CN109952262B - Method for inspecting emergency stop device of elevator - Google Patents
Method for inspecting emergency stop device of elevator Download PDFInfo
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- CN109952262B CN109952262B CN201680090838.1A CN201680090838A CN109952262B CN 109952262 B CN109952262 B CN 109952262B CN 201680090838 A CN201680090838 A CN 201680090838A CN 109952262 B CN109952262 B CN 109952262B
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- sheave
- car
- suspension body
- emergency stop
- stop device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
Abstract
In an inspection method for an emergency stop device of an elevator, a counterweight is collided, an external force is applied to a part of a suspension body suspending a car and the counterweight to lift the car, and the emergency stop device mounted on the car is operated. Then, the external force is released to loosen the suspension body. Then, the drive sheave of the hoisting machine is rotated.
Description
Technical Field
The present invention relates to a method for inspecting an emergency stop device of an elevator, which checks an idle running of a drive sheave of a hoisting machine in a state where the emergency stop device is operated.
Background
Generally, an emergency stop device is mounted on a car of an elevator. The safety device is a device for stopping the car in an emergency when an abnormal condition such as cutting of the main rope occurs.
In such an emergency stop device, a check is performed at appropriate intervals to check whether the device is operating normally. As one of conventional inspection methods, there is a method of rotating a drive sheave of a hoisting machine at a low speed in a direction in which a car descends after an emergency stop device is operated.
In this inspection, if the emergency stop device is operating normally, the car is not moving, and the drive sheave slides with respect to the main rope, whereby the drive sheave is idling. On the other hand, when the safety device does not operate normally, the car cannot be supported by the safety device, and the car descends, so that the drive sheave does not idle. That is, by checking the idle running of the drive sheave, it is possible to check that the emergency stop device is operating normally.
In the above-described inspection, the hoisting machine needs to output a torque larger than a torque required during normal operation of the elevator in order to idle the drive sheave. Therefore, it is necessary to use a large-sized hoisting machine only for the inspection of the emergency stop device.
In contrast, in the conventional inspection method for the emergency stop device, a jack is disposed below the counterweight in advance, and after the emergency stop device is operated, the counterweight is lifted by the jack and the rope is slackened. Thereby, the torque required for idling the drive sheave is reduced (see, for example, patent document 1).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open No. 2008-189430
Disclosure of Invention
Problems to be solved by the invention
However, in the conventional inspection method for the emergency stop device, a large force is required to lift the counterweight, and a large-sized jack needs to be carried into a pit of the hoistway and installed.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an inspection method for an emergency stop device of an elevator, which can reduce a torque required for idling a drive sheave without raising a counterweight.
Means for solving the problems
In the inspection method of the emergency stop device of the elevator of the present invention, the counterweight is collided, the external force is applied to a part of the suspension body suspending the car and the counterweight to lift the car, the emergency stop device mounted on the car is operated, the external force is released to loosen the suspension body, and the driving rope wheel of the traction machine is rotated.
Effects of the invention
In the inspection method of the emergency stop device of the elevator according to the present invention, the counterweight is caused to collide, an external force is applied to a part of the suspension body to raise the car, the emergency stop device is operated, the external force is released to loosen the suspension body, and the drive sheave of the hoisting machine is rotated.
Drawings
Fig. 1 is a configuration diagram showing an elevator according to embodiment 1 of the present invention.
Fig. 2 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 1.
Fig. 3 is an explanatory view showing a state in which the main rope is pressed by the jack device of fig. 2.
Fig. 4 is an explanatory diagram illustrating a state in which the emergency stop device is operated from the state of fig. 3.
Fig. 5 is an explanatory diagram showing a state where pressing of the jack device of fig. 4 is released.
Fig. 6 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 2 of the present invention.
Fig. 7 is an explanatory view showing a state in which the main rope is pressed by the jack device of fig. 6.
Fig. 8 is an explanatory diagram illustrating a state in which the emergency stop device is operated from the state of fig. 7.
Fig. 9 is an explanatory diagram showing a state where pressing of the jack device of fig. 8 is released.
Fig. 10 is a perspective view showing a main part of an elevator apparatus according to embodiment 3 of the present invention.
Fig. 11 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 3.
Fig. 12 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 4 of the present invention.
Fig. 13 is an explanatory view showing a state in which the main rope is pressed by the jack device of fig. 12.
Fig. 14 is an explanatory diagram illustrating a state in which the emergency stop device is operated from the state of fig. 13.
Fig. 15 is an explanatory diagram showing a state in which pressing of the jack device of fig. 14 is released.
Fig. 16 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 5 of the present invention.
Fig. 17 is an explanatory view showing a state in which the main rope is pressed by the jack device of fig. 16.
Fig. 18 is an explanatory diagram illustrating a state in which the emergency stop device is operated from the state of fig. 17.
Fig. 19 is an explanatory diagram showing a state where pressing of the jack device of fig. 18 is released.
Fig. 20 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 6 of the present invention.
Fig. 21 is an explanatory view showing a state in which the main rope is pressed by the jack device of fig. 20.
Fig. 22 is an explanatory diagram illustrating a state in which the emergency stop device is operated from the state of fig. 21.
Fig. 23 is an explanatory diagram showing a state where pressing of the jack device of fig. 22 is released.
Fig. 24 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 7 of the present invention.
Fig. 25 is an explanatory view showing a state in which the main rope is pressed by the jack device of fig. 24.
Fig. 26 is an explanatory diagram showing a state in which the emergency stop device is operated from the state of fig. 25.
Fig. 27 is an explanatory diagram showing a state where pressing of the jack device of fig. 26 is released.
Fig. 28 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 8 of the present invention.
Fig. 29 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 9 of the present invention.
Fig. 30 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 10 of the present invention.
Fig. 31 is an explanatory diagram showing a state in which preparation for applying an external force to the main rope of fig. 30 is performed.
Fig. 32 is an explanatory diagram showing a state in which the emergency stop device is operated and the counterweight is lowered from the state of fig. 31.
Fig. 33 is an explanatory diagram showing a state in which the external force for the main rope is released from the state of fig. 32.
Fig. 34 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 11 of the present invention.
Fig. 35 is an explanatory diagram showing a state in which the 2 nd end portion of the main rope of fig. 34 is lifted.
Fig. 36 is an explanatory diagram illustrating a state in which the emergency stop device of fig. 35 is operated.
Fig. 37 is an explanatory view showing a state where the 2 nd end portion of the main rope of fig. 36 is lowered.
Fig. 38 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 12 of the present invention.
Fig. 39 is an explanatory diagram showing a state in which the deflector wheel of fig. 38 is raised.
Fig. 40 is an explanatory diagram illustrating a state in which the safety device 14 of fig. 39 is operated.
Fig. 41 is an explanatory diagram illustrating a state in which the deflector wheel of fig. 40 is lowered.
Fig. 42 is an explanatory diagram illustrating an inspection method of the emergency stop device according to embodiment 13 of the present invention.
Fig. 43 is an explanatory diagram showing a state where the 2 nd hoist wheel of fig. 42 is lowered.
Fig. 44 is an explanatory diagram illustrating a state in which the emergency stop device of fig. 43 is operated.
Fig. 45 is an explanatory diagram showing a state where the 2 nd hoist wheel of fig. 44 is raised.
Detailed Description
The following describes a mode for carrying out the present invention with reference to the drawings.
Fig. 1 is a configuration diagram showing an elevator according to embodiment 1 of the present invention. In the drawing, a machine room 2 is provided in an upper part of a hoistway 1. The machine room 2 is provided with a hoisting machine 3, a deflector sheave 4, and a control device 5. The hoisting machine 3 has a drive sheave 6, a hoisting machine motor 3a, and a hoisting machine brake 3 b. The hoisting machine motor 3a rotates the drive sheave 6. The hoisting machine brake 3b brakes the rotation of the drive sheave 6.
A plurality of main ropes 7 as suspension bodies are wound around the drive sheave 6 and the deflector sheave 4. A car 8 is connected to the 1 st end of the main rope 7. A counterweight 9 is connected to the 2 nd end of the main rope 7.
The car 8 and the counterweight 9 are suspended in the hoistway 1 by the main ropes 7, and are raised and lowered in the hoistway 1 by rotating the drive sheave 6. The control device 5 controls the hoisting machine 3 to raise and lower the car 8 at a set speed.
A pair of car guide rails 10 and a pair of counterweight guide rails 11 are provided in the hoistway 1. In fig. 1, only one car guide rail 10 and one counterweight guide rail 11 are shown. The car guide rail 10 guides the up-and-down movement of the car 8. The counterweight guide rail 11 guides the raising and lowering of the counterweight 9. A car buffer 12 and a counterweight buffer 13 are provided at the bottom of the hoistway 1.
An emergency stop device 14 is mounted on a lower portion of the car 8. The safety device 14 holds the pair of car guide rails 10 to bring the car 8 to a safety stop. The safety device 14 includes a pair of gripping portions (not shown) that grip the car guide rail 10. The safety device 14 is provided with an operating lever 15 for operating the safety device 14.
A speed governor 16 is provided in the machine room 2. The speed governor 16 monitors whether the car 8 travels at an excessive speed. The governor 16 includes a governor sheave 17, an excessive speed detection switch (not shown), a rope grab (not shown), and the like. A governor rope 18 is wound around the governor sheave 17.
The governor rope 18 is laid in a ring shape in the hoistway 1 and connected to the operating lever 15. The governor rope 18 is wound around a tension sheave 19 disposed at a lower portion of the hoistway 1. When the car 8 is raised and lowered, the governor rope 18 is circulated and the governor sheave 17 is rotated at a rotation speed corresponding to the traveling speed of the car 8.
The governor 16 mechanically detects whether or not the traveling speed of the car 8 has reached an excessive speed. As the excessive speed detected by the speed governor 16, a 1 st excessive speed Vos higher than the rated speed Vr and a 2 nd excessive speed Vtr higher than the 1 st excessive speed are set.
When the traveling speed of the car 8 reaches the 1 st excessive speed Vos, the excessive speed detection switch is operated. Thereby, the power supply to the hoisting machine 3 is cut off, the hoisting machine brake 3b operates, and the car 8 stops suddenly.
When the descending speed of the car 8 reaches the 2 nd excessive speed Vtr, the rope grab grips the governor rope 18, and the circulation of the governor rope 18 is stopped. Thereby, the operating lever 15 is operated, the safety device 14 is operated, and the car 8 is stopped in an emergency.
Next, a method of inspecting the safety device 14 according to embodiment 1 will be described. In the inspection method of embodiment 1, first, the counterweight 9 is caused to collide. Then, an external force is applied to a part of the main ropes 7 to raise the car 8. Next, the emergency stop device 14 is operated. Then, the external force is released to loosen the main ropes 7. Then, the drive sheave 6 is rotated in this state.
Here, the operation of hitting the counterweight 9 is, for example, as follows. Namely, the operation is as follows: the counterweight 9 is lowered, and the counterweight 9 and the counterweight buffer 13 are brought into direct contact with each other, thereby compressing the counterweight buffer 13. Or an action that: a cover or a table covering the counterweight buffer 13 is provided, the counterweight 9 is lowered, and the counterweight 9 is brought into contact with the cover or the table, that is, the counterweight 9 is placed on the cover or the table.
Fig. 2 to 5 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 1. When the emergency stop device 14 is inspected, the car 8 is raised by the hoisting machine 3 and the counterweight 9 is caused to collide with each other as shown in fig. 2.
Further, a jack device 21 is provided in the machine room 2. The jack device 21 is supported and fixed to a hoisting machine base (not shown) that supports the hoisting machine 3, for example, via a support tool (not shown). The jack device 21 is disposed perpendicular to a transition portion 7a between the drive sheave 6 and the deflector sheave 4 of the main rope 7.
The jack device 21 further includes a jack main body 22 and jack sheaves 23 of the same number as the main ropes 7. Each jack pulley 23 is rotatably provided at the tip end of the jack main body 22, and is in contact with the intermediate portion of the transition portion 7a of the corresponding main rope 7. The jack pulley 23 can be moved in a direction perpendicular to the transition portion 7a by the jack main body 22.
The jack device 21 may be configured to move the jack pulleys 23 by the jack main bodies 22, or may be configured to move 2 or more jack pulleys 23 by 1 jack main body 22. As the jack main body 22, for example, a mechanical jack or a hydraulic jack can be used. The jack device 21 may be set to be always on unless it does not interfere with normal operation.
Then, the hoisting machine brake 3b is released, and as shown in fig. 3, the transition portion 7a is pressed obliquely downward by the jack device 21. Thereby, the intermediate portion of the transition portion 7a is bent, and the path length of the transition portion 7a becomes long. At this time, since the car 8 is in an unloaded state and lighter than the counterweight 9 and the hoisting machine brake 3b is released, the car 8 is suspended by the amount of change in the path length of the transition portion 7a while the down-hit state of the counterweight 9 is maintained.
Next, as shown in fig. 4, the safety device 14 is operated. Then, as shown in fig. 5, the pressing of the transition portion 7a by the jack device 21 is released. Thereby, the curved transition portion 7a returns to a straight line shape, and the main rope 7 is loosened accordingly. Although fig. 5 is depicted slightly exaggerated for easy understanding, the main ropes 7 are not actually loosened to such an extent that they are disengaged from the rope grooves of the drive sheave 6.
In this state, the drive sheave 6 is rotated by the hoisting machine motor 3a in a direction to lower the car 8. Then, it is checked whether or not the drive sheave 6 is slipping with respect to the main rope 7 and idling.
According to the inspection method of the emergency stop device 14, the main ropes 7 are loosened and the tension of the main ropes 7 is lowered, so that the torque of the hoisting machine motor 3a required to idle the drive sheave 6 can be reduced without lifting the counterweight 9. This makes it possible to reduce the size of the hoisting machine motor 3a and the inverter for driving the hoisting machine motor 3 a.
Further, since the car 8 is lifted by pressing the main rope 7 in the vertical direction, the force required for the jack device 21 is smaller than that in the case of lifting the counterweight 9 only directly upward, for example, about 1/4. Therefore, the jack device 21 can be downsized, and the carrying in, carrying out, installation, and removal of the jack device 21 can be easily performed.
Further, since the transition portion 7a of the main rope 7 is pressed, the inspection work can be performed only in the machine room 2.
Here, when the tension of the main rope 7 is F, the traction capacity is Γ, and the diameter of the cross section of the main rope 7 is D, the torque T required for the idling of the drive sheave 6 is expressed by the following equation.
T＝(1-1/Γ)F×D/2
Accordingly, assuming that the change in tension of the main rope 7 caused by the inspection method of embodiment 1 is Δ F, the difference Δ T, which is the amount of reduction in torque required to idle the drive sheave 6, is expressed by the following equation.
ΔT＝(1-1/Γ)DΔF/2
When the length of the transition portion 7a is 2a, the pressing length of the transition portion 7a is b, the young' S modulus of the main rope 7 is E, the cross-sectional area of the main rope 7 is S, and the total length of the main rope 7 is L, the change Δ L in the path length, the change Δ F in the tension, and the reduction amount Δ T of the required torque at the time of releasing the pressing against the transition portion 7a are expressed by the following expressions, respectively.
[ mathematical formula 1 ]
[ mathematical formula 2 ]
ΔF＝ES Δl/L
[ mathematical formula 3 ]
ΔT＝(1-1/Γ)ESDΔl/(2L)
Next, fig. 6 to 9 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 2 of the present invention, and the elevator apparatus has the same configuration as that of embodiment 1. In embodiment 2, the transition portion 7a is pressed from the opposite direction to embodiment 1. The other inspection methods are the same as those in embodiment 1.
In this way, even if the transition portion 7a is pressed in the opposite direction, the same effect as that of embodiment 1 can be obtained.
Next, fig. 10 is a perspective view showing a main part of an elevator apparatus according to embodiment 3 of the present invention. In embodiment 3, 3 main ropes 7 are wound around the drive sheave 6 and the deflector sheave 4 in a fully wound (japanese: フルラップ) manner. Each main rope 7 is wound around the drive sheave 6 and the deflector sheave 4 for 1 and a half turns. Therefore, each main rope 7 has a 1 st transition portion 7b, a 2 nd transition portion 7c, and a 3 rd transition portion 7d between the drive sheave 6 and the deflector sheave.
The 1 st transition portion 7b is a portion connected to a portion of the main rope 7 between the car 8 and the drive sheave 6. The 3 rd transition portion 7d is a portion connected to a portion of the main rope 7 between the counterweight 9 and the deflector pulley 4. The 2 nd transition portion 7c is a portion located between the 1 st transition portion 7b and the 3 rd transition portion 7d of the main rope 7.
The 1 st and 3 rd transition portions 7b, 7d are disposed above the drive sheave 6 and the deflector sheave 4. The 2 nd transition portion 7c is disposed below the drive sheave 6 and the deflector sheave 4. The other structures of the elevator apparatus are the same as those of embodiment 1.
Next, a method of inspecting the safety device 14 will be described. The basic steps of the inspection method are the same as those in embodiment 1, but in the case of the full winding method, there are, for example, the following 3 methods as to where the 1 st to 3 rd transition portions 7b to 7d are pressed.
The 1 st method is a method of pressing the 1 st transition part 7b and the 3 rd transition part 7 d. In this case, the change Δ l in the path length when the pressing against the 1 st and 3 rd transition portions 7b and 7d is released becomes 2 times the expression indicating Δ l in embodiment 1.
The 2 nd method is a method of pressing only the 3 rd transition portions 7d of the 3 main ropes 7. In this case, the change Δ l in the path length when the pressing against the 1 st and 3 rd transition portions 7b and 7d is released is the same as the expression Δ l in embodiment 1.
The 3 rd method is a method of pressing all of the 1 st to 3 rd transition parts 7b to 7 d. For example, as shown in fig. 11, a jack device 21 having jack pulleys 23 provided on both sides of a jack main body 22 may be disposed between the drive sheave 6 and the deflector sheave 4, and the 1 st and 3 rd transition portions 7b and 7d and the 2 nd transition portion 7c may be pressed so as to increase the interval therebetween. In this case, the change Δ l in the path length when the pressing against the 1 st and 3 rd transition portions 7b and 7d is released becomes 3 times the expression indicating Δ l in embodiment 1.
The expression representing the tension change Δ F and the required reduction amount Δ T of torque is the same as that of embodiment 1.
The same effect as that of embodiment 1 can be obtained in the elevator apparatus of the full winding type. Further, according to the methods 1 and 3, sufficient tension change can be obtained with a small pressing amount.
Next, fig. 12 to 15 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 4 of the present invention, and the structure of the elevator apparatus is the same as that of embodiment 1. In embodiment 4, the portion of the main rope 7 between the car 8 and the drive sheave 6 is pressed in the direction perpendicular to the main rope 7 by the jack device 21. The other inspection methods are the same as those in embodiment 1.
In this way, even if the portion of the main rope 7 between the car 8 and the drive sheave 6 is pressed, the torque of the hoisting machine motor 3a required to idle the drive sheave 6 can be reduced without lifting the counterweight 9.
Next, fig. 16 to 19 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 5 of the present invention. In embodiment 5, an additional sheave 24 is provided to be in contact with a portion of the main rope 7 between the car 8 and the drive sheave 6 in a state where the additional sheave is not pressed by the jack device 21. The additional sheave 24 is provided directly below the machine room 2 or the drive sheave 6 of the hoistway 1. The additional sheave 24 is provided when the emergency stop device 14 is inspected, but may be provided at all times if possible.
The upper sheave of embodiment 5 is a drive sheave 6. The other structures of the elevator apparatus are the same as those of embodiment 1. The method of inspecting the safety device 14 is the same as that in embodiment 4.
In addition to the same effects as those of embodiment 4, the inspection method of the safety device 14 can prevent a load from being applied to the car 8 in the horizontal direction when the main rope 7 is pressed by the jack device 21.
In embodiments 4 and 5, the part of the main rope 7 between the car 8 and the drive sheave 6 is pressed, but the part of the main rope 7 between the counterweight 9 and the deflector sheave 4 may be pressed. In this case, the upper pulley may be the deflector wheel 4, and the additional pulley 24 may be provided directly below the deflector wheel 4.
Next, fig. 20 to 23 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 6 of the present invention. In embodiments 1 to 5, the ratio of 1: although the description has been given of the rope winding type elevator apparatus 1, in embodiment 6, the ratio of 2: 1 a rope-winding type elevator apparatus.
The 1 st and 2 nd car hanging wheels 25a and 25b are provided at the lower part of the car 8. A counterweight suspending wheel 26 is provided on the upper portion of the counterweight 9. A 1 st rope head combination 27 and a 2 nd rope head combination 28 are provided in an upper portion of the hoistway 1. Furthermore, the deflector wheel 4 is not used.
The 1 st end of the main rope 7 is connected to the 1 st head combination 27. The 2 nd end of the main rope 7 is connected to the 2 nd head group 28. The main ropes 7 are wound around the 1 st car hoist sheave 25a, the 2 nd car hoist sheave 25b, the drive sheave 6, and the counterweight hoist sheave 26 in this order from the 1 st end side.
The jack device 21 is mounted on the car 8. The jack sheave 23 is connected to a portion of the main rope 7 between the 1 st car sheave 25a and the 2 nd car sheave 25 b. The jack device 21 may be provided in the car 8 at all times, or the jack device 21 may be provided when the emergency stop device 14 is inspected. In the drawing, the jack device 21 interferes with the 1 st and 2 nd car sheaves 25a and 25b, but does not actually interfere. The other structures of the elevator apparatus are the same as those of embodiment 1.
In embodiment 6, the portion of the main rope 7 between the 1 st car sheave 25a and the 2 nd car sheave 25b is pressed in the direction perpendicular to the main rope 7 by the jack device 21. Thereby, the car 8 ascends. The other inspection methods are the same as those in embodiment 1.
The inspection method of embodiment 6 also reduces the torque of the hoisting machine motor 3a required to idle the drive sheave 6 without lifting the counterweight 9.
In addition, regarding 2: in the 1-roping elevator apparatus, as shown in embodiments 4 and 5, for example, a portion between the 2 nd car hanging sheave 25b of the main rope 7 and the drive sheave 6 or a portion between the counterweight hanging sheave 26 and the drive sheave 6 may be pressed. In this case, as shown in embodiment 5, an additional pulley 24 may be used.
Next, fig. 24 to 27 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 7 of the present invention. In embodiment 7, the portion of the main rope 7 between the counterweight suspending sheave 26 and the 2 nd head group 28 is pressed in the direction perpendicular to the main rope 7 by the jack device 21. Thereby, the car 8 ascends.
Further, an additional sheave 24 is provided below the 2 nd rope hitch 28. The jack device 21 and the additional sheave 24 are provided when the emergency stop device 14 is inspected, but may be provided in a state of being always provided if possible. Other structures and other inspection methods of the elevator apparatus are the same as those of embodiment 6.
In addition to the same effects as those of embodiment 6, the inspection method of the safety device 14 can prevent a load from being applied to the counterweight 9 in the horizontal direction when the main rope 7 is pressed by the jack device 21.
Further, a portion of the main rope 7 between the 1 st car sheave 25a and the 1 st head combination 27 may be pressed. In this case, the additional sheave 24 is provided, whereby a load in the horizontal direction can be prevented from being applied to the car 8.
Further, the additional pulley 24 may not be used.
Further, embodiments 6 and 7 show the hoisting machine 3 installed in the upper part 2 of the hoistway 1: 1 roping type elevator apparatus, the present invention can also be applied to a hoisting machine 3 installed in a lower portion 2 of a hoistway 1: 1 rope-winding type elevator apparatus.
Next, fig. 28 is an explanatory diagram illustrating an inspection method of the emergency stop device 14 according to embodiment 8 of the present invention. In embodiments 1 to 7, an external force is applied to a part of the main rope 7 by the jack device 21, but in embodiment 8, an external force is applied to a part of the main rope 7 by an adjacent elevator to raise the car 8.
The adjacent elevator has a drive sheave 6A, a deflector sheave 4A, a main rope 7A, a car 8A, a counterweight 9A, and the like, as in the case of the elevator for inspecting the emergency stop device 14. A guide sheave 29 is provided directly above the counterweight 9A of the adjacent elevator. The guide pulley 29 is provided when the emergency stop device 14 is checked, but may be always provided if possible.
The auxiliary sheave 30 is connected to the transition portion 7 a. The 1 st end of the wire 31 as a flexible connecting member is connected to the auxiliary pulley 30. The intermediate portion of the wire 31 is wound around the guide pulley 29. The 2 nd end of the line 31 is connected to the counterweight 9A of the adjacent elevator.
In this state, the counterweight 9A is lowered by the adjacent elevator, and thereby the auxiliary sheave 30 is pulled via the wire 31 to apply an external force to the transition portion 7 a. The other inspection methods are the same as those in embodiment 1.
In this way, an external force can be applied to a part of the main rope 7 by the adjacent elevator, and the torque of the hoisting machine motor 3a required to idle the drive sheave 6 can be reduced without lifting the counterweight 9. Further, a dedicated drive source such as the jack device 21 may not be used.
Further, although the external force is applied to the transition portion 7a in embodiment 8, the external force may be applied to other portions of the main rope 7 or the direction in which the external force is applied may be changed by changing the number and positions of the guide pulleys 29, as shown in embodiments 2 to 5, for example.
Next, fig. 29 is an explanatory diagram illustrating an inspection method of an emergency stop device according to embodiment 9 of the present invention. Embodiment 8 shows a method of 1: 1 roping type elevator apparatus, however, in 2: in the 1-roping elevator apparatus, an external force can be applied to a part of the main ropes 7 by the adjacent elevator. In fig. 29, the equipment of the adjacent elevator is denoted by the reference numeral "a" similarly to fig. 28.
A 1 st guide sheave 32 is provided directly below the car 8. Further, a 2 nd guide sheave 33 is provided directly above the counterweight 9A of the adjacent elevator. The auxiliary sheave 30 is connected to a portion of the main rope 7 between the 1 st car sheave 25a and the 2 nd car sheave 25 b.
In this state, the counterweight 9A is lowered by the adjacent elevator, and thereby the auxiliary sheave 30 is pulled via the wire 31 to apply an external force to the main rope 7. Thereby, the car 8 ascends. The other inspection methods are the same as those in embodiment 1.
Thus, at 2: in the 1-roping elevator apparatus, an external force can be applied to a part of the main ropes 7 by the adjacent elevator, and the torque of the hoisting machine motor 3a required to idle the drive sheave 6 can be reduced without lifting the counterweight 9. Further, a dedicated drive source such as the jack device 21 may not be used.
Further, in embodiment 9, the external force is applied to the portion of the main rope 7 passing below the car 8, but by changing the number and positions of the guide pulleys 29, the external force may be applied to other portions of the main rope 7 or the direction in which the external force is applied may be changed, as shown in embodiment 7, for example.
In embodiments 8 and 9, the 2 nd end of the wire 31 is connected to the counterweight 9A, but the wire 31 may be connected to the car 8A side of the adjacent elevator by changing the number and positions of the guide sheaves 29. In this case, the wire 31 is also connected to the counterweight 9A via the car 8A and the main rope 7A.
Next, fig. 30 to 33 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 10 of the present invention. In embodiment 10, an external force is applied to a part of the main ropes 7 by utilizing imbalance between the weight of the car 8 and the weight of the counterweight 9.
When the emergency stop device 14 is inspected, first, as shown in fig. 30, the counterweight 9 is moved to a position above the lower collision position of the counterweight 9 by a distance h corresponding to the pressing amount of the main rope 7.
In this state, as shown in fig. 31, an upper sheave 34 is provided in contact with a portion of the main rope 7 between the counterweight suspending sheave 26 and the 2 nd head group 28. Further, a lower sheave 35 contacting the main rope 7 is provided below the upper sheave.
Further, a guide pulley 36 is provided between the upper pulley 34 and the lower pulley 35. The rotation shafts of the upper sheave 34, the lower sheave 35, and the guide sheave 36 are fixed in the hoistway 1.
The auxiliary sheave 30 is disposed so as to contact a portion of the main rope 7 between the upper sheave 34 and the lower sheave 35. The auxiliary sheave 30 is supported in the hoistway 1 via a sheave guide (not shown) and is movable in the horizontal direction.
Further, the intermediate portion of the wire 31 is hung on the guide pulley 36. Then, the 1 st end of the wire 31 is connected to the auxiliary sheave 30, and the 2 nd end of the wire 31 is connected to the counterweight 9.
Then, as shown in fig. 32, the hoisting machine brake 3b is released, and the counterweight 9 is lowered. Thereby, an external force is applied to a part of the main ropes 7 via the wire 31 and the auxiliary sheave 30, and the car 8 ascends.
Then, the emergency stop device 14 is operated. Then, as shown in fig. 33, the wire 31 is detached from the counterweight 9, and the auxiliary sheave 30 is returned to the original position. Thereby, the external force from the auxiliary sheave 30 is released, and the main rope 7 is loosened.
In this state, the drive sheave 6 is rotated by the hoisting machine motor 3a in a direction to lower the car 8. Then, it is checked whether or not the drive sheave 6 is slipping with respect to the main rope 7 and idling.
In this way, by utilizing the imbalance between the weight of the car 8 and the weight of the counterweight 9, an external force can be applied to a part of the main ropes 7, and the torque of the hoisting machine motor 3a required to idle the drive sheave 6 can be reduced without lifting the counterweight 9. Further, a dedicated drive source such as the jack device 21 may not be used.
The connecting member according to embodiments 8 to 10 is not limited to the wire 31, and may be a rope or a belt, for example.
Next, fig. 34 to 37 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 11 of the present invention. In embodiment 11, a part of the main rope 7 is the 2 nd end of the main rope 7. That is, by lifting the 2 nd end of the main rope 7, an external force is applied to a part of the main rope 7. When the external force is released, the 2 nd end of the main rope 7 is lowered to the original position.
The 2 nd head unit 28 is provided with a movable mechanism 37 for moving the 2 nd end of the main rope 7 up and down. As the movable mechanism 37, for example, a jack device is used. The movable mechanism 37 may be installed when the emergency stop device 14 is inspected, or may be installed at all times.
When the emergency stop device 14 is inspected, the car 8 is raised by the hoisting machine 3 and the counterweight 9 is caused to collide as shown in fig. 34.
Then, as shown in fig. 35, the hoisting machine brake 3b is released, and the 2 nd end of the main rope 7 is lifted up by the movable mechanism 37. Thereby, the car 8 ascends.
Next, as shown in fig. 36, the safety device 14 is operated. Then, as shown in fig. 37, the lifting force of the movable mechanism 37 is released, and the 2 nd end of the main rope 7 is lowered to the original position. Thereby, the main rope 7 is loosened by the amount of lifting the 2 nd end of the main rope 7.
In this state, the drive sheave 6 is rotated by the hoisting machine motor 3a in a direction to lower the car 8. Then, it is checked whether or not the drive sheave 6 is slipping with respect to the main rope 7 and idling.
In this way, the torque of the hoisting machine motor 3a required to idle the drive sheave 6 can be reduced without lifting the counterweight 9.
Next, fig. 38 to 41 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 12 of the present invention. In embodiment 12, the deflector wheel 4 can move up and down. Then, by raising the deflector wheel 4, an external force is applied to a part of the main rope 7, that is, a part in contact with the deflector wheel 4. When the external force is released, the deflector wheel 4 is lowered to its original position.
When the emergency stop device 14 is inspected, the car 8 is raised by the hoisting machine 3 and the counterweight 9 is caused to collide as shown in fig. 38.
Then, as shown in fig. 39, the hoisting machine brake 3b is released to raise the deflector sheave 4. That is, the deflector pulley 4 is pressed against the main rope 7. Thereby, the car 8 ascends.
Next, as shown in fig. 40, the safety device 14 is operated. Then, as shown in fig. 41, the deflector wheel 4 is lowered to the original position. That is, the pressing force of the deflector pulley 4 on the main rope 7 is released. Thereby, the main ropes 7 are loosened.
In this state, the drive sheave 6 is rotated by the hoisting machine motor 3a in a direction to lower the car 8. Then, it is checked whether or not the drive sheave 6 is slipping with respect to the main rope 7 and idling.
In this way, the torque of the hoisting machine motor 3a required to idle the drive sheave 6 can be reduced without lifting the counterweight 9.
Next, fig. 42 to 45 are explanatory views showing an inspection method of the emergency stop device 14 according to embodiment 13 of the present invention. In embodiment 13, the 2 nd car hanging wheel 25b can move up and down. That is, the 2 nd car hanging sheave 25b is a movable hanging sheave.
Then, by displacing, i.e., lowering, the 2 nd car sheave 25b in a direction away from the car 8, an external force is applied to a part of the main rope 7, i.e., a part contacting the 2 nd car sheave 25 b. When the external force is released, the 2 nd car hanging sheave 25b is returned in a direction approaching the car 8, that is, raised.
When the emergency stop device 14 is inspected, the car 8 is raised by the hoisting machine 3 and the counterweight 9 is caused to collide as shown in fig. 42.
Then, as shown in fig. 43, the hoisting machine brake 3b is released, and the 2 nd car sheave 25b is lowered. That is, the 2 nd car sheave 25b is pressed against the main rope 7. Thereby, the car 8 ascends.
Next, as shown in fig. 44, the safety device 14 is operated. Then, as shown in fig. 45, the 2 nd car hanging sheave 25b is raised to the original position. That is, the pressing force of the 2 nd car sheave 25b on the main rope 7 is released. Thereby, the main ropes 7 are loosened.
In this state, the drive sheave 6 is rotated by the hoisting machine motor 3a in a direction to lower the car 8. Then, it is checked whether or not the drive sheave 6 is slipping with respect to the main rope 7 and idling.
In this way, the torque of the hoisting machine motor 3a required to idle the drive sheave 6 can be reduced without lifting the counterweight 9.
The 1 st car hanging sheave 25a may be a movable hanging sheave.
In embodiments 1 to 13, the main rope 7 is shown as the suspension body, but the suspension body is not limited thereto and may be a belt, for example.
Further, the present invention can be applied to various types of elevators such as a machine room-less elevator, a double-deck elevator, and a single-shaft multi-car elevator.
Description of the reference symbols
3: a traction machine; 4: a deflector wheel (upper pulley); 6: a drive sheave (upper sheave); 7: a main rope (suspension body); 8: a car; 9: a counterweight; 9A: the counterweight of the adjacent elevator; 13: a counterweight buffer; 14: an emergency stop device; 21: a jack device; 23: a pulley for a jack; 24: adding a pulley; 25 a: 1 st car hanging wheel; 25 b: 2 nd car hanging wheel (movable hanging wheel); 27: 1, rope end combination; 28: 2, rope end combination; 31: wire (connecting member).
Claims (11)
1. An inspection method of an emergency stop device of an elevator, wherein,
so that the counterweight can be collided downwards,
an external force is applied to a part of a suspension body suspending a car and a counterweight to lift the car,
an emergency stop device mounted on the car is operated,
the external force is released to make the suspension body loose,
the drive sheave of the hoisting machine is rotated.
2. The inspection method of an emergency stop device of an elevator according to claim 1,
a portion of the suspension body is a portion of the suspension body between the drive sheave and a deflector sheave.
3. The inspection method of an emergency stop device of an elevator according to claim 1,
the suspension body is partially disposed between an upper sheave which is one of the drive sheave and the deflector sheave and an additional sheave which is disposed directly below the upper sheave and is in contact with the suspension body.
4. The inspection method of an emergency stop device of an elevator according to claim 1,
the suspension body is partially mounted between the 1 st car suspension sheave and the 2 nd car suspension sheave of the car.
5. The inspection method of an emergency stop device of an elevator according to claim 1,
the suspension body has a portion between a rope end combination connected to an end of the suspension body and an additional sheave provided so as to be in contact with the suspension body directly below the rope end combination.
6. The inspection method of an emergency stop device of an elevator according to any one of claims 1 to 5,
an external force is applied to a part of the suspension body by a jack device having a jack pulley in contact with the suspension body.
7. The inspection method of an emergency stop device of an elevator according to any one of claims 1 to 5,
the counterweight of the adjacent elevator and a part of the suspension body are connected by a flexible connecting member, and an external force is applied to a part of the suspension body by lowering the counterweight of the adjacent elevator.
8. The inspection method of an emergency stop device of an elevator according to any one of claims 1 to 5,
the method includes connecting a portion of the suspension body and the counterweight using a flexible connecting member, compressing the counterweight buffer by causing the counterweight to collide downward, and applying an external force to a portion of the suspension body via the connecting member.
9. The inspection method of an emergency stop device of an elevator according to claim 1,
a part of the suspension body is an end of the suspension body,
by raising the end of the suspension body, an external force is applied to a part of the suspension body, and when the external force is released, the end of the suspension body is lowered.
10. The inspection method of an emergency stop device of an elevator according to claim 1,
a part of the suspension body is a part of the suspension body connected with the deflector wheel,
the deflector wheel is raised to apply an external force to a part of the suspension body, and when the external force is released, the deflector wheel is lowered.
11. The inspection method of an emergency stop device of an elevator according to claim 1,
a 1 st car hanging wheel and a 2 nd car hanging wheel are arranged on the car,
a part of the suspension body is a part which is in contact with a movable suspension sheave which is either one of the 1 st car suspension sheave and the 2 nd car suspension sheave,
an external force is applied to a part of the suspension body by displacing the movable sheave in a direction away from the car, and when the external force is released, the movable sheave is returned in a direction approaching the car.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2016/084450 WO2018092308A1 (en) | 2016-11-21 | 2016-11-21 | Inspection method for elevator emergency stop device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109952262A CN109952262A (en) | 2019-06-28 |
| CN109952262B true CN109952262B (en) | 2020-06-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201680090838.1A Active CN109952262B (en) | 2016-11-21 | 2016-11-21 | Method for inspecting emergency stop device of elevator |
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| Country | Link |
|---|---|
| JP (1) | JP6610914B2 (en) |
| CN (1) | CN109952262B (en) |
| WO (1) | WO2018092308A1 (en) |
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| WO2021220349A1 (en) * | 2020-04-27 | 2021-11-04 | 三菱電機株式会社 | Elevator device |
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| JP2001122550A (en) * | 1999-10-22 | 2001-05-08 | Fujitec Co Ltd | Inspection method for emergency stopper for traction type elevator |
| JP2002348073A (en) * | 2001-05-21 | 2002-12-04 | Mitsubishi Electric Corp | Elevator device |
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| JP2005320144A (en) * | 2004-05-11 | 2005-11-17 | Mitsubishi Electric Building Techno Service Co Ltd | Testing method and device for emergency stopping device |
| JP2006341980A (en) * | 2005-06-10 | 2006-12-21 | Mitsubishi Electric Corp | Elevator device and method of controlling the same |
| JP2007008669A (en) * | 2005-06-30 | 2007-01-18 | Hitachi Ltd | Elevator device |
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| JP5174894B2 (en) * | 2008-04-08 | 2013-04-03 | 三菱電機株式会社 | Elevator apparatus and test method thereof |
| WO2015166602A1 (en) * | 2014-04-30 | 2015-11-05 | 三菱電機株式会社 | Elevator device and elevator inspection method |
-
2016
- 2016-11-21 JP JP2018551000A patent/JP6610914B2/en active Active
- 2016-11-21 CN CN201680090838.1A patent/CN109952262B/en active Active
- 2016-11-21 WO PCT/JP2016/084450 patent/WO2018092308A1/en active Application Filing
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|---|---|---|---|---|
| EP0872444A2 (en) * | 1997-04-14 | 1998-10-21 | Kone Corporation | Procedure and apparatus for testing the safety gear of an elevator |
| JP2001122550A (en) * | 1999-10-22 | 2001-05-08 | Fujitec Co Ltd | Inspection method for emergency stopper for traction type elevator |
| JP2002348073A (en) * | 2001-05-21 | 2002-12-04 | Mitsubishi Electric Corp | Elevator device |
| JP2003246561A (en) * | 2002-02-27 | 2003-09-02 | Hitachi Ltd | Control method and control apparatus for elevator |
| CN1578751A (en) * | 2002-03-06 | 2005-02-09 | 三菱电机株式会社 | Emergency stop testing device for elevator |
| JP2005320144A (en) * | 2004-05-11 | 2005-11-17 | Mitsubishi Electric Building Techno Service Co Ltd | Testing method and device for emergency stopping device |
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| CN101024465A (en) * | 2006-02-20 | 2007-08-29 | 株式会社日立制作所 | Elevator testing method and its assistant device and elevator device |
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| WO2015166602A1 (en) * | 2014-04-30 | 2015-11-05 | 三菱電機株式会社 | Elevator device and elevator inspection method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2018092308A1 (en) | 2018-05-24 |
| CN109952262A (en) | 2019-06-28 |
| JP6610914B2 (en) | 2019-11-27 |
| JPWO2018092308A1 (en) | 2019-02-14 |
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