Compensating rope lubricating device

Abstract

To provide a compensation-rope oil feed device that eliminates the need for an operator to climb up on a compensation sheave cover in order to add lubricating oil in a compensation-rope oil feed operation.SOLUTION: An oil feed device 10 that feeds lubricating oil to a compensation rope 90 of an elevator 80 includes: a tank 20 for storing the lubricating oil; a discharge unit 30 that is provided on a compensation sheave cover 92 covering a compensation sheave 91 around which the compensation rope 90 is wound, and that discharges the lubricating oil to the compensation rope 90; and a pump 40 that pumps the lubricating oil, stored in the tank 20, to the discharge unit 30.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to a compensating rope lubricating device for supplying lubricating oil to a compensating rope of an elevator.

Background Art

[0002] An elevator is a device for lifting a car with a person or a load on it. The car is connected to a counterweight by a main rope. The compensating rope of an elevator is a rope that reduces the imbalance in the weight of the main rope caused between the car side and the counterweight side due to the ascending and descending of the car. The compensating rope connects the lower part of the car and the lower part of the counterweight (for example, Patent Document 1).

[0003] The compensating rope is wound around a compensator in a pit provided below the hoistway. The compensating rope runs while contacting the compensator. Therefore, it is necessary to regularly supply lubricating oil to the compensating rope. When supplying lubricating oil to the compensating rope during maintenance inspection work, it is supplied by an oil feeder provided on a compensator cover covering the compensator.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0005] However, in the elevator installed in a high-rise building, since the rope length of the compensating rope is long, it is necessary to repeatedly add lubricating oil to the oil feeder when refueling the lubricating oil. Therefore, the operator has to repeatedly raise and lower the compensator cover and the pit floor using a stepladder while holding the lubricating oil can. Thus, conventionally, especially in the elevator installed in a high-rise building, the workability of the compensating rope refueling work was poor.

[0006] An object of the present invention is to provide a compensating rope oiling device in which an operator does not need to climb onto the compensator cover to add lubricating oil during the compensating rope oiling operation.

Means for Solving the Problems

[0007] The compensating rope oiling device according to the present invention is provided on a compensator cover that covers a compensator around which a compensating rope is wound, and includes a tank for storing lubricating oil, a discharge part for discharging the lubricating oil onto the compensating rope, and a pump for pumping the lubricating oil stored in the tank to the discharge part.

[0008] In the compensating rope oiling device according to the present invention, it is further provided with a detection part for detecting the running of the compensating rope, and it is preferable that when the running of the compensating rope is detected by the detection part, the pump pumps the lubricating oil.

[0009] In the compensating rope oiling device according to the present invention, when there are a plurality of compensating ropes, the discharge part preferably has a plurality of nozzles for discharging the lubricating oil toward each compensating rope, and a distributor for accumulating the lubricating oil and distributing the lubricating oil to the plurality of nozzles.

Effects of the Invention

[0010] According to the compensating rope oiling device of the present invention, an operator does not need to climb onto the compensator cover to add lubricating oil. Thereby, the workability of the compensating rope oiling work can be improved.

Brief Description of the Drawings

[0011]

Figure 1

Figure 2

Figure 3

Embodiments for Carrying Out the Invention

[0012] Hereinafter, an example of an embodiment of the present invention will be described in detail. In the following description, specific shapes, materials, directions, numerical values, etc. are examples for facilitating the understanding of the present invention, and can be appropriately changed according to applications, purposes, specifications, etc.

[0013] The elevator 80 according to the embodiment will be described with reference to FIG. 1. FIG. 1 is a schematic diagram showing the elevator 80.

[0014] As shown in FIG. 1, the elevator 80 is provided in a hoistway 81 formed in a building. The elevator 80 includes a car 82 for carrying people or goods and moving up and down in the hoistway 81, a counterweight 83 for balancing the weight of the car 82, a main rope 84 connecting the car 82 and the counterweight 83, and a hoisting machine 85 for raising and lowering the car 82.

[0015] The car 82 is supported by a bracket 86. One end of the main rope 84 is connected to the upper part of the bracket 86. On the other hand, the other end of the main rope 84 is connected to the upper part of the counterweight 83. Thereby, the car 82 is connected to the counterweight 83 via the main rope 84.

[0016] The hoist 85 is disposed in the machine room 87 provided at the upper part of the hoistway 81, and raises and lowers the car 82 by driving a drive sheave around which the main rope 84 is wound. Further, a deflecting sheave 88 around which the main rope 84 is wound is provided in the vicinity of the hoist 85.

[0017] In the elevator 80, when the hoist 85 is driven, the car 82 moves up and down in the hoistway 81 along the car side guide rail (not shown), and the counterweight 83 moves up and down in the hoistway 81 along the counterweight side guide rail (not shown).

[0018] In the elevator 80, when the moving distance in the elevating direction of the car 82 and the counterweight 83 becomes long, the length of the main rope 84 from the hoist 85 to the car 82 changes depending on the position of the car 82. As a result, due to the weight of the main rope 84 itself, the difference between the weight on the car 82 side starting from the hoist 85 in the main rope 84 and the weight on the counterweight 83 side starting from the hoist 85 becomes large.

[0019] In order to solve the above-described problems, in the elevator 80, a compensating rope 90 is provided to reduce the difference between the weight on the car 82 side and the weight on the counterweight 83 side in the main rope 84. The compensating rope 90 is connected so as to connect the lower part of the car 82 and the lower part of the counterweight 83.

[0020] The compensating rope 90 according to the embodiment will be described with reference to FIGS. 1 to 3. FIG. 2 is a side view showing the compensating rope 90 wound around the compensating sheave 91. FIG. 3 is a plan view showing the compensating sheave cover 92.

[0021] As shown in FIGS. 1 to 3, the elevator 80 further includes a plurality (six in this example) of compensating ropes 90, a compensator 91 around which the compensating ropes 90 are wound, a compensator cover 92 that rotatably supports the compensator 91 and covers the compensator 91, and a compensator rail 93 that supports the compensator cover 92 so as to be movable in the vertical direction.

[0022] The compensator 91, the compensator cover 92, and the compensator rail 93 are provided in a pit 95 provided at the lower part of the hoistway 81.

[0023] Hereinafter, as shown in FIGS. 2 and 3, the vertical direction, the direction in which a plurality of compensating ropes 90 are arranged perpendicular to the vertical direction is defined as the width direction, and the radial direction of the compensator 91 perpendicular to the vertical direction and the width direction is defined as the depth direction for explanation.

[0024] The compensating ropes 90 reduce the difference between the weight on the car 82 side and the weight on the counterweight 83 side due to the difference in the length of the main rope 84 as described above. One end of the compensating rope 90 is connected to the lower part of a bracket 86 that supports the car 82. Also, the other end of the compensating rope 90 is connected to the lower part of the counterweight 83.

[0025] The compensator cover 92 is formed in a box shape that rotatably supports the compensator 91 and covers the compensator 91 as described above. An opening 92A for the compensating rope 90 to pass through is formed on the upper surface of the compensator cover 92. The opening 92A is provided at both ends in the depth direction and is formed in a long hole shape along the width direction.

[0026] The compensator rail 93 stands upright from the floor surface of the pit 95. In the compensator rail 93, the tension of the compensating rope 90 is adjusted by the vertical movement of the compensator cover 92.

[0027] Since the compensating rope 90 runs while contacting the compensator 91, it is necessary to supply lubricating oil regularly. When supplying lubricating oil to the compensating rope 90 during maintenance inspection work, the oil supply is carried out using an oil supply device 10 described in detail later.

[0028] With reference to FIGS. 2 and 3, an oil supply device 10 which is an example of an embodiment will be described. FIG. 2 is a side view showing the oil supply device 10. FIG. 3 is a plan view showing the compensator 92 side of the oil supply device 10.

[0029] The oil supply device 10 is a device for supplying lubricating oil to the compensating rope 90 of the elevator 80 as described above. According to the oil supply device 10, an operator does not need to climb onto the compensator cover 92 to replenish the lubricating oil. Thereby, the oil supply workability of the compensating rope 90 can be improved.

[0030] The oil supply device 10 includes a tank 20 for storing lubricating oil, a discharge part 30 provided on the compensator cover 92 for discharging lubricating oil to the compensating rope 90, a pump 40 for pumping the lubricating oil stored in the tank 20 to the discharge part 30, a detection part 50 for detecting the running of the compensating rope 90, and a controller 60 for controlling the operation or stop of the pump 40.

[0031] The tank 20 is a container for storing lubricating oil as described above, and is placed on the floor surface of the pit 95. The tank 20 preferably allows the liquid level of the stored lubricating oil to be visually recognized from the outside, and preferably has a scale so that the remaining storage amount can be confirmed from the liquid level of the stored lubricating oil. The capacity of the tank 20 is set to an amount that can sufficiently store the amount of lubricating oil for supplying six compensating ropes 90 in one oil supply operation.

[0032] The discharge unit 30 is placed on the upper surface of the compensating cover 92 and discharges lubricating oil to the compensating ropes 90 passing through one of the openings 92A. The discharge unit 30 includes a plurality (six in this example) of nozzles 31 that discharge lubricating oil toward the respective compensating ropes 90, a dispenser 32 that accumulates the lubricating oil and distributes the lubricating oil to the plurality of nozzles 31, a base plate 33 to which the dispenser 32 is fixedly attached, a distribution pipe 34 that connects the nozzles 31 and the dispenser 32, and a connection pipe 35 that connects the pump 40 and the dispenser 32.

[0033] As described above, the nozzles 31 discharge lubricating oil toward the compensating ropes 90. The nozzles 31 are arranged at the edge of one of the openings 92A and are arranged such that the tip ends of the nozzles 31 are close to the respective compensating ropes 90 passing through the opening 92A.

[0034] The nozzles 31 are configured such that the discharge amount can be adjusted by adjusting the throttle amount. Further, the nozzles 31 are configured such that the discharge amount can be set to 0 by fully closing the throttle amount. Thereby, lubricating oil can be discharged only from the necessary number of nozzles 31 according to the number of compensating ropes 90 that require oil supply.

[0035] The dispenser 32 is a container formed in a long shape along the width direction, accumulates the lubricating oil pumped from the pump 40, equalizes the pressure, and distributes the lubricating oil to the respective distribution pipes 34.

[0036] The base plate 33 has the dispenser 32 fixed thereto and is placed on the upper surface of the compensating cover 92. The base plate 33 is attracted to the upper surface of the steel compensating cover 92 by a magnet 36. The magnet 36 may be a detachable magnet. The detachable magnet is a magnet having a mechanism that enables the movement of the magnet 36, for example, by a lever operation, and can switch between a state of being attracted to the compensating cover 92 and a state in which the attraction to the compensating cover 92 is released.

[0037] The distribution pipe 34 is a flexible pipe and can adjust the position of the nozzle 31. The connection pipe 35 is a flexible pipe and can adjust the position of the distributor 32.

[0038] According to the discharge unit 30, it can be removed from the compensative cover 92 by releasing the adsorption of the magnet 36 except during maintenance and inspection. Also, according to the discharge unit 30, the adsorption of the magnet 36 can be released to adjust the position on the upper surface of the compensative cover 92 of the base plate 33, and the bending of each distribution pipe 34 can be adjusted to finely adjust the position of each nozzle 31.

[0039] The pump 40 pumps the lubricating oil stored in the tank 20 to the discharge unit 30 as described above. In this example, the pump 40 is placed on the upper part of the tank 20, but it may also be placed on the floor surface of the pit 95.

[0040] The detection unit 50 detects the running of the compensating rope 90 as described above. The detection unit 50 is placed on the upper surface of the compensative cover 92, facing the nozzle 31 with the compensating rope 90 sandwiched therebetween. The detection unit 50 may be configured to magnetize the compensating rope 90 and detect the change in magnetic flux due to the running of the magnetized compensating rope 90. Also, the detection unit 50 may be configured to detect the rotation of the compensator 91.

[0041] The controller 60 is connected to the pump 40 and the detection unit 50 and controls the operation or stop of the pump 40. In this example, the controller 60 is placed on the upper part of the tank 20 together with the pump 40, but it may also be placed on the floor surface of the pit 95 together with the pump 40.

[0042] The controller 60 has an operation fuel supply switch 61 for switching ON or OFF the operation fuel supply mode, and a forced fuel supply switch 62 for switching ON or OFF the forced operation mode. The operation fuel supply mode operates the pump 40 only when the traveling of the compensating rope 90 is detected by the detection unit 50. In other words, in the operation fuel supply mode, the operation of the pump 40 is synchronized with the traveling of the compensating rope 90. The forced fuel supply switch 62 always operates the pump 40. When both the operation fuel supply switch 61 and the forced fuel supply switch 62 are ON, the operation fuel supply mode is prioritized.

[0043] Hereinafter, the fuel supply operation of the compensating rope 90 using the fuel supply device 10 described above will be described.

[0044] First, the operator places the tank 20 on the floor of the pit 95, and places the pump 40 and the controller 60 on the tank 20. Note that the pump 40 and the controller 60 may be placed on the floor of the pit 95.

[0045] Next, the operator places the discharge unit 30 on the compensator cover 92, and adjusts the position of the base plate 33 so that each nozzle 31 approaches each corresponding compensating rope 90. Also, the bending of each distribution pipe 34 is adjusted to bring each nozzle 31 close to each corresponding compensating rope 90.

[0046] Next, the operator supplies lubricating oil to the tank 20. Since the tank 20 is placed on the floor of the pit 95 as described above, the fuel supply operation to the tank 20 can be easily performed. Then, the forced fuel supply switch 62 of the controller 60 is turned ON, and the throttle amount of the nozzle 31 is adjusted to adjust the appropriate discharge amount of the lubricating oil. The appropriate discharge amount of the lubricating oil is determined by the operator's judgment based on the temperature during operation, the rope diameter of the compensating rope 90, and the oil depletion state of the compensating rope 90.

[0047] Next, the operator turns on the operation fuel supply switch 61 of the controller 60 and operates the elevator 80 for one round trip at a low speed. At this time, lubricating oil is supplied to the compensating rope 90 by the fuel supply device 10 in synchronization with the running of the compensating rope 90. When the fuel supply is completed, the discharge part 30 on the compensator cover 92 is removed, and the fuel supply device 10 is removed from the pit 95.

[0048] Note that the present invention is not limited to the above-described embodiments and their modifications, and it goes without saying that various changes and improvements can be made within the scope of the matters described in the claims of the present application.

[0049] For example, in this example, the lubricating oil is discharged to the compensating rope 90 by the nozzle 31 of the fuel supply device 10. However, even if the lubricating oil is discharged to the groove portion of the compensator 91, the lubricating oil can be supplied to the compensating rope 90 as a result.

Explanation of Reference Numerals

[0050] 10 Fuel supply device, 20 Tank, 30 Discharge part, 31 Nozzle, 32 Distributor, 33 Base plate, 34 Distribution pipe, 35 Connection pipe, 36 Magnet, 40 Pump, 50 Detection part, 60 Controller, 61 Operation fuel supply switch, 62 Forced fuel supply switch, 80 Elevator, 81 Hoistway, 82 Car, 83 Counterweight, 84 Main rope, 85 Hoisting machine, 86 Bracket, 87 Machine room, 88 Deflection pulley, 90 Compensating rope, 91 Compensator, 92 Compensator cover, 92A Opening, 93 Compensating rail, 95 Pit

Claims

1. A compensating rope lubricating device for supplying lubricating oil to a compensating rope of an elevator, a tank for storing the lubricating oil, a discharge part provided on a compensating sheave cover covering a compensating sheave around which the compensating rope is wound, for discharging the lubricating oil to the compensating rope, a pump for pumping the lubricating oil stored in the tank to the discharge part, comprising: a compensating rope lubricating device.

2. The compensating rope lubricating device according to claim 1, further comprising a detection part for detecting the running of the compensating rope, wherein when the running of the compensating rope is detected by the detection part, the pump pumps the lubricating oil. A compensating rope lubricating device.

3. The compensating rope lubricating device according to claim 1 or 2, wherein there are a plurality of the compensating ropes, the discharge part has a plurality of nozzles for discharging the lubricating oil toward respective compensating ropes, and a distributor for accumulating the lubricating oil and distributing the lubricating oil to the plurality of nozzles. A compensating rope lubricating device.

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