JP2017094469A - Sheave groove correction device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheave groove correction device capable of correcting and machining a plurality of sheave grooves of a driving sheave on a machine, without using axial moving means and a control device.SOLUTION: A sheave groove correction device is equipped with a plurality of cutting tools 22, a guide tool 24, a positioning unit 30, and a moving unit 40. The plurality of cutting tools 22 has a cutting machining surface 22a abutting on a sheave groove 7a to cut and machine the sheave groove 7a. The guide tool 24 has a guide surface 25a abutting on the shave groove 7a to regulates the movement inward in a diametrical direction of the driving sheave 7. The positioning unit 30 positions the cutting tools 22 and the guide tool 24 so as to make the cutting machining surface 22a and the guide surface 25a respectively oppose to the plurality of sheave grooves 7a and positioned at the same diametrical direction positions of the driving sheave 7. The moving unit 40 moves a part of the positioning unit 30 in a diametrical direction of the driving sheave 7, and synchronizes the cutting machining surface 22a and the guide surface 25a to move in the diametrical direction.SELECTED DRAWING: Figure 5

Description

  The present invention relates to a sheave groove correcting device that corrects a sheave groove of a drive sheave on a machine.

In a device (for example, an elevator device) that lifts and lowers a lift to be lifted by a plurality of ropes and moves a plurality of ropes synchronously with a drive sheave having a plurality of sheave grooves, Will be greatly inclined at the bottom and top of the hoistway.
Therefore, when the uneven wear of the groove of the drive sheave exceeds the adjustable range, it is necessary to replace the drive sheave.

  However, replacement of the drive sheave requires removal of all the lifts and ropes, and it takes a long time for replacement, resulting in inconvenience to the user and large costs.

  Therefore, for example, Patent Literatures 1 and 2 disclose a sheave groove correcting device that corrects a sheave groove of a drive sheave on a machine without removing a rope.

Patent Document 1 “Rope groove undercut correction processing device and rope groove undercut correction processing method using this correction processing device” describes a hail tool, a radial drive unit, an axial drive unit, and a control device. With.
The radial drive unit moves the hail tool in the radial direction of the grooved wheel. The axial drive unit is mounted on the fixed member and moves the radial drive unit in the axial direction of the grooved wheel. The control device controls the movement amount of the radial driving unit and the movement amount of the axial driving unit.

  The “elevator device provided with the groove processing device” of Patent Document 2 includes a car, a grooved wheel, a turning tool, a first movable portion, a second movable portion, a position measuring device, and a control device.

  The basket is suspended by a rope. The grooved wheel has a reference surface on which a rope is wound and which serves as a radial position reference. The first movable part moves the turning tool in the radial direction of the grooved wheel. The second movable part moves the turning tool in the axial direction of the grooved wheel. The position measuring device measures the position of the reference surface of the grooved wheel.

  The control device stores a reference feed set value serving as a reference for the feed amount of the turning tool and a position measured value measured by the position measuring device, and the first movable unit and the second mover are based on the reference feed set value and the position measured value. Control the position of the movable part. The control device also determines the radial direction of the turning tool from the difference between the reference surface position measurement value measured at the start of turning of the grooved wheel and the reference surface position measurement value measured during turning of the grooved wheel and the reference feed setting value. A feed amount is calculated, and the first movable portion is moved in the radial direction of the grooved wheel based on the calculated feed amount.

JP 2012-679 A JP 2013-112471 A

The devices of Patent Documents 1 and 2 have an axial direction moving means (an axial direction drive unit or a second movable unit) that moves the machining tool in the axial direction of the grooved wheel. However, a special control device is required to accurately position the machining tool at the groove position of the grooved wheel by this axial movement means.
Since this control device controls, for example, the movement amount of the radial drive unit and the movement amount of the axial drive unit, the control becomes complicated.

  The present invention has been developed to solve the above-described problems. That is, an object of the present invention is to provide a sheave groove correcting device that can correct a plurality of sheave grooves of a drive sheave on the machine without using an axial movement means and a control device.

According to the present invention, there is a sheave groove correcting device that corrects a plurality of sheave grooves of a drive sheave on the machine,
A plurality of cutting tools having a cutting surface for cutting the sheave groove in contact with the sheave groove;
A guide tool having a guide surface that abuts the sheave groove and restricts the movement of the drive sheave inward in the radial direction;
A positioning unit that positions the cutting tool and the guide tool such that the cutting surface and the guide surface respectively face the plurality of sheave grooves and are positioned at the same radial position of the drive sheave;
There is provided a sheave groove correcting device comprising: a moving unit that moves a part of the positioning unit in a radial direction of the drive sheave and moves in a radial direction by synchronizing the cutting surface and the guide surface.

  The cutting surface and the guide surface have an outer surface shape that matches a cross-sectional shape of the sheave groove or a string member driven by the sheave groove.

  The guide tool is attached to the positioning unit so that the guide surface abuts on the sheave groove that is most unevenly worn.

The cutting tool is a cutting bit having the cutting surface,
The guide tool has a contact rotation part that freely rotates around the axial center of the drive sheave at the tip thereof, and the contact rotation part has the guide surface on an outer surface thereof.

  The positioning unit has a positioning body having a plurality of positioning grooves for positioning the cutting tool and the guide tool in the axial direction and the radial direction, and the cutting tool and the guide tool are detachably fixed to the positioning groove, respectively. A tool fixture.

The cutting tool is a rotary tool that can rotate around the radial axis,
The cutting surface is a rotating surface centered on the axis,
The guide tool has a contact rotating portion that freely rotates around the axis at the tip thereof, and the contact rotating portion has the guide surface that is a rotating surface centered on the axis on the outer surface thereof. .

  The positioning unit includes a rotational drive device that rotationally drives the cutting tool and the guide tool in synchronization with the axial center in the radial direction.

The rotary drive device can fix the cutting tool or the guide tool to an inner end portion, extends radially outward of the drive sheave, and is supported so as to be rotatable around the axial center of the radial direction. A plurality of rotational drive shafts;
A plurality of gears fixed to the plurality of rotational drive shafts, meshing with each other, and rotatable about the axis;
A drive motor that rotationally drives the plurality of gears.

The positioning unit has a pair of parallel guide surfaces provided at both ends in the axial direction of the drive sheave and extending in the radial direction, and a positioning body having a support lower surface extending in the axial direction and the radial direction;
A pair of parallel guides for guiding the pair of parallel guide surfaces in the radial direction; and a support body having a support upper surface fixed to a fixing portion of the drive sheave and guiding the support lower surface in the radial direction. .

The positioning body has a vertical taper back surface having a constant gradient with respect to the axial direction,
The moving unit includes a taper plate having a vertical taper front surface that can slide in contact with the back surface of the vertical taper, and a taper plate moving device that moves the taper plate in the axial direction.

According to the present invention, the positioning unit positions the cutting tool and the guide tool so that the cutting surface and the guide surface respectively face the plurality of sheave grooves and are positioned at the same radial position of the drive sheave.
The moving unit moves a part of the positioning unit in the radial direction of the drive sheave and moves in the radial direction by synchronizing the cutting surface and the guide surface.

  Accordingly, the cutting surface of the cutting tool and the guide surface of the guide tool are always positioned at the alignment positions facing the plurality of sheave grooves by the positioning unit and the moving unit without using the axial movement means.

In addition, just by moving a part of the positioning unit in the radial direction of the drive sheave by the moving unit, the cutting surface and the guide surface are synchronized in the radial direction until the guide surface of the guide tool comes into contact with the most worn sheave groove. Moving.
During this movement, a plurality of sheave grooves other than the sheave grooves for guiding the guide tool can be corrected in synchronism to the same position as the most worn sheave grooves by the cutting surfaces of the plurality of cutting tools.

  Therefore, a plurality of sheave grooves of the drive sheave can be corrected on the machine without using the axial direction moving means and the control device.

It is the schematic which shows the elevator type parking apparatus which can apply the sheave groove correction apparatus of this invention. It is a top view of a drive sheave. It is a side view of a drive sheave. It is a schematic diagram which shows the example of the sheave groove | channel of a drive sheave. It is a top view which shows 1st Embodiment of the sheave groove correction apparatus of this invention. FIG. 6 is a side view of FIG. 5. It is AA sectional drawing (A) and BB sectional drawing (B) of FIG. It is a top view which shows 2nd Embodiment of the sheave groove correction apparatus of this invention. It is a side view of FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the common part in each figure, and the overlapping description is abbreviate | omitted.

FIG. 1 is a schematic view showing an elevator parking apparatus 100 to which the sheave groove correcting apparatus of the present invention can be applied.
The elevator parking apparatus 100 includes a lift 3 on which a vehicle is placed and a lifting mechanism 1 that lifts and lowers the lift 3.

  The lifting mechanism 1 includes a sheave driving device 5, a driving sheave 7, a driven pulley 6, a string member 2 (for example, a wire rope), and a counterweight 8. The sheave drive device 5 includes a drive motor 5a and a speed reducer 5b that decelerates the rotation of the drive motor 5a. The drive motor 5a rotates the drive sheave 7 via the speed reducer 5b. An intermediate portion of the string member 2 is stretched over the drive sheave 7, one end of the string member 2 is fixed to the lift 3, and the other end of the string member 2 is fixed to the counterweight 8. .

  Accordingly, when the drive sheave 7 rotates, the string member 2 hung on the drive sheave 7 is fed out toward the lift 3 or pulled up from the lift 3 side toward the counterweight 8 depending on the rotation direction. As a result, the lift 3 moves up and down. In the example of FIG. 1, four such string members 2 are provided, and these four string members 2 extend from the four corners of the lift 3, respectively, and follower pulley 6, drive sheave 7, and follower pulley. 6 in this order and extend to the counterweight 8.

FIG. 2 is a plan view of the drive sheave 7, and FIG. 3 is a side view of the drive sheave 7.
In this example, the sheave groove 7a of the drive sheave 7 is different from that shown in FIG. 1 and is provided with 8 grooves (4 grooves + 4 grooves). That is, in this example, the eight string members 2 are extended from the four corners of the lift 3 of FIG. 1 two by two, and are hung on the driven pulley 6, the drive sheave 7, and the driven pulley 6 in this order until the counterweight 8 is reached. It extends.
In addition, this invention is not limited to this structure, The drive sheave 7 which has the four sheave grooves 7a similarly to FIG. 1 may be sufficient.

2 and 3, the pitch diameter of the drive sheave 7 is about 600 to 800 mm.
Moreover, the diameter of the string member 2 (for example, wire rope) is about 12 mm.

  FIG. 4 is a schematic diagram showing an example of the sheave groove 7 a of the drive sheave 7. In this figure, (A) shows a round-bottomed sheave groove 7a, and (B) shows a U-shaped sheave groove 7a.

In FIG. 4A, the cross-sectional shape of the sheave groove 7a is as follows: a round bottom 7b having a radius smaller than the radius of the string member 2, and a pair of tapered surfaces 7c spreading from the bottom 7b toward the outer periphery. It is a U-shape.
In FIG. 4B, the cross-sectional shape of the sheave groove 7a includes a U-shaped bottom portion 7b having a width smaller than the diameter of the string member 2, and a pair of tapered surfaces 7c that spread from the bottom portion 7b toward the outer periphery. It is a U-shape.
4A and 4B, the pair of tapered surfaces 7c are formed on a flat surface or an arcuate surface that swells inward.

In this example, the pitch of the sheave grooves 7a in the axial direction of the drive sheave 7 is about 20 mm.
The width of the sheave groove 7a on the outer peripheral surface of the drive sheave 7 is set larger than the diameter of the string member 2 (wire rope). The width of the sheave groove 7a on the outer peripheral surface is, for example, about 18 mm.
In addition, this invention is not limited to the example mentioned above, The cross-sectional shape or cross-sectional dimension of the sheave groove | channel 7a may differ.

  2 and 3, the bearing unit 9 is fixed to the horizontal frame 11 of the elevator parking device 100 by a coupling member 9 a (bolts and nuts). The bearing unit 9 supports the rotation of the drive sheave 7, and the rotary joint 10 connects the sheave drive device 5 and the drive sheave 7. The guide plate 12 suppresses the detachment of the string member 2 from the sheave groove 7a, and the limit switch 13 detects the detachment of the string member 2 from the sheave groove 7a.

  With the above-described configuration, in a state where the sheave groove 7 a is not worn, the plurality of string members 2 come into contact with the pair of tapered surfaces 7 c at the pitch diameter of the drive sheave 7, and the plurality of strings are generated by the rotation of the drive sheave 7. The member 2 can be driven synchronously.

Further, the uneven wear of the sheave groove 7 a is caused by the difference in the wear amount of the plurality of sheave grooves 7 a that are in contact with the string member 2. That is, in FIG. 1, since the loads lifted by the four string members 2 are usually different, the amount of wear of the sheave groove 7a contacting the string member 2 having a large load is large, and the sheave contacting the string member 2 having a small load is large. The amount of wear of the groove 7a is reduced.
As a result, the taper surface 7c in contact with the string member 2 is worn, and the string member 2 comes to be located inside the pitch diameter. In this case, as shown in FIGS. 4A and 4B, a concave groove 7d (shown by a broken line) corresponding to the cross-sectional shape of the string member 2 is formed on the tapered surface 7c inside the pitch diameter of the sheave groove 7a. The

  FIG. 5 is a plan view showing the first embodiment of the sheave groove correcting device 20 of the present invention.

  In FIG. 5, the sheave groove correcting device 20 of the present invention includes a plurality of cutting tools 22, a guide tool 24, a positioning unit 30, and a moving unit 40.

The cutting tool 22 has a cutting surface 22a that contacts the sheave groove 7a to cut the sheave groove 7a.
The guide tool 24 has a guide surface 25a that abuts the sheave groove 7a and restricts the movement of the drive sheave 7 inward in the radial direction.
The positioning unit 30 positions the cutting tool 22 and the guide tool 24 so that the cutting surface 22a and the guide surface 25a face the plurality of sheave grooves 7a and are positioned at the same radial position of the drive sheave 7. .

In FIG. 5, the positioning unit 30 has a positioning body 32. The positioning body 32 is a flat plate in this example, and has a pair of parallel guide surfaces 32a and a support lower surface 32b (see FIG. 6).
The pair of parallel guide surfaces 32a are provided at both axial ends of the drive sheave 7 and extend in the radial direction (in this example, the horizontal direction). The support lower surface 32 b extends in the axial direction and the radial direction (horizontal direction) of the drive sheave 7.

  Hereinafter, “axial direction” and “radial direction” mean the axial direction and radial direction of the drive sheave 7 unless otherwise specified. In this example, the “radial direction” is the horizontal direction, and the support lower surface 32b is a horizontal plane.

  In FIG. 5, the positioning unit 30 further includes a pair of parallel guides 34 and a support body 36.

The pair of parallel guides 34 guides the pair of parallel guide surfaces 32a in the radial direction (horizontal direction).
In this example, the support body 36 is fixed to the fixing portion of the drive sheave 7 (the horizontal frame 11 in this example) by the coupling member 9a of the bearing unit 9. Further, the support body 36 has a support upper surface 36a for guiding the support lower surface 32b (see FIG. 6) in the radial direction (horizontal direction).
The support main body 36 is preferably fixed accurately by a positioning pin (not shown) so that the support upper surface 36a is positioned at a predetermined position (height and direction).

  With the above-described configuration, the positioning body 32 is maintained along the pair of parallel guides 34 while maintaining the posture by the engagement (sliding) between the pair of parallel guide surfaces 32a and the pair of parallel guides 34. The positioning body 32 can be moved in the radial direction (horizontal direction) of the drive sheave 7.

  The moving unit 40 moves a part of the positioning unit 30 (in this example, the positioning body 32) in the radial direction (horizontal direction) of the drive sheave 7, and moves in the radial direction by synchronizing the cutting surface 22a and the guide surface 25a. Has the function of

In FIG. 5, the positioning body 32 has a vertical taper back surface 32d having a constant gradient with respect to the axial direction.
The moving unit 40 includes a tapered plate 42 and a tapered plate moving device 44.
The taper plate 42 has a vertical taper front surface 42a that can slide in contact with the vertical taper back surface 32d, and a vertical back surface 42b that extends in the axial direction. The vertical taper front surface 42a and the vertical back surface 42b are vertical planes.

  The taper plate moving device 44 moves the taper plate 42 in the axial direction of the drive sheave 7.

The taper plate moving device 44 includes a fixed support plate 45, a male screw rod 46, and a fixed female screw plate 47.
The fixed support plate 45 has a vertical plane 45 a that is fixed to the support body 36 and slides with the vertical back surface 42 b of the taper plate 42. One end of the male threaded rod 46 is in contact with the axial end surface (lower end surface in FIG. 5) of the tapered plate 42 and extends in the axial direction. The fixed female screw plate 47 has a female screw portion 47 a that is fixed to the support main body 36 and screwed into the male screw rod 46.

  In this example, a handle 48 is attached to the end of the male threaded rod 46 (lower end in FIG. 5), and the male threaded rod 46 is rotated about its axis so that the taper plate 42 is moved to the drive sheave 7. It can move in the axial direction.

  With the above-described configuration, the positioning plate 32 is moved in the radial direction of the drive sheave 7 by sliding the vertical taper front surface 42a and the vertical taper back surface 32d by moving the taper plate 42 in the axial direction of the drive sheave 7 by the handle 48. (Horizontal direction).

  The moving unit 40 of the present invention is not limited to the above-described configuration as long as the cutting surface 22a and the guide surface 25a can be synchronized and moved in the radial direction. Good.

  6 is a side view of FIG. 5 similar to FIG. Moreover, FIG. 7 is AA sectional drawing (A) and BB sectional drawing (B) of FIG.

7A, the guide tool 24 has a contact rotating portion 25 that freely rotates around the axial center of the drive sheave 7 at the tip thereof. The contact rotating part 25 has a guide surface 25a that abuts on the sheave groove 7a on the outer surface thereof.
The contact rotating part 25 is preferably made of a material having high wear resistance and low sliding resistance (for example, Teflon (registered trademark), nylon (registered trademark), or other plastics).
Further, the guide surface 25a of the guide tool 24 is attached to the positioning unit 30 so as to come into contact with the sheave groove 7a that has been most unevenly worn.

  In FIG. 7B, the plurality of cutting tools 22 are machining tools that simultaneously cut the plurality of sheave grooves 7a. In this example, the cutting tool 22 is a cutting tool, and has a cutting surface 22a that contacts the sheave groove 7a and cuts the sheave groove 7a.

Further, the cutting surface 22a and the guide surface 25a have the same outer surface shape that matches the cross-sectional shape of the string member 2 (for example, a wire rope) driven by the sheave groove 7a in this example. That is, in this example, the cutting surface 22 a and the guide surface 25 a are semicircular corresponding to the cross section of the string member 2.
In addition, the outer surface shape of the cutting surface 22a and the guide surface 25a may be a shape (for example, a U shape in FIG. 4) that matches the cross-sectional shape of the sheave groove 7a.

5 and 6, the cutting surface 22a and the guide surface 25a are positioned on the positioning body 32 of the positioning unit 30 in the axial direction and the radial direction of the drive sheave 7 at intervals of the sheave grooves 7a.
That is, in FIGS. 5 and 6, the positioning unit 30 positions the cutting surface 22 a of the cutting tool 22 and the guide surface 25 a of the guide tool 24 in the axial direction and the radial direction of the drive sheave 7 at intervals of the sheave grooves 7 a. To do.

5 to 7, the positioning body 32 has a plurality of positioning grooves 32c.
The plurality of positioning grooves 32c are fitted with the cutting tool 22 or the guide tool 24 to position the cutting tool 22 and the guide tool 24 in the axial direction and the radial direction at intervals of the sheave groove 7a.

The positioning unit 30 further includes a tool fixture 38.
The tool fixture 38 is a horizontal member whose both ends are fixed to the support body 36 across the plurality of positioning grooves 32c. The tool fixture 38 has a fixing bolt 39 that is vertically screwed to a position that aligns with the plurality of positioning grooves 32c, and the cutting tool 22 and the guide tool 24 are detachably fixed to the plurality of positioning grooves 32c by the fixing bolt 39. To do.

By the positioning unit 30 described above, the cutting tool 22 and the guide tool are arranged such that the cutting surface 22a and the guide surface 25a face the plurality of sheave grooves 7a and are located at the same radial position of the drive sheave 7. 24 is positioned.
Further, a part of the positioning unit 30 (positioning body 32 in this example) is moved in the radial direction of the drive sheave 7 by the moving unit 40, and the cutting surface 22a and the guide surface 25a are moved in the radial direction in synchronization.

  Accordingly, the drive sheave 7 is rotationally driven in the forward direction (rightward rotation in FIG. 6), and the positioning main body 32 is moved radially inward by the moving unit 40, so that the plurality of cutting surfaces 22a are moved to the respective sheave grooves 7a. The plurality of sheave grooves 7a can be cut simultaneously.

Further, the guide surface 25a of the guide tool 24 is attached to the positioning unit 30 so as to contact the sheave groove 7a that has been most unevenly worn, and does not cut the sheave groove 7a. Therefore, when the guide surface 25a comes into contact with the most unevenly worn sheave groove 7a, a part of the positioning unit 30 (the positioning body 32 in this example) cannot be moved in the radial direction any more.
Therefore, the correction process can be terminated by detecting this state by an increase in the operating load of the moving unit 40 or the like.

  FIG. 8 is a plan view showing a second embodiment of the sheave groove correcting device 20 of the present invention. FIG. 9 is a side view of FIG. 8 similar to FIG.

In FIG. 8, a motor 49 with a speed reducer is attached to the end of the male threaded rod 46 (lower end in FIG. 8) so that the male threaded rod 46 can be driven to rotate about its axis.
The structure of the other movement unit 40 is the same as that of 1st Embodiment.

  With the above-described configuration, the male screw rod 46 is rotated by the motor 49 with a speed reducer to move the taper plate 42 in the axial direction, and the positioning main body 32 is moved in the radial direction by sliding between the vertical taper front surface 42a and the vertical taper back surface 32d. It can be moved in the (horizontal direction).

In FIG. 8, the plurality of cutting tools 22 are rotary tools that can rotate around a radial axis. This rotary tool has a cutting surface 22a which is a rotation surface centered on an axis.
The cutting surface 22a is, for example, a grinding surface or a grindstone surface.

In FIG. 8, the guide tool 24 has a contact rotating portion 25 that freely rotates around the radial axis at the tip thereof. The contact rotating part 25 has a guide surface 25a which is a rotating surface centering on an axis centered on the sheave groove 7a on the outer surface thereof.
The contact rotating part 25 is preferably made of a material having high wear resistance and low sliding resistance (for example, Teflon, nylon, or other plastic).

In FIG. 8, the positioning unit 30 positions the cutting tool 22 and the guide tool 24 in the axial direction and the radial direction at intervals of the sheave grooves 7a.
That is, in FIG. 8, the positioning unit 30 positions the cutting surface 22a of the cutting tool 22 and the guide surface 25a of the guide tool 24 in the axial direction and the radial direction of the drive sheave 7 at intervals of the sheave grooves 7a.

In this example, the shapes of the cutting tool 22 and the guide tool 24 are the same, and the shapes of the cutting surface 22a and the guide surface 25a are the same. Therefore, the cutting tool 22 and the guide tool 24 can be positioned in a free arrangement at intervals of the sheave grooves 7a in the axial direction and the radial direction of the drive sheave 7.
At this time, the guide surface 25a of the guide tool 24 is attached to the positioning unit 30 so as to come into contact with the sheave groove 7a that has been most unevenly worn.

  8 and 9, the positioning unit 30 includes a rotation drive device 50 that drives the cutting tool 22 and the guide tool 24 to rotate in synchronization with each other about a radial axis.

  In FIG. 9, the rotation drive device 50 includes a plurality of rotation drive shafts 52, a plurality of gears 54, and a drive motor 56.

The plurality of rotary drive shafts 52 can fix the cutting tool 22 or the guide tool 24 to the inner end portion, extend radially outward, and are supported so as to be rotatable about a radial axis.
The plurality of gears 54 are fixed to the plurality of rotation drive shafts 52, meshed with each other, and supported so as to be rotatable around a radial axis.
The drive motor 56 drives the plurality of gears 54 to rotate.

  With the configuration of the rotary drive device 50 described above, the cutting tool 22 and the guide tool 24 can be driven to rotate about the axial center in the radial direction.

  Further, the drive sheave 7 is rotationally driven in the forward direction or the reverse direction, and the positioning body 32 is moved inward in the radial direction by the moving unit 40, whereby the plurality of cutting surfaces 22a are in contact with the respective sheave grooves 7a, A plurality of sheave grooves 7a can be cut simultaneously.

Further, the guide surface 25a of the guide tool 24 is attached to the positioning unit 30 so as to contact the sheave groove 7a that has been most unevenly worn, and does not cut the sheave groove 7a. Therefore, when the guide surface 25a comes into contact with the most unevenly worn sheave groove 7a, a part of the positioning unit 30 (positioning body 32) cannot be moved further in the radial direction.
Therefore, by detecting this state based on an increase in the movement load of the positioning unit 30 or the like, the correction process can be terminated.

According to the present invention described above, the positioning unit 30 is arranged so that the cutting surface 22a and the guide surface 25a face the plurality of sheave grooves 7a and are positioned at the same radial position of the drive sheave 7 respectively. And the guide tool 24 are positioned.
Further, the moving unit 40 moves a part of the positioning unit 30 (positioning body 32) in the radial direction of the drive sheave 7, and moves in the radial direction by synchronizing the cutting surface 22a and the guide surface 25a.

  Accordingly, the cutting surface 22a of the cutting tool 22 and the guide surface 25a of the guide tool 24 are always positioned at the alignment positions facing the plurality of sheave grooves 7a by the positioning unit 30 and the moving unit 40 without using the axial movement means. Positioned.

Further, the cutting surface 22a and the guide surface 25a are synchronized until the guide surface 25a comes into contact with the most worn sheave groove 7a only by moving a part of the positioning unit 30 (positioning body 32) in the radial direction by the moving unit 40. And move in the radial direction.
During this movement, the plurality of sheave grooves 7a other than the sheave grooves that guide the guide tool 24 are corrected by the cutting surfaces 22a of the plurality of cutting tools 22 in synchronization with the most worn sheave grooves 7a. be able to.

  Therefore, the plurality of sheave grooves 7a of the drive sheave 7 can be corrected on the machine without using the axial movement means and the control device.

  Note that the present invention is not limited to the above-described embodiment, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

1 Lifting mechanism, 2 string member (wire rope), 3 lift, 5 sheave drive device,
5a drive motor, 5b reducer, 6 driven pulley, 7 drive sheave, 7a sheave groove,
7b bottom, 7c taper surface, 7d groove, 8 counterweight,
9 Bearing unit, 9a Connecting member (bolt and nut), 10 rotary joint,
11 horizontal frame, 12 guide plate, 13 limit switch,
20 Sheave groove correcting device, 22 cutting tool, 22a cutting surface, 24 guide tool,
25 contact rotation part, 25a guide surface, 30 positioning unit, 32 positioning body,
32a Parallel guide surface, 32b Support lower surface, 32c Positioning groove,
32d vertical taper back surface, 34 parallel guide, 36 support body, 36a support top surface,
38 tool fixing tool, 39 fixing bolt, 40 moving unit, 42 taper plate,
42a vertical taper front surface, 42b vertical back surface, 44 taper plate moving device,
45 fixed support plate, 45a vertical plane, 46 male screw rod, 47 fixed female screw plate,
47a female thread part, 48 handle, 49 motor with reduction gear,
50 rotational drive device, 52 rotational drive shaft, 54 gears,
56 Drive motor, 100 Elevator parking system

Claims (10)

A sheave groove correcting device that corrects a plurality of sheave grooves of a drive sheave on the machine,
A plurality of cutting tools having a cutting surface for cutting the sheave groove in contact with the sheave groove;
A guide tool having a guide surface that abuts the sheave groove and restricts the movement of the drive sheave inward in the radial direction;
A positioning unit that positions the cutting tool and the guide tool such that the cutting surface and the guide surface respectively face the plurality of sheave grooves and are positioned at the same radial position of the drive sheave;
A sheave groove correcting device comprising: a moving unit that moves a part of the positioning unit in the radial direction of the drive sheave and moves in a radial direction by synchronizing the cutting surface and the guide surface.   The sheave groove correcting device according to claim 1, wherein the cutting surface and the guide surface have an outer surface shape that matches a cross-sectional shape of the sheave groove or a string member driven by the sheave groove.   The sheave groove correcting device according to claim 1, wherein the guide tool is attached to the positioning unit so that the guide surface is in contact with the sheave groove that is most unevenly worn. The cutting tool is a cutting bit having the cutting surface,
2. The guide tool according to claim 1, wherein the guide tool has a contact rotating portion that freely rotates around an axial center of the drive sheave at a tip thereof, and the contact rotating portion has the guide surface on an outer surface thereof. The described sheave groove correcting device.   The positioning unit has a positioning body having a plurality of positioning grooves for positioning the cutting tool and the guide tool in the axial direction and the radial direction, and the cutting tool and the guide tool are detachably fixed to the positioning groove, respectively. The sheave groove correcting device according to claim 4, further comprising a tool fixing tool. The cutting tool is a rotary tool that can rotate around the radial axis,
The cutting surface is a rotating surface centered on the axis,
The guide tool has a contact rotating portion that freely rotates around the axis at the tip thereof, and the contact rotating portion has the guide surface that is a rotating surface centered on the axis on the outer surface thereof. The sheave groove correcting device according to claim 1.   The sheave groove correcting device according to claim 6, wherein the positioning unit includes a rotational drive device that rotationally drives the cutting tool and the guide tool in synchronization with the axial center in the radial direction. The rotary drive device can fix the cutting tool or the guide tool to an inner end portion, extends radially outward of the drive sheave, and is supported so as to be rotatable around the axial center of the radial direction. A plurality of rotational drive shafts;
A plurality of gears fixed to the plurality of rotational drive shafts, meshing with each other, and rotatable about the axis;
The sheave groove correcting device according to claim 7, further comprising: a drive motor that rotationally drives the plurality of gears. The positioning unit has a pair of parallel guide surfaces provided at both ends in the axial direction of the drive sheave and extending in the radial direction, and a positioning body having a support lower surface extending in the axial direction and the radial direction;
A pair of parallel guides for guiding the pair of parallel guide surfaces in the radial direction; and a support body having a support upper surface fixed to a fixing portion of the drive sheave and guiding the support lower surface in the radial direction. The sheave groove correcting device according to claim 1. The positioning body has a vertical taper back surface having a constant gradient with respect to the axial direction,
The said moving unit has a taper board which has the vertical taper front surface which can slide in contact with the said vertical taper back surface, and the taper board moving apparatus which moves the said taper plate to the said axial direction. Sieve groove correction device.

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