JP6162552B2 - Brake device and elevator device using the brake device - Google Patents

Description

  The present invention relates to a brake device having an electromagnetic magnet for controlling braking of a braking member with respect to a braked body, and an elevator apparatus using the brake device.

  As an electromagnetic magnet used for a brake device, one having a structure having a fixed iron core having an exciting coil, a movable iron core provided opposite to the fixed iron core, and a braking shaft attached to the central portion of the movable iron core is known. ing. At this time, when the operation direction of the brake device (braking direction with respect to the brake target) is the axial direction of the brake shaft, the operation of the brake device may be staggered when the movable iron core rotates in the rotation direction of the brake shaft. In this case, in order to realize reliable braking, it is necessary to limit the displacement of the movable iron core in the rotation direction of the braking shaft.

  Generally, as described in Patent Document 1, the movable iron core is moved in the rotational direction of the brake shaft by coupling a positioning guide pin installed in the fixed iron core and a hole provided in the movable iron core. Structures that limit displacement are known.

  In addition, in a brake device having a similar structure, there is known a structure in which one end of a brake spring is brought into contact with a fixed iron core and the other end is brought into contact with a movable iron core to press the movable iron core during a braking operation. At this time, in order to be able to adjust the brake spring force, a structure capable of changing the compression dimension of the brake spring is desirable.

Japanese Patent Laid-Open No. 2002-5205

  However, since it is necessary to provide a guide pin for positioning in the one described in Patent Document 1 described above, the structure becomes complicated and the number of parts increases in order to make the structure capable of adjusting the compression dimension of the brake spring. There is a problem of doing it.

  The present invention has been made in view of the above-described problems of the prior art, and an object of the present invention is to provide a brake device capable of suppressing the rattling of the brake operation during braking and reducing the number of parts. And providing an elevator apparatus using the brake device.

  In order to achieve the above object, the present invention provides a brake device having an electromagnetic magnet for controlling the movement of a plurality of braking shafts respectively connected to a plurality of braking members arranged opposite to each other with a braked body therebetween. The electromagnetic magnet is connected to one braking shaft of the plurality of braking shafts, and is arranged to be movable along the axial direction of the one braking shaft, and the plurality of braking shafts. An excitation coil that is coupled to the other braking shaft and is disposed opposite to the movable iron core, and that attracts the movable iron core toward the fixed iron core when energized. And a brake shaft insertion hole and a spring insertion hole having an opening on the side facing the movable iron core are formed apart from each other, and the brake shaft insertion hole has an axial direction of the one brake shaft. One end is movably inserted In the spring insertion hole, a brake spring for applying a spring force to the movable iron core is telescopically inserted, and a part of a spring seat housed in the spring insertion hole is fixed to the brake spring, The movable iron core is formed with a spring seat insertion hole having an opening on a surface facing the spring insertion hole of the fixed iron core. The spring seat has one end fixed to the brake spring and the other end is the spring. The brake spring is inserted into the seat insertion hole and engaged with the spring seat insertion hole, and the brake spring applies a spring force acting on the movable iron core in a direction away from the fixed iron core via the spring seat. It is characterized by.

  ADVANTAGE OF THE INVENTION According to this invention, the rattling of the brake operation | movement at the time of braking can be suppressed, and a number of parts can be reduced.

It is a principal part cross-section schematic block diagram which shows the elevator apparatus using the brake device of this invention. It is a front view which shows the winding machine of an elevator apparatus. It is a side view which shows the winding machine of an elevator apparatus. It is a principal part expanded sectional view which shows the structure at the time of open | release of the brake device which concerns on this invention. It is a principal part expanded view which shows the structure at the time of the braking of the brake device which concerns on this invention. It is a principal part expanded sectional view which shows the structure of the electromagnetic magnet used for the brake device which concerns on this invention.

  Embodiments of a brake device according to the present invention and an elevator device using the brake device will be described below with reference to the drawings.

  FIG. 1 is a schematic cross-sectional view of a main part showing an elevator apparatus using the brake device of the present invention. In FIG. 1, an elevator apparatus 300 includes a car 320 that moves up and down in a hoistway 310 formed in a building structure, a counterweight 340 that is connected to the car 320 via a main rope 330, and a hoistway. The hoisting machine 200 is installed in the machine room provided at the top of the hoist 310, and moves up and down the car 320 and the counterweight 340 by winding the main rope 330, and is arranged in the vicinity of the hoisting machine 200. And a curling wheel 350 on which the rope 330 is mounted.

  FIG. 2 is a front view showing the hoisting machine of the elevator apparatus. In FIG. 2, the hoisting machine 200 includes a motor (not shown) that rotates a drive sheave around which the main rope 330 is wound, and a braked body 201 that rotates together with a rotation shaft of the drive sheave and a motor that has the same rotation axis. And a plurality of brake devices 100 that brake the rotation of the braked body 201.

  FIG. 3 is a side view showing the hoisting machine of the elevator apparatus. In FIG. 3, the hoisting machine 200 is provided with a motor 212 that rotates a drive sheave 210 around which the main rope 330 is wound. The motor 212 has a rotating shaft (not shown) connected to a rotating shaft (not shown) of the braked body 201 via a rotating shaft (not shown) of the drive sheave 210. For this reason, the drive sheave 210 and the braked body 201 rotate together by the rotation of the motor 212. At this time, braking against rotation of the braked body 201 is controlled by each brake device 100.

  FIG. 4 is an enlarged cross-sectional view of the main part showing the configuration of the brake device according to the present invention when it is opened. In FIG. 4, the brake device 100 includes braking members 101 a and 101 b for applying a braking force to the braked body 201, and a braking member 101 a along a width direction that intersects the longitudinal direction of the braked body 201. , 101b. The electromagnetic magnet 107 includes a movable iron core 103, a fixed iron core 104, a brake spring 105, and an exciting coil 106.

  The braking members 101a and 101b are disposed to face each other with the braked body 201 in between, and in the space portion 108a of the caliper 108 fixed to the base 120 serving as the brake device main body, It is arranged to be movable along the width direction. The braked body 201 is formed of, for example, a rotating disk, and a part (outer peripheral portion) of the braked body 201 is rotatably accommodated in the space portion 108b of the caliper 108 and the space portion 120a of the base 120.

  The braking member 101a is configured in a disk shape, for example, and is mechanically coupled to the braking shaft 102a. The braking shaft 102 a is disposed along the width direction of the brake target 201 and is movable along the width direction of the brake target 201 into the through hole 120 b of the base 120 and the brake shaft insertion hole 104 a of the fixed iron core 104. Be placed. At this time, the movable iron core 103 is fixed to the substantially outer peripheral surface of the intermediate portion of the braking shaft 102a. That is, the movable iron core 103 is arranged so as to be movable along the width direction of the braked body 201 together with the brake shaft 102a.

  The braking member 101b is configured in a disk shape, for example, and is mechanically coupled to the braking shaft 102b. The braking shaft 102 b is coaxial with the braking shaft 102 a, is disposed along the width direction of the braked body 201, and is connected to the fixed iron core 104. At this time, one end of the braking shaft 102 b in the axial direction is fixed to the caliper 108 with a bolt 122. Here, since the fixed iron core 104 is fixed to the base 120 serving as a brake device main body, the braking shaft 102b is connected to the fixed iron core 104 via the caliper 108 and the base 120.

  The fixed iron core 104 of the electromagnetic magnet 107 houses an exciting coil 106 that applies electromagnetic force to the movable iron core 103 and a brake spring 105 that applies spring force to the movable iron core 103, and is connected to the base 120 by a bolt 123. As shown in FIG. 6, the brake spring 105 is housed in a spring insertion hole 104 b formed with an opening facing the movable iron core 103, and moves away from the fixed iron core 104 to the movable iron core 103 via the spring seat 111. A spring force (elastic force) is applied.

  Here, when the exciting coil 106 is energized as shown in FIG. 4 and when the braking members 101 a and 101 b are opened, the movable iron core 103 resists the spring force of the brake spring 105 by the electromagnetic force of the exciting coil 106. As a result, the brake member 101a moves to the fixed iron core 104 side together with the brake shaft 102a. On the other hand, when the reaction force of the brake spring 105 acts on the caliper 108 from the bolt 123 side of the fixed iron core 104, the braking shaft 102b moves in a direction away from the braked body 201 together with the braking member 101b. Thereby, the braking member 101a and the braking member 101b are separated from the braked body 201, respectively, and the braked body 201 is released from the braking member 101a and the braking member 101b.

  FIG. 5 is an enlarged cross-sectional view of a main part showing the configuration of the brake device according to the present invention during braking. In FIG. 5, when the excitation coil 106 is not energized and when braking is performed by the braking members 101 a and 101 b, the energization to the excitation coil 106 is interrupted, and the suction of the fixed core 104 to the movable core 103 is released. As a result, the spring force of the brake spring 105 acts on the movable iron core 103 in the direction away from the fixed iron core 104, the movable iron core 103 moves away from the fixed iron core 104, and the braking member 101a together with the brake shaft 102a in the braking direction. Then, it moves toward the braked body 201, and its tip side comes into contact with the braked body 201.

  On the other hand, when the reaction force of the brake spring 105 acts on the caliper 108 via the base 120, the braking shaft 102 b moves together with the braking member 101 b in the direction approaching the braked body 201, and the tip side contacts the braked body 201. To do. As a result, both ends in the width direction of the brake target 201 are gripped by the brake members 101a and 101b, and the braking force due to the spring force of the brake spring 105 is applied to the brake target 201 from the brake members 101a and 101b. And the rotation of the braked body 201 is stopped. At this time, the brake device 100 is in a braking state, and the car 320 and the counterweight 340 are stopped.

  And the brake device 100 of a present Example is devised for adjusting the compression dimension of the brake spring 105 so that the spring force of the brake spring 105 mentioned later can be adjusted.

  FIG. 6 is an enlarged cross-sectional view of the main part showing the configuration of the electromagnetic magnet used in the brake device according to the present invention. In FIG. 6, the brake spring 105 is configured, for example, in a coil shape, and is inserted into a spring insertion hole 104 b formed in the fixed iron core 104 in parallel with the brake shaft 102 a so as to expand and contract. In the movable core 103, a spring seat insertion hole 103a having an opening on the side facing the spring insertion hole 104b of the fixed core 104, and a back side and a spring seat inserted on the back side of the surface facing the fixed core 104 are inserted. A threaded portion 103b connecting the hole 103a is formed in parallel with the braking shaft 102a. A holding jig 112 is inserted into the spring seat insertion hole 103a and the threaded portion 103b from the back side of the movable iron core 103, and a part thereof meshes with the threaded portion.

  The spring insertion hole 104 b is formed in a circular shape so as to face the spring seat insertion hole 103 a formed in the movable iron core 103, and is formed in parallel with the braking shaft insertion hole 104 a of the fixed iron core 104. A part of a spring seat 111 formed in a columnar shape is inserted into the spring insertion hole 104b. The spring seat 111 is configured such that the outer dimension is smaller than the inner diameter of the brake spring 105 and smaller than the diameter of the spring seat insertion hole 103a formed in the movable iron core 103, and one end side in the axial direction (longitudinal direction) The other end side in the axial direction is inserted into the spring seat insertion hole 103a of the movable core 103 and is engaged with the spring seat insertion hole 103a.

  The holding jig 112 is composed of, for example, a push bolt, and a screw part formed on the outer peripheral side thereof is fixed to the movable iron core 103 in a state where the screw part 103b is engaged with the screw part 103b of the movable iron core 103. The spring seat 111 is in contact with one end (tip) 111a. At this time, the pressing jig 112 is moved toward the pressing jig 112 along the axial direction (longitudinal direction) of the pressing jig 112 when the tip of the axial direction contacts one end of the spring seat 111. Can be prevented. In this case, the brake spring 105 applies a spring force acting in the direction away from the fixed iron core 104 to the movable iron core 103 via the spring seat 111 engaged with the spring seat insertion hole 103a.

  When the rotational position of the pressing jig 112 is fixed in a state where the axial tip of the pressing jig 112 is in contact with one end (tip) 111 a of the spring seat 111, the spring seat depends on the rotational position of the pressing jig 112. The position of the spring seat 111 in the spring seat insertion hole 103a is determined, and the spring force of the brake spring 105 is determined by the position of the spring seat 111 in the spring seat insertion hole 103a.

  At this time, for example, when the excitation coil 106 is not energized, the rotation position of the holding jig 112 is released, the holding jig 112 is rotated from the original position to the right side, and the tip end side in the axial direction is moved to the spring seat. If it is moved in a direction approaching the brake spring 105 while being in contact with the spring 111, the spring force of the brake spring 105 becomes larger than when the presser jig 112 is in its original position. When the 112 is rotated to the left from the original position and moved in a direction away from the brake spring 105 in a state where the axial front end side is in contact with the spring seat 111, the holding jig 112 is in the original position. The spring force of the brake spring 105 is smaller than when That is, by rotating the holding jig 112 in a state where the tip end side in the axial direction is in contact with the spring seat 111, the spring force of the brake spring 105, that is, the compression dimension of the brake spring 105 (the brake spring 105 at the time of compression). The longitudinal dimension) can be adjusted.

  Further, the spring seat 111 is formed of, for example, a cylindrical shaft-shaped member, and one end side in the axial direction is inserted and fixed in the brake spring 105, and the other end side in the axial direction is a spring of the movable iron core 103. It is inserted into the seat insertion hole 103a, is engaged with the spring seat insertion hole 103a, and is in contact with the axial front end side of the holding jig 112. That is, the spring seat 111 is always inserted and fixed in the brake spring 105 at one end side in the axial direction even when the exciting coil 106 is energized and de-energized, and the other end side in the axial direction is the spring seat insertion hole. It engages with 103a and is connected to the movable iron core 103. For this reason, when the movable iron core 103 moves integrally with the brake shaft 102 a, even if a rotational force is transmitted from the brake shaft 102 a to the movable iron core 103, the spring seat 111 is connected to the movable iron core 103. Therefore, it is possible to suppress the movable iron core 103 from rotating together with the brake shaft 102a, and as a result, it is possible to suppress the rattling of the brake device 100 during braking.

  According to this embodiment, the spring seat 111 that functions as a component for guiding the movement of the movable iron core 103 and the pressing jig 112 that is a component for adjusting the compression dimension of the brake spring 105 are integrally disposed. Since the spring seat 111 is connected to the brake spring 105, the rattling of the brake operation during braking can be suppressed, and the number of parts can be reduced as compared with the conventional structure. For this reason, it is possible to suppress the movable iron core 103 from rotating together with the brake shaft 102a without using a guide pin for positioning. As a result, it is possible to suppress the rattling of the brake device 100 during braking. Thus, reliable braking can be realized. At this time, the holding jig 112, the spring seat 111, and the brake spring 105 are arranged coaxially, whereby the movable iron core 103 can be more reliably suppressed from rotating together with the brake shaft 102a, and the spring. The seat 111 can guide the movement of the movable iron core 103 more smoothly.

  In addition, according to the present embodiment, the spring force of the brake spring 105, that is, the compression dimension of the brake spring 105 is reduced by rotating the holding jig 112 in a state where the axial front end side is in contact with the spring seat 111. Can be adjusted. Further, the number of parts can be reduced as compared with the conventional structure.

  The present invention is not limited to the above-described embodiments, and includes various conceivable forms without departing from the gist of the present invention described in the claims. For example, in the present embodiment, the contact side of the spring seat 111 with the pressing jig 112 is smaller than the diameter of the brake spring 105 and has a structure that enters the spring seat insertion hole 103a provided in the movable iron core 103. The shape of the contact side of the seat 111 with the holding jig 112 can be freely changed in accordance with the shape of the spring seat insertion hole 103 a of the movable iron core 103.

  For example, when the spring seat insertion hole 103a of the movable iron core 103 is smaller than the outer diameter of the spring seat 111, the contact side of the spring seat 111 with the pressing jig 112 is formed as a convex portion, and the convex portion of the spring seat 111 is formed. Can be inserted into the spring seat insertion hole 103 a of the movable iron core 103. In this case, the spring seat 111 is composed of a shaft-shaped member (columnar member) formed by adjoining a cylindrical small-diameter portion and a large-diameter portion, and one end side of the large-diameter portion of the shaft-shaped member is braked. It can be set as the structure where it fixes to the spring 105 and the one end side of the small diameter part of a shaft-shaped member engages with the spring seat insertion hole 103a. In the present embodiment, the example in which the braking member 101a is configured in a disk shape has been described, but the braking member 101a may be configured in a square plate shape.

  Further, a part of the configuration of one embodiment can be replaced with the configuration of another embodiment, and the configuration of another embodiment can be added to the configuration of one embodiment. Further, it is possible to add, delete, and replace other configurations for a part of the configuration of each embodiment. In addition, the brake device 100 of the present invention is not limited to three, and may be one or more, and is not limited to an elevator device in which a hoisting machine is disposed in the machine room at the top of the hoistway 310. The present invention can also be applied to an elevator apparatus in which a hoisting machine is disposed in a hoistway.

  DESCRIPTION OF SYMBOLS 100 Brake apparatus, 101a, 101b Braking member, 102a, 102b Braking shaft, 103 Movable iron core, 104 Fixed iron core, 105 Brake spring, 106 Excitation coil, 107 Electromagnetic magnet, 108 Caliper, 111 Spring seat, 112 Holding jig, 200 Hoisting Machine, 201 braked body, 300 elevator device, 310 hoistway, 320 car, 330 main rope, 340 counterweight, 350 warping vehicle.

Claims (2)

In a brake device having an electromagnetic magnet for controlling movement of a plurality of braking shafts respectively connected to a plurality of braking members arranged opposite to each other with a braked body therebetween,
The electromagnetic magnet is
A movable iron core connected to one of the plurality of braking shafts and arranged to be movable along the axial direction of the one braking shaft;
A fixed iron core connected to the other brake shaft among the plurality of brake shafts and disposed opposite to the movable iron core;
In the fixed iron core,
An exciting coil for attracting the movable iron core toward the fixed iron core when energized is installed, and a braking shaft insertion hole and a spring insertion hole having an opening on the side facing the movable iron core are formed apart from each other, and the braking One end of the one braking shaft in the axial direction is movably inserted into the shaft insertion hole, and a brake spring for applying a spring force to the movable iron core is inserted into the spring insertion hole in a telescopic manner, A part of a spring seat housed in the spring insertion hole is fixed to the brake spring,
In the movable iron core,
A spring seat insertion hole having an opening on the surface facing the spring insertion hole of the fixed iron core is formed, and the back surface side serving as a rear surface with respect to the surface facing the fixed iron core is connected to the spring seat insertion hole. A threaded portion is formed, and the spring seat insertion hole and the threaded portion are inserted from the back side of the movable iron core, and a holding jig is inserted into which the part meshes with the threaded portion,
The spring seat is composed of a cylindrical shaft-shaped member, and one end side in the axial direction of the shaft-shaped member is inserted and fixed in the brake spring , and the other end side in the axial direction of the shaft-shaped member is Inserted into the spring seat insertion hole and engaged with the spring seat insertion hole,
The holding jig has a distal end side farthest from the back side of the movable iron core inserted into the spring seat insertion hole and is in contact with the other end of the spring seat in the spring seat insertion hole,
When the pressing jig rotates in a state where the tip side of the pressing jig is in contact with the other end of the spring seat, the compression dimension of the brake spring is adjusted according to the rotated position of the pressing jig,
The brake device is characterized in that a spring force acting in a direction away from the fixed iron core is applied to the movable iron core via the spring seat. A car and a counterweight that moves up and down in the hoistway, a main rope that holds the car and the counterweight, a hoisting machine that winds the main rope and lifts the car and the counterweight, and the hoisting machine In an elevator apparatus comprising a brake device that presses and brakes a plurality of braking members against a braked body that rotates in synchronization with the rotation of
The brake device is
Having an electromagnetic magnet for controlling the movement of a plurality of braking shafts respectively connected to a plurality of braking members arranged opposite to each other with a braked body therebetween,
The electromagnetic magnet is
A movable iron core connected to one of the plurality of braking shafts and arranged to be movable along the axial direction of the one braking shaft;
A fixed iron core connected to the other brake shaft among the plurality of brake shafts and disposed opposite to the movable iron core;
In the fixed iron core,
An exciting coil for attracting the movable iron core toward the fixed iron core when energized is installed, and a braking shaft insertion hole and a spring insertion hole having an opening on the side facing the movable iron core are formed apart from each other, and the braking One end of the one braking shaft in the axial direction is movably inserted into the shaft insertion hole, and a brake spring for applying a spring force to the movable iron core is inserted into the spring insertion hole in a telescopic manner, A part of a spring seat housed in the spring insertion hole is fixed to the brake spring,
In the movable iron core,
A spring seat insertion hole having an opening on the surface facing the spring insertion hole of the fixed iron core is formed, and the back surface side serving as a rear surface with respect to the surface facing the fixed iron core is connected to the spring seat insertion hole. A threaded portion is formed, and the spring seat insertion hole and the threaded portion are inserted from the back side of the movable iron core, and a holding jig is inserted into which the part meshes with the threaded portion,
The spring seat is composed of a cylindrical shaft-shaped member, and one end side in the axial direction of the shaft-shaped member is inserted and fixed in the brake spring , and the other end side in the axial direction of the shaft-shaped member is Inserted into the spring seat insertion hole and engaged with the spring seat insertion hole,
The holding jig has a distal end side farthest from the back side of the movable iron core inserted into the spring seat insertion hole and is in contact with the other end of the spring seat in the spring seat insertion hole,
When the pressing jig rotates in a state where the tip side of the pressing jig is in contact with the other end of the spring seat, the compression dimension of the brake spring is adjusted according to the rotated position of the pressing jig,
The said brake spring is an elevator apparatus provided with the spring force which acts on the said movable iron core in the direction away from the said fixed iron core via the said spring seat.

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