Elevator system

Abstract

To provide an elevator device capable of reducing labor for maintenance.SOLUTION: An elevator device 1 includes a car 2, a counterweight 3, a guide rail 21, an oil supply device 28, and a heating device 31. The oil supply device 28 includes a tank 29 and a supply member 30. The warming device 31 includes a heater 32 for warming the lubricating oil stored in the tank 29. The heater 32 is disposed so as to face the tank 29 from the side when the car 2 is disposed in a preset first position.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to elevator systems. [Background technology]

[0002] Patent Document 1 describes a lubrication device for an elevator. The lubrication device described in Patent Document 1 includes a tank and a heating unit. Lubricating oil is stored in the tank. The heating unit is disposed inside the tank and heats the lubricating oil stored in the tank. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2020-147395 Summary of the Invention [Problem to be solved by the invention]

[0004] In the fuel supply device described in Patent Document 1, the heating unit is disposed inside the tank, which causes the heating unit to become covered in oil, resulting in a problem of increased maintenance work.

[0005] The present disclosure has been made to solve the above-mentioned problems, and an object of the present disclosure is to provide an elevator apparatus that can reduce the maintenance work. [Means for solving the problem]

[0006] The elevator system according to the present disclosure includes a car and a counterweight that move in a hoistway, a guide rail provided in the hoistway for guiding the movement of the counterweight, an oil supply device provided on the counterweight, and a heating device. The oil supply device includes a tank that stores lubricating oil and a supply member that supplies the lubricating oil stored in the tank to the guide rail. The heating device includes a heater that heats the lubricating oil stored in the tank. The heater is provided on the guide rail or a member that supports the guide rail, and is positioned so as to face the tank from the side when the car is located in a predetermined first position.

[0007] An elevator system according to the present disclosure includes a car that moves in a hoistway, a guide rail provided in the hoistway for guiding the movement of the car, a lubrication device provided on the car, and a heating device. The lubrication device includes a tank that stores lubricating oil and a supply member that supplies the lubricating oil stored in the tank to the guide rail. The heating device includes a heater that heats the lubricating oil stored in the tank. The heater is provided on the car or the lubrication device and is positioned opposite the tank from the side. [Effects of the Invention]

[0008] An elevator device according to the present disclosure can reduce the amount of maintenance work required. [Brief explanation of the drawings]

[0009] [Figure 1] 1 is a diagram illustrating an example of an elevator device according to a first embodiment. [Figure 2] FIG. 2 is a cross-sectional view of FIG. 1 taken along line AA. [Figure 3] FIG. 2 is a cross-sectional view of FIG. 1 taken along line BB. [Figure 4] 1. FIG. 4 is a diagram showing another example of the cross section BB of FIG. [Figure 5] 1. FIG. 4 is a diagram showing another example of the cross section BB of FIG. DETAILED DESCRIPTION OF THE INVENTION

[0010] The following detailed description will be given with reference to the drawings. Duplicate descriptions will be simplified or omitted as appropriate. In each drawing, the same reference numerals indicate the same or corresponding parts.

[0011] Embodiment 1 FIG. 1 is a diagram showing an example of an elevator system 1 according to a first embodiment. The elevator system 1 includes a car 2 and a counterweight 3. The car 2 and the counterweight 3 move up and down in a hoistway 4. The hoistway 4 is a space extending up and down in a building. The car 2 and the counterweight 3 are suspended in the hoistway 4 by a rope 5. FIG. 1 shows an example of an elevator system 1 using a 1:1 roping system.

[0012] The rope 5 is wound around a drive sheave of the hoisting machine 6. The hoisting machine 6 is controlled by a control device 7. When the drive sheave of the hoisting machine 6 rotates, the rope 5 moves in a direction corresponding to the direction in which the drive sheave rotates. The car 2 moves up or down the hoistway 4 depending on the direction in which the rope 5 moves. The counterweight 3 moves in the hoistway 4 in the direction opposite to the direction in which the car 2 moves.

[0013] The elevator device 1 includes a guide rail 8. The guide rail 8 is a rail for guiding the movement of the car 2. The guide rail 8 is provided in the hoistway 4 so as to extend vertically. The guide rail 8 is arranged over the range in which the car 2 moves. FIG. 1 shows an example in which the guide rail 8 includes a pair of rails 9 and 10. The car 2 is arranged between the rails 9 and 10, and its horizontal displacement is restrained by the rails 9 and 10.

[0014] Fig. 2 is a view showing a cross section taken along the line AA in Fig. 1. The configuration on the rail 9 side will be described below. The configuration on the rail 10 side is the same as the configuration on the rail 9 side.

[0015] As shown in Fig. 2, the guide rail 8 includes a base portion 8a and a guide portion 8b. The base portion 8a is fixed to a bracket 11 using a clip and a bolt (neither of which are shown). The bracket 11 is an example of a member that supports the guide rail 8. The bracket 11 is provided on a fixed body of the elevator shaft 4. The guide portion 8b protrudes from the base portion 8a. A guide surface 8c for guiding the movement of the car 2 is formed on the guide portion 8b.

[0016] The car 2 comprises a car chamber 12, a car frame 13, and a guide unit 14. The car chamber 12 forms a space for passengers to board. The car frame 13 has a rectangular ring shape overall, and is arranged to surround the car chamber 12 from above, below, left, and right. The car chamber 12 is supported by the car frame 13. The guide unit 14 is provided on the car frame 13. The guide unit 14 is a device for guiding the movement of the car 2 together with the guide rail 8. Figure 1 shows an example in which the guide units 14 are provided at four locations on the car frame 13, above, below, left, and right. The guide unit 14 is arranged to face the guide surface 8c of the guide rail 8. As an example, the guide unit 14 comprises a shoe that slides on the guide surface 8c.

[0017] The elevator apparatus 1 further includes an oil supply device 15. The oil supply device 15 is a device for supplying lubricating oil to the guide rails 8. The oil supply device 15 is provided on the car 2. FIG. 1 shows an example in which the oil supply devices 15 are respectively arranged on the upper left guide unit 14 and the upper right guide unit 14. As an example, the oil supply device 15 is provided on the guide unit 14. The oil supply device 15 may also be provided on the car frame 13.

[0018] The oil supply device 15 includes a tank 16 and a supply member 17. The tank 16 stores lubricating oil. The lubricating oil stored in the tank 16 is supplied to the guide rail 8 by the supply member 17. For example, a portion of the supply member 17 is formed in a string shape and is immersed in the lubricating oil in the tank 16. In addition, a portion of the supply member 17 contacts the guide rail 8. As a result, the lubricating oil in the tank 16 is sucked up into the string-shaped portion by capillary action and applied to the guide surface 8c of the guide rail 8. The supply member 17 may also supply the lubricating oil to the guide rail 8 by other methods.

[0019] As an example, the tank 16 has a concave shape in a plan view. As shown in Fig. 2, the tank 16 is disposed so as to surround the guide portion 8b on three sides in a direction opposite to the direction in which the guide portion 8b protrudes from the base portion 8a in a plan view.

[0020] The elevator apparatus 1 further includes a heating device 18. The heating device 18 is a device for heating the lubricating oil stored in the tank 16. The viscosity of the lubricating oil increases as the temperature drops. When the viscosity of the lubricating oil increases, the lubricating oil may not be sufficiently distributed over the guide rails 8. This phenomenon is likely to occur when the elevator apparatus 1 is installed in a cold region. The heating device 18 warms the lubricating oil, thereby solving this problem.

[0021] The heating device 18 includes a heater 19 for heating the lubricating oil stored in the tank 16, and a driver 20 for driving the heater 19. In the example shown in FIG. 2, the heater 19 is provided in the fuel supply device 15. The heater 19 may also be provided in the car 2. The heater 19 is arranged so as to face the tank 16 from the side. In the preferred example shown in FIG. 2, the heater 19 is arranged so as to surround the outside of the tank 16 on three sides in a plan view. Power to the heating device 18 is supplied from, for example, a control unit (not shown) provided in the car 2.

[0022] The heater 19 may be driven, i.e., the lubricating oil may be heated, at any timing. As one example, the heater 19 may be driven constantly. As another example, the heater 19 may be driven periodically. The heater 19 may be driven in accordance with the temperature of the lubricating oil. The driver 20 may be provided in the fuel supply device 15 or in the car 2.

[0023] In the example shown in this embodiment, the lubricating oil stored in the tank 16 can be heated by the heating device 18. This prevents a drop in the temperature of the lubricating oil, which can cause a shortage of lubricating oil and lead to abnormal noise. Furthermore, the heater 19 of the heating device 18 is arranged to face the tank 16 from the side. In other words, the heater 19 is arranged outside the tank 16 and is not immersed in the lubricating oil stored in the tank 16. This reduces the maintenance effort required for the heating device 18.

[0024] The elevator device 1 also includes a guide rail 21. The guide rail 21 is a rail for guiding the movement of the counterweight 3. The guide rail 21 is provided in the hoistway 4 so as to extend in the vertical direction. The guide rail 21 is arranged over the range in which the counterweight 3 moves. FIG. 1 shows an example in which the guide rail 21 includes a pair of rails 22 and 23. The counterweight 3 is arranged between the rails 22 and 23, and its horizontal displacement is restrained by the rails 22 and 23.

[0025] Fig. 3 is a view showing the BB cross section of Fig. 1. In the following, the configuration on the rail 22 side will be described. The configuration on the rail 23 side is the same as the configuration on the rail 22 side.

[0026] The shape of the guide rail 21 is the same as that of the guide rail 8. That is, as shown in FIG. 3, the guide rail 21 comprises a base 21a and a guide portion 21b. The base 21a is fixed to a bracket 24 using a clip and a bolt (neither of which are shown). The bracket 24 is an example of a member that supports the guide rail 21. The bracket 24 is provided on a fixed body of the elevator shaft 4. The guide portion 21b protrudes from the base 21a. Hereinafter, the direction in which the guide portion 21b protrudes from the base 21a will also be referred to as the first direction. The first direction is a horizontal direction. A guide surface 21c for guiding the movement of the car 2 is formed on the guide portion 21b.

[0027] The counterweight 3 includes an adjusting weight 25, a support frame 26, and a guide unit 27. The adjusting weight 25 is a weight for adjusting the overall weight of the counterweight 3. The support frame 26 has a rectangular ring shape overall and supports the adjusting weight 25. The support frame 26 is arranged so as to surround the top, bottom, left, and right of the multiple loaded adjusting weights 25. The guide unit 27 is provided on the support frame 26. The guide unit 27 is a device for guiding the movement of the counterweight 3 together with the guide rail 21. Figure 1 shows an example in which the guide units 27 are provided at four locations on the top, bottom, left, and right of the support frame 26. The guide unit 27 is arranged to face the guide surface 21c of the guide rail 21. As an example, the guide unit 27 includes a shoe that slides on the guide surface 21c.

[0028] The elevator apparatus 1 further includes an oil supply device 28. The oil supply device 28 is a device for supplying lubricating oil to the guide rail 21. The oil supply device 28 is provided on the counterweight 3. FIG. 1 shows an example in which the oil supply devices 28 are respectively arranged on the upper left guide unit 27 and on the upper right guide unit 27. As an example, the oil supply devices 28 are provided on the guide units 27. The oil supply devices 28 may also be provided on the support frame 26.

[0029] The configuration of the oil supply device 28 is similar to that of the oil supply device 15. The oil supply device 28 includes a tank 29 and a supply member 30. Lubricating oil is stored in the tank 29. The lubricating oil stored in the tank 29 is supplied to the guide rail 21 by the supply member 30. For example, a portion of the supply member 30 is formed in a string shape and is immersed in the lubricating oil in the tank 29. Furthermore, a portion of the supply member 30 comes into contact with the guide rail 21. As a result, the lubricating oil in the tank 29 is sucked up into the string-shaped portion by capillary action and applied to the guide surface 21c of the guide rail 21. The supply member 30 may supply the lubricating oil to the guide rail 21 by other methods.

[0030] As an example, the tank 29 has a concave shape in a plan view. As shown in Fig. 3, the tank 29 is disposed so as to surround the guide portion 21b on three sides in a direction opposite to the first direction in a plan view.

[0031] The elevator device 1 further includes a heating device 31. The heating device 31 is a device for heating the lubricating oil stored in the tank 29.

[0032] The heating device 31 includes a heater 32 for heating the lubricating oil stored in the tank 29 and a driver 33 for driving the heater 32. In the example shown in FIG. 3, the heater 32 is provided on the bracket 24. The heater 32 may also be provided on the guide rail 21. If the guide rail 21 includes a member for connecting short unit rails, the heater 32 may also be provided on that member. Note that the rail 22, i.e., the guide rail 21, is formed by connecting a number of unit rails in a straight line. A bolt, clip, or magnet may be used to secure the heater 32.

[0033] The heater 32 is arranged to face the tank 29 from the side when the car 2 is arranged at the first position. The first position is set in advance. For example, the first position is a stopping position on the lobby floor of a building. It is preferable that the heater 32 does not overlap with the counterweight 3 and the fuel supply device 28 in a plan view.

[0034] 3, the heater 32 includes a first heater 34 and a second heater 35. The first heater 34 and the second heater 35 are each arranged along the first direction. The guide portion 21b of the guide rail 21 is arranged between the first heater 34 and the second heater 35.

[0035] Furthermore, when the car 2 is placed at the first position, at least a portion of the tank 29 is placed between the first heater 34 and the second heater 35. When the car 2 is placed at the first position, it is preferable that the entire tank 29 is placed between the first heater 34 and the second heater 35. It is preferable that the heater 32 does not come into contact with the tank 29 even when the car 2 is placed at the first position. However, it is preferable that the gap formed between the heater 32 and the tank 29 when the car 2 is placed at the first position is small.

[0036] As an example, power for the heating device 31 is supplied from the control device 7. Power for the heating device 31 may also be supplied from equipment installed at the nearest landing. The heating device 31 may be equipped with a battery. The driver 33 may be provided on the bracket 24 or on the guide rail 21. The driver 33 may also be provided on a fixed body of the elevator shaft 4.

[0037] Furthermore, the heater 32 is driven, i.e., the heater 32 generates heat, when the car 2 is positioned at the first position. The heater 32 may be driven only when the car 2 is positioned at the first position. The heater 32 may be driven all the time when the car 2 is positioned at the first position. In order to warm the lubricating oil, the control device 7 may stop the car 2 at the first position when no calls are occurring. The control device 7 may periodically stop the car 2 at the first position. When the temperature of the lubricating oil falls below a reference value, the car 2 may be stopped at the first position and the heater 32 may be driven.

[0038] In the example shown in this embodiment, the heating device 31 can heat the lubricating oil stored in the tank 29. This prevents a drop in the temperature of the lubricating oil, which can lead to a shortage of lubricating oil and the generation of abnormal noise. Furthermore, the heater 32 of the heating device 31 is arranged to face the tank 29 from the side when the car 2 is placed in the first position. In other words, the heater 32 is arranged outside the tank 29 and is not immersed in the lubricating oil stored in the tank 29. This reduces the maintenance effort required for the heating device 31.

[0039] The following describes other functions that can be adopted by the elevator system 1. If possible, the elevator system 1 may adopt a combination of the following functions.

[0040] Fig. 4 is a diagram showing another example of the cross section taken along line BB in Fig. 1. In the example shown in Fig. 4, the warming device 31 further includes a heat-retaining member 36. The heat-retaining member 36 is preferably made of a heat insulating material.

[0041] The heat insulating member 36 is disposed facing the tank 29 from the side so as to cover the surface of the tank 29 facing the first direction. The heat insulating member 36 may be in contact with the tank 29, or a small gap may be formed between the heat insulating member 36 and the tank 29. The heat insulating member 36 is provided on the fuel supply device 28 or the counterweight 3.

[0042] As shown in FIG. 4, when the car 2 is placed in the first position, the heat insulation member 36 is arranged so that the first heater 34 and the second heater 35 surround the tank 29 on three sides. FIG. 4 shows a preferred example in which the heat insulation member 36 does not contact the first heater 34 and the second heater 35. In the example shown in FIG. 4, when the car 2 is placed in the first position, an edge 36a on one side of the heat insulation member 36 is adjacent to the tip 34a of the first heater 34, and an edge 36b on the other side of the heat insulation member 36 is adjacent to the tip 35a of the second heater 35. When the car 2 is placed in the first position, the heat insulation member 36 may be arranged between the first heater 34 and the second heater 35. It is preferable that the heat insulation member 36 does not overlap other parts of the heating device 31, including the heater 32, in a plan view.

[0043] In the example shown in Figure 4, the lubricating oil can be heated efficiently.

[0044] Fig. 5 is a diagram showing another example of the cross section BB of Fig. 1. In the example shown in Fig. 5, the warming device 31 further includes a detector 37. The detector 37 is a device for detecting that the car 2 is placed in the first position.

[0045] In the example shown in FIG. 5, the detector 37 is provided on the heater 32. The detector 37 detects the approach of the heat retention member 36. Any method may be used by the detector 37 to detect that the heat retention member 36 is positioned in an approaching position. The detector 37 may be a proximity sensor. The detector 37 may be a switch operated by a cam provided on the heat retention member 36. In the example shown in FIG. 5, when the detector 37 detects the approach of the heat retention member 36, the driver 33 drives the heater 32. That is, the driver 33 causes the heater 32 to generate heat.

[0046] The detector 37 may be provided in the heat insulating member 36. When the detector 37 is provided in the heat insulating member 36, the detector 37 detects the approach of the heater 32. When the detector 37 detects the approach of the heater 32, the driver 33 causes the heater 32 to generate heat.

[0047] In the example shown in Fig. 5, no information from the control device 7 is required to drive the heater 32. Therefore, even when adding the heating device 31 to an existing elevator device, the elevator device can be easily renovated. [Explanation of symbols]

[0048] REFERENCE SIGNS LIST 1 elevator device, 2 car, 3 counterweight, 4 hoistway, 5 rope, 6 hoisting machine, 7 control device, 8 guide rail, 8a base, 8b guide portion, 8c guide surface, 9-10 rail, 11 bracket, 12 car room, 13 car frame, 14 guide unit, 15 oil supply device, 16 tank, 17 supply member, 18 heating device, 19 heater, 20 driver, 21 guide rail, 21a base, 21b guide portion, 21c guide surface, 22-23 rail, 24 bracket, 25 adjusting weight, 26 support frame, 27 guide unit, 28 oil supply device, 29 tank, 30 supply member, 31 Heating device, 32 heater, 33 driver, 34 first heater, 34a tip portion, 35 second heater, 35a tip portion, 36 heat-retaining member, 36a to 36b edges, 37 detector

Claims

1. a car and a counterweight that travel in the elevator shaft; a guide rail provided in the elevator shaft for guiding movement of the counterweight; an oil supply device provided on the counterweight; A heating device; Equipped with The fuel supply device is A tank for storing lubricating oil; a supply member for supplying the lubricating oil stored in the tank to the guide rail; Equipped with The heating device includes a heater for heating the lubricating oil stored in the tank, The heater is provided on the guide rail or a member supporting the guide rail, and is arranged to face the tank from the side when the car is located at a preset first position.

2. The guide rail is A base and a guide portion protruding from the base portion and having a guide surface formed thereon for guiding the movement of the counterweight; Equipped with the heater includes a first heater and a second heater arranged along a horizontal first direction, the first direction is a direction in which the guide portion protrudes from the base portion, 2. The elevator system of claim 1, wherein when the car is positioned at the first position, at least a portion of the tank is positioned between the first heater and the second heater.

3. The heating device further includes a heat insulating member provided on the fuel supply device or the counterweight so as to face the tank from a side, 3. The elevator apparatus according to claim 2, wherein the heat-insulating member is disposed so that the first heater and the second heater surround the tank on three sides when the car is disposed at the first position.

4. The heating device is a detector provided on one of the heater and the heat insulating member and configured to detect the approach of the other of the heater and the heat insulating member; a driver that causes the heater to generate heat when the detector detects the approach of the other object; The elevator system of claim 3 further comprising:

5. 5. The elevator apparatus according to claim 1, wherein the heater does not overlap the counterweight and the fuel supply device in a plan view.

6. A car moving through the elevator shaft, a guide rail provided in the elevator shaft for guiding movement of the car; a fuel supply device provided in the car; A heating device; Equipped with The fuel supply device is A tank for storing lubricating oil; a supply member for supplying the lubricating oil stored in the tank to the guide rail; Equipped with The heating device includes a heater for heating the lubricating oil stored in the tank, The heater is provided in the car or the fuel supply device and is arranged to face the tank from the side.

7. The elevator apparatus according to claim 6, wherein the heater is disposed so as to surround the tank on three sides in a plan view.

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