.

[0108] Furthermore, the second hoisting machine 7 can be easily installed in the hoistway 1 by utilizing the fixing structure of the first hoisting machine 6 with respect to the hoistway 1 .

[0109] Implementation method 7.

[0110] Next, Fig.13 1 is a side view showing the first hoisting machine 6 and the second hoisting machine 7 of the elevator device according to Embodiment 7. In Embodiment 7, the first hoisting machine 6 and the second hoisting machine 7 are connected to a connecting member 8. The connecting member 8 is connected to the first hoisting machine body 61 and the longitudinal column 76. The connecting member 8 prevents the second hoisting machine 7 from moving relative to the first hoisting machine 6 in the axial direction of the first hoisting machine 6.

[0111] The other structures of the seventh embodiment are the same as those of the sixth embodiment.

[0112] In such an elevator device, the second hoisting machine 7 is connected to the first hoisting machine 6 by the connecting member 8. Therefore, even if a horizontal load in the axial direction of the first hoisting machine 6 acts on the second hoisting machine 7, for example, during an earthquake, the movement of the second hoisting machine 7 relative to the first hoisting machine 6 can be more reliably prevented.

[0113] Implementation method 8.

[0114] Next, Fig.14 1 is a front view showing the first hoisting machine 6 and the second hoisting machine 7 of the elevator device according to Embodiment 8. In Embodiment 8, the size of the receiving groove 78a is larger than that of Embodiment 6. In addition, the first drive sheave 63 is still fixed to the sheave shaft 62 after the modification. And, a part of the first drive sheave 63 is inserted into the receiving groove 78a.

[0115] The vertically upward load acting on the second hoisting machine 7 from the suspension body 10 is supported by the first hoisting machine 6 at the first drive sheave 63. The rotating body of the eighth embodiment is the first drive sheave 63.

[0116] The other structures of the eighth embodiment are the same as those of the sixth or seventh embodiment.

[0117] This structure can also achieve the same effects as those of Embodiment 6. Furthermore, since the first drive sheave 63 is not removed from the sheave shaft 62, the labor of the reconstruction work can be further reduced.

[0118] In Embodiments 6 to 8, the second hoisting machine body 71 provided with the fitting hole 71 a can be used similarly to the first embodiment.

[0119] Description of symbols

[0120] 1: hoistway; 1a: bottom; 6: first hoisting machine; 7: second hoisting machine; 8: connecting member; 9: key; 10: suspension body; 11: car; 61: first hoisting machine body; 62: sheave shaft (rotating body); 62a: first keyway; 63: first drive sheave (rotating body); 64: first hoisting machine brake; 71: second hoisting machine body; 71b: second keyway; 72: second drive sheave; 73: vibration stopper; 74: protrusion; 75: frame.

Claims

1. An elevator device, wherein: The elevator device comprises: a first traction machine disposed in the hoistway and having a sheave shaft; a second hoisting machine having a second hoisting machine body and a second drive sheave, wherein the second drive sheave is rotatable relative to the second hoisting machine body; A suspension body, which is hung around the second driving sheave; as well as a car suspended by the suspension body and raised and lowered in the hoistway by the rotation of the second driving sheave, A vertical load acting from the suspension body on the second hoisting machine is supported by the first hoisting machine at the sheave shaft. The second traction machine further comprises a vibration stopper. The vibration stopper is in contact with the first hoisting machine, and prevents the second hoisting machine body from rotating about the sheave shaft relative to the first hoisting machine.

2. The elevator device according to claim 1, wherein: The vibration stopper has a pair of protrusions that protrude from the second hoisting machine body and sandwich the first hoisting machine.

3. An elevator device, wherein: The elevator device comprises: a first hoisting machine having a first hoisting machine body provided in a hoistway, a sheave shaft provided in the first hoisting machine body, and a first hoisting machine brake provided in the first hoisting machine body; a second hoisting machine having a second hoisting machine body fixed to the sheave shaft, and a second driving sheave rotatable relative to the second hoisting machine body; A suspension body, which is hung around the second driving sheave; as well as a car suspended by the suspension body and raised and lowered in the hoistway by the rotation of the second driving sheave, A vertical load acting from the suspension body on the second hoisting machine is supported by the first hoisting machine at the sheave shaft. The rotation of the sheave shaft is prevented by the first hoisting machine brake.

4. The elevator device according to claim 3, wherein: The rotation of the second hoisting machine body relative to the sheave shaft is prevented by a key structure in which a key is inserted into the key groove.

5. The elevator device according to claim 3 or 4, wherein: The first traction machine brake comprises a brake rotating member and a brake pad. The brake pad is fixed to the brake rotating member.

6. The elevator device according to any one of claims 1 to 5, wherein: The first hoisting machine and the second hoisting machine are arranged at a bottom or a top in the hoistway.

7. An elevator device, wherein: The elevator device comprises: a first traction machine disposed at the bottom of the hoistway and having a rotating body; a second hoisting machine having a second hoisting machine body and a second drive sheave, wherein the second drive sheave is rotatable relative to the second hoisting machine body; A suspension body, which is hung around the second driving sheave; as well as a car suspended by the suspension body and raised and lowered in the hoistway by the rotation of the second driving sheave, A vertical load acting on the second hoisting machine from the suspension body is supported by the first hoisting machine at the rotating body. The second hoisting machine further comprises a frame, and the second hoisting machine main body is mounted on the frame. The frame is in contact with the bottom, thereby preventing the second hoisting machine body from rotating relative to the first hoisting machine about the rotating body.

8. The elevator device according to claim 7, wherein: The rotating body is a first driving sheave.

9. The elevator device according to any one of claims 1 to 8, wherein: The elevator device further includes a connecting member connected to the first hoisting machine and the second hoisting machine to prevent the second hoisting machine from moving relative to the first hoisting machine in an axial direction of the first hoisting machine.

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