JP2008087132A - Rope groove processing device for elevator and processing method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rope groove processing device for an elevator capable of applying reproduction processing on a rope groove formed on a driving sheave or the like within a short time and of preventing the serviceability of the elevator from degrading. <P>SOLUTION: This rope groove processing device for an elevator includes: a mounting part 8 removably provided on the fixing body 5 of the elevator; a processing part 9 disposed so as to face the rope groove portion of a rope groove 4a formed on the driving sheave 4, on which a main rope 2 for suspending the car 1 of the elevator is not wound; and a movable supporting part 13 installed on the mounting part for movably supporting the processing part in the rotating shaft direction and the radial direction of the driving sheave. The processing part with a rotary type grinding tool 10 for removing the rope groove is fixed so that the rotary axis 16 of the grinding tool is at an angle of roughly 30°with respect to a tangential line 17 from the processing point on the driving sheave. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator rope groove processing apparatus and a processing method thereof that efficiently regenerates a rope groove formed on a drive sheave or a deflector of an elevator hoist.

  A conventional elevator rope grooving apparatus is shown in FIGS. FIG. 15 is a schematic configuration diagram showing a general elevator arrangement configuration, FIG. 16 is a schematic configuration diagram showing a configuration of a drive sheave of an elevator hoist, and FIG. 17 is a conventional rope sheave of a drive sheave with advanced wear. FIG. 18 is a schematic configuration diagram showing a state of completion of processing.

In FIG. 15, 1 is an elevator car, 2 is a main rope for suspending the car 1, and one end is fixed to the car 1. 3 is a counterweight, and the other end of the main rope 2 is fixed. Reference numeral 4 denotes a driving sheave for a hoist installed in a machine room or the like, on which a main rope 2 is wound. Reference numeral 5 denotes a fixed body that fixes the driving sheave 4 and the driving machine of the hoisting machine. Denoted at 6 is a deflecting wheel for adjusting the suspension position of the car 1 and the counterweight 3, on which the main rope 2 is wound. This deflecting wheel 6 is also fixed to the fixed body 5.
As shown in FIG. 16, the drive sheave 4 is formed with a plurality of rope grooves 4 a for winding the main rope 2. Further, the rope guide 6 is also provided with a rope groove for guiding the rope (not shown) as in the case of the drive sheave 4 in FIG.

  In the elevator hoisting machine configured as described above, the driving sheave 4 is rotated by the power of the hoisting machine drive, so that it is driven by the frictional force generated between the main rope 2 and the rope groove 4a. The main rope 2 moves in conjunction with the rotation of the sheave 4 and raises and lowers the car 1. Here, since the rope groove 4a gradually wears due to a minute slip of the main rope 2, etc., the desired frictional force cannot be obtained due to the long-term operation of the elevator, and the driving force is efficiently transmitted. There was a problem that it was impossible.

Generally, a plurality of main ropes 2 are used in an elevator for safety. The progress of wear of the rope grooves 4a corresponding to these main ropes 2 is different for each rope groove 4a as shown in FIG. For this reason, a difference occurs in the diameter 4b of the rope groove 4a, and the amount of movement of each main rope 2 is different. However, since both ends of the main rope 2 are fixed to the car 1 and the counterweight 3, respectively, slip occurs between the main rope 2 and the rope groove 4a so that the movement amounts are equal. This slip has a problem that the car 1 is vibrated and deteriorates the ride comfort.
Conventionally, when the wear of the rope groove 4a of the driving sheave 4 progresses, as a countermeasure, as shown in FIG. 17, a regenerating process for correcting the rope groove 4a so as to align the diameter 4b of the rope groove 4a has been performed. It was.
FIG. 17 is a schematic configuration diagram showing a case where the rope groove of the drive sheave in which wear has progressed is reprocessed by the conventional rope groove processing apparatus 30. In the figure, 31 is a fixed portion of a conventional groove machining device 30 fixed to the fixed body 5, 32 is an axial movement device that enables the drive sheave 4 to move in the direction of the rotation axis, and 33 is a drive sheave. 4 is a turning tool (tool) attached to the tip of the radial moving device 33.

  The procedure of the rope groove processing by the conventional rope groove processing apparatus 30 will be described. When the rope groove 4a of the drive sheave 4 that has been worn is regenerated by the conventional rope groove processing device 30, the main rope 2 is first removed from the rope groove 4a of the drive sheave 4 and the rope groove processing device 30 is removed. Install on the fixed body 6. Next, the center of the turning tool 34 and the center of the rope groove 4 a are aligned by the axial direction moving device 32. Here, the driving sheave 4 is rotated by the driving machine of the hoisting machine. Finally, the turning tool 34 is sent out at a constant speed toward the center of the rope groove 4a by the radial mover 33, and the turning process for regenerating the rope groove 4a is performed. In this case, it is necessary to process all the rope grooves according to the diameter 4b of the rope groove 4a where the wear is most advanced. The machining completion state is shown in FIG. The groove depth after the groove correction processing of FIG. 18 becomes deeper than the depth of the rope groove 4a before the elevator operation shown in FIG.

  Further, as a prior art, there is known an apparatus for measuring the shape of an engagement groove of a grooved wheel that has an engagement groove around which a main rope is wound and is driven to rotate by a hoisting machine ( For example, see Patent Document 1).

Japanese Patent Laid-Open No. 11-6716

  As described above, the conventional rope groove processing device 30 has a problem that the operation of the elevator has to be stopped for a long time because it is necessary to remove the main rope 2 from the drive sheave 4. This stop period is usually required for about one week, which is a major factor in reducing service. Further, when the baffle 6 is provided, the rope groove of the baffle 6 also wears, causing vibration in the car 1 and deteriorating the riding comfort. However, once the main rope 2 is removed from the baffle wheel 6, there is no means for driving it, so the rope groove cannot be regenerated. Therefore, the operation of the elevator must be stopped for a long period of time, and the deflecting car itself must be replaced, which has been a significant cost increase and service reduction factor.

  Further, the groove shape measuring device for a conventional grooved wheel can be efficiently reprocessed without removing the main rope from the drive sheave, and can be reprocessed even with a sled wheel without a driving means. It is not considered to be.

  The present invention has been made to solve the above-described problems, and the purpose thereof is to enable a short-term reproduction of a rope groove formed on a driving sheave or the like, and to prevent a decrease in elevator service. It is to provide an elevator rope groove processing apparatus.

  An elevator rope groove processing apparatus according to the present invention is configured such that a main rope that suspends an elevator car is wound around an attachment portion that is detachably provided on a fixed body of an elevator and a rope groove formed on a drive sheave. A machining portion disposed so as to be opposed to the rope groove portion that is not, and a movable support portion that is provided on the attachment portion and supports the machining portion so as to be movable in the rotational axis direction and the radial direction of the driving sheave. The part has a rotary grinding wheel for removing the rope groove, and the rotation axis of the grinding wheel forms an angle of approximately 30 degrees with the tangent from the processing point on the driving sheave. It is fixed.

  The elevator rope groove processing apparatus according to the present invention includes a mounting portion that is detachably provided on a fixed body of the elevator, and a main rope that suspends the elevator car among the rope grooves formed on the deflector. A machining portion disposed so as to face the rope groove portion that is not provided, and a movable support portion that is provided on the attachment portion and supports the machining portion so as to be movable in the rotation axis direction and the radial direction of the vehicle. The section has a rotary grinding wheel for removing the rope groove, and the rotation axis of the grinding wheel forms an angle of approximately 30 degrees with the tangent line from the processing point on the deflector wheel. It is fixed.

  Further, an elevator rope groove processing apparatus according to the present invention includes a dust collector that collects processing powder generated when a rope groove formed on a driving sheave or a deflector is removed by a processing unit. The dust collection port is disposed on an extension of the tangent line from the processing end point of the grinding wheel.

  Further, an elevator rope groove processing apparatus according to the present invention includes a position measuring device that measures a relative position in a radial direction between a reference surface formed on a driving sheave or a deflector wheel and a mounting portion, and a radial direction of the processing portion. And an arithmetic unit that sets the feed amount based on the measured value of the position measuring device.

  Further, the elevator rope grooving apparatus according to the present invention sets a temperature measuring device for measuring the temperature of the grinding wheel in the processing portion, and the radial feed amount of the processing portion based on the measured value of the temperature measuring device. And an arithmetic unit for performing the above.

  In addition, an elevator rope grooving apparatus according to the present invention includes a load measuring apparatus that measures a grinding load of a processed part, and a calculation that sets a feed amount in the radial direction of the processed part based on a measurement value of the load measuring apparatus. Device.

  Moreover, the elevator rope groove processing apparatus according to the present invention has a plurality of grinding wheels for the processing portion.

  Also, the elevator rope groove machining method according to the present invention includes a mounting portion that is detachably provided on a fixed body of the elevator and a main rope that suspends the elevator car among the rope grooves formed on the drive sheave. A processing portion arranged to face the rope groove portion that is not hung, and a movable support portion that is provided on the attachment portion and supports the processing portion so as to be movable in the rotational axis direction and the radial direction of the driving sheave. The processing section has a rotary grinding wheel for removing the rope groove, and the rotation axis of the grinding wheel forms an angle of approximately 30 degrees with the tangent from the processing point on the driving sheave. In the elevator rope groove processing fixed in this way, the rope groove is removed by rotating the driving sheave while the main rope is wound and rotating the grinding wheel. That.

  The elevator rope groove processing method according to the present invention includes a mounting portion that is detachably provided on a fixed body of the elevator and a main rope that suspends the elevator car among the rope grooves formed on the deflector. A machining portion disposed so as to face the rope groove portion that is not provided, and a movable support portion that is provided on the attachment portion and supports the machining portion so as to be movable in the rotation axis direction and the radial direction of the vehicle. The part has a rotary grinding wheel that removes the rope groove, and the rotation axis of the grinding wheel is fixed so that it forms an angle of approximately 30 degrees with the tangent from the machining point on the baffle wheel. In rope grooving of a lifted elevator, the rope sheave is removed by rotating the driving sheave and the deflecting wheel while the main rope is wound and rotating the grinding wheel. It is intended to engineering.

  Moreover, the rope groove processing method for an elevator according to the present invention includes a dust collector that collects the processing powder generated when the rope groove formed in the drive sheave or the deflector is removed by the processing unit, and the dust collector of the dust collector The dust collection port is placed on the tangential line extending from the processing end point of the grinding wheel, and the generated dust is collected by the dust collection port by operating the dust collector simultaneously with the rotation of the driving sheave and the grinding wheel. Is.

  According to the present invention, by fully drawing out the performance of the grinding wheel, the rope groove formed in the drive sheave can be corrected efficiently in a short time, and the service of the elevator can be prevented from being lowered. In addition, by sufficiently drawing out the performance of the grinding wheel, it is possible to efficiently perform correction processing of the rope groove formed in the deflecting wheel in a short time, and to prevent a decrease in service of the elevator. In addition, by making it possible to reliably collect the processing powder generated by removal processing in the air in the state of dust, it is possible to prevent the processing powder from adhering to the main rope and the rope groove. Deterioration of processing accuracy (intrusion into the sliding surface of the movable support portion, clogging of the grindstone surface, etc.) can also be prevented. As a result, the efficiency of the cleaning operation during and after the processing is greatly improved, and the correction processing operation can be performed in a short time. In addition, it is possible to prevent adverse effects (such as bite scratches and a decrease in processing efficiency) on processing due to unauthorized rotation motion of the driving sheave and the bearing of the deflector wheel. In particular, it is effective for stabilizing the feed amount, and the required groove depth can be reliably realized. As a result, correction processing can be performed more efficiently. In addition, it is possible to prevent adverse effects on the processing due to thermal expansion of the grindstone and the grindstone shaft (biting scratches and overload abnormal stop). In particular, it is effective for stabilizing the life of the grinding wheel, the frequency of tool change can be suppressed, and the work time can be shortened by greatly reducing the tool change cost and the tool change time. As a result, correction processing can be performed more efficiently. In addition, it is possible to cope with a sudden machining abnormality due to clogging of a grindstone or biting of a foreign substance, and to prevent a device failure due to a bite or overload. In particular, by maximizing the capacity of a grinding wheel drive device (motor, etc.), it is effective for high-efficiency stabilization of the processing efficiency, and shortens the actual processing time. As a result, correction processing can be performed more efficiently.

Embodiment 1.
1 is a schematic configuration diagram of an elevator apparatus showing a state where an elevator rope grooving apparatus according to Embodiment 1 of the present invention is attached, and FIG. 2 is a side view of the elevator rope grooving apparatus according to Embodiment 1 of the present invention. 3 is a side view for explaining the movable state of the movable support portion of the rope groove processing apparatus according to Embodiment 1 of the present invention. FIG. 4 is a movable support of the rope groove processing apparatus according to Embodiment 1 of the present invention. FIG. 5 is a side view when the angle formed by the rotation axis of the processing portion and the tangent line at the processing point on the driving sheave is 30 degrees, and FIG. 6 is the side view of the processing portion. FIG. 7 is a front view when the angle formed between the rotation axis and the tangent at the machining point on the drive sheave is 30 degrees, and FIG. 7 shows the angle formed between the rotation axis of the machining unit and the tangent at the machining point on the drive sheave. Side view in the case of 90 degrees, FIG. 8 shows the rotation axis of the processed part Angle of 0 degrees formed between the tangent of the machining point on the traction sheave and, 30 degrees, is a table summarizing differences in the processing behavior of the three conditions of 90 degrees.

In FIG. 1, 1 is an elevator car, 2 is a main rope for suspending the car 1, and one end is fixed to the car 1. 3 is a counterweight, and the other end of the main rope 2 is fixed. Reference numeral 4 denotes a driving sheave for a hoist installed in a machine room or the like, on which a main rope 2 is wound. Reference numeral 5 denotes a fixed body for fixing the driving sheave 4 and the driving machine of the hoisting machine, and is provided in a machine room or the like. Denoted at 6 is a deflecting wheel for adjusting the suspension position of the car 1 and the counterweight 3, on which the main rope 2 is wound. This deflecting wheel 6 is also fixed to the fixed body 5.
A plurality of rope grooves 4 a are formed in the drive sheave 4 for winding the main rope 2. Further, the rope guide 6 is also provided with a rope groove for guiding the rope, like the driving sheave 4. 7 is a rope groove processing apparatus according to the present invention. A rope groove processing device 7a attached in a state where the rope groove 4a of the drive sheave 4 is reprocessed is attached to the upper surface of the fixed body 6 of the elevator. The rope groove processing device 7b attached to the state of regenerating the rope groove of the deflector 6 is attached to the lower surface of the elevator fixed body 6.

  FIG. 2 is an enlarged detailed view showing a state in which the rope groove processing device 7 is attached to the drive sheave 4. In FIG. 2, reference numeral 8 denotes an attachment portion that forms the base of the rope groove processing device 7, and detachably fixes the rope groove processing device 7 to the fixed body 5 of the elevator. Reference numeral 9 denotes a processing portion of the rope groove processing device 7 provided at the tip of the attachment portion 8, a rotary grinding wheel 10 for grinding and removing the rope groove 4 a, a motor 11 for rotating the grinding wheel 10, The motor mounting plate 12 holds the motor 11. 13 is provided between the attachment portion 8 and the processing portion 9 of the rope groove processing device 7, and the processing portion 9 is driven in the direction of the rotation axis of the driving sheave 4 (x direction = direction perpendicular to the paper surface of FIG. 2) and driving. It is a movable support part that is supported so as to be movable in the radial direction of the sheave 4 (z direction = up and down direction in FIG. 2).

  FIG. 3 is a side view for explaining the operation of the movable support portion 13. FIG. 4 is a rear view thereof. Each figure shows a state in which the driving sheave 4 extends in the rotation axis direction (x direction) and the radial direction (z direction). The movable support portion 13 includes an x-direction movable device 14 and a z-direction movable device 15. A fixed end of the x-direction movable device 14 is fixed to the mounting portion 8, and a z-direction movable device 15 is fixed to the movable end. Further, a motor mounting plate 12 is fixed to the movable end of the z-direction movable device 15. The rope groove to be processed is selected and the processing position is finely adjusted by the expansion and contraction of the x-direction movable device 14.

  Rope groove grinding removal processing is performed mainly by feeding in the z direction at a constant feed rate (feed amount). That is, the z-direction movable device 15 is extended at a constant speed. First, the driving sheave 4 rotates and the rope groove 4a moves while the main rope 2 is wound by the rotation of the driving machine of the hoisting machine. Next, the grinding wheel 10 is also rotated by the motor 11. Next, the z-direction movable device 15 is extended at a constant speed, and the rope groove 4a is corrected. That is, the rope groove 4a is deepened and the depth is adjusted to the depth of the deepest groove. The processing conditions at this time are abrasive speed (= grinding wheel radius * rotation speed, also referred to as peripheral speed), and 1000 mm / min or more is necessary. The feed speed (extension speed) of the z-direction movable device 15 is set in units of 1 micron so that the feed amount per rotation of the drive sheave 4 is 5 microns or less, and is set according to the rotation speed of the drive sheave 4 To do. If the feed amount is larger than this, the abrasive grains are usually dropped and the tool life is shortened, or the grinding wheel 10 bites into the rope groove 4a and bites and scratches, resulting in unstable machining. It is desirable to adopt the most efficient machining conditions one step before the unstable machining in grinding.

Next, the mounting arrangement of the processing portion 9 of the rope groove processing device 7 will be described with reference to FIG. In particular, the rotation axis 16 of the grinding wheel 10 of the processing unit 9 is fixed by the motor mounting plate 12 so that the angle formed by the tangent line 17 at the processing point 4y on the drive sheave 4 is approximately 30 degrees.
The effect when the angle formed between the rotation axis 16 of the grinding wheel 10 of the processing portion 9 and the tangent line 17 at the processing point 4y on the drive sheave 4 is 30 degrees will be described with reference to FIGS. explain. FIG. 5 is a side view showing a positional relationship during processing of the rope groove 4a and the grinding wheel 10, and FIG. 6 is a rear view thereof. In the correction processing of the rope groove 4a, it is necessary to grind the vicinity of the bottom 4h of the rope groove 4a to deepen the bottom 4h. At this time, the machining powder flies along the tangent line 18 from the machining end point 4z in FIG. In other words, the direction in which the processing dust flies is limited to one direction by the mounting arrangement of the processing portion 9 of the rope groove processing device 7 according to the present invention.

Next, returning to the side view of FIG. 5, other effects will be described. At the initial stage of processing of the grinding wheel 10, the point g contacts the surface abrasive grains at the upper side 4 j of the rope groove 4 a. However, the contact point moves to point f at the bottom 5h after rotating 90 degrees. When it further rotates 180 degrees, it comes into contact with the opposite side of point g (point g ′). Accordingly, the abrasive grains on the surface of the grinding wheel 10 that contribute to the processing move from the point g to the point f during the rotation, and finally become the point g ′. Therefore, the abrasive grains that contribute to the processing are all abrasive grains in the shaded area in FIG. This area corresponds to ¼ of the surface area when the rotation axis 16 of the grinding wheel 10 is 30 degrees with respect to the tangent line 17. That is, the number of abrasive grains contributing to processing reaches 1/4 of all abrasive grains. However, when the angle is 0 degree, the contact position is always point g, and the number of working abrasive grains is extremely small. Therefore, only a part of the abrasive grains is concentrated and consumed, and the tool life is remarkably shortened.
Further, since half of the rotation (rotation) does not contribute to the processing, the surface has a natural air cooling action, and the processing powder adhering between the abrasive grains can be discharged by the centrifugal force. Further, the abrasive speed that is a problem in grinding usually requires 1000 mm / min or more as described above. It is obvious that the abrasive speed at point g is the fastest, but the decrease in the abrasive speed at point f is only 13%. Therefore, this abrasive speed can be easily satisfied by increasing the number of revolutions of the motor 12.

  Here, the grinding efficiency and tool life, which are the two major items that must be taken into account in grinding, are summarized. In the arrangement configuration according to the present invention, more surface abrasive grains can act and a sufficient abrasive speed can be ensured, so that the grinding efficiency is sufficiently good. In addition, since the cooling effect is sufficient, the tool life is extended. Therefore, according to the first embodiment of the present invention, when the rope groove 4a, which has been worn by long-term operation of the elevator, is corrected by the rope groove processing device 7, the rotational axis 16 of the grinding wheel 10 of the processing portion 9 is used. Is arranged so that the angle formed with the tangent line 17 at the machining point 4y on the drive sheave 4 is approximately 30 degrees, so that both grinding efficiency and tool life can be achieved, and a work period including tool change, And the cost required for work including tool costs can be greatly reduced.

  Here, as a supplementary explanation, a case where the angle formed by the rotation axis 16 of the processing unit 9 and the tangent line 17 at the processing point 4y on the driving sheave 4 is 90 degrees will be considered with reference to FIG. As is apparent from FIG. 7, in the case of 90 degrees, the peripheral speed is considerably insufficient at the bottom 4h that should be most processed, so that the processing efficiency is extremely poor. Further, the machining powder cannot be discharged out of the rope groove 4a, causing clogging, increasing the temperature, damaging the binding material and the like, and significantly shortening the tool life.

FIG. 8 is a table summarizing differences in machining phenomena under three conditions where the angle between the rotation axis of the machining portion and the tangent at the machining point on the drive sheave is 0 degrees, 30 degrees, and 90 degrees. Note that the optimum angle value generally depends on the processing conditions. For example, the distribution of the abrasive grain size, the hardness of the abrasive grain, the holding power of the abrasive binder, the cost of the grinding wheel, the machinability of the groove, the ambient temperature, and the like. However, it has been found that there is an optimum value around 30 degrees.
The abrasive material and particle size of the grinding wheel 10, the material of the binder, the material of the alloy, etc. are determined by the tool cost, the finished shape, the required surface roughness, etc., and are not limited by this invention. Absent. Moreover, it may be configured to have a plurality of grinding wheels 10 of the processing unit 9 so that the correction processing can be performed more efficiently.

Embodiment 2.
9 is a side view showing an elevator rope grooving apparatus according to Embodiment 2 of the present invention, FIG. 10 is a front view showing the rope grooving apparatus according to Embodiment 2 of the present invention, and FIG. 11 is an embodiment of the present invention. The rear view which shows the rope groove processing apparatus in Embodiment 2, FIG. 12 is a flowchart which shows the procedure which controls a feed amount with the position measurement value of the rope groove processing apparatus of the elevator in Embodiment 2 of this invention, FIG. FIG. 14 is a flowchart showing a procedure for controlling the feed amount based on the load measurement value. In the figure, the same or corresponding parts as those in the first embodiment are denoted by the same reference numerals and description thereof is omitted.

In the second embodiment, the processing efficiency of the rope grooving device according to the first embodiment is further improved, and the dust collecting port 19, the position measuring device 20, the temperature measuring device 21, the load measuring device 22 of the dust collector. And the feed amount of the z-direction movable unit 15 can be controlled by the arithmetic unit 23.
The function of each additional device will be described.

First, the dust collection port 19 of the dust collector will be described. In this invention, it arrange | positions so that the angle which the rotational axis 16 of the grinding wheel 10 of the process part 9 and the tangent line 17 in the processing point 4y on the drive sheave 4 may form may become about 30 degree | times, and it shows in FIG. Thus, the discharge direction of all the processing powder was limited to the tangential direction 18 of the processing end point 4g. The speed of the processing powder at the time of discharging is the same as the abrasive speed and is approximately 1000 mm / min. Therefore, although the processed powder receives the resistance of air, the processed powder flies almost linearly. Therefore, the dust collection port 19 of the dust collector need only be on the extension line of the tangent 18 and may be at a position that does not interfere with the processing. Therefore, as shown in FIG. 9, the dust collection port 19 of the dust collector is disposed so as to be positioned on the extended line of the tangent 18 of the grindstone processing end point 4 g and is attached to the motor mounting plate 12. At this time, a shape having an opening having an area in consideration of a slight spread of the scattering of the processed powder is taken, and the processed powder captured by the dust collecting port 19 is surrounded by a dust collector (the dust collecting port and the piping to the dust collector are not shown). If it is sucked together with the air, almost 100% of the processed powder can be collected.
During normal processing, the grinding wheel 10 is stopped from rotating at an appropriate time to remove clogging due to processing powder, and the clogging is removed with a wire brush or the like. However, with this efficient dust collection, the present invention does not require clogging to be removed during processing.
Furthermore, after normal processing, sufficient cleaning work is required to prevent adverse effects such as an increase in rope slip due to adhesion of processed powder to the main rope 2. However, due to such efficient dust collection, the present invention requires little cleaning work after processing.
In the above description, the dust collection port 19 is attached to the motor attachment plate 12, but it is not necessary to limit the attachment relationship as long as it is an extension of the tangent line 18, and is attached to the movable part of the x-direction movable device 14. It may be anywhere as long as it does not interfere with processing.
In other words, in the present invention, it is possible to reliably collect the processing powder generated by the removal processing in the dust state in the air, thereby adversely affecting the processing by the processing powder, such as clogging of the grindstone surface and the movable support portion. Intrusion into the sliding surface can also be prevented. Moreover, adhesion of the processed powder to the main rope 2 and adhesion to the rope groove 4a can be prevented. As a result, the efficiency of the cleaning operation during and after the processing is greatly improved, and the correction processing operation can be performed in a short time.

Next, the position measuring device 20 will be described. Now, the rolling elements made of balls and rollers inside the bearing (bearing) that rotatably holds the driving sheave 4 and the deflector 6 of the hoist are not all the same diameter. There is a difference of several microns even in the initial stage of use, and when wear progresses in long-term use, it becomes several tens of microns. Thus, there is some eccentricity during rotation. This eccentricity reaches about 0.1 mm at the maximum when groove correction processing is required. As described above, the feed amount of the grinding wheel 10 needs to be controlled in units of 0.001 mm (1 micron). However, if the eccentricity of the bearing is 100 times that, the control cannot be performed only with a normal feed amount, and the feed amount may increase rapidly and may cause a bite wound. If this eccentricity has periodicity, measures can be taken to some extent, but the possibility that the positional relationship of the rolling elements that are the cause is periodically reproduced is extremely low. Therefore, even if paying attention to the periodicity of eccentricity, it is impossible to avoid this bite.
Therefore, the position measuring device 20 is attached to the motor mounting plate 12 and fitted to the reference surface of the driving sheave 4 and the deflecting wheel 6 (the portion that is not subject to wear by the main rope 2, the upper side 4j of FIG. 5 and the driving sheave 4). If the position in the radial direction (z direction) between the rope groove processing device 7 and the surface of the brake that is coupled to the rope groove processing device 7 is measured, and the z-direction movable unit 15 is controlled so as to ensure the feed amount as set. Good.

FIG. 12 is a flowchart showing a procedure for controlling the feed amount based on the position measurement value. Actually, the calculation device 23 performs calculation / judgment / execution. First, the position measurement value z0 in the z direction at the start of machining is stored. Next, the position measurement value z1 of the new reference plane in the z direction is measured (step S1), and the new position measurement value z1 is compared with the position measurement value z0 at the start of machining to determine the position change amount Δz ( = Z1-z0) is obtained (step S2). Then, this position change amount Δz is added to the reference feed set value zb to obtain an effective feed amount z (zb + Δz) (step S3), the z-direction movable unit 15 is driven, and z-direction feed is performed (step S4). ). Hereinafter, if this operation is repeated, a stable feed amount can be secured.
That is, in the present invention, since the feed amount is constantly monitored and controlled by the position measuring device 20, the feed amount can be stabilized and the required groove depth can be obtained reliably. Therefore, the efficient process which can fully exhibit the performance of the rope groove processing apparatus 7 is realizable. Furthermore, it is possible to prevent adverse effects (such as bite scratches and a decrease in machining efficiency) on machining due to unauthorized rotation movement of the bearings of the driving sheave 4 and the deflecting wheel 6.
Now, during normal machining, since the elevator drive is activated, there is considerable electromagnetic noise in the vicinity of the position measuring device 20. Therefore, noise is added to the analog signal of the position measuring device 20, and it is difficult to obtain an accurate position measurement value. As a countermeasure, a position measuring device having a digital scale such as an optical scale or a magnetic scale is particularly effective. A signal from a position measuring device having a digital scale represents a change in position of 1 micron with or without the signal. Therefore, no matter how much noise is present, the presence or absence of a signal can be easily determined, and the position can be reliably measured.
In the above description, the position measuring device 20 is attached to the motor attachment plate 12. However, as long as the position of the reference plane can be measured, the position measurement device 20 is not limited to this attachment relationship, and is attached to the movable portion of the x-direction movable device 14. Alternatively, it may be attached outside the device (for example, when measuring the position of the brake surface). It may be attached at any position as long as it does not interfere with processing.

Next, the temperature measuring device 21 will be described. Before that, we will consider the adverse effects of grinding heat. The working cutting edge (edge part) of the grinding abrasive grains during processing rises to 300-900 ° C. during an angle of 180 degrees grinding the rope groove. Since the area is small, it is naturally air-cooled between 180 degrees that are not ground. As the processing efficiency increases, the amount of heat generation increases, and natural air cooling becomes insufficient, the temperature of the abrasive grains rises, and finally the temperature of the grinding wheel 10 itself (including the grinding wheel shaft) rises. Actual grinding is performed under the condition of the processing efficiency just before this step, that is, under the condition that the temperature becomes a substantially constant value. Also, the abrasive cutting edge gradually wears. If the feed amount per unit time (feed speed) is constant, the load increases with the progress of wear, and as a result, the heat generation amount increases and the temperature of the grinding wheel rises. Further, when the processing powder accumulates on the surface of the grindstone and becomes clogged, if the feed amount is constant, the grinding load increases, and as a result, the amount of heat generation increases, and the temperature of the grinding wheel 10 rises. Thus, the possibility that the temperature of the grinding wheel 10 is raised from the stable processing state is quite high.
When the temperature of the grinding wheel 10 rises, the grinding wheel 10 is thermally expanded, and a substantial cutting amount (feed amount) increases. For example, if the temperature rises by 10 ° C., it corresponds to an increase in the cutting amount of about 1 micron with a grinding wheel having a diameter of 10 mm. Since this increase extends not only in the feed direction (z direction) but also around the entire circumference, the machining load increases significantly, resulting in a further increase in temperature due to this increase in load. Eventually, the binder of the abrasive grains on the surface of the grindstone deteriorates at a high temperature, and the abrasive grains fall off. That is, the tool life is remarkably shortened. Further, a biting wound or the like may occur, or the apparatus (mainly the motor 12) may be damaged due to overload. Therefore, in order not to raise the temperature rapidly, processing with a small load or early replacement of the grinding wheel 10 is performed, and the efficiency of the processing operation is reduced.
Therefore, as a countermeasure, if the temperature of the grinding wheel 10 is measured by the temperature measuring device 21 attached to the motor mounting plate 12, and the feed amount is controlled by the z-direction movable unit 15 so that the set value is within the temperature range. Good.

FIG. 13 is a flowchart showing a procedure for controlling the feed amount based on the temperature measurement value, and is actually processed inside the arithmetic unit 23. First, a “lower limit set temperature Td” and an “upper limit set temperature Tu” for preventing a rapid rise in temperature are determined by preliminary experiments or the like so that sufficient processing efficiency can be obtained. Next, temperature measurement is performed to obtain a temperature measurement value T1 (step S11). The measured temperature value T1 and the lower limit set temperature Td are compared (step S12). If the measured temperature value T1 is lower than the lower limit set temperature Td, the feed amount in the z direction is kept at the normal reference feed setting zb (step S13). ), Z-direction feed is performed (step S14). When the temperature measurement value T1 is between the lower limit set temperature Td and the upper limit set temperature Tu, the feed amount is set to zero (steps S15 and S16), z-direction feed is performed (step S14), and natural air cooling is performed. If the temperature measurement value T1 exceeds the upper limit set temperature Tu, it is determined that the thermal expansion is proceeding rapidly, and the grinding wheel 10 is moved backward. In practice, the feed amount z is set to the set reverse feed amount (negative feed amount) zn in the arithmetic unit 23 (steps S15 and S17), and a command is issued to the z-direction movable device 15 (S14). Hereinafter, if this operation is repeated, machining at a stable temperature can be ensured.
Therefore, the efficient process which can fully exhibit the performance of the rope groove processing apparatus 7 is realizable. Furthermore, the occurrence of biting wounds and the like can be prevented.
In other words, by preventing the temperature of the grinding wheel 10 (including the wheel shaft) from rising, the tool life of the wheel is stabilized, the frequency of tool change can be suppressed, and the work time can be reduced by greatly reducing the tool change cost and the tool change time. Enables shortening. In addition, adverse effects on processing due to thermal expansion (biting scratches and overload abnormal stop) can be prevented. As a result, correction processing can be performed more efficiently.
In the above description, the temperature measuring device 21 is mounted on the motor mounting plate 12. However, as long as the temperature of the grinding wheel 10 can be measured, it is not necessary to limit to such a mounting relationship, and the temperature measuring device 21 is mounted on the movable portion of the z-direction movable device 14. Alternatively, it may be attached outside the apparatus. Any position is acceptable as long as it does not interfere with processing.

Next, the load measuring device 22 will be described. Before that, we will consider the improvement and stabilization of machining efficiency. In the grinding process, it is the most efficient process to give the grinding wheel 10 a driving force in the rotational direction, which is a grinding force, as long as the apparatus does not fail.
Now, in actual groove correction processing, the wear state of each groove is not the same. For example, if there is a groove (case 1) with a small amount of wear only on a part of the entire circumference and a considerable amount of wear on the remaining part, only a part of the entire circumference has a large amount of wear, and the remaining part has a little wear. There is also no groove (case 2). In addition, there is a groove (case 3) that is worn with a wide groove width and a groove (case 4) that is worn with a narrow groove width. Here, if a plan for machining any groove with a constant feed amount is made, the feed amount of a groove with a high machining load (in the case of Case 2 or Case 4) must be employed in order to avoid failure of the motor 11 or the like. I do not get. In this case, the performance of the processing apparatus cannot be sufficiently exerted in the processing of a groove having a low processing load (in the case of Case 1 or Case 3).
Therefore, the load measuring device 22 attached to the motor mounting plate 12 measures the load of the grinding wheel motor 11 and the feed amount is controlled by the z-direction movable device 15 so that the measured load is within the set value range. do it.

FIG. 14 is a flowchart showing a procedure for controlling the feed amount based on the load measurement value, and is actually processed inside the arithmetic unit 23. First, the “lower limit setting load Ld” for obtaining sufficient machining efficiency and the “upper limit setting load Lu” for preventing the failure of the apparatus are determined by data such as preliminary experiments and specifications of the motor 11. Next, load measurement is performed to obtain a load measurement value L1 (step S21). The load measurement value L1 and the lower limit set load Ld are compared (step S22). When the load measurement value L1 is lower than the lower limit set load Ld, the feed amount in the z direction is, for example, twice the normal reference feed setting zb. (Step S23), z-direction feeding is performed (step S24). When the load measurement value L1 is between the lower limit set load Ld and the upper limit set load Lu, the feed amount remains the reference feed amount zb (steps S25 and S26), and z-direction feed is performed (step S24). If the load measurement value L1 exceeds the upper limit set load Lu, the grinding wheel 10 is moved backward in order to prevent the failure of the apparatus. Actually, in the arithmetic unit 23, the feed amount z is set as the set reverse feed amount (negative feed amount) zn (steps S25 and S27), and a command is issued to the z-direction movable unit 15 (S24). Hereinafter, if this operation is repeated, the most efficient and stable machining can be secured.
In other words, by maximizing the capacity of the driving device (such as the motor 11) of the grinding wheel 10, the machining efficiency can be improved and stabilized, and the actual machining time can be shortened. In addition, it is possible to cope with a sudden machining abnormality due to clogging of a grindstone or biting of a foreign substance, and to prevent a device failure due to a bite or overload. As a result, it is possible to perform an efficient correction process that can sufficiently exhibit the performance of the groove processing apparatus.
In the above description, the load measuring device 22 is mounted on the motor mounting plate 12. However, if the load can be measured, the load measuring device 22 is not limited to such a mounting relationship. The motor drive device may be attached. Any place is acceptable as long as it does not interfere with processing. The load measuring method may be calculated from the power supplied to the motor (voltage, current, gas flow rate, etc.), the ratio of the actual rotational speed to the command rotational speed, etc., and is not particularly limited.

It is a schematic block diagram of the elevator apparatus which shows the state which attached the rope groove processing apparatus of the elevator in Embodiment 1 of this invention. It is a side view which shows the rope groove processing apparatus of the elevator in Embodiment 1 of this invention. It is a side view for demonstrating the movable state of the movable support part of the rope groove processing apparatus in Embodiment 1 of this invention. It is a rear view for demonstrating the movable state of the movable support part of the rope groove processing apparatus in Embodiment 1 of this invention. It is a side view in case the angle which the rotation axis of a process part and the tangent in the process point on a drive sheave form is 30 degree | times. It is a front view in case the angle which the rotation axis of a process part and the tangent in the process point on a drive sheave form is 30 degree | times. It is a side view in case the angle which the rotation axis of a process part and the tangent in the process point on a drive sheave form is 90 degree | times. It is the table | surface which put together the difference of the machining phenomenon in three conditions whose angles which the rotation axis of a process part and the tangent in the process point on a drive sheave form are 0 degree | times, 30 degree | times, and 90 degree | times. It is a side view which shows the rope groove processing apparatus of the elevator in Embodiment 2 of this invention. It is a front view which shows the rope groove processing apparatus in Embodiment 2 of this invention. It is a rear view which shows the rope groove processing apparatus in Embodiment 2 of this invention. It is a flowchart which shows the procedure which controls a feed amount with the position measured value of the rope groove processing apparatus of the elevator in Embodiment 2 of this invention. It is a flowchart which shows the procedure which controls feed amount by a temperature measurement value. It is a flowchart which shows the procedure which controls feed amount with a load measurement value. It is a schematic block diagram which shows the arrangement configuration of a general elevator. It is a schematic block diagram which shows the structure of the drive sheave of an elevator hoisting machine. It is a schematic block diagram which shows the case where the rope groove | channel of the drive sheave which wear progressed is reprocessed with the conventional rope groove processing apparatus. It is a schematic block diagram which shows a process completion state.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator car 2 Main rope 3 Balance weight 4 Drive sheave 4a Rope groove 4y Processing point of drive sheave 4h Rope groove bottom 4z Processing end point 4j Rope groove upper side 5 Fixed body 6 Baffle 7 Rope groove processing device DESCRIPTION OF SYMBOLS 8 Attachment part of rope grooving apparatus 9 Processing part of rope grooving apparatus 10 Grinding wheel 11 Motor 12 Motor mounting plate 13 Movable support part 14 X-direction movable device 15 Z-direction movable device 16 Rotation line of grinding wheel 17 Driving sheave Tangent line of machining point 18 Tangent line from machining end point 4z 19 Dust collector port of dust collector 20 Position measuring device 21 Temperature measuring device 22 Load measuring device 23 Computing device

Claims (14)

A mounting portion detachably provided on the fixed body of the elevator;
Among the rope grooves formed on the drive sheave, a processing portion that is arranged so as to face the rope groove portion around which the main rope that suspends the elevator car is not wound,
A movable support portion provided in the attachment portion, and supporting the processing portion movably in a rotational axis direction and a radial direction of the drive sheave;
The processing unit has a rotary grinding wheel for removing the rope groove, and the rotation axis of the grinding wheel is an angle of approximately 30 degrees with a tangent from a processing point on the drive sheave. An elevator rope groove processing device characterized by being fixed so as to form A mounting portion detachably provided on the fixed body of the elevator;
Among the rope grooves formed in the sled wheel, a processing portion arranged so as to face the rope groove portion around which the main rope for suspending the elevator car is not wound,
A movable support portion provided on the attachment portion and configured to support the processing portion so as to be movable in a rotation axis direction and a radial direction of the vehicle;
The processing portion has a rotary grinding wheel for removing the rope groove, and the rotation axis of the grinding wheel has an angle of approximately 30 degrees with a tangent line from the processing point on the deflector wheel. An elevator rope grooving apparatus characterized by being fixed to be formed.   It is equipped with a dust collector that collects the processing powder generated when the rope groove formed on the driving sheave or deflector is removed by the processing section, and the dust collection port of this dust collector is tangent to the grinding wheel processing end point. 3. The elevator rope groove processing apparatus according to claim 1, wherein the apparatus is disposed on an extension line of the elevator rope groove.   The elevator according to any one of claims 1 to 3, further comprising a position measuring device that measures a relative position in a radial direction between a reference surface formed on the driving sheave or the deflecting wheel and the mounting portion. Rope groove processing equipment.   5. The elevator rope groove processing apparatus according to claim 4, wherein the position measuring device has a digital scale.   The elevator rope groove processing device according to any one of claims 1 to 5, further comprising a temperature measuring device that measures the temperature of the grinding wheel of the processing portion.   The elevator rope groove processing apparatus according to any one of claims 1 to 6, further comprising a load measuring device that measures a grinding load of the processing portion.   6. The elevator rope groove processing apparatus according to claim 4, further comprising an arithmetic unit that sets a feed amount of the processing unit based on a measurement value of the position measuring device.   7. The elevator rope groove processing apparatus according to claim 6, further comprising an arithmetic unit that sets a feed amount of the processing unit based on a measurement value of the temperature measuring device.   The elevator rope groove processing apparatus according to claim 7, further comprising an arithmetic unit that sets a feed amount of the processing unit based on a measurement value of the load measuring apparatus.   The elevator rope groove processing apparatus according to any one of claims 1 to 10, comprising a plurality of grinding wheels. Of the rope groove formed on the drive sheave and the attachment part that is detachably provided on the fixed body of the elevator, it is arranged to face the rope groove part where the main rope that suspends the elevator car is not wound And a movable support portion that is provided in the attachment portion and supports the processing portion so as to be movable in the rotational axis direction and the radial direction of the driving sheave. The processing portion removes the rope groove. And an elevator rope groove fixed so that an axis of rotation of the grinding wheel forms an angle of approximately 30 degrees with a tangent to a processing point on the drive sheave. In processing
A rope groove machining method for an elevator, wherein the rope groove is removed by rotating the driving sheave while the main rope is wound and rotating the grinding wheel. Of the rope groove formed on the deflector and the attachment part provided detachably on the fixed body of the elevator, the main rope for suspending the elevator car is arranged so as to face the rope groove portion around which the main rope is not wound. A rotating portion that is provided in the attachment portion and supports the processing portion so as to be movable in a rotation axis direction and a radial direction of the vehicle, and the processing portion rotates to remove the rope groove; In an elevator rope grooving that has a grinding wheel of a mold and is fixed so that the rotation axis of the grinding wheel forms an angle of approximately 30 degrees with a tangent from a machining point on the deflector wheel,
A rope groove processing method for an elevator, wherein the rope groove is removed by rotating the driving sheave and the deflecting wheel while the main rope is wound, and rotating the grinding wheel.   It is equipped with a dust collector that collects the processing powder generated when the rope groove formed on the driving sheave or deflector is removed by the processing section, and the dust collection port of this dust collector is tangent to the grinding wheel processing end point. 14. The generated dust is collected by the dust collector by operating the dust collector simultaneously with the rotation of the driving sheave and the grinding wheel. The elevator rope groove processing method described.

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