CN110312669B - Elevator repairing device - Google Patents
Elevator repairing device Download PDFInfo
- Publication number
- CN110312669B CN110312669B CN201780081375.7A CN201780081375A CN110312669B CN 110312669 B CN110312669 B CN 110312669B CN 201780081375 A CN201780081375 A CN 201780081375A CN 110312669 B CN110312669 B CN 110312669B
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- sheave
- groove
- shape
- repairing
- elevator
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/04—Driving gear ; Details thereof, e.g. seals
- B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
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- Engineering & Computer Science (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Lift-Guide Devices, And Elevator Ropes And Cables (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Cage And Drive Apparatuses For Elevators (AREA)
Abstract
In a repairing device of an elevator, which completes repairing in a short time without repairing by electroplating, a 3D printer is composed of the following parts: a storage device for storing the set shape data of the rope pulley groove; a shape sensor that measures a shape of the sheave groove; an injection machine which injects a repairing agent into the sheave groove; and a control device for comparing the shape data set in the storage device with the data measured by the shape sensor, thereby controlling the amount of the repairing agent ejected from the injection machine.
Description
Technical Field
The present invention relates to a repair device for an elevator, and more particularly, to a repair device for wear of a sheave groove of an elevator.
Background
Grooves of the sheave (hereinafter referred to as sheave grooves) are worn due to sliding between the elevator ropes (ropes) and the sheave that raises and lowers the elevator car by means of the ropes. A plurality of sheave grooves are formed in the sheave, and abrasion may concentrate on a specific sheave groove to cause an abrasion step with another sheave groove. If this wear level difference occurs, the fluctuation in the rope tension increases, and the rope tension may deviate from the rope tension assumed in design.
In order to solve this problem, conventionally, the groove is re-cut on site to eliminate the wear step, but the re-cutting of the groove has the following problem.
The ropes need to be detached from the elevator for a long time, and the elevator needs to be stopped for a long time.
Since the regrooving depth has a limit, if a wear level difference of a certain depth or more occurs, the sheave needs to be replaced.
The effective diameter of the sheave is reduced by re-cutting, and therefore there is a fear of accelerating rope damage.
In contrast, in order to repair only the worn portions of the deflector sheave and the sheave on site, there are the following elevator deflector sheave and sheave repair devices: a deflector sheave disassembled from an existing elevator is supported substantially vertically in a rotatable manner on a rotating shaft of a support device installed at an appropriate place on site, and a portion of the deflector sheave requiring repair is thickened by a portable plating device carried in while the deflector sheave is rotated by a motor via the rotating shaft and a disc (see, for example, patent document 1).
Documents of the prior art
Patent document 1: japanese laid-open patent publication No. H09-40312
Disclosure of Invention
Problems to be solved by the invention
However, in the above-mentioned patent document 1, since the repair is performed by electroplating, there is a limit to the thickness of the repair, and there is a problem that the repair of the increased thickness of about 100 μm requires about 30 minutes.
The present invention has been made to solve the above problems, and an object of the present invention is to provide a repairing apparatus for an elevator, which completes the repair in a short time without performing the repair by plating.
Means for solving the problems
In order to achieve the above object, an elevator repairing apparatus according to the present invention includes: a storage device for storing the set shape data of the rope pulley groove; a shape sensor that measures a shape of the sheave groove; an injection machine which injects a repairing agent into the sheave groove; and a control device for comparing the shape data set in the storage device with the data measured by the shape sensor, thereby controlling the amount of the repairing agent ejected from the injection machine.
Effects of the invention
The present invention is configured to include: a storage device for storing the set shape data of the rope pulley groove; a shape sensor that measures a shape of the sheave groove; an injection machine which injects a repairing agent into the sheave groove; and a controller for comparing the shape data set in the storage device with the data measured by the shape sensor to control the amount of the repairing agent ejected from the injection machine, so that the repairing by electroplating is not performed, and the difference between the ideal sheave groove shape and the current sheave groove shape is known regardless of the presence or absence of the sheave, and the sheave groove can be repaired by the correct ejection amount of the repairing agent.
Drawings
Fig. 1 is a schematic configuration diagram of an elevator repair apparatus according to embodiment 1 of the present invention.
Fig. 2 is a side view showing a state when a sheave groove repaired by the present invention is cleaned.
Fig. 3 is a side view showing a state when the shape of a sheave groove repaired by the present invention is measured.
Fig. 4 is a side view showing a state when a restoration agent is applied to a sheave groove restored by the present invention.
Fig. 5 is a side view showing an example of a state after the sheave groove repaired by the present invention is repaired.
Fig. 6 is a side view showing a special shape of a sheave groove repaired by the present invention.
Fig. 7 is a side view showing another example of a state after the sheave groove repaired by the present invention is repaired.
Fig. 8 is a schematic structural view of an elevator repair apparatus according to embodiment 2 of the present invention.
Fig. 9 is a schematic configuration diagram of an elevator repair apparatus according to embodiment 3 of the present invention.
Fig. 10 is a schematic structural view of an elevator repair apparatus according to embodiment 4 of the present invention.
Fig. 11 is a flowchart showing a control algorithm of the repairing apparatus of the elevator shown in fig. 10.
Detailed Description
Hereinafter, various embodiments of the elevator repairing apparatus according to the present invention will be described based on the above-described drawings.
Fig. 1 schematically shows an elevator repairing apparatus according to embodiment 1. In this state, the rope is detached from the sheave 1 of the elevator. However, as described later, even with the rope, there is no problem. The sheave 1 is referred to as a drive sheave, a deflector sheave, or a pulley of a hoisting machine of an elevator or a hoisting machine of a crane, and as is well known, a plurality of rope grooves, i.e., sheave grooves 20 are formed in the circumferential surface thereof, and the rope is wound around the sheave grooves 20 and rotated on a shaft extending in the vertical direction of the paper.
The repair device for repairing the sheave groove 20 includes: a repairing agent injector 6 configured to be able to inject a repairing agent 7 into a sheave groove 20 attached to a drive machine (not shown); a shape sensor 4 that arranges a shape obtaining surface facing the bottom 2 of the sheave groove 20; a cleaner 3 shaped to enter the sheave groove 20; and a three-dimensional movable table 5 that fixes the repair agent injector 6, the shape sensor 4, and the cleaning machine 3.
The repair device is connected to a control device 8, and the control device 8 instructs the injector 6 of the necessary amount of the repair agent 7 to be injected by comparing the two-dimensional shape data obtained from the sheave groove 20 by the shape sensor 4 with the ideal sheave groove shape data stored in advance in a storage device 30 connected to the control device 8.
The control device 8 is also connected to the drive machine of the sheave 1, and indicates to the drive machine the rotation amount necessary for adjusting the application surface of the repairing agent 7. Further, a rotation amount signal is received from the drive machine of the sheave 1, and the drive machine is stopped at a set position.
With such a configuration, the sheave groove 20 can be repaired without detaching the sheave 1 from the drive machine.
In addition, a 3D printer is formed by the shape sensor 4, the repair agent injector 6, the control device 8, and the storage device 30.
Next, a method of repairing the sheave groove in the present embodiment will be described.
First, the repairing apparatus is arranged such that the injection machine 6, the shape sensor 4, and the cleaning machine 3 are parallel to a first tank to be repaired. That is, as shown in fig. 2, the cleaning machine 3 is disposed at a position where the groove bottom 2 can be cleaned, and the sheave 1 is rotated while the cleaning machine 3 is operated, thereby removing the sheave surface deposits 9 such as oil and dirt.
Thereafter, as shown in fig. 3, the shape sensor 4 obtains shape data of the cleaned groove bottom 2 over the entire circumference. The control device 8 calculates the difference between the ideal sheave groove shape stored in the storage device 30, that is, the data of the completely new shape 10a and the data of the sheave groove shape 10b before or during the restoration from the shape sensor 4, and determines the amount of the restoration agent 7 to be injected into the sheave groove 20, as shown in fig. 4. The rotation of the sheave 1, the acquisition of the shape data of the groove bottom 2, and the application of the repairing agent 7 are continued until the shape of the groove bottom 2 becomes the above-described ideal shape.
When there is partial wear in the circumferential direction of the sheave 1, the shape 10b before restoration is brought close to the completely new shape 10a by intensively injecting the restoration agent 7 from the injection machine 6, and the circumferential unevenness is restored. After the sheave groove 20 is repaired, the movable table 5 is moved to the sheave groove 20 to be processed next, and the sheave groove 20 is repaired in the same manner.
The above steps are performed for all the sheave grooves 20 to be repaired. When a plurality of injection machines 6, shape sensors 4, and cleaning machines 3 can be mounted, or when 2 or more grooves can be operated at a time, a plurality of sheave grooves 20 can be operated in one operation.
The sheave groove shape after restoration targeted in the present invention does not necessarily have a completely new groove shape 10a, as in the shape 10c shown in fig. 5. Examples of the groove shape 10c after the repair are other than the completely new state.
As a first example, as shown in fig. 5, a case where the groove is repaired until there is no step difference between the shape 10a and the shape 10c of the sheave groove 20, that is, a case where another groove is repaired until the groove has a shape with the smallest wear amount is exemplified.
A second example is illustrated with reference to fig. 6. Fig. 6 shows a shape 10b of a portion where the sheave 1 is partially worn significantly in the circumferential direction of a specific sheave groove, as viewed from the side. At this time, only the partially worn shape 10b is repaired, whereby the depth of the groove in the circumferential direction can be made uniform.
As a third example, as shown in fig. 7, the restoration agent 7 is used to restore the sheave groove shape 10d to another sheave groove shape different from the completely new sheave groove shape 10 a.
< effects of embodiment 1 >
The essential object of the present invention is to restore the wear of the sheave groove 20 to a normal state, and in the apparatus for restoring the sheave groove 20 shown in embodiment 1, the sheave groove 20 can be restored to a normal state by restoring the groove with the restoring agent injector 6 without cutting the sheave groove 20.
In general, the cutting depth of the sheave 1 has a limit in equipment structure, and cutting the sheave groove 20 reduces the radius of curvature of the rope wound in the sheave groove 20, which may result in a shortened life of the rope. The present repairing apparatus can repair the sheave groove 20 without being affected by the above-described adverse effect due to the groove cutting.
In the sheave groove restoration device according to embodiment 1, since the shape data of the sheave groove 20 is obtained by the shape sensor 4, an ideal, i.e., a difference between the completely new sheave groove shape 10a and the current sheave groove shape 10b can be found as shown in fig. 3, and thus an accurate injection amount of the restoration agent in the restoration agent injection machine 6 can be determined.
In the sheave groove restoration device shown in embodiment 1, the cleaning machine 3 cleans the sheave groove before the groove shape data is obtained by the shape sensor 4 or before the sheave groove is restored by the restoration agent injector 6, and therefore, it is possible to remove the dirt and oil components transferred from the rope 11, and to obtain the shape data of the sheave groove 20 with high accuracy and restore the sheave groove 20.
As described in embodiment 1, by not limiting the shape 10c of the sheave groove 20 after the restoration to the completely new groove shape 10a, an appropriate restoration method can be selected according to the state of the sheave groove 20 or the situation of the site where the elevator is used.
For example, in the case where a long repair period cannot be secured due to a building in which an elevator is used, it is effective to preferentially repair a specific sheave groove 20 in which wear is concentrated.
In addition, when equipment of the elevator is updated, there may be a case where the shape of the sheave groove must be changed according to a change in the system configuration, and in such a case, usually, the sheave 1 itself must be replaced. In particular, when the traction machine sheave is to be replaced, the traction machine itself often needs to be replaced.
In such a case, by repairing the sheave groove 20 by the method of the present invention to change the groove shape, it is no longer necessary to replace the sheave 1 or the hoisting machine itself, and necessary parts can be reduced in the refitting of the elevator.
In embodiment 1 described above, although it is assumed that the rope 11 is detached from the sheave 1 and repaired, in the present embodiment, the sheave groove 20 is repaired while the rope 11 is wound, and such a method is described below with reference to fig. 8.
In the present embodiment, the restoration device for the sheave groove 20 is disposed on the side of the sheave 1 on which the rope 11 is not wound, so as not to contact the rope 11. With such a configuration, even in a state where the rope 11 is wound around the sheave 1, the sheave groove can be repaired while removing the dust and oil discharged from the rope 11.
The control device 8 can control the time zone for sheave groove restoration according to the operating condition of the elevator by interlocking the elevator with the control means of the restoration device.
That is, since the restoration agent is injected while the sheave is rotated, the sheave groove can be restored over the entire circumference of the sheave even if the rope is wound.
< effects of embodiment 2 >
In the sheave groove restoration device according to embodiment 2, the following effects are obtained in addition to the effects described in embodiment 1.
Since the sheave groove 20 can be repaired without detaching the rope 11 from the sheave 1, the rope 11 does not need to be detached when repairing the sheave groove 20, and the elevator does not need to be stopped for a long time. In addition, generally, the detached rope 11 is not reused but replaced with a new product arranged separately, but in the present embodiment, the replacement work of the rope 11 is not necessary, and therefore the load on the worker is reduced. Further, the arrangement of the replacement rope 11 is not required, and therefore, the facility cost required for the repair of the sheave groove 20 can be reduced.
In the present embodiment, since the repair time period of the sheave groove 20 can be controlled according to the operating condition of the elevator by interlocking the elevator with the control means of the repair apparatus, the normal service use state of the elevator and the repair state of the sheave groove 20 can be switched according to the operating condition of the elevator assumed in advance.
Further, according to the application of the present embodiment, if the present restoration device is always installed in an elevator, it is possible to select a slot restoration mode suitable for the use mode of the elevator. As an example of the groove repairing mode, the following example is given.
In an elevator that is not used at night, normal service is stopped only at night, and the pit is automatically repaired at night.
When the service of the elevator cannot be stopped, the service of the elevator is maintained, and the slot is repaired a small amount at a time during operation.
When the repair device is not installed at all, the time period for performing the repair by the repair device may be determined in advance based on the judgment of the elevator maintenance person or the elevator manager, and the operation may be performed in the same manner as described above.
In general, in elevator design, a certain degree of wear of sheave grooves is expected and designed, but in the research stage, the number of ropes may be increased for the purpose of reducing the groove wear. In such a case, as described above, the number of ropes of the elevator can be reduced as compared with the conventional one on the premise that the present restoring apparatus is installed in the elevator to restore the groove and the elevator is used. If the number of ropes can be reduced, the degree of freedom in arranging other devices in the machine room or the hoistway increases, and in addition, the number of devices used decreases, so that the cost of the elevator equipment can be reduced.
In embodiment 2 described above, it is assumed that the ropes 11 are wound around the sheave 1 having the drive mechanism and repaired, but in the present embodiment, as shown in fig. 9, the sheave 1 described above is used as the drive sheave 1a, and the driven sheave 1b around which the ropes 11 are wound is repaired by adding the driven sheave 1b to the sheave 1a and 1b, as compared to embodiment 2 shown in fig. 8.
In the present embodiment, the sheave groove restoration device is disposed on the driven sheave 1b on the side where the rope 11 is not wound, so that the shape sensor 4 and the injector 6 constituting the restoration device do not contact the rope 11. Then, since the driven sheave 1b is rotated by rotating the driving sheave 1a with the ropes 11 wound, the driven sheave 1b can be rotated to a position to be repaired.
In fig. 9, although the case where the signal of the rotation amount is output from the drive sheave 1a is described, a rotation angle detection device may be attached to the driven sheave 1b, and the rotation amount may be directly output from the driven sheave 1 b.
With such a configuration, even in a state where the ropes 11 are wound around the drive sheave 1a and the driven sheave 1b, the sheave grooves of the driven sheave 1b can be repaired while removing the dust and oil discharged from the ropes 11.
< effects of embodiment 3 >
In the sheave groove restoration device according to embodiment 3, the effect described in embodiment 2 can be obtained even when the driven sheave 1b, which does not have a drive mechanism, is to be restored.
In embodiments 1 to 3 described above, the shape of the sheave groove 20 is formed by applying the repairing agent 7 to the sheave groove 20, but in the present embodiment, as shown in fig. 10, a cutting tool 12 is added, and finishing is performed in addition to embodiments 1 to 3 described above.
The flow chart of fig. 11 shows a repair procedure in the present embodiment. After cleaning the groove bottom 2, the shape of the groove bottom 2 is obtained (step S1), the necessary repair depth of each sheave groove 20 is calculated (step S2), the movable table 5 is moved to the groove to be machined with respect to the groove bottom 2 (step S3), and the metal powder, i.e., the repair agent 7, is injected to all the sheave grooves 20 (step S4), as in the methods described in embodiments 1 and 2. The cutting tool 12 is disposed perpendicularly to the bottom of the groove, and the groove is formed by profiling by moving the cutting tool 12 in the center direction of the sheave 1 while rotating the sheave 1. Thereafter, the hoisting machine is rotated (step S5), the sheave 1 is repaired over the entire circumference (step S6), and the repair is completed when the shape data obtained by the shape sensor 4 for all sheave grooves becomes the set shape data (step S7).
The cutting tool 12 may be integrated with the present prosthetic device as shown in fig. 10, or may be separately attached.
In the above-described steps, the method of administering the amount of the repairing agent 7 determined by the comparison calculation between the two-dimensional shape data obtained from the shape sensor 4 and the shape 10b of the groove after the repair is shown as in embodiments 1 to 3, but in the present embodiment, the repairing agent 7 may be administered so as to be thicker than the wall thickness or the surface thickness of the shape 10b of the groove after the repair.
< effect of embodiment 4 >
In the sheave groove restoration device according to embodiment 4, the groove shape can be finished with high accuracy because the finishing by cutting is performed in addition to the methods according to embodiments 1 to 3 described above. As shown in embodiment 4, when the cutting process is performed after the repair agent 7 is injected so as to be thicker than the wall thickness or surface thickness of the groove shape 10b after the repair, the repair accuracy by the injection machine 6 can be low, and therefore, the time can be shortened compared with embodiments 1 to 3 in which the groove is molded only by injecting the repair agent 7.
That is, since the sheave groove is roughly formed by the 3D printer and then the sheave groove is finished with high accuracy by the cutting machine, time can be shortened as compared with a case where the high accuracy groove is formed only by the 3D printer.
Description of the reference symbols
1: a sheave; 1 a: a drive sheave; 1 b: a driven sheave; 2: the bottom of the tank; 3: a cleaning machine; 4: a shape sensor; 5: a movable table; 6: an injection machine; 7: a repair agent; 8: a control device; 9: rope wheel surface attachments; 10 a: a brand new slot shape; 10 b: the shape of the groove before repair; 10 c: the shape of the repaired groove; 11: a rope; 12: a cutting tool; 20: a sheave groove; 30: and a storage device.
Claims (6)
1. An elevator repairing device is provided with:
a storage device for storing the set shape data of the rope pulley groove;
a shape sensor that measures a shape of the sheave groove;
an injection machine which injects a repairing agent into the sheave groove; and
a control device for comparing the shape data set in the storage device with the data measured by the shape sensor to control the amount of the repairing agent ejected from the injection machine,
the injection machine is provided at a position where the repair agent is injected from a side where the rope is not wound toward the sheave groove, as viewed from a rotation center of the sheave having the sheave groove.
2. The repair apparatus of an elevator according to claim 1,
the control device is connected to a drive machine that rotates the sheave, receives a rotation amount signal from the drive machine, and instructs the drive machine about a rotation amount necessary for adjusting the application surface of the repair agent to stop the sheave at a set position.
3. The repair apparatus of an elevator according to claim 2,
and a cleaning machine further comprising the sheave groove in front of the surface on which the repairing agent is applied.
4. The repair apparatus of an elevator according to claim 2,
the sheave includes a drive sheave and a driven sheave around which the rope is wound in common, the drive machine is connected to the drive sheave,
the shape sensor and the injection machine are provided for the driven sheave,
the control device controls the amount of the repairing agent ejected from the injection machine by comparing the shape data set in the storage device with the data measured by the shape sensor, and instructs a drive machine that rotates the drive sheave to a rotation amount necessary for adjusting the application surface of the repairing agent, thereby stopping the drive sheave at a set position.
5. The repair apparatus of an elevator according to claim 2,
the repairing agent feeding surface is further provided with a cutting machine for finishing the thickened part caused by the repairing agent.
6. The repairing apparatus of an elevator according to any one of claims 1 to 5,
the storage device, the shape sensor, the injection machine, and the control device constitute a 3D printer.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/006599 WO2018154658A1 (en) | 2017-02-22 | 2017-02-22 | Elevator repairing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110312669A CN110312669A (en) | 2019-10-08 |
| CN110312669B true CN110312669B (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201780081375.7A Active CN110312669B (en) | 2017-02-22 | 2017-02-22 | Elevator repairing device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP6727396B2 (en) |
| CN (1) | CN110312669B (en) |
| WO (1) | WO2018154658A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11078048B2 (en) * | 2019-01-29 | 2021-08-03 | Otis Elevator Company | Elevator sheave cleaner |
| DE102019121947B3 (en) | 2019-08-14 | 2020-12-10 | Sauer Gmbh | DEVICE AND METHOD FOR REPAIR OF COMPONENTS BY ADDITIVE MANUFACTURING |
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| JP4844183B2 (en) * | 2006-03-10 | 2011-12-28 | 三菱電機ビルテクノサービス株式会社 | Elevator rope groove processing equipment |
| JP4835365B2 (en) * | 2006-10-04 | 2011-12-14 | 三菱電機ビルテクノサービス株式会社 | Elevator rope groove processing apparatus and processing method thereof |
| JP5391658B2 (en) * | 2008-11-18 | 2014-01-15 | 株式会社Ｉｈｉ | Defect repair method and defect repair system |
| CN105813792A (en) * | 2013-12-12 | 2016-07-27 | 奥的斯电梯公司 | Device and method for repairing a rotatable object |
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2017
- 2017-02-22 JP JP2019500912A patent/JP6727396B2/en active Active
- 2017-02-22 CN CN201780081375.7A patent/CN110312669B/en active Active
- 2017-02-22 WO PCT/JP2017/006599 patent/WO2018154658A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425178A (en) * | 2008-11-05 | 2009-05-06 | 沈阳工业大学 | Method for repairing edge contour image of columnar injection deposition blank |
| CN102256889A (en) * | 2008-12-23 | 2011-11-23 | 奥的斯电梯公司 | In hoistway sheave resurfacing |
| CN201574202U (en) * | 2009-12-24 | 2010-09-08 | 上海交通大学 | Semi-automatic electric brush plating flow repair device for automobile crankshaft |
| CN105127421A (en) * | 2015-09-01 | 2015-12-09 | 广东工业大学 | Laser 3D printing repair method of damaged gear tooth surface |
| CN105728724A (en) * | 2016-03-18 | 2016-07-06 | 山东能源重装集团大族再制造有限公司 | 3D printing repair method of chain wheel |
| CN105803453A (en) * | 2016-04-22 | 2016-07-27 | 江苏大学 | Engine crankshaft fatigue crack laser repairing and strengthening device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPWO2018154658A1 (en) | 2019-06-27 |
| WO2018154658A1 (en) | 2018-08-30 |
| CN110312669A (en) | 2019-10-08 |
| JP6727396B2 (en) | 2020-07-22 |
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