JP2018144930A - Elevator braking device and elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator braking device that is capable of reducing a collision sound caused by a braking unit, and an elevator.SOLUTION: This elevator is provided with an elevator braking device. The elevator braking device is provided with a resistance unit that applies resistance against a force applied to a braking unit by a driving unit to the braking unit. The resistance unit is provided with first and second magnets arranged so that similar magnetic poles can face each other in order to apply the resistance to the braking unit by a repulsive magnetic force.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an elevator braking device including a braking unit that brakes the rotating body by being in contact with the rotating body, and an elevator including the elevator braking device.

  Conventionally, as an elevator braking device, an elevator braking device including a braking unit that brakes the rotating body by contacting the rotating body is known (for example, Patent Document 1). The braking unit moves between a braking position in contact with the rotating body and a standby position away from the rotating body.

  By the way, when the brake part moves toward the brake position, the brake part hits the rotating body, and when it moves toward the standby position, it hits a support part that supports the brake part. Therefore, a collision sound is generated when the braking unit hits the rotating body or the support unit.

JP 10-129989 A

  Then, a subject is providing the braking device for elevators and an elevator which can make the collision sound resulting from a braking part small.

  The elevator braking device contacts the rotating body in order to brake the rotating body by contacting the rotating body that rotates integrally with a sheave around which a rope connected to the car is wound. A braking unit movable between a braking position and a standby position away from the rotating body, a drive unit for applying a force to the braking unit so that the braking unit moves, and the braking unit positioned at the standby position When the brake unit hits the brake unit, the support unit moves away from the brake unit when the brake unit is positioned at the brake position, and when the brake unit moves from the brake position toward the standby position and hits the support unit, A drag part that provides the braking part with a resistance against a force that the driving part applies to the braking part, and the drag part faces the same magnetic pole so as to impart a drag to the braking part by a repulsive magnetic force. 1st placed in With beauty second magnet, said first and second magnets, wherein the brake unit such that a distance therebetween becomes smaller along with it moves toward the standby position from the braking position, is disposed.

  In such an elevator braking device, a plurality of the drag portions are provided, and the drag portions are moved when the brake portions move from a braking position toward a standby position and hit the support portions. A configuration in which an adjustment unit capable of adjusting the distance between the two magnets may be provided.

  In the elevator braking apparatus, the first magnet is fixed to the braking portion, the second magnet is fixed to the support portion, and the adjusting portion is the first magnet. It may be configured such that at least one of the position of the second magnet with respect to the braking portion and the position of the second magnet with respect to the support portion can be changed.

  Further, the elevator braking device is configured to brake the rotating body by contacting with the rotating body rotating integrally with a sheave around which a rope connected to a car is wound around an outer periphery. A braking part movable between a braking position in contact with the rotating body and a standby position away from the rotating body, a drive part for applying a force to the braking part so that the braking part moves, and the braking part from the standby position A drag part that provides the braking part with a resistance against the force that the driving part applies to the braking part when it moves toward the braking position and hits the rotating body, and the drag part is caused by the repulsive magnetic force. The first and second magnets are arranged so that the same magnetic poles face each other so as to give a drag force to the braking unit, and the first and second magnets move the braking unit from the standby position toward the braking position. With each other As away it is reduced, is arranged.

  In such an elevator braking device, a plurality of the drag units are provided, and the drag units move when the brake unit moves from the standby position toward the brake position and hits the rotating body. A configuration in which an adjustment unit capable of adjusting the distance between the two magnets may be provided.

  In addition, the elevator braking device includes a base portion that reduces a distance from the braking portion when the braking portion moves from the standby position toward the braking position, and the first magnet includes the braking portion. The second magnet is fixed to the base portion, and the adjusting portion is a position of the first magnet with respect to the braking portion, and a position of the second magnet with respect to the base portion, It may be configured such that at least one of them can be changed.

  The elevator includes a sheave on which a rope connected to the car is wound around an outer periphery, a rotating body that rotates integrally with the sheave, and the elevator braking device.

  As described above, the elevator braking device and the elevator have an excellent effect that the collision noise caused by the braking unit can be reduced.

FIG. 1 is a schematic diagram of an elevator according to an embodiment. FIG. 2 is a schematic diagram of the hoisting apparatus according to the embodiment. FIG. 3 is a schematic longitudinal sectional view of the braking device according to the embodiment, and shows a state where the braking unit is located at the standby position. FIG. 4 is a schematic longitudinal sectional view of the braking device according to the embodiment, and shows a state where the braking portion is located at the braking position. FIG. 5 is a schematic longitudinal sectional view of the drag portion according to the embodiment. FIG. 6 is a schematic cross-sectional view of the braking apparatus according to the embodiment, showing a state where the braking unit is located at the standby position. FIG. 7 is a schematic cross-sectional view of the braking apparatus according to the embodiment, showing a state where the braking unit is located at the braking position. FIG. 8 is a schematic longitudinal sectional view for explaining the action and effect of the drag portion according to the embodiment, and is a view showing a state where the braking portion is located at the braking position. FIG. 9 is a schematic longitudinal sectional view for explaining the action and effect of the drag portion according to the embodiment, and is a view showing a state where the braking portion is located at the standby position. FIG. 10 is a schematic longitudinal sectional view of a braking device according to another embodiment. FIG. 11 is a schematic diagram of a hoist according to still another embodiment.

  Hereinafter, an embodiment of an elevator braking device and an elevator will be described with reference to FIGS. In each figure (the same applies to FIGS. 10 and 11), the dimensional ratio of the drawings does not necessarily match the actual dimensional ratio, and the dimensional ratios between the drawings do not necessarily match. Absent.

  As shown in FIG. 1, the elevator 1 according to this embodiment includes a car 1 a for a user to ride, a rope 1 b with one end connected to the car 1 a, and a balance connected to the other end of the rope 1 b. And a weight 1c. The elevator 1 includes a hoisting machine 2 that drives the rope 1b to move the car 1a up and down. The hoisting machine 2 includes a rotatable sheave 2a around which the rope 1b is wound. .

  As shown in FIG. 2, the hoisting machine 2 rotates integrally with the sheave 2a, an electric motor 2b that gives the sheave 2a a rotational drive, machine frames 2c and 2c that rotatably support the sheave 2a, and the sheave 2a. And a braking device 3 for braking the rotating body 2d in order to brake the sheave 2a. The rotating body 2d is formed integrally with the sheave 2a. Specifically, the rotating body 2d is connected to the sheave 2a. The hoisting machine 2 includes a shaft portion 2e that transmits the drive of the electric motor 2b to the sheave 2a.

  As shown in FIGS. 3 and 4, the braking device 3 includes a caliper 4 arranged so as to surround a part of the outer peripheral portion of the rotating body 2 d. The braking device 3 includes first and second braking parts 5 and 6 that brake the rotating body 2d by contacting the rotating body 2d. The braking device 3 is a so-called disc brake, and brakes the rotating body 2d by contacting the first and second braking parts 5 and 6 with the rotating body 2d interposed therebetween.

  The first braking unit 5 is movable with respect to the caliper 4, and the second braking unit 6 is fixed to the caliper 4 by a fixing member 3a. And the braking parts 5 and 6 are provided with the contact surfaces 51 and 61 which contact | connect the side plane of the rotary body 2d. Specifically, the first braking unit 5 includes a planar contact surface 51 that contacts the first side plane of the rotating body 2d (the left side surface in FIGS. 3 and 4), and the second braking unit 6 includes The planar contact surface 61 is provided in contact with the second side plane of the rotating body 2d (the right side surface in FIGS. 3 and 4).

  The caliper 4 includes a caliper main body 41 to which the second brake unit 6 is fixed, and a drive unit 42 that applies force to the first brake unit 5 so that the first brake unit 5 moves. The caliper 4 extends in a predetermined direction D1 (in the left-right direction in FIGS. 3 and 4) and supports the first brake unit 5 and connects the caliper main body 41 and the support unit 43. And a connecting portion 44.

  Thereby, the 1st brake part 5 is movable with respect to the caliper 4 and the rotary body 2d, and the 2nd brake part 6 is integrated with the caliper 4 and can move with respect to the rotary body 2d. . In addition, the caliper main body 41 includes a base portion 41 a that is disposed on the rotating body 2 d side with respect to the first braking portion 5.

  The drive unit 42 is a first drive source 42a that applies a force in a direction approaching the support unit 43 (left direction in FIGS. 3 and 4) to the first braking unit 5, and a direction away from the support unit 43 (FIGS. 3 and 4). In FIG. 4, a second drive source 42 b that applies a force in the right direction) to the first braking portion 5 is provided. In the present embodiment, the first drive source 42a is an electromagnetic coil, and the second drive source 42b is a string spring. In addition, the 1st braking part 5 is provided with the magnetic part 52 which has magnetism in order to receive force from the 1st drive source 42a.

  The support portion 43 includes a flat support surface 43 a that is in contact with the first braking portion 5 in order to support the first braking portion 5. The first braking unit 5 includes a planar supported surface 52 a that contacts the support surface 43 a of the support unit 43. Moreover, the support part 43 accommodates the drive part 42, specifically, the 1st drive source 42a and the 2nd drive source 42b.

  The first driving source 42a applies a force to the first braking unit 5 when electricity is supplied, and the second driving source 42b constantly contracts and elastically deforms, thereby causing the first braking unit 5 to Giving power. Note that the force that the first drive source 42 a applies to the first braking unit 5 is greater than the force that the second drive source 42 b applies to the first braking unit 5.

  Therefore, when the first drive source 42a is energized, the force of the first drive source 42a is greater than the force of the second drive source 42b. The part 5 is in contact with the support part 43. Thereby, the braking parts 5 and 6 are each located in the position which leaves | separates from the rotary body 2d, ie, a standby position.

  On the other hand, when the energization to the first drive source 42a is stopped, only the force of the second drive source 42b is applied to the first braking unit 5, and as shown in FIG. Leaves the support 43. Thereby, the braking parts 5 and 6 are each located in the position in contact with the rotating body 2d, that is, the braking position.

  Thus, the braking parts 5 and 6 move with respect to the rotating body 2d in the direction D1 facing the rotating body 2d by receiving a force from the driving unit 42. Specifically, the braking units 5 and 6 are moved between a braking position in contact with the rotating body 2d and a standby position away from the rotating body 2d by receiving a force from the driving unit 42.

  At this time, the first braking portion 5 is guided by the connecting portion 44 so as to move along the predetermined direction D1 (the left-right direction in FIGS. 3 and 4) with respect to the caliper 4. In the present embodiment, the first braking portion 5 has an opening into which the connecting portion 44 is inserted, and the inner peripheral surface of the opening slides on the outer peripheral surface of the connecting portion 44.

  The first braking unit 5 is in contact with the support unit 43 when the braking units 5 and 6 are positioned at the standby position, and the first braking unit 5 is configured when the braking units 5 and 6 are positioned at the braking position. Is separated from the support portion 43. Further, when the braking parts 5 and 6 move from the standby position toward the braking position, the first braking part 5 approaches the base part 41a. That is, when the first braking unit 5 moves from the standby position toward the braking position, the distance between the first braking unit 5 and the base portion 41a becomes small.

  In addition, the braking device 3 provides a resistance against the force applied by the drive unit 42 to the first braking unit 5 when the first braking unit 5 moves from the braking position toward the standby position and hits the support unit 43. 1 is provided with a first drag section 7 applied to the first drag section 7. In addition, the braking device 3 provides the first braking unit with a resistance against the force applied by the drive unit 42 to the first braking unit 5 when the first braking unit 5 moves from the standby position toward the braking position and hits the rotating body 2d. 5 is provided with a second drag portion 8 to be applied to 5.

  A plurality of first drag portions 7 are provided. And the some 1st drag part 7 is arrange | positioned mutually apart in the direction which cross | intersects the direction D1 to which the 1st braking part 5 moves. In the present embodiment, the plurality of first drag portions 7 are arranged in parallel with an interval on the outer peripheral portion of the first braking portion 5. In addition, the quantity of the 1st drag part 7 is not specifically limited, For example, although one may be sufficient, it is preferable to provide two or more, and it is more preferable to provide three or more.

  A plurality of second drag portions 8 are provided. The plurality of second drag portions 8 are arranged away from each other in a direction intersecting the direction D1 in which the first braking portion 5 moves. In the present embodiment, the plurality of second drag portions 8 are arranged in parallel with an interval on the outer peripheral portion of the first braking portion 5. In addition, the quantity of the 2nd drag part 8 is not specifically limited, For example, although one may be sufficient, it is preferable to be provided with two or more, and it is more preferable to be provided with three or more.

  As shown in FIG. 5, the first drag portion 7 includes first and second magnets 71 and 72 arranged so that the same magnetic poles face each other so as to give a drag force to the first braking portion 5 by a repelling magnetic force. I have. The first drag portion 7 includes a first fixing portion 73 that fixes the first magnet 71 to the first braking portion 5, and a second fixing portion 74 that fixes the second magnet 72 to the support portion 43. It has.

  The first drag unit 7 applies a force in the direction in which the first braking unit 5 moves away from the support unit 43 (the right direction in FIG. 5) by the repulsive magnetic force of the first and second magnets 71 and 72. Part 5 is given. The direction of the drag by the first drag unit 7 is the driving force applied to the first brake unit 5 by the drive unit 42 (not shown in FIG. 5) when the first brake unit 5 hits the support unit 43. The direction is opposite to the direction of.

  That is, the first drag unit 7 gives the first brake unit 5 a drag force against the drive force that the drive unit 42 applies to the first brake unit 5 when the first brake unit 5 hits the support unit 43. Note that the direction of the driving force that the driving unit 42 applies to the first braking unit 5 when the first braking unit 5 hits the support unit 43 is determined by the first driving source 42a (not shown in FIG. 5). 1 is the direction of the force applied to the braking unit 5.

  Further, when the first braking part 5 hits the support part 43, the magnitude of the drag by the first drag part 7 is smaller than the magnitude of the drive force by the drive part 42. Note that the magnitude of the driving force by the driving unit 42 when the first braking unit 5 hits the support unit 43 varies from the driving force by the first driving source 42a to the second driving source 42b (shown in FIG. 5). Is the magnitude of the force minus the driving force.

  The first fixing portion 73 includes a first main body portion 73 a that is connected to the first braking portion 5. The first main body 73a accommodates the first magnet 71. The first main body portion 73a is connected to the outer peripheral portion of the first braking portion 5, specifically, the outer peripheral portion of the magnetic portion 52 of the first braking portion 5.

  The second fixing portion 74 includes a second main body portion 74 a connected to the support portion 43, an adjustment portion 74 b that can change the position of the second magnet 72 with respect to the support portion 43, and a plate that supports the second magnet 72. 74c. The second main body portion 74 a accommodates the second magnet 72. Note that the second main body portion 74 a is connected to the outer peripheral portion of the support portion 43.

  Thus, since the first magnet 71 is fixed to the first braking part 5 and the second magnet 72 is fixed to the support part 43, the first braking part 5 moves from the braking position toward the standby position. Accordingly, the distance between the first and second magnets 71 and 72 becomes smaller. And when the 1st braking part 5 is located in a stand-by position, the distance between the 1st and 2nd magnets 71 and 72 becomes the minimum.

  In addition, when the 1st braking part 5 is located in a standby position, the 1st magnet 71 and the 2nd magnet 72 are separated. That is, a space (gap) always exists between the first and second magnets 71 and 72 regardless of the position of the first braking portion 5.

  One end of the adjustment portion 74b is rotatably connected to the plate 74c, and the adjustment portion 74b includes a screw that is screwed into the second main body portion 74a. And the position of the 2nd magnet 72 is changed with respect to the support part 43 by changing the position in which the screw of the adjustment part 74b screws together with the 2nd main-body part 74a. In addition, the adjustment part 74b is not restricted to the structure which has a screw, For example, it is good also as a structure which can change the position fixed to the 2nd main-body part 74a by a fastening means or a clamping means.

  Thereby, since the distance between the 1st and 2nd magnets 71 and 72 can be adjusted when the 1st braking part 5 moves toward a standby position from a braking position and contacts the support part 43, 1st drag The drag force applied to the first braking unit 5 by the unit 7 can be adjusted. In the present embodiment, when the first braking unit 5 is located at the braking position, the first magnet 71 and the second magnet 72 are far apart from each other, so that the drag by the first drag unit 7 is zero. (Including the case where it occurs slightly to the extent that the operation of the first braking unit 5 is not affected).

  The second drag unit 8 includes first and second magnets 81 and 82 arranged so that the same magnetic poles face each other so as to provide a drag force to the first braking unit 5 by a repulsive magnetic force. The second drag portion 8 includes a first fixing portion 83 that fixes the first magnet 81 to the first braking portion 5, and a second fixing portion 84 that fixes the second magnet 82 to the base portion 41a. It has.

  The second drag unit 8 applies the force in the direction in which the first braking unit 5 moves away from the rotating body 2d (the left direction in FIG. 5) to the first braking by the repulsive magnetic force of the first and second magnets 81 and 82. Part 5 is given. The direction of the drag by the second drag unit 8 is opposite to the direction of the drive force that the drive unit 42 applies to the first brake unit 5 when the first brake unit 5 hits the rotating body 2d.

  That is, the second drag unit 8 gives the first brake unit 5 a drag force against the drive force that the drive unit 42 applies to the first brake unit 5 when the first brake unit 5 hits the rotating body 2d. The direction of the driving force that the driving unit 42 applies to the first braking unit 5 when the first braking unit 5 hits the rotating body 2d is the direction of the force that the second driving source 42b applies to the first braking unit 5. .

  In addition, when the first braking unit 5 hits the rotating body 2d, the magnitude of the drag by the second drag unit 8 is smaller than the magnitude of the drive force by the drive unit 42. It should be noted that the magnitude of the driving force by the driving section 42 when the first braking section 5 hits the rotating body 2d is the magnitude of the driving force by the second driving source 42b.

  The first fixing portion 83 includes a first main body portion 83 a connected to the first braking portion 5. The first main body 83 a accommodates the first magnet 81. The first main body portion 83a is connected to the outer peripheral portion of the first braking portion 5, specifically, the outer peripheral portion of the magnetic portion 52 of the first braking portion 5. In the present embodiment, the first magnet 81 and the first fixing portion 83 (first body portion 83a) of the second drag portion 8 are the first magnet 71 and the first fixing portion 73 (first portion) of the first drag portion 7, respectively. Although it is common with the main body 73a), it may be configured separately.

  The second fixing portion 84 includes a second main body portion 84a connected to the base portion 41a, an adjustment portion 84b that can change the position of the second magnet 82 with respect to the base portion 41a, and a plate that supports the second magnet 82. 84c. The second main body portion 84a accommodates the second magnet 82. The second main body portion 84a is connected to the outer peripheral portion of the base portion 41a.

  Thus, since the 1st magnet 81 is being fixed to the 1st braking part 5, and the 2nd magnet 82 is being fixed to the base part 41a, the 1st braking part 5 moves toward a braking position from a standby position. Accordingly, the distance between the first and second magnets 81 and 82 decreases. And when the 1st braking part 5 is located in a braking position, the distance between the 1st and 2nd magnets 81 and 82 becomes the minimum.

  In addition, when the 1st braking part 5 is located in a braking position, the 1st magnet 81 and the 2nd magnet 82 are separated. That is, a space (gap) always exists between the first and second magnets 81 and 82 regardless of the position of the first braking portion 5.

  One end of the adjustment portion 84b is rotatably connected to the plate 84c, and the adjustment portion 84b includes a screw that is screwed into the second main body portion 84a. And the position of the 2nd magnet 82 is changed with respect to the base part 41a by changing the position in which the screw of the adjustment part 84b screws together with the 2nd main-body part 84a. In addition, the adjustment part 84b is not restricted to the structure which has a screw, For example, it is good also as a structure which can change the position fixed to the 2nd main-body part 84a by a fastening means or a clamping means.

  Accordingly, the distance between the first and second magnets 81 and 82 when the first braking unit 5 moves from the standby position toward the braking position and hits the rotating body 2d can be adjusted. The drag force applied to the first braking unit 5 by the unit 8 can be adjusted. In the present embodiment, when the first braking unit 5 is located at the standby position, the first magnet 81 and the second magnet 82 are largely separated from each other, so that the drag by the second drag unit 8 is zero. (Including the case where it occurs slightly to the extent that the operation of the first braking unit 5 is not affected).

  By the way, since the magnets 71, 72, 81, and 82 are accommodated in the main body portions 73a, 74a, 83a, and 84a, even if the magnets 71, 72, 81, and 82 are damaged, the broken pieces are removed from the main body portion 73a. , 74a, 83a, 84a (for example, the broken pieces are prevented from entering between the support surface 43a and the supported surface 52a or between the contact surface 51 and the rotating body 2d).

  As shown in FIGS. 6 and 7, the caliper 4 includes an attachment mechanism 45 that is attached to the machine casing 2 c. Further, the caliper 4 includes a holding mechanism 46 that holds the braking portions 5 and 6 at the standby position.

  The attachment mechanism 45 includes a columnar part 45a extending from the machine casing 2c in a predetermined direction D1 (vertical direction in FIGS. 6 and 7) and a mounting part 45b attached to the columnar part 45a. The columnar portion 45 a is fixed to the machine casing 2 c, and the mounting portion 45 b is fixed to the caliper main body portion 41 of the caliper 4. In the present embodiment, the mounting portion 45 b is formed integrally with the caliper main body portion 41.

  The mounting portion 45b is guided to the columnar portion 45a along the direction D1 in which the columnar portion 45a extends. In the present embodiment, the mounting portion 45b has an opening into which the columnar portion 45a is inserted, and the inner peripheral surface of the mounting portion 45b slides on the outer peripheral surface of the columnar portion 45a.

  The holding mechanism 46 receives a force in the direction away from the machine casing 2c (downward in FIGS. 6 and 7) to the caliper 4, and the caliper 4 receives from the pushing section 46a by hitting the machine casing 2c. And a stop portion 46b that stops moving beyond a predetermined distance in a direction away from the machine casing 2c by force. In the present embodiment, the pushing portion 46a is a coiled spring disposed between the mounting portion 45b of the caliper 4 and the machine casing 2c.

  When the first drive source 42a is energized, as shown in FIG. 6, the braking portions 5 and 6 are held at the standby position by the stop portion 46b hitting the machine casing 2c. . Further, when the energization to the first drive source 42a is stopped and the braking parts 5 and 6 are located at the braking position as shown in FIG. 7, the stop part 46b is separated from the machine casing 2c. .

  The configurations of the elevator 1 and the braking device 3 according to the present embodiment are as described above. Next, the operational effects of the braking device 3 according to the present embodiment will be described with reference to FIGS. 8 and 9. 8 and 9 illustrate the structure of the braking device 3 in a simplified manner and exaggerate the operational effects.

  First, the effect of the 1st drag part 7 is demonstrated.

  As shown in FIG. 8, when the first braking unit 5 is located at the braking position, the supported surface 52 a of the first braking unit 5 and the support surface 43 a of the support unit 43 are inclined and intersect with each other. Suppose it was placed. From such a state, when the first braking portion 5 moves toward the standby position and the supported surface 52a and the support surface 43a are inclined and hit, a loud collision sound is generated or a collision sound is generated a plurality of times. To do.

  Therefore, in FIG. 8, when the first braking portion 5 is located at the braking position, the distance between the supported surface 52a and the supporting surface 43a is smaller toward the upper side. On the other hand, when the first braking portion 5 hits the support portion 43, the drag force applied to the first braking portion 5 by the upper first drag portion 7 is that the lower first drag portion 7 performs the first braking. It is larger than the drag force applied to the part 5. Specifically, when the first braking unit 5 hits the support unit 43, the distance between the upper first and second magnets 71 and 72 is between the lower first and second magnets 71 and 72. It is adjusted to be smaller than the distance.

  As a result, as the first braking unit 5 moves toward the standby position, the difference between the upper side and the lower side becomes smaller in the distance between the supported surface 52a and the support surface 43a. Then, as shown in FIG. 9, the first braking portion 5 hits the support portion 43 in a state where the supported surface 52 a and the support surface 43 a are parallel to each other. Therefore, it is possible to reduce the collision sound when the first braking portion 5 hits the support portion 43.

  Further, the first drag unit 7 provides the first brake unit 5 with a drag opposite to the force that the first brake unit 5 receives from the drive unit 42. Thereby, the force at the time of the 1st braking part 5 hitting support part 43 can be made small. Therefore, it is possible to further reduce the collision sound when the first braking portion 5 hits the support portion 43.

  By the way, the magnetic force generated between the first and second magnets 71 and 72 is inversely proportional to the square of the distance. Therefore, when the first braking unit 5 is located at the braking position, the first drag unit 7 exerts unnecessary drag on the first braking unit 5 because the distance between the first and second magnets 71 and 72 is large. Not given. On the other hand, when the first braking part 5 hits the support part 43, the first drag part 7 gives a necessary drag force to the first braking part 5 because the distance between the first and second magnets 71 and 72 is small.

  Therefore, when the first braking unit 5 moves from the braking position to the standby position, the first braking unit 5 does not receive the drag from the first drag unit 7 at the start of movement, and when it hits the support unit 43, the first braking unit 7 Received the drag of Thereby, the 1st brake part 5 moves smoothly, without the time for the 1st brake part 5 moving from a brake position to a standby position becoming unnecessarily long.

  In addition, when the braking part 5 is located in a standby position, since the 1st and 2nd magnets 71 and 72 are separated, the 1st and 2nd magnets 71 and 72 are always separated. This prevents the first and second magnets 71 and 72 from being damaged because the first and second magnets 71 and 72 do not come into contact with the movement of the braking unit 5. it can.

  Next, the function and effect of the second drag portion 8 will be described. In addition, since the effect of the 2nd force part 8 can be understood from the effect of the 1st force part 7, it demonstrates easily.

  As shown in FIG. 9, when the first braking unit 5 is located at the standby position, the contact surface 51 of the first braking unit 5 and the side plane of the rotating body 2d are arranged so as to intersect with each other. Suppose that In FIG. 9, when the first braking part 5 is located at the standby position, the distance between the contact surface 51 of the first braking part 5 and the side plane of the rotating body 2d is smaller toward the upper side.

  On the other hand, when the first braking part 5 hits the rotating body 2d, the drag force applied to the first braking part 5 by the upper second drag part 8 is the first braking part 8 by the lower second drag part 8. It is larger than the drag force applied to the part 5. Specifically, when the first braking unit 5 hits the rotating body 2d, the distance between the first and second magnets 81 and 82 on the upper side is between the first and second magnets 81 and 82 on the lower side. It is adjusted to be smaller than the distance.

  Thereby, with the movement of the first braking unit 5 toward the braking position, the distance between the contact surface 51 of the first braking unit 5 and the side plane of the rotating body 2d is the upper side and the lower side. The difference becomes smaller. Then, as shown in FIG. 8, the first braking portion 5 hits the rotating body 2d in a state where the contact surface 51 of the first braking portion 5 and the side plane of the rotating body 2d are parallel to each other. Therefore, the 2nd drag part 8 also has the above-mentioned operation effect which the 1st drag part 7 has similarly.

  As described above, the elevator 1 according to the present embodiment includes the sheave 2a around which the rope 1b connected to the car 1a is wound, the rotating body 2d that rotates together with the sheave 2a, and the braking for the elevator. And a device 3.

  The elevator braking device 3 according to the present embodiment is in contact with a rotating body 2d that rotates integrally with a sheave 2a wound around the outer periphery of a rope 1b connected to the car 1a. In order to brake the body 2d, the braking unit 5 is movable between a braking position in contact with the rotating body 2d and a standby position away from the rotating body 2d, and the braking unit 5 is moved so that the braking unit 5 moves. And a support portion 43 that contacts the braking portion 5 when the braking portion 5 is located at the standby position and separates from the braking portion 5 when the braking portion 5 is located at the braking position. And a drag unit 7 that applies to the brake unit 5 a drag against the force that the drive unit 42 applies to the brake unit 5 when the brake unit 5 moves from the brake position toward the standby position and hits the support unit 43. And the drag portion Includes first and second magnets 71 and 72 arranged so that the same magnetic poles face each other so as to give a drag force to the braking unit 5 by a repulsive magnetic force, and the first and second magnets 71 and 72 are The brake unit 5 is arranged so that the distance between the brake parts 5 decreases as the brake part 5 moves from the brake position toward the standby position.

  According to such a configuration, the braking unit 5 is moved from the braking position toward the standby position by being given a force from the driving unit 42. And the drag part 7 is provided with the 1st and 2nd magnets 71 and 72 arrange | positioned so that the same magnetic pole may face. Therefore, when the braking unit 5 hits the support unit 43, the drag unit 7 gives the braking unit 5 a drag force against the force applied by the drive unit 42 to the braking unit 5 due to the magnetic force repelled by the first and second magnets 71 and 72. Giving. Thereby, the collision sound at the time of the braking part 5 hitting the support part 43 can be made small.

  Further, as the braking unit 5 moves from the braking position toward the standby position, the distance between the first and second magnets 71 and 72 decreases. As a result, the drag applied to the braking unit 5 increases as the braking unit 5 moves from the braking position to the standby position. Accordingly, since the drag portion 5 is provided with a drag force having a necessary magnitude when the drag portion 7 is necessary, it is possible to suppress an unnecessarily long time for the brake portion 5 to move from the braking position to the standby position.

  Further, in the elevator braking device 3 according to the present embodiment, a plurality of the drag portions 7 are provided, and the drag portion 7 moves from the braking position toward the standby position so that the support portion 43 is provided with an adjusting portion 74b that can adjust the distance between the first and second magnets 71 and 72 when hitting 43.

  According to such a configuration, a plurality of the drag units 7 are provided, and the adjustment units 74b are provided. The adjusting unit 74b adjusts the distance between the first and second magnets 71 and 72 when the braking unit 5 moves from the braking position toward the standby position and hits the support unit 43, thereby adjusting the braking unit 5. The drag given to can be adjusted.

  Thereby, the adjustment part 74 b of each drag part 7 is individually operated, so that the braking part 5 can be parallel to the support part 43 when it hits the support part 43. Therefore, it is possible to further reduce the collision sound when the braking unit 5 hits the support unit 43.

  Further, in the elevator braking device 3 according to the present embodiment, the first magnet 71 is fixed to the braking portion 5, the second magnet 72 is fixed to the support portion 43, and The adjustment part 74b is at least one of the position of the first magnet 71 relative to the braking part 5 and the position of the second magnet 72 relative to the support part 43 (in this embodiment, the second magnet 72 The position of the support unit 43 is changeable.

  According to such a configuration, the first magnet 71 is fixed to the braking unit 5, and the second magnet 72 is fixed to the support unit 43. And the adjustment part 74b is a position with respect to the support part 43 of the 2nd magnet 72 in this embodiment at least one of the position with respect to the braking part 5 of the 1st magnet 71, and the position with respect to the support part 43 of the 2nd magnet 72. ). Thereby, the distance between the 1st and 2nd magnets 71 and 72 when the braking part 5 moves toward a standby position from a braking position and contacts the support part 43 can be adjusted.

  In addition, the elevator braking device 3 according to the present embodiment is configured so that the rope 1b connected to the car 1a contacts the rotating body 2d that rotates integrally with the sheave 2a wound around the outer periphery, thereby rotating the rotating device 2d. In order to brake the body 2d, the braking unit 5 is movable between a braking position in contact with the rotating body 2d and a standby position away from the rotating body 2d, and the braking unit 5 is moved so that the braking unit 5 moves. A driving unit 42 that applies force to 5 and a resistance against the force that the driving unit 42 applies to the braking unit 5 when the braking unit 5 moves from the standby position toward the braking position and hits the rotating body 2d. A first and second magnet disposed so that the same magnetic poles face each other so as to apply a drag to the braking unit 5 by a repulsive magnetic force. 81, 82, First and second magnets 81 and 82, the brake unit 5 so that the distance therebetween becomes smaller along with it moves toward the braking position from the standby position, is arranged.

  According to such a configuration, the braking unit 5 is moved from the standby position toward the braking position by being given a force from the driving unit 42. And the drag part 8 is equipped with the 1st and 2nd magnets 81 and 82 arrange | positioned so that the same magnetic pole may face. Therefore, when the braking unit 5 hits the rotating body 2d, the drag unit 8 causes the braking unit 5 to exert a drag against the force applied by the drive unit 42 to the braking unit 5 by the magnetic force repelled by the first and second magnets 81 and 82. Giving. Thereby, the collision sound at the time of the braking part 5 hitting the rotary body 2d can be made small.

  Further, as the braking unit 5 moves from the standby position toward the braking position, the distance between the first and second magnets 81 and 82 decreases. Thereby, the drag applied to the braking unit 5 increases as the braking unit 5 moves from the standby position to the braking position. Therefore, when the drag unit 8 is necessary, a necessary amount of drag is applied to the braking unit 5, so that it is possible to suppress an unnecessarily long time for the braking unit 5 to move from the braking position to the standby position. .

  Further, in the elevator braking device 3 according to the present embodiment, a plurality of the drag units 8 are provided, and the drag unit 8 is configured such that the brake unit 5 moves from the standby position toward the brake position and the rotating body. It is the structure of providing the adjustment part 84b which can adjust the distance between the said 1st and 2nd magnets 81 and 82 at the time of hitting 2d.

  According to such a configuration, a plurality of drag units 8 are provided, and each of the drag units 8 includes an adjusting unit 84b. The adjusting unit 84b adjusts the distance between the first and second magnets 81 and 82 when the braking unit 5 moves from the standby position toward the braking position and hits the rotating body 2d. The drag given to can be adjusted.

  Thereby, the adjustment part 84b of each drag part 8 is operated individually, so that the braking part 5 is parallel to the rotating body 2d when it hits the rotating body 2d. Therefore, it is possible to further reduce the collision sound when the braking unit 5 hits the rotating body 2d.

  Further, the elevator braking device 3 according to the present embodiment includes a base portion 41a that reduces the distance from the braking portion 5 when the braking portion 5 moves from the standby position toward the braking position. One magnet 81 is fixed to the braking portion 5, the second magnet 82 is fixed to the base portion 41 a, and the adjustment portion 84 b is a position of the first magnet 81 relative to the braking portion 5. And at least one of the positions of the second magnet 82 relative to the base portion 41a (in this embodiment, the position relative to the base portion 41a of the second magnet 82) is configured to be changeable. is there.

  According to such a configuration, the first magnet 81 is fixed with respect to the braking portion 5, and the second magnet 82 is fixed with respect to the base portion 41a. The adjusting portion 84b is at least one of the position of the first magnet 81 relative to the braking portion 5 and the position of the second magnet 82 relative to the base portion 41a (in this embodiment, relative to the base portion 41a of the second magnet 82). Position). Thereby, the distance between the 1st and 2nd magnets 81 and 82 when the braking part 5 moves toward a braking position from a stand-by position and hits the rotary body 2d can be adjusted.

  The elevator braking device 3 and the elevator 1 are not limited to the configuration of the above-described embodiment, and are not limited to the above-described effects. It goes without saying that the elevator braking device 3 and the elevator 1 can be variously modified without departing from the gist of the present invention. For example, it is needless to say that one or a plurality of configurations and methods according to various modifications described below may be arbitrarily selected and employed in the configurations and methods according to the above-described embodiments.

  For example, in the braking device 3, the magnetic force generated between the first and second magnets 71, 72, 81, and 82 (repulsive force generated at the same distance) in the plurality of drag portions 7 and 8 may be the same. Well, different configurations may be used. Further, for example, in order to individually change the magnetic forces of the drag portions 7 and 8, the drag portions 7 and 8 can accommodate a plurality of magnets 71, 72, 81, and 82 in the main body portions 73a, 74a, 83a, and 84a. And you may be comprised so that selection of the quantity of the magnets 71, 72, 81, 82 to accommodate is selectable.

  Further, the braking device 3 according to the above-described embodiment is applied to the first drag portion 7 that applies a drag force to the braking portion 5 when the braking portion 5 hits the support portion 43 and the braking portion 5 when the braking portion 5 hits the rotating body 2d. It is the structure of having the 2nd drag part 8 which gives a drag. However, the braking device 3 is not limited to such a configuration. For example, the braking device 3 includes a drag portion 7 that applies a drag force to the brake portion 5 when the brake portion 5 hits the support portion 43, and a drag portion 8 that applies a drag force to the brake portion 5 when the brake portion 5 hits the rotating body 2d. Of these, a configuration in which only one of them is provided may be employed.

  In the braking device 3 according to the above embodiment, the first drag portion 7 includes the adjusting portion 74b, and the distance between the first and second magnets 71 and 72 when the braking portion 5 hits the support portion 43 is set. The configuration is adjustable. However, the braking device 3 is not limited to such a configuration. For example, the configuration in which the distance between the first and second magnets 71 and 72 when the braking unit 5 hits the support unit 43 is invariable and constant may be employed.

  In the braking device 3 according to the above embodiment, the second drag unit 8 includes the adjusting unit 84b, and the distance between the first and second magnets 81 and 82 when the braking unit 5 hits the rotating body 2d is set. The configuration is adjustable. However, the braking device 3 is not limited to such a configuration. For example, the configuration in which the distance between the first and second magnets 81 and 82 when the braking unit 5 hits the rotating body 2d is invariable and constant may be employed.

  Moreover, in the braking device 3 according to the above-described embodiment, the adjustment unit 74 b of the first drag unit 7 is configured to be able to change the position of the second magnet 72 with respect to the support unit 43. However, the braking device 3 is not limited to such a configuration. For example, the adjustment unit 74b of the first drag unit 7 may be configured such that the position of the first magnet 71 with respect to the braking unit 5 can be changed, and the positions of the first and second magnets 71 and 72 can be changed. It may be configured to be changeable.

  In the braking device 3 according to the above-described embodiment, the adjustment portion 84b of the second drag portion 8 is configured to be able to change the position of the second magnet 82 relative to the base portion 41a. However, the braking device 3 is not limited to such a configuration. For example, the adjustment portion 84b of the second drag portion 8 may be configured such that the position of the first magnet 81 with respect to the braking portion 5 can be changed, and the positions of the first and second magnets 81 and 82 can be changed. It may be configured to be changeable.

  In the braking device 3 according to the embodiment, the first magnet 71 of the first drag portion 7 is fixed to the braking portion 5, and the second magnet 72 is fixed to the support portion 43. This is the configuration. However, the braking device 3 is not limited to such a configuration. For example, one of the first and second magnets 71 and 72 of the first drag portion 7 may be fixed to the machine frame 2c of the hoisting machine 2.

  As an example, the first magnet 71 of the first drag unit 7 may be fixed to the braking unit 5, and the second magnet 72 may be fixed to the machine frame 2 c of the hoisting machine 2. . In short, the first and second magnets 71 and 72 of the first drag portion 7 are at positions where the drag force is applied to the brake portion 5 when the brake portion 5 hits the support portion 43, and the brake portion 5 is moved from the brake position. What is necessary is just to respectively arrange | position in the position where a mutual distance becomes small with moving toward a stand-by position.

  In the braking device 3 according to the above-described embodiment, the first magnet 81 of the second drag portion 8 is fixed to the braking portion 5 and the second magnet 82 is fixed to the base portion 41a. This is the configuration. However, the braking device 3 is not limited to such a configuration. For example, one of the first and second magnets 81 and 82 of the second drag portion 8 may be fixed to the machine casing 2c of the hoisting machine 2.

  As an example, the first magnet 81 of the second drag unit 8 may be fixed to the braking unit 5, and the second magnet 82 may be fixed to the machine frame 2 c of the hoisting machine 2. . In short, the first and second magnets 81 and 82 of the second drag portion 8 are at positions where the drag force is applied to the brake portion 5 when the brake portion 5 hits the rotating body 2d, and the brake portion 5 is moved from the standby position. What is necessary is just to each arrange | position at the position where a mutual distance becomes small in connection with moving toward a braking position.

  Moreover, the braking device 3 according to the above-described embodiment has a configuration in which the caliper 4 is a disc brake of a floating caliper that moves relative to the rotating body 2d. However, the braking device 3 is not limited to such a configuration. For example, as shown in FIG. 10, the braking device 3 may be a fixed-type caliper (opposing caliper) disc brake in which the caliper 4 is fixed to the rotating body 2d.

  In such a configuration, the braking device 3 has not only the drag portions 7 and 8 that provide a drag force to the first braking portion 5 that can move with respect to the rotating body 2 d and the caliper 4, but also the rotating body 2 d and the caliper 4. There are provided drag parts 7 and 8 for applying a drag force to the movable second braking part 6. In addition, the structure of providing only one of the drag parts 7 and 8 which provide a drag against the first brake part 5 and the drag parts 7 and 8 which provide a drag against the second brake part 6 may be provided.

  Moreover, in the elevator 1 which concerns on the said embodiment, it is the structure that the rotary body 2d is connected with the sheave 2a. However, the elevator 1 is not limited to such a configuration. For example, as shown in FIG. 11, the rotating body 2d may be configured to rotate integrally with the sheave 2a by being connected to the shaft portion 2e to which the sheave 2a is connected.

  DESCRIPTION OF SYMBOLS 1 ... Elevator, 1a ... Car, 1b ... Rope, 1c ... Counterweight, 2 ... Hoisting machine, 2a ... Sheave, 2b ... Electric motor, 2c ... Machine frame, 2d ... Rotating body, 2e ... Shaft part, 3 ... Braking device, 3a ... fixing member, 4 ... caliper, 5 ... first braking section, 6 ... second braking section, 7 ... first drag section, 8 ... second drag section, 41 ... caliper body section, 41a ... base section , 42 ... drive section, 42 a ... first drive source, 42 b ... second drive source, 43 ... support section, 43 a ... support surface, 44 ... connection section, 45 ... mounting mechanism, 45 a ... columnar section, 45 b ... mounting section, 46 ... Holding mechanism, 46a ... Pushing part, 46b ... Stopping part, 51 ... Contact surface, 52 ... Magnetic part, 52a ... Supported surface, 61 ... Contact surface, 71 ... First magnet, 72 ... Second magnet, 73 ... 1st fixing | fixed part, 73a ... 1st main-body part, 74 ... 2nd fixing | fixed part, 74a ... 2nd main-body part, 74b ... adjustment part, 74 ... Plate, 81 ... First magnet, 82 ... Second magnet, 83 ... First fixing part, 83a ... First body part, 84 ... Second fixing part, 84a ... Second body part, 84b ... Adjusting part, 84c ... plate

Claims (7)

A braking position in contact with the rotating body and the rotating body in order to brake the rotating body by contacting a rotating body that rotates integrally with a sheave around which a rope connected to the car is wound. A braking part movable between a standby position away from
A drive unit that applies force to the brake unit such that the brake unit moves;
A support portion that contacts the braking portion when the braking portion is positioned at the standby position, and is separated from the braking portion when the braking portion is positioned at the braking position;
A drag unit that provides the brake unit with a resistance against a force that the drive unit applies to the brake unit when the brake unit moves from a brake position toward a standby position and hits the support unit;
The drag portion includes first and second magnets arranged so that the same magnetic poles face each other so as to give a drag force to the braking portion by a repulsive magnetic force,
The elevator braking device, wherein the first and second magnets are arranged such that a distance between the first and second magnets decreases as the braking unit moves from the braking position toward the standby position. A plurality of the drag portions are provided,
The drag section includes an adjustment section capable of adjusting a distance between the first and second magnets when the braking section moves from a braking position toward a standby position and hits the support section. The brake device for elevators as described. The first magnet is fixed to the braking portion;
The second magnet is fixed to the support;
The elevator braking device according to claim 2, wherein the adjustment unit is configured to be capable of changing at least one of a position of the first magnet with respect to the braking unit and a position of the second magnet with respect to the support unit. . A braking position in contact with the rotating body and the rotating body in order to brake the rotating body by contacting a rotating body that rotates integrally with a sheave around which a rope connected to the car is wound. A braking part movable between a standby position away from
A drive unit that applies force to the brake unit such that the brake unit moves;
A drag unit that provides the brake unit with a resistance against a force that the drive unit applies to the brake unit when the brake unit moves from a standby position toward the brake position and hits the rotating body;
The drag portion includes first and second magnets arranged so that the same magnetic poles face each other so as to give a drag force to the braking portion by a repulsive magnetic force,
The elevator braking device, wherein the first and second magnets are disposed such that a distance between the first and second magnets decreases as the braking unit moves from the standby position toward the braking position. A plurality of the drag portions are provided,
The said drag part is provided with the adjustment part which can adjust the distance between the said 1st and 2nd magnet when the said braking part moves toward a braking position from a stand-by position and contacts the said rotary body. The brake device for elevators as described. When the braking part moves from the standby position toward the braking position, the base part is provided with a small distance from the braking part,
The first magnet is fixed to the braking portion;
The second magnet is fixed to the base portion;
The elevator braking device according to claim 5, wherein the adjustment unit is configured to be able to change at least one of a position of the first magnet with respect to the braking unit and a position of the second magnet with respect to the base unit. . A sheave on which a rope connected to the car is wound around the outer circumference;
A rotating body that rotates integrally with the sheave;
An elevator comprising the braking device for an elevator according to any one of claims 1 to 6.

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