Foreign matter removal device of elevator speed governor

Abstract

To provide a foreign matter removal device of an elevator speed governor that can suppress a foreign matter removed from a speed governor sheave from re-adhering to the speed governor sheave.SOLUTION: A foreign matter removal device 7 of an elevator speed governor is provided with: an outer peripheral surface scraper 701 that removes a foreign matter from an outer peripheral surface lower portion 302 that is a portion positioned lower than a speed governor shaft 2, on an outer peripheral surface of a speed governor sheave 3; an outer peripheral surface scraper heating device 702 that heats the outer peripheral surface scraper 701; a side surface scraper 704 that removes a foreign matter from a side-surface outer periphery-side lower portion 303 that is an outer periphery-side portion on a side surface of the speed governor sheave 3, which is positioned lower than the speed governor shaft 2; and a side-surface scraper heating device 705 that heats the side-surface scraper 704.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to a foreign object removal device for an elevator governor. [Background technology]

[0002] Conventionally, elevator governors equipped with foreign object removal devices that remove foreign objects from the outer circumferential portion of the side surface of the governor sheave are known. The foreign object removal device has a facing portion that faces the outer circumferential portion of the side surface of the governor sheave. Foreign objects that have adhered to the outer circumferential portion of the side surface of the governor sheave are removed from the governor sheave by the facing portion. (See, for example, Patent Document 1.) [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2021-160921 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the elevator governor foreign object removal device described in Patent Document 1, the portion where foreign objects are removed from the side surface of the governor sheave at the facing portion is a horizontal surface. As a result, the foreign objects removed from the side surface of the governor sheave accumulate on the horizontal surface of the facing portion. As the foreign objects accumulated on the horizontal surface of the facing portion grow larger, there is a problem in that the foreign objects accumulated on the horizontal surface of the facing portion re-adhere to the side surface of the governor sheave.

[0005] The present disclosure has been made to solve the problems described above, and has an object to provide a foreign object removal device for an elevator governor that can prevent foreign objects removed from the governor sheave from re-adhering to the governor sheave. [Means for solving the problem]

[0006] The elevator governor foreign object removal device according to the present disclosure includes an outer peripheral surface scraper that removes foreign objects from a lower portion of the outer peripheral surface of the governor sheave that is below the governor shaft, and an outer peripheral surface scraper heating device that heats the outer peripheral surface scraper. The elevator governor foreign object removal device according to the present disclosure includes a side scraper that removes foreign objects from a lower outer circumferential portion of the side surface of the governor sheave, which is a portion on the outer circumferential side that is below the governor shaft, and a side scraper heating device that heats the side scraper. Effect of the Invention

[0007] According to the elevator governor foreign object removal device according to the present disclosure, it is possible to prevent foreign objects removed from the governor sheave from re-adhering to the governor sheave. [Brief description of the drawings]

[0008] [Figure 1] 1 is a front view showing an elevator governor equipped with a foreign object removal device for an elevator governor according to a first embodiment. FIG. [Diagram 2] FIG. 2 is a left side view showing the elevator governor of FIG. 1. [Diagram 3] 3 is a cross-sectional view taken along line III-III in FIG. 1. [Figure 4] 2 is a block diagram showing the foreign matter removal device 7 of FIG. 1. [Diagram 5] 2 is a front view showing a state in which the governor weight of FIG. 1 is in contact with the overspeed detection switch. FIG. [Figure 6] FIG. 2 is a front view showing an elevator governor of a comparative example. [Figure 7] FIG. 7 is a left side view showing the elevator governor of FIG. 6. [Figure 8] FIG. 7 is a front view showing a state in which the governor weight of FIG. 6 is in contact with the overspeed detection switch. [Figure 9] FIG. 7 is a front view showing a state in which a foreign object is formed on the governor sheave of FIG. 6. [Figure 10] FIG. 10 is a left side view showing the elevator governor of FIG. 9. [Figure 11] 10 is a front view showing a state in which the foreign object in FIG. 9 comes into contact with the overspeed detection switch. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Embodiment 1 Fig. 1 is a front view showing an elevator governor equipped with a foreign object removal device for an elevator governor according to embodiment 1. Fig. 2 is a left side view showing the elevator governor of Fig. 1. Fig. 3 is a cross-sectional view taken along line III-III in Fig. 1. The elevator governor includes a frame 1, a governor shaft 2, a governor sheave 3, a governor rope 4, a pair of governor weights 5, an overspeed detection switch 6, and a foreign object removal device 7.

[0010] The frame 1 has a base 101 , a first side plate 102 , a second side plate 103 , and a plurality of fixing anchor bolts 104 .

[0011] The base 101 is formed in a flat plate shape. The base 101 is laid on the floor 8 of the machine room. The base 101 is fixed to the floor 8 of the machine room via a plurality of fixing anchor bolts 104.

[0012] Each of the first side plate 102 and the second side plate 103 is formed in a flat plate shape. The first side plate 102 and the second side plate 103 are arranged parallel to each other. Therefore, the first side plate 102 and the second side plate 103 are arranged to face each other in the plate thickness direction. Each of the first side plate 102 and the second side plate 103 is erected on the upper surface of the base 101. The base 101, the first side plate 102, and the second side plate 103 are formed integrally with each other. Therefore, each of the first side plate 102 and the second side plate 103 is fixed to the base 101.

[0013] The governor shaft 2 is rotatably supported by the frame 1. Specifically, the governor shaft 2 is provided across the first side plate 102 and the second side plate 103, and is rotatably supported by each of the first side plate 102 and the second side plate 103.

[0014] The governor sheave 3 is fixed to the governor shaft 2. The governor sheave 3 is disposed between a first side plate 102 and a second side plate 103. The governor sheave 3 is rotatable relative to the frame 1 around the governor shaft 2.

[0015] The governor sheave 3 is formed in a disk shape. A groove 301 extending in the circumferential direction of the governor sheave 3 is formed on the outer circumferential surface of the governor sheave 3.

[0016] The governor rope 4 is wound around the governor sheave 3. Specifically, the governor rope 4 is fitted into a groove 301 of the governor sheave 3. A cage (not shown) is connected to the governor rope 4 via a connecting member (not shown). Therefore, the governor rope 4 moves in conjunction with the movement of the cage.

[0017] A tension wheel (not shown) is suspended from the governor rope 4, and the suspended tension wheel applies tension to the governor rope 4. When tension is applied to the governor rope 4, a frictional force is generated between the governor rope 4 and the groove 301 of the governor sheave 3. The frictional force generated between the governor rope 4 and the groove 301 of the governor sheave 3 causes the governor sheave 3 to rotate in conjunction with the movement of the governor rope 4.

[0018] Each of the pair of governor weights 5 is provided on the governor sheave 3. Specifically, each of the pair of governor weights 5 is provided on one of a pair of side surfaces of the governor sheave 3 facing the axial direction of the governor sheave 3.

[0019] Each of the pair of governor weights 5 has a weight shaft 501 , a weight body 502 , and an operating piece 503 .

[0020] The weight shaft 501 is provided on a side surface of the governor sheave 3. When viewed along the governor shaft 2, the weight shaft 501 is disposed between the governor shaft 2 and the outer peripheral surface of the governor sheave 3. The weight shaft 501 is disposed so as to extend perpendicular to the side surface of the governor sheave 3. In other words, the weight shaft 501 is disposed parallel to the governor shaft 2.

[0021] The weight body 502 is formed in an elongated shape. The weight body 502 is arranged along the side surface of the governor sheave 3. One longitudinal end portion 504 of the weight body 502 is attached to the weight shaft 501. The weight body 502 is rotatable about the weight shaft 501.

[0022] A spring (not shown) is attached to the other longitudinal end 505 of the weight body 502. The spring is provided across the weight body 502 and the governor sheave 3. When the governor sheave 3 rotates, centrifugal force acts on the weight body 502. The centrifugal force acting on the weight body 502 causes the other longitudinal end 505 of the weight body 502 to move radially outward of the governor sheave 3 against the elastic force of the spring. Therefore, the governor weight 5 moves radially of the governor sheave 3 according to the rotation speed of the governor sheave 3.

[0023] The operating piece 503 is provided at the other longitudinal end 505 of the weight body 502. Therefore, the operating piece 503 moves in the radial direction of the governor sheave 3 according to the rotation speed of the governor sheave 3.

[0024] The excessive speed detection switch 6 is provided on the frame 1. Specifically, the excessive speed detection switch 6 is provided on the second side plate 103. The excessive speed detection switch 6 has a switch box 601 and an operating piece 602.

[0025] The switch box 601 is provided on the second side plate 103. The operating piece 602 is provided on the switch box 601.

[0026] The overspeed detection switch 6 is disposed at a preset position. The preset position at which the overspeed detection switch 6 is disposed is a position where the operating piece 503 comes into contact with the operating piece 602 when the rotation speed of the governor sheave 3 reaches the preset rotation speed. The preset rotation speed of the governor sheave 3 is the rotation speed of the governor sheave 3 when the speed of the car reaches the preset speed. Therefore, when the speed of the car reaches the preset speed, the operating piece 503 comes into contact with the operating piece 602.

[0027] The switch box 601 detects that the operating piece 503 has come into contact with the operating piece 602. When the switch box 601 detects that the operating piece 503 has come into contact with the operating piece 602, the overspeed detection switch 6 detects that the rotational speed of the governor sheave 3 has reached a preset rotational speed. In other words, when the switch box 601 detects that the operating piece 503 has come into contact with the operating piece 602, the overspeed detection switch 6 detects that the speed of the car has reached a preset speed.

[0028] The foreign matter removal device 7 includes a pair of outer circumferential surface scrapers 701, a pair of outer circumferential surface scraper heating devices 702, and a pair of outer circumferential surface scraper temperature sensors 703. The foreign matter removal device 7 also includes a pair of side scrapers 704, a pair of side surface scraper heating devices 705, and a pair of side surface scraper temperature sensors 706. The foreign matter removal device 7 also includes a pair of oil pans 707.

[0029] The direction along the radial direction of the governor sheave 3 and along the floor 8 of the machine room is defined as the width direction D of the foreign matter removal device 7. When viewed along the governor shaft 2, the pair of outer circumferential surface scrapers 701 are arranged spaced apart from each other in the width direction D, centered on a straight line passing through the center of the governor shaft 2 and extending in the height direction. The pair of outer circumferential surface scraper heating devices 702 are provided for each of the pair of outer circumferential surface scrapers 701. The pair of outer circumferential surface scraper temperature sensors 703 are provided for each of the pair of outer circumferential surface scrapers 701.

[0030] When viewed along the governor shaft 2, the pair of side scrapers 704 are arranged spaced apart from each other in the width direction D, centered on a straight line passing through the center of the governor shaft 2 and extending in the height direction. One pair of side scraper heating devices 705 is provided for each of the pair of side scrapers 704. One pair of side scraper temperature sensors 706 is provided for each of the pair of side scrapers 704.

[0031] One of the pair of oil receivers 707 is provided below one of the pair of outer circumferential surface scrapers 701 and below one of the pair of side surface scrapers 704. Liquefied foreign matter flowing down from one of the outer circumferential surface scrapers 701 and one of the side surface scrapers 704 is collected in one of the oil receivers 707.

[0032] The other oil receiver 707 of the pair of oil receivers 707 is provided below the other outer peripheral surface scraper 701 of the pair of outer peripheral surface scrapers 701 and below the other side surface scraper 704 of the pair of side surface scrapers 704. Liquefied foreign matter flowing down from the other outer peripheral surface scraper 701 and liquefied foreign matter flowing down from the other side surface scraper 704 are collected in the other oil receiver 707.

[0033] A portion of the outer circumferential surface of the governor sheave 3 that is below the governor shaft 2 is referred to as an outer circumferential surface lower portion 302. Each of the pair of outer circumferential surface scrapers 701 removes foreign matter from the outer circumferential surface lower portion 302.

[0034] An outer peripheral portion of the side surface of the governor sheave 3 that is below the governor shaft 2 is referred to as a side peripheral lower portion 303. Each of the pair of side surface scrapers 704 removes foreign matter from the side peripheral lower portion 303.

[0035] The pair of outer peripheral surface scrapers 701 have the same configuration. Therefore, the following describes the configuration of one of the pair of outer peripheral surface scrapers 701. The outer peripheral surface scraper 701 has an outer peripheral surface base portion 708 and an outer peripheral surface blade portion 709.

[0036] The outer peripheral surface base portion 708 is provided across the first side plate 102 and the second side plate 103. The outer peripheral surface base portion 708 is fixed to the first side plate 102 and the second side plate 103 via a plurality of screws 710.

[0037] The outer circumferential surface blade portion 709 is formed integrally with the outer circumferential surface base portion 708. The tip of the outer circumferential surface blade portion 709 is formed at an acute angle. The tip of the outer circumferential surface blade portion 709 faces the outer circumferential surface lower portion 302. The portion of the outer circumferential surface lower portion 302 that the tip of the outer circumferential surface blade portion 709 faces is the outer circumferential surface foreign matter removal target portion 304. Foreign matter adhering to the outer circumferential surface foreign matter removal target portion 304 is scraped off by the tip of the outer circumferential surface blade portion 709.

[0038] When viewed along the governor shaft 2, a half line that is a tangent line passing through the outer peripheral surface foreign object removal target portion 304 of the circle that constitutes the outer peripheral surface of the governor sheave 3 and that is above the outer peripheral surface foreign object removal target portion 304 is defined as a tangent half line L. In Fig. 1, the tangent half line L is indicated by a two-dot chain line.

[0039] The outer circumferential surface blade portion 709 is arranged so that the angle θ between the tangent half line L and the outer circumferential surface blade portion 709 is greater than 90 degrees when viewed along the governor shaft 2. In other words, the outer circumferential surface blade portion 709 is arranged so that the angle θ between the tangent half line L and the outer circumferential surface blade portion 709 is an obtuse angle when viewed along the governor shaft 2. In addition, the outer circumferential surface blade portion 709 is arranged so that it extends downward from the outer circumferential surface foreign matter removal target portion 304 when viewed along the governor shaft 2.

[0040] The outer circumferential surface scraper heating device 702 is provided on an outer circumferential surface base 708 of the outer circumferential surface scraper 701. The outer circumferential surface scraper heating device 702 heats the outer circumferential surface base 708, whereby the outer circumferential surface scraper 701 is heated.

[0041] The outer circumferential surface scraper temperature sensor 703 is provided on an outer circumferential surface base 708 of the outer circumferential surface scraper 701. The outer circumferential surface scraper temperature sensor 703 measures the temperature of the outer circumferential surface base 708, thereby measuring the temperature of the outer circumferential surface scraper 701.

[0042] The pair of side scrapers 704 have the same configuration. Therefore, hereinafter, one of the pair of side scrapers 704 will be described. The side scraper 704 has a pair of side base portions 711 and a pair of side blade portions 712.

[0043] One of the pair of side surface base portions 711 is provided on the first side plate 102. One of the pair of side surface base portions 711 is fixed to the first side plate 102 via a plurality of screws 713.

[0044] The other of the pair of side surface base portions 711 is provided on the second side plate 103. The other of the pair of side surface base portions 711 is fixed to the second side plate 103 via a plurality of screws 714.

[0045] The pair of side blade portions 712 are provided on each of the pair of side surface base portions 711. One of the pair of side surface blade portions 712 is provided facing one of a pair of side surfaces facing the axial direction of the governor sheave 3. The other of the pair of side surface blade portions 712 is provided facing the other of the pair of side surfaces facing the axial direction of the governor sheave 3.

[0046] The pair of side blades 712 are formed integrally with the corresponding side base portion 711. The tip of each of the pair of side blades 712 is formed at an acute angle. Each of the pair of side blades 712 is disposed along the outer peripheral lower portion 303 of the side surface.

[0047] The side scraper heating device 705 is provided on each side base 711 of the side scraper 704. The outer circumferential surface scraper heating device 702 heats each side base 711, thereby heating the side scraper 704.

[0048] The side scraper temperature sensor 706 is provided on each side base 711 of the side scraper 704. The side scraper temperature sensor 706 measures the temperature of each side base 711, thereby measuring the temperature of the side scraper 704.

[0049] FIG. 4 is a block diagram showing the foreign matter removal device 7 of FIG. 1. The foreign matter removal device 7 has a control device 715. In FIG. 4, one outer peripheral scraper heating device 702 and one outer peripheral scraper temperature sensor 703 are shown, but each of the pair of outer peripheral scraper heating devices 702 and each of the pair of outer peripheral scraper temperature sensors 703 are connected to the control device 715. In addition, in FIG. 4, one side scraper heating device 705 and one side scraper temperature sensor 706 are shown, but each of the pair of side scraper heating devices 705 and each of the pair of side scraper temperature sensors 706 are connected to the control device 715. The measurement results of the outer peripheral scraper temperature sensor 703 and the measurement results of the side scraper temperature sensor 706 are input to the control device 715.

[0050] The control device 715 controls the driving of the outer circumferential surface scraper heating device 702 based on the measurement result of the outer circumferential surface scraper temperature sensor 703. The control device 715 has a preset allowable temperature for the outer circumferential surface scraper 701. As the allowable temperature for the outer circumferential surface scraper 701, a temperature at which foreign matter removed from the governor sheave 3 and attached to the outer circumferential surface scraper 701 does not ignite is set.

[0051] When the temperature of the outer circumferential surface scraper 701 is equal to or lower than the allowable temperature, the control device 715 causes the outer circumferential surface scraper heating device 702 to heat the outer circumferential surface scraper 701. On the other hand, when the temperature of the outer circumferential surface scraper 701 exceeds the allowable temperature, the control device 715 causes the outer circumferential surface scraper heating device 702 to stop heating the outer circumferential surface scraper 701.

[0052] The control device 715 controls the operation of the side scraper heating device 705 based on the measurement result of the side scraper temperature sensor 706. The control device 715 has a preset allowable temperature for the side scraper 704. The allowable temperature for the side scraper 704 is set to a temperature at which foreign matter removed from the governor sheave 3 and attached to the side scraper 704 does not ignite.

[0053] When the temperature of the side scraper 704 is equal to or lower than the allowable temperature, the control device 715 causes the side scraper heating device 705 to heat the side scraper 704. On the other hand, when the temperature of the side scraper 704 exceeds the allowable temperature, the control device 715 causes the side scraper heating device 705 to stop heating the side scraper 704.

[0054] Fig. 5 is a front view showing a state in which the governor weight 5 of Fig. 1 is in contact with the overspeed detection switch 6. When the rotational speed of the governor sheave 3 reaches a preset rotational speed, the operating piece 503 of the governor weight 5 comes into contact with the operating piece 602 of the overspeed detection switch 6. As a result, the overspeed detection switch 6 detects that the speed of the car has reached the preset speed. When the overspeed detection switch 6 detects that the speed of the car has reached the preset speed, the supply of power to a hoisting machine (not shown) is stopped. This brings the car to an emergency stop.

[0055] Next, removal of foreign matter from the governor sheave 3 by the foreign matter removal device 7 will be described. In the elevator governor foreign matter removal device 7 according to embodiment 1, foreign matter adhering to the outer peripheral surface of the governor sheave 3 is removed from the governor sheave 3 by the outer peripheral surface scraper 701. This prevents foreign matter adhering to the outer peripheral surface of the governor sheave 3 from coming into contact with the operating piece 602 of the overspeed detection switch 6. This prevents the overspeed detection switch 6 from making an erroneous detection.

[0056] The outer peripheral surface blade portion 709 of the outer peripheral surface scraper 701 is heated by the outer peripheral surface scraper heating device 702. As a result, foreign matter adhering to the outer peripheral surface blade portion 709 is liquefied, flows down from the outer peripheral surface blade portion 709, and is collected in the oil pan 707. Therefore, the foreign matter adhering to the outer peripheral surface blade portion 709 is prevented from adhering again to the outer peripheral surface of the governor sheave 3.

[0057] Furthermore, in the elevator governor foreign object removal device 7 according to embodiment 1, foreign objects adhering to the side surface of the governor sheave 3 are removed from the governor sheave 3 by the side surface scraper 704. This prevents foreign objects adhering to the side surface of the governor sheave 3 from coming into contact with the operating piece 602 of the overspeed detection switch 6. This prevents the overspeed detection switch 6 from making an erroneous detection.

[0058] The side blade 712 of the side scraper 704 is heated by the side scraper heating device 705. As a result, foreign matter adhering to the side blade 712 is liquefied, flows down from the side blade 712, and is collected in the oil pan 707. Therefore, the foreign matter adhering to the side blade 712 is prevented from adhering again to the side surface of the governor sheave 3.

[0059] Next, an elevator governor of a comparative example will be described. Fig. 6 is a front view showing the elevator governor of the comparative example. Fig. 7 is a left side view showing the elevator governor of Fig. 6. The elevator governor of the comparative example differs from the elevator governor of embodiment 1 in that it does not include a foreign object removal device 7. The other configurations of the elevator equipment of the comparative example are similar to the configurations of the elevator governor of embodiment 1.

[0060] Fig. 8 is a front view showing the state in which the governor weight 5 of Fig. 6 is in contact with the overspeed detection switch 6. When the rotational speed of the governor sheave 3 reaches a preset rotational speed, the operating piece 503 of the governor weight 5 comes into contact with the operating piece 602 of the overspeed detection switch 6. As a result, the overspeed detection switch 6 detects that the speed of the car has reached the preset speed. When the overspeed detection switch 6 detects that the speed of the car has reached the preset speed, the supply of power to the sheave (not shown) is stopped. This brings the car to an emergency stop.

[0061] Next, the operation of the elevator governor of the comparative example when a foreign object adheres to the governor sheave 3 of the elevator governor of the comparative example will be described. Fig. 9 is a front view showing a state in which a foreign object adheres to the governor sheave 3 of Fig. 6. Fig. 10 is a left side view showing the elevator governor of Fig. 9. Figs. 9 and 10 show an elevator governor that does not have a foreign object removal device 7, but in the elevator governor described in Patent Document 1, the same operation occurs when foreign objects that have accumulated on the horizontal surface of the opposing part of the foreign object removal device reattach to the side of the governor sheave.

[0062] The governor rope 4 is permeated with oil. Some of the oil that has permeated the governor rope 4 seeps out from the governor rope 4. The oil that seeps out from the governor rope 4 adheres to the governor sheave 3, which is in contact with the governor rope 4. As the oil that seeps out from the governor rope 4 accumulates on the governor sheave 3 one after another, foreign matter 9, which is a lump of solidified oil, adheres to the governor sheave 3.

[0063] Fig. 11 is a front view showing a state in which the foreign object 9 of Fig. 9 is in contact with the overspeed detection switch 6. When the foreign object 9 attached to the governor sheave 3 comes into contact with the operating piece 602 of the overspeed detection switch 6, the overspeed detection switch 6 makes a false detection.

[0064] As described above, the foreign matter removal device 7 of the elevator governor according to the first embodiment includes the outer peripheral surface scraper 701 and the outer peripheral surface scraper heating device 702. The outer peripheral surface scraper 701 removes foreign matter from the outer peripheral surface lower portion 302. The outer peripheral surface scraper heating device 702 heats the outer peripheral surface scraper 701. According to this configuration, the outer peripheral surface scraper 701 removes foreign matter from the outer peripheral surface of the governor sheave 3, and the outer peripheral surface scraper heating device 702 causes the foreign matter attached to the outer peripheral surface scraper 701 to flow down. This makes it possible to suppress the foreign matter attached to the outer peripheral surface scraper 701 from reattaching to the outer peripheral surface of the governor sheave 3. As a result, it is possible to suppress the foreign matter removed from the governor sheave 3 from reattaching to the governor sheave 3.

[0065] Moreover, in the foreign matter removal device 7 for an elevator governor according to the first embodiment, the outer peripheral surface scraper 701 has an outer peripheral surface blade portion 709 whose tip portion faces the outer peripheral surface lower portion 302. The outer peripheral surface blade portion 709 is arranged such that, when viewed along the governor shaft 2, the angle between the tangent half line L and the outer peripheral surface blade portion 709 is greater than 90 degrees. According to this configuration, when foreign matter is successively deposited on the outer peripheral surface scraper 701 from the outer peripheral surface of the governor sheave 3, the foreign matter that was deposited first on the outer peripheral surface scraper 701 is pushed in a direction away from the outer peripheral surface of the governor sheave 3 by the foreign matter that was deposited later. This makes it possible to prevent the foreign matter that has adhered to the outer peripheral surface scraper 701 from adhering again to the outer peripheral surface of the governor sheave 3.

[0066] Furthermore, in the elevator governor foreign object removal device 7 according to embodiment 1, the outer circumferential surface blade portion 709 is arranged to extend downward from the outer circumferential surface foreign object removal target portion 304 when viewed along the governor shaft 2. With this configuration, when foreign objects are successively accumulated on the outer circumferential surface scraper 701 from the outer circumferential surface of the governor sheave 3, the foreign objects that have accumulated first on the outer circumferential surface scraper 701 move due to gravity in a direction away from the outer circumferential surface of the governor sheave 3. This makes it possible to prevent the foreign objects that have adhered to the outer circumferential surface scraper 701 from adhering again to the outer circumferential surface of the governor sheave 3.

[0067] Moreover, the foreign matter removal device 7 of the elevator governor according to the first embodiment includes a side scraper 704 and a side scraper heating device 705. The side scraper 704 removes foreign matter from the side outer circumferential lower portion 303. The side scraper heating device 705 heats the side scraper 704. According to this configuration, the side scraper 704 removes foreign matter from the side of the governor sheave 3, and the side scraper heating device 705 causes the foreign matter attached to the side scraper 704 to flow down. This makes it possible to suppress the foreign matter attached to the side scraper 704 from reattaching to the outer circumferential surface of the governor sheave 3. As a result, it is possible to suppress the foreign matter removed from the governor sheave 3 from reattaching to the governor sheave 3.

[0068] Furthermore, in the elevator governor foreign matter removal device 7 according to embodiment 1, the side scraper 704 has a side blade portion 712 arranged along the side outer circumferential lower portion 303. With this configuration, when foreign matter successively accumulates on the side scraper 704 from the outer circumferential surface of the governor sheave 3, the foreign matter that has accumulated first on the side scraper 704 is pushed downward from the side surface of the governor sheave 3 by the foreign matter that has accumulated later. This makes it possible to prevent the foreign matter that has adhered to the side scraper 704 from adhering again to the outer circumferential surface of the governor sheave 3.

[0069] In the elevator governor foreign object removal device 7 according to the first embodiment, a configuration has been described in which both the outer circumferential surface scraper 701 and the outer circumferential surface scraper heating device 702 and the side scraper 704 and the side scraper heating device 705 are provided. However, this is not limited to this. A configuration may also be provided in which only one of the outer circumferential surface scraper 701 and the outer circumferential surface scraper heating device 702 and the side scraper 704 and the side scraper heating device 705 is provided.

[0070] The foreign object removal device 7 for an elevator governor according to the preferred embodiment 1 has been described above, but the foreign object removal device 7 for an elevator governor according to the above-mentioned embodiment 1 is not limited to this. Various modifications and conversions can be made to the foreign object removal device 7 for an elevator governor according to the above-mentioned embodiment 1 without departing from the scope of the claims.

[0071] (Appendix 1) an outer peripheral surface scraper that removes foreign matter from a lower portion of the outer peripheral surface of the governor sheave that is a portion of the outer peripheral surface that is below the governor shaft; an outer peripheral surface scraper heating device for heating the outer peripheral surface scraper; An elevator governor foreign object removal device comprising: (Appendix 2) an outer peripheral surface scraper temperature sensor for measuring the temperature of the outer peripheral surface scraper; A control device; Equipped with The foreign object removal device for an elevator governor described in Appendix 1, wherein the control device controls the drive of the outer peripheral surface scraper heating device based on the measurement results of the outer peripheral surface scraper temperature sensor. (Appendix 3) The outer peripheral surface scraper has an outer peripheral surface blade portion whose tip portion faces the outer peripheral surface lower portion, a portion of the outer circumferential surface lower portion that faces the tip of the outer circumferential surface blade portion is defined as a target portion for removing outer circumferential surface foreign matter; 3. The elevator governor foreign object removal device according to claim 1 or 2, wherein the outer peripheral surface blade portion is arranged so that, when viewed along the governor shaft, an angle formed between the outer peripheral surface blade portion and a half line that is tangent to the outer peripheral surface portion target for foreign object removal in a circle that constitutes the outer peripheral surface of the governor sheave and is above the outer peripheral surface portion target for foreign object removal is greater than 90 degrees. (Appendix 4) 4. A foreign object removal device for an elevator governor as described in Appendix 3, wherein the outer peripheral blade portion is arranged to extend downward from the outer peripheral foreign object removal target portion when viewed along the governor shaft. (Appendix 5) a side scraper for removing foreign matter from a lower outer circumferential portion of a side surface of the governor sheave, the lower portion being a portion of the side surface of the governor sheave that is lower than the governor shaft; a side scraper heating device for heating the side scraper; 5. A foreign object removal device for an elevator governor according to any one of claims 1 to 4, comprising: (Appendix 6) a side scraper temperature sensor for measuring the temperature of the side scraper; A control device; Equipped with The foreign object removal device for an elevator governor described in Appendix 5, wherein the control device controls the drive of the side scraper heating device based on the measurement results of the side scraper temperature sensor. (Appendix 7) 7. A foreign object removal device for an elevator governor as described in claim 5 or 6, wherein the side scraper has a side blade portion arranged along a lower portion of the outer periphery of the side surface. (Appendix 8) a side scraper for removing foreign matter from a lower outer circumferential portion of a side surface of the governor sheave, the lower portion being a portion of the outer circumferential portion of the side surface of the governor sheave that is below the governor shaft; a side scraper heating device for heating the side scraper; An elevator governor foreign object removal device comprising: [Explanation of symbols]

[0072] 1 frame, 2 governor shaft, 3 governor sheave, 4 governor rope, 5 governor weight, 6 overspeed detection switch, 7 foreign object removal device, 8 machine room floor, 9 foreign object, 101 foundation, 102 first side plate, 103 second side plate, 104 fixed anchor bolt, 301 groove, 302 outer peripheral surface lower portion, 303 side outer peripheral side lower portion, 304 outer peripheral surface foreign object removal target portion, 501 weight shaft, 502 weight body, 503 operating piece, 504 longitudinal one end, 505 longitudinal other end, 601 switch box, 602 operating piece, 701 outer peripheral scraper, 702 outer peripheral scraper heating device, 703 outer peripheral scraper temperature sensor, 704 side scraper, 705 side scraper heating device, 706 Side scraper temperature sensor, 707 oil pan, 708 outer peripheral surface base, 709 outer peripheral surface blade, 710 screw, 711 side base, 712 side blade, 713 screw, 714 screw, 715 control device.

Claims

1. an outer peripheral surface scraper that removes foreign matter from a lower portion of the outer peripheral surface of the governor sheave that is a portion of the outer peripheral surface that is below the governor shaft; an outer peripheral surface scraper heating device for heating the outer peripheral surface scraper; An elevator governor foreign object removal device comprising:

2. an outer peripheral surface scraper temperature sensor for measuring the temperature of the outer peripheral surface scraper; A control device; Equipped with 2. The foreign object removal device for an elevator governor according to claim 1, wherein the control device controls the drive of the outer peripheral surface scraper heating device based on a measurement result of the outer peripheral surface scraper temperature sensor.

3. The outer peripheral surface scraper has an outer peripheral surface blade portion whose tip portion faces the outer peripheral surface lower portion, a portion of the outer circumferential surface lower portion that faces the tip of the outer circumferential surface blade portion is defined as a target portion for removing outer circumferential surface foreign matter; 3. The elevator governor foreign object removal device according to claim 1 or 2, wherein the outer peripheral surface blade portion is arranged so that, when viewed along the governor shaft, an angle formed between the outer peripheral surface blade portion and a half line that is tangent to the outer peripheral surface portion target for foreign object removal in a circle constituting the outer peripheral surface of the governor sheave and that is above the outer peripheral surface portion target for foreign object removal is greater than 90 degrees.

4. 4. The elevator governor foreign object removal device according to claim 3, wherein the outer peripheral blade portion is arranged so as to extend downward from the outer peripheral foreign object removal target portion when viewed along the governor shaft.

5. a side scraper for removing foreign matter from a lower outer circumferential portion of a side surface of the governor sheave, the lower portion being a portion of the side surface of the governor sheave that is lower than the governor shaft; a side scraper heating device for heating the side scraper; 3. The elevator governor foreign object removal device according to claim 1, further comprising:

6. a side scraper temperature sensor for measuring the temperature of the side scraper; A control device; Equipped with 6. The foreign object removal device for an elevator governor according to claim 5, wherein the control device controls the driving of the side scraper heating device based on a measurement result of the side scraper temperature sensor.

7. 6. The foreign object removal device for an elevator governor according to claim 5, wherein the side scraper has a side blade portion disposed along a lower portion of the outer periphery of the side surface.

8. a side scraper for removing foreign matter from a lower outer circumferential portion of a side surface of the governor sheave, the lower portion being a portion of the outer circumferential portion of the side surface of the governor sheave that is below the governor shaft; a side scraper heating device for heating the side scraper; An elevator governor foreign object removal device comprising:

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