Rope oil supply device and rope oil supply method for elevator

Abstract

To provide a rope oil supply device and a rope oil supply method for an elevator, which can reduce a maintenance work load.SOLUTION: This rope oil supply device for an elevator comprises an oil supply unit, a detection unit and a control unit. The oil supply unit supplies oil to a rope hooked on a sheave of the elevator and connected to a car of the elevator to lift the car. The detection unit detects a physical amount related to scattering of the oil from the rope. The control unit causes the oil supply unit to stop the supplying of the oil to the rope when the oil scattering from the rope is detected on the basis of the detected physical amount.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present embodiment relates to an elevator rope oiling device and an elevator rope oiling method. [Background technology]

[0002] BACKGROUND ART Conventionally, elevators equipped with a rope oil supply device that supplies oil to ropes that raise and lower a car are known. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2009-167006 [Patent Document 2] Japanese Patent Application Laid-Open No. 2004-203523 Summary of the Invention [Problem to be solved by the invention]

[0004] In this type of elevator, depending on the environment in which the elevator is installed, the amount of oil supplied to the rope from the rope oil supply device may become excessive, causing oil to splash from the rope and stain elevator components around the rope, such as the car. This stain must be cleaned by workers, which increases the burden of maintenance work on the workers.

[0005] The problem to be solved by the present invention is to provide an elevator rope oiling device and an elevator rope oiling method that can reduce the burden of maintenance work. [Means for solving the problem]

[0006] An elevator rope oiling device according to an embodiment includes an oil supply unit, a detection unit, and a control unit. The oil supply unit supplies oil to a rope that is wound around an elevator sheave and connected to an elevator car to raise and lower the car. The detection unit detects a physical quantity related to the oil scattering from the rope. When the control unit detects the oil scattering from the rope based on the detected physical quantity, it causes the oil supply unit to stop supplying the oil to the rope. [Brief explanation of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of an elevator according to a first embodiment. [Figure 2] FIG. 2 is a perspective view showing an oil supply unit in the rope oil supply device of the first embodiment. [Figure 3] FIG. 3 is a diagram showing a schematic configuration of an oil supply unit in the rope oil supply device of the first embodiment, showing a state in which the oil supply member is located at an oil supply position. [Figure 4] FIG. 4 is a diagram showing a schematic configuration of an oil supply unit in the rope oil supply device of the first embodiment, showing a state in which the oil supply member is located at a retracted position. [Figure 5] FIG. 5 is a diagram showing a part of an elevator including a detection unit of the rope oiling device of the first embodiment. [Figure 6] FIG. 6 is a perspective view showing an oil reservoir in the detection unit of the rope oiling device of the first embodiment. [Figure 7] FIG. 7 is a flowchart showing the oil supply control process executed by the control unit of the rope oil supply device of the first embodiment. [Figure 8] FIG. 8 is a diagram showing a schematic configuration of a rope oiling device according to the second embodiment, illustrating an oiling state of the rope oiling device. [Figure 9] FIG. 9 is a diagram showing a schematic configuration of a rope oiling device of the second embodiment, illustrating a state in which oiling of the rope oiling device is stopped. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an elevator rope oiling device and an elevator rope oiling method according to embodiments will be described in detail with reference to the accompanying drawings. However, the present invention is not limited to these embodiments.

[0009] First Embodiment 1 is a diagram showing a schematic configuration of an elevator 1 according to a first embodiment. In this drawing, an elevator 1 having a machine room 8 is illustrated as an example, but this embodiment is applicable regardless of whether or not the machine room 8 is present.

[0010] As shown in the drawings, for convenience, the present specification defines an X-axis, a Y-axis, and a Z-axis. The X-axis, the Y-axis, and the Z-axis are perpendicular to each other. The X-axis and the Y-axis are perpendicular to the vertical direction. The Z-axis is provided along the vertical direction.

[0011] As shown in Fig. 1, elevator 1 is installed in a building with multiple floors. Elevator 1 includes a hoistway 2 extending vertically, a car 5, a rope 6, and a counterweight 7. Elevator 1 is also provided with multiple landings (not shown) along hoistway 2, and each landing is provided with a door (not shown). Note that Fig. 1 illustrates an elevator 1 having a single car 5, but this embodiment is also applicable to elevators 1 having multiple cars 5.

[0012] The elevator 1 is a so-called bucket elevator in which a car 5 is connected to one end of a rope 6 and a counterweight 7 is connected to the other end of the rope 6. Each landing is provided on a different floor of the building. Each landing is provided with a door. The elevator 1 moves the car 5 up and down in the hoistway 2, thereby transporting passengers from one landing to another on any floor. When the car 5 arrives at a landing, passengers can get on and off the car 5 through a door provided at that landing. The elevator 1 moves the car 5 to the floor for which a call is registered, based on call registration made by operating an operation panel inside the car and a landing operation panel provided at each floor's landing.

[0013] The elevator 1 further includes a machine room 8, a hoisting machine 9, a deflection sheave 10, an elevator control panel 13, and a rope oiling device 20. The machine room 8 is provided vertically above the hoistway 2. The rope oiling device 20 is also referred to as a rope oiling control device.

[0014] The hoisting machine 9 includes a hoisting sheave 14 and a hoisting motor (not shown) that rotates the hoisting sheave 14. The rope 6 is wound around the hoisting sheave 14 and the deflecting sheave 10 so that the end of the rope 6 on the car 5 side hangs down toward the hoisting sheave 14. When the hoisting motor drives and rotates the hoisting sheave 14, the hoisting sheave 14 moves (runs) the rope 6 by the frictional force generated between the hoisting sheave 14 and the rope 6. The hoisting machine 9 and the deflecting sheave 10 are arranged on the floor 8a of the machine room 8 via a machine beam and a machine bed (not shown). The hoisting sheave 14 is an example of a sheave.

[0015] The elevator control panel 13 is electrically connected to the hoisting motor, the car operation panel (not shown) installed in the car 5, the rope oiling device 20, and the landing operation panels (not shown) installed at each landing, etc., and controls the operation of the elevator 1 in an integrated manner.

[0016] For example, the elevator control panel 13 determines the floor at which the car 5 is to stop in response to an operation input from the user to an in-car operation panel or a hall operation panel, and registers the call. Then, the elevator control panel 13 controls the drive of the hoisting motor to move the car 5 to the floor at which it is to stop.

[0017] The elevator control panel 13 includes, for example, an arithmetic unit, a storage device, and a communication interface device. In other words, the elevator control panel 13 has a configuration similar to that of a computer. The storage device is a device capable of storing data and programs. The storage device is configured with a ROM (Read Only Memory), a RAM (Random Access Memory), a flash memory, an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a combination thereof. The arithmetic unit is, for example, a CPU (Central Processing Unit). The arithmetic unit realizes the above-mentioned control based on a control program pre-installed in the storage device. Note that the configuration of the elevator control panel 13 does not necessarily have to be the same as that of a computer.

[0018] One end of the rope 6 is connected to the car 5, and the other end of the rope 6 is connected to the counterweight 7. The rope 6 is wound around the hoisting sheave 14, and raises and lowers the car 5 by the rotation of the hoisting sheave 14. The rope 6 is, for example, an independent wire rope core (IWRC) or a resin core. A rope 6 with a wire rope core or a resin core is less likely to contain grease. For this reason, in this embodiment, a rope oiling device 20 is provided that supplies oil 100 to the rope 6. Note that the rope oiling device 20 may be provided even if the rope 6 has a different configuration.

[0019] Rope oiling device 20 includes oil supply unit 21, detection unit 22, and control unit 23. Oil supply unit 21 supplies oil 100 to rope 6. Oil 100 is a lubricating oil. Detection unit 22 detects a physical quantity related to the scattering of oil 100 from rope 6. When control unit 23 detects the scattering of oil 100 from rope 6 based on the detected physical quantity, it causes oil supply unit 21 to stop supplying oil 100 to rope 6.

[0020] Fig. 2 is a perspective view showing oil supply unit 21 in rope oil supply device 20 of the first embodiment. Fig. 3 is a diagram showing the schematic configuration of oil supply unit 21 in rope oil supply device 20 of the first embodiment, showing a state in which oil supply member 31 is located at the oil supply position. Fig. 4 is a diagram showing the schematic configuration of oil supply unit 21 in rope oil supply device 20 of the first embodiment, showing a state in which oil supply member 31 is located at the retracted position.

[0021] As shown in FIGS. 2 to 4, fuel supply unit 21 has tank 30, fuel supply member 31, and member moving mechanism 32.

[0022] As shown in Fig. 1, the tank 30 is fixed to, for example, the floor 8a of the machine room 8 via fixing members 24. The tank 30 stores oil 100. In detail, as shown in Figs. 3 and 4, an oil chamber 30a is provided inside the tank 30, and the oil 100 is stored in this oil chamber 30a. The oil 100 in the tank 30 is managed by, for example, being replenished by an operator during inspection, etc.

[0023] The oil supply member 31 is made of, for example, felt and is flexible. The oil supply member 31 has a first end 31a and a second end 31b. The first end 31a is immersed in the oil 100 in the tank 30. The second end 31b is the end opposite the first end 31a and is in contact with the rope 6. The oil supply member 31 moves the oil 100 in the tank 30 to the rope 6. More specifically, the oil supply member 31 sucks up the oil 100 in the tank and moves it to the rope 6 by capillary action. Note that the oil supply member 31 is not limited to the above.

[0024] The member moving mechanism 32 can move the oil supply member 31 between an oil supply position (FIG. 3) where the second end 31b of the oil supply member 31 contacts the rope 6, and a retracted position (FIG. 4) where the second end 31b of the oil supply member 31 is separated from the rope 6. The oil supply member 31 positioned at the oil supply position has the second end 31b in contact with the rope 6, so it can supply oil to the rope 6. On the other hand, the oil supply member 31 positioned at the retracted position has the second end 31b separated from the rope 6, so it cannot supply oil to the rope 6.

[0025] As shown in FIGS. 2 to 4, the member moving mechanism 32 has a motor 33, a motion conversion mechanism , and a support member .

[0026] The motor 33 is disposed on the upper surface of the tank 30. The motor 33 is controlled by the control unit 23. A portion of the fuel supply member 31 that is located outside the tank 30 is attached to the support member 35. The support member 35 is, for example, a metal fitting. The support member 35 is also referred to as a mounting fitting.

[0027] The motion converting mechanism 34 includes a ball screw 36, a nut member 37, a pair of guide members 38, a pair of guided members 39, and a connecting member 40. The ball screw 36 extends in the X direction, which is the direction in which the rope 6 and the oil supply member 31 face each other. The ball screw 36 is rotated by the motor 33. The nut member 37 is coupled (threaded) to the ball screw 36. The nut member 37 is supported by the pair of guide members 38 via the connecting member 40 and the pair of guided members 39. The pair of guide members 38 prevent the nut member 37 from rotating around the ball screw 36 and support the nut member 37 so as to be linearly movable in the axial direction (X direction) of the ball screw 36. The pair of guide members 38 are fixed to the upper surface of the tank 30. The nut member 37 is coupled to a portion of the oil supply member 31 located outside the tank 30 via the connecting member 40 and the support member 35.

[0028] In the above configuration, when the ball screw 36 is rotated by the motor 33, the ball screw 36 and the nut member 37 convert the rotational motion of the ball screw 36 into linear motion of the nut member 37, and the nut member 37 moves in the opposing direction (X direction) between the rope 6 and the oil supply member 31. At this time, the oil supply member 31 moves integrally with the nut member 37 in the opposing direction (X direction) between the rope 6 and the oil supply member 31. Note that it is sufficient that at least the second end 31b of the oil supply member 31 moves integrally with the nut member 37. In other words, only a portion of the oil supply member 31, including the second end 31b, may move integrally with the nut member 37, or the entire oil supply member 31 may move integrally with the nut member 37. The ball screw 36 is also referred to as a rotating member, and the nut member 37 is also referred to as a linear motion member.

[0029] 1, the detection unit 22 is disposed in the vicinity of the hoisting sheave 14 in the machine room 8. The detection unit 22 is also disposed above the fuel supply unit 21 in the vertical direction.

[0030] Fig. 5 is a diagram showing a part of the elevator 1 including the detection unit 22 of the rope oiling device 20 of the first embodiment. Fig. 6 is a perspective view showing the oil reservoir 50 in the detection unit 22 of the rope oiling device 20 of the first embodiment.

[0031] 5, the detection unit 22 has an oil reservoir 50 and a load cell 51. The load cell 51 is an example of a measurement unit. The oil reservoir 50 is also called an oil reservoir.

[0032] The oil reservoir 50 is installed in the machine room 8 around the hoisting sheave 14 and in the vicinity of the hoisting sheave 14. This arrangement is because the portion of the rope 6 that is wound around the hoisting sheave 14 (hereinafter referred to as the first portion 6a) is more susceptible to oil scattering due to centrifugal force than other portions. The oil reservoir 50 faces the first portion 6a of the rope 6, and receives and stores oil 100 that is scattered from the rope 6 while the rope 6 is moving, etc.

[0033] Specifically, as shown in FIG. 6 , the oil reservoir 50 is box-shaped and has an opening 50g for receiving oil 100. The oil reservoir 50 has a lower wall 50a, an upper wall 50b, a front wall 50c, a rear wall 50d, and a pair of side walls 50e and 50f. The front wall 50c has an opening 50g. The opening 50g is connected to the interior of the oil reservoir 50. The opening 50g is aligned with the first portion 6a of the rope 6 in a direction perpendicular to the vertical direction via the opening 15c of the sheave cover 15, and faces the first portion 6a. The opening 50g is also aligned with the center of rotation C1 of the hoisting sheave 14 in a direction perpendicular to the vertical direction. In other words, the opening 50g is located on a line L1 that passes through the center of rotation C1 of the hoisting sheave 14 and is perpendicular to the vertical direction. The upper wall 50b is inclined with respect to the vertical direction so as to rise upward as it approaches the rope 6 (hoisting sheave 14). This allows the opening 50g to be enlarged and the outer shape of the oil reservoir 50 to be reduced in size.

[0034] Here, the sheave cover 15 is a cover that covers the hoisting sheave 14. The sheave cover 15 has an upper wall 15a and a peripheral wall 15b. An opening 15c is provided in the peripheral wall 15b.

[0035] As shown in FIG. 5 , the load cell 51 is disposed vertically below the oil reservoir 50 in the machine room 8 and is fixed to the machine room 8. The oil reservoir 50 is fixed to the measurement surface, which is the upper surface of the load cell 51. The load cell 51 measures the mass of the oil reservoir 50 as a physical quantity related to the scattering of the oil 100 from the rope 6. The mass of the oil reservoir 50 includes the mass of the oil reservoir 50 itself and the mass of the oil stored in the oil reservoir 50. Therefore, the mass of the oil reservoir 50 increases as the amount of oil stored in the oil reservoir 50 increases. Note that the physical quantity related to the scattering of the oil 100 from the rope 6 is not limited to the above. For example, the physical quantity may be the amount (mass, volume, etc.) of the oil 100 in the oil reservoir 50. Furthermore, part of the wiring of the load cell 51 is arranged, for example, along the wiring of the hoist 9. At this time, a part of the wiring of the load cell 51 may be bundled with the wiring of the hoisting machine 9, for example.

[0036] The control unit 23 includes, for example, an arithmetic unit, a storage device, and a communication interface device. That is, the control unit 23 has a configuration similar to that of a computer. The storage device is a device capable of storing data and programs. The storage device is configured with a ROM (Read Only Memory), a RAM (Random Access Memory), a flash memory, an HDD (Hard Disk Drive), an SSD (Solid State Drive), or a combination thereof. The arithmetic unit is, for example, a CPU (Central Processing Unit). The arithmetic unit realizes the above-mentioned control based on a control program pre-installed in the storage device. Note that the configuration of the control unit 23 does not necessarily have to be the same as that of a computer.

[0037] The control unit 23 is connected to the elevator control panel 13 and the rope oiling device 20.

[0038] The control unit 23 receives (acquires) the physical quantity detected by the detection unit 22, that is, the mass of the oil reservoir 50, from the detection unit 22.

[0039] When the control unit 23 detects the scattering of oil 100 from the rope 6 based on the detected mass of the oil storage unit 50, it causes the oil supply unit 21 to stop supplying the oil 100 to the rope 6. As an example, when the detected mass of the oil storage unit 50 is equal to or less than a threshold, the control unit 23 determines that the scattering of oil 100 from the rope 6 has not been detected, and when the detected mass of the oil storage unit 50 exceeds the threshold, it determines that the scattering of oil 100 from the rope 6 has been detected. Therefore, when the detected mass of the oil storage unit 50 exceeds the threshold, the control unit 23 causes the oil supply unit 21 to stop supplying the oil 100 to the rope 6. Specifically, the control unit 23 causes the member moving mechanism 32 to move the oil supply member 31 from the oil supply position to the retracted position, thereby causing the oil supply unit 21 to stop supplying the oil 100 to the rope 6. That is, the control unit 23 causes the oil supply member 31 to move away from the rope 6, thereby causing the oil supply unit 21 to stop supplying the oil 100 to the rope 6.

[0040] Next, a description will be given of the oil supply control process (oil supply control method) executed by the control unit 23 of the rope oil supply device 20 of the first embodiment. Fig. 7 is a flowchart showing the oil supply control process executed by the control unit 23 of the rope oil supply device 20 of the first embodiment.

[0041] The refueling control process is executed, for example, a predetermined number of times (for example, once) per day. The refueling control process is started when the refueling member 31 is located at the refueling position (FIG. 3).

[0042] As shown in FIG. 7, first, the control unit 23 measures (detects) the mass of the oil reservoir 50 using the load cell 51 (S100).

[0043] Next, the control unit 23 determines whether the measured mass of the oil reservoir 50 exceeds a threshold value (S101).

[0044] When the control unit 23 determines that the measured mass of the oil reservoir 50 exceeds the threshold value (S101: Yes), it determines whether the car 5 is stopped or not (S102). The control unit 23 acquires information indicating whether the car 5 is stopped or not from the elevator control panel 13, and determines whether the car 5 is stopped or not based on the information. When the control unit 23 determines that the car 5 is not stopped, that is, that the car 5 is moving (S102: No), it waits for the car 5 to stop.

[0045] When the control unit 23 determines that the car 5 is stopped (S102: Yes), it determines whether or not a call has been registered (S103). The control unit 23 acquires information indicating whether or not a call has been registered from the elevator control panel 13, and determines whether or not a call has been registered based on the information. When the control unit 23 determines that a call has been registered (S103: Yes), it waits until there are no more call registrations.

[0046] When the control unit 23 determines that the car 5 is stopped (S102: Yes) and that no call is registered (S103: No), it issues an alert and moves the oil supply member 31 to a retracted position (S104). The alert is issued, for example, by issuing (transmitting) oil scattering information to a monitoring device (not shown) in a monitoring center. The oil scattering information is information indicating that oil is scattering from the rope 6. The monitoring center is installed in a location separate from the installation location of the elevator 1 and monitors the elevator 1. This alert allows workers at the monitoring center to know that oil is scattering from the rope 6. In addition, the control unit 23 controls the member moving mechanism 32 to move the oil supply member 31 from the oil supply position to a retracted position. As a result, the oil supply member 31 moves away from the rope 6, and the supply of oil to the rope 6 by the oil supply unit 21 stops.

[0047] Next, the control unit 23 determines whether the mass of the oil reservoir 50 has increased (S105). In other words, the control unit 23 determines whether the increase in the mass of the oil reservoir 50 is zero. Specifically, the control unit 23 measures (detects) the mass of the oil reservoir 50 again using the load cell 51, and determines whether the mass of the oil reservoir 50 measured this time has increased compared to the mass of the oil reservoir 50 measured previously. The first measurement is the measurement in S100. The second and subsequent measurements are measurements in S105. Therefore, the second mass measurement result is compared with the first mass measurement result in S100, and the third and subsequent mass measurement results are compared with the previous measurement result in S105. The second and subsequent mass measurements are performed at predetermined time intervals.

[0048] When the control unit 23 determines that the mass of the oil reservoir 50 has increased (S105: Yes), the control unit 23 waits until the increase in the mass of the oil reservoir 50 stops.

[0049] When the control unit 23 determines that the mass of the oil reservoir 50 has not increased (S105: No), it determines whether the car 5 is stopped or not (S106). The control unit 23 acquires information indicating whether the car 5 is stopped or not from the elevator control panel 13, and determines whether the car 5 is stopped or not based on the information. When the control unit 23 determines that the car 5 is not stopped, that is, that the car 5 is moving (S106: No), it waits for the car 5 to stop.

[0050] When the control unit 23 determines that the car 5 is stopped (S106: Yes), it determines whether or not a call has been registered (S107). The control unit 23 acquires information indicating whether or not a call has been registered from the elevator control panel 13, and determines whether or not a call has been registered based on the information. When the control unit 23 determines that a call has been registered (S107: Yes), it waits until there are no more call registrations.

[0051] When the control unit 23 determines that the car 5 is stopped (S106: Yes) and that no call is registered (S107: No), it moves the oil supply member 31 to the oil supply position (S108). The control unit 23 controls the member moving mechanism 32 to move the oil supply member 31 from the retracted position to the oil supply position. This brings the oil supply member 31 into contact with the rope 6, and the oil supply unit 21 resumes supplying oil to the rope 6.

[0052] Furthermore, in S101, when the control unit 23 determines that the measured mass of the oil reservoir 50 does not exceed the threshold value (S101: No), the control unit 23 ends the process.

[0053] When an alarm is issued in S104 of the above process, for example, a worker such as a maintenance worker removes oil from oil reservoir 50 and cleans oil reservoir 50 when inspecting elevator 1 during maintenance work or the like. The worker also resets the mass data stored in control unit 23. The mass data is data on the measured mass of oil reservoir 50. The mass data stored in control unit 23 can be reset via elevator control panel 13, for example.

[0054] As described above, in this embodiment, the rope oiling device 20 of the elevator 1 includes the oil supply unit 21, the detection unit 22, and the control unit 23. The oil supply unit 21 supplies oil 100 to the rope 6 that is wound around the hoisting sheave 14 (sheave) of the elevator 1 and is connected to the car 5 of the elevator 1 to raise and lower the car 5. The detection unit 22 detects a physical quantity related to the scattering of the oil 100 from the rope 6. When the control unit 23 detects the scattering of the oil 100 from the rope 6 based on the detected physical quantity, it causes the oil supply unit 21 to stop supplying the oil 100 to the rope 6.

[0055] According to this configuration, when the control unit 23 detects the scattering of the oil 100 from the ropes 6 based on the detected physical quantity, it causes the oil supply unit 21 to stop supplying the oil 100 to the ropes 6, thereby preventing the oil 100 from the ropes 6 from contaminating the components of the elevator 1 around the ropes 6, such as the car 5. Therefore, according to the above configuration, the labor required for the worker (maintenance worker) to clean the oil 100 stains is reduced, thereby reducing the burden of the maintenance work on the worker. For example, according to the above configuration, the scattering of the oil 100 from the ropes 6 is suppressed, thereby preventing the scattering oil 100 from leaking into the car 5 and contaminating the hoistway 2 or the upper part of the car 5. Therefore, the number of times that the worker must periodically clean these components can be reduced.

[0056] Furthermore, the oil supply unit 21 includes a tank 30, an oil supply member 31, and a member moving mechanism 32. The tank 30 stores oil 100. The oil supply member 31 has a first end 31a that is immersed in the oil 100 in the tank 30 and a second end 31b that contacts the rope 6, and moves the oil 100 in the tank 30 to the rope 6. The member moving mechanism 32 can move the oil supply member 31 between an oil supply position where the second end 31b contacts the rope 6 and a retracted position where the second end 31b is separated from the rope 6. When the control unit 23 detects the scattering of oil 100 from the rope 6 based on the detected physical quantity, it causes the member moving mechanism 32 to move the oil supply member 31 from the oil supply position to the retracted position, thereby causing the oil supply unit 21 to stop supplying oil 100 to the rope 6. One of the first end 31a and the second end 31b is also referred to as one end, and the other is also referred to as the other end.

[0057] According to this configuration, the control unit 23 causes the member moving mechanism 32 to move the oil supply member 31 from the oil supply position to the retracted position, thereby causing the oil supply unit 21 to stop supplying oil 100 to the rope 6, so that the supply of oil 100 to the rope 6 can be stopped in a relatively short time.

[0058] The detection unit 22 also has an oil reservoir 50 and a load cell 51 (measurement unit). The oil reservoir 50 faces the first portion 6a (portion) of the rope 6 that is wound around the hoisting sheave 14, and receives and stores the oil 100 that has scattered from the rope 6. The load cell 51 measures the mass of the oil reservoir 50 as a physical quantity.

[0059] With this configuration, the control unit 23 can detect the scattering of the oil 100 from the rope 6 based on the mass of the oil reservoir 50.

[0060] Furthermore, the rope oiling method for elevator 1 of this embodiment includes multiple steps. One step is a step in which oil supply unit 21 supplies oil 100 to rope 6 that is wound around hoisting sheave 14 of elevator 1 and is connected to car 5 of elevator 1 to raise and lower car 5. Another step is a step in which detection unit 22 detects a physical quantity related to the scattering of oil 100 from rope 6. Another step is a step in which control unit 23, when detecting the scattering of oil 100 from rope 6 based on the detected physical quantity, causes oil supply unit 21 to stop supplying oil 100 to rope 6.

[0061] According to this configuration, when control unit 23 detects the scattering of oil 100 from rope 6 based on the detected physical quantity, it causes oil supply unit 21 to stop supplying oil 100 to rope 6, thereby preventing the oil 100 from the rope 6 from contaminating components of elevator 1 around rope 6, such as car 5. Therefore, according to the above configuration, the effort required for workers (maintenance personnel) to clean up oil 100 stains is reduced, thereby reducing the burden of maintenance work on workers.

[0062] In the present embodiment, the tank 30 does not move when the fuel supply member 31 is moved between the fuel supply position and the retracted position, but the present invention is not limited to this. For example, the tank 30 may move integrally with the fuel supply member 31 when the fuel supply member 31 is moved between the fuel supply position and the retracted position.

[0063] <Second embodiment> Fig. 8 is a diagram showing a schematic configuration of the rope oiling device 20 of the second embodiment, and is a diagram showing an oiling state of the rope oiling device 20. Fig. 9 is a diagram showing a schematic configuration of the rope oiling device 20 of the second embodiment, and is a diagram showing an oiling stopped state of the rope oiling device 20.

[0064] As shown in FIGS. 8 and 9, this embodiment differs from the first embodiment mainly in the configuration of the rope oiling device 20.

[0065] The tank 30 of the rope oiling device 20 of this embodiment is provided with a partition wall 60. Furthermore, the rope oiling device 20 of this embodiment includes an oil moving device 61 instead of the member moving mechanism 32 (FIG. 2).

[0066] The partition wall 60 is provided in the tank 30 and divides the oil chamber 30a into a first oil chamber 30aa and a second oil chamber 30ab, separating the first oil chamber 30aa from the second oil chamber 30ab. The first oil chamber 30aa and the second oil chamber 30ab are each capable of storing oil 100.

[0067] The first end 31a of the oil supply member 31 is immersed in the oil 100 in the first oil chamber 30aa. The second end 31b of the oil supply member 31 contacts the rope 6. The oil supply member 31 moves the oil 100 in the first oil chamber 30aa to the rope 6 by capillary action. In this embodiment, the oil supply member 31 does not move.

[0068] When oil 100 is supplied to the rope 6 by the oil supply member 31, the oil 100 is stored in the first oil chamber 30aa. When the supply of oil 100 to the rope 6 by the oil supply member 31 is stopped, the oil in the first oil chamber 30aa is moved to the second oil chamber 30ab by the oil moving device 61.

[0069] The oil moving device 61 has a pump 62, a motor 63, and two pipes 64, 65. The pump 62 is rotationally driven by the motor 63. The motor 63 is controlled by the control unit 23. That is, the pump 62 is controlled by the control unit 23 via the motor 63. The pump 62 has a first port connected to the pipe 64 and a second port connected to the pipe 65. The pipe 64 extends from the pump 62 to the first oil chamber 30aa of the tank 30. An opening 66 is provided at the lower end of the pipe 64. The pipe 65 extends from the pump 62 to the second oil chamber 30ab of the tank 30. An opening 67 is provided at the lower end of the pipe 65.

[0070] In the above configuration, when the pump 62 is driven to rotate in the forward direction by the motor 63, the pump 62 sucks up the oil 100 in the first oil chamber 30aa through the opening 66 of the pipe 64 and discharges the oil from the opening 67 of the pipe 65 to the second oil chamber 30ab. As a result, the oil 100 in the first oil chamber 30aa moves to the second oil chamber 30ab. On the other hand, when the pump 62 is driven to rotate in the reverse direction by the motor 63, the pump 62 sucks up the oil 100 in the second oil chamber 30ab through the opening 67 of the pipe 65 and discharges the oil from the opening 66 of the pipe 64 to the first oil chamber 30aa. As a result, the oil 100 in the second oil chamber 30ab moves to the first oil chamber 30aa. In addition, if the pump 62 is configured to move the oil 100 in only one direction regardless of the rotation direction, a change mechanism may be provided to change the connection destination of the suction port and discharge port of the pump 62 to either the pipe 64 or the pipe 65. In this case, by changing the connection destination of the suction port and discharge port of the pump 62, the oil 100 can be moved from one of the first oil chamber 30aa and the second oil chamber 30ab to the other.

[0071] In this embodiment, when oiling the rope 6, oil 100 is stored in the first oil chamber 30aa, and the oil supply member 31 supplies the oil 100 to the rope 6. From this state, when the control unit 23 detects the scattering of oil 100 from the rope 6 based on the physical quantity detected by the detection unit 22, i.e., the mass of the oil storage unit 50, the control unit 23 causes the pump 62 to move the oil 100 in the first oil chamber 30aa to the second oil chamber 30ab, thereby causing the oil supply unit 21 to stop supplying the oil 100 to the rope 6. At this time, the control unit 23 rotates the pump 62 forward. Furthermore, from this state, when the control unit 23 resumes supplying the oil 100 to the rope 6, the control unit 23 causes the pump 62 to move the oil 100 in the second oil chamber 30ab to the first oil chamber 30aa. At this time, the control unit 23 rotates the pump 62 reversely.

[0072] As described above, in this embodiment, the rope oiling device 20 of the elevator 1 includes the oil supply unit 21, which includes the tank 30, the oil supply member 31, and the pump 62. The tank 30 includes the first oil chamber 30aa that stores oil 100 and the second oil chamber 30ab that is separated from the first oil chamber 30aa. The oil supply member 31 has a first end 31a that is immersed in the oil 100 in the first oil chamber 30aa and a second end 31b that contacts the rope 6, and moves the oil 100 in the first oil chamber 30aa to the rope 6. The pump 62 moves the oil 100 in the first oil chamber 30aa to the second oil chamber 30ab. When the control unit 23 detects the scattering of oil 100 from the rope 6 based on the detected physical quantity, it causes the pump 62 to move the oil 100 in the first oil chamber 30aa to the second oil chamber 30ab, thereby causing the oil supply unit 21 to stop supplying oil 100 to the rope 6.

[0073] According to this configuration, when the control unit 23 detects the scattering of oil 100 from the rope 6 based on the detected physical quantity, it causes the pump 62 to move the oil 100 in the first oil chamber 30aa to the second oil chamber 30ab, thereby causing the oil supply unit 21 to stop supplying oil 100 to the rope 6. Therefore, the supply of oil 100 to the rope 6 can be stopped without moving the oil supply member 31 away from the rope 6.

[0074] In the above-described embodiments, examples have been shown in which the elevator 1 includes a machine room 8, but the present invention is not limited to this. For example, the rope oiling device 20 can also be applied to an elevator 1 that does not include a machine room 8. In an elevator 1 that does not include a machine room 8, for example, the hoisting machine 9 is provided at the top (near the ceiling) of the hoistway 2. Furthermore, the oil supply unit 21 and the detection unit 22 of the rope oiling device 20 can be disposed near the hoisting sheave 14. In this case, the oil supply unit 21 and the detection unit 22 of the rope oiling device 20 can be disposed on a machine bed to which the hoisting machine 9 is fixed.

[0075] Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included within the scope and spirit of the invention, and are also included in the scope of the invention and its equivalents as defined in the claims. [Explanation of symbols]

[0076] 1...elevator, 5...car, 6...rope, 6a...first part (part), 14...hoisting sheave (sheave), 20...rope oiling device, 21...oil supply unit, 22...detection unit, 23...control unit, 30...tank, 30aa...first oil chamber, 30ab...second oil chamber, 31...oil supply member, 31a...first end, 31b...second end, 32...member moving mechanism, 50...oil storage unit, 51...load cell (measuring unit), 62...pump, 100...oil.

Claims

1. an oil supply unit that supplies oil to a rope that is wound around a sheave of an elevator and is connected to a car of the elevator to raise and lower the car; a detection unit that detects a physical quantity related to the oil splashing from the rope; a control unit that causes the oil supply unit to stop supplying the oil to the rope when splashing of the oil from the rope is detected based on the detected physical quantity; An elevator rope oiling device comprising:

2. The fuel supply unit includes: a tank for storing the oil; an oil supply member having a first end immersed in the oil in the tank and a second end contacting the rope, the oil supply member moving the oil in the tank to the rope; a member moving mechanism that can move the oil supply member between an oil supply position where the second end contacts the rope and a retracted position where the second end is separated from the rope; and When the control unit detects the scattering of the oil from the rope based on the detected physical quantity, the control unit causes the member moving mechanism to move the oil supply member from the oil supply position to the retracted position, thereby causing the oil supply unit to stop supplying the oil to the rope.

2. The elevator rope oiling device according to claim 1.

3. The fuel supply unit includes: a tank provided with a first oil chamber for storing the oil and a second oil chamber separated from the first oil chamber; an oil supply member having a first end immersed in the oil in the first oil chamber and a second end contacting the rope, and moving the oil in the first oil chamber to the rope; a pump that moves the oil in the first oil chamber to the second oil chamber; and When the control unit detects the scattering of the oil from the rope based on the detected physical quantity, the control unit causes the pump to move the oil in the first oil chamber to the second oil chamber, thereby causing the oil supply unit to stop supplying the oil to the rope.

2. The elevator rope oiling device according to claim 1.

4. The detection unit an oil reservoir portion that faces a portion of the rope that is wound around the sheave and receives and stores the oil that has scattered from the rope; a measuring unit that measures the mass of the oil reservoir as the physical quantity; having The elevator rope oiling device according to any one of claims 1 to 3.

5. a step of supplying oil to a rope in which an oil supply unit is wound around a sheave of an elevator and is connected to a car of the elevator to raise and lower the car; a step in which a detection unit detects a physical quantity related to the oil scattering from the rope; a step of causing the oil supply unit to stop supplying the oil to the rope when the control unit detects the oil scattering from the rope based on the detected physical quantity; An elevator rope oiling method including:

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