JP7706264B2 - Compensation rope oil supply device - Google Patents

Description

The present invention relates to a compensating rope oiling device that supplies lubricating oil to the compensating rope of an elevator.

An elevator is a device that raises and lowers people or luggage in a car. The car is connected to a counterweight by a main rope. An elevator compensating rope is a rope that reduces the imbalance in weight of the main rope that occurs between the car side and the counterweight side when the car rises and falls. The compensating rope connects the lower part of the car and the lower part of the counterweight (for example, Patent Document 1).

The compensating rope is wound around the compensating sheave in a pit located below the hoistway. The compensating rope runs while in contact with the compensating sheave. For this reason, the compensating rope needs to be lubricated periodically. When lubricating the compensating rope during maintenance and inspection work, the lubricating oil is supplied from an oil dispenser installed on the compensating sheave cover that covers the compensating sheave.

JP 2018-184252 A

However, in elevators installed in high-rise buildings, because the length of the compensating rope is long, it was necessary to repeatedly add lubricating oil to the oil dispenser when refilling the oil. This meant that workers had to repeatedly go up and down between the compensating cover and the pit floor using a stepladder while holding a lubricating oil can. As such, in the past, the workability of compensating rope refilling work was poor, especially in elevators installed in high-rise buildings.

The object of the present invention is to provide a compensating rope oiling device that eliminates the need for an operator to climb onto the compensating cover to add lubricating oil during compensating rope oiling operations.

The compensating rope oiling device of the present invention is characterized by comprising a tank for storing lubricating oil, a discharge part provided on a compensating cover that covers a compensating sheave around which the compensating rope is wound, for discharging lubricating oil onto the compensating rope, and a pump for pumping the lubricating oil stored in the tank to the discharge part.

In the compensating rope oiling device according to the present invention, it is preferable to further include a detection unit that detects the travel of the compensating rope, and to pump lubricating oil by the pump when the travel of the compensating rope is detected by the detection unit.

In the compensating rope oiling device according to the present invention, it is preferable that there are multiple compensating ropes, and the discharge section has multiple nozzles that discharge lubricating oil toward each compensating rope, and a distributor that accumulates the lubricating oil and distributes it to the multiple nozzles.

The compensating rope oiling device of the present invention eliminates the need for workers to climb onto the compensating cover to add lubricating oil. This improves the ease of oiling the compensating rope.

FIG. 1 is a schematic diagram showing an elevator according to an embodiment. FIG. 1 is a side view showing a compensating rope oiling device according to an embodiment. FIG. 1 is a plan view showing a compensating rope oiling device according to an embodiment.

An example of an embodiment of the present invention will be described in detail below. In the following description, the specific shapes, materials, directions, values, etc. are examples to facilitate understanding of the present invention, and can be changed as appropriate according to the application, purpose, specifications, etc.

The elevator 80 according to the embodiment will be described with reference to Figure 1. Figure 1 is a schematic diagram showing the elevator 80.

As shown in FIG. 1, the elevator 80 is installed in a hoistway 81 formed in a building. The elevator 80 includes a car 82 that carries people or baggage and moves up and down the hoistway 81, a counterweight 83 for balancing the weight of the car 82, a main rope 84 that connects the car 82 and the counterweight 83, and a hoist 85 that raises and lowers the car 82.

The car 82 is supported by a bracket 86. One end of a main rope 84 is connected to the top of the bracket 86. Meanwhile, the other end of the main rope 84 is connected to the top of the counterweight 83. In this way, the car 82 is connected to the counterweight 83 via the main rope 84.

The hoist 85 is disposed in a machine room 87 provided at the top of the hoistway 81, and raises and lowers the car 82 by driving a drive sheave around which the main rope 84 is wound. In addition, a deflector wheel 88 around which the main rope 84 is wound is provided near the hoist 85.

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

In the elevator 80, when the moving distance of the car 82 and counterweight 83 in the ascending and descending direction 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 in weight between the car 82 side of the main rope 84 starting from the hoist 85 and the counterweight 83 side of the main rope 84 starting from the hoist 85 becomes large.

To solve the above-mentioned problems, the elevator 80 is provided with a compensating rope 90 to reduce the difference in weight between the car 82 side of the main rope 84 and the counterweight 83 side. The compensating rope 90 is connected to connect the lower part of the car 82 and the lower part of the counterweight 83.

The compensating rope 90 according to the embodiment will be described with reference to Figures 1 to 3. Figure 2 is a side view showing the compensating rope 90 wound around a compensating sieve 91. Figure 3 is a plan view showing a compensating sieve cover 92.

As shown in Figures 1 to 3, the elevator 80 further includes a plurality of compensating ropes 90 (six in this example), a compensating sheave 91 around which the compensating ropes 90 are wound, a compensating sheave cover 92 that rotatably supports the compensating sheave 91 and covers the compensating sheave 91, and a compensating rail 93 that supports the compensating sheave cover 92 so that it can move up and down.

The compensator 91, compensator cover 92 and compensator rail 93 are installed in a pit 95 provided at the bottom of the elevator shaft 81.

In the following, as shown in Figures 2 and 3, the vertical direction and the direction in which the multiple compensating ropes 90 are lined up, which are perpendicular to the vertical direction, are defined as the width direction, and the radial direction of the compensating sheath 91, which is perpendicular to the vertical direction and the width direction, is defined as the depth direction.

As described above, the compensating rope 90 reduces the difference in weight between the car 82 and the counterweight 83, which is caused by the difference in length of the main rope 84. One end of the compensating rope 90 is connected to the lower part of the bracket 86 that supports the car 82. The other end of the compensating rope 90 is connected to the lower part of the counterweight 83.

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

The compensator rail 93 stands upright on the floor of the pit 95. On the compensator rail 93, the tension of the compensator rope 90 is adjusted by moving the compensator cover 92 up and down.

The compensating rope 90 travels in contact with the compensating sheave 91, so it needs to be lubricated periodically. When lubricating the compensating rope 90 during maintenance and inspection work, the lubricating device 10, the details of which will be described later, is used.

The fuel supply device 10, which is an example of an embodiment, will be described with reference to Figures 2 and 3. Figure 2 is a side view showing the fuel supply device 10. Figure 3 is a plan view showing the compensator 92 side of the fuel supply device 10.

As described above, the oil supply device 10 is a device that supplies lubricating oil to the compensating rope 90 of the elevator 80. With the oil supply device 10, the worker does not need to climb onto the compensating cover 92 to add lubricating oil. This improves the ease of oiling the compensating rope 90.

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

The tank 20 is a container for storing lubricating oil as described above, and is placed on the floor of the pit 95. It is preferable that the level of the stored lubricating oil in the tank 20 can be seen from the outside, and it is preferable that the tank 20 is graduated so that the remaining amount of stored lubricating oil can be confirmed from the level of the stored lubricating oil. The capacity of the tank 20 is an amount that can store enough lubricating oil to lubricate six compensating ropes 90 in one refueling operation.

The discharge unit 30 is placed on the upper surface of the compensating cover 92 and discharges lubricating oil to the compensating rope 90 passing through one of the openings 92A. The discharge unit 30 has multiple nozzles 31 (six in this example) that discharge lubricating oil toward each compensating rope 90, a distributor 32 that pressurizes the lubricating oil and distributes the lubricating oil to the multiple nozzles 31, a base plate 33 to which the distributor 32 is fixed, a distribution pipe 34 that connects the nozzles 31 and the distributor 32, and a connection pipe 35 that connects the pump 40 and the distributor 32.

The nozzle 31 ejects lubricating oil toward the compensating rope 90 as described above. The nozzle 31 is positioned on the edge of one of the openings 92A so that the tip of the nozzle 31 is adjacent to each of the compensating ropes 90 passing through the opening 92A.

The nozzle 31 is configured so that the discharge amount can be adjusted by adjusting the throttling amount. The nozzle 31 is also configured so that the discharge amount can be set to zero by fully closing the throttling amount. This allows lubricating oil to be discharged from only the required number of nozzles 31 according to the number of compensating ropes 90 that require oiling.

The distributor 32 is a container formed in a long shape along the width direction, and accumulates and equalizes the pressure of the lubricating oil pumped from the pump 40 before distributing it to each distribution pipe 34.

The distributor 32 is fixed to the base plate 33, which is placed on the upper surface of the compensating cover 92. The base plate 33 is attached to the upper surface of the steel compensating cover 92 by a magnet 36. The magnet 36 may be a removable magnet. A removable magnet is a magnet that has a mechanism that allows the magnet 36 to be moved, for example, by operating a lever, and can be switched between a state where it is attached to the compensating cover 92 and a state where it is released from the attachment to the compensating cover 92.

The distribution pipe 34 is a flexible pipe, and the position of the nozzle 31 can be adjusted. The connection pipe 35 is a flexible pipe, and the position of the distributor 32 can be adjusted.

The discharge unit 30 can be removed from the compensating cover 92 by releasing the attraction of the magnet 36, except during maintenance and inspection. The discharge unit 30 can also adjust the position of the base plate 33 on the upper surface of the compensating cover 92 by releasing the attraction of the magnet 36, and can fine-tune the position of each nozzle 31 by adjusting the bend of each distribution pipe 34.

As described above, the pump 40 pumps the lubricating oil stored in the tank 20 to the discharge section 30. In this example, the pump 40 is placed on top of the tank 20, but it may also be placed on the floor of the pit 95.

The detection unit 50 detects the travel of the compensating rope 90 as described above. The detection unit 50 is placed on the upper surface of the compensating cover 92, facing the nozzle 31 with the compensating rope 90 in between. The detection unit 50 may be configured to magnetize the compensating rope 90 and detect a change in magnetic flux caused by the travel of the magnetized compensating rope 90. The detection unit 50 may also be configured to detect the rotation of the compensating rope 91.

The controller 60 is connected to the pump 40 and the detector 50, and controls the operation or stopping of the pump 40. In this example, the controller 60 is placed on top of the tank 20 together with the pump 40, but it may also be placed on the floor of the pit 95 together with the pump 40.

The controller 60 has an operation refueling switch 61 that switches the operation refueling mode ON or OFF, and a forced refueling switch 62 that switches the forced operation mode ON or OFF. In the operation refueling mode, the pump 40 is operated only when the detection unit 50 detects that the compensating rope 90 is traveling. In other words, in the operation refueling mode, the operation of the pump 40 is synchronized with the traveling of the compensating rope 90. The forced refueling switch 62 operates the pump 40 at all times. Note that when both the operation refueling switch 61 and the forced refueling switch 62 are ON, the operation refueling mode takes priority.

The following describes the oiling operation of the compensating rope 90 using the oiling device 10 described above.

First, the worker places the tank 20 on the floor of the pit 95, and then places the pump 40 and the controller 60 on the tank 20. The pump 40 and the controller 60 may also be placed on the floor of the pit 95.

Then, the worker places the discharge section 30 on the compensating cover 92 and adjusts the position of the base plate 33 so that each nozzle 31 approaches its corresponding compensating rope 90. The worker also adjusts the bend of each distribution pipe 34 to bring each nozzle 31 close to its corresponding compensating rope 90.

Next, the worker fills the tank 20 with lubricating oil. As described above, since the tank 20 is placed on the floor of the pit 95, the worker can easily fill the tank 20 with oil. Then, the forced oil supply switch 62 of the controller 60 is turned ON, and the amount of throttling of the nozzle 31 is adjusted to adjust the appropriate amount of lubricating oil discharged. The appropriate amount of lubricating oil discharged is determined by the worker's judgment based on the air temperature during work, the rope diameter of the compensating rope 90, and the oil depletion state of the compensating rope 90.

Next, the worker turns ON the operation refueling switch 61 of the controller 60 and operates the elevator 80 back and forth at low speed. At this time, the oil supply device 10 supplies lubricating oil to the compensating rope 90 in synchronization with the travel of the compensating rope 90. When oil supply is complete, the discharge part 30 on the compensating cover 92 is removed, and the oil supply device 10 is removed from the pit 95.

The present invention is not limited to the above-described embodiment and its variations, and various modifications and improvements are possible within the scope of the claims of this application.

For example, in this example, the lubricating oil is discharged onto the compensating rope 90 by the nozzle 31 of the oil supply device 10, but even if the lubricating oil is discharged into the groove of the compensating sheave 91, the lubricating oil can still be supplied to the compensating rope 90.

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

Claims (3)

A compensating rope oiling device for supplying lubricating oil to an elevator compensating rope,
A tank for storing the lubricating oil;
a discharge portion provided in a compensator cover that covers a compensator around which the compensating rope is wound, the discharge portion discharging the lubricating oil to the compensating rope;
a pump that pumps the lubricating oil stored in the tank to the discharge portion;
Equipped with
Compensation rope oiling device. 2. The compensating rope oiling device according to claim 1,
A detection unit that detects the travel of the compensating rope is further provided,
When the detection unit detects the traveling of the compensating rope, the lubricating oil is pumped by the pump.
Compensation rope oiling device. The compensating rope oiling device according to claim 1 or 2,
The compensating rope is a plurality of ropes,
The discharge unit has a plurality of nozzles that discharge the lubricating oil toward each of the compensating ropes, and a distributor that accumulates the lubricating oil and distributes the lubricating oil to the plurality of nozzles.
Compensation rope oiling device.

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