JP2018144929A - Elevator braking device and elevator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator braking device and an elevator capable of hitting a braking portion in parallel with a support portion. An elevator includes a braking device for an elevator. The braking device for an elevator is a plurality of applying parts that give a force parallel to the force applied to the braking part by the driving part when the braking part moves from the braking position to the standby position and hits the support part. The applying portion includes an elastic portion that applies a force to the braking portion by elastically deforming, and an adjusting portion that can adjust the amount of elastic deformation of the elastic portion when the braking portion hits the support portion. [Selection diagram] Fig. 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. The braking unit hits the rotating body when moving toward the braking position, and hits a support unit that supports the braking unit when moving toward the standby position. Therefore, a collision sound is generated when the braking unit hits the rotating body or the support unit.

  By the way, the braking part may be inclined with respect to the rotating body and the support part. In such a case, the collision sound generated when the braking unit hits the rotating body or the support unit by the braking unit hitting the rotating body or the braking unit hitting the support unit is inclined, It grows up or occurs multiple times.

JP 10-129989 A

  Accordingly, a first problem is to provide an elevator braking device and an elevator in which the braking unit can come in parallel with the support unit.

  Moreover, the 2nd subject is providing the braking device for elevators and an elevator with which a braking part can hit | abut in parallel with a rotary body.

  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 comes into contact with the brake unit, the support unit is separated from the brake unit when the brake unit is located at the brake position, and when the brake unit moves from the brake position toward the standby position and hits the support unit, A plurality of force-applying parts that apply a force parallel to the force that the driving part applies to the brake part to the brake part, and the force-applying part applies force to the brake part by elastic deformation. The elastic part and the braking part hit the support part Of, and a regulating unit that can regulate the amount of the elastic portion is elastically deformed.

  In such an elevator braking device, the elastic portion has a resistance against a force applied to the braking portion by the driving portion when the braking portion moves from a braking position toward a standby position and hits the support portion. It may be configured to be elastically deformed so as to be applied to the braking portion.

  In the elevator braking apparatus, the adjustment unit includes a fixing unit that fixes the first end of the elastic unit to the braking unit or the support unit, and the fixing unit includes the braking unit. The position of the first end portion of the elastic portion is configured to be changeable with respect to the braking portion or the support portion so that the elastic portion is restored without elastic deformation when the elastic portion is located at the braking position. It may be configured as follows.

  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 plurality of force-applying portions that apply a force parallel to the force applied by the drive unit to the brake unit when the drive unit moves toward the brake position and hits the rotating body, The portion includes an elastic portion that applies a force to the braking portion by elastic deformation, and an adjustment portion that can adjust an amount of elastic deformation of the elastic portion when the braking portion hits the rotating body.

  In such an elevator braking device, the elastic portion has a resistance against a force applied to the braking portion by the driving portion when the braking portion moves from the standby position toward the braking position and hits the rotating body. It may be configured to be elastically deformed so as to be applied to the braking portion.

  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 adjustment portion includes the elastic portion. A fixing portion for fixing the first end portion to the braking portion or the base portion is provided, and the fixing portion is restored without elastic deformation of the elastic portion when the braking portion is positioned at the standby position. In addition, the configuration may be such that the position of the first end portion of the elastic portion is changeable with respect to the braking portion or the base portion.

  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.

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 vertical cross-sectional view of the force applying unit 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 vertical cross-sectional view for explaining the operation and effect of the force applying 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 vertical cross-sectional view for explaining the action and effect of the force applying 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 first force applying unit according to another embodiment. FIG. 11 is a schematic longitudinal sectional view of a first force applying unit according to still another embodiment. FIG. 12 is a schematic longitudinal sectional view of a braking device according to still another embodiment. FIG. 13 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 to 13), the dimensional ratio in the drawing does not necessarily match the actual dimensional ratio, and the dimensional ratio between the drawings does 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. And the outer width dimension of the magnetic part 52 is larger than the outer width dimension of the support part 43, and is larger than the outer width dimension of the base part 41a.

  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.

  Further, the braking device 3 has a force parallel to the force that the drive unit 42 applies 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 (see FIG. 3 and 4, a first force applying portion 7 that provides the first braking portion 5 with the left and right direction) is provided. Further, the braking device 3 applies a force parallel to 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. A second force applying unit 8 is provided to the first braking unit 5.

  The force parallel to the force (driving force) applied to the first braking unit 5 by the driving unit 42 is not only the force in a direction completely parallel to the direction of the driving force but also the direction of the driving force. Also includes forces in directions that contain components. For example, the angle at which the direction of the parallel force intersects the direction of the driving force is preferably 45 ° or less, more preferably 30 ° or less, and still more preferably 10 ° or less. It is very preferable that the angle is 5 ° or less.

  A plurality of first force applying portions 7 are provided. The plurality of first force applying portions 7 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 first force applying portions 7 are arranged in parallel to the outer peripheral portion of the first braking portion 5 with an interval. In addition, the quantity of the 1st force addition part 7 is not specifically limited, What is necessary is just to provide two or more, for example, it is more preferable that three or more are provided.

  A plurality of second force applying portions 8 are provided. The plurality of second force applying 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 force applying portions 8 are arranged in parallel to the outer peripheral portion of the first braking portion 5 with an interval. In addition, the quantity of the 2nd force application part 8 is not specifically limited, What is necessary is just to provide two or more, for example, it is more preferable that three or more are provided.

  As shown in FIG. 5, the first braking portion 5 is in contact with the first and second force applying portions 7 and 8 in order to receive the force from the first and second force applying portions 7 and 8. It has. The contact portion 53 is fixed to the outer peripheral portion of the magnetic portion 52 formed in a disc shape, and is disposed so as to face the first and second force applying portions 7 and 8. The abutting portion 53 may be formed integrally with the magnetic portion 52 or may be disposed over the entire circumference of the magnetic portion 52.

  The first force applying portion 7 is elastically deformed to give a force to the first braking portion 5 and the first elastic portion 71 and the first braking portion 5 moves from the braking position toward the standby position and hits the support portion 43. And a first adjusting portion 72 that can adjust the amount of elastic deformation of the first elastic portion 71. In the present embodiment, the first elastic portion 71 is a rubber member.

  Since the first elastic portion 71 is elastically contracted when the first braking portion 5 hits the support portion 43, the first force applying portion 7 is elastically deformed by the elastic restoring force of the first elastic portion 71. A force in the direction in which the braking unit 5 moves away from the support unit 43 (right direction in FIG. 5) is applied to the first braking unit 5. The direction of the force applied by the first force applying unit 7 is the driving that the driving unit 42 (not shown in FIG. 5) applies to the first braking unit 5 when the first braking unit 5 hits the support unit 43. The direction is opposite to the direction of force.

  In other words, the first force applying unit 7 provides the first braking unit 5 with a resistance against 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. 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 portion 5 hits the support portion 43, the magnitude of the drag force by the first force applying portion 7 is smaller than the magnitude of the driving force by the drive portion 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 adjusting portion 72 includes a first fixing portion 72 a that fixes the first end portion 71 a of the first elastic portion 71 to the support portion 43. The first fixing portion 72a includes a main body portion 72b coupled to the support portion 43, a change portion 72c capable of changing the position of the first end portion 71a of the first elastic portion 71 with respect to the support portion 43, and a first And a plate 72 d that supports the first end 71 a of the first elastic portion 71. The main body portion 72 b accommodates the first end portion 71 a side of the first elastic portion 71. The main body portion 72 b is connected to the outer peripheral portion of the support portion 43.

  Thus, since the 1st elastic part 71 is being fixed to the support part 43, the 2nd end of the 1st elastic part 71 is accompanied with the 1st braking part 5 moving toward a standby position from a braking position. The distance between the part 71b and the 1st braking part 5 becomes small. Then, after the first braking part 5 hits the first elastic part 71, the first elastic part 71 contracts elastically as the first braking part 5 moves from the braking position toward the standby position. Since the amount increases, the force applied to the first braking unit 5 increases.

  One end of the changing portion 72c is rotatably connected to the plate 72d, and the changing portion 72c includes a screw that is screwed with the main body portion 72b. And the position of the 1st end part 71a of the 1st elastic part 71 is changed with respect to the support part 43 by changing the position in which the screw of the change part 72c screws together with the main-body part 72b. In addition, the 1st adjustment part 72 is not restricted to the structure which has a screw, For example, it is good also as a structure which can change the position where the 1st end part 71a of the 1st elastic part 71 is fixed by a fastening means or a clamping means. .

  As a result, the amount of elastic deformation of the first elastic portion 71 when the first braking portion 5 moves from the braking position toward the standby position and hits the support portion 43 can be adjusted. The force which 7 gives to the 1st braking part 5 can be adjusted. Note that the first fixing portion 72a has a first end portion 71a of the first elastic portion 71 so that the first elastic portion 71 is restored without elastic deformation when the first braking portion 5 is located at the braking position. The position is configured to be changeable with respect to the support portion 43.

  In the present embodiment, the first elastic portion is arranged such that the second end portion 71b of the first elastic portion 71 is free from the first braking portion 5 when the first braking portion 5 is located at the braking position. The position of the first end portion 71 a of 71 is adjusted with respect to the support portion 43. Therefore, when the first braking unit 5 is positioned at the braking position, the drag force by the first force applying unit 7 is zero (including a case where the drag is slightly generated so as not to affect the operation of the first braking unit 5). It has become. FIG. 5 shows a state in which the first braking unit 5 is located between the standby position and the braking position.

  In addition, when the 1st braking part 5 is located in a braking position, the position of the 1st end part 71a of the 1st elastic part 71 is so that the 1st elastic part 71 may contact the 1st braking part 5 and may elastically deform. It may be adjusted with respect to the support part 43. According to this, regardless of the position of the first braking part 5, the first elastic part 71 is always in contact with the first braking part 5 and elastically deforms. For example, the first braking part 5 hits the rotating body 2 d. At this time, the vibration of the first braking portion 5 can be absorbed by the first elastic portion 71.

  The second force applying portion 8 is elastically deformed to give a force to the first braking portion 5 and the second elastic portion 81. The first braking portion 5 moves from the standby position toward the braking position and hits the rotating body 2d. And a second adjusting portion 82 that can adjust the amount of elastic deformation of the second elastic portion 81. In the present embodiment, the second elastic portion 81 is a rubber member.

  Since the second elastic part 81 is elastically deformed by contraction when the first braking part 5 hits the rotating body 2d, the second force applying part 8 is elastically deformed by the elastic restoring force of the second elastic part 81. A force in a direction in which the braking unit 5 moves away from the rotating body 2d (leftward in FIG. 5) is applied to the first braking unit 5. The direction of the force applied by the second force applying unit 8 is the driving that the driving unit 42 (not shown in FIG. 5) gives to the first braking unit 5 when the first braking unit 5 hits the rotating body 2d. The direction is opposite to the direction of force.

  That is, the second force applying unit 8 gives the first braking unit 5 a resistance against 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. 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 force by the second force applying unit 8 is smaller than the magnitude of the driving force by the driving 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 2nd adjustment part 82 is provided with the 2nd fixing | fixed part 82a which fixes the 1st end part 81a of the 2nd elastic part 81 with respect to the base part 41a. The second fixing portion 82a includes a main body portion 82b coupled to the base portion 41a, a changing portion 82c capable of changing the position of the first end portion 81a of the second elastic portion 81 with respect to the base portion 41a, And a plate 82d that supports the first end 81a of the second elastic portion 81. The main body portion 82 b accommodates the first end portion 81 a side of the second elastic portion 81. The main body portion 82b is connected to the outer peripheral portion of the base portion 41a.

  Thus, since the 2nd elastic part 81 is being fixed to base part 41a, the 2nd end of the 2nd elastic part 81 is accompanied with the 1st braking part 5 moving toward a braking position from a standby position. The distance between the part 81b and the 1st braking part 5 becomes small. Then, after the first braking part 5 hits the second elastic part 81, the elastic deformation that the second elastic part 81 contracts as the first braking part 5 moves from the standby position toward the braking position. Since the amount increases, the force applied to the first braking unit 5 increases.

  One end portion of the changing portion 82c is rotatably connected to the plate 82d, and the changing portion 82c includes a screw that is screwed with the main body portion 82b. And the position of the 1st end part 81a of the 2nd elastic part 81 is changed with respect to the base part 41a by changing the position in which the screw of the change part 82c screws together with the main-body part 82b. In addition, the 2nd adjustment part 82 is not restricted to the structure which has a screw, For example, it is good also as a structure which can change the position where the 1st end part 81a of the 2nd elastic part 81 is fixed by a fastening means or a clamping means. .

  As a result, the amount of elastic deformation of the second elastic portion 81 when the first braking portion 5 moves from the standby position toward the braking position and hits the rotating body 2d can be adjusted. The force which 8 gives to the 1st braking part 5 can be adjusted. Note that the second fixing portion 82a has a first end portion 81a of the second elastic portion 81 so that the second elastic portion 81 is restored without elastic deformation when the first braking portion 5 is located at the standby position. The position is configured to be changeable with respect to the base portion 41a.

  In the present embodiment, the second elastic portion is arranged such that the second end portion 81b of the second elastic portion 81 is free from the first braking portion 5 when the first braking portion 5 is located at the standby position. The position of the first end portion 81a of the 81 is adjusted with respect to the base portion 41a. Therefore, when the first braking unit 5 is located at the standby position, the drag force by the second force applying unit 8 is zero (including a case where the drag is slightly generated so as not to affect the operation of the first braking unit 5). It has become.

  Note that the position of the first end 81a of the second elastic portion 81 is such that the second elastic portion 81 is elastically deformed in contact with the first braking portion 5 when the first braking portion 5 is located at the standby position. You may adjust with respect to the base part 41a. According to this, regardless of the position of the first braking part 5, the second elastic part 81 is always in contact with the first braking part 5 and elastically deforms. For example, the first braking part 5 hits the support part 43. At this time, the vibration of the first braking portion 5 can be absorbed by the second elastic portion 81.

  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 applied 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 force applied to the first braking portion 5 by the upper first applying portion 7 is the first applying portion 7 on the lower side. 1 greater than the force applied to the braking unit 5. Specifically, when the first braking portion 5 hits the support portion 43, the amount of contraction elastic deformation of the upper first elastic portion 71 is larger than the amount of contraction elastic deformation of the lower first elastic portion 71. It is adjusted to become.

  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 force applying unit 7 gives the first braking unit 5 a drag opposite to the force that the first braking 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, when the first braking part 5 is located at the braking position, the first elastic part 71 is separated from the first braking part 5, so that the first force applying part 7 is not necessary for the first braking part 5. Does not give a strong drag. On the other hand, when the first braking portion 5 hits the support portion 43, the first elastic portion 71 hits the first braking portion 5 and is elastically deformed to give the first braking portion 5 necessary drag.

  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 loading unit 7 at the start of the movement, and when the first braking unit 5 hits the support unit 43, the first loading unit Received drag from 7 Thus, the first braking unit 5 moves smoothly without unnecessarily increasing the time for the first braking unit 5 to move from the braking position to the standby position.

  Next, the effect of the 2nd force application part 8 is demonstrated. In addition, since the effect of the 2nd force application part 8 can be understood from the effect of the 1st force application 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 portion 5 hits the rotating body 2d, the drag force applied to the first braking portion 5 by the upper second force applying portion 8 is the second second force applying portion 8 which is 1 The drag force applied to the braking unit 5 is larger. Specifically, when the first braking portion 5 hits the rotating body 2d, the amount of contraction elastic deformation of the upper second elastic portion 81 is larger than the amount of contraction elastic deformation of the lower second elastic portion 81. It is adjusted to become.

  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 force application part 8 has the above-mentioned operation effect which the 1st force application 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. When the braking unit 5 moves from the braking position toward the standby position and hits the support unit 43, a force parallel to the force applied to the braking unit 5 by the driving unit 42 is applied to the braking unit 5. A plurality of force-applying portions 7 for providing The force applying part 7 is capable of adjusting an elastic part 71 that applies a force to the braking part 5 by elastic deformation, and an amount of elastic deformation of the elastic part 71 when the braking part 5 hits the support part 43. And an adjustment unit 72.

  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. The force applying portion 7 includes an elastic portion 71, and the elastic portion 71 is elastically deformed when the braking portion 5 moves from the braking position toward the standby position and hits the support portion 43. Thereby, the elastic part 71 gives the braking part 5 a force parallel to the force that the driving part 42 gives to the braking part 5.

  Further, the force applying unit 7 includes an adjusting unit 72, and the adjusting unit 72 adjusts the amount of elastic deformation of the elastic unit 71 when the braking unit 5 hits the support unit 43. The applied force can be adjusted. Thereby, when each adjusting part 72 of the plurality of force applying parts 7 is individually operated, the braking part 5 becomes parallel to the support part 43 when it hits the support part 43. Therefore, for example, since the braking part 5 hits the support part 43 in parallel, the collision sound when the braking part 5 hits the support part 43 can be reduced.

  Further, in the elevator braking device 3 according to the present embodiment, the elastic portion 71 is configured such that the driving portion 42 is moved when the braking portion 5 moves from the braking position toward the standby position and hits the support portion 43. The structure is such that it is elastically deformed so that a resistance against the force applied to the braking unit 5 is applied to the braking unit 5.

  According to such a configuration, the elastic portion 71 is elastically deformed, so that when the braking portion 5 moves from the braking position toward the standby position and hits the support portion 43, the force applied to the braking portion 5 by the driving portion 42 is applied. A drag force is applied to the braking unit 5. Thereby, since the collision force when the braking part 5 hits the support part 43 is reduced, the collision sound when the braking part 5 hits the support part 43 can be reduced.

  Further, in the elevator braking device 3 according to the present embodiment, the adjusting unit 72 is configured such that the first end 71a of the elastic portion 71 is connected to the braking unit 5 or the support unit 43 (in the present embodiment, the support unit 43). A fixing portion 72a for fixing to the portion 43), and the fixing portion 72a is configured so that the elastic portion 71 is restored without elastic deformation when the braking portion 5 is located at a braking position. 71 is configured such that the position of the first end portion 71a of the 71 can be changed with respect to the braking portion 5 or the support portion 43 (the support portion 43 in the present embodiment).

  According to such a configuration, the adjustment portion 72 includes the fixing portion 72a that fixes the first end portion 71a of the elastic portion 71 to the braking portion 5 or the support portion 43 (the support portion 43 in the present embodiment). ing. And the position of the 1st end part 71a of the elastic part 71 is changed with respect to the braking part 5 or the support part 43 (in this embodiment, the support part 43) by the fixing | fixed part 72a. Can be restored without elastic deformation of the elastic portion 71 when the is positioned at the braking position.

  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 a force to 5 and a 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 plurality of force-applying portions 8 that apply a sufficient force to the braking portion 5, and the force-applying portion 8 is elastically deformed to provide a force to the braking portion 5, and the braking portion 5 The elastic portion 81 when hitting the rotating body 2d It comprises a adjustable adjusting unit 82 the amount to be gender variations, the.

  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. The force applying portion 8 includes an elastic portion 81. The elastic portion 81 is elastically deformed when the braking portion 5 moves from the standby position toward the braking position and hits the rotating body 2d. Thereby, the elastic part 81 gives a force parallel to the force that the drive part 42 gives to the braking part 5 to the braking part 5.

  The force applying unit 8 includes an adjusting unit 82. The adjusting unit 82 adjusts the amount of elastic deformation of the elastic unit 81 when the braking unit 5 hits the rotating body 2d. The applied force can be adjusted. Thereby, each adjusting part 82 of the plurality of force applying parts 8 is individually operated, so that the braking part 5 becomes parallel to the rotating body 2d when hitting the rotating body 2d. Therefore, since the braking unit 5 hits the rotating body 2d in parallel, for example, a collision sound when the braking unit 5 hits the rotating body 2d can be reduced.

  Further, in the elevator braking device 3 according to the present embodiment, the elastic portion 81 is configured so that the driving portion 42 is moved when the braking portion 5 moves from the standby position toward the braking position and hits the rotating body 2d. The structure is such that it is elastically deformed so that a resistance against the force applied to the braking unit 5 is applied to the braking unit 5.

  According to such a configuration, the elastic portion 81 is elastically deformed, so that when the braking portion 5 moves from the standby position toward the braking position and hits the rotating body 2d, the force applied to the braking portion 5 by the driving portion 42 is applied. A drag force is applied to the braking unit 5. Thereby, since the collision force when the braking part 5 hits the rotating body 2d is reduced, the collision sound when the braking part 5 hits the rotating body 2d can be reduced.

  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, and the adjustment The portion 82 includes a fixing portion 82a that fixes the first end portion 81a of the elastic portion 81 to the braking portion 5 or the base portion 41a (the base portion 41a in the present embodiment), and the fixing portion 82a indicates that the position of the first end portion 81a of the elastic portion 81 is the brake portion 5 or the base so that the elastic portion 81 is restored without elastic change when the brake portion 5 is located at the standby position. The configuration is such that the portion 41a (in the present embodiment, the base portion 41a) can be changed.

  According to such a configuration, the adjusting portion 82 includes the fixing portion 82a that fixes the first end portion 81a of the elastic portion 81 to the braking portion 5 or the base portion 41a (the base portion 41a in the present embodiment). ing. And the position of the 1st end part 81a of the elastic part 81 is changed with respect to the braking part 5 or the base part 41a (in this embodiment, the base part 41a) by the fixing | fixed part 82a, The braking part 5 Can be restored without being elastically deformed when is positioned at the standby position.

  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.

  The braking device 3 according to the embodiment includes a first force applying portion 7 that applies a force to the braking portion 5 when the braking portion 5 hits the support portion 43, and a force applied to the braking portion 5 when the braking portion 5 hits the rotating body 2d. It is the structure that the 2nd force application part 8 which gives is provided. However, the braking device 3 is not limited to such a configuration. For example, the braking device 3 includes a force applying portion 7 that applies a force to the braking portion 5 when the braking portion 5 hits the support portion 43 and a force applying portion that applies a force to the braking portion 5 when the braking portion 5 hits the rotating body 2d. 8 may be provided with only one of them.

  Further, in the braking device 3 according to the above-described embodiment, the first elastic portion 71 is a drag force in a direction opposite to the force that the drive portion 42 applies to the first braking portion 5 when the first braking portion 5 hits the support portion 43. Is elastically deformed so as to be applied to the first braking portion 5. However, the braking device 3 is not limited to such a configuration. For example, the first elastic portion 71 applies a force in the same direction as the force that the driving unit 42 applies to the first braking unit 5 to the first braking unit 5 when the first braking unit 5 hits the support unit 43. It may be configured to be elastically deformed.

  Further, in the braking device 3 according to the above-described embodiment, the second elastic portion 81 is a drag force in a direction opposite to the force that the drive portion 42 applies to the first braking portion 5 when the first braking portion 5 hits the rotating body 2d. Is elastically deformed so as to be applied to the first braking portion 5. However, the braking device 3 is not limited to such a configuration. For example, the second elastic portion 81 applies a force in the same direction as the force applied to the first braking portion 5 by the driving portion 42 to the first braking portion 5 when the first braking portion 5 hits the rotating body 2d. It may be configured to be elastically deformed.

  In the braking device 3 according to the embodiment, the first adjustment unit 72 fixes the first end 71a of the first elastic unit 71 to the support unit 43, and the position of the first end 71a. It is the structure that can be changed with respect to the support part 43. However, the braking device 3 is not limited to such a configuration. For example, the first adjustment unit 72 fixes the first end 71 a of the first elastic unit 71 to the first braking unit 5, and positions the first end 71 a with respect to the first braking unit 5. It may be configured to be changeable.

  In the braking device 3 according to the above embodiment, the second adjustment portion 82 fixes the first end portion 81a of the second elastic portion 81 to the base portion 41a, and the position of the first end portion 81a. It is the structure that can be changed with respect to the base part 41a. However, the braking device 3 is not limited to such a configuration. For example, the second adjustment unit 82 fixes the first end 81 a of the second elastic unit 81 with respect to the first braking unit 5, and the position of the first end 81 a with respect to the first braking unit 5. It may be configured to be changeable.

  In the braking device 3 according to the embodiment, the first end 71 a of the first elastic portion 71 is fixed to the support portion 43. However, the braking device 3 is not limited to such a configuration. For example, the structure that the 1st end part 71a of the 1st elastic part 71 is being fixed with respect to the machine frame 2c of the hoisting machine 2 may be sufficient.

  As an example, the first end portion 71a of the first elastic portion 71 is fixed to the machine casing 2c of the hoisting machine 2, and the braking portion 5 moves from the braking position toward the standby position, so that the first A configuration in which the elastic deformation amount of the elastic portion 71 is changed may be employed. In short, the first elastic portion 71 applies a force parallel to the force applied to the first braking portion 5 by the driving portion 42 when the braking portion 5 moves from the braking position toward the standby position and hits the support portion 43. What is necessary is just to be fixed so that it may give to the 1st braking part 5. FIG.

  In the braking device 3 according to the above-described embodiment, the first end portion 81a of the second elastic portion 81 is fixed to the base portion 41a. However, the braking device 3 is not limited to such a configuration. For example, the first end portion 81 a of the second elastic portion 81 may be fixed to the machine casing 2 c of the hoisting machine 2.

  As an example, the second end portion 81a of the second elastic portion 81 is fixed to the machine casing 2c of the hoisting machine 2, and the second portion is moved along with the movement of the braking portion 5 from the standby position toward the braking position. A configuration in which the elastic deformation amount of the elastic portion 81 is changed may be employed. In short, the second elastic portion 81 applies a force parallel to the force applied to the first braking portion 5 by the driving portion 42 when the braking portion 5 moves from the standby position toward the braking position and hits the rotating body 2d. What is necessary is just to be fixed so that it may give to the 1st braking part 5. FIG.

  Further, in the braking device 3 according to the above-described embodiment, the first fixing portion 72a includes the first elastic portion 71 so that the first elastic portion 71 does not elastically deform when the first braking portion 5 is located at the braking position. The position of the first end portion 71 a is configured to be changeable with respect to the support portion 43. However, the braking device 3 is not limited to such a configuration. For example, the position of the first end portion 71 a of the first elastic portion 71 can be changed with respect to the support portion 43 so that the first fixing portion 72 a is elastically deformed regardless of the position of the first braking portion 5. It may be configured to be.

  Further, in the braking device 3 according to the above-described embodiment, the second fixing portion 82a has the second elastic portion 81 so that the second elastic portion 81 does not elastically change when the first braking portion 5 is located at the standby position. The first end portion 81a is configured to be changeable with respect to the base portion 41a. However, the braking device 3 is not limited to such a configuration. For example, the position of the first end portion 81a of the second elastic portion 81 relative to the base portion 41a is such that the second elastic portion 81 is elastically changed regardless of the position of the first braking portion 5. It may be configured to be changeable.

  Moreover, in the braking device 3 which concerns on the said embodiment, it is the structure that the elastic parts 71 and 81 are rubber members. However, the braking device 3 is not limited to such a configuration. For example, the elastic portions 71 and 81 may be configured to be spring members such as a string spring, a leaf spring, and a disc spring, for example.

  Moreover, in the braking device 3 according to the above-described embodiment, the elastic portions 71 and 81 are configured such that only the first end portions 71a and 81a are fixed. However, the braking device 3 is not limited to such a configuration. For example, as shown in FIGS. 10 and 11, the elastic portion 71 may be configured such that both the first end portion 71a and the second end portion 71b are fixed.

  Further, in the braking device 3 according to the above-described embodiment, the elastic portions 71 and 81 are configured to apply force to the first braking portion 5 by elastically contracting. However, the braking device 3 is not limited to such a configuration. For example, as shown in FIG. 11, the elastic portion 71 may be configured to apply force to the first braking portion 5 by performing elastic deformation of extension.

  The first end portion 71a of the first elastic portion 71 according to FIG. 10 is fixed to the support portion 43 by a first adjusting portion 72 (first fixing portion 72a), and the second end portion 71b is fixed. The member 73 is fixed to the first braking portion 5 so as not to move. And when the 1st braking part 5 contacts the support part 43, the 1st elastic part 71 is carrying out the elastic deformation of contraction.

  As a result, when the first braking portion 5 hits the support portion 43, the first elastic portion 71 resists the force applied to the first braking portion 5 by the driving portion 42 by the elastic restoring force to be extended (in FIG. 10). (Rightward force) is applied to the first braking unit 5. In addition, the 1st elastic part 71 which concerns on FIG. 10 is used as the spring member (string winding spring).

  Further, the first end portion 71a of the first elastic portion 71 according to FIG. 11 is fixed to the base portion 41a by the first adjusting portion 72 (first fixing portion 72a), and the second end portion 71b is The stationary member 73 is fixed to the first braking portion 5 so as not to move. And when the 1st braking part 5 hits the support part 43, the 1st elastic part 71 is carrying out the elastic deformation of expansion | extension.

  Thus, when the first braking portion 5 hits the support portion 43, the first elastic portion 71 resists the force applied to the first braking portion 5 by the driving portion 42 due to the elastic restoring force to be contracted (in FIG. 11). (Rightward force) is applied to the first braking unit 5. In addition, the 1st elastic part 71 which concerns on FIG. 11 is used as the spring member (string winding spring).

  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. 12, the braking device 3 may be a fixed 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 is not only applied to the force applying units 7 and 8 that apply force to the first braking unit 5 that is movable with respect to the rotating body 2 d and the caliper 4, but also to the rotating body 2 d and the caliper 4. Force applying portions 7 and 8 for applying a force to the movable second braking portion 6. It is also possible to provide only one of the force applying portions 7 and 8 that apply force to the first braking portion 5 and the force applying portions 7 and 8 that apply force to the second braking portion 6. Good.

  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 illustrated in FIG. 13, the rotating body 2d may be configured to rotate integrally with the sheave 2a by being connected to a 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 ... Brake device, 3a ... fixing member, 4 ... caliper, 5 ... first brake part, 6 ... second brake part, 7 ... first force part, 8 ... second force part, 41 ... caliper body part, 41a ... Base part, 42 ... Drive part, 42a ... First drive source, 42b ... Second drive source, 43 ... Support part, 43a ... Support surface, 44 ... Connecting part, 45 ... Mounting mechanism, 45a ... Columnar part, 45b ... Installation , 46 ... holding mechanism, 46 a ... push part, 46 b ... stop part, 51 ... contact surface, 52 ... magnetic part, 52 a ... supported surface, 53 ... contact part, 61 ... contact surface, 71 ... first elastic part 71a ... first end portion, 71b ... second end portion, 72 ... first adjusting portion, 72a ... first fixing portion, 72b ... main body portion, 72c Change part, 72d ... plate, 73 ... fixing member, 81 ... second elastic part, 81a ... first end, 81b ... second end, 82 ... second adjustment part, 82a ... second fixing part, 82b ... main body Part, 82c ... change part, 82d ... 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 comes into contact with 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 plurality of force-applying units that apply a force parallel to the force that the driving unit applies to the braking unit to the braking unit when the braking unit moves from the braking position toward the standby position and hits the support unit; With
The force applying part includes: an elastic part that applies a force to the braking part by elastic deformation; and an adjustment part that is capable of adjusting an amount of elastic deformation of the elastic part when the braking part hits the support part. Elevator braking device provided.   The elastic portion is elastically deformed such that when the braking portion moves from a braking position toward a standby position and hits the support portion, a resistance against a force applied to the braking portion by the driving portion is applied to the braking portion. The elevator braking device according to claim 1. The adjusting unit includes a fixing unit that fixes the first end of the elastic unit to the braking unit or the support unit,
The fixing portion has a position of the first end of the elastic portion relative to the braking portion or the support portion so that the elastic portion is restored without elastic deformation when the braking portion is located at the braking position. The elevator braking device according to claim 2, wherein the braking device is configured to be changeable. 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 plurality of force-applying units that apply a force parallel to the force applied by the drive unit to the brake unit when the brake unit moves from the standby position toward the brake position and hits the rotating body; With
The force applying portion includes: an elastic portion that applies elastic force to the braking portion; and an adjustment portion that can adjust an amount of elastic deformation of the elastic portion when the braking portion hits the rotating body. Elevator braking device provided.   The elastic portion is elastically deformed such that when the braking portion moves from the standby position toward the braking position and hits the rotating body, the driving portion applies a resistance to the force applied to the braking portion by the driving portion. The elevator braking device according to claim 4. 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 adjusting portion includes a fixing portion that fixes the first end portion of the elastic portion to the braking portion or the base portion,
The fixing portion has a position of the first end of the elastic portion relative to the braking portion or the base portion so that the elastic portion is restored without elastic deformation when the braking portion is located at the standby position. The elevator braking device according to claim 5, wherein the braking device is configured to be changeable. 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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