CN110831880B - Elevator guide rail machining method, elevator guide rail machining device and elevator guide rail updating method - Google Patents
Elevator guide rail machining method, elevator guide rail machining device and elevator guide rail updating method Download PDFInfo
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- CN110831880B CN110831880B CN201780092742.3A CN201780092742A CN110831880B CN 110831880 B CN110831880 B CN 110831880B CN 201780092742 A CN201780092742 A CN 201780092742A CN 110831880 B CN110831880 B CN 110831880B
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- guide rail
- machining
- braking surface
- elevator
- roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/02—Applications of checking, fault-correcting, or safety devices in elevators responsive to abnormal operating conditions
- B66B5/16—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well
- B66B5/18—Braking or catch devices operating between cars, cages, or skips and fixed guide elements or surfaces in hoistway or well and applying frictional retarding forces
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B7/00—Other common features of elevators
- B66B7/02—Guideways; Guides
Abstract
In a method for machining a guide rail of an elevator, the guide rail having a braking surface that comes into contact with an emergency stop device when an elevator body is brought into emergency stop is machined in a state in which the guide rail is installed in a hoistway. Further, a guide rail machining apparatus having a machining tool for cutting out at least a part of the braking surface is suspended in the hoistway by a flexible suspension member, and the guide rail machining apparatus is moved along the guide rail by the suspension member while machining the braking surface by the machining tool.
Description
Technical Field
The present invention relates to a method and an apparatus for processing a guide rail of an elevator, which process the guide rail in a state of being installed in a hoistway, and a method for updating the elevator including a step of processing the guide rail.
Background
In a conventional elevator, a plurality of guide rails are machined and manufactured efficiently and with high accuracy using dedicated machining equipment installed in a workshop (see, for example, patent document 1).
In addition, in a conventional grinding device for an elevator guide rail, a frame is provided on an upper portion of a car. A grinding machine having a grinding guide rail in a frame body. Further, a plurality of rollers are provided on the upper and lower sides of the grinding machine of the housing, respectively (for example, see patent document 2).
In the conventional rail cleaning device, a plurality of plate-shaped cleaning bodies that contact the rail are attached to the cleaning body attachment member. A plurality of driving rollers are respectively arranged on the upper and lower parts of the cleaning body mounting component. These drive rollers are connected to motors via speed reduction mechanisms (see patent document 3, for example).
Documents of the prior art
Patent document
Patent document 1: japanese patent laid-open publication No. 2003-285216
Patent document 2: japanese laid-open patent publication No. 9-323873
Patent document 3: japanese Kokai publication Hei-2-15978
Disclosure of Invention
Problems to be solved by the invention
In a conventional elevator renewal construction, when an existing car is replaced with a newly installed car, an existing emergency stop device mounted on the existing car is also replaced with a newly installed emergency stop device. Further, the guide surface of the conventional guide rail may be worn due to long-term contact with the guide device mounted on the conventional car, and the friction coefficient with respect to the emergency stop device may be reduced. Therefore, when the existing car is replaced with a new car, the existing guide rail is also replaced with a new guide rail.
However, in this case, it takes much time and effort to remove the existing guide rail, install the newly installed guide rail, and position the newly installed guide rail, and the construction period becomes long. In addition, the cost is also increased.
In contrast, the conventional processing equipment for a guide rail shown in patent document 1 is only an apparatus for manufacturing a new guide rail and is installed in a workshop, and therefore, when an original guide rail is to be processed, the guide rail must be detached from a hoistway, transported to the workshop to be processed, and further transported into the hoistway to be mounted again, which results in an increase in construction period.
In the grinding device of patent document 2, since the grinding machine is fixed to the car via the frame, even if local processing such as processing for removing a step at a joint of the guide rail can be performed, if the processing is performed continuously over the entire guide rail while the car is running, the processing is affected by the vibration of the car and cannot be performed uniformly.
In addition, the cleaning device of patent document 3 cleans the surface of the guide rail only with the cleaning body, and cannot optimize the friction coefficient of the worn guide rail against the emergency stop device.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a method, an apparatus, and a method for updating a guide rail of an elevator, which can further optimize a friction coefficient of the guide rail with respect to an emergency stop apparatus in a state where the guide rail is installed in a hoistway.
Means for solving the problems
The method for processing the guide rail of the elevator of the present invention is a method for processing the guide rail of the elevator, which is provided with a braking surface that contacts an emergency stop device when an elevator body is in emergency stop, and is implemented in a state that the guide rail is installed in a hoistway, and the method for processing the guide rail of the elevator comprises the following steps: suspending a guide rail machining device having a machining tool with a braking surface of which at least a part is cut off in a hoistway by means of a flexible suspension member, and bringing the machining tool into contact with the braking surface; and moving the guide rail processing device along the guide rail via the suspension member while processing the braking surface by the processing tool.
Further, the elevator guide rail processing apparatus according to the present invention processes a guide rail having a braking surface that comes into contact with an emergency stop device when an elevator body is brought into emergency stop, and includes: a frame; a flexible suspension member connected to the frame and suspending the frame in the hoistway; and a machining tool provided to the frame to cut at least a part of the braking surface.
In addition, in the elevator renewal method of the present invention, the elevator comprises: an original lifting body which lifts in the shaft; a conventional emergency stop device mounted on the elevating body; and an original guide rail which is arranged in the hoistway and has a braking surface which is in contact with the emergency stop device when the lifting body is in emergency stop, wherein the original guide rail guides the lifting of the lifting body, and the updating method of the elevator comprises the following steps: a guide rail machining step of performing machining for cutting off at least a part of a braking surface of an existing guide rail; and a replacement step of replacing the existing elevating body and the existing emergency stop device with a new elevating body and a new emergency stop device while keeping the existing guide rail.
Effects of the invention
According to the elevator guide rail machining method, the elevator guide rail machining device, and the elevator updating method of the present invention, the friction coefficient of the guide rail with respect to the emergency stop device can be further optimized in a state where the guide rail is installed in the hoistway.
Drawings
Fig. 1 is a configuration diagram showing a state in the renovation construction of an elevator according to embodiment 1 of the present invention.
Fig. 2 is a cross-sectional view of the car guide rail along the line II-II of fig. 1.
Fig. 3 is a perspective view showing a detailed structure of the guide rail processing apparatus of fig. 1.
Fig. 4 is a perspective view of the guide rail processing apparatus of fig. 3 viewed from a different angle from that of fig. 3.
Fig. 5 is a perspective view of the guide rail processing apparatus of fig. 3 viewed from a different angle from that of fig. 3 and 4.
Fig. 6 is a perspective view of the guide rail processing apparatus of fig. 3 viewed from a different angle from fig. 3 to 5.
Fig. 7 is a perspective view showing a state in which the guide rail processing device of fig. 3 is provided to a car guide rail.
Fig. 8 is a perspective view showing a state in which the guide rail processing device of fig. 4 is provided to a car guide rail.
Fig. 9 is a perspective view showing a state in which the guide rail processing device of fig. 5 is provided to a car guide rail.
Fig. 10 is a sectional view showing a contact state of the processing tool of fig. 7 with a car guide rail.
Fig. 11 is a sectional view showing a contact state of the 1 st and 2 nd guide rollers and the 1 st and 2 nd pressing rollers of fig. 3 with the car guide rail.
Fig. 12 is a flowchart illustrating a guide rail processing method according to embodiment 1.
Fig. 13 is a structural diagram schematically illustrating a state of step S5 of fig. 12.
Fig. 14 is a structural diagram schematically illustrating a state of step S6 of fig. 12.
Fig. 15 is a structural diagram schematically illustrating a state of step S8 of fig. 12.
Fig. 16 is a sectional view showing a case where a pair of braking surfaces of fig. 11 are not parallel to each other.
Fig. 17 is a cross-sectional view showing a comparative example in which the outer peripheral surface of the platen roller of fig. 16 is made cylindrical.
Fig. 18 is a configuration diagram schematically showing a main part of a guide rail processing apparatus according to embodiment 2 of the present invention.
Fig. 19 is a cross-sectional view showing a modification in which the outer peripheral portion of the platen roller of fig. 11 is a rubber portion.
Fig. 20 is a sectional view showing a case where a pair of braking surfaces of fig. 19 are not parallel to each other.
Fig. 21 is a configuration diagram showing a modification in which the number of guide rollers and press rollers in fig. 15 is reduced.
Fig. 22 is a structural view showing a modification of the guide portion configured to be sandwiched between the machining tool and the platen roller of fig. 21.
Fig. 23 is a configuration diagram showing a modification of the platen roller of fig. 15.
Detailed Description
Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.
Fig. 1 is a configuration diagram showing a state in the renovation construction of an elevator according to embodiment 1 of the present invention. In the figure, a pair of car guide rails 2 are provided in a hoistway 1. Each car guide rail 2 is configured by joining a plurality of guide rail members in the vertical direction. Each car guide rail 2 is fixed to a hoistway wall by a plurality of rail brackets (not shown).
A car 3 as a lifting body is disposed between the pair of car guide rails 2. The car 3 is raised and lowered in the hoistway 1 along the car guide rails 2.
The 1 st end of the suspension 4 is connected to the upper part of the car 3. A plurality of ropes or a plurality of belts are used as the suspension body 4. A counterweight (not shown) is connected to the 2 nd end of the suspension body 4. The car 3 and the counterweight are suspended in the hoistway 1 by a suspension body 4.
The intermediate portion of the suspension body 4 is wound around a drive sheave of a hoisting machine (not shown). The car 3 and the counterweight are raised and lowered in the hoistway 1 by rotating the drive sheave. A pair of counterweight guide rails (not shown) for guiding the raising and lowering of the counterweight is provided in the hoistway 1.
An emergency stop device 5 is mounted on a lower portion of the car 3. The safety device 5 grips the pair of car guide rails 2 to bring the car 3 to a safety stop.
A guide rail machining device 7 for machining the car guide rail 2 is provided below the car 3. In fig. 1, the guide rail processing device 7 is shown as a box only, and the detailed configuration will be described later.
The guide rail processing device 7 is suspended from the lower portion of the car 3 in the hoistway 1 via a flexible suspension member 8. As the suspension member 8, for example, a rope, a wire, or a belt is used. The guide rail machining device 7 is used for machining the car guide rail 2 installed in the hoistway 1, and is removed together with the suspension member 8 during normal operation.
Fig. 2 is a cross-sectional view of the car guide rail 2 along the line II-II of fig. 1. The car guide rail 2 has a bracket fixing portion 2a and a guide portion 2 b. The bracket fixing portion 2a is a portion fixed to the rail bracket. The guide portion 2b projects at right angles from the center in the width direction of the bracket fixing portion 2a toward the car 3 side, and guides the car 3 to ascend and descend. The guide portion 2b is held by the safety device 5 when the car 3 is stopped in an emergency.
The guide portion 2b has a distal end surface 2d and a pair of braking surfaces 2c facing each other. The distal end surface 2d is an end surface of the guide portion 2b on the opposite side to the bracket fixing portion 2a, i.e., on the car 3 side. The pair of braking surfaces 2c and the distal end surface 2d function as guide surfaces that come into contact with the guide device 6 during normal operation. The pair of braking surfaces 2c are surfaces that come into contact with the safety device 5 when the car 3 is stopped in an emergency.
Fig. 3 is a perspective view showing a detailed structure of the guide rail processing device 7 of fig. 1, fig. 4 is a perspective view of the guide rail processing device 7 of fig. 3 viewed from a different angle from fig. 3, fig. 5 is a perspective view of the guide rail processing device 7 of fig. 3 viewed from a different angle from fig. 3 and 4, and fig. 6 is a perspective view of the guide rail processing device 7 of fig. 3 viewed from a different angle from fig. 3 to 5.
The guide rail processing device 7 includes a frame 11, a connecting member 12, a processing tool 13, a driving device 14, a 1 st guide roller 15, a 2 nd guide roller 16, a 1 st press roller 17, a 2 nd press roller 18, a 1 st end face roller 19, and a 2 nd end face roller 20.
The frame 11 has a frame main body 21 and a frame split body 22. The link 12, the processing tool 13, the driving device 14, the 1 st guide roller 15, the 2 nd guide roller 16, the 1 st end surface roller 19, and the 2 nd end surface roller 20 are provided on the frame body 21.
The 1 st press roller 17 and the 2 nd press roller 18 are provided in the frame split body 22.
The connector 12 is provided at an upper end portion of the frame body 21. The suspension member 8 is connected to the connecting member 12.
The driving device 14 is disposed on the opposite side of the frame body 21 from the machining tool 13. Furthermore, the driving device 14 rotates the machining tool 13. As the driving device 14, for example, an electric motor is used.
As the machining tool 13, for example, a cylindrical flat grinding wheel having a large number of abrasive grains on the outer peripheral surface is used, but a cutting tool or the like may be used. By rotating the machining tool 13 in a state where the outer peripheral surface of the machining tool 13 is in contact with the braking surface 2c, at least a part, that is, a part or the entire surface of the braking surface 2c can be shaved off. This makes it possible to roughen the surface roughness of the braking surface 2c, for example, and to set the friction coefficient of the braking surface 2c with respect to the emergency stop device 5 to a more appropriate value.
When the braking surface 2c is machined by the machining tool 13, machining chips are generated. The frame main body 21 is provided with a cover (not shown) for preventing the machining chips from scattering around the guide rail machining device 7.
The 1 st guide roller 15 and the 2 nd guide roller 16 are provided in the frame body 21 in parallel with the machining tool 13. In a state where the working tool 13 is brought into contact with one braking surface 2c, the 1 st guide roller 15 is disposed above the working tool 13, and the 2 nd guide roller 16 is disposed below the working tool 13. The working tool 13 is disposed between the 1 st guide roller 15 and the 2 nd guide roller 16.
The 1 st guide roller 15 and the 2 nd guide roller 16 contact the braking surface 2c together with the machining tool 13, whereby the outer peripheral surface of the machining tool 13 is brought into parallel contact with the braking surface 2 c. That is, the outer peripheral surface of the machining tool 13 is uniformly brought into contact with the braking surface 2c over the entire width of the machining tool 13.
Two line segments as contact portions of the guide rollers 15 and 16 with the braking surface 2c and one line segment as a contact portion of the machining tool 13 with the braking surface 2c are set so as to be able to exist in one plane.
The 1 st press roller 17 sandwiches the guide portion 2b with the 1 st guide roller 15. The 2 nd press roller 18 sandwiches the guide portion 2b with the 2 nd guide roller 16. That is, when the working tool 13, the 1 st guide roller 15, and the 2 nd guide roller 16 contact the braking surface 2c on the working side, the 1 st press roller 17 and the 2 nd press roller 18 contact the braking surface 2c on the opposite side.
The rotation axes of the rollers 13, 15, 16, 17, 18 are parallel to each other and horizontal when the processing of the car guide rail 2 is performed.
The 1 st end surface roller 19 is provided at an upper end portion of the frame body 21. The 2 nd end surface roller 20 is provided at the lower end portion of the frame body 21. The 1 st end surface roller 19 and the 2 nd end surface roller 20 are in contact with the end surface 2d when the car guide rail 2 is processed.
The frame split body 22 is linearly movable with respect to the frame main body 21 between a pinching position where the guide portion 2b is pinched between the guide rollers 15 and 16 and the press rollers 17 and 18, and a releasing position where the press rollers 17 and 18 are away from the guide rollers 15 and 16 as compared with the pinching position.
The frame body 21 is provided with a pair of rod-shaped frame guides 23 that guide the movement of the frame split body 22 relative to the frame body 21. The frame guide 23 penetrates the frame split body 22.
A pair of rod fixing portions 24 are provided at upper and lower end portions of the frame body 21. The frame split body 22 is provided with a pair of opposing portions 25 opposing the rod fixing portions 24. A frame spring bar 26 is fixed to each bar fixing portion 24. Each frame spring rod 26 penetrates the opposing portion 25.
A frame spring receiver 27 is attached to the frame spring rod 26. Frame springs 28 are provided between the frame spring seats 27 and the opposing portions 25, respectively. Each frame spring 28 generates a force to move the frame split body 22 to the clamping position.
The pressing force of the frame spring 28 to the pressing rollers 17, 18 is set to the following magnitude: the force exceeding the force that the guide rail processing device 7 tries to tilt due to the eccentricity of the center of gravity position of the guide rail processing device 7 can maintain the outer peripheral surfaces of the guide rollers 15 and 16 parallel to the braking surface 2 c.
Further, the pressing force of the frame spring 28 to the pressing rollers 17, 18 is set to the following magnitude: even when the guide rail machining device 7 is moved along the car guide rail 2 while rotating the machining tool 13, the outer peripheral surfaces of the guide rollers 15 and 16 can be maintained parallel to the braking surface 2 c.
A release position holding mechanism (not shown) is provided between the frame main body 21 and the frame split body 22, and holds the frame split body 22 at the release position against the spring force of the frame spring 28.
The machining tool 13 and the driving device 14 are linearly movable between a machining position and a spaced position with respect to the frame body 21. The machining position is a position where the machining tool 13 is in contact with the braking surface 2c in a state where the guide rollers 15 and 16 are in contact with the braking surface 2 c. The separation position is a position where the working tool 13 is separated from the braking surface 2c in a state where the guide rollers 15 and 16 are in contact with the braking surface 2 c.
As described above, the pressure rollers 17, 18 are movable in the direction perpendicular to the braking surface 2 c. The machining tool 13 and the driving device 14 are also movable in a direction perpendicular to the braking surface 2 c.
As shown in fig. 4, the driving device 14 is attached to a flat plate-shaped movable supporting member 29. A pair of rod-shaped drive unit guides 30 are fixed to the frame body 21. The movable supporting member 29 is slidable along the driving device guide 30. Thereby, the machining tool 13 and the driving device 14 can linearly move with respect to the frame body 21.
A machining tool spring 31 is provided between the movable support member 29 and the frame body 21, and the machining tool spring 31 generates a force for moving the machining tool 13 and the driving device 14 to the machining position side. The pressing force of the machining tool spring 31 against the machining tool 13 is set to a magnitude that does not cause troubles such as chattering.
An isolation position holding mechanism (not shown) is provided between the frame body 21 and the movable support member 29, and holds the machining tool 13 and the driving device 14 at the isolation position against the spring force of the machining tool spring 31.
Fig. 7 is a perspective view showing a state in which the guide rail machining device 7 of fig. 3 is provided on the car guide rail 2, fig. 8 is a perspective view showing a state in which the guide rail machining device 7 of fig. 4 is provided on the car guide rail 2, and fig. 9 is a perspective view showing a state in which the guide rail machining device 7 of fig. 5 is provided on the car guide rail 2.
Fig. 10 is a cross-sectional view showing a contact state of the processing tool 13 of fig. 7 with the car guide rail 2. The width of the outer peripheral surface of the machining tool 13 is larger than the width of the braking surface 2 c. Thereby, the working tool 13 is in contact with the entire width direction of the braking surface 2 c.
Fig. 11 is a cross-sectional view showing a contact state of the 1 st and 2 nd guide rollers 15 and 16 and the 1 st and 2 nd pressing rollers 17 and 18 of fig. 7 with the car guide rail 2. The outer peripheral surfaces of the 1 st and 2 nd guide rollers 15 and 16 are cylindrical. That is, the outer circumferential surfaces of the 1 st and 2 nd guide rollers 15 and 16 have a straight shape in a cross section along the rotation center C1 of the 1 st and 2 nd guide rollers 15 and 16.
The outer peripheral surfaces of the 1 st and 2 nd press rolls 17 and 18 are substantially spherical. That is, the outer circumferential surfaces of the 1 st and 2 nd press rolls 17 and 18 have an arc shape in a cross section along the rotation center C2 of the 1 st and 2 nd press rolls 17 and 18.
Next, fig. 12 is a flowchart illustrating a guide rail processing method according to embodiment 1. When the car guide rail 2 is machined by the guide rail machining device 7, first, a control device (not shown) and a power supply (not shown) that control the guide rail machining device 7 are carried into the car 3 (step S1). The guide rail machining device 7 is carried into the pit of the hoistway 1 (step S2).
Next, the car 3 is moved to the lower part of the hoistway 1, and the guide rail machining device 7 is connected to the car 3 via the suspension member 8 and suspended in the hoistway 1 (step S3). The guide rail processing device 7 is connected to the control device and the power supply (step S4). Then, the guide rail machining device 7 is installed on the car guide rail 2 (steps S5 to S6).
Specifically, as shown in fig. 13, the guide rollers 15 and 16 are brought into contact with one braking surface 2c in a state where the machining tool 13 is held at the spaced position and the frame split body 22 is held at the released position (step S5). Further, the end face rollers 19, 20 are brought into contact with the end face 2 d.
Thereafter, as shown in fig. 14, the frame split body 22 is moved to the clamping position (step S6), and the guide portion 2b is clamped between the guide rollers 15 and 16 and the press rollers 17 and 18.
After the guide rail machining device 7 is installed on the car guide rail 2 in this manner, the machining tool 13 is rotated (step S7). Then, as shown in fig. 15, the machining tool 13 and the drive device 14 are moved to the machining position, and the car 3 is moved to the uppermost floor at a speed lower than the rated speed (step S8). That is, the guide rail machining device 7 is moved along the car guide rail 2 while the braking surface 2c is machined by the machining tool 13. When the car 3 reaches the uppermost floor, the machining tool 13 and the drive device 14 are moved to the isolation position (step S9). Further, the rotation of the processing tool 13 is stopped, and the car 3 is stopped (step S10).
Thereafter, the machining amount is measured while the car 3 is moved to the lowermost floor (step S11). In this example, the braking surface 2c is processed only when the car 3 is raised, and therefore, it is preferable to separate the processing tool 13 from the braking surface 2c when the car 3 is lowered. The amount of machining is measured by, for example, measuring the thickness of the guide portion 2b or measuring the surface roughness of the braking surface 2 c.
When the car 3 reaches the lowermost floor, it is checked whether the machining amount reaches a preset value (step S12). If the machining amount is insufficient, the guide portion 2b is sandwiched between the guide rollers 15 and 16 and the press rollers 17 and 18, and steps S7 to 12 are performed again. When the machining amount is sufficient, the machining is completed.
When the braking surface 2c on the opposite side is processed, the guide rail processing device 7 symmetrical to the left and right in fig. 3 may be used, or the guide rail processing device 7 in fig. 3 may be suspended in a vertically inverted state. In the latter case, the connecting member 12 may be added to the lower end of the frame body 21.
By applying the above-described processing method to the remaining car guide rails 2 as well, all the braking surfaces 2c can be processed. Further, the braking surface 2c having 2 or more surfaces can be simultaneously processed by 2 or more guide rail processing devices 7.
Next, a method of updating an elevator according to embodiment 1 will be described. In embodiment 1, the existing car guide rails 2 are left and the existing car 3 and the existing safety device 5 are replaced with a new car and a new safety device.
Specifically, the following processing is performed: using the guide rail machining device 7 as described above, at least a part of the braking surface 2c of the car guide rail 2 is cut off (guide rail machining step). At this time, the guide rail machining device 7 is connected to the existing car 3 via the suspension member 8, and the guide rail machining device 7 is moved along the existing car guide rail 2 by the movement of the existing car 3.
Thereafter, the existing car guide rails 2 are retained, and the existing car 3 and the existing safety device 5 are replaced with a new car and a new safety device (replacement step).
In the guide rail processing method and the guide rail processing apparatus 7 as described above, since the guide rail processing apparatus 7 is suspended in the hoistway 1 via the flexible suspension member 8 and the guide rail processing apparatus 7 is moved along the car guide rail 2 while the braking surface 2c is processed by the processing tool 13, the friction coefficient of the car guide rail 2 with respect to the safety device 5 can be further optimized in a state where the car guide rail 2 is installed in the hoistway 1.
Further, the braking surface 2c can be uniformly processed over substantially the entire length of the car guide rail 2.
Further, since the guide rail processing device 7 is suspended by the suspension member 8, it is possible to prevent the vibration of the car 3 from being transmitted to the guide rail processing device 7 during the processing of the braking surface 2 c. This prevents the occurrence of machining defects, and thus the braking surface 2c can be machined stably.
Further, since the guide rail processing device 7 is suspended from the car 3, it is not necessary to separately prepare a device for lifting the guide rail processing device 7. In addition, the region of the car guide rail 2 gripped by the safety device 5 can be efficiently machined. In addition, in an elevator having a long lifting stroke, processing can be easily performed over substantially the entire length of the car guide rail 2 without using a long suspension member.
Further, since the guide rollers 15 and 16 are provided in the guide rail processing device 7, the outer peripheral surface of the processing tool 13 can be brought into contact with the braking surface 2c in parallel more reliably, and the braking surface 2c can be processed uniformly without generating cutting residue.
Further, since the guide portion 2b is sandwiched between the guide rollers 15 and 16 and the press rollers 17 and 18, the outer peripheral surface of the machining tool 13 can be brought into contact with the braking surface 2c more stably in parallel. In addition, even when the braking surface 2c is inclined in the vertical direction, the outer peripheral surface of the machining tool 13 can be maintained parallel to the braking surface 2 c.
Further, since the connecting link 12 is provided in the frame main body 21, the guide rail processing device 7 can be moved along the car guide rail 2 in a state where the suspension member 8 is connected to the connecting link 12 and suspended in the hoistway 1. This enables the friction coefficient of the car guide rail 2 with respect to the safety device 5 to be further optimized in a state where the car guide rail 2 is installed in the hoistway 1.
Further, since the 1 st guide roller 15 is disposed above the machining tool 13 and the 2 nd guide roller 16 is disposed below the machining tool 13, the outer peripheral surface of the machining tool 13 and the braking surface 2c can be maintained more stably in parallel. Thus, even when the car guide rail 2 is inclined, curved, or undulated in the vertical direction, the outer peripheral surface of the machining tool 13 can be maintained parallel to the braking surface 2 c.
Further, since the machining tool 13 is disposed at the intermediate position between the 1 st and 2 nd guide rollers 15 and 16, the moving direction of the machining tool 13 with respect to the frame body 21 can be set to the direction perpendicular to the braking surface 2 c. This stabilizes the force with which the working tool 13 is pressed against the braking surface 2 c. Further, the machining unevenness, that is, the unevenness of the cutting amount does not occur, and stable machining can be performed.
Further, since the frame 11 is divided into the frame main body 21 and the frame divided bodies 22 and the force for moving the frame divided bodies 22 to the clamping position side is generated by the frame spring 28, the guide portion 2b can be stably clamped between the guide rollers 15 and 16 and the press rollers 17 and 18 with a simple configuration.
Further, since the machining tool 13 and the driving device 14 are movable between the machining position and the spaced-apart position and a force for moving the machining tool 13 and the driving device 14 to the machining position side is generated by the machining tool spring 31, the machining tool 13 can be stably pressed against the braking surface 2c with a simple configuration, and stable machining can be performed. Further, by moving the machining tool 13 to the spaced position, the guide rail machining device 7 can be moved along the car guide rail 2 without machining the braking surface 2 c.
Further, since the end face rollers 19 and 20 are provided in the frame body 21, the guide rail processing device 7 can be smoothly moved along the car guide rail 2 in a stable posture.
Further, since the outer peripheral surfaces of the guide rollers 15 and 16 are cylindrical and the outer peripheral surfaces of the press rollers 17 and 18 have an arc-shaped cross-sectional shape, the outer peripheral surfaces of the guide rollers 15 and 16 and the braking surface 2c are automatically adjusted to be parallel to each other.
Thus, for example, as shown in fig. 16, even when the braking surface 2c on the machining side and the braking surface 2c on the opposite side are not parallel to each other, the outer peripheral surface of the machining tool 13 and the braking surface 2c on the machining side can be more reliably maintained parallel to each other.
In contrast, as shown in fig. 17, when the outer peripheral surfaces of the press rolls 17 and 18 are cylindrical, the outer peripheral surfaces of the press rolls 17 and 18 are parallel to the opposite braking surface 2c, and thus the outer peripheral surfaces of the guide rolls 15 and 16 may be inclined with respect to the processing-side braking surface 2c, and the processing tool 13 may also be inclined with respect to the braking surface 2 c. However, if the pair of braking surfaces 2c are parallel to each other, the outer peripheral surfaces of the press rollers 17, 18 may be cylindrical.
In the above-described elevator renewal method, after the processing of cutting off at least a part of the braking surface 2c of the existing car guide rail 2 is performed, the existing car guide rail 2 is left and the existing car 3 and the existing safety device 5 are replaced with a newly installed car and a newly installed safety device, so that the friction coefficient of the existing car guide rail 2 with respect to the newly installed safety device can be further optimized in a state where the car guide rail 2 is installed in the hoistway 1. Thus, the elevator can be renewed without replacing the existing car guide rails 2, the construction period can be greatly shortened, and the cost of construction can be greatly reduced.
In the guide rail processing step, the guide rail processing device 7 is suspended in the hoistway 1 by the flexible suspension member 8, and the guide rail processing device 7 is moved along the car guide rail 2 by the suspension member 8 while rotating the processing tool 13, so that the braking surface 2c can be stably processed over substantially the entire length of the car guide rail 2.
Further, since the guide rail machining device 7 is moved by the existing car 3, it is possible to prevent machining chips and the like generated during machining from adhering to the newly installed car and the newly installed emergency stop device 5.
Next, fig. 18 is a schematic configuration diagram showing a main part of a guide rail processing apparatus according to embodiment 2 of the present invention. Cleaning bodies 32 are provided between the processing tool 13 of the frame body 21 and the guide rollers 15 and 16, and the cleaning bodies 32 are in contact with the braking surface 2c on the processing side, respectively, to remove processing chips from the braking surface 2 c.
In this example, the cleaning bodies 32 that are in contact with the braking surfaces 2c on the opposite sides are also provided at positions of the frame segment 22 that face the cleaning bodies 32. As the cleaning body 32, for example, a cloth-like member is used. The other structures, processing methods, and updating methods are the same as those of embodiment 1.
By using such a cleaning body 32, it is possible to prevent the machining chips from entering between the guide rollers 15 and 16 and the braking surface 2c, and to more reliably maintain the outer peripheral surface of the machining tool 13 parallel to the braking surface 2 c. Further, the guide rollers 15 and 16, the press rollers 17 and 18, and the braking surface 2c can be prevented from being damaged by the machining chips.
Further, the same effects as those of embodiment 2 can be obtained by providing an adsorption port in the frame or the cover and processing the machining chips therefrom while adsorbing the machining chips by using a dust collecting device such as a vacuum cleaner.
Further, instead of making the cross-sectional shape of the outer peripheral surface of the platen rollers 17, 18 an arc shape, a self-aligning roller bearing may be used for a bearing (not shown) attached to the platen rollers 17, 18, and the same effect as that in the case of making the cross-sectional shape an arc shape can be obtained.
Further, instead of making the cross-sectional shape of the outer peripheral surfaces of the press rolls 17, 18 arc-shaped, for example, as shown in fig. 19, the outer peripheral portions of the press rolls 17, 18 may be made of a material having rubber elasticity, and the same effect as that in the case of making the cross-sectional shape arc-shaped can be obtained. In fig. 19, each of the press rollers 17 and 18 includes a roller main body 34 and a cylindrical rubber portion 35 covering the outer periphery of the roller main body 34.
The rubber portion 35 is made of an elastic body having a young's modulus smaller than that of the material of the roller main body 34 and the material of the guide rollers 15 and 16. As the elastic body, a material having rubber elasticity, for example, urethane rubber having a hardness of 50 is used.
With such a configuration, for example, as shown in fig. 20, when the braking surface 2c on the machining side is not parallel to the braking surface 2c on the opposite side, the rubber portion 35 is deformed along the inclination of the braking surface 2c, and thereby the outer peripheral surfaces of the guide rollers 15 and 16 are automatically adjusted to be parallel to the braking surface 2 c.
In addition, the guide roller may be one or more than three. Accompanying this, the number of the press rolls may be one or three or more. For example, as shown in fig. 21, the guide portion 2b may be sandwiched between one guide roller 15 and one press roller 17.
In addition, the guide roller and the press roller may be omitted as long as the working tool can be stably abutted in parallel with the braking surface.
For example, fig. 22 shows a structure in which the guide portion 2b is sandwiched between the working tool 13 and the press roller 17. With this configuration, the machining tool 13 can be abutted in parallel with the braking surface 2 c.
Fig. 23 shows a structure in which the frame split body and the press roller are omitted, and the frame body 21 is pressed toward the guide portion 2b by the pair of frame body springs 33. With this configuration, the machining tool 13 can be abutted in parallel with the braking surface 2 c.
Furthermore, the axis of rotation of the working tool and the axis of rotation of the guide roller may not necessarily be parallel.
In the above example, the force for pressing the working tool and the platen roller against the braking surface is generated by a spring, but the force may be generated by a pneumatic cylinder, a hydraulic cylinder, or an electric actuator, for example.
In addition, the connector may be integrally formed with the frame.
In the above example, the braking surface is processed while the guide rail processing device is raised, but the braking surface may be processed while the guide rail processing device is lowered.
In the above example, the guide rail processing apparatus is suspended from the existing car, but the guide rail processing apparatus may be suspended from a newly installed car.
Further, in the above example, the guide rail processing device is suspended from the car, but the guide rail processing device may be suspended from a hoisting device such as a winch provided in an upper portion of the hoistway, for example, and the moving speed of the guide rail processing device can be set more freely.
Further, in the above example, the case where the vertically movable body is the car and the processing object is the car guide rail is shown, but the present invention can also be applied to the case where the vertically movable body is the counterweight and the processing object is the counterweight guide rail. For example, when an emergency stop device is mounted on both the car and the counterweight, both the car guide rail and the counterweight guide rail may be processed.
In the above example, the guide rail is machined at the time of the renewal process, but the guide rail machining device and the guide rail machining method according to the present invention can be applied also, for example, when it is desired to adjust the surface roughness of the braking surface in a newly installed elevator or when it is desired to refresh the braking surface at the time of maintenance of an existing elevator.
The present invention can be applied to various types of elevators such as an elevator having a machine room, an elevator without a machine room, a double-deck elevator, and a single-hoistway multi-car elevator. The single-shaft multi-car type is a type in which an upper car and a lower car disposed directly below the upper car are raised and lowered independently in a common shaft.
Description of the reference symbols
1: a hoistway; 2: a car guide rail; 2 c: a braking surface; 2 d: a distal end face; 3: a car (lifting body); 5: an emergency stop device; 7: a guide rail processing device; 8: a suspension member; 11: a frame; 13: a machining tool; 14: a drive device; 15: a 1 st guide roller; 16: a 2 nd guide roller; 17: 1, a first press roller; 18: a 2 nd press roll; 19: 1 st end face roller; 20: 2 nd end face roll; 21: a frame body; 22: a frame dividing body; 28: a frame spring; 31: machining a tool spring; 32: a cleaning body.
Claims (28)
1. A method for machining a guide rail of an elevator, the method being for machining a guide rail having a braking surface that comes into contact with an emergency stop device when an elevator body is brought into emergency stop, the guide rail being machined in a state in which the guide rail is installed in a hoistway, the method comprising:
suspending a guide rail processing apparatus having a processing tool with at least a part of the braking surface cut off in the hoistway by a rope, a wire, or a belt as a flexible suspension member, and bringing the processing tool into contact with the braking surface; and
the guide rail machining device is moved along the guide rail via the suspension member while machining the braking surface with the machining tool.
2. The method of processing a guide rail of an elevator according to claim 1,
the guide rail processing apparatus is connected to the elevating body via the suspension member, and the guide rail processing apparatus is moved along the guide rail by the movement of the elevating body.
3. The method of processing a guide rail of an elevator according to claim 1 or 2,
the guide rail machining apparatus further has a drive device for rotating the machining tool,
the guide rail processing device is moved along the guide rail in a state where the processing tool is brought into contact with the braking surface.
4. The method of processing a guide rail of an elevator according to claim 3,
the processing tool is in the shape of a cylinder,
the guide rail processing apparatus further includes a guide roller that contacts the braking surface in parallel with the processing tool to bring the outer peripheral surface of the processing tool into contact with the braking surface in parallel,
the guide rail machining device is moved along the guide rail in a state where the outer peripheral surface of the machining tool and the outer peripheral surface of the guide roller are brought into contact with the braking surface.
5. The method of processing a guide rail of an elevator according to claim 4,
the guide rail processing device is also provided with a press roller for clamping the guide rail between the guide roller and the guide roller,
and moving the guide rail processing device along the guide rail in a state where the guide rail is sandwiched between the guide roller and the press roller.
6. A guide rail processing device for an elevator, which processes a guide rail having a braking surface that comes into contact with an emergency stop device when an elevating body is brought into emergency stop, the guide rail processing device for an elevator comprising:
a frame;
a rope, wire, or belt as a flexible suspension member connected to the frame to suspend the frame in the hoistway; and
a machining tool disposed on the frame to cut at least a portion of the braking surface.
7. The guide rail processing apparatus of an elevator according to claim 6,
the elevator guide rail machining device further includes a drive device for rotating the machining tool.
8. The guide rail processing apparatus of an elevator according to claim 7,
the processing tool is in the shape of a cylinder,
the guide rail machining device further includes a guide roller provided in the frame in parallel with the machining tool and contacting the braking surface together with the machining tool, thereby contacting the outer peripheral surface of the machining tool in parallel with the braking surface.
9. The guide rail processing apparatus of an elevator according to claim 8,
the guide rollers include a 1 st guide roller and a 2 nd guide roller, and the 1 st guide roller is disposed above the machining tool and the 2 nd guide roller is disposed below the machining tool in a state where the machining tool is brought into contact with the braking surface.
10. The guide rail processing apparatus of an elevator according to claim 8,
the guide rail processingequipment of elevator still possesses the compression roller, the compression roller set up in the frame, the compression roller with centre gripping between the deflector roll the guide rail.
11. The guide rail processing apparatus of an elevator according to claim 9,
the guide rail processingequipment of elevator still possesses the compression roller, the compression roller set up in the frame, the compression roller with centre gripping between the deflector roll the guide rail.
12. The guide rail processing apparatus of an elevator according to claim 10,
the outer peripheral surface of the guide roller is cylindrical,
the outer peripheral surface of the press roller has an arc shape in a cross section along the rotation center of the press roller.
13. The guide rail processing apparatus of an elevator according to claim 11,
the outer peripheral surface of the guide roller is cylindrical,
the outer peripheral surface of the press roller has an arc shape in a cross section along the rotation center of the press roller.
14. The guide rail processing apparatus of an elevator according to claim 10,
the outer peripheral surface of the guide roller is cylindrical,
the outer peripheral portion of the press roller is made of a material having rubber elasticity.
15. The guide rail processing apparatus of an elevator according to claim 11,
the outer peripheral surface of the guide roller is cylindrical,
the outer peripheral portion of the press roller is made of a material having rubber elasticity.
16. The guide rail processing apparatus of an elevator according to any one of claims 10 to 15,
the frame has:
a frame body provided with the machining tool, the driving device, and the guide roller; and
a frame division body provided with the press roller,
the frame split body is movable relative to the frame main body between a clamping position where the guide rail is clamped between the guide roller and the press roller, and a releasing position where the press roller is away from the guide roller as compared with the clamping position,
the frame is provided with a frame spring that generates a force that moves the frame split body toward the clamping position.
17. The guide rail processing apparatus of an elevator according to any one of claims 8 to 15,
the working tool and the driving device are movable relative to the frame between a working position where the working tool is in contact with the braking surface in a state where the guide roller is in contact with the braking surface, and an isolation position where the working tool is separated from the braking surface in a state where the guide roller is in contact with the braking surface,
the frame is provided with a machining tool spring that generates a force for moving the machining tool and the drive device to the machining position side.
18. The guide rail processing apparatus of an elevator according to claim 16,
the working tool and the driving device are movable relative to the frame between a working position where the working tool is in contact with the braking surface in a state where the guide roller is in contact with the braking surface, and an isolation position where the working tool is separated from the braking surface in a state where the guide roller is in contact with the braking surface,
the frame is provided with a machining tool spring that generates a force for moving the machining tool and the drive device to the machining position side.
19. The guide rail processing apparatus of an elevator according to any one of claims 6 to 15, 18,
the elevator guide rail processing device further includes a terminal surface roller that is provided on the frame and contacts a terminal surface of the guide rail on the elevator body side.
20. The guide rail processing apparatus of an elevator according to claim 16,
the elevator guide rail processing device further includes a terminal surface roller that is provided on the frame and contacts a terminal surface of the guide rail on the elevator body side.
21. The guide rail processing apparatus of an elevator according to claim 17,
the elevator guide rail processing device further includes a terminal surface roller that is provided on the frame and contacts a terminal surface of the guide rail on the elevator body side.
22. The guide rail processing apparatus of an elevator according to any one of claims 6 to 15, 18, 20, 21, wherein,
the elevator guide rail machining device further includes a cleaning body that is provided on the frame and that is in contact with the braking surface to remove machining chips from the braking surface.
23. The guide rail processing apparatus of an elevator according to claim 16,
the elevator guide rail machining device further includes a cleaning body that is provided on the frame and that is in contact with the braking surface to remove machining chips from the braking surface.
24. The guide rail processing apparatus of an elevator according to claim 17,
the elevator guide rail machining device further includes a cleaning body that is provided on the frame and that is in contact with the braking surface to remove machining chips from the braking surface.
25. The guide rail processing apparatus of an elevator according to claim 19,
the elevator guide rail machining device further includes a cleaning body that is provided on the frame and that is in contact with the braking surface to remove machining chips from the braking surface.
26. An elevator modernization method, the elevator comprising:
an original lifting body which lifts in the shaft;
a conventional emergency stop device mounted on the ascending/descending body; and
a guide rail provided in the hoistway and having a braking surface that comes into contact with the emergency stop device when the existing elevating body is brought into emergency stop, the guide rail guiding the elevating body to be elevated,
the method for updating an elevator comprises the following steps:
a guide rail machining step of performing machining for cutting off at least a part of the braking surface of the original guide rail; and
and a replacement step of replacing the original lifting body and the original emergency stop device with a new lifting body and a new emergency stop device while keeping the original guide rail.
27. The updating method of an elevator according to claim 26,
the guide rail machining process comprises the following steps:
suspending a guide rail machining device, which includes a machining tool and a drive device for rotating the machining tool, in the hoistway via a flexible suspension member, and bringing an outer peripheral surface of the machining tool into contact with the braking surface; and
the guide rail processing apparatus is moved along the guide rail via the suspension member while rotating the processing tool.
28. The updating method of an elevator according to claim 27, wherein,
in the step of moving the guide rail processing apparatus along the guide rail, the guide rail processing apparatus is connected to the existing vertically movable body via the suspension member, and the guide rail processing apparatus is moved along the guide rail by the movement of the existing vertically movable body.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2017/024683 WO2019008708A1 (en) | 2017-07-05 | 2017-07-05 | Elevator guide rail machining method, guide rail machining device, and renewal method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110831880A CN110831880A (en) | 2020-02-21 |
| CN110831880B true CN110831880B (en) | 2021-07-23 |
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| CN201780092742.3A Active CN110831880B (en) | 2017-07-05 | 2017-07-05 | Elevator guide rail machining method, elevator guide rail machining device and elevator guide rail updating method |
Country Status (3)
| Country | Link |
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| JP (1) | JP6765534B2 (en) |
| CN (1) | CN110831880B (en) |
| WO (1) | WO2019008708A1 (en) |
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| WO2020161792A1 (en) * | 2019-02-05 | 2020-08-13 | 三菱電機株式会社 | Guide rail machining apparatus and guide rail machining method |
| AU2021326959A1 (en) | 2020-08-18 | 2023-03-16 | Inventio Ag | Method for forming and smoothing a hollow-profile guide rail of a lift system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09323873A (en) * | 1996-06-07 | 1997-12-16 | Hitachi Building Syst Co Ltd | Grinding attachment for elevator guide rail |
| JP2005001800A (en) * | 2003-06-11 | 2005-01-06 | Toshiba Elevator Co Ltd | Elevator device |
| JP2007054911A (en) * | 2005-08-24 | 2007-03-08 | Toshiba Elevator Co Ltd | Guide rail machining apparatus and machining method |
| CN101415633A (en) * | 2006-08-22 | 2009-04-22 | 三菱电机株式会社 | Guide rail for elevator and apparatus for processing elevator rail surface |
| JP2010129952A (en) * | 2008-12-01 | 2010-06-10 | Nippon Telegr & Teleph Corp <Ntt> | Method of manufacturing through electrode wiring |
| JP2010168182A (en) * | 2009-01-23 | 2010-08-05 | Mitsubishi Electric Building Techno Service Co Ltd | Elevator rail rust removal device |
| JP2013119474A (en) * | 2011-12-08 | 2013-06-17 | Mitsubishi Electric Corp | Rail device of elevator and method for acquiring braking force related to rail |
| CN103339052A (en) * | 2010-12-01 | 2013-10-02 | 通力股份公司 | Elevator arrangement and method |
| CN104003263A (en) * | 2013-12-31 | 2014-08-27 | 西子奥的斯电梯有限公司 | Rust removing device for elevator guide rail |
| CN204248619U (en) * | 2014-10-31 | 2015-04-08 | 张家港市张运机械制造有限公司 | Cage guide rust remover |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10129952A (en) * | 1996-10-31 | 1998-05-19 | Hitachi Building Syst Co Ltd | Cleaning device for guide rail |
| US20140238783A1 (en) * | 2011-10-13 | 2014-08-28 | Otis Elevator Company | Guide Rail for Elevator |
-
2017
- 2017-07-05 CN CN201780092742.3A patent/CN110831880B/en active Active
- 2017-07-05 JP JP2019528267A patent/JP6765534B2/en active Active
- 2017-07-05 WO PCT/JP2017/024683 patent/WO2019008708A1/en active Application Filing
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09323873A (en) * | 1996-06-07 | 1997-12-16 | Hitachi Building Syst Co Ltd | Grinding attachment for elevator guide rail |
| JP2005001800A (en) * | 2003-06-11 | 2005-01-06 | Toshiba Elevator Co Ltd | Elevator device |
| JP2007054911A (en) * | 2005-08-24 | 2007-03-08 | Toshiba Elevator Co Ltd | Guide rail machining apparatus and machining method |
| CN101415633A (en) * | 2006-08-22 | 2009-04-22 | 三菱电机株式会社 | Guide rail for elevator and apparatus for processing elevator rail surface |
| JP2010129952A (en) * | 2008-12-01 | 2010-06-10 | Nippon Telegr & Teleph Corp <Ntt> | Method of manufacturing through electrode wiring |
| JP2010168182A (en) * | 2009-01-23 | 2010-08-05 | Mitsubishi Electric Building Techno Service Co Ltd | Elevator rail rust removal device |
| CN103339052A (en) * | 2010-12-01 | 2013-10-02 | 通力股份公司 | Elevator arrangement and method |
| JP2013119474A (en) * | 2011-12-08 | 2013-06-17 | Mitsubishi Electric Corp | Rail device of elevator and method for acquiring braking force related to rail |
| CN104003263A (en) * | 2013-12-31 | 2014-08-27 | 西子奥的斯电梯有限公司 | Rust removing device for elevator guide rail |
| CN204248619U (en) * | 2014-10-31 | 2015-04-08 | 张家港市张运机械制造有限公司 | Cage guide rust remover |
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| CN110831880A (en) | 2020-02-21 |
| JP6765534B2 (en) | 2020-10-07 |
| JPWO2019008708A1 (en) | 2019-11-07 |
| WO2019008708A1 (en) | 2019-01-10 |
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