CN115812065B

CN115812065B - Device for replacing main rope of elevator and method for replacing main rope of elevator

Info

Publication number: CN115812065B
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: 2023-07-18
Anticipated expiration: 2040-07-10
Also published as: JP7207613B2; WO2022009411A1; CN115812065A; JPWO2022009411A1

Abstract

Provided are a replacement device and a replacement method capable of replacing a main rope even when a sufficient working space cannot be ensured in a landing of an elevator. 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 device (18). A door device (18) is provided at an upper part of the front surface of the car (9) of the elevator (1). The 1 st protection part guides an existing main rope (8) to be recovered in the interior of the car (9) from above the car (9) along the 1 st direction. The 1 st protection part limits the existing main rope (8) to approach the door device (18) in the normal direction perpendicular to the 1 st direction. The 2 nd protection part is arranged in front of the door device (18). The 2 nd protection part guides a new main rope (8) pulled out from the inside of the car (9) to the upper part of the car (9) along the 2 nd direction. The 2 nd protection part limits the access of the newly-arranged main rope (8) to the door device (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 a main rope replacement device for an elevator and a main rope replacement method for an elevator.

Background

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

Prior art literature

Patent literature

Patent document 1: japanese patent laid-open 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 new main rope is wound are disposed at a landing of an elevator. Therefore, if a sufficient working space cannot be secured in the landing of the elevator, the main rope cannot be replaced by this replacement method.

The present invention has been made to solve such problems. The invention provides a replacement device and a replacement method capable of replacing a main rope even if 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 protection unit which is disposed in front of a door device provided on the upper part of the front surface of the elevator car, guides an existing main rope to be collected inside the elevator car from above the elevator car along the 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 a 2 nd protection unit which is disposed in front of the door device, guides the newly installed main rope pulled out from the inside 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 the normal direction perpendicular to the 2 nd direction.

The main rope replacement method of the elevator of the invention comprises the following steps: a carrying-in step of bringing a new main rope, which is replaced with an existing main rope, into the interior of the car of the elevator; an arrangement step of arranging a 1 st protection unit and a 2 nd protection unit in front of a door device provided on an upper portion of a front surface of a car after the carry-in step, wherein the 1 st protection unit guides an 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 unit guides a newly-installed main rope to above the car in 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; and a replacement step of, after the placement step, recovering the existing main rope into the interior of the car by guiding the 1 st protection part, and pulling out the newly installed main rope brought into the interior of the car to the upper side of the car by guiding the 2 nd protection part.

Effects of the invention

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

Drawings

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

Detailed Description

The mode for carrying out the 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 repetitive description thereof will be appropriately simplified or omitted.

Embodiment 1.

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

The elevator 1 is applied to, for example, a building having a plurality of floors. In a building, a hoistway 2 of an elevator 1 is provided. The hoistway 2 is a vertically long space extending across a plurality of floors. A pit 3 is provided at the bottom of the hoistway 2. A landing 4 is provided on each floor of the building. The landing 4 is provided with a landing entrance. Landing doorway is an opening to the hoistway 2. The elevator 1 includes a landing door 5, a door frame 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 landing 4 of each floor. The landing door 5 includes a landing door plate 13 and a landing sill 14. The landing door panel 13 is a plate-like device that partitions the landing 4 and the hoistway 2 at the 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 a lower end portion 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 along the length.

The door frame 6 is provided at the landing 4 of each floor. The door frame 6 is a frame surrounding the landing entrance from three directions, i.e., left, right, and upward.

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

The main ropes 8 are ropes supporting a load of the car 9 and the counterweight 10 in the hoistway 2. The main rope 8 is wound around a sheave of the hoisting machine 7. The main rope 8 supports 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 the upper portion of the hoistway 2. The main rope 8 is stretched by a sheave of the elevator 1 such as a sheave of the hoisting machine 7. In the elevator 1, a plurality of main ropes 8 may be stretched in parallel.

The car 9 is a device that transports a user 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 is provided with a car door panel 17 and a door apparatus 18. The car door 15 is provided on the front surface of the car 9. The car door 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 a manner that a user can ride on and off when the car 9 stops at an arbitrary floor. A door apparatus 18 is provided at an upper portion of the front surface of the car 9. The car sheave 16 is a sheave around which the main rope 8 supporting the car 9 is wound in the elevator 1. In this example, the car sheave 16 is provided at a lower portion of the car 9.

The counterweight 10 is a device for balancing the load applied to both sides of the sheave of the hoisting machine 7 with respect to 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 ropes 8 supporting the counterweight 10 are 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 reducing the impact 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 for buffering the impact when the counterweight 10 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 rope 8 may be replaced with a new main rope 8. At this time, a maintenance person who performs maintenance of the elevator 1 performs replacement work of the main rope 8 using a replacement device not shown in fig. 1.

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

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

The replacement operation 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 entrance of the landing 4 of any floor so that the door apparatus 18 is positioned. During the replacement operation, the landing door panel 13 of the landing door 5 of the landing 4 is opened. During the replacement operation, the car door panel 17 of the car door 15 is opened.

The replacement 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 recovered existing main rope 8 and a new main rope 8 to be replaced with the existing main rope 8. The storage unit 21 is disposed inside the car 9. The guide unit 22 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 at an upper portion of the front surface of the car 9. The connection unit 23 is a portion connecting the storage unit 21 and the guide unit 22.

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

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

The support portion 25 is a portion that supports 2 guard 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 portion of each protection portion 24 so as to be slidable laterally. The lower support 27 supports the lower end portion of each protection portion 24 so as to be slidable laterally. Since the upper end portion and the lower end portion of each of the protection portions 24 are supported slidably in the left-right direction, the angle formed by the 2 protection portions 24 is supported so as to be adjustable.

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

The lower fixing portion 29 is a portion fixed to the landing 4. The lower fixing portion 29 is mounted to the lower support 27. The lower fixing portion 29 is fixed to the landing 4 below the door apparatus 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 sill groove of the landing sill 14 from above.

Fig. 3 is a perspective view of the housing unit 21 of embodiment 1.

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

The 1 st storage portion 31 is a portion for storing the recovered existing main rope 8 a. The 1 st storage unit 31 is a reel, a spool, a drum, or the like around which the main rope 8a is wound, for example. Before the replacement operation of the main rope 8, the 1 st housing 31 is empty.

The 2 nd housing portion 32 is a portion for housing a new main rope 8b to be replaced with the existing main rope 8 a. The 2 nd storage portion 32 is, for example, a reel, a spool, 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 storage portion 32 has reels or the like corresponding to the respective main ropes 8. Before the replacement work of the main rope 8, the 2 nd storage unit 32 is in a state where a new main rope 8b is wound.

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

In this example, each of the protection portions 24 is a tray-like protection frame that guides the main rope 8 in the longitudinal direction.

Each of the protection portions 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 in a case where the plurality of main ropes 8 are stretched in parallel in the elevator 1. The side plates 33 restrict the shake in the width direction of the main rope 8. In the side plate 33, a long hole 34 in the longitudinal direction is provided so that the weight can be suppressed.

Each of the protecting portions 24 has a back plate 35 on the rear surface. The normal direction of the back plate 35 is a direction perpendicular to the longitudinal 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, a long hole 34 in the longitudinal direction is provided so that the weight can be suppressed. In this example, the long hole 34 is provided outside the center in the width direction.

The respective protecting portions 24 are divided in the longitudinal direction, for example, so as to be adjustable in length.

Each of the protecting portions 24 has a pair of 1 st guide rollers 36 and a pair of 2 nd guide rollers 37 at the upstream-side end. The pair of 1 st guide rollers 36 is disposed on 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 protecting portion 24. The 1 st guide rollers 36 are arranged in the normal direction of the back plate 35. The rotation axis of each 2 nd guide roller 37 is oriented in the normal direction of the back plate 35. The pair of 2 nd guide rollers 37 are arranged in the width direction of the protecting portion 24. One of the 2 nd guide rollers 37 is disposed near the left side plate 33. The other 2 nd guide roller 37 is disposed near the right side plate 33. The respective protecting portions 24 also have a pair of 1 st guide rollers 36 and a pair of 2 nd guide rollers 37 at the downstream end portion similarly to the upstream end portion.

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

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

Fig. 6 is a diagram showing a guiding method of the main rope 8 by the guiding unit 22 of embodiment 1.

In fig. 5, an upper end portion of the guide unit 22 is shown as viewed from the front.

An upper surface of the outside of the car 9 is provided with an upper car fence 38 so that maintenance personnel can perform work. The car upper fence 38 is provided, for example, to surround the work space on the upper surface of the car 9 from the left and right and the rear left and right. The car upper fence 38 has a post 39, an armrest 40 and a middle stack 41. The column 39 is a vertically long column. The handrail 40 is a horizontally long member provided at the upper portion of the upper car fence 38. The middle stack 41 is a horizontally long member provided in the middle of the upper car fence 38.

The upper fixing portion 28 of the guide unit 22 has a bracket 42. Brackets 42 are fixed across the left and right posts 39 of the upper car rail 38. The bracket 42 is a portion that supports the upper support 26.

In this example, the 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 24 a. The newly provided main rope 8b is guided by the other protector 24 b.

The existing main rope 8a is guided from above the car 9 to the inside of the car 9. The upstream end of the existing main rope 8a in the protection portion 24a is an upper end. The end of the protection portion 24a on the downstream side of the existing main rope 8a is the lower end. The existing main rope 8a is disposed in front of the back plate 35 of the protection portion 24 a. The existing main rope 8a is disposed between the left and right side plates 33 of the protection portion 24 a. The existing main rope 8a passes between a pair of 1 st guide rollers 36 arranged in the normal direction of the back plate 35 at both the upstream side and downstream side ends. The existing main rope 8a passes between a pair of 2 nd guide rollers 37 arranged in the width direction of the protecting portion 24a at both the upstream side and downstream side ends.

The newly provided main rope 8a is guided from the inside of the car 9 to above the car 9. The upstream end of the newly provided main rope 8b in the protection portion 24b is a lower end. The end of the protection portion 24b on the downstream side of the newly-installed main rope 8b is an upper end. The newly provided main rope 8b is disposed in front of the back plate 35 of the protection portion 24 b. The newly provided main rope 8b is disposed between the left and right side plates 33 of the protection portion 24 b. The newly provided main rope 8b passes between a pair of 1 st guide rollers 36 arranged in the normal direction of the back plate 35 at both the upstream side and downstream side ends. The newly-installed main rope 8b passes between a pair of 2 nd guide rollers 37 arranged in the width direction of the protection portion 24b at both the upstream side and the downstream side ends.

When the respective protection portions 24 are disposed on the upper portion of the front surface of the car 9, the angles of the protection portions 24a and 24b in the longitudinal direction are adjusted so as to expand from the lower side toward the upper side to the left and right sides of the car 9.

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

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

The new main rope 8b is guided from the protection portion 24b to the hoistway 2 above the car 9 so as to move from the front side to the rear side. The newly provided main rope 8b is guided from the protection portion 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 replacement method for the main rope 8 using the replacement device 20 will be described with reference to fig. 7.

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

First, a maintenance person installs the temporary installation sheave 43 in the hoistway 2. The temporary setting sheave 43 is a sheave that guides the main rope 8 to be replaced.

Next, the maintenance personnel brings the storage unit 21 into the interior of the car 9. At this time, the 1 st housing portion 31 is in an empty state. At this time, the 2 nd housing portion 32 is in a state where the new 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 to a position such that the door device 18 is located between the upper end and the lower end of the landing entrance of the uppermost landing 4. Then, the maintenance person hangs the car 9, for example, with the chain block 44 or the like, thereby holding the car 9 in the adjusted position. The maintenance person mounts the counterweight 10 on the counterweight buffer 12, for example, to thereby support the load of 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. The maintenance personnel then open the landing door panel 13 of the uppermost landing door 5. In addition, the maintenance personnel open the car door panel 17 of the car door 15.

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

Next, the maintenance personnel detach one end portion of the existing main rope 8a from the upper portion of the hoistway 2. The maintenance person 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 person pulls the end of the existing main rope 8a passing through the protection portion 24a into the 1 st housing portion 31.

Then, the maintenance personnel detach the other end portion of the existing main rope 8a from the upper portion of the hoistway 2. The maintenance person 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 protection portion 24b. The maintenance person connects the end of the existing main rope 8a passing through the protection portion 24b to the end of the new 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 rope 8 wound around the sheave of the hoisting machine 7 is fed out by the driving force generated by the motor of the hoisting machine 7. Thus, the existing main rope 8a is guided by the protection portion 24a and sent into the interior of 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 around the ceiling of the car 9 or the like. Here, since the back plate 35 of the protection portion 24a is disposed between the existing main rope 8a and the door apparatus 18, the door apparatus 18 is protected from contact with the existing main rope 8 a. Since the existing main rope 8a is guided in contact with the 1 st guide roller 36, occurrence of kinking or the like of the existing main rope 8a can be suppressed. The existing main rope 8a is guided from the left and right end portions to the center side above the door device 18 so as to be able to bypass the devices and the like on the car 9. At this time, the existing main rope 8a is guided in contact with the 2 nd guide roller 37, and therefore, occurrence of kinking or the like of the existing main rope 8a can be suppressed.

Further, by feeding the existing main rope 8a, the new main rope 8b whose end is connected to the existing main rope 8a as the connecting portion 45 is pulled out from the 2 nd housing portion 32. The protection portion 24b guides a new main rope 8b connected to an end of the existing main rope 8 a. The newly installed main rope 8 is pulled out from the inside of the car 9 to above the car 9 by the protection portion 24 b.

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

In this way, the existing main rope 8a is recovered and the newly installed main rope 8b is installed simultaneously by the driving force generated by the motor of the hoisting machine 7. Further, since the storage unit 21 is disposed inside the car 9, a wide work space at the landing 4 is not required in the replacement work.

In the case where the plurality of main ropes 8 are stretched in parallel, the 1 st housing portion 31 may wind the plurality of main ropes 8 at once. Further, when the amount of the existing main rope 8a wound around the reel or the like of the 1 st housing portion 31 reaches the upper limit of the capacity of the 1 st housing portion 31, the maintenance personnel may cut the existing main rope 8 a. At this time, the maintenance personnel replace the reel of the 1 st housing 31 with an empty reel, and pull the end of the cut main rope 8a into the replaced reel. Then, the maintenance person resumes the recovery of the existing main rope 8 a.

When the recovery of the existing main rope 8a is completed, the new main rope 8b is installed across the sheave of the elevator 1. After the recovery of the existing main rope 8a is completed, the maintenance personnel remove the connection of the existing main rope 8a to the end of the newly-installed main rope 8b. Then, the maintenance personnel fix both ends of the newly installed main rope 8b to the upper portion of the hoistway 2. Then, the maintenance person removes the connection unit 23 and the guide unit 22. Then, the load of the car 9 and the counterweight 10 is supported by the newly provided main ropes 8b by removing the chain block 44 or the like. Then, the maintenance person removes the temporary setting sheave 43. Then, the maintenance personnel collect the storage unit 21 from the inside of the car 9.

As described above, the replacement device 20 according to embodiment 1 includes the 1 st protection unit and the 2 nd protection unit. The 1 st protection portion is disposed in front of the door apparatus 18. The door apparatus 18 is provided at an upper portion of the front surface of the car 9 of the elevator 1. The 1 st protection part guides the existing main rope 8 to be recovered in the interior of the car 9 from above the car 9 along the 1 st direction. The 1 st protection portion restricts the existing main rope 8 from approaching the door apparatus 18 in the normal direction perpendicular to the 1 st direction. The 2 nd protection portion is disposed in front of the door apparatus 18. The 2 nd protection portion guides the new 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 protection portion restricts the access of the newly-installed main rope 8 to the door apparatus 18 in the normal direction perpendicular to the 2 nd direction.

The replacement method of the main rope 8 according to embodiment 1 includes a carry-in step, an arrangement step, and a replacement step. The loading step is a step of bringing a new main rope 8, which is replaced with the existing main rope 8, into the interior of the car 9 of the elevator 1. The disposing step is a step subsequent to the loading step. The disposing step is a step of disposing the 1 st and 2 nd protecting portions in front of the door device 18. The replacement step is a step subsequent to the placement step. The replacement step is a step of collecting the existing main rope 8 into the car 9 by the guidance of the 1 st protection part, and pulling out the newly installed main rope 8 carried into the car 9 to the upper side of the car 9 by the guidance of the 2 nd protection part.

The storage unit 21 that feeds 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. Thus, even when a sufficient working space cannot be secured in the landing 4 of the elevator 1, the main rope 8 can be replaced. The main rope 8 is guided between the space inside the car 9 and the space above the car 9 by passing around the ceiling of the car 9 or the like. At this time, the main rope 8 is guided in a manner folded back in front of the door apparatus 18. For this, the 1 st and 2 nd protecting portions protect the door device 18 from contact with the main rope 8. Therefore, during the replacement work of the main rope 8, the door apparatus 18 can be prevented from being stained, damaged, or the like due to contact of the main rope 8. In addition, during the replacement operation, the main rope 8 passes through a space formed by the opening of the car door panel 17 on the front surface of the car 9 to enter and exit the interior of the car 9. Therefore, even in the elevator 1 to which the replacement method using the main rope 8 provided in the ceiling rescue opening or the like in the upper portion of the car 9 cannot be applied, the replacement of the main rope 8 can be performed without requiring a wide working space at the landing 4.

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

The disposing step includes a step of adjusting the length of the 1 st protection portion in the 1 st direction to be longer than the height of the door device 18. The disposing step includes a step of adjusting the length of the 2 nd protection portion in the 2 nd direction to be longer than the height of the door device 18.

Since the length of the 1 st protection portion in the 1 st direction and the length of the 2 nd protection portion in the 2 nd direction are longer than the height of the door apparatus 18, the door apparatus 18 can be protected from contact with the main rope 8 over the entire height direction. Thereby, the protection of the door apparatus 18 during the replacement work of the main rope 8 becomes more reliable. Further, since the length of the 1 st protection portion in the 1 st direction and the length of the 2 nd protection portion in the 2 nd direction can be adjusted, the replacement device 20 can be applied to a plurality of types of elevators 1 having different heights of the door apparatus 18.

The 1 st protection portion has a 1 st guide roller 36. The rotation axis of the 1 st guide roller 36 is oriented in the width direction of the 1 st guard portion. The width direction of the 1 st protection portion is a direction perpendicular to the 1 st direction and the normal direction of the 1 st protection 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.

The 1 st protection section has a 2 nd guide roller 37. The rotation axis of the 2 nd guide roller 37 is oriented in the normal direction of the 1 st guard portion. 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 protection portion.

The 2 nd protector has a 1 st guide roller 36. The rotation axis of the 1 st guide roller 36 is oriented in the width direction of the 2 nd protector. The width direction of the 2 nd guard portion is a direction perpendicular to the 2 nd direction and the normal direction of the 2 nd guard portion. The 1 st guide roller 36 is guided in contact with the existing main rope 8 at the end of the 2 nd protection portion in the 2 nd direction.

The 2 nd protector has a 2 nd guide roller 37. The rotation axis of the 2 nd guide roller 37 is oriented in the normal direction of the 2 nd protector. The 2 nd guide roller 37 is guided in contact with the existing main rope 8 at the end of the 2 nd protection portion in the 2 nd direction.

Since the main rope 8 is guided by the guide roller, occurrence of kinks or the like can be suppressed.

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

The 1 st and 2 nd protection portions are supported by the support portion 25 fixed to the car 9, so that the positional relationship between them and the door apparatus 18 can be maintained. Therefore, the protection of the door apparatus 18 during the replacement work of the main rope 8 becomes more reliable. Further, the support portion 25 is fixed to the landing 4, so that the load received from the main rope 8 by the 1 st and 2 nd protecting portions can be more firmly received. Thereby, the protection of the door apparatus 18 during the replacement work of the main rope 8 becomes more reliable.

The support portion 25 is supported so that an angle 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 disposing step includes a step of adjusting an angle between the 1 st direction of the 1 st protection portion and the 2 nd direction of the 2 nd protection portion to extend from the lower side to the upper side to the left and right of the car 9.

Thereby, the movement direction of the main rope 8 is guided so as to be able to bypass the equipment and the like above the car 9.

The replacement method of the main rope 8 according to embodiment 1 includes a connection step between the placement step and the replacement 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 step, when the existing main rope 8 is recovered into the car 9, the end of the newly provided main rope 8 connected to the existing main rope 8 is pulled, and the newly provided main rope 8 is pulled out above the car 9.

This allows the existing main rope 8 to be recovered and the new main rope 8 to be installed at the same time. Therefore, the replacement work of the main rope 8 can be efficiently performed.

In the arrangement step, the new main rope 8 is pulled out above the car 9 by the driving force generated by the hoisting machine 7 of the elevator 1.

This makes it possible to perform replacement work of the main rope 8 without bringing in equipment such as an electric winch, for example. For example, even when an additional power supply for the replacement operation of the main rope 8 cannot be used, the replacement operation of the main rope 8 can be efficiently performed.

The respective protecting portions 24 may be pipes, tubes, or ducts. Each of the protecting portions 24 may have a sliding portion that guides the main rope 8 by sliding, instead of some or all of the plurality of 1 st guide rollers 36 and the plurality of 2 nd guide rollers 37. The side plate 33 and the back plate 35 of each protection portion 24 may not have the long hole 34. In the replacing device 20, the 1 st protection portion and the 2 nd protection portion may be integrally formed. The 1 st protection part may be, for example, a left and right side of an integrated pipe, tube, duct, or the like disposed in front of the door apparatus 18. The 2 nd protection portion is, for example, the other side of the integrated pipe or the like. In this case, a spacer or the like may be provided between the 1 st and 2 nd protection portions to prevent the existing main rope 8 from contacting the newly provided main rope 8. Alternatively, for example, in a case where the main rope 8 supporting the car 9 and the main rope 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 and 2 nd protection portions. The normal direction of the 1 st protection portion and the normal direction of the 2 nd protection portion may not be parallel to each other. In the case where the 1 st protection portion and the 2 nd protection portion are integrally formed, the 1 st protection portion and the 2 nd protection portion are simultaneously arranged in front of the door apparatus 18 in the arrangement process.

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

Fig. 8 is a diagram showing 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 in the lower portion of the hoistway 2. In the elevator 1, 2 diverting pulleys 46 are provided. Each diverting sheave 46 is provided at an upper portion of the hoistway 2. The main rope 8 is wound around one diverting sheave 46 between the sheave of the hoisting machine 7 and the car sheave 16. The main rope 8 is wound 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 rope 8 can be performed by using the replacement device 20 in the same manner as in the example shown in fig. 7.

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

Fig. 9 is a diagram showing 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 elevator 1. In the elevator 1, a machine room 47 is provided in an upper portion of the hoistway 2. The hoisting machine 7 is disposed in the machine room 47. The car sheave 16 is provided at an upper portion of the car 9. The counterweight sheave 19 is provided at an upper portion of the counterweight 10. In normal operation, both ends of the main rope 8 are attached to the upper portion of the hoistway 2.

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

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

In this example, 1:1 example of a roping elevator 1. In the elevator 1, a machine room 47 is provided in an upper portion of the hoistway 2. The hoisting machine 7 is disposed in the machine room 47. The car 9 has no car sheave. The counterweight 10 does not have a counterweight sheave. In normal operation, one end of the main rope 8 is attached to the car 9. The other end of the main rope 8 is attached to the counterweight 10.

Here, after the maintenance person adjusts the position of the car 9, the maintenance person suspends the car 9 by, for example, a chain block 44 or the like, thereby holding the car 9 at the adjusted position. Further, the maintenance person suspends the counterweight 10 with, for example, the chain block 44 or the like, thereby holding the counterweight 10 in the hoistway 2. Thereby, the load applied to the car 9 and the counterweight 10 of the existing main rope 8a is released.

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

Embodiment 2.

Fig. 11 is a diagram showing 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 upper car 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 fence 38 on the car. The upper fixing portion 28 is fixed by sandwiching the left and right handrails 40 of the upper car fence 38 with fixing clips 49. The upper fixing portion 28 may be fixed by sandwiching the left and right middle stacks 41 of the upper car fence 38 with the fixing clips 49.

Embodiment 3.

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

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

The lower fixing portion 29 of the guide unit 22 has a supporting portion 52. The support portion 52 is a rod-like member that can expand and contract. The support portion 52 is provided with anti-slip members 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 showing a method of fixing the guide unit 22 according to embodiment 4.

In fig. 13, an upper end portion of the guide unit 22 is shown as viewed from the front.

Each of the protection portions 24 may include a plurality of tray-shaped protection frames each having a side plate 33, a back plate 35, a 1 st guide roller 36, and a 2 nd guide roller 37. In each of the protection portions 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-like member provided from the back plate 35 of the protection frame to the upper beam 56 at the upper part of the car 9. The fixing clip 49 is a portion for fixing the fixing frame 55 and the upper beam 56 by sandwiching them. 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 and the upper end portion of the door apparatus 18 of each protection portion 24. The support plate 57 is a portion that supports at least a part of the load applied to each protection portion 24.

Embodiment 5.

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

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

Industrial applicability

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

Description of the reference numerals

1: an elevator; 2: a hoistway; 3: a pit; 4: a landing; 5: landing door; 6: a door frame; 7: a traction machine; 8. 8a, 8b: a main rope; 9: a car; 10: a counterweight; 11: a car buffer; 12: a counterweight buffer; 13: landing door plate; 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 section; 26: an upper support; 27: a lower support; 28: an upper fixing part; 29: a lower fixing part; 30: an insertion section; 31: a 1 st storage unit; 32: a 2 nd storage unit; 33: a side plate; 34: a long hole; 35: a back plate; 36: a 1 st guide roller; 37: a 2 nd guide roller; 38: a fence on the lift car; 39: a column; 40: an armrest; 41: middle stack; 42: a bracket; 43: temporarily setting a rope wheel; 44: chain blocks; 45: a connection part; 46: a diverting pulley; 47: a machine room; 48: a fixed arm; 49: a fixing clip; 50: an adjustment pad; 51: a door track; 52: a support part; 53: an anti-slip member; 54: a connecting plate; 55: a fixed frame; 56: a girder is arranged; 57: a support plate; 58: a support leg; 59: and fixing the magnet.

Claims

1. A main rope replacement device for an elevator, wherein the main rope replacement device for an elevator comprises:

a 1 st protection unit which is disposed in front of a door device provided on an upper part of a front surface of an elevator car, guides an existing main rope to be collected inside the elevator car from above the elevator 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

a 2 nd protection unit which is disposed in front of the door device, guides a newly installed main rope pulled out from the inside of the car to the upper side of the car in 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 length of the 1 st protection part in the 1 st direction is longer than the height of the door apparatus and is adjustable.

2. The replacement device for the main rope of an elevator according to claim 1, wherein,

the length of the 2 nd protection part in the 2 nd direction is longer than the height of the door apparatus and is adjustable.

3. The replacement device for the main rope of an elevator according to claim 1 or 2, wherein,

The replacement device for the main rope of the elevator is provided with a support part which is fixed to the car and supports the 1 st protection part and the 2 nd protection part.

4. The replacement device for the main rope of an elevator according to claim 3, wherein,

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

5. The replacement device for the main rope of an elevator according to claim 3, wherein,

the support portion supports the 1 st protection portion so as to be able to adjust an angle formed by the 1 st direction of the 1 st protection portion and the 2 nd direction of the 2 nd protection portion.

6. The replacement device for the main rope of an elevator according to claim 1 or 2, wherein,

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

7. The replacement device for the main rope of an elevator according to claim 1 or 2, wherein,

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

8. The replacement device for the main rope of an elevator according to claim 1 or 2, wherein,

the 2 nd protection portion has a 1 st guide roller, a rotation axis of the 1 st guide roller faces a width direction perpendicular to the 2 nd direction and a normal direction, and the 1 st guide roller is guided in contact with the newly-installed main rope at an end portion of the 2 nd protection portion in the 2 nd direction.

9. The replacement device for the main rope of an elevator according to claim 1 or 2, wherein,

the 1 st protection portion has a 2 nd guide roller, the rotation axis of the 2 nd guide roller is directed in the normal direction, and the 2 nd guide roller is guided in contact with the newly-installed main rope at the end portion of the 1 st protection portion in the 2 nd direction.

10. A main rope replacement device for an elevator, wherein the main rope replacement device for an elevator comprises:

11. The replacement device for the main rope of an elevator according to claim 10, wherein,

12. The replacement device for the main rope of an elevator according to claim 11, wherein,

13. The replacement device for the main rope of an elevator according to claim 11 or 12, wherein,

14. The replacement device for the main rope of an elevator according to any one of claims 10 to 12, wherein,

15. The replacement device for the main rope of an elevator according to any one of claims 10 to 12, wherein,

16. The replacement device for the main rope of an elevator according to any one of claims 10 to 12, wherein,

17. The replacement device for the main rope of an elevator according to any one of claims 10 to 12, wherein,

18. A main rope replacement device for an elevator, wherein the main rope replacement device for an elevator comprises:

a 1 st protection unit which is disposed in front of a door device provided on an upper part of a front surface of an elevator car, guides an existing main rope to be collected inside the elevator car from above the elevator 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;

a 2 nd protection unit which is disposed in front of the door device, guides a newly-installed main rope pulled out from the inside of the car to above the car in 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; and

a support part fixed to the car and supporting the 1 st protection part and the 2 nd protection part,

19. The replacement device for a main rope of an elevator according to claim 18, wherein,

20. The replacement device for the main rope of an elevator according to claim 18 or 19, wherein,

21. The replacement device for the main rope of an elevator according to claim 18 or 19, wherein,

22. The replacement device for the main rope of an elevator according to claim 18 or 19, wherein,

23. The replacement device for the main rope of an elevator according to claim 18 or 19, wherein,

24. A main rope replacement device for an elevator, wherein the main rope replacement device for an elevator comprises:

25. The replacement device for a main rope of an elevator according to claim 24, wherein,

26. The replacement device for the main rope of an elevator according to claim 24 or 25, wherein,

27. The replacement device for the main rope of an elevator according to claim 24 or 25, wherein,

28. The replacement device for the main rope of an elevator according to claim 24 or 25, wherein,

29. 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 step of bringing a new main rope, which is replaced with an existing main rope, into the interior of the car of the elevator;

an arrangement step of arranging a 1 st protection unit and a 2 nd protection unit in front of a door device provided on an upper portion of a front surface of the car after the carry-in step, wherein the 1 st protection unit 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 unit guides the newly-installed main rope to above the car in 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;

a connecting step of connecting an end of the existing main rope to an end of the newly-installed main rope after the disposing step; and

A replacement step of, after the connection step, recovering the existing main rope into the car by guiding the 1 st protection part, and setting the new main rope brought into the car by guiding the 2 nd protection part to be pulled out to the upper side of the car,

in the replacement step, when the existing main rope is recovered into the car, an end portion of the new main rope connected to the existing main rope is pulled, and the new main rope is pulled out to above the car.

30. The replacement method of a main rope of an elevator according to claim 29, wherein,

in the disposing step, the newly installed main rope is pulled out to the upper side of the car by a driving force generated by a hoisting machine of the elevator.

31. The replacement method of the main rope of an elevator according to claim 29 or 30, wherein,

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

32. The replacement method of the main rope of an elevator according to claim 29 or 30, wherein,

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

33. The replacement method of the main rope of an elevator according to claim 29 or 30, wherein,

the disposing step includes a step of adjusting 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 to extend from the lower side to the upper side in the lateral direction of the car.

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

an arrangement step of arranging a 1 st protection unit and a 2 nd protection unit in front of a door device provided on an upper portion of a front surface of the car after the carry-in step, wherein the 1 st protection unit 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 unit guides the newly-installed main rope to above the car in 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; and

A replacement step of, after the placement step, recovering the existing main rope into the car by guiding the 1 st protection part, and setting the new main rope brought into the car by guiding the 2 nd protection part to be pulled out to the upper side of the car,

35. The replacement method of a main rope of an elevator according to claim 34, wherein,

36. The replacement method of a main rope of an elevator according to claim 34 or 35, wherein,

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

38. The replacement method of a main rope of an elevator according to claim 37, wherein,

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