CN115812065A

CN115812065A - Device for replacing main rope of elevator and method for replacing main rope of elevator

Info

Publication number: CN115812065A
Application number: CN202080102925.0A
Authority: CN
Inventors: 安部雅哉; 冈坂翔; 山佐礼司; 照井健弘; 玉井秀幸; 古川宽人
Original assignee: Mitsubishi Electric Corp; Mitsubishi Electric Building Solutions Corp
Current assignee: Mitsubishi Electric Corp; Mitsubishi Electric Building Solutions Corp
Priority date: 2020-07-10
Filing date: 2020-07-10
Publication date: 2023-03-17
Anticipated expiration: 2040-07-10
Also published as: CN115812065B; WO2022009411A1; JPWO2022009411A1; JP7207613B2

Abstract

Provided are a replacement device and a replacement method which can replace a main rope even when a sufficient working space cannot be ensured in an elevator landing. The replacement device (20) is provided with a 1 st protection part and a 2 nd protection part. The 1 st protection part is arranged in front of the door equipment (18). A door device (18) is provided on the upper part of the front surface of a car (9) of an elevator (1). The 1 st protective part guides an existing main rope (8) to be collected in the car (9) from above the car (9) along the 1 st direction. The 1 st protection part restricts an existing main rope (8) from approaching a door device (18) in a normal direction perpendicular to the 1 st direction. The 2 nd protection part is disposed in front of the door device (18). The 2 nd protection portion guides a newly installed main rope (8) pulled out from the interior of the car (9) to the upper side of the car (9) along the 2 nd direction. The 2 nd protection part restricts the newly installed main rope (8) from approaching the door equipment (18) in the normal direction perpendicular to the 2 nd direction.

Description

Device for replacing main rope of elevator and method for replacing main rope of elevator

Technical Field

The present invention relates to an elevator main rope replacement device and an elevator main rope replacement method.

Background

Patent document 1 discloses an example of a method of replacing a main rope of an elevator. In this replacement method, a newly installed main rope is pulled out from a drum and guided to a hoistway. The existing main rope is drawn in from the hoistway and wound around the drum.

Documents of the prior art

Patent literature

Patent document 1: japanese patent laid-open publication No. 2-249885

Disclosure of Invention

Problems to be solved by the invention

However, in the replacement method of patent document 1, a drum around which an existing main rope is wound and a drum around which a newly installed main rope is wound are disposed in a landing of an elevator. Therefore, when a sufficient working space cannot be secured in the elevator landing, the main rope cannot be replaced by this replacement method.

The present invention has been made to solve the above problems. The invention provides a replacement device and a replacement method, which can replace a main rope even when a sufficient working space cannot be ensured in a landing of an elevator.

Means for solving the problems

The main rope replacement device for an elevator of the present invention comprises: a 1 st protective part which is arranged in front of a door device arranged on the upper part of the front surface of an elevator car, guides an existing main rope collected in the car from the upper part of the car along a 1 st direction, and limits the existing main rope to approach the door device in a normal direction perpendicular to the 1 st direction; and a 2 nd protecting portion which is arranged in front of the door device, guides the newly installed main rope drawn out from the interior of the car to the upper side of the car along the 2 nd direction, and restricts the newly installed main rope from approaching the door device in a normal direction perpendicular to the 2 nd direction.

The method for replacing the main rope of the elevator comprises the following steps: a carrying-in procedure, wherein a newly-arranged main rope which is replaced with an existing main rope is carried into the interior of the elevator car; a placement step of, after the carry-in step, placing a 1 st protection part and a 2 nd protection part in front of a door device provided on an upper portion of a front surface of the car, wherein the 1 st protection part guides the existing main rope from above the car along a 1 st direction and restricts the existing main rope from approaching the door device in a normal direction perpendicular to the 1 st direction, and the 2 nd protection part guides the newly provided main rope to above the car along a 2 nd direction and restricts the newly provided main rope from approaching the door device in a normal direction perpendicular to the 2 nd direction; and a replacement step of, after the arrangement step, recovering the existing main rope into the car by the guide of the 1 st protection part, and setting the newly set main rope brought into the car by the guide of the 2 nd protection part by pulling out the main rope to the upper side of the car.

Effects of the invention

According to the replacement device and the replacement method of the present invention, the main rope can be replaced even when a sufficient working space cannot be secured in the elevator landing.

Drawings

Fig. 1 is a configuration diagram of an elevator according to embodiment 1.

Fig. 2 is a perspective view of the exchange device according to embodiment 1.

Fig. 3 is a perspective view of the storage unit according to embodiment 1.

Fig. 4 is a perspective view of the guide unit of embodiment 1.

Fig. 5 is a diagram illustrating a method of fixing the guide unit according to embodiment 1.

Fig. 6 is a diagram illustrating a method of guiding a main rope by the guide means of embodiment 1.

Fig. 7 is a diagram showing an example of a method of replacing the main rope by the replacing device of embodiment 1.

Fig. 8 is a diagram showing another example of a method of replacing a main rope by the replacing device according to embodiment 1.

Fig. 9 is a diagram showing another example of a method of replacing a main rope by the replacing device of embodiment 1.

Fig. 10 is a diagram showing another example of a method of replacing a main rope by the replacing device of embodiment 1.

Fig. 11 is a diagram illustrating a method of fixing a guide unit according to embodiment 2.

Fig. 12 is a diagram illustrating a method of fixing a guide unit according to embodiment 3.

Fig. 13 is a diagram illustrating a method of fixing the guide unit according to embodiment 4.

Fig. 14 is a diagram illustrating a method of fixing the guide unit according to embodiment 4.

Fig. 15 is a diagram illustrating a method of fixing the guide unit according to embodiment 5.

Detailed Description

A mode for carrying out the present invention will be described with reference to the accompanying drawings. In the drawings, the same or corresponding portions are denoted by the same reference numerals, and overlapping description is simplified or omitted as appropriate.

Embodiment 1.

Fig. 1 is a configuration diagram of an elevator 1 according to embodiment 1.

The elevator 1 is applied to a building having a plurality of floors, for example. In a building, a hoistway 2 of an elevator 1 is provided. The hoistway 2 is a vertically long space that spans a plurality of floors. A pit 3 is provided at the bottom of the hoistway 2. Each floor of the building is provided with a landing 4. A landing doorway is provided in the landing 4. The landing doorway is an opening to the hoistway 2. The elevator 1 includes a landing door 5, a doorframe 6, a hoisting machine 7, a main rope 8, a car 9, a counterweight 10, a car buffer 11, and a counterweight buffer 12.

Landing doors 5 are provided at the landings 4 on the respective floors. The landing door 5 includes a landing door panel 13 and a landing sill 14. The landing door panel 13 is a plate-like device that divides the landing 4 and the hoistway 2 at a landing entrance. The landing sill 14 is a device for guiding the opening and closing of the door panel. The landing sill 14 is disposed at the lower end of the landing door 5. The longitudinal direction of the landing sill 14 is oriented in the left-right direction of the elevator 1. The landing sill 14 has a sill groove in the longitudinal direction.

The door frame 6 is provided at each floor landing 4. The door frame 6 surrounds the landing doorway from three directions, i.e., left, right, and above.

The hoisting machine 7 includes a motor that generates a driving force, and a sheave that is rotated by the driving force generated by the motor. The hoisting machine 7 is installed, for example, in the upper part of the hoistway 2.

The main ropes 8 are ropes that support the loads of the car 9 and the counterweight 10 in the hoistway 2. The main ropes 8 are wound around a sheave of the hoisting machine 7. The main ropes 8 support the load of the car 9 on one side of the sheave of the hoisting machine 7. The main ropes 8 support the load of the counterweight 10 on the other side of the sheave of the hoisting machine 7. In this example, both ends of the main rope 8 are fixed to an upper portion of the hoistway 2. The main ropes 8 are tensioned by a sheave of the elevator 1 such as a sheave suspended on the hoisting machine 7. In the elevator 1, a plurality of main ropes 8 may be tensioned in parallel.

The car 9 is a device that transports users of the elevator 1 between a plurality of floors by traveling in the vertical direction in the hoistway 2. The car 9 includes a car door 15 and a car sheave 16. The car door 15 includes a car door panel 17 and a door device 18. The car door 15 is provided on the front surface of the car 9. The car door panel 17 is a plate-like device that divides the inside and the outside of the car 9. The door device 18 is a device that opens and closes the car door panel 17 and the landing door panel 13 in an interlocking manner so that a user can get on and off when the car 9 stops at any floor. The door apparatus 18 is provided at an upper portion of the front surface of the car 9. The car sheave 16 is a sheave of the elevator 1 around which the main ropes 8 supporting the car 9 are wound. In this example, the car sheave 16 is provided at a lower portion of the car 9.

The counterweight 10 is a device that balances the load applied to both sides of the sheave of the hoisting machine 7 with the car 9. The counterweight 10 includes a counterweight sheave 19. The counterweight sheave 19 is a sheave of the elevator 1 around which the main rope 8 supporting the counterweight 10 is wound. In this example, the counterweight sheave 19 is provided at an upper portion of the counterweight 10.

The car buffer 11 is provided in the pit 3. The car buffer 11 is a device for alleviating a shock when the car 9 collides with the bottom of the hoistway 2. The car buffer 11 is provided below the car 9.

The counterweight buffer 12 is provided in the pit 3. The counterweight buffer 12 is a device that cushions the impact of the counterweight 10 when it collides with the bottom of the hoistway 2. The counterweight buffer 12 is disposed below the counterweight 10.

In maintenance of the elevator 1, the existing main ropes 8 may be replaced with new main ropes 8. At this time, a maintenance person who performs maintenance of the elevator 1 performs an operation of replacing the main rope 8 using a replacement device not shown in fig. 1.

Next, the structure of the exchanging device 20 will be described with reference to fig. 2.

Fig. 2 is a perspective view of the exchange device 20 according to embodiment 1.

The replacement work using the replacement device 20 is performed in a state where the car 9 is stopped at a position between the upper end and the lower end of the landing doorway of the landing 4 at an arbitrary floor where the door apparatus 18 is located. During the replacement work, the landing door panel 13 of the landing door 5 of the landing 4 is opened. During the replacement work, the car door panel 17 of the car door 15 is opened.

The exchange device 20 includes a storage unit 21, a guide unit 22, and a connection unit 23. The storage unit 21 is a unit that stores the main rope 8. The storage unit 21 stores the existing main ropes 8 after being recovered and new main ropes 8 to be replaced with the existing main ropes 8. The storage unit 21 is disposed inside the car 9. The guide unit 22 is a unit that guides the existing main rope 8 to be stored in the storage unit 21 and the newly installed main rope 8 pulled out from the storage unit 21. The guide unit 22 is disposed above the front surface of the car 9. The connection unit 23 is a portion that connects the storage unit 21 and the guide unit 22.

The guide unit 22 includes 2 protection portions 24 and a support portion 25.

Each protection portion 24 is a portion that protects the door apparatus 18 from contact with the main rope 8 in the replacement work of the main rope 8. Each protecting portion 24 guides the main rope 8 in the longitudinal direction during the replacement operation of the main rope 8. Each protection portion 24 is disposed in front of the door device 18. The one protection unit 24 is an example of the 1 st protection unit that protects the door device 18 from contact with the existing main rope 8. The longitudinal direction of the 1 st protective portion is an example of the 1 st direction. The 1 st direction is, for example, a direction from above to below the door apparatus 18. The other protection unit 24 is an example of the 2 nd protection unit that protects the door device 18 from contact with the newly installed main rope 8. The longitudinal direction of the 2 nd protecting part is an example of the 2 nd direction. The 2 nd direction is, for example, a direction from below to above of the door apparatus 18.

The support portion 25 is a portion that supports the 2 protection portions 24. The support portion 25 includes an upper support 26, a lower support 27, an upper fixing portion 28, and a lower fixing portion 29.

The upper support 26 is a portion that supports the upper end of each protector 24 so as to be slidable left and right. The lower support 27 is a portion that supports the lower end of each guard 24 so as to be slidable in the left and right direction. Since the upper end and the lower end of each protection portion 24 are supported slidably in the left-right direction, the angle formed by the 2 protection portions 24 is supported to be adjustable.

The upper fixing portion 28 is a portion fixed to the car 9. The upper fixing portion 28 is attached to the upper support 26. The upper fixing portion 28 is fixed to the car 9 above the door device 18.

The lower fixing portion 29 is a portion fixed to the landing 4. The lower fixing portion 29 is attached to the lower support 27. The lower fixing portion 29 is fixed to the landing 4 below the door device 18. The lower fixing portion 29 has an insertion portion 30. The lower fixing portion 29 is fixed by inserting the insertion portion 30 into the floor groove of the landing sill 14 from above.

Fig. 3 is a perspective view of the storage unit 21 according to embodiment 1.

The storage unit 21 includes a 1 st storage unit 31 and a 2 nd storage unit 32.

The 1 st housing portion 31 is a portion that houses the existing main rope 8a after being recovered. The 1 st housing portion 31 is, for example, a reel, a drum, or the like around which the main rope 8a is wound. Before the replacement work of the main rope 8 is performed, the 1 st storage portion 31 is in an empty state.

The 2 nd storage portion 32 is a portion that stores a newly provided main rope 8b to be replaced with an existing main rope 8 a. The 2 nd housing portion 32 is, for example, a reel, a drum, or the like around which the main rope 8b is wound. When a plurality of main ropes 8 are stretched in the elevator 1, the 2 nd accommodating portion 32 has reels or the like corresponding to the respective main ropes 8. Before the replacement operation of the main rope 8 is performed, the 2 nd accommodating portion 32 is in a state in which a newly provided main rope 8b is wound.

Fig. 4 is a perspective view of the guide unit 22 according to embodiment 1.

In this example, each guard 24 is a tray-shaped guard frame that guides the main rope 8 in the longitudinal direction.

Each guard portion 24 has side plates 33 on both sides in the width direction. The width direction is a direction perpendicular to the length direction. The width direction is a direction in which the plurality of main ropes 8 are aligned when the plurality of main ropes 8 are stretched in parallel in the elevator 1. The side plates 33 restrict the main rope 8 from wobbling in the width direction. In the side plate 33, long holes 34 are provided in the longitudinal direction so that the weight can be suppressed.

Each protector 24 has a back plate 35 on the rear surface. The normal direction of the back plate 35 is a direction perpendicular to the length direction and the width direction. The normal direction of each protection portion 24 is the normal direction of the back plate 35. The back plate 35 is a plate-like member that restricts the main rope 8 from approaching the door apparatus 18 in the normal direction. In the back plate 35, long holes 34 are provided in the longitudinal direction so that the weight can be suppressed. In this example, the long hole 34 is provided outside the center in the width direction.

Each protection portion 24 is divided in a length direction, for example, so as to be adjustable in length.

Each guard portion 24 has a pair of 1 st guide rollers 36 and a pair of 2 nd guide rollers 37 at the end of the upstream side. The pair of 1 st guide rollers 36 are disposed at the end side of the pair of 2 nd guide rollers 37. The rotation axis of each 1 st guide roller 36 is oriented in the width direction of the protection portion 24. The pair of 1 st guide rollers 36 are arranged in a line in the normal direction of the back plate 35. The rotation axis of each 2 nd guide roller 37 is directed toward the normal direction of the back plate 35. The pair of 2 nd guide rollers 37 are arranged in line in the width direction of the guard portion 24. The one 2 nd guide roller 37 is disposed close to the left side plate 33. The other 2 nd guide roller 37 is disposed close to the right side plate 33. Each guard portion 24 also has a pair of 1 st guide rollers 36 and a pair of 2 nd guide rollers 37 at the downstream end portion, as well as the upstream end portion.

Next, a fixing method of the guide means 22 and a guiding method of the main rope 8 by the guide means 22 will be described with reference to fig. 5 and 6.

Fig. 5 is a diagram illustrating a method of fixing the guide unit 22 according to embodiment 1.

Fig. 6 is a diagram illustrating a method of guiding the main rope 8 by the guide means 22 of embodiment 1.

Fig. 5 shows an upper end of the guide unit 22 as viewed from the front.

An upper cage fence 38 is provided on an outer upper surface of the cage 9 so as to enable a maintenance worker to perform work. The cage upper fence 38 is provided to surround a working space on the upper surface of the cage 9 from left and right sides and from left and right sides at the rear, for example. The upper cage barrier 38 has a column 39, a handrail 40 and a middle sill 41. The column 39 is a vertically long pillar. The handrail 40 is a horizontally long member provided at an upper portion of the cage upper fence 38. The middle cage 41 is a horizontally long member provided in the middle of the upper cage fence 38.

The upper fixing portion 28 of the guide unit 22 has a bracket 42. The bracket 42 is fixed across the left and right columns 39 of the cage upper fence 38. The bracket 42 is a portion that supports the upper support 26.

In this example, 3 main ropes 8 tensioned in parallel are replaced at the same time. The existing main rope 8a is guided by one of the protection portions 24a. The newly installed main rope 8b is guided by the other protective portion 24b.

The existing main ropes 8a are guided from above the car 9 to the inside of the car 9. The end of the guard portion 24a on the upstream side of the existing main rope 8a is the upper end. The end of the guard portion 24a on the downstream side of the existing main rope 8a is the lower end. The existing main ropes 8a are arranged forward of the back plate 35 of the protection portion 24a. The existing main ropes 8a are disposed between the left and right side plates 33 of the guard portion 24a. The existing main rope 8a passes between the pair of first guide rollers 36 aligned in the normal direction of the back plate 35 at both the upstream and downstream ends. The existing main rope 8a passes between a pair of 2 nd guide rollers 37 aligned in the width direction of the protecting portion 24a at both the upstream side and downstream side ends.

The newly installed main ropes 8a are guided from the inside of the car 9 to above the car 9. The end of the guard portion 24b on the upstream side of the newly installed main rope 8b is the lower end. The end of the guard portion 24b on the downstream side of the newly installed main rope 8b is the upper end. The newly installed main ropes 8b are disposed forward of the back plate 35 of the protection portion 24b. The newly installed main ropes 8b are disposed between the left and right side plates 33 of the guard portion 24b. The newly installed main ropes 8b pass between the pair of first guide rollers 36 aligned in the normal direction of the back plate 35 at both the upstream and downstream ends. The newly installed main rope 8b passes between a pair of 2 nd guide rollers 37 arranged in the width direction of the protecting portion 24b at both the upstream side and the downstream side ends.

When each of the protection portions 24 is disposed on the upper portion of the front surface of the car 9, the angle formed by the longitudinal directions of the protection portion 24a and the protection portion 24b is adjusted so as to extend to the left and right of the car 9 from below toward above.

In fig. 6, the upper end portion of the guide unit 22 is shown as viewed from the rear.

The existing main ropes 8a are guided from the hoistway 2 above the car 9 to the protection portion 24a so as to move from the rear side to the front side. The existing main ropes 8a are guided from the hoistway 2 above the car 9 to the protection portion 24a so as to move from the left and right end portions toward the center.

The newly installed main ropes 8b are guided from the protective portion 24b to the hoistway 2 above the car 9 so as to move from the front side to the rear side. The newly installed main ropes 8b are guided from the protecting portions 24b to the hoistway 2 above the car 9 so as to move from the left and right center sides toward the end sides.

Next, an example of a method of replacing the main rope 8 using the replacement device 20 will be described with reference to fig. 7.

Fig. 7 is a diagram illustrating an example of a method of replacing the main rope 8 by the replacement device 20 according to embodiment 1.

First, the maintenance worker installs the temporary sheave 43 in the hoistway 2. The temporarily provided sheave 43 is a sheave that guides the main rope 8 to be replaced.

Next, the maintenance person brings the storage unit 21 into the car 9. At this time, the 1 st accommodation portion 31 is in an empty state. At this time, the 2 nd accommodating portion 32 is in a state in which the newly provided main rope 8b is wound.

Next, the maintenance person adjusts the position of the car 9. In this example, the position of the car 9 is adjusted so that the door device 18 is positioned between the upper end and the lower end of the landing doorway of the uppermost landing 4. Then, the maintenance worker suspends the car 9 by, for example, the chain block 44 or the like, and holds the car 9 at the adjusted position. The maintenance person also supports the load of the counterweight 10 to the counterweight buffer 12 by, for example, placing the counterweight 10 on the counterweight buffer 12. Thereby, the load applied to the car 9 and the counterweight 10 of the existing main rope 8a is released. Then, the maintenance person opens the landing door panel 13 of the landing door 5 on the uppermost floor. Further, the maintenance person opens the car door panel 17 of the car door 15.

Next, the maintenance person installs the guide unit 22. The maintenance worker fixes the upper fixing portion 28 to the car 9. The maintenance worker fixes the lower fixing portion 29 to the landing 4. At this time, the maintenance worker adjusts the length of the 2 protection parts 24 in the longitudinal direction to be longer than the height of the door equipment 18. The maintenance worker adjusts the angle formed by the longitudinal direction of the 2 protection portions 24 so as to extend to the left and right of the car 9 as the angle is directed upward. The maintenance worker connects the storage unit 21 and the guide unit 22 by the connection unit 23.

Next, the serviceman removes one end of the existing main rope 8a from the upper portion of the hoistway 2. The maintenance worker winds the existing main rope 8a detached from the upper portion of the hoistway 2 around the temporary installation sheave 43. The maintenance person passes the end of the existing main rope 8a detached from the upper portion of the hoistway 2 through one of the protection portions 24a. The maintenance worker pulls the end of the existing main rope 8a passed through the protecting portion 24a into the 1 st housing portion 31.

Then, the maintenance person removes the other end of the existing main rope 8a from the upper portion of the hoistway 2. The maintenance worker winds the existing main rope 8a detached from the upper portion of the hoistway 2 around the temporary installation sheave 43. The maintenance person passes the end of the existing main rope 8a detached from the upper portion of the hoistway 2 through the other protective portion 24b. The maintenance worker connects the end of the existing main rope 8a passed through the protective portion 24b to the end of the newly installed main rope 8b stored in the 2 nd storage portion 32 inside the car 9, for example, to form a connection portion 45.

Then, the maintenance person operates the motor of the hoisting machine 7. The existing main ropes 8 wound around the sheave of the hoisting machine 7 are fed out by the driving force generated by the motor of the hoisting machine 7. Thus, the existing main ropes 8a are guided by the protective portions 24a and fed into the car 9 from above the car 9.

At this time, the existing main rope 8a is guided to be folded back in front of the door device 18 so as to be able to pass over the ceiling or the like of the car 9. Here, since the back plate 35 of the protection portion 24a is disposed between the existing main rope 8a and the door device 18, the door device 18 is protected from contact with the existing main rope 8 a. Since the existing main ropes 8a are guided in contact with the 1 st guide roller 36, the existing main ropes 8a can be suppressed from being twisted or the like. The existing main ropes 8a are guided from the left and right end sides to the center side above the door devices 18 so as to be able to pass around devices above the car 9 and the like. At this time, the existing main ropes 8a are guided in contact with the 2 nd guide roller 37, and therefore, the existing main ropes 8a can be suppressed from being twisted or the like.

Further, by sending out the existing main rope 8a, the newly installed main rope 8b whose end portion is connected to the existing main rope 8a as the connecting portion 45 is pulled out from the 2 nd accommodating portion 32. The protecting portion 24b guides the newly installed main rope 8b connected to the end of the existing main rope 8 a. The newly installed main rope 8 is drawn out from the inside of the car 9 to above the car 9 while being guided by the protection portion 24b.

At this time, the newly installed main rope 8b is guided to be folded back in front of the door device 18 so as to be able to pass over the ceiling or the like of the car 9. Here, since the back plate 35 of the protecting portion 24b is disposed between the newly installed main rope 8b and the door device 18, the door device 18 is protected from contact with the newly installed main rope 8b. Since the newly installed main ropes 8b are guided in contact with the 1 st guide roller 36, the occurrence of kinks and the like in the newly installed main ropes 8b can be suppressed. The newly installed main ropes 8b are guided from the left and right center sides to the end sides above the door devices 18 so as to be able to bypass devices above the car 9. At this time, since the newly installed main ropes 8b are guided in contact with the 2 nd guide roller 37, the newly installed main ropes 8b can be suppressed from being twisted or the like.

In this way, the existing main ropes 8a are collected and the newly installed main ropes 8b are installed at the same time by the driving force generated by the motor of the hoisting machine 7. Further, since the storage means 21 is disposed inside the car 9, a wide working space at the landing 4 is not required in the replacement work.

In addition, when the plurality of main ropes 8 are tensioned in parallel, the 1 st accommodating portion 31 may wind the plurality of main ropes 8 together. When the amount of the existing main rope 8a wound around the reel or the like of the 1 st storage unit 31 reaches the upper limit of the capacity of the 1 st storage unit 31, the maintenance worker may cut the existing main rope 8 a. At this time, the maintenance worker replaces the reel of the 1 st storage unit 31 with an empty reel and pulls the end of the main rope 8a after the cutting into the replaced reel. Then, the serviceman restarts the recovery of the existing main rope 8 a.

When the existing main ropes 8a are recovered, the newly installed main ropes 8b are installed over the sheave of the elevator 1. After the existing main ropes 8a are recovered, the serviceman removes the connection between the existing main ropes 8a and the end portions of the newly installed main ropes 8b. Then, the maintenance worker fixes both end portions of the newly installed main rope 8b to the upper portion of the hoistway 2. Then, the serviceman removes the connection unit 23 and the guide unit 22. Then, by removing the chain block 44 or the like, the load of the car 9 and the counterweight 10 is supported by the newly installed main ropes 8b. Then, the maintenance person removes the temporarily set sheave 43. Then, the maintenance worker collects the storage unit 21 from the inside of the car 9.

As described above, the exchange device 20 according to embodiment 1 includes the 1 st protection unit and the 2 nd protection unit. The 1 st protective part is disposed in front of the door equipment 18. The door apparatus 18 is disposed on an upper portion of a front surface of the car 9 of the elevator 1. The 1 st protective part guides the existing main rope 8 to be collected inside the car 9 from above the car 9 in the 1 st direction. The 1 st guard portion restricts the existing main rope 8 from approaching the door apparatus 18 in a normal direction perpendicular to the 1 st direction. The 2 nd protection unit is disposed in front of the door equipment 18. The 2 nd protecting portion guides the newly installed main rope 8 pulled out from the inside of the car 9 to the upper side of the car 9 in the 2 nd direction. The 2 nd protecting part restricts the newly installed main rope 8 from approaching the door equipment 18 in the normal direction perpendicular to the 2 nd direction.

The method of replacing the main rope 8 according to embodiment 1 includes a carrying-in step, a disposing step, and a replacing step. The carrying-in step is a step of bringing a newly installed main rope 8, which is replaced with an existing main rope 8, into the car 9 of the elevator 1. The placement step is a step after the carry-in step. The disposing step is a step of disposing the 1 st protective part and the 2 nd protective part in front of the door equipment 18. The replacement step is a step after the placement step. The replacement process is a process of collecting the existing main ropes 8 into the car 9 by the guide of the 1 st protective part, and drawing out and installing the newly installed main ropes 8 brought into the car 9 above the car 9 by the guide of the 2 nd protective part.

The storage unit 21 that sends out the newly installed main rope 8 and stores the existing main rope 8 is disposed inside the car 9. Therefore, a wide working space is not required at the landing 4. This enables replacement of the main ropes 8 even when a sufficient working space cannot be secured in the landing 4 of the elevator 1. The main ropes 8 are guided between the space inside the car 9 and the space above the car 9 while passing over the ceiling of the car 9. At this time, the main rope 8 is guided so as to be folded back in front of the door apparatus 18. In contrast, the 1 st and 2 nd protection parts protect the door apparatus 18 from contact with the main rope 8. Therefore, in the replacement work of the main rope 8, contamination, damage, and the like of the door apparatus 18 due to contact of the main rope 8 can be prevented. In the replacement operation, the main ropes 8 pass through a space formed by opening the car door panel 17 on the front surface of the car 9 and enter and exit the inside of the car 9. Therefore, even in the elevator 1 to which the method of replacing the main ropes 8 using the ceiling rescue opening or the like provided at the upper portion of the car 9 cannot be applied, the main ropes 8 can be replaced without requiring a large working space at the landing 4.

Further, the length of the 1 st protective part in the 1 st direction is longer than the height of the door apparatus 18. The length of the 1 st protective part in the 1 st direction can be adjusted. The length of the 2 nd protecting portion in the 2 nd direction is longer than the height of the door apparatus 18. The length of the 2 nd protecting part in the 2 nd direction can be adjusted.

Further, the arranging step includes a step of adjusting the length of the 1 st protective portion in the 1 st direction to be longer than the height of the door apparatus 18. The arranging step includes the step of adjusting the length of the 2 nd protecting portion in the 2 nd direction to be longer than the height of the door equipment 18.

Since the length of the 1 st protective part in the 1 st direction and the length of the 2 nd protective part in the 2 nd direction are longer than the height of the door apparatus 18, the door apparatus 18 can be protected over the entire height direction so as not to contact the main rope 8. Thereby, the protection of the door apparatus 18 in the replacement work of the main rope 8 becomes more reliable. Further, since the length of the 1 st protection part in the 1 st direction and the length of the 2 nd protection part in the 2 nd direction can be adjusted, the replacement device 20 can be applied to the elevators 1 of a plurality of models having different heights of the door equipment 18.

In addition, the 1 st guard has the 1 st guide roller 36. The rotation axis of the 1 st guide roller 36 is directed in the width direction of the 1 st protecting part. The width direction of the 1 st protective portion is a direction perpendicular to the 1 st direction and the normal direction of the 1 st protective portion. The 1 st guide roller 36 is guided in contact with the existing main rope 8 at the 1 st direction end of the 1 st protection portion.

In addition, the 1 st guard has the 2 nd guide roller 37. The rotation axis of the 2 nd guide roller 37 is directed to the normal direction of the 1 st protecting part. The 2 nd guide roller 37 is guided in contact with the existing main rope 8 at the 1 st direction end of the 1 st protecting portion.

In addition, the 2 nd protecting part has a 1 st guide roller 36. The rotation axis of the 1 st guide roller 36 is directed in the width direction of the 2 nd protecting part. The width direction of the 2 nd protective portion is a direction perpendicular to the 2 nd direction and the normal direction of the 2 nd protective portion. The 1 st guide roller 36 is guided in contact with the existing main rope 8 at the 2 nd direction end of the 2 nd protecting portion.

In addition, the 2 nd protecting part has a 2 nd guide roller 37. The rotation axis of the 2 nd guide roller 37 is directed to the normal direction of the 2 nd protecting part. The 2 nd guide roller 37 is guided in contact with the existing main rope 8 at the 2 nd direction end of the 2 nd protecting portion.

Since the main ropes 8 are guided by the guide rollers, the occurrence of kinks and the like can be suppressed.

The exchange device 20 further includes a support portion 25. The support portion 25 is fixed to the car 9. The support portion 25 supports the 1 st protective portion and the 2 nd protective portion. The support portion 25 is fixed to the landing 4 of the elevator 1 at a position below the door device 18.

The 1 st protective part and the 2 nd protective part are supported by the support part 25 fixed to the car 9, and therefore the positional relationship between them and the door apparatus 18 can be maintained. Therefore, the protection of the door apparatus 18 in the replacement work of the main rope 8 becomes more reliable. Further, the support portion 25 is fixed to the landing 4, and thus can more firmly receive the loads received by the 1 st protective portion and the 2 nd protective portion from the main rope 8. Thereby, the protection of the door apparatus 18 in the replacement work of the main rope 8 becomes more reliable.

The support portion 25 supports the 1 st protection portion so that an angle formed between the 1 st direction of the 1 st protection portion and the 2 nd direction of the 2 nd protection portion can be adjusted.

The arranging step includes a step of adjusting an angle formed by the 1 st direction of the 1 st protective portion and the 2 nd direction of the 2 nd protective portion so as to extend to the left and right of the car 9 from below toward above.

This guides the moving direction of the main rope 8 so as to be able to pass over the devices above the car 9.

The method of replacing the main ropes 8 according to embodiment 1 includes a connecting step between the arranging step and the replacing step. The connecting step is a step of connecting the end of the existing main rope 8 to the end of the newly installed main rope 8. In the replacement process, when the existing main rope 8 is collected into the car 9, the end portion of the newly installed main rope 8 connected to the existing main rope 8 is pulled, and the newly installed main rope 8 is pulled out above the car 9.

This allows the existing main ropes 8 to be collected and newly installed main ropes 8 to be installed at the same time. Therefore, the main rope 8 can be efficiently replaced.

In the placement step, the newly installed main ropes 8 are pulled out to above the car 9 by the driving force generated by the hoisting machine 7 of the elevator 1.

This enables, for example, the replacement work of the main rope 8 to be performed without any equipment such as an electric winch. For example, even when an additional power supply for replacing the main ropes 8 cannot be used, the main ropes 8 can be efficiently replaced.

Each protection portion 24 may be a pipe, a tube, a duct, or the like. Instead of a part or all of the plurality of 1 st guide rollers 36 and the plurality of 2 nd guide rollers 37, each of the protection portions 24 may have a sliding portion that guides the main rope 8 by sliding. The side plates 33 and the back plate 35 of each protector 24 may not have the elongated holes 34. In the exchanging device 20, the 1 st protecting part and the 2 nd protecting part may be integrally formed. The 1 st protective part may be, for example, one of the left and right sides of an integrated duct, pipe, duct, or the like disposed in front of the door device 18. The 2 nd protecting part is, for example, the other of the left and right sides of the integrated duct or the like. In this case, a partition plate or the like for preventing the existing main ropes 8 from coming into contact with the newly installed main ropes 8 may be provided between the 1 st protective part and the 2 nd protective part. Alternatively, for example, when the main ropes 8 supporting the car 9 and the main ropes 8 supporting the counterweight 10 are disposed apart from each other in the hoistway 2, a partition plate or the like may not be provided between the 1 st protective portion and the 2 nd protective portion. The normal direction of the 1 st protective part and the normal direction of the 2 nd protective part may not be parallel to each other. In the case where the 1 st protective part and the 2 nd protective part are integrally formed, the 1 st protective part and the 2 nd protective part are simultaneously disposed in front of the door equipment 18 in the disposing step.

Next, another example of a method of replacing the main rope 8 using the replacement device 20 will be described with reference to fig. 8.

Fig. 8 is a diagram illustrating another example of the replacement method of the main rope 8 by the replacement device 20 according to embodiment 1.

In this example, the hoisting machine 7 is provided at a lower portion of the hoistway 2. In the

elevator

1, 2 diverting pulleys 46 are provided. The diverting pulleys 46 are provided in an upper portion of the hoistway 2. The main ropes 8 are looped around one of the diverting sheaves 46 between the sheave of the hoisting machine 7 and the car sheave 16. The main ropes 8 are looped around the other diverting sheave 46 between the sheave of the hoisting machine 7 and the counterweight sheave 19.

In the elevator 1 of this example, the replacement operation of the main ropes 8 can be performed using the replacement device 20 similarly to the example shown in fig. 7.

Next, another example of a method of replacing the main ropes 8 using the replacement device 20 will be described with reference to fig. 9.

Fig. 9 is a diagram illustrating another example of the replacement method of the main rope 8 by the replacement device 20 according to embodiment 1.

In this example, 2:1 example of a roping type elevator 1. In the elevator 1, a machine room 47 is provided in an upper part of the hoistway 2. The hoisting machine 7 is disposed in the machine room 47. The car sheave 16 is provided on an upper portion of the car 9. The counterweight sheave 19 is provided on the upper portion of the counterweight 10. In a normal state, both ends of the main rope 8 are attached to an upper portion of the hoistway 2.

Next, another example of a method of replacing the main ropes 8 using the replacement device 20 will be described with reference to fig. 10.

Fig. 10 is a diagram illustrating another example of the method of replacing the main rope 8 by the replacement device 20 according to embodiment 1.

In this example, 1:1 example of a roping type elevator 1. In the elevator 1, a machine room 47 is provided in an upper part of the hoistway 2. The hoisting machine 7 is disposed in the machine room 47. The car 9 does not have a car sheave. The counterweight 10 does not have a counterweight sheave. In a normal state, one end of the main rope 8 is attached to the car 9. Further, the other end of the main rope 8 is attached to the counterweight 10.

Here, after adjusting the position of the car 9, the maintenance worker suspends the car 9 by, for example, the chain block 44 or the like, and holds the car 9 at the adjusted position. The maintenance person suspends the counterweight 10 by, for example, the chain block 44 or the like, and holds the counterweight 10 in the hoistway 2. Thereby, the load of the car 9 and the counterweight 10 applied to the existing main ropes 8a is released.

In the embodiments described below, points different from the examples disclosed in the other embodiments will be described in particular detail. As for the features not described in the following embodiments, any features of the examples disclosed in the other embodiments may be adopted.

Embodiment 2.

Fig. 11 is a diagram illustrating a method of fixing the guide unit 22 according to embodiment 2.

The upper fixing portion 28 of the guide unit 22 includes a fixing arm 48 and a fixing clip 49. The fixing arm 48 is a rod-like member extending from the upper support 26 to the left and right handrails 40 of the cage upper fence 38. A fixing clip 49 is provided at the front end of the fixing arm 48. The fixing clip 49 is a portion for fixing the handrail 40 of the upper cage fence 38. The upper fixing portion 28 is fixed by holding the left and right handrails 40 of the upper cage fence 38 with fixing clips 49. The upper fixing portion 28 may be fixed by holding the left and right middle sills 41 of the upper cage fence 38 with fixing clips 49.

Embodiment 3.

Fig. 12 is a diagram illustrating a method of fixing the guide unit 22 according to embodiment 3.

The support portion 25 of the guide unit 22 has a conditioning pad 50. The adjusting pad 50 is pressed against a door rail 51 of the door apparatus 18, and the door rail 51 guides the opening and closing of the car door panel 17. The support portion 25 is fixed by pressing the adjustment pad 50 against the door rail 51.

The lower fixing portion 29 of the guide unit 22 has a support portion 52. The support 52 is a rod-shaped member that can expand and contract. The support portion 52 is provided with skids 53 at both ends. The lower fixing portion 29 is fixed by supporting the support portion 52 between the left and right surfaces of the door frame 6.

Embodiment 4.

Fig. 13 and 14 are diagrams illustrating a method of fixing the guide unit 22 according to embodiment 4.

Fig. 13 shows an upper end portion of the guide unit 22 as viewed from the front.

Each protection portion 24 may include a plurality of tray-like protection frames having side plates 33, a back plate 35, a 1 st guide roller 36, and a 2 nd guide roller 37. In each protection portion 24 of this example, the protection frames are connected by a connection plate 54.

The support portion 25 includes a fixing frame 55 and a fixing clip 49. The fixing frame 55 is a frame-shaped member provided from the back plate 35 of the protective frame to an upper beam 56 on the upper portion of the car 9. The fixing clip 49 is a part that clamps the fixing frame 55 and the upper beam 56 for fixing. The upper fixing portion 28 is fixed by sandwiching the upper beam 56 and the fixing frame 55 with the fixing clip 49.

In fig. 14, an upper end portion of the door apparatus 18 is shown as viewed from the front.

The support portion 25 includes a support plate 57. The support plate 57 is disposed between, for example, the back plate 35 of each protection portion 24 and the upper end portion of the door device 18. The support plate 57 is a portion that supports at least a part of the load applied to each guard 24.

Embodiment 5.

Fig. 15 is a diagram illustrating a method of fixing the guide unit 22 according to embodiment 5.

The support portion 25 includes a support leg 58 and a fixed magnet 59. The support legs 58 are disposed between the back plate 35 of each protection portion 24 and the upper surface of the car 9, for example. The fixed magnet 59 is provided at the lower end of the support leg 58. The fixed magnet 59 is a magnet attracted to the upper surface of the car 9 by magnetic force. The support legs 58 are portions that support at least a part of the load applied to each guard 24.

Industrial applicability

The replacement method of the present invention can be applied to replacement work of a main rope of an elevator. The replacing device of the present invention can be applied to the replacing method.

Description of the reference symbols

1: an elevator; 2: a hoistway; 3: a pit; 4: a landing; 5: a landing door; 6: a door frame; 7: a traction machine; 8. 8a, 8b: a main rope; 9: a car; 10: counterweight; 11: a car buffer; 12: a counterweight buffer; 13: landing door panels; 14: landing sill; 15: a car door; 16: a car sheave; 17: a car door panel; 18: a door apparatus; 19: a counterweight sheave; 20: replacing the device; 21: a storage unit; 22: a guide unit; 23: a connection unit; 24. 24a, 24b: a protection part; 25: a support portion; 26: an upper support; 27: a lower support; 28: an upper fixing portion; 29: a lower fixing portion; 30: an insertion portion; 31: a 1 st receiving part; 32: a 2 nd accommodating part; 33: a side plate; 34: a long hole; 35: a back plate; 36: the 1 st guide roller; 37: the 2 nd guide roller; 38: a cage upper fence; 39: a column; 40: a handrail; 41: stacking in a middle stack; 42: a bracket; 43: temporarily arranging a rope wheel; 44: a chain block; 45: a connecting portion; 46: a diverting pulley; 47: a machine room; 48: a fixed arm; 49: fixing the clamp; 50: a conditioning pad; 51: a door track; 52: a support portion; 53: an anti-slip member; 54: a connecting plate; 55: a fixing frame; 56: an upper beam; 57: a support plate; 58: a support leg; 59: and fixing the magnet.

Claims

1. An elevator main rope replacement device, comprising:

a 1 st protective part which is arranged in front of a door device arranged on the upper part of the front surface of a car of an elevator, guides an existing main rope to be collected in the car from the upper part of the car along a 1 st direction, and limits the existing main rope to approach the door device in a normal direction perpendicular to the 1 st direction; and

and a 2 nd protecting portion which is disposed in front of the door device, guides a newly installed main rope drawn out from the interior of the car to the upper side of the car along a 2 nd direction, and restricts the newly installed main rope from approaching the door device in a normal direction perpendicular to the 2 nd direction.

2. Replacement device of a main rope of an elevator according to claim 1,

the length of the 1 st protective part in the 1 st direction is longer than the height of the door apparatus.

3. Replacement device of a main rope of an elevator according to claim 2,

the length of the 1 st protective part in the 1 st direction can be adjusted.

4. Replacement device of a main rope of an elevator according to any of claims 1-3,

a length of the 2 nd protecting portion in the 2 nd direction is longer than a height of the door apparatus.

5. Replacement device of a main rope of an elevator according to claim 4,

the length of the 2 nd protecting part in the 2 nd direction can be adjusted.

6. Replacement device of a main rope of an elevator according to any of claims 1 to 5,

the 1 st protection portion has a 1 st guide roller, a rotation axis of the 1 st guide roller is oriented in a width direction perpendicular to the 1 st direction and the normal direction, and the 1 st guide roller is guided by contacting the existing main rope at an end portion of the 1 st protection portion in the 1 st direction.

7. Replacement device of a main rope of an elevator according to any of claims 1 to 6,

the 1 st protection portion has a 2 nd guide roller, a rotation axis of the 2 nd guide roller is directed in a normal line direction, and the 2 nd guide roller is guided by being brought into contact with the existing main rope at an end portion of the 1 st protection portion in the 1 st direction.

8. Replacement device of a main rope of an elevator according to any of claims 1 to 7,

the 2 nd protection part has a 1 st guide roller, a rotation shaft of the 1 st guide roller faces a width direction perpendicular to the 2 nd direction and the normal direction, and the 1 st guide roller is guided by contacting the newly installed main rope at an end of the 2 nd protection part in the 2 nd direction.

9. Replacement device of a main rope of an elevator according to any of claims 1 to 8,

the 1 st protection portion has a 2 nd guide roller, a rotation axis of the 2 nd guide roller faces a normal direction, and the 2 nd guide roller is guided by contacting the newly installed main rope at an end portion of the 1 st protection portion in the 2 nd direction.

10. Replacement device of a main rope of an elevator according to any of claims 1 to 9,

the replacement device for the main rope of the elevator comprises a supporting part which is fixed on the car and supports the 1 st protecting part and the 2 nd protecting part.

11. Replacement device of a main rope of an elevator according to claim 10,

the support portion is fixed to a landing of an elevator at a position below the door device.

12. Replacement device of a main rope of an elevator according to claim 10 or 11,

the support portion supports the 1 st protection portion so that an angle formed between the 1 st direction of the 1 st protection portion and the 2 nd direction of the 2 nd protection portion can be adjusted.

13. A method of replacing a main rope of an elevator, wherein the method of replacing a main rope of an elevator comprises:

a carrying-in process, wherein a new main rope which is replaced with the existing main rope is carried into the interior of the elevator car;

a placement step of, after the carry-in step, placing a 1 st protection portion and a 2 nd protection portion in front of a door device provided on an upper portion of a front surface of the car, wherein the 1 st protection portion guides the existing main rope from above the car in a 1 st direction and restricts the existing main rope from approaching the door device in a normal direction perpendicular to the 1 st direction, and the 2 nd protection portion guides the newly provided main rope to above the car in a 2 nd direction and restricts the newly provided main rope from approaching the door device in a normal direction perpendicular to the 2 nd direction; and

and a replacement step of, after the arrangement step, recovering the existing main rope into the car by the guide of the 1 st protective part, and setting the newly set main rope brought into the car by the guide of the 2 nd protective part by pulling out the newly set main rope above the car.

14. The method of replacing a main rope of an elevator according to claim 13,

a connecting step of connecting the end portions of the existing main ropes and the end portions of the newly installed main ropes is provided between the arranging step and the replacing step,

in the replacement step, when the existing main rope is retracted into the car, an end portion of the newly installed main rope connected to the existing main rope is pulled, and the newly installed main rope is thereby pulled out to above the car.

15. The method of replacing a main rope of an elevator according to claim 14,

in the arranging step, the newly installed main ropes are pulled out to above the car by a driving force generated by a hoisting machine of the elevator.

16. The replacement method of a main rope of an elevator according to any one of claims 13 to 15,

the disposing step includes the step of adjusting a length of the 1 st protective portion in the 1 st direction to be longer than a height of the door apparatus.

17. Method of replacing the main rope of an elevator according to any of claims 13-16,

the disposing step includes the step of adjusting a length of the 2 nd protective portion in the 2 nd direction to be longer than a height of the door apparatus.

18. Method of replacing the main rope of an elevator according to any of claims 13-17,

the arranging step includes a step of adjusting an angle formed by the 1 st direction of the 1 st protective portion and the 2 nd direction of the 2 nd protective portion so as to expand to the left and right of the car from below toward above.