JP5234686B1 - Adjustment method per brake surface - Google Patents

Abstract

A brake surface adjusting method capable of improving a brake torque of a disc brake that generates a braking force by an urging force of a spring is provided.
According to the embodiment, an adjustment method per brake surface includes a procedure for attaching a polishing disc 30 to a rotary shaft 5, a procedure for rotating the polishing disc 30 to polish a pressure-bonding surface 21, and a brake disc 25. Attaching to the rotary shaft 5. The abrasive disc 30 is provided with an abrasive 31 on the surface facing the crimping surface 21 of the armature 20. The procedure for attaching the polishing disc 30 to the rotating shaft 5 is performed with the brake disc 25 removed from the rotating shaft 5. The procedure of rotating the polishing disk 30 to polish the pressure-bonding surface 21 is performed while the armature 20 is pressure-bonded to the polishing disk 30 by the urging force of the spring 15. The procedure for attaching the brake disk 25 to the rotating shaft 5 is performed by removing the polishing disk 30 from the rotating shaft 5 after polishing the crimping surface 21.
[Selection] Figure 6

Description

  Embodiments described herein relate generally to an adjustment method per brake surface.

  The elevator hoisting machine is disposed at the upper part of the hoistway, a sheave around which a rope connected to a car moving in the hoistway is wound, a motor that generates power for rotating the sheave, have. When raising and lowering the car, the sheave is rotated by the power generated by the motor, thereby moving the position of the rope wound around the sheave and raising and lowering the car. In addition, in such a hoisting machine, the sheave that is rotating is decelerated during braking when the car is raised or lowered, or the sheave is stopped when the car is held at an arbitrary position in the hoistway. A brake device that can be maintained at

  For example, in an elevator brake described in Patent Document 1, a sheave around which a rope for getting on and off a car is wound is rotated by a driving force generated by a driving device, and a shaft that transmits the driving force to the sheave is braked on a shaft. Disc is fixed. Lining is provided on both sides of the disk. When braking, the lining is pressed against the disk by a biasing force of a spring, and when releasing the braking, the lining is separated from the disk by a magnetic attraction force. Thereby, a braking force can be applied to the sheave fixed to the same shaft as the disk to which the disk is fixed.

JP 2003-146564 A

  However, if the lining is attached to an armature that operates by the magnet's attractive force, the armature is pressed against the disc by the spring's biasing force during braking, and the lining is pressed against the disc, the biasing force is locally applied to the armature. Will be. As a result, the armature may bend, and due to this bend, the surface contact with the disk may be deteriorated during braking, and the brake torque may be reduced.

  The present invention has been made in view of the above, and it is an object of the present invention to provide an adjustment method per brake surface that can improve the brake torque of a disc brake that generates a braking force by a biasing force of a spring. .

  The adjustment method per brake surface according to the embodiment includes a procedure of attaching the polishing disc to the rotating shaft, a procedure of rotating the polishing disc to polish the pressure-bonding surface, and a procedure of attaching the brake disc to the rotating shaft. The abrasive disc is provided with a polishing material on a surface facing the pressure-bonding surface of the braking member that generates a frictional force with the brake disc by being pressed against the brake disc by the biasing force of the spring when the braking force is generated. ing. The procedure for attaching the polishing disc to the rotating shaft is performed with the brake disc removed from the rotating shaft of the brake device. The procedure of rotating the polishing disk to polish the pressure-bonding surface is performed by rotating the rotating shaft while pressing the braking member against the polishing disk by the biasing force of the spring. The procedure for attaching the brake disk to the rotating shaft is performed by removing the polishing disk from the rotating shaft after polishing the crimping surface.

FIG. 1 is a schematic view of a brake device that uses an adjustment method per brake surface according to an embodiment. FIG. 2 is an AA arrow view of FIG. FIG. 3 is an explanatory diagram when the braking force is generated by the brake device. 4 is a view taken in the direction of arrows BB in FIG. FIG. 5 is an explanatory view showing a state in which the polishing disk is attached to the rotating shaft. FIG. 6 is a CC arrow view of FIG.

  Hereinafter, an embodiment of an adjustment method per brake surface according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

Embodiment
FIG. 1 is a schematic view of a brake device that uses an adjustment method per brake surface according to an embodiment. FIG. 2 is an AA arrow view of FIG. The brake device 10 shown in the figure is a brake device 10 for the hoist 1 that raises and lowers an elevator car, and includes a brake caliper 12 that is a stop-side member and a brake disc 25 that is a rotation-side member. And have. The brake device 10 is configured as a so-called disc brake that uses the brake disc 25 as a member on the rotation side in this way.

  Of the constituent members of the brake device 10, the brake disk 25 is formed in a disk shape and is attached to the rotary shaft 5 that is the drive shaft of the hoist 1. Specifically, the outer peripheral surface of the rotating shaft 5 has a so-called spline shape, and the brake disc 25 has an insertion hole 27 formed in a shape that fits the spline shape of the rotating shaft 5 near the center axis of the disc. Is formed. The brake disc 25 is attached to the rotary shaft 5 so as not to rotate relative to the rotary shaft 5 in the circumferential direction and to move in the axial direction of the rotary shaft 5 by passing the rotary shaft 5 through the insertion hole 27. ing. That is, the brake disc 25 is attached to the rotary shaft 5 so as to be rotatable integrally with the rotary shaft 5 by being attached to the rotary shaft 5 by spline coupling. As described above, the brake disc 25 attached to the rotating shaft 5 has one surface in the axial direction facing the hoisting machine 1.

  Further, the brake disk 25 is provided with a friction material 26 in the vicinity of the outer periphery of both surfaces of the disk. The friction material 26 provided on both surfaces of the brake disk 25 is provided from the position of the outer periphery of each surface to the center of the disk with a predetermined width over the entire periphery.

  The brake caliper 12 is disposed on the surface of the brake disc 25 opposite to the surface facing the hoisting machine 1. In other words, the brake disc 25 is connected to the brake caliper 12 and the hoisting machine 1. Between the two. The brake caliper 12 is disposed at two locations on the upper side of the rotary shaft 5 and on the lower side of the rotary shaft 5 in the normal usage mode of the hoisting machine 1, and the two brake calipers 12 are Both are formed in a substantially rectangular pair shape, and are configured in the same manner. The brake caliper 12 holds an armature 20 that is a braking member that is pressed against the brake disc 25 when a braking force is generated, and has a coil 13 and a spring 15 that apply a force to move the armature 20. doing.

  Among them, the armature 20 is formed in a plate shape in which the shape seen in the axial direction of the rotary shaft 5 is a rectangular shape similar to the shape of the brake caliper 12, and is arranged on the brake disc 25 side of the brake caliper 12. It is installed. Therefore, the armature 20 faces the brake disc 25, and the surface of the armature 20 on the side facing the brake disc 25 comes into contact with the brake disc 25 when the braking force is generated in the brake device 10, and the brake A crimping surface 21 for crimping the disc 25 is provided. In the armature 20 configured in this way, at least the surface on the brake caliper 12 side is formed of a material exhibiting ferromagnetism such as iron.

  The coil 13 is configured such that the polarity when the magnetic force is generated is oriented along the axial direction of the rotating shaft 5. That is, the coil 13 is oriented such that both poles when the magnetic force is generated are located at both ends in the axial direction of the rotating shaft 5. In addition, the coil 13 configured as described above is provided in the brake caliper 12 so that the end on the armature 20 side is positioned in the vicinity of the outer surface of the brake caliper 12.

  The spring 15 is provided by a compression spring, and is disposed on the surface of the brake caliper 12 on the side where the armature 20 is located. A plurality of the springs 15 are arranged in such a direction that the central axis of the whole spring 15 substantially coincides with the axial direction of the rotary shaft 5. The plurality of springs 15 are disposed in the vicinity of each of the four corners of the rectangle that is the shape of the brake caliper 12 when the brake caliper 12 is viewed in the axial direction of the rotary shaft 5. As described above, the arranged spring 15 applies an urging force in a direction in which the armature 20 is separated from the brake caliper 12 to the armature 20 at each position.

  Further, the brake caliper 12 is provided with a plurality of guides 16 for performing a guide when the armature 20 is moved. The guide 16 is disposed on the surface of the brake caliper 12 on the side where the armature 20 is located. The guide 16 has a round bar shape and extends in a direction parallel to the rotary shaft 5 and extends in the direction in which the armature 20 is located. ing. Four guides 16 are provided in each brake caliper 12, and the four guides 16 are near the four corners when the brake caliper 12 is viewed in the axial direction of the rotary shaft 5. In this position, the spring caliper 12 is disposed closer to the end than the spring 15.

  The armature 20 has a hole (not shown) into which the guide 16 enters at a position corresponding to the guide 16, and the armature 20 has the guide 16 extended by the guide 16 entering the hole. It is possible to move in a direction parallel to the rotation axis 5.

  The operation of the brake device 10 configured as described above will be described. When the brake device 10 does not generate a braking force to raise and lower the elevator car, an electromagnetic force is generated by the coil 13 and the armature 20 is Attract to the direction of the coil 13. That is, the coil 13 generates an attractive force that overcomes the biasing force applied by the spring 15 to the armature 20 by the electromagnetic force, and pulls the armature 20 toward the coil 13 by this attractive force. As a result, the armature 20 moves away from the brake disc 25. Thus, the armature 20 is attracted to the brake caliper 12 by the electromagnetic force generated by the coil 13 and comes into contact with the brake caliper 12.

  Since the brake disc 25 is arranged so as to be movable in the axial direction of the rotary shaft 5, when the armature 20 moves in the direction of the brake caliper 12 and moves away from the brake disc 25, the brake disc 25 25 becomes movable between the armature 20 and the hoist 1.

  As a result, the brake disc 25 is located between the armature 20 and the hoisting machine 1 and does not make much contact with any of them, so that a large frictional force is not generated. The rotation resistance caused by the frictional force is not generated. For this reason, the rotational shaft 5 splined to the brake disk 25 does not generate much rotational resistance and does not generate braking force. Therefore, by driving the hoist 1, It can be freely rotated and the elevator car can be raised and lowered.

  On the other hand, when the hoisting machine 1 being driven is braked to raise or lower the car, or when the hoisting machine 1 is stopped, the braking device 10 generates a braking force. FIG. 3 is an explanatory diagram when the braking force is generated by the brake device. When the braking force is generated by the brake device 10, the armature 20 is pressed against the brake disc 25 by the biasing force of the spring 15 without generating the electromagnetic force by the coil 13.

  In other words, the urging force in the direction away from the brake caliper 12 is applied to the armature 20 by the spring 15, that is, the urging force in the direction approaching the brake disc 25 is applied. Therefore, when no electromagnetic force is generated by the coil 13, the armature 20 is pressed in the direction of the brake disk 25 by the urging force of the spring 15, and the crimping surface 21 contacts the brake disk 25 and is pressed against the brake disk 25. .

  When the armature 20 is pressed against the brake disk 25, the brake disk 25 that can move in the axial direction of the rotary shaft 5 is moved in the direction of this pressing force, that is, the direction of the hoisting machine 1 by the pressing force from the armature 20. Moving. As a result, the brake disc 25 comes into contact with the hoisting machine side pressure-bonding surface 2 that is a surface facing the brake disc 25 in the hoisting machine 1. That is, the brake disc 25 is sandwiched between the armature 20 and the hoisting machine 1 by the urging force applied by the spring 15 to the armature 20, and between the armature 20 and the brake disc 25, and between the hoisting machine 1 and the brake disc 25. In between, a crimping force is generated.

  Further, since the friction material 26 is provided in the vicinity of the outer periphery of both surfaces of the brake disk 25, the brake disk 25 and the armature 20 are caused by the pressing force generated between the brake disk 25 and the friction material 26. A large frictional force is generated between the crimping surface 21 and the hoisting machine side crimping surface 2. This frictional force becomes rotational resistance when the brake disk 25 rotates, and rotational resistance when the rotating shaft 5 rotates. That is, the brake torque is generated by the frictional force. As a result, when the braking device 10 generates a braking force when the rotating shaft 5 rotates, braking is performed by the brake torque, and the braking device 10 generates the braking force while the rotating shaft 5 is stopped. If this happens, the stop state is maintained by the brake torque.

  4 is a view taken in the direction of arrows BB in FIG. Here, the state when the armature 20 moves in the direction of the brake disc 25 by the biasing force of the spring 15 will be described. Since the spring 15 is disposed in the vicinity of each of the four corners when the brake caliper 12 is viewed in the axial direction of the rotary shaft 5, the urging force to the armature 20 is also applied to each of the four corners in the armature 20. ing.

  For this reason, when the armature 20 moves in the direction of the urging force of the spring 15 when the braking force is generated, the other part follows and moves with the movement of the part to which the urging force is applied. The entire armature 20 moves. Therefore, the movement amount of the portion where the urging force is applied in the armature 20 is larger than the movement amount of the portion where the urging force is not applied, and the armature 20 may bend. That is, the armature 20 may bend due to the urging force applied non-uniformly.

  As described above, when the armature 20 is bent, the contact pressure between the pressure contact surface 21 of the armature 20 and the brake disk 25 is not uniform, or the portion of the pressure contact surface 21 that originally contacts the brake disk 25 is not. There may be no contact. In this case, the frictional force between the armature 20 and the brake disk 25 is reduced and the rotational resistance is reduced, so that the brake torque is reduced. Therefore, in the adjustment method per brake surface according to the present embodiment, the contact surface of the armature 20 that contacts the brake disc 25 is adjusted.

  FIG. 5 is an explanatory view showing a state in which the polishing disk is attached to the rotating shaft. FIG. 6 is a CC arrow view of FIG. In the adjustment method per brake surface according to the present embodiment, a polishing disk 30 that is formed in a disk shape that is the same shape as the brake disk 25 and that has an abrasive 31 on its surface is used. That is, the polishing disk 30 is formed with the same diameter and the same thickness as the brake disk 25. The polishing material 31 of the polishing disk 30 is provided on both surfaces of the polishing disk 30 and has a predetermined width in a direction from the outer peripheral position of each surface toward the center of the disk that is the shape of the polishing disk 30. It is provided over the lap. In addition, the abrasive 31 has a higher coefficient of friction and higher strength than the friction material 26. In addition, the polishing disc 30 is formed with an insertion hole 32 formed in a shape that fits the spline shape of the rotary shaft 5 in the vicinity of the central axis of the disc as in the brake disc 25.

  When adjusting the contact surface of the armature 20 that contacts the brake disc 25, the polishing disc 30 is attached to the rotary shaft 5 with the brake disc 25 removed from the rotary shaft 5 of the brake device 10. That is, the polishing disk 30 is attached to the rotating shaft 5 by spline coupling by passing the rotating shaft 5 through the insertion hole 32.

  As described above, when the polishing disk 30 is attached to the rotating shaft 5, the rotating shaft 5 is rotated in a state where no electromagnetic force is generated by the coil 13. That is, the rotating shaft 5 is rotated in a state where the armature 20 is not attracted by the coil 13 and is pressed against the polishing disk 30 by the biasing force of the spring 15.

  Thus, since the abrasive 31 is provided on the surface of the polishing disk 30 facing the armature 20, when the rotary shaft 5 is rotated while the armature 20 is pressed against the polishing disk 30, the abrasive 31 is removed from the armature 20. It moves relatively while contacting the pressure bonding surface 21 of 20. Since the abrasive 31 has a higher coefficient of friction and higher strength than the friction material 26 of the brake disc 25, the abrasive 31 is moved relative to the crimping surface 21 while being in contact with the crimping surface 21. 21 is polished by this abrasive 31. Thereby, the contact part with the abrasive 31 in the crimping surface 21 is made flat.

  Thus, the range where the pressure-bonding surface 21 is polished by the abrasive 31 is the range where the abrasive 31 in the abrasive disc 30 is provided, and this range is where the friction material 26 in the brake disc 25 is provided. The range is the same as the existing range. Therefore, the range to be polished by the abrasive 31 is the same as the range in which the crimping surface 21 of the armature 20 contacts the friction material 26 of the brake disk 25 when the braking force is generated by the brake device 10. Therefore, by polishing the pressure-bonding surface 21 of the armature 20 with the polishing disk 30, regardless of the state of occurrence of the bending of the armature 20 caused by the non-uniform application of the biasing force of the spring 15, The contact portion with the friction material 26 is made flat.

  Thus, after grinding | polishing of the crimping | compression-bonding surface 21, the grinding | polishing disk 30 is removed from the rotating shaft 5, and the brake disk 25 is attached to the rotating shaft 5. Accordingly, even when the armature 20 is bent when the braking force is generated in the brake device 10, the contact portion between the pressure-bonding surface 21 of the armature 20 and the brake disk 25 is evenly contacted and the surface pressure is equal. become. As a result, an appropriate large frictional force can be generated between the crimping surface 21 and the friction material 26 of the brake disc 25, and a large brake torque can be generated. Will be able to generate.

  In the above adjustment method per brake surface, the abrasive disc 30 is attached to the rotary shaft 5 with the brake disc 25 removed, and the abrasive disc 30 is rotated while the armature 20 is being crimped to the abrasive disc 30 so that the crimping surface 21 is formed. Since the polishing is performed, the crimping surface 21 can be made flat regardless of the bending state of the armature 20. Further, after the pressure-bonding surface 21 is polished in this way, the polishing disk 30 is detached from the rotating shaft 5 and the brake disk 25 is attached to the rotating shaft 5, so that when the braking force is generated, the brake disk 25 is brought into contact with the brake disk 25 in a flat state. A frictional force can be generated between the pressure-bonding surface 21 and the brake disk 25. As a result, even when the armature 20 generates a pressing force against the brake disk 25 by the biasing force of the spring 15, a large frictional force is generated between the pressing surface 21 of the armature 20 and the brake disk 25 regardless of the presence or absence of bending. Can be generated. As a result, the brake torque of the disc brake 25 that generates a braking force by the biasing force of the spring 15 can be improved.

  In addition, since the abrasive 31 of the polishing disk 30 has a higher friction coefficient and higher strength than the friction material 26 provided on the brake disk 25, the pressure-bonding surface 21 of the armature 20 is formed by the polishing disk 30. It can polish more reliably. As a result, regardless of whether the armature 20 is bent or not, a large frictional force can be generated between the crimping surface 21 of the armature 20 and the brake disk 25 more reliably, and the brake torque can be improved more reliably. it can.

  Further, since the polishing disk 30 is formed in the same shape as the brake disk 25, when the armature 20 is pressed against the polishing disk 30 by the biasing force of the spring 15 when the pressure-bonding surface 21 is polished, the armature 20 is braked. It can be bent with the same amount of bending as the amount of bending in the case of crimping to 25. As a result, when the crimping surface 21 is polished, the crimping surface 21 can be more reliably polished so as to contact the brake disc 25 evenly. As a result, the brake torque can be improved more reliably.

  Further, since the abrasive disc 30 is provided with the abrasive 31 on both sides, the hoisting machine side crimping surface 2 can be polished by the polishing disc 30 even when the surface finish of the hoisting machine side crimping surface 2 is rough. The hoisting machine side pressure-bonding surface 2 can be made a smooth flat surface. As a result, a large frictional force can be generated between the hoisting machine side crimping surface 2 and the brake disc 25, and the brake torque can be improved more reliably.

[Modification]
In the adjustment method per brake surface described above, the abrasive disc 30 is provided with the abrasive 31 on both sides, but the abrasive 31 may be provided only on one side of the abrasive disc 30. For example, when it is not necessary to polish the hoisting machine side pressure-bonding surface 2, the abrasive 31 may be provided only on one surface of the polishing disk 30 and only the pressure-bonding surface 21 of the armature 20 may be polished. Thereby, since the rotational torque at the time of grinding | polishing by attaching the grinding | polishing disk 30 to the rotating shaft 5 can be made small, the load of the winding machine 1 at the time of grind | polishing the crimping | compression-bonding surface 21 can be made small.

  Although several embodiments of the present invention have been described, these embodiments are presented by way of example and are not intended to limit the scope of the invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Hoisting machine 2 Hoisting machine side crimping surface 5 Rotating shaft 10 Brake device 12 Brake caliper 13 Coil 15 Spring 20 Armature (braking member)
21 Crimp surface 25 Brake disc 26 Friction material 30 Abrasive disc 31 Abrasive material

Claims (2)

A polishing disk in which an abrasive is provided on a surface opposite to a pressure-bonding surface of a braking member that generates a frictional force with the brake disk by pressing the brake disk with a biasing force of a spring when a braking force is generated. Attaching to the rotary shaft in a state where the brake disc is removed from the rotary shaft of the brake device;
A procedure for polishing the pressure-bonding surface by rotating the polishing disk by rotating the rotating shaft while pressing the braking member against the polishing disk by the biasing force of the spring;
After polishing the pressure-bonding surface, removing the polishing disc from the rotating shaft and attaching the brake disc to the rotating shaft;
The adjustment method per brake surface characterized by including.   2. The brake surface according to claim 1, wherein the abrasive has a higher friction coefficient and higher strength than a friction material provided on a surface of the brake disk that faces the pressure-bonding surface. Adjustment method.

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