Elevator hoisting machine

Abstract

Provided is an elevator hoisting machine that can reduce the size of a machine room. The elevator hoisting machine includes a motor (10) having a rotating shaft (12), a housing (11) that houses the motor (10) and has an air intake port (13) formed on one side of the motor (10) in a direction along the rotating shaft (12), a filter support member (20) installed to the housing (11) in a manner to cover the air intake port (13) and having an opening portion (21), and an air intake filter (30) installed to an outer side surface (20b) of the filter support member (20) in a manner to cover the opening portion (21), the air intake filter (30) being detachable from the outside of the housing (11) in a radial direction of the housing (11) with the rotating shaft (12) as a center with respect to the filter support member (20).

Description

Technical Field

[0001] This invention relates to an elevator traction machine equipped with an air intake filter. Background Technology

[0002] Patent Document 1 describes an elevator traction machine. This elevator traction machine has a housing. The housing has a cylindrical portion and a wall portion located at the axial end of the cylindrical portion. Multiple vents are provided in the wall portion. A cooling fan and a filter are provided in each vent.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent No. 6038315 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] Typically, in elevator traction machines like those described above, the filter is installed on the front side of the elevator traction machine. A metal mesh for fixing the filter is installed on the front surface of the filter.

[0008] When replacing the filter, first set up a work platform on the front side of the elevator traction machine. Then, remove the metal mesh from the front side of the elevator traction machine, replace the filter from the front side of the elevator traction machine, and then reinstall the metal mesh from the front side of the elevator traction machine. After that, remove the work platform.

[0009] Therefore, sufficient working space is required on the front side of the elevator traction machine for filter replacement. Consequently, there is a problem of increasingly large machine rooms for elevator traction machines.

[0010] The present invention was made to solve the aforementioned problems, and its purpose is to provide an elevator traction machine that enables miniaturization of the machine room.

[0011] Methods for solving problems

[0012] The elevator traction machine of the present invention comprises: a motor having a rotating shaft; a housing housing the motor and having an air inlet formed on one side of the motor along the direction of the rotating shaft; a filter support member mounted on the housing to cover the air inlet and having an opening; and an air intake filter mounted on the outer surface of the filter support member to cover the opening, the air intake filter being detachable from the outside of the housing in the radial direction of the housing about the rotating shaft.

[0013] Invention Effects

[0014] According to the present invention, it is possible to miniaturize the computer room. Attached Figure Description

[0015] Figure 1 This is a schematic diagram showing a general cross-sectional structure of the elevator traction machine according to Embodiment 1.

[0016] Figure 2 This is a front view showing the structure of the filter support component and the air intake filter in the elevator traction machine of Embodiment 1.

[0017] Figure 3 This is a cross-sectional view showing the structure of the air intake filter for the elevator traction machine according to Embodiment 1.

[0018] Figure 4 This is a schematic diagram showing a general cross-sectional structure of the elevator traction machine according to Embodiment 2.

[0019] Figure 5 This is a front view showing the structure of the filter support component and the air intake filter in the elevator traction machine of Embodiment 2.

[0020] Label Explanation

[0021] 10: Motor; 11: Housing; 11a: Cylindrical part; 11b: Bottom; 12: Rotating shaft; 13: Air inlet; 14: Guide frame; 20: Filter support component; 20a: Inner surface; 20b: Outer surface; 21: Opening; 22: Handle; 23: Groove; 24: Guide bolt; 25: Fixing bolt; 30: Air intake filter; 31: Filter body; 32: Frame; 32a, 32b: Metal mesh. Detailed Implementation

[0022] Implementation Method 1

[0023] The elevator traction machine of Embodiment 1 will be described. The elevator traction machine of this embodiment is installed in the machine room. Figure 1 This is a schematic diagram showing a general cross-sectional structure of the elevator traction machine according to this embodiment. Figure 2 This is a front view showing the structure of the filter support component and the air intake filter in the elevator traction machine of this embodiment.

[0024] exist Figure 1 The image shows a horizontal cross-section of an elevator traction machine. Figure 1 The left and right directions indicate the direction along the rotation axis 12 of the motor 10. Figure 1 The right direction indicates the front direction of the elevator traction machine. Figure 1 The upward direction indicates the side direction of the elevator traction machine. Figure 1 The downward direction indicates the other side direction of the elevator traction machine. Figure 2 The diagram shows the structure of the filter support component 20 and the air intake filter 30 as viewed from the front side of the elevator traction machine along the rotation axis 12. Figure 2 The vertical direction indicates the vertical direction. Figure 2 The right direction indicates the side direction of the elevator traction machine. Figure 2 The left direction indicates the other side direction of the elevator traction machine.

[0025] like Figure 1 and Figure 2 As shown, the elevator traction machine has a motor 10, a housing 11, a filter support component 20, and an air intake filter 30. Figure 1 This is a schematic diagram, therefore Figure 1 The motor 10 and housing 11 are shown as a single unit. The motor 10 has a rotating shaft 12 and a stator and rotor (not shown). The rotating shaft 12 is the central axis of the motor 10. The rotating shaft 12 extends horizontally. The stator is fixed to the housing 11. The stator has, for example, a cylindrical shape centered on the rotating shaft 12. The rotor is configured to rotate relative to the stator about the rotating shaft 12. The rotor is, for example, positioned radially inside the motor 10 compared to the stator.

[0026] The rotor rotates integrally with a drive sheave (not shown). A suspension element is wound around the drive sheave. For example, multiple ropes or belts may be used as the suspension element.

[0027] The housing 11 houses the motor 10. The housing 11 has a cylindrical portion 11a and a bottom portion 11b. The cylindrical portion 11a is formed in a cylindrical shape centered on the rotation axis 12. The cylindrical portion 11a is positioned radially outward from the stator of the motor 10. The bottom portion 11b is formed at one end of the cylindrical portion 11a in the direction along the rotation axis 12. The bottom portion 11b is formed perpendicular to the rotation axis 12.

[0028] An air inlet 13 is formed at the center of the bottom 11b. The air inlet 13 is located on one side of the motor 10 along the direction of the rotation axis 12. A guide frame 14 is provided on the outer periphery of the bottom 11b.

[0029] The air inlet 13 is formed in a circular shape centered on the rotation axis 12. Cooling air for cooling the motor 10 flows through the air inlet 13. The cooling air flows into the housing 11 through the air inlet 13.

[0030] A filter support member 20 is installed at the air inlet 13. The filter support member 20 is installed on the bottom 11b of the housing 11, covering the air inlet 13. The filter support member 20 has a circular plate shape centered on the rotation axis 12. The outer peripheral end of the filter support member 20 is rotatably embedded in the guide frame 14. Thus, the filter support member 20 can rotate relative to the housing 11 in a plane perpendicular to the rotation axis 12. The center of rotation of the filter support member 20 can be aligned with or offset from the rotation axis 12.

[0031] The filter support member 20 has an inner surface 20a, an outer surface 20b, and a plurality of openings 21. Both the inner surface 20a and the outer surface 20b are planes perpendicular to the rotation axis 12. The inner surface 20a faces the motor 10. The outer surface 20b faces the front side of the elevator traction machine.

[0032] Each opening 21 extends between the inner surface 20a and the outer surface 20b. Cooling air for cooling the motor 10 flows through each opening 21. Each opening 21 is arranged radially outward of the filter support member 20 centered on the rotation shaft 12. Here, radially outward of the filter support member 20 means, for example, the area outward of a cylindrical surface having a radius equal to half the radius of the filter support member 20 centered on the rotation shaft 12. The multiple openings 21 are arranged spaced apart from each other along the circumference of the filter support member 20 centered on the rotation shaft 12.

[0033] A plurality of intake filters 30 are mounted on the outer surface 20b of the filter support member 20. Each intake filter 30 is mounted radially outward of the filter support member 20 such that it covers the opening 21. The plurality of intake filters 30 are arranged spaced apart from each other along the circumference of the filter support member 20. Each intake filter 30 is mounted to the filter support member 20 in a manner that allows it to be installed and removed radially from the outside of the housing 11 centered on the rotation axis 12.

[0034] A plurality of handles 22 are provided on the outer surface 20b of the filter support member 20. Each handle 22 is disposed radially outward of the filter support member 20. The plurality of handles 22 are arranged at intervals from each other along the circumference of the filter support member 20. Each handle 22 has a rod-shaped shape. Each handle 22 protrudes from the outer surface 20b toward the front side of the elevator traction machine. The height of each handle 22 in the direction along the rotation axis 12 is greater than the height of the guide frame 14 in the direction along the rotation axis 12. Each handle 22 is arranged circumferentially between two adjacent openings 21 of the filter support member 20.

[0035] The multiple handles 22 are configured such that when an operator is positioned to the side of the elevator traction machine, at least one handle 22 can be reached by the operator's hand, regardless of the rotation angle of the filter support member 20. In this embodiment, two handles 22 are provided, but three or more handles 22 may also be provided.

[0036] Figure 3 This is a cross-sectional view showing the structure of the air intake filter of the elevator traction machine according to this embodiment. Figure 3 The left and right directions indicate the thickness direction of the filter body 31, that is, the direction of the cooling air passage.

[0037] like Figure 3 As shown, the intake filter 30 has a filter body 31 and a frame 32. The intake filter 30 is unitized by the filter body 31 and the frame 32.

[0038] The frame 32 clamps the filter body 31 from both sides in the thickness direction. The frame 32 is formed of metal mesh or metal plate. The frame 32 is shaped to not obstruct the flow of cooling air through the filter body 31. Even if the filter body 31 is formed of a soft material, the shape of the intake filter 30 is maintained by the frame 32. Threaded holes are formed on the frame 32 as a mounting mechanism for detachably mounting the intake filter 30 to the filter support member 20. Thus, the intake filter 30 is detachably mounted to the filter support member 20 using screws.

[0039] The frame 32 in this embodiment is a metal plate frame with metal mesh, comprising a pair of metal meshes 32a and 32b and a metal plate component (not shown). The pair of metal meshes 32a and 32b are arranged on both sides of the filter body 31 in the thickness direction. Metal mesh 32a is positioned closer to the filter support member 20 than the filter body 31. Metal mesh 32b is positioned closer to the front side of the elevator traction machine than the filter body 31. The ends of metal meshes 32a and 32b are connected to each other via the metal plate component.

[0040] In the above-described structure, cooling air supplied from outside the elevator traction machine flows into the housing 11 through the air intake filter 30, the opening 21, and the air inlet 13, and is supplied to the motor 10. Thus, the motor 10 is cooled by the cooling air. The cooling air that has passed through the motor 10 is discharged to the outside of the elevator traction machine through the exhaust port (not shown). Dust particles suspended with the cooling air are removed by the filter body 31 of the air intake filter 30 before entering the housing 11.

[0041] If a large amount of dust adheres to the intake filter 30, the cooling airflow will decrease, reducing the cooling effect of the motor 10. Therefore, the intake filter 30 is replaced periodically.

[0042] The air intake filter 30 is mounted on the outer surface 20b of the filter support member 20. The air intake filter 30 protrudes to the outside of the elevator traction machine. Therefore, the air intake filter 30 can be removed and installed from the outside of the housing 11, on the side of the elevator traction machine, i.e., radially from the housing 11. Thus, operators can replace the air intake filter 30 from the side of the elevator traction machine.

[0043] In this embodiment, the air intake filter 30 is disposed radially outward of the filter support member 20. Therefore, when located on one side of the elevator traction machine, the air intake filter 30, positioned near the front when viewed from the operator's side, is easily accessible to the operator. On the other hand, in the case of large elevator traction machines, there may be situations where the operator cannot reach the air intake filter 30, which is positioned at a high height, or where it is positioned inward when viewed from the operator's side. In this case, the filter support member 20 can be rotated using the handle 22, thereby moving the position of the air intake filter 30. Thus, even without moving the operator, the position of the air intake filter 30 can be moved to a position accessible to the operator's hand. Therefore, regardless of the placement position of the air intake filter 30 in the filter support member 20, the operator can replace the air intake filter 30 from one side of the elevator traction machine.

[0044] As described above, the elevator traction machine of this embodiment includes a motor 10, a housing 11, a filter support member 20, and an air intake filter 30. The motor 10 has a rotating shaft 12. The housing 11 houses the motor 10. An air intake 13 is formed in the housing 11. The air intake 13 is located on one side of the motor 10 in the direction along the rotating shaft 12. The filter support member 20 is mounted to the housing 11 to cover the air intake 13. The filter support member 20 has an opening 21. The air intake filter 30 is mounted to the outer surface 20b of the filter support member 20 to cover the opening 21. The air intake filter 30 can be detached from the outside of the housing 11 in the radial direction of the housing 11 centered on the rotating shaft 12, relative to the filter support member 20.

[0045] According to this structure, since the air intake filter 30 can be removed and installed radially from the outside of the housing 11, operators can replace the air intake filter 30 from the side of the elevator traction machine. Therefore, the working space that should be ensured on the front side of the elevator traction machine can be reduced. Thus, according to the above structure, the machine room where the elevator traction machine is installed can be miniaturized. Furthermore, according to the above structure, the freedom of placement of the elevator traction machine within the machine room can be increased. This is particularly effective for large elevator traction machines with a large radial dimension of the housing 11.

[0046] In the elevator traction machine of this embodiment, the air intake filter 30 has a filter body 31 and a frame 32. The frame 32 clamps the filter body 31 from both sides in the thickness direction. With this structure, since the air intake filter 30 is unitized by the filter body 31 and the frame 32, the installation and removal of the air intake filter 30 becomes easy. Therefore, the workability of replacing the air intake filter 30 can be improved. Furthermore, since the installation and removal of the air intake filter 30 is easy, the air intake filter 30 can be easily replaced even from the side of the elevator traction machine.

[0047] In the elevator traction machine of this embodiment, the frame 32 is formed of a metal mesh or a metal plate. With this structure, the frame 32 can be formed in a manner that does not obstruct the flow of cooling air through the filter body 31. Therefore, it is possible to suppress the reduction in the cooling effect of the motor 10.

[0048] In the elevator traction machine of this embodiment, the filter support member 20 is rotatable relative to the housing 11 in a plane perpendicular to the rotation axis 12. According to this structure, by rotating the filter support member 20, the position of the air intake filter 30 can be moved. Therefore, regardless of the placement position of the air intake filter 30, the operator can replace the air intake filter 30 from one side of the elevator traction machine. Thus, the workability of replacing the air intake filter 30 can be improved.

[0049] In the elevator traction machine of this embodiment, a handle 22 is provided on the filter support member 20. With this structure, the operator can easily rotate the filter support member 20. Therefore, the workability of replacing the air intake filter 30 can be improved.

[0050] Implementation Method 2

[0051] The elevator traction machine of Embodiment 2 will be described. Figure 4 This is a schematic diagram showing a general cross-sectional structure of the elevator traction machine according to this embodiment. Figure 5 This is a front view showing the structure of the filter support component and the air intake filter in the elevator traction machine of this embodiment.

[0052] exist Figure 4 The image shows a horizontal cross-section of an elevator traction machine. Figure 4 The left and right directions indicate the direction along the rotation axis 12 of the motor 10. Figure 4 The right direction indicates the front direction of the elevator traction machine. Figure 4 The upward direction indicates the side direction of the elevator traction machine. Figure 4 The downward direction indicates the other side direction of the elevator traction machine. Figure 5The diagram shows the structure of the filter support component 20 and the air intake filter 30 as viewed from the front side of the elevator traction machine along the rotation axis 12. Figure 5 The vertical direction indicates the vertical direction. Figure 5 The right direction indicates the side direction of the elevator traction machine. Figure 5 The left direction indicates the other side direction of the elevator traction machine.

[0053] like Figure 4 and Figure 5 As shown, an arc-shaped groove 23 is formed in the filter support member 20. In this embodiment, two semi-circular grooves 23 are formed in the filter support member 20. The two grooves 23 extend along the same circle centered on the rotation axis 12. The two grooves 23 are located radially outward of each intake filter 30, i.e., outward of each opening 21, in relation to the rotation axis 12 of the filter support member 20. Figure 4 In the cross-section shown, the two grooves 23 respectively penetrate between the outer surface 20b and the inner surface 20a of the filter support member 20. That is, the two grooves 23 are respectively formed as slits.

[0054] A guide bolt 24 and multiple fixing bolts 25 are inserted into each of the two slots 23. The guide bolt 24 and fixing bolts 25 are inserted into the slots 23 from the outer surface 20b side. The filter support component 20 is fixed to the housing 11 by the fixing bolts 25. The guide bolt 24 is fixed relative to the housing 11 and is movable relative to the filter support component 20 along the slots 23.

[0055] The other structures are the same as in Implementation Method 1.

[0056] In this embodiment, if the fixing bolt 25 is removed, the filter support member 20 is supported on the housing 11 only by the guide bolt 24. In this state, the guide bolt 24 moves relative to the housing 11 along the groove 23, thereby causing the filter support member 20 to rotate relative to the housing 11. The center of rotation of the filter support member 20 may be aligned with or deviate from the rotation axis 12.

[0057] In this embodiment, the filter support member 20 is also rotatable relative to the housing 11 in a plane perpendicular to the rotation axis 12. Therefore, similar to Embodiment 1, in this embodiment, regardless of the placement of the air intake filter 30, the operator can replace the air intake filter 30 from one side of the elevator traction machine. This improves the workability of replacing the air intake filter 30.

Claims

1. A traction machine for elevators, comprising: A motor, which has a rotating shaft; The housing houses the motor and has an air inlet formed on one side of the motor along the direction of the rotation axis; A filter support member, which is mounted on the housing to cover the air inlet and has an opening; and An intake filter is mounted on the outer surface of the filter support member in a manner that covers the opening. The filter support component is rotatable relative to the housing in a plane perpendicular to the rotation axis. The opening is located radially outward of the filter support member about the axis of rotation. The intake filter is mounted radially to the outside of the filter support member, about the axis of rotation. The intake filter can be detached from the outside of the housing in the radial direction of the housing centered on the rotation axis, relative to the filter support component.

2. The elevator traction machine according to claim 1, wherein, The intake filter has: a filter body; and a frame that clamps the filter body from both sides in the thickness direction of the filter body.

3. The elevator traction machine according to claim 2, wherein, The frame is formed of metal mesh or metal plate.

4. The elevator traction machine according to any one of claims 1-3, wherein, A handle is provided on the filter support component.

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