CN107585658B - Elevator refitting method - Google Patents
Elevator refitting method Download PDFInfo
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- CN107585658B CN107585658B CN201710545343.XA CN201710545343A CN107585658B CN 107585658 B CN107585658 B CN 107585658B CN 201710545343 A CN201710545343 A CN 201710545343A CN 107585658 B CN107585658 B CN 107585658B
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Abstract
An elevator refitting method. An elevator refitting method capable of improving the operation efficiency is obtained. The elevator refitting method comprises the following steps: an existing guide rail supporting step of detaching the existing rail base (23) and supporting the existing guide rail (22) using a guide rail supporting device (43) for elevator retrofitting; a new rail table installation step of installing a new rail table (32) after the existing rail support step; a newly installed guide rail lowermost part installing step of installing a newly installed guide rail lowermost part (311) in the hoistway (1) after the newly installed rail base installing step, and supporting the newly installed guide rail lowermost part (311) on a newly installed rail base (32); a lifting device installation step of installing a lifting device (42) in the hoistway (1) and connecting the lifting device (42) to the existing car (21); and a newly-installed guide rail remaining portion installation step of installing a newly-installed guide rail remaining portion (312) in the hoistway (1) while driving the hoisting device (42) to raise and lower the existing car (21) after the newly-installed guide rail lowermost portion installation step and the hoisting device installation step.
Description
Technical Field
The present invention relates to an elevator modernization method for modernizing an elevator and a guide rail support device for elevator modernization used in the elevator modernization method.
Background
Conventionally, there is known an elevator modernization method for modernizing an existing elevator having an existing car and existing guide rails into a new elevator having a new car and new guide rails, in which the existing car and existing guide rails are removed from a hoistway, a scaffold is erected in the hoistway, and the existing guide rails are assembled in order from the lowermost portion to the uppermost portion (for example, see patent document 1).
Patent document
Patent document 1: japanese patent laid-open publication No. 2013-241239
Disclosure of Invention
However, in order to assemble the existing guide rail to the uppermost portion, it is necessary to assemble the scaffold to the uppermost portion of the hoistway, and therefore, there is a problem in that work efficiency is low.
The invention aims to provide an elevator refitting method and a guide rail supporting device for elevator refitting, which can improve the operation efficiency.
The elevator refitting method of the invention is an elevator refitting method for refitting an existing elevator with an existing car and an existing guide rail into a newly-arranged elevator with a newly-arranged car and a newly-arranged guide rail, wherein the elevator refitting method comprises the following steps: an existing guide rail supporting step of detaching an existing rail table supporting an existing guide rail and supporting the existing guide rail using a guide rail supporting device for elevator retrofitting; a new rail table setting step of setting a new rail table for supporting the new rail after the existing rail supporting step; a newly-installed guide rail lowest part setting step of setting the lowest part of the newly-installed guide rail, that is, the lowest part of the newly-installed guide rail, in the hoistway after the newly-installed rail base setting step, and supporting the lowest part of the newly-installed guide rail on the newly-installed rail base; a lifting device installation step of installing a lifting device for lifting the existing car in the hoistway and connecting the lifting device to the existing car; and a newly-installed guide rail remaining portion installing step of installing a newly-installed guide rail remaining portion, which is a portion of the newly-installed guide rail other than the lowermost portion of the newly-installed guide rail, in the hoistway while driving the hoisting device to raise and lower the existing car, after the newly-installed guide rail lowermost portion installing step and the hoisting device installing step.
The guide rail supporting device for elevator refitting of the invention is used when an existing elevator with an existing car and an existing guide rail is refitted into a new elevator with a new car and a new guide rail, wherein the guide rail supporting device for elevator refitting comprises: a contact member that contacts a lower surface of the existing guide rail from which the existing rail base supporting the existing guide rail is removed; and a jack base which is provided on the ground of the pit and supports the contact member.
Effects of the invention
According to the elevator modernization method of the present invention, since the method includes the newly installed guide rail remaining portion installing step of installing the newly installed guide rail remaining portion in the hoistway while raising and lowering the existing car, it is no longer necessary to assemble a scaffold to the uppermost portion of the hoistway. Therefore, the working efficiency of the refitting of the elevator can be improved.
Drawings
Fig. 1 is a front view showing an elevator before being refitted by the elevator refitting method of embodiment 1 of the present invention.
Fig. 2 is a plan view showing the elevator of fig. 1.
Fig. 3 is a plan view showing a case where the existing elevator of fig. 1 is modified into a newly installed elevator.
Fig. 4 is a sectional view taken along line IV-IV of fig. 3.
Fig. 5 is a view in section along the line V-V of fig. 3.
Fig. 6 is an enlarged view showing the guide rail supporting device for elevator modernization of fig. 4.
Fig. 7 is a view showing a safety unit installed in the existing car of fig. 4.
Fig. 8 is a flow chart showing the steps of an elevator modernization method of modernizing the existing elevator of fig. 1 into a newly-set elevator.
Description of the reference symbols
1: a hoistway; 11: a pit; 21: an existing car; 22: existing guide rails; 23: the rail platform is available; 24: a hydraulic jack; 25: an emergency stop apparatus main body; 26: an emergency stop lever; 31: newly arranging a guide rail; 32: newly arranging a rail table; 41: a lifting beam; 42: a lifting device; 43: a guide rail support device for elevator refitting; 44: safety units (pull-off fall arrest devices); 311: newly arranging the lowest part of the guide rail; 312: newly arranging the rest part of the guide rail; 421: a winch; 422: a rope portion; 423: a drive section; 431: a contact member; 432: a jack base; 433: a single pipe conduit; 434: a flat plate portion; 435: a threaded rod; 436: a lifting part; 437: a handle; 438: a contact plate; 439: a barrel portion; 441: mounting a plate; 442: reel (reel); 443: a belt.
Detailed Description
Fig. 1 is a front view showing an elevator before being modernized by an elevator modernization method of embodiment 1 of the present invention, and fig. 2 is a plan view showing the elevator of fig. 1. In embodiment 1, a hydraulic elevator will be described as an example of an existing elevator before retrofitting. The existing elevator is not limited to the hydraulic elevator, and may be a machine room elevator, for example. In embodiment 1, a machine roomless elevator will be described as an example of a newly installed elevator after the modernization. The installation positions of the guide rails in the hoistway 1 are different between the existing elevator and the newly installed elevator.
The existing elevator has: an existing car 21 that ascends and descends in the hoistway 1; a pair of existing guide rails 22 provided in the hoistway 1 to guide the existing car 21; an existing rail base 23 which is provided in the pit 11 of the hoistway 1 and supports the existing rail 22; and a hydraulic jack 24 for raising and lowering the existing car 21. A cable, not shown, is provided between the existing car 21 and the hydraulic jack 24. The existing car 21 is raised and lowered in the hoistway 1 by changing the dimension of the hydraulic jack 24 in the height direction.
Fig. 3 is a plan view showing a state in which the existing elevator of fig. 1 is converted into a newly installed elevator, fig. 4 is a sectional view taken along line IV-IV of fig. 3, and fig. 5 is a sectional view taken along line V-V of fig. 3. The newly-installed elevator comprises: a newly installed car, not shown, which moves up and down in the hoistway 1; a pair of newly installed guide rails 31 installed in the hoistway 1 to guide a newly installed car; and a new rail base 32 which is provided in the pit 11 of the hoistway 1 and supports the new rail 31. The position where the newly provided rail base 32 is provided and the position where the existing rail base 23 is provided partially coincide with each other. Therefore, the existing track base 23 needs to be removed from the pit 11 before the new track base 32 is installed.
An elevator modifying apparatus used when modifying an existing elevator into a newly installed elevator, comprising: a lifting beam 41 fixed to an upper portion of the existing guide rail 22; a hoisting device 42 provided so as to straddle the hoisting beam 41 and the existing car 21; and a pair of guide rail supporting devices 43 for elevator retrofitting, which are provided in the pit 11 and support the pair of existing guide rails 22, respectively. Fig. 3 and 5 do not show the lifting beam 41 and the lifting means 42.
The lift beam 41 is arranged to extend in a direction in which the existing guide rails 22 oppose each other. In this example, the lifting beam 41 is fixed to the existing guide rail 22, but the lifting beam 41 may be fixed to the hoistway 1.
The lifting device 42 has two winches 421. Each winch 421 is supported by the lifting beam 41. Further, the winches 421 are arranged separately in the longitudinal direction of the lifting beam 41. Further, each winch 421 has: a rope portion 422; and a driving unit 423 for feeding out the rope portion 422 or winding up the rope portion 422. The rope portion 422 of each winch 421 is connected to the existing car 21. Therefore, the existing car 21 is lowered by sending the rope portion 422 from the driving portion 423, and the existing car 21 is raised by winding the rope portion 422 around the driving portion 423.
Fig. 6 is an enlarged view showing the guide rail supporting device 43 for elevator modernization of fig. 4. The guide rail support device 43 for elevator modernization includes: a contact member 431 that contacts the lower surface of the existing guide rail 22; a jack base 432 provided on the floor of the pit 11; and a single pipe conduit 433 supported by the jack base 432. The installation area of the guide rail supporting device 43 for elevator retrofitting in the pit 11 is smaller than the installation area of the existing rail bed 23 in the pit 11. In addition, the position of the pit 11 where the guide rail support device 43 for elevator retrofitting is installed does not coincide with the position of the pit 11 where the new rail base 32 is installed. Therefore, the newly installed rail base 32 can be installed in the pit 11 with the guide rail supporting device 43 for elevator retrofitting installed in the pit 11. The installation area of the guide rail supporting device 43 for elevator retrofitting in the pit 11 is set to such an extent that the existing guide rail 22 can be stably supported.
The jack base 432 has: a flat plate portion 434 placed on the floor of the pit 11; a threaded rod 435 standing on the flat plate portion 434 and having a threaded groove formed in a side surface thereof; a lift part 436 provided on the threaded rod 435 and rotated in a circumferential direction about an axial center of the threaded rod 435 to change a dimension between the lift part and the flat plate part 434; and a pair of handles 437 extending radially outward from the elevating portion 436 around the axial center of the threaded rod 435. The lifting part 436 is rotated in the circumferential direction by rotating the handle 437, and thereby the lifting part 436 is moved in the height direction with respect to the flat plate part 434.
The single tube 433 is supported by the elevating unit 436 in a state where the upper portion of the threaded rod 435 is inserted into the single tube 433 from below the single tube 433. Therefore, the single-tube tubing 433 is caused to move in the height direction together with the elevating part 436, and the movement of the single-tube tubing 433 in the lateral direction with respect to the jack base 432 is restricted.
The contact member 431 includes: a contact plate 438, an upper surface of the contact plate 438 being in contact with a lower surface of the existing guide rail 22; and a cylindrical portion 439, the cylindrical portion 439 extending downward from the contact plate 438. The lower surface of contact plate 438 contacts the upper end of single-tube conduit 433. Therefore, the contact plate 438 is moved in the height direction together with the elevating portion 436. The tube part 439 is inserted into the single-tube pipe 433 from above. Thus, the contact member 431 is restricted from moving in a lateral direction relative to the single pipe conduit 433 and the jack base 432.
The elevator modernization apparatus also has a safety unit (a traction-type fall arrest device) for emergency stopping of the existing car 21. Fig. 7 is a diagram showing a safety unit installed in the existing car 21 of fig. 4. The security unit 44 has: a mounting plate 441, the mounting plate 441 being fixed to the existing guide rail 22; a reel 442, the reel 442 being supported by the mounting plate 441; and a tape 443, a base end portion of the tape 443 being wound around the reel 442.
The safety unit 44 further includes a spring, not shown, that biases the reel 442 in a direction in which the tape 443 provided on the reel 442 is wound by the reel 442. The tape 443 is fed out from the reel 442 by pulling the tape 443 against the biasing force of the spring in a direction in which the tape 443 is fed out from the reel 442.
The reel 442 also includes a rotation preventing portion, not shown, that prevents rotation of the reel 442 when the rotational speed of the reel 442 becomes equal to or greater than a predetermined value. Therefore, when the tape 443 is pulled at a speed equal to or higher than a predetermined speed in a direction in which the tape 443 is fed from the reel 442, the feeding from the reel 442 is stopped.
Existing elevators have emergency stop devices. The emergency stop device is a slack-rope emergency stop device. The emergency stop device includes: an emergency stop device main body 25 fixed to the existing car 21 so as to be adjacent to the existing guide rail 22; and an emergency stop lever 26 that is displaced between a stop position pressed against the existing guide rail 22 and a release position separated from the existing guide rail 22. When the position of the emergency stop lever 26 is the stop position, the emergency stop lever 26 abuts against the existing guide rail 22, and the emergency stop device body 25 and the emergency stop lever 26 sandwich the existing guide rail 22. The existing car 21 is stopped by sandwiching the existing guide rail 22 between the emergency stop device main body 25 and the emergency stop lever 26. The emergency stop lever 26 is provided to be rotatable with respect to the existing car 21. The emergency stop lever 26 is displaced between the stop position and the release position by being rotated.
When the existing car 21 is stopped by sandwiching the existing guide rail 22 between the emergency stop device body 25 and the emergency stop lever 26, although a downward force acts on the existing guide rail 22, the existing guide rail 22 is supported by the guide rail support device 43 for elevator modernization, and therefore, the existing car 21 can be prevented from moving downward together with the existing guide rail 22.
The end portion of the belt 443 is coupled to the emergency stop lever 26 of the existing elevator. When the existing car 21 descends so that the rotation speed of the reel 442 becomes lower than a predetermined speed, the position of the emergency stop lever 26 becomes the release position against the urging force of the spring of the safety unit 44. On the other hand, when the existing car 21 descends so that the rotation speed of the reel 442 becomes equal to or higher than the predetermined speed, the feeding of the tape 443 from the reel 442 is stopped, and therefore the emergency stop lever 26 is displaced from the release position to the stop position by the safety unit 44. This stops the existing car 21.
Next, the procedure of an elevator modernization method for modernizing an existing elevator into a newly-installed elevator will be described. Fig. 8 is a flow chart showing the steps of an elevator modernization method of modernizing the existing elevator of fig. 1 into a newly-set elevator. First, in step S101, an existing rail support step is performed. In the existing guide rail supporting step, the existing rail base 23 is removed from the pit 11, and the existing guide rail 22 is supported by using the guide rail supporting device 43 for elevator modernization. When the existing rail base 23 is removed from the pit 11, a part of the lower end of the existing rail 22 is cut.
Then, in step S102, a new track table setting step is performed. In the new track base installation step, the new track base 32 is installed in the pit 11. Since the existing track bed 23 has been removed from the pit 11, the new track bed 32 can be easily installed in the pit 11.
Then, in step S103, a new rail lowermost portion installation step is performed. In the new guide rail lowermost portion installing step, the lowermost portion 311 of the new guide rail 31, that is, the lowermost portion 311 of the new guide rail, is installed in the hoistway 1, and the lowermost portion 311 of the new guide rail is supported by the new rail base 32. In the new-rail lowermost portion setting step, the pair of new-rail lowermost portions 311 are also centered. When the existing car 21 is stopped at the lowermost portion, the upper end portion of the lowermost portion 311 of the new guide rail is disposed below the existing car 21. In the newly-installed-rail lowermost portion installing step, since the operator cannot get on the upper portion of the existing car 21 to perform the centering of the upper end portion of the newly-installed-rail lowermost portion 311, a scaffold is built in the pit 11, and the operator gets on the scaffold to perform the centering of the upper end portion of the newly-installed-rail lowermost portion 311. Further, the operator can get on the upper part of the existing car 21 and perform centering with respect to the newly-installed rail remaining portion 312, which is a portion of the newly-installed rail 31 other than the newly-installed rail lowermost portion 311.
Then, in step S104, a lifter setting process is performed. In the hoisting device installation step, the hoisting beam 41 and the hoisting device 42 are installed in the hoistway 1, and the hoisting device 42 is connected to the existing car 21.
Then, in step S105, a traction type fall arrest device installation step is performed. In the traction type fall arrest device process, the safety unit 44 is installed in the hoistway 1, and the belt 443 is connected to the emergency stop lever 26 of the existing car 21.
The respective steps of the lifter installation step and the fall arrest device installation step are not limited to this timing, and may be performed before the existing rail support step, between the existing rail support step and the new rail base installation step, or between the new rail base installation step and the new rail lowermost installation step, for example. The lifting device installation step and the traction-type fall arrest device installation step are not limited to this order, and the lifting device installation step may be performed after the traction-type fall arrest device installation step.
Then, in step S106, a hydraulic jack removal process is performed. In the hydraulic jack removal step, the hydraulic jack 24, the existing wiring, and the like are removed from the hoistway 1 while the hoisting device 42 is driven to raise and lower the existing car 21.
Then, in step S107, a newly-installed rail remaining portion installing step is performed. In the newly installed guide rail surplus portion installation step, the newly installed guide rail surplus portion 312 is installed in the hoistway 1 while the hoisting device 42 is driven to raise and lower the existing car 21.
The hydraulic jack removal step and the new guide rail remaining portion installation step are not limited to this order, and the hydraulic jack removal step may be performed after the new guide rail remaining portion installation step.
Then, in step S108, a new car installation step is performed. In the newly installed car installation step, the existing car 21 is moved to the pit 11, the existing car 21 is removed from the hoistway 1, and the newly installed car is installed in the hoistway 1. In the newly installed car installation step, a counterweight, a rope, a hoisting machine, and the like are also installed in the hoistway 1.
Then, in step S109, an existing rail removal step is performed. In the existing guide rail removing step, the existing guide rail 22 is removed from the hoistway 1 while the newly installed car is lifted and lowered. According to the above, the flow of the elevator modernization method ends.
As described above, the elevator modernization method according to embodiment 1 of the present invention includes: an existing guide rail supporting step of detaching the existing rail base 23 and supporting the existing guide rail 22 using the guide rail supporting device 43 for elevator retrofitting; a new rail table installation step of installing a new rail table 32 after the existing rail support step; a newly installed guide rail lowermost portion installing step of installing a newly installed guide rail lowermost portion 311 in the hoistway 1 after the newly installed rail base installing step, and supporting the newly installed guide rail lowermost portion 311 on the newly installed rail base 32; a hoisting device installation step of installing the hoisting device 42 in the hoistway 1 and connecting the hoisting device 42 to the existing car 21; and a newly-installed guide rail remaining portion installing step of installing the newly-installed guide rail remaining portion 312 in the hoistway 1 while driving the hoisting device 42 to raise and lower the existing car 21 after the newly-installed guide rail lowermost portion installing step and the hoisting device installing step, and therefore, it is not necessary to assemble a scaffold up to the uppermost portion of the hoistway 1. Therefore, the working efficiency of the refitting of the elevator can be improved.
Further, the elevator modernization method includes a newly installed car installation step of removing the existing car 21 from the hoistway 1 and installing the newly installed car in the hoistway 1 after the newly installed guide rail remaining portion installation step, and therefore, the newly installed car 1 can be assembled in the hoistway 1 in a state where the existing car 21 is not present in the hoistway 1. This makes it possible to easily install a new car in the hoistway 1.
Further, this elevator modernization method has an existing guide rail removal step in which the existing guide rails 22 are removed from the hoistway 1 while the newly installed car is raised and lowered, after the newly installed car installation step, so that the existing guide rails 22 can be removed from the hoistway 1 without assembling a scaffold.
In addition, the elevator modernization method further includes a traction type falling prevention device installation step of installing the safety unit 44 having the reel 442 and the belt 443 wound around the reel 442 in the hoistway 1 and connecting the belt 443 to the emergency stop lever 26 of the existing car 21 before the newly installed guide rail remaining portion installation step, so that the position of the emergency stop lever 26 can be shifted from the release position to the stop position by the safety unit 44 when the existing car 21 falls in a state where the existing car 21 is lifted by driving the hoisting device 42, thereby emergently stopping the existing car 21.
Further, the guide rail supporting device 43 for elevator modernization according to embodiment 1 of the present invention includes: a contact member 431 that contacts the lower surface of the existing guide rail 22 from which the existing rail base 23 supporting the existing guide rail 22 is removed; and a jack base 432 that is provided on the floor of the pit 11 and supports the contact member 431, so that the newly installed guide rail remaining portion 312 can be installed in the hoistway 1 while the existing car 21 is lifted and lowered by driving the hoisting device 42. Thus, it is no longer necessary to assemble the scaffolding up to the uppermost part of the hoistway 1. As a result, the work efficiency in modifying the elevator can be improved.
In addition, although the above-described embodiment 1 describes the elevator modernization method in which the existing guide rail removing step is performed after the newly installed car installing step and the existing guide rail 22 is removed from the hoistway 1 while the newly installed car is raised and lowered, the following elevator modernization method is also possible: an existing guide rail removing step is performed before the new car installing step, and in the existing guide rail removing step, the existing guide rails 22 are removed from the hoistway 1 while the existing car is raised and lowered. In this case, the existing rail removal step is also performed after the rail remaining portion installation step is newly performed.
Claims (5)
1. An elevator refitting method, which is an elevator refitting method for refitting an existing elevator with an existing car and existing guide rails into a newly-arranged elevator with a newly-arranged car and newly-arranged guide rails, wherein the elevator refitting method comprises the following steps:
an existing guide rail supporting step of detaching an existing rail bed that supports the existing guide rail and supporting the existing guide rail using an elevator-retrofit guide rail supporting apparatus;
a new rail table setting step of setting a new rail table for supporting the new rail after the existing rail supporting step;
a newly-installed guide rail lowermost portion installing step of installing, after the newly-installed rail base installing step, a lowermost portion of the newly-installed guide rail, that is, a lowermost portion of the newly-installed guide rail in the hoistway, and supporting the lowermost portion of the newly-installed guide rail on the newly-installed rail base;
a hoisting device installation step of installing a hoisting device for raising and lowering the existing car in the hoistway, and connecting the hoisting device to the existing car; and
and a newly-installed guide rail remaining portion installing step of installing a newly-installed guide rail remaining portion, which is a portion of the newly-installed guide rail other than the lowermost portion of the newly-installed guide rail, in the hoistway while driving the hoisting device to raise and lower the existing car, after the newly-installed guide rail lowermost portion installing step and the hoisting device installing step.
2. The elevator modernization method of claim 1,
the elevator refitting method further comprises a newly-installed car installing procedure after the newly-installed guide rail remaining part installing procedure, wherein in the newly-installed car installing procedure, the existing car is detached from the hoistway, and the newly-installed car is installed in the hoistway.
3. The elevator modernization method of claim 2, wherein,
the elevator refitting method further includes an existing guide rail removing step of removing the existing guide rail from the hoistway while raising and lowering the newly installed car, after the newly installed car installing step.
4. The elevator modernization method of claim 1,
the elevator modernization method further includes an existing guide rail removal step of removing the existing guide rail from the hoistway while raising and lowering the existing car after the newly installed guide rail remaining portion installation step.
5. The elevator modernization method of any of claims 1 to 4,
the elevator refitting method further comprises a traction type falling prevention device setting procedure before the newly-arranged guide rail remaining part setting procedure, wherein in the traction type falling prevention device setting procedure, a traction type falling prevention device with a reel and a belt wound on the reel is arranged in the hoistway, and the belt is connected with an emergency stop rod of the existing car.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2016135911A JP6250107B1 (en) | 2016-07-08 | 2016-07-08 | Elevator repair method and elevator repair guide rail support device |
| JP2016-135911 | 2016-07-08 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107585658A CN107585658A (en) | 2018-01-16 |
| CN107585658B true CN107585658B (en) | 2020-02-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710545343.XA Active CN107585658B (en) | 2016-07-08 | 2017-07-06 | Elevator refitting method |
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| Country | Link |
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| JP (1) | JP6250107B1 (en) |
| CN (1) | CN107585658B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108328456B (en) * | 2017-11-24 | 2019-12-20 | 北京国网富达科技发展有限责任公司 | Guide rail for elevator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000143121A (en) * | 1998-11-05 | 2000-05-23 | Mitsubishi Electric Corp | Guide rail fixing device for elevator |
| CN101734533A (en) * | 2008-11-12 | 2010-06-16 | 三菱电机大楼技术服务株式会社 | Renewal method of hydraulic elevator and rope type elevator renewed by said method |
| CN103237750A (en) * | 2010-10-15 | 2013-08-07 | 通力股份公司 | Method for modernizing an elevator |
| CN105026298A (en) * | 2013-03-04 | 2015-11-04 | 三菱电机株式会社 | Elevator renovation method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1111822A (en) * | 1997-06-18 | 1999-01-19 | Hitachi Building Syst Co Ltd | Guide rail installing method for elevator |
| JP2002265165A (en) * | 2001-03-09 | 2002-09-18 | Hitachi Building Systems Co Ltd | Renewal construction method for elevator |
| JP2011068458A (en) * | 2009-09-25 | 2011-04-07 | Mitsubishi Electric Corp | Rail suspending device of elevator |
-
2016
- 2016-07-08 JP JP2016135911A patent/JP6250107B1/en active Active
-
2017
- 2017-07-06 CN CN201710545343.XA patent/CN107585658B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000143121A (en) * | 1998-11-05 | 2000-05-23 | Mitsubishi Electric Corp | Guide rail fixing device for elevator |
| CN101734533A (en) * | 2008-11-12 | 2010-06-16 | 三菱电机大楼技术服务株式会社 | Renewal method of hydraulic elevator and rope type elevator renewed by said method |
| CN103237750A (en) * | 2010-10-15 | 2013-08-07 | 通力股份公司 | Method for modernizing an elevator |
| CN105026298A (en) * | 2013-03-04 | 2015-11-04 | 三菱电机株式会社 | Elevator renovation method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107585658A (en) | 2018-01-16 |
| JP2018002465A (en) | 2018-01-11 |
| JP6250107B1 (en) | 2017-12-20 |
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Address after: Tokyo, Japan Patentee after: Mitsubishi Electric Building Solutions Co.,Ltd. Address before: Tokyo, Japan Patentee before: MITSUBISHI ELECTRIC BUILDING TECHNO-SERVICE Co.,Ltd. |