WO2019008708A1

WO2019008708A1 - Elevator guide rail machining method, guide rail machining device, and renewal method

Info

Publication number: WO2019008708A1
Application number: PCT/JP2017/024683
Authority: WO
Inventors: 鵜飼　義一; 貴史山下; 克倫大木; 中筋　智明; 長谷川　正彦; 温樹橋口
Original assignee: 三菱電機株式会社
Priority date: 2017-07-05
Filing date: 2017-07-05
Publication date: 2019-01-10
Also published as: CN110831880A; CN110831880B; JP6765534B2; JPWO2019008708A1

Abstract

In this elevator guide rail machining method, a guide rail having a braking surface with which an emergency stop device comes into contact when an elevating body makes an emergency stop is machined while the guide rail is being installed in a hoistway. Further, a guide rail machining device having a machining tool for scraping off at least a portion of the braking surface is hung in the hoistway via a flexible hanging member, and as the braking surface is machined with the machining tool, the guide rail machining device is moved along the guide rail via the hanging member.

Description

Guide rail processing method for elevator, guide rail processing apparatus, and renewal method

The present invention relates to a guide rail processing method and a guide rail processing device for an elevator that performs processing on a guide rail installed in a hoistway, and an elevator renewal method including a process for processing the guide rail.

In a conventional elevator, a plurality of guide rails are efficiently processed with high accuracy and manufactured using a dedicated processing facility installed in a factory (see, for example, Patent Document 1).

Further, in the conventional elevator guide rail grinding apparatus, a frame is installed at the top of the car. The frame is provided with a grinder for grinding the guide rail. In addition, a plurality of rollers are respectively provided above and below the grinder of the frame (see, for example, Patent Document 2).

Furthermore, in the conventional guide rail cleaning device, a plurality of plate-like cleaning bodies in contact with the guide rails are attached to the cleaning body mounting member. A plurality of drive rollers are provided on the upper and lower sides of the cleaning body attachment member. A motor is connected to each of these drive rollers via a reduction mechanism (see, for example, Patent Document 3).

JP 2003-285216 Unexamined-Japanese-Patent No. 9-323873 gazette Japanese Utility Model Application Publication No. 2-15978

When replacing the existing car with a new car and replacing the existing car in the conventional elevator renewal work, the existing safety gear mounted on the existing car is also replaced with the new safety gear. In addition, the guide surface of the existing guide rail may be worn out by long-term contact with the guide device mounted in the existing car, and the coefficient of friction with the emergency stop device may be small. For this reason, when replacing an existing car with a new car, the existing guide rails can be replaced with the new guide rails.

However, in this case, removal of the existing guide rails, installation of a new guide rail, positioning of the new guide rails, and the like take much time, and the construction period becomes long. In addition, the cost is also high.

On the other hand, the conventional guide rail processing equipment shown in Patent Document 1 is an apparatus for manufacturing a new guide rail, and since it is installed in a factory, the existing guide rail is processed. If this is the case, it is necessary to remove the guide rails from the hoistway, transport them to the factory for processing, carry them into the hoistway and install them again, resulting in a long construction period.

Further, in the grinding apparatus of Patent Document 2, since the grinder is fixed to the car via the frame, the car travels through the car even though partial processing such as processing for scraping the step of the joint of the guide rails is possible. If it is attempted to continuously process the entire guide rail while making it move, the car can not be uniformly processed due to the influence of the vibration of the car.

Furthermore, the cleaning device of Patent Document 3 merely cleans the surface of the guide rail by the cleaning body, and can not optimize the friction coefficient of the worn guide rail to the safety gear.

The present invention has been made to solve the above problems, and an elevator guide that can further optimize the coefficient of friction of the guide rail with respect to the safety gear with the guide rail installed in the hoistway. An object of the present invention is to obtain a rail processing method, a guide rail processing apparatus, and a renewal method.

In the guide rail processing method of an elevator according to the present invention, the processing is performed in a state where the guide rail is installed in the hoistway with respect to the guide rail having the braking surface which the emergency stop device contacts at the time of emergency stop of the elevator The guide rail processing apparatus having a processing tool for scraping at least a part of the braking surface is suspended in the hoistway via a flexible suspension member, and The steps of contacting the processing tool, and moving the guide rail processing apparatus along the guide rail via the hanging member while processing the braking surface by the processing tool are included.
Further, a guide rail processing apparatus for elevators according to the present invention is a processing apparatus for processing a guide rail having a braking surface with which the emergency stop device contacts at the time of an emergency stop of the elevating body. A flexible suspension member connected and suspending the frame in the hoistway, and a processing tool provided on the frame and scraping off at least a part of the braking surface are provided.
Further, according to the present invention, there is provided a method of renewing an elevator comprising: an existing elevating body moving up and down in a hoistway, an existing safety gear mounted on the elevating body, and an elevator installed in the hoistway; A method of renewing an elevator having a braking surface with which an emergency stop device contacts at the time of an emergency stop and including an existing guide rail for guiding raising and lowering of an elevating body, which is at least one of the braking surfaces of the existing guide rail. The rail processing process which performs processing which scrapes off a part, and the replacement process which replaces an existing elevator body and an existing emergency stop device with a new elevator body and a new emergency stop device, leaving an existing guide rail.

According to the elevator guide rail processing method, guide rail processing apparatus, and renewal method of the present invention, the coefficient of friction of the guide rail with respect to the safety gear can be further optimized while the guide rail is installed in the hoistway.

It is a block diagram which shows the state in process of renewal work of the elevator by Embodiment 1 of this invention. FIG. 2 is a cross-sectional view of a car guide rail taken along the line II-II in FIG. It is a perspective view which shows the detailed structure of the guide rail processing apparatus of FIG. It is the perspective view which looked at the guide rail processing apparatus of FIG. 3 from the angle different from FIG. It is the perspective view which looked at the guide rail processing apparatus of FIG. 3 from the angle different from FIG.3 and FIG.4. FIG. 6 is a perspective view of the guide rail processing device of FIG. 3 as viewed from a different angle from FIGS. 3 to 5; It is a perspective view which shows the state which set the guide rail processing apparatus of FIG. 3 to the cage | basket guide rail. It is a perspective view which shows the state which set the guide rail processing apparatus of FIG. 4 to the cage | basket guide rail. It is a perspective view which shows the state which set the guide rail processing apparatus of FIG. 5 to the cage | basket guide rail. It is sectional drawing which shows the contact state of the processing tool of FIG. 7, and a cage | basket guide ray. It is sectional drawing which shows the contact state of the 1st and 2nd guide roller and 1st and 2nd pressing roller of FIG. 3, and a cage | basket guide rail. It is a flowchart which shows the guide rail processing method of Embodiment 1. FIG. It is a block diagram which shows the state of step S5 of FIG. 12 typically. It is a block diagram which shows the state of FIG.12 S6 typically. It is a block diagram which shows the state of step S8 of FIG. 12 typically. It is sectional drawing which shows the case where a pair of damping | braking surface of FIG. 11 is not mutually parallel. It is sectional drawing which shows the comparative example which made the outer peripheral surface of the press roller of FIG. 16 cylindrical. It is a block diagram which shows typically the principal part of the guide rail processing apparatus by Embodiment 2 of this invention. It is sectional drawing which shows the modification which made the outer peripheral part of the press roller of FIG. 11 the rubber part. FIG. 20 is a cross-sectional view showing a case where the pair of braking surfaces of FIG. 19 are not parallel to each other. It is a block diagram which shows the modification which each reduced the number of objects of the guide roller of FIG. 15, and a pressing roller. It is a block diagram which shows the modification made into the structure which pinches a guide part by the processing tool of FIG. 21, and a pressing roller. It is a block diagram which shows the modification which abbreviate | omitted the pressing roller of FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
Embodiment 1
FIG. 1 is a configuration diagram showing a state during renewal work of an elevator according to Embodiment 1 of the present invention. In the figure, in the hoistway 1, a pair of car guide rails 2 are installed. Each car guide rail 2 is configured by seaming a plurality of rail members in the vertical direction. Each car guide rail 2 is fixed to the hoistway wall via a plurality of rail brackets (not shown).

The elevator car 3 is disposed between the pair of car guide rails 2. In addition, the car 3 moves up and down in the hoistway 1 along the car guide rail 2.

The first end of the suspension 4 is connected to the top of the car 3. As the suspension body 4, a plurality of ropes or a plurality of belts are used. A counterweight (not shown) is connected to the second end of the suspension 4. The car 3 and the counterweight are suspended in the hoistway 1 by a suspension 4.

The middle part of the suspension 4 is wound around a drive sheave of a hoist (not shown). The car 3 and the counterweight move up and down in the hoistway 1 by rotating the drive sheave. In the hoistway 1, a pair of balance weight guide rails (not shown) for guiding raising and lowering of the balance weight are installed.

At the lower part of the car 3, a safety gear 5 is mounted. The emergency stop device 5 stops the car 3 by holding the pair of car guide rails 2.

Guide devices 6 in contact with the car guide rails 2 are respectively attached to the widthwise end portions of the upper portion of the car 3 and the widthwise end portions of the lower portion of the car 3. As each guide device 6, a sliding guide shoe or a roller guide device is used.

Below the car 3, a guide rail processing device 7 for processing the car guide rail 2 is provided. Although the guide rail processing apparatus 7 is shown as a simple box in FIG. 1, the detailed configuration will be described later.

The guide rail processing apparatus 7 is suspended in the hoistway 1 from the lower part of the car 3 via the flexible suspension member 8. For example, a rope, a wire or a belt is used as the hanging member 8. The guide rail processing device 7 is used when processing the car guide rail 2 installed in the hoistway 1 and is removed together with the suspending member 8 in normal operation.

FIG. 2 is a cross-sectional view of the car guide rail 2 taken along the line II-II in FIG. The car guide rail 2 has a bracket fixing portion 2a and a guide portion 2b. The bracket fixing portion 2a is a portion fixed to the rail bracket. The guide portion 2 b projects perpendicularly to the car 3 side from the center in the width direction of the bracket fixing portion 2 a and guides the raising and lowering of the car 3. Further, the guide portion 2 b is gripped by the safety gear 5 at the time of the emergency stop of the car 3.

Furthermore, the guide portion 2b includes a pair of braking surfaces 2c facing each other and a tip surface 2d. The end face 2d is an end face of the guide 2b opposite to the bracket fixing part 2a, that is, an end face on the car 3 side. The pair of braking surfaces 2c and the front end surface 2d function as guide surfaces with which the guide device 6 contacts during normal operation. Further, the pair of braking surfaces 2 c is a surface that the safety gear 5 contacts when the car 3 is in an emergency stop.

3 is a perspective view showing the detailed configuration of the guide rail processing apparatus 7 of FIG. 1, FIG. 4 is a perspective view of the guide rail processing apparatus 7 of FIG. 3 seen from an angle different from FIG. 3 and 4 and FIG. 6 is a perspective view of the guide rail processing device 7 of FIG. 3 as viewed from a different angle from FIGS.

The guide rail processing device 7 includes a frame 11, a connector 12, a processing tool 13, a drive device 14, a first guide roller 15, a second guide roller 16, a first pressing roller 17, a second pressing roller 18, A first end face roller 19 and a second end face roller 20 are provided.

The frame 11 has a frame main body 21 and a frame division body 22. The connector 12, the processing tool 13, the drive device 14, the first guide roller 15, the second guide roller 16, the first end surface roller 19 and the second end surface roller 20 are provided in the frame main body 21. ing.

The first pressing roller 17 and the second pressing roller 18 are provided in the frame divided body 22.

The connector 12 is provided at the upper end of the frame body 21. The hanging member 8 is connected to the connector 12.

The driving device 14 is disposed on the opposite side of the processing tool 13 of the frame main body 21. Further, the drive device 14 rotates the processing tool 13. For example, an electric motor is used as the drive device 14.

As the processing tool 13, for example, a cylindrical flat grindstone having a large number of abrasive grains provided on the outer peripheral surface is used, but a cutting tool or the like may be used. By rotating the processing tool 13 in a state where the outer peripheral surface of the processing tool 13 is in contact with the braking surface 2c, at least a part of the braking surface 2c, that is, a part or the entire surface can be scraped off. As a result, for example, the surface roughness of the braking surface 2c can be roughened, and the friction coefficient of the braking surface 2c with respect to the safety gear 5 can be made more appropriate.

When the braking surface 2 c is processed by the processing tool 13, processing waste is generated. The frame main body 21 is provided with a cover (not shown) for preventing the processing debris from being scattered around the guide rail processing device 7.

The first guide roller 15 and the second guide roller 16 are provided on the frame main body 21 side by side with the processing tool 13. The first guide roller 15 is disposed above the processing tool 13 and the second guide roller 16 is disposed below the processing tool 13 in a state where the processing tool 13 is in contact with one of the braking surfaces 2 c. The processing tool 13 is disposed between the first guide roller 15 and the second guide roller 16.

The first guide roller 15 and the second guide roller 16 contact the braking surface 2 c together with the processing tool 13 to bring the outer peripheral surface of the processing tool 13 into parallel contact with the braking surface 2 c. That is, the outer peripheral surface of the processing tool 13 is uniformly brought into contact with the braking surface 2 c in the entire width direction of the processing tool 13.

Two line segments that are contact portions with the braking surface 2c of the

guide rollers

15 and 16 and one line segment that is a contact portion with the braking surface 2c of the processing tool 13 can exist in one plane. Is set as.

The first pressing roller 17 sandwiches the guide portion 2 b with the first guide roller 15. The second pressing roller 18 sandwiches the guide portion 2 b with the second guide roller 16. That is, when the processing tool 13, the first guide roller 15, and the second guide roller 16 contact the braking surface 2c on the processing side, the first pressing roller 17 and the second pressing roller 18 are on the opposite side. Contact the braking surface 2c.

The rotational axes of the

rollers

13, 15, 16, 17, 18 are parallel to each other and horizontal when the car guide rail 2 is processed.

The first front end roller 19 is provided at the upper end of the frame body 21. The second front end surface roller 20 is provided at the lower end portion of the frame main body 21. The first front end surface roller 19 and the second front end surface roller 20 contact the front end surface 2 d when the car guide rail 2 is processed.

The frame divided body 22 is a pinching position where the guide portion 2b is pinched between the

guide rollers

15, 16 and the

pressing rollers

17, 18, and a release position where the

pressing rollers

17, 18 are farther from the

guide rollers

15, 16 than the pinching position. And linearly movable with respect to the frame body 21.

The frame main body 21 is provided with a pair of rod-like frame guides 23 for guiding the movement of the frame divided body 22 with respect to the frame main body 21. The frame guide 23 penetrates the frame division body 22.

A pair of rod fixing portions 24 is provided at upper and lower end portions of the frame main body 21. The frame divided body 22 is provided with a pair of facing portions 25 facing the rod fixing portion 24. A frame spring rod 26 is fixed to each rod fixing portion 24. Each frame spring rod 26 passes through the facing portion 25.

A frame spring receiver 27 is attached to the frame spring rod 26. A frame spring 28 is provided between the frame spring receiver 27 and the facing portion 25. Each frame spring 28 generates a force for moving the frame divided body 22 to the sandwiching position.

The pressing force of the

pressing rollers

17 and 18 by the frame spring 28 overcomes 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, and the outer peripheral surface of the

guide rollers

15 and 16 and braking The size is set so as to maintain the parallel with the surface 2c.

The pressing force of the

pressing rollers

17 and 18 by the frame spring 28 causes the outer periphery of the

guide rollers

15 and 16 also when the guide rail processing device 7 is moved along the car guide rail 2 while rotating the processing tool 13. The size is set so as to maintain the parallelism between the surface and the braking surface 2c.

A release position holding mechanism (not shown) is provided between the frame main body 21 and the frame divided body 22 for holding the frame divided body 22 in the release position against the spring force of the frame spring 28.

The processing tool 13 and the driving device 14 are linearly movable with respect to the frame main body 21 between the processing position and the separated position. The processing position is a position at which the processing tool 13 contacts the braking surface 2 c in a state where the

guide rollers

15 and 16 contact the braking surface 2 c. The separated position is a position at which the processing tool 13 is separated from the braking surface 2 c in a state where the

guide rollers

15 and 16 are in contact with the braking surface 2 c.

As described above, the

pressing rollers

17 and 18 are movable in the direction perpendicular to the braking surface 2c. The processing tool 13 and the drive device 14 are also movable in the direction perpendicular to the braking surface 2c.

As shown in FIG. 4, the drive device 14 is attached to a flat movable support member 29. A pair of rod-shaped drive device guides 30 are fixed to the frame body 21. The movable support member 29 is slidable along the drive guide 30. Thereby, the processing tool 13 and the driving device 14 are linearly movable with respect to the frame main body 21.

Between the movable support member 29 and the frame main body 21, there is provided a processing tool spring 31 which generates a force for moving the processing tool 13 and the driving device 14 to the processing position side. The pressing force of the processing tool 13 by the processing tool spring 31 is set to a magnitude that does not cause a problem such as chattering.

Between the frame main body 21 and the movable support member 29, there is provided a separated position holding mechanism (not shown) for holding the processing tool 13 and the drive device 14 in the separated position against the spring force of the processing tool spring 31. It is done.

7 is a perspective view showing the guide rail processing device 7 of FIG. 3 set in the car guide rail 2, and FIG. 8 is a perspective view showing the guide rail processing device 7 of FIG. FIG. 9 is a perspective view showing the guide rail processing apparatus 7 of FIG. 5 set in the car guide rail 2.

FIG. 10 is a cross-sectional view showing a state of contact between the processing tool 13 of FIG. 7 and the car guide rail 2. The width dimension of the outer peripheral surface of the processing tool 13 is larger than the width dimension of the braking surface 2c. Thereby, the processing tool 13 is in contact with the whole of the braking surface 2c in the width direction.

FIG. 11 is a cross-sectional view showing the contact between the first and

second guide rollers

15 and 16 and the first and second

pressing rollers

17 and 18 of FIG. The outer peripheral surfaces of the first and

second guide rollers

15 and 16 are cylindrical. That is, the shapes of the outer peripheral surfaces of the first and

second guide rollers

15 and 16 in a cross section along the rotation center C1 of the first and

second guide rollers

15 and 16 are straight lines.

The outer peripheral surfaces of the first and second

pressing rollers

17 and 18 are substantially spherical. That is, the shape of the outer peripheral surface of the first and second

pressing rollers

17 and 18 in a cross section along the rotation center C2 of the first and second

pressing rollers

17 and 18 is an arc shape.

Next, FIG. 12 is a flowchart showing the guide rail processing method of the first embodiment. When the car guide rail 2 is processed by the guide rail processing device 7, first, a control device (not shown) for controlling the guide rail processing device 7 and a power supply (not shown) are carried into the car 3 (step S1). Further, the guide rail processing device 7 is carried into the pit of the hoistway 1 (step S2).

Subsequently, the car 3 is moved to the lower part of the hoistway 1, and the guide rail processing device 7 is connected to the car 3 via the suspending member 8 and suspended in the hoistway 1 (step S3). Further, the guide rail processing device 7 is connected to the control device and the power supply (step S4). Then, the guide rail processing device 7 is set to the car guide rail 2 (steps S5 to S6).

Specifically, as shown in FIG. 13, with the processing tool 13 held at the separated position and the frame divided body 22 held at the released position, the

guide rollers

15, 16 are brought into contact with one of the braking surfaces 2c. (Step S5). Further, the leading

end surface rollers

19 and 20 are brought into contact with the leading end surface 2d.

Thereafter, as shown in FIG. 14, the frame divided body 22 is moved to the sandwiching position (step S6), and the guide portion 2b is sandwiched between the

guide rollers

15 and 16 and the

pressing rollers

17 and 18.

After the guide rail processing device 7 is thus set on the car guide rail 2, the processing tool 13 is rotated (step S7). Then, as shown in FIG. 15, the processing tool 13 and the driving device 14 are moved to the processing position, and the car 3 is moved to the top floor at a lower speed than the rated speed (step S8). That is, the guide rail processing device 7 is moved along the car guide rail 2 while processing the braking surface 2 c by the processing tool 13. When the car 3 arrives at the top floor, the processing tool 13 and the drive unit 14 are moved to the separated position (step S9). In addition, the rotation of the processing tool 13 is stopped, and the car 3 is stopped (step S10).

Thereafter, while moving the car 3 to the lowest floor, the processing amount is measured (step S11). In this example, the braking surface 2c is processed only when the car 3 is lifted, so it is preferable to keep the processing tool 13 away from the braking surface 2c when the car 3 is lowered. The measurement of the processing amount is performed, for example, by measuring the thickness dimension of the guide portion 2b or measuring the surface roughness of the braking surface 2c.

When the car 3 arrives at the lower floor, it is checked whether the amount of processing has reached a preset value (step S12). If the amount of processing is insufficient, the guide portion 2b is sandwiched between the

guide rollers

15 and 16 and the

pressing rollers

17 and 18, and steps S7 to 12 are performed again. If the amount of processing is sufficient, processing is complete.

When processing is performed on the braking surface 2c on the opposite side, the guide rail processing device 7 which is symmetrical to that in FIG. 3 may be used, or the guide rail processing device 7 in FIG. In the latter case, the connector 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, it is possible to process all the braking surfaces 2c. Further, it is possible to simultaneously process the two or more braking surfaces 2 c by two or more guide rail processing devices 7.

Next, the elevator renewal method according to the first embodiment will be described. In the first embodiment, the existing car 3 and the existing safety gear 5 are replaced with a new car and a safety gear, while leaving the existing car guide rails 2.

Specifically, at least a part of the braking surface 2c of the existing car guide rail 2 is scraped off using the guide rail processing device 7 as described above (rail machining step). At this time, the guide rail processing device 7 is connected to the existing car 3 via the suspending member 8, and the guide rail processing device 7 is moved along the existing car guide rail 2 by the movement of the existing car 3.

Thereafter, the existing car 3 and the existing safety gear 5 are replaced with a new car and a new safety gear (replacement process) while leaving the existing car guide rails 2.

In the guide rail processing method and guide rail processing apparatus 7 as described above, the guide rail processing apparatus 7 is suspended in the hoistway 1 via the flexible suspension member 8 and processed into the braking surface 2 c by the processing tool 13. The guide rail processing device 7 is moved along the car guide rail 2 while performing the operation, so the coefficient of friction of the car guide rail 2 with respect to the safety gear 5 is further optimized while the car guide rail 2 is installed in the hoistway 1 be able to.

Further, the braking surface 2c can be machined uniformly over substantially the entire length of the car guide rail 2.

Furthermore, since the guide rail processing device 7 is suspended via 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 processing of the braking surface 2c. Thereby, generation | occurrence | production of a process defect can be prevented and the damping | braking surface 2c can be processed stably.

Furthermore, since the guide rail processing device 7 is suspended from the car 3, there is no need to separately prepare a device for lifting the guide rail processing device 7. Moreover, it can process efficiently in the area | region which the safety gear 5 of the cage | basket guide rail 2 grips. Furthermore, even in an elevator with a long lifting stroke, machining can be easily performed over substantially the entire length of the car guide rail 2 without using a long suspension member.

Moreover, since the

guide rollers

15 and 16 are provided in the guide rail processing apparatus 7, the outer peripheral surface of the processing tool 13 can be more reliably brought into parallel contact with the braking surface 2c, and the braking surface is not generated. It is possible to process 2c evenly.

Furthermore, since the guide portion 2b is sandwiched between the

guide rollers

15, 16 and the

pressing rollers

17, 18, the outer peripheral surface of the processing tool 13 can be more stably brought into contact with the braking surface 2c in parallel. Further, even when the braking surface 2c is inclined in the vertical direction, the parallel between the outer peripheral surface of the processing tool 13 and the braking surface 2c can be maintained.

Furthermore, since the connector 12 is provided to the frame main body 21, the guide rail processing device 7 is mounted on the car guide rail 2 in a state where the suspension member 8 is connected to the connector 12 and suspended in the hoistway 1. Can be moved along the Thus, the coefficient of friction of the car guide rail 2 with respect to the safety gear 5 can be made more appropriate while the car guide rail 2 is installed in the hoistway 1.

Further, since the first guide roller 15 is disposed above the processing tool 13 and the second guide roller 16 is disposed below the processing tool 13, the outer peripheral surface of the processing tool 13 and the braking surface 2c are parallel to each other. Can be maintained more stably. Accordingly, even when the car guide rail 2 is inclined, bent or undulated in the vertical direction, the parallel between the outer peripheral surface of the processing tool 13 and the braking surface 2 c can be maintained.

Furthermore, since the processing tool 13 is disposed at an intermediate position between the first and

second guide rollers

15 and 16, the moving direction of the processing tool 13 with respect to the frame main body 21 can be made perpendicular to the braking surface 2c. . Thereby, the force which presses the processing tool 13 on the braking surface 2c can be stabilized. Also, stable processing can be performed without occurrence of processing unevenness, that is, unevenness of the amount to be removed.

Furthermore, since the frame 11 is divided into the frame main body 21 and the frame divided body 22 and the frame spring 28 generates a force for moving the frame divided body 22 to the sandwiching position side, the

guide rollers

15 and 16 can be simplified by the simple configuration. The guide portion 2 b can be stably sandwiched between the pressure roller 17 and the

pressing rollers

17 and 18.

In addition, since the processing tool 13 and the driving device 14 can be moved between the processing position and the separated position, and the processing tool spring 31 generates a force to move the processing tool 13 and the driving device 14 to the processing position side, According to the configuration, the processing tool 13 can be stably pressed against the braking surface 2c, and stable processing can be performed. In addition, by moving the processing tool 13 to the separated position, the guide rail processing device 7 can be moved along the car guide rail 2 without processing the braking surface 2 c.

Furthermore, since the front

end surface rollers

19 and 20 are provided on the frame main body 21, the guide rail processing device 7 can be smoothly moved along the car guide rail 2 in a stable posture.

Furthermore, the outer peripheral surface of the

guide rollers

15 and 16 is cylindrical, and the outer peripheral surface of the

pressing rollers

17 and 18 has a circular arc shape, so that the outer peripheral surface of the

guide rollers

15 and 16 and the braking surface 2c It is automatically adjusted to be parallel.

Thus, for example, as shown in FIG. 16, even when the braking surface 2c on the processing side and the braking surface 2c on the opposite side are not parallel, the outer peripheral surface of the processing tool 13 and the braking surface 2c on the processing side are parallel. Can be maintained more reliably.

On the other hand, as shown in FIG. 17, when the outer peripheral surfaces of the

pressing rollers

17 and 18 are cylindrical, the outer peripheral surfaces of the

pressing rollers

17 and 18 are parallel to the braking surface 2c on the opposite side. The outer peripheral surfaces of the

rollers

15 and 16 are inclined with respect to the braking surface 2c to be processed, and the processing tool 13 may also be inclined with respect to the braking surface 2c. However, if the pair of braking surfaces 2c are parallel to each other, the outer peripheral surfaces of the

pressing rollers

17 and 18 may be cylindrical.

In the elevator renewal method as described above, after at least a part of the braking surface 2c of the existing car guide rail 2 is scraped off, the existing car 3 and the existing car guide rail 2 are left while the existing car guide rail 2 is left. Since the existing safety gear 5 is replaced with a new car and a new safety gear, the coefficient of friction of the existing car guide rail 2 with respect to the new safety gear is maintained while the car guide rail 2 is installed in the hoistway 1 It can be made more appropriate. As a result, the elevator can be renewed without replacing the existing car guide rail 2, and the construction period can be significantly shortened, and the cost for the construction can also be significantly reduced.

Furthermore, in the rail processing step, the guide rail processing device 7 is suspended in the hoistway 1 via the flexible suspension member 8 and the guide rail via the suspension member 8 while the processing tool 13 is rotated. Since the processing device 7 is moved along the car guide rail 2, the braking surface 2 c can be stably processed over substantially the entire length of the car guide rail 2.

Furthermore, since the guide rail processing device 7 is moved using the existing cage 3, it is possible to prevent adhesion of machining debris and the like generated at the time of processing to the new cage and the new safety device 5.

Second Embodiment
Next, FIG. 18 is a schematic block diagram which shows the principal part of the guide rail processing apparatus by Embodiment 2 of this invention. Between the processing tool 13 of the frame main body 21 and the

guide rollers

15, 16, there is provided a cleaning body 32 which is in contact with the braking surface 2c on the side to be processed and removes machining debris from the braking surface 2c.

Moreover, in this example, the cleaning body 32 contacting the braking surface 2c on the opposite side is also provided at the position of the frame divided body 22 facing the cleaning body 32. For example, a cloth-like member is used as the cleaning body 32. Other configurations, processing methods and renewal methods are the same as in the first embodiment.

By using such a cleaning body 32, it is possible to prevent cutting debris from entering between the

guide rollers

15 and 16 and the braking surface 2 c, and the parallel of the outer peripheral surface of the processing tool 13 and the braking surface 2 c It can be maintained more reliably. Further, the

guide rollers

15, 16, the

pressing rollers

17, 18, and the braking surface 2c can be prevented from being damaged by machining debris.

An effect similar to that of the second embodiment can also be obtained by providing a suction port on the frame or the cover and processing it while collecting dust from processing dust using a dust collector such as a vacuum cleaner.

Furthermore, instead of making the cross-sectional shape of the outer peripheral surface of the

pressing rollers

17 and 18 arc-shaped, self-aligning roller bearings may be adopted for bearings (not shown) attached to the

pressing rollers

17 and 18 The same effect as in the case where the cross-sectional shape is arc-shaped can be obtained.

Further, instead of making the cross-sectional shape of the outer peripheral surface of the

pressing rollers

17 and 18 arc-shaped, for example, as shown in FIG. 19, the outer peripheral portion of the

pressing rollers

17 and 18 may be made of a material having rubber elasticity. The same effect as in the case where the cross-sectional shape is arc-shaped can be obtained. In FIG. 19, each

pressing roller

17, 18 has a roller body 34 and a cylindrical rubber portion 35 covering the outer periphery of the roller body 34.

The rubber portion 35 is made of an elastic material having a Young's modulus smaller than that of the material of the roller main body 34 and the materials of the

guide rollers

15 and 16. As the elastic body, a material having rubber elasticity, for example, a urethane rubber having a hardness of 50 is used.

With such a configuration, for example, as shown in FIG. 20, the rubber portion 35 deforms along the inclination of the braking surface 2c even when the braking surface 2c on the processing side and the braking surface 2c on the opposite side are not parallel. Thus, the outer peripheral surface of the

guide rollers

15 and 16 is automatically adjusted to be parallel to the braking surface 2c.

Also, one or three or more guide rollers may be provided. Along with this, the pressing roller may be one or three or more. For example, as shown in FIG. 21, the guide portion 2b may be sandwiched by one guide roller 15 and one pressing roller 17.

Furthermore, the guide roller and the pressing roller may be omitted as long as the processing tool can be stably applied in parallel to the braking surface.
For example, FIG. 22 shows a configuration in which the guide portion 2 b is sandwiched by the processing tool 13 and the pressing roller 17. Also with such a configuration, the processing tool 13 can be applied in parallel to the braking surface 2c.
Further, FIG. 23 shows a configuration in which the frame divided body and the pressing roller are omitted and the frame main body 21 is pressed toward the guide portion 2 b by the pair of frame main body springs 33. Also with such a configuration, the processing tool 13 can be applied in parallel to the braking surface 2c.

Furthermore, the rotational axis of the processing tool and the rotational axis of the guide roller may not necessarily be parallel.
Further, in the above-described example, the force for pressing the processing tool and the pressing roller against the braking surface is generated by a spring, but may be generated by, for example, a pneumatic cylinder, a hydraulic cylinder, or an electric actuator.
Furthermore, the connector may be integrally formed on the frame.

Furthermore, in the above-mentioned example, although processing was given to a braking surface, raising a guide rail processing device, processing may be given to a braking surface, lowering a guide rail processing device.
In the above example, the guide rail processing apparatus is suspended from the existing car, but may be suspended from a new car.
Furthermore, in the above example, the guide rail processing apparatus is suspended from the car, but for example, the guide rail processing apparatus may be suspended from a lifting device such as a winch installed at the top of the hoistway. The moving speed of can be set more freely.

Furthermore, in the above example, the elevating body is a car and the processing target is a car guide rail. However, according to the present invention, the elevating body is a counterweight and the processing target is a counterweight guide rail It is applicable also when it is. For example, when the safety gear 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 processed at the time of renewal work, but for example, when it is desired to adjust the surface roughness of the braking surface in a new elevator, or to refresh the braking surface when maintaining an existing elevator Also in the case, the guide rail processing apparatus and guide rail processing method of the present invention can be applied.
Furthermore, the present invention can be applied to various types of elevators, such as elevators having a machine room, machine room-less elevators, double deck elevators, and one-shaft multicar elevators. The one-shaft multicar system is a system in which the upper car and the lower car placed immediately below the upper car move up and down the common hoistway independently of one another.

DESCRIPTION OF SYMBOLS 1 hoistway, 2 car guide rail, 2c braking surface, 2d front end surface, 3 car (lifting body), 5 emergency stop device, 7 guide rail processing device, 8 hanging member, 11 frame, 13 processing tool, 14 drive device , 15 first guide roller, 16 second guide roller, 17 first pressing roller, 18 second pressing roller, 19 first leading end surface roller, 20 second leading end surface roller, 21 frame main body, 22 Frame division body, 28 frame spring, 31 processing tool spring, 32 cleaning body.

Claims

A guide rail processing method for an elevator, which performs processing in a state in which the guide rail is installed in a hoistway with respect to a guide rail having a braking surface with which an emergency stop device contacts at the time of emergency stop of the elevator. ,
A guide rail processing apparatus having a processing tool for scraping at least a part of the braking surface is suspended in the hoistway via a flexible suspension member, and the processing tool is in contact with the braking surface. A method for processing a guide rail of an elevator, comprising: moving the guide rail processing apparatus along the guide rail via the suspension member while processing the braking surface with the processing tool.
The elevator according to claim 1, wherein the guide rail processing device is connected to the elevating body via the suspension member, and the guide rail processing device is moved along the guide rail by movement of the elevating body. Method.
The guide rail processing apparatus further includes a drive device for rotating the processing tool,
The method for processing a guide rail of an elevator according to claim 1 or 2, wherein the guide rail processing device is moved along the guide rail in a state where the processing tool is in contact with the braking surface.
The processing tool is cylindrical,
The guide rail processing apparatus further includes a guide roller that brings the outer peripheral surface of the processing tool into parallel contact with the braking surface by contacting the braking surface side by side with the processing tool.
The guide rail processing of an elevator according to claim 3, wherein the guide rail processing device is moved along the guide rail in a state where the outer peripheral surface of the processing tool and the outer peripheral surface of the guide roller are in contact with the braking surface. Method.
The guide rail processing apparatus further includes a pressing roller for sandwiching the guide rail with the guide roller,
The method for processing a guide rail of an elevator according to claim 4, wherein the guide rail processing device is moved along the guide rail in a state in which the guide rail is sandwiched between the guide roller and the pressing roller.
An elevator guide rail processing device for processing a guide rail having a braking surface with which an emergency stop device contacts at the time of an emergency stop of a lift body,
flame,
A guide for an elevator comprising: a flexible suspension member connected to the frame for suspending the frame in a hoistway; and a processing tool provided on the frame for scraping at least a portion of the braking surface Rail processing equipment.
7. The guide rail processing apparatus for an elevator according to claim 6, further comprising a drive device for rotating the processing tool.
The processing tool is cylindrical,
A guide roller which is provided on the frame side by side with the processing tool and which brings the outer peripheral surface of the processing tool into parallel contact with the braking surface by contacting the braking surface with the processing tool. The guide rail processing apparatus of the elevator according to 7.
The guide roller is a first guide roller disposed above the processing tool and a second guide roller disposed below the processing tool, with the processing tool in contact with the braking surface. The guide rail processing apparatus for an elevator according to claim 8, further comprising:
The guide rail processing apparatus for an elevator according to claim 8 or 9, further comprising: a pressing roller provided on the frame and sandwiching the guide rail between the frame and the guide roller.
The outer peripheral surface of the guide roller is cylindrical,
The guide rail processing device for an elevator according to claim 10, wherein a shape of an outer peripheral surface of the pressing roller in a cross section along a rotation center of the pressing roller is an arc shape.
The outer peripheral surface of the guide roller is cylindrical,
The elevator guide rail processing apparatus according to claim 10, wherein an outer peripheral portion of the pressing roller is made of a material having rubber elasticity.
The frame is
A frame body provided with the processing tool, the driving device, and the guide roller;
And a frame division body provided with the pressing roller;
The frame division body is a frame between a holding position where the guide rail is held between the guide roller and the pressing roller, and a release position where the pressing roller is separated from the guide roller than the holding position. It is movable with respect to the main body,
The guide rail processing device for elevators according to any one of claims 10 to 12, wherein the frame is provided with a frame spring which generates a force for moving the frame divided body to the sandwiching position side. .
The processing tool and the drive device are arranged between a processing position at which the processing tool is in contact with the braking surface and a separation position at which the processing tool is away from the braking surface, with the guide roller in contact with the braking surface. , Is movable with respect to the frame,
The elevator according to any one of claims 8 to 13, wherein the frame is provided with a processing tool spring that generates a force for moving the processing tool and the drive device to the processing position side. Guide rail processing device.
The guide rail processing apparatus for an elevator according to any one of claims 6 to 14, further comprising: a tip end surface roller provided on the frame and in contact with a tip end surface on the elevator body side of the guide rail. .
The elevator guide according to any one of claims 6 to 15, further comprising: a cleaning body provided on the frame and contacting the braking surface to remove work debris from the braking surface. Rail processing equipment.
An existing lifting body that moves up and down in the hoistway,
It has an existing safety gear mounted on the elevating body, and a braking surface installed in the hoistway and in contact with the safety restraining device when the existing elevating body is stopped in an emergency. It is a renewal method of the elevator provided with the existing guide rail which guides raising / lowering of the said raising / lowering body, Comprising:
A rail processing step for scraping at least a part of the braking surface of the existing guide rail, and a lifting and lowering body for the existing lifting body and the existing safety gear while leaving the existing guide rail. How to renew the elevator, including a replacement process to replace body and new safety gear.
The rail processing step is
A guide rail processing apparatus having a processing tool and a drive device for rotating the processing tool is suspended in the hoistway via a flexible suspension member, and the processing tool is mounted on the braking surface The elevator renewal method according to claim 17, comprising: contacting an outer peripheral surface of the guide, and moving the guide rail processing apparatus along the guide rail via the suspension member while rotating the processing tool. .
In the step of moving the guide rail processing device along the guide rail, the guide rail processing device is connected to the existing elevating body via the suspension member, and the guide rail is moved by the movement of the existing elevating body. The elevator renewal method according to claim 18, wherein the processing device is moved along the guide rail.