Elevator rope oiling device and elevator rope oiling method

Abstract

To provide an elevator rope oiling device and an elevator rope oiling method capable of reducing the load of maintenance work. [Solution] 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 is connected to the elevator car to raise and lower the car. The detection unit detects a physical quantity related to oil scattering from the rope. When the control unit detects oil scattering from the rope based on the detected physical quantity, it causes the oil supply unit to stop supplying oil to the rope.

Description

[Technical field]

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

[0002] 2. Description of the Related Art Elevators equipped with a rope oil supply device that supplies oil to a rope that raises and lowers a car are known. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2009-167006 A [Patent Document 2] JP 2004-203523 A 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 from the rope oil supply device to the rope may become excessive, causing the oil to splash from the rope and contaminate elevator components around the rope, such as the car. This contamination must be cleaned by workers, which increases the burden of maintenance work on the workers.

[0005] An object of 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 is connected to a car of the elevator to raise and lower the car. The detection unit detects a physical quantity related to the scattering of oil from the rope. When the control unit detects the scattering of oil from the rope based on the detected physical quantity, it causes the oil supply unit to stop supplying the oil to the rope. [Brief description of the drawings]

[0007] [Figure 1] FIG. 1 is a diagram showing a schematic configuration of an elevator according to a first embodiment. [Diagram 2] FIG. 2 is a perspective view showing an oil supplying section in the rope oiling device of the first embodiment. [Diagram 3] FIG. 3 is a diagram showing a schematic configuration of an oil supplying section in the rope oiling device of the first embodiment, showing a state in which the oil supplying member is located at the oil supply position. [Figure 4] FIG. 4 is a diagram showing a schematic configuration of an oil supplying section in the rope oiling device of the first embodiment, showing a state in which the oil supplying member is located at the retracted position. [Diagram 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 an 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 of the second embodiment, and is a diagram showing 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 is stopped by the rope oiling device. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0008] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An elevator rope oiling device and an elevator rope oiling method according to embodiments will be described in detail below with reference to the accompanying drawings. Note that the present invention is not limited to the embodiments.

[0009] <First embodiment> Fig. 1 is a diagram showing a schematic configuration of an elevator 1 according to a first embodiment. In this figure, an elevator 1 having a machine room 8 is illustrated, but this embodiment is applicable regardless of the presence or absence of the machine room 8.

[0010] As shown in each drawing, for the sake of convenience, an X-axis, a Y-axis, and a Z-axis are defined in this specification. The X-axis, the Y-axis, and the Z-axis are mutually orthogonal. The X-axis and the Y-axis are orthogonal 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 in a vertical direction, 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 while Fig. 1 illustrates elevator 1 having one car 5, this embodiment is also applicable to elevator 1 having multiple cars 5.

[0012] The elevator 1 is a so-called bucket-type 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 at a different floor of the building. A door is provided at each landing. The elevator 1 moves the car 5 up and down in the hoistway 2 to move a user from a landing at a desired floor to a landing at a desired floor. When the car 5 lands at a landing, the user can get on and off the car 5 through a door provided at that landing. The elevator 1 moves the car 5 to a floor for which a call is registered, based on a call registration made by operating an operation panel in the car and a landing operation panel provided at the landing of each floor.

[0013] The elevator 1 further includes a machine room 8, a hoist 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 deflection sheave 10 so that the end of the rope 6 on the car 5 side hangs down toward the hoisting sheave 14 side. When the hoisting motor 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 deflection 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, an in-car operation panel (not shown) provided in the car 5, the rope oiling device 20, and landing operation panels (not shown) provided at each landing, etc., and provides overall control of the operation of the elevator 1.

[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 a 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 the car 5 is to stop.

[0017] The elevator control panel 13 includes, for example, a calculation device, a storage device, and a communication interface device. That is, the elevator control panel 13 has a configuration similar to that of a computer. The storage device is a device capable of holding data and programs. The storage device is configured with a ROM (Read Only Memory), a RAM (Random Access Memory), a flash memory, a HDD (Hard Disk Drive), an SSD (Solid State Drive), or a combination of these. The calculation device is, for example, a CPU (Central Processing Unit). The calculation device 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 a counterweight 7. The rope 6 is wound around a 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. The rope 6 with a wire rope core or a resin core is unlikely to contain grease. For this reason, in this embodiment, a rope oiling device 20 is provided to supply oil 100 to the rope 6. Note that the rope oiling device 20 may be provided even if the rope 6 has another configuration.

[0019] Rope oiling device 20 includes oil supplying unit 21, detection unit 22, and control unit 23. Oil supplying unit 21 supplies oil 100 to rope 6. Oil 100 is 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 supplying unit 21 to stop supplying oil 100 to rope 6.

[0020] Fig. 2 is a perspective view showing oil supplying unit 21 in rope oiling device 20 of the first embodiment. Fig. 3 is a diagram showing a schematic configuration of oil supplying unit 21 in rope oiling device 20 of the first embodiment, showing a state in which oil supplying member 31 is located at the oil supply position. Fig. 4 is a diagram showing a schematic configuration of oil supplying unit 21 in rope oiling device 20 of the first embodiment, showing a state in which oil supplying 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 a fixing member 24. The tank 30 stores oil 100. In detail, as shown in Fig. 3 and Fig. 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 or the like.

[0023] The oil supplying member 31 is made of, for example, felt and has flexibility. The oil supplying 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 to the first end 31a and is in contact with the rope 6. The oil supplying member 31 moves the oil 100 in the tank 30 to the rope 6. In detail, the oil supplying member 31 sucks up the oil 100 in the tank and moves it to the rope 6 by capillary action. Note that the oil supplying member 31 is not limited to the above.

[0024] The member moving mechanism 32 can move the oil supplying member 31 between an oil supplying position (FIG. 3) where the second end 31b of the oil supplying member 31 contacts the rope 6 and a retracted position (FIG. 4) where the second end 31b of the oil supplying member 31 is separated from the rope 6. The oil supplying member 31 positioned at the oil supplying position has the second end 31b in contact with the rope 6, and is therefore able to supply oil to the rope 6. On the other hand, the oil supplying member 31 positioned at the retracted position has the second end 31b separated from the rope 6, and is therefore unable to 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 conversion mechanism 34 has 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 opposing direction of the rope 6 and the oil supply member 31. The ball screw 36 is rotated by the motor 33. The nut member 37 is coupled (screwed) 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 nut member 37 is prevented from rotating around the ball screw 36 by the pair of guide members 38, and is supported 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 the 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. That is, only a part 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. In addition, the detection unit 22 is 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 an 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 storage unit 50 and a load cell 51. The load cell 51 is an example of a measurement unit. The oil storage unit 50 is also called an oil reservoir.

[0032] The oil reservoir 50 is installed around the hoisting sheave 14 in the machine room 8 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] In detail, as shown in FIG. 6, the oil reservoir 50 is formed in a box shape and has an opening 50g for receiving the 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 communicates with the inside 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 through the opening 15c of the sheave cover 15, and faces the first portion 6a. The opening 50g is 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. Moreover, the upper wall 50b is inclined with respect to the vertical direction so as to head upward as it approaches the rope 6 (the 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 storage section 50 in the machine room 8 and is fixed to the machine room 8. The oil storage section 50 is fixed to a measurement surface, which is the upper surface of the load cell 51. The load cell 51 measures the mass of the oil storage section 50 as a physical quantity related to the scattering of the oil 100 from the rope 6. The mass of the oil storage section 50 includes the mass of the oil storage section 50 itself and the mass of the oil stored in the oil storage section 50. Therefore, the mass of the oil storage section 50 increases as the amount of oil stored in the oil storage section 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.) related to the oil 100 in the oil storage section 50. In addition, a part of the wiring of the load cell 51 is provided along the wiring of the hoisting machine 9, for example. 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 the same configuration as a computer. The storage device is a device capable of holding data and programs. The storage device is configured by a ROM (Read Only Memory), a RAM (Random Access Memory), a flash memory, a HDD (Hard Disk Drive), an SSD (Solid State Drive), or a combination of these. 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 elevator control panel 13 and the rope oiling device 20 are connected to the control unit 23.

[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 the oil 100 from the rope 6 based on the detected mass of the oil storage unit 50, the control unit 23 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 value, the control unit 23 determines that the scattering of the oil 100 from the rope 6 has not been detected, and when the detected mass of the oil storage unit 50 exceeds the threshold value, the control unit 23 determines that the scattering of the oil 100 from the rope 6 has been detected. Therefore, when the detected mass of the oil storage unit 50 exceeds the threshold value, 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 in a state where 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 by the load cell 51 (S100).

[0043] Next, the control unit 23 determines whether or not 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 storage unit 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 is registered (S103). The control unit 23 acquires information indicating whether or not a call is registered from the elevator control panel 13, and determines whether or not a call is registered based on the information. When the control unit 23 determines that a call is registered (S103: Yes), it waits for the call registration to be cleared.

[0046] When the control unit 23 determines that the car 5 is stopped (S102: Yes) and that there is no call registration (S103: No), it issues an alert and moves the oil supplying member 31 to a retreat position (S104). The alert is, for example, the issuance (transmission) of oil scattering information to a monitoring device (not shown) of a monitoring center. The oil scattering information is information indicating that oil is scattering from the rope 6. The monitoring center is installed at a location different from the installation location of the elevator 1 and monitors the elevator 1. This alert allows an operator 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 supplying member 31 from the oil supplying position to a retreat position. As a result, the oil supplying member 31 moves away from the rope 6, and the supply of oil to the rope 6 by the oil supplying unit 21 stops.

[0047] Next, the control unit 23 determines whether the mass of the oil storage unit 50 has increased (S105). In other words, the control unit 23 determines whether the increase in the mass of the oil storage unit 50 is 0 or not. Specifically, the control unit 23 measures (detects) the mass of the oil storage unit 50 again by the load cell 51, and determines whether the mass of the oil storage unit 50 measured this time has increased compared to the mass of the oil storage unit 50 measured previously. The first measurement is the measurement in S100. The second and subsequent measurements are the 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 storage unit 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 is registered (S107). The control unit 23 acquires information indicating whether or not a call is registered from the elevator control panel 13, and determines whether or not a call is registered based on the information. When the control unit 23 determines that a call is registered (S107: Yes), it waits for the call registration to be cleared.

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

[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, a worker such as a maintenance worker removes oil from oil reservoir 50 and cleans oil reservoir 50 when inspecting elevator 1 for 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 rope 6 based on the detected physical quantity, the oil supply unit 21 stops the supply of the oil 100 to the rope 6, so that the oil 100 from the rope 6 can be prevented from contaminating the components of the elevator 1 around the rope 6, such as the car 5. Therefore, according to the above configuration, the labor of the worker (maintenance worker) in cleaning the oil 100 stains can be reduced, so that the burden of the maintenance work on the worker can be reduced. For example, according to the above configuration, the scattering of the oil 100 from the rope 6 is suppressed, so that the scattering oil 100 is prevented from leaking into the car 5 and from contaminating the hoistway 2 and the upper part of the car 5. Therefore, the number of times that the worker periodically cleans them can be reduced.

[0056] The oil supply unit 21 also 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 the oil 100 from the rope 6 based on the detected physical quantity, 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. 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 period of time.

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

[0059] According to 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 a plurality of 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 causes oil supply unit 21 to stop supplying oil 100 to rope 6 when it detects the scattering of oil 100 from rope 6 based on the detected physical quantity.

[0061] 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, so that it is possible to prevent the components of the elevator 1 around the ropes 6, such as the car 5, from being soiled by the oil 100 from the ropes 6. Therefore, according to the above configuration, the effort required for the worker (maintenance worker) to clean the oil 100 stains is reduced, and the maintenance work load on the worker can be reduced.

[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 together 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. Moreover, 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 supplying member 31 is immersed in the oil 100 in the first oil chamber 30aa. The second end 31b of the oil supplying member 31 contacts the rope 6. The oil supplying member 31 moves the oil 100 in the first oil chamber 30aa to the rope 6 by capillary action. In this embodiment, the oil supplying 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 rotated 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. Also, 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 the case where 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, it is possible to move the oil 100 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, the oil 100 is stored in the first oil chamber 30aa, and the oil supply member 31 supplies the oil 100 to the rope 6. When the control unit 23 detects the scattering of the 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, from this state, 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. Also, when the control unit 23 resumes supplying the oil 100 to the rope 6 from this state, 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 section 21 having the tank 30, the oil supply member 31, and the pump 62. The tank 30 includes the first oil chamber 30aa for storing the oil 100 and the second oil chamber 30ab separated from the first oil chamber 30aa. The oil supply member 31 has a first end 31a immersed in the oil 100 in the first oil chamber 30aa and a second end 31b in contact with 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 splashing 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 splashing 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, the elevator 1 is provided with the machine room 8, but the present invention is not limited thereto. For example, the rope oiling device 20 is also applicable to an elevator 1 that does not have a machine room 8. In an elevator 1 that does not have a machine room 8, for example, the hoisting machine 9 is provided at the upper part (near the ceiling) of the hoistway 2. The oil supply unit 21 and the detection unit 22 of the rope oiling device 20 may be disposed in the vicinity of the hoisting sheave 14. In this case, the oil supply unit 21 and the detection unit 22 of the rope oiling device 20 may be disposed on a machine bed to which the hoisting machine 9 is fixed.

[0075] Although some 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 implemented 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 in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described 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 section, 22...detection section, 23...control section, 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 section, 51...load cell (measuring section), 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 scattering of the oil 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 capable of moving the oil supplying member between an oil supplying position where the second end portion is in contact with the rope and a retracted position where the second end portion is separated from the rope; having When the control unit detects the splashing 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 supplying member having a first end immersed in the oil in the first oil chamber and a second end contacting the rope, the oil in the first oil chamber being moved to the rope; a pump that moves the oil in the first oil chamber to the second oil chamber; having 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 is 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 been scattered from the rope; A measuring unit that measures a mass of the oil reservoir as the physical quantity; having An elevator rope oiling device according to any one of claims 1 to 3.

5. a step of supplying oil to a rope that is wound around a sheave of an elevator and is connected to a car of the elevator, the rope raising and lowering the car, by an oil supply unit; A step of detecting a physical quantity related to the splash of the oil from the rope by a detection unit; When the control unit detects the oil splashing from the rope based on the detected physical quantity, the control unit stops the supply of the oil to the rope. The elevator rope oiling method includes:

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