Elevator traction machine and elevator device

Abstract

The invention provides an elevator traction machine and an elevator device, which can restrain water immersion of a traction machine brake through a simple structure and restrain high temperature in a brake cover. The brake disc (36) has a fan structure. That is, the brake disc (36) generates an air flow from the outer circumferential surface to the outside by rotation. The brake cover (40) has a cover body (41) and a heat dissipation member (42). The heat dissipation member (42) is fixed to the cover main body (41) so as to close an opening provided in the cover main body (41). The heat dissipation member (42) is disposed at a position where the heat dissipation member (42) comes into contact with an air flow generated by rotation of the brake disc (36).

Description

Technical Field

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

[0002] In conventional elevators, vertical columns are installed in the pit of the hoistway. A traction machine is fixed to a base. A moving device is installed on the base. The base can be raised along the vertical columns by the moving device. The moving device raises the base when the pit is flooded (see, for example, Patent Document 1).

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Laid-Open No. 2000-247557 Summary of the Invention

[0006] Problems to be solved by the invention

[0007] In the conventional elevator as described above, in order to raise the traction machine as a heavy load, it is necessary to install vertical columns, a base, a moving device, etc. having sufficient strength in the pit, resulting in a large structure.

[0008] On the other hand, if the hoisting machine brake is covered with a cover in order to suppress water ingress to the hoisting machine brake, heat generated by energization of the hoisting machine brake is stored in the cover, and the hoisting machine brake may be exposed to high temperature.

[0009] The present disclosure has been made to solve the above-mentioned problems, and an object thereof is to provide an elevator hoisting machine and an elevator apparatus capable of suppressing water intrusion into a hoisting machine brake and suppressing high temperature inside a brake cover with a simple structure.

[0010] Means for solving problems

[0011] The elevator hoisting machine disclosed in the present invention comprises: a driving sheave; a hoisting machine motor that rotates the driving sheave; a hoisting machine brake that has a brake rotor and a brake body that applies braking force to the brake rotor, the hoisting machine brake maintains a stationary state of the driving sheave; and a brake cover that covers the hoisting machine brake, the brake rotor having a fan structure that generates an airflow from the outer peripheral surface toward the outside by rotation.

[0012] Effects of the Invention

[0013] According to the present disclosure, it is possible to suppress water intrusion into the hoisting machine brake and to suppress the temperature inside the brake cover from becoming high with a simple structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a perspective view showing the elevator apparatus according to the first embodiment.

[0015] Figure 2 Yes Figure 1 Side view of an elevator traction machine.

[0016] Figure 3 It is an enlarged representation Figure 2 Side view of the main parts.

[0017] Figure 4 Yes Figure 3 The main view of the traction machine body.

[0018] Figure 5 It is a side view showing the main part of the elevator hoisting machine according to the second embodiment.

[0019] Figure 6 Yes Figure 5 The main view of the traction machine body.

[0020] Description of labels

[0021] 11: Hoistway, 11a: Pit, 30: Elevator hoist, 32: Drive sheave, 33: Hoist motor, 35: Hoist brake, 36: Brake disc (rotating body), 37: Clamp (brake body), 40: Brake cover, 41: Cover body, 41a: Air intake port (vent), 41b: Exhaust port (vent), 42: Heat dissipation component, 43: Cover component, 44: Exhaust duct, 45: Water-proof component. DETAILED DESCRIPTION

[0022] Hereinafter, embodiments will be described with reference to the drawings.

[0023] Implementation method 1.

[0024] Figure 1 This is a perspective view showing an elevator apparatus according to Embodiment 1. In the figure, a first car guide rail 12 , a second car guide rail 13 , a first counterweight guide rail 14 , and a second counterweight guide rail 15 are provided in a hoistway 11 .

[0025] The car 16 is provided between the first car guide rail 12 and the second car guide rail 13. The car 16 is guided by the first car guide rail 12 and the second car guide rail 13 and moves upward and downward in the hoistway 11.

[0026] The counterweight 17 is provided between the first counterweight guide rail 14 and the second counterweight guide rail 15. The counterweight 17 is guided by the first counterweight guide rail 14 and the second counterweight guide rail 15 and raised and lowered in the hoistway 11.

[0027] A machine base 18 is provided in the pit 11a of the hoistway 11. An elevator hoisting machine 30 is provided on the machine base 18. That is, the elevator hoisting machine 30 is provided in the pit 11a of the hoistway 11. The elevator hoisting machine 30 includes a hoisting machine body 31 and a drive sheave 32.

[0028] The suspension body 19 is wound around the driving sheave 32. As the suspension body 19, a plurality of ropes or a plurality of belts are used.

[0029] The car 16 and the counterweight 17 are suspended in the hoistway 11 by a suspension body 19. The car 16 and the counterweight 17 are moved up and down in the hoistway 11 by the rotation of the drive sheave 32.

[0030] A first car suspension pulley 21 and a second car suspension pulley 22 are provided at the lower portion of the car 16. A counterweight suspension pulley 23 is provided at the upper portion of the counterweight 17.

[0031] A first rope end fastener 24 is attached to the upper end of the first car guide rail 12. A first upper beam 25 and a second upper beam 26 are arranged at the top of the hoistway 11. The first upper beam 25 is fixed to the upper end of the first counterweight guide rail 14 and the upper end of the second counterweight guide rail 15. The second upper beam 26 is fixed to the upper end of the first upper beam 25 and the second car guide rail 13.

[0032] The second upper beam 26 supports a car return pulley 27. The first upper beam 25 supports a counterweight return pulley 28 and a second rope end fastener 29.

[0033] The suspension body 19 has a first end 19a and a second end 19b. The first end 19a is connected to the first rope end fastener 24 and the second end 19b is connected to the second rope end fastener 29.

[0034] The suspension body 19 is sequentially wound around the first car suspending sheave 21, the second car suspending sheave 22, the car return sheave 27, the drive sheave 32, the counterweight return sheave 28, and the counterweight suspending sheave 23 from the first end 19a side to reach the second end 19b.

[0035] As described above, the elevator apparatus according to the first embodiment is a machine-room-less elevator of the 2:1 roping system.

[0036] Figure 2 Yes Figure 1 30. The hoisting machine body 31 includes a hoisting machine motor 33, a shaft 34, a hoisting machine brake 35, and a brake cover 40.

[0037] The hoisting machine motor 33 rotates the shaft 34. The drive sheave 32 is fixed to the shaft 34. The drive sheave 32 rotates together with the shaft 34 about the shaft 34. That is, the hoisting machine motor 33 rotates the drive sheave 32 via the shaft 34.

[0038] The hoisting machine brake 35 keeps the drive sheave 32 and the shaft 34 stationary. In addition, the hoisting machine brake 35 brakes the rotation of the drive sheave 32 and the shaft 34.

[0039] The brake cover 40 is attached to the end of the hoisting machine motor 33 on the opposite side from the drive sheave 32. In addition, the brake cover 40 covers the hoisting machine brake 35 to prevent water from entering the hoisting machine brake 35. In other words, the brake cover 40 is a waterproof cover. Figure 2 In FIG. 1 , a portion of the brake cover 40 is cut away to show the structure inside the brake cover 40 .

[0040] The hoisting machine brake 35 includes a brake disc 36 as a brake rotor and a pair of clamps 37 as a brake body. That is, the hoisting machine brake 35 of the first embodiment is a disc brake. Figure 2 In the embodiment, one of the pair of clampers 37 is omitted.

[0041] The brake disc 36 is fixed to the end portion of the shaft 34 on the opposite side from the drive sheave 32. The brake disc 36 rotates together with the shaft 34 about the shaft 34. The pair of clampers 37 applies a braking force to the brake disc 36 by gripping the brake disc 36.

[0042] Figure 3 It is an enlarged representation Figure 2 Side view of the main parts. Figure 4 Yes Figure 3 The main view of the traction machine body 31 is along Figure 3 The arrow IV is observed in FIG.

[0043] Although Figure 2 The brake disc 36 is omitted in FIG. 3 , but has a fan structure. That is, the brake disc 36 rotates, as shown in FIG. Figure 3 As shown by the arrow, air flow is generated from the outer peripheral surface to the outside. As the fan structure, a centrifugal fan structure or a sirocco fan structure can be cited. For example, a plurality of blades 36a are radially provided on the brake disc 36.

[0044] The brake cover 40 has Figure 2 The cover body 41 and the heat dissipation component 42 are omitted.

[0045] The heat dissipating member 42 is fixed to the cover body 41 so as to close the opening provided in the cover body 41. The heat dissipating member 42 is arranged at a position in contact with the airflow generated by the rotation of the brake disc 36.

[0046] The heat dissipating member 42 is made of a material having a higher thermal conductivity than the material constituting the cover body 41. A plurality of heat dissipating fins 42a are provided on the heat dissipating member 42. Each heat dissipating fin 42a protrudes toward the outside of the brake cover 40.

[0047] In such an elevator hoisting machine 30, the hoisting machine brake 35 is covered by the brake cover 40. Therefore, even when water enters the pit 11a due to heavy rain, for example, the hoisting machine brake 35 can be prevented from being flooded with water by a simple structure.

[0048] Furthermore, the rotation of the brake disc 36 generates airflow outward from its outer peripheral surface. Therefore, even when heat is generated from the pair of clamps 37, the hoisting machine motor 33, and the like during operation of the elevator hoisting machine 30, the temperature inside the brake cover 40 can be suppressed compared to natural convection. Furthermore, since the brake disc 36 includes a fan structure, there is no need for a dedicated cooling fan.

[0049] Therefore, according to the elevator hoisting machine 30 of Embodiment 1, it is possible to suppress water infiltration of the hoisting machine brake 35 with a simple structure and to suppress the temperature inside the brake cover 40 from becoming high.

[0050] Furthermore, the heat dissipating member 42 is disposed at a position in contact with the airflow generated by the rotation of the brake disc 36. Therefore, the heat dissipation of the brake cover 40 can be improved, and the temperature inside the brake cover 40 can be more reliably suppressed from rising.

[0051] Furthermore, a plurality of heat dissipation fins 42a are provided on the heat dissipation member 42. Therefore, the surface area of the heat dissipation member 42 is increased, the heat dissipation of the brake cover 40 is further improved, and the temperature inside the brake cover 40 can be more reliably suppressed.

[0052] Furthermore, two or more heat dissipating members 42 may be fixed to the cover body 41 , and the number of heat dissipating members 42 is not particularly limited.

[0053] Alternatively, a plurality of blades for generating airflow may be provided on the outer periphery of the brake disc 36 .

[0054] In addition, the heat dissipating member 42 may be omitted, and for example, the entire cover body 41 may be made of a material having high thermal conductivity.

[0055] Implementation method 2.

[0056] then, Figure 5 It is a side view showing the main part of the elevator hoisting machine 30 according to the second embodiment. Figure 6 Yes Figure 5 The main view of the traction machine body 31 is along Figure 5 The arrow VI is observed in the figure. Figure 5 and Figure 6 In each of the figures, a part of the brake cover 40 is cut away to show the structure inside the brake cover 40 .

[0057] The brake cover 40 of the second embodiment includes a cover body 41 and a disc-shaped cover member 43. The cover body 41 is provided with an air intake port 41a as a vent and an air exhaust port 41b as a vent.

[0058] The air intake port 41a is provided at a position of the cover body 41 facing the end surface of the shaft 34. The air exhaust port 41b is provided in the cover body 41 just above the brake disc 36.

[0059] The cover member 43 is provided on the cover body 41 so as to cover the air inlet 41a. That is, the air inlet 41a is covered by the cover member 43. The cover member 43 is made of a porous material that allows air to pass through but blocks water from passing through.

[0060] The exhaust duct 44 passes through the exhaust port 41 b and guides the airflow generated by the rotation of the brake disc 36 from the inside of the brake cover 40 to the outside of the brake cover 40 .

[0061] The lower end of the exhaust duct 44 surrounds a portion of the brake disc 36 within the brake cover 40. The upper end of the exhaust duct 44 protrudes to the outside of the brake cover 40. Water is prevented from entering the brake cover 40 from between the inner peripheral surface of the exhaust port 41b and the outer peripheral surface of the exhaust duct 44.

[0062] A water-proof member 45 is provided at the upper end of the exhaust duct 44. The water-proof member 45 allows air to pass out of the exhaust duct 44 and prevents water from passing into the exhaust duct 44.

[0063] The water-insertion prevention member 45 is made of a porous material. Alternatively, the water-insertion prevention member 45 may be a check valve.

[0064] The other structures in the second embodiment are the same as those in the first embodiment.

[0065] In this elevator hoisting machine 30, an air intake port 41a is provided in the cover body 41. Furthermore, a cover member 43 is provided in the cover body 41 to block the air intake port 41a. This prevents water from entering the hoisting machine brake 35 and more reliably prevents the interior of the brake cover 40 from becoming hot.

[0066] Furthermore, an exhaust duct 44 is provided in the brake cover 40. Furthermore, a water-insulation prevention member 45 is provided in the exhaust duct 44. This prevents water from entering the hoisting machine brake 35, improves the heat dissipation of the brake cover 40, and more reliably prevents the interior of the brake cover 40 from becoming hot.

[0067] Furthermore, the water-insulation prevention member 45 is made of a porous material or a check valve, so that water infiltration of the hoisting machine brake 35 can be suppressed with a simple structure, and heat dissipation of the brake cover 40 can be improved.

[0068] Alternatively, the exhaust duct 44 may be omitted and the cover member 43 may be provided at the exhaust port 41 b.

[0069] In addition, the first embodiment and the second embodiment may be combined as appropriate. For example, the cover body 41 of the first embodiment may be provided with the air inlet 41a and the cover member 43.

[0070] Furthermore, in the first and second embodiments, the brake rotor may be a brake drum. In other words, the hoisting machine brake may be a drum brake.

[0071] Although preferred embodiments and the like have been described in detail above, the present invention is not limited to the above-described embodiments and the like, and various modifications and substitutions can be made to the above-described embodiments and the like without departing from the scope described in the claims.

[0072] Hereinafter, various aspects of the present disclosure are collectively described as supplementary notes.

[0073] (Note 1)

[0074] An elevator traction machine, comprising:

[0075] drive sheave;

[0076] a traction machine motor that rotates the drive sheave;

[0077] a hoisting machine brake having a brake rotor and a brake body for applying a braking force to the brake rotor, wherein the hoisting machine brake maintains the driving sheave in a stationary state; and

[0078] a brake cover, which covers the traction machine brake,

[0079] The brake rotor has a fan structure that generates airflow from an outer peripheral surface toward the outside by rotating.

[0080] (Note 2)

[0081] The elevator traction machine according to Supplementary Note 1, wherein:

[0082] The brake cover has:

[0083] a cover body; and

[0084] The heat dissipation member is disposed at a position in contact with an airflow generated by the rotation of the brake rotor and is formed of a material having a higher thermal conductivity than a material forming the cover body.

[0085] (Note 3)

[0086] The elevator traction machine according to Supplementary Note 2, wherein:

[0087] The heat dissipation component is provided with a plurality of heat dissipation fins.

[0088] (Note 4)

[0089] The elevator traction machine according to any one of Supplementary Notes 1 to 3, wherein:

[0090] The brake cover is provided with a vent.

[0091] The vent is covered by a cover member,

[0092] The cover member is made of a porous material that allows air to pass through but blocks water from passing through.

[0093] (Note 5)

[0094] The elevator traction machine according to any one of Supplementary Notes 1 to 4, wherein:

[0095] The elevator traction machine further comprises:

[0096] an exhaust duct that guides an air flow generated by the rotation of the brake rotor from inside the brake cover to outside the brake cover; and

[0097] The anti-water immersion component is provided in the exhaust duct, allowing air to pass out of the exhaust duct and preventing water from passing into the exhaust duct.

[0098] (Note 6)

[0099] The elevator traction machine according to Supplementary Note 5, wherein:

[0100] The water-proof component is made of a porous material.

[0101] (Note 7)

[0102] The elevator traction machine according to Supplementary Note 5, wherein:

[0103] The anti-water submersion component is a check valve.

[0104] (Note 8)

[0105] An elevator device, wherein the elevator traction machine according to any one of Supplementary Notes 1 to 7 is installed in a pit of a hoistway.

Claims

1. An elevator traction machine comprising: drive sheave; a traction machine motor that rotates the drive sheave; a hoisting machine brake having a brake rotor and a brake body for applying a braking force to the brake rotor, wherein the hoisting machine brake maintains the driving sheave in a stationary state; and a brake cover, which covers the traction machine brake, The brake rotor has a fan structure that generates airflow from an outer peripheral surface toward the outside by rotating.

2. The elevator traction machine according to claim 1, wherein: The brake cover has: a cover body; and The heat dissipation member is disposed at a position in contact with an airflow generated by the rotation of the brake rotor and is formed of a material having a higher thermal conductivity than a material forming the cover body.

3. The elevator traction machine according to claim 2, wherein: The heat dissipation component is provided with a plurality of heat dissipation fins.

4. The elevator traction machine according to any one of claims 1 to 3, wherein: The brake cover is provided with a vent. The vent is covered by a cover member, The cover member is made of a porous material that allows air to pass through but blocks water from passing through.

5. The elevator traction machine according to any one of claims 1 to 4, wherein: The elevator traction machine further comprises: an exhaust duct that guides an air flow generated by the rotation of the brake rotor from inside the brake cover to outside the brake cover; and The anti-water immersion component is provided in the exhaust duct, allowing air to pass out of the exhaust duct and preventing water from passing into the exhaust duct.

6. The elevator traction machine according to claim 5, wherein: The water-proof component is made of a porous material.

7. The elevator traction machine according to claim 5, wherein: The anti-water submersion component is a check valve.

8. An elevator device, wherein: The elevator hoisting machine according to any one of claims 1 to 7 is installed in a pit of a hoistway.

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