WO2019220550A1 - Dispositif de frein pour ascenseur - Google Patents

Dispositif de frein pour ascenseur Download PDF

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Publication number
WO2019220550A1
WO2019220550A1 PCT/JP2018/018801 JP2018018801W WO2019220550A1 WO 2019220550 A1 WO2019220550 A1 WO 2019220550A1 JP 2018018801 W JP2018018801 W JP 2018018801W WO 2019220550 A1 WO2019220550 A1 WO 2019220550A1
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WO
WIPO (PCT)
Prior art keywords
plunger
inclined surfaces
brake device
bush
axial direction
Prior art date
Application number
PCT/JP2018/018801
Other languages
English (en)
Japanese (ja)
Inventor
和雄 淺野
Original Assignee
三菱電機株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 三菱電機株式会社 filed Critical 三菱電機株式会社
Priority to PCT/JP2018/018801 priority Critical patent/WO2019220550A1/fr
Publication of WO2019220550A1 publication Critical patent/WO2019220550A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/08—Driving gear ; Details thereof, e.g. seals with hoisting rope or cable operated by frictional engagement with a winding drum or sheave
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D49/00—Brakes with a braking member co-operating with the periphery of a drum, wheel-rim, or the like
    • F16D49/16—Brakes with two brake-blocks

Definitions

  • the present invention relates to an elevator brake device.
  • Patent Document 1 describes an example of an elevator brake device.
  • the brake device includes a bush and a plunger.
  • a bush is provided in the perimeter of the outer peripheral side of a plunger.
  • the plunger is guided by the bush and presses the lever to press the lining against the brake drum.
  • the present invention has been made to solve such problems.
  • the objective of this invention is providing the brake device of the elevator which a bush is biased and is hard to wear.
  • a brake device releases a car ascending / descending by moving to a first position in the axial direction, and moves to a second position in the axial direction when braking the car ascending / descending, and an inner surface is a plunger.
  • the plunger releases the elevator from moving up and down by moving to the first axial position.
  • the plunger moves to the second axial position during braking of the car.
  • the bush guides the axial movement of the plunger.
  • the rotation mechanism rotates the plunger in the forward direction when the plunger moves between the first position and the second position. Thereby, the bush of a brake device becomes difficult to wear unevenly.
  • FIG. 1 is a configuration diagram of an elevator according to Embodiment 1.
  • FIG. 1 is a front view of a brake device according to Embodiment 1.
  • FIG. 1 is a front view of a brake device according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. 3 is a front view of an operation unit according to Embodiment 1.
  • FIG. FIG. 3 is a top view of the main part of the brake device according to the first embodiment.
  • FIG. 3 is a front view of a main part of the brake device according to the first embodiment.
  • FIG. 1 is a configuration diagram of an elevator according to the first embodiment.
  • the building where the elevator 1 is provided has a plurality of floors.
  • the hoistway 2 penetrates each floor of the building.
  • Each of the multiple halls is provided on each floor of the building.
  • Each of the plurality of halls faces the hoistway 2.
  • the machine room 3 is provided in the upper part of the hoistway 2.
  • the elevator 1 includes a car 4, a weight 5, a hoisting machine 6, a deflector 7, a main rope 8, and a brake device 9.
  • the car 4 is provided inside the hoistway 2 so that it can be raised and lowered along a guide rail (not shown).
  • the weight 5 is provided inside the hoistway 2 so that it can be raised and lowered along a guide rail (not shown).
  • the hoisting machine 6 is provided in the machine room 3.
  • the hoisting machine 6 includes a motor and a sheave.
  • the motor of the hoisting machine 6 is a device that rotationally drives the sheave of the hoisting machine 6.
  • the deflecting wheel 7 is provided in the machine room 3.
  • the deflecting wheel 7 is a sheave.
  • the main rope 8 is wound around the sheave of the hoisting machine 6.
  • the main rope 8 is wound around the baffle wheel 7.
  • One end of the main rope 8 is held by the car 4.
  • the other end of the main rope 8 is held by the weight 5.
  • the brake device 9 is a device that brakes the raising and lowering of the car 4.
  • the main rope 8 is driven by the motor of the hoisting machine 6 and moves.
  • the brake device 9 releases the rotation of the sheave of the hoisting machine 6.
  • the car 4 moves up and down following the movement of the main rope 8.
  • the weight 5 moves up and down following the movement of the main rope 8.
  • the car 4 stops on the floor where the landing is provided.
  • the brake device 9 brakes the rotation of the sheave of the hoisting machine 6. Thereby, the raising / lowering of the cage
  • a user of the elevator 1 gets on the car 4 from the landing. Alternatively, the user of the elevator 1 gets off from the car 4 to the landing.
  • FIG. 2 is a front view of the brake device according to the first embodiment.
  • FIG. 2 shows a state in which the brake device 9 suppresses the rotation of the sheave of the hoisting machine 6.
  • the upward direction on the paper is the upward direction of the brake device 9.
  • the right direction of the drawing is the right direction of the brake device 9.
  • the brake device 9 includes a brake drum 10, a pair of arms 11, a pair of linings 12, a pair of springs 13, a pair of levers 14, and an operating unit 15.
  • the brake drum 10 is a member that rotates in synchronization with the sheave of the hoisting machine 6.
  • the brake drum 10 has a disk shape.
  • One of the pair of arms 11 is provided on the right side of the brake drum 10. The other of the pair of arms 11 is provided on the left side of the brake drum 10.
  • Each of the pair of arms 11 includes an arm pin 16.
  • the arm pin 16 is provided at the lower end of the arm 11.
  • Each of the pair of arms 11 is provided so that it can be opened and closed with respect to the brake drum 10 by rotating around the arm pin 16.
  • One of the pair of linings 12 is provided on the right arm 11.
  • the other of the pair of linings 12 is provided on the left arm 11.
  • Each of the pair of linings 12 faces the outer peripheral surface of the brake drum 10.
  • Each of the pair of springs 13 is provided at the end of each of the pair of arms 11 opposite to the arm pin 16. One of the pair of springs 13 is provided to be compressed so as to push the right arm 11 toward the brake drum 10. The other of the pair of springs 13 is provided by being compressed so as to push the left arm 11 toward the brake drum 10.
  • One of the pair of levers 14 is provided on the right side of the brake device 9.
  • the other of the pair of levers 14 is provided on the left side of the brake device 9.
  • Each of the pair of levers 14 is provided above the brake drum 10.
  • Each of the pair of levers 14 includes a lever pin 17.
  • the lever pin 17 of the right lever 14 is provided at the right end of the lever 14.
  • the lever pin 17 of the left lever 14 is provided at the left end of the lever 14.
  • Each of the pair of levers 14 is provided to be rotatable about a lever pin 17 as an axis.
  • the right lever 14 contacts the arm 11 so as to open the right arm 11 to the right by rotation.
  • the left lever 14 contacts the arm 11 so as to open the left arm 11 to the left by rotation.
  • the operating unit 15 is provided on the upper part of the brake device 9.
  • the operating unit 15 includes a plunger 18, a fixed iron core 19, an upper bush 20, a lower bush 21, an excitation coil 22, a case 23, and a rotation mechanism 24.
  • the plunger 18 has a shape to be rotated with the vertical direction as the axial direction.
  • the lower part of the plunger 18 is thinner than the upper part of the plunger 18.
  • the plunger 18 includes a movable iron core at the top.
  • the lower part of the plunger 18 is in contact with the end of each of the pair of levers 14 opposite to the lever pin 17.
  • the plunger 18 is located at the upper position.
  • the upper position is an example of the second position.
  • the plunger 18 is provided so as to be movable to a lower position.
  • the lower position is a position below the upper position in the axial direction.
  • the lower position is an example of the first position.
  • the fixed iron core 19 has a cylindrical shape.
  • the central axis of the fixed iron core 19 is provided on the same axis as the plunger 18.
  • the fixed iron core 19 is provided on the outer peripheral side of the lower portion of the plunger 18.
  • the upper bush 20 has a cylindrical shape.
  • the central axis of the upper bush 20 is provided on the same axis as the plunger 18.
  • the upper bush 20 is provided on the outer peripheral side of the upper portion of the plunger 18 so as to guide the movement of the plunger 18 in the axial direction.
  • the inner surface of the upper bush 20 contacts the outer surface of the plunger 18.
  • the lower bush 21 has a cylindrical shape.
  • the central axis of the lower bush 21 is provided on the same axis as the plunger 18.
  • the lower bush 21 is provided on the outer peripheral side of the lower portion of the plunger 18 so that the axial movement of the plunger 18 can be guided.
  • the inner surface of the lower bush 21 is in contact with the outer surface of the plunger 18.
  • the exciting coil 22 is a device that generates a magnetic field when energized.
  • the exciting coil 22 has a cylindrical shape.
  • the central axis of the exciting coil 22 is provided on the same axis as the plunger 18.
  • the exciting coil 22 is provided on the outer peripheral side of the fixed iron core 19.
  • the exciting coil 22 is provided on the outer peripheral side of the upper bush 20.
  • the exciting coil 22 is provided on the outer peripheral side of the lower bush 21.
  • the case 23 has a shape to be rotated with the vertical direction as the axial direction.
  • the case 23 has an opening at the upper end.
  • the central axis of the case 23 is provided on the same axis as the plunger 18.
  • the case 23 accommodates the plunger 18, the fixed iron core 19, the upper bush 20, the lower bush 21, and the exciting coil 22.
  • the rotation mechanism 24 is provided at the upper end outside the case 23.
  • the rotation mechanism 24 includes a turntable 25 and a fixed body 26.
  • the forward direction is the counterclockwise direction of rotation when viewed from above.
  • the turntable 25 has a disk shape.
  • the turntable 25 is connected to the upper end of the plunger 18.
  • the central axis of the turntable 25 is provided coaxially with the central axis of the plunger 18.
  • the turntable 25 is an example of a rotating body.
  • the turntable 25 includes a plurality of upper contact portions 27a and a plurality of lower contact portions 27b.
  • the plurality of upper contact portions 27 a are provided on the peripheral edge portion of the upper surface of the rotating disk 25.
  • the plurality of upper contact portions 27a are arranged in an annular shape at a constant pitch.
  • the whole of the plurality of upper contact portions 27a has a sawtooth shape.
  • Each of the plurality of upper contact portions 27a is an example of a second contact portion.
  • Each of the plurality of upper contact portions 27a has an upper sliding surface 28a.
  • the normal line of the upper sliding surface 28 a is inclined in the reverse direction of the forward direction in the rotation direction of the rotating disk 25.
  • the plurality of lower contact portions 27b are provided on the peripheral edge portion of the lower surface of the turntable 25.
  • the plurality of lower contact portions 27b are arranged in an annular shape at a constant pitch.
  • the whole of the plurality of lower contact portions 27b has a sawtooth shape.
  • the pitch at which the plurality of lower contact portions 27b are arranged is equal to the pitch at which the plurality of upper contact portions 27a are arranged.
  • Each of the plurality of lower contact portions 27b is an example of a first contact portion.
  • Each of the plurality of lower contact portions 27b has a lower sliding surface 28b.
  • the normal line of the lower sliding surface 28 b is inclined in the reverse direction of the forward direction in the rotation direction of the rotating disk 25.
  • Each of the plurality of upper contact portions 27a overlaps one of the plurality of lower contact portions 27b on the projection plane perpendicular to the axial direction.
  • Each of the plurality of lower contact portions 27b overlaps one of the plurality of upper contact portions 27a on the projection plane perpendicular to the axial direction.
  • the plurality of lower contact portions 27b are plane-symmetric with respect to the plurality of upper contact portions 27a with respect to a plane perpendicular to the axial direction.
  • the fixed body 26 includes an upper fixed platen 29a and a lower fixed platen 29b.
  • the fixed body 26 is a part that rotates the plunger 18 in the forward direction via the turntable 25.
  • the upper fixed platen 29a has a disk shape.
  • the upper fixed platen 29a is provided above the rotating platen 25.
  • the upper fixed platen 29 a faces the upper surface of the rotating plate 25.
  • the central axis of the upper fixed plate 29 a is provided coaxially with the central axis of the plunger 18.
  • the upper fixed plate 29 a is fixed to the case 23.
  • the upper fixed platen 29a is an example of a second fixed body.
  • the upper fixed platen 29a has a plurality of upper inclined surfaces 30a.
  • the plurality of upper inclined surfaces 30a are provided on the peripheral edge of the lower surface of the upper fixed platen 29a.
  • the plurality of upper inclined surfaces 30a are arranged in an annular shape at a constant pitch.
  • the pitch at which the plurality of upper inclined surfaces 30a are arranged is equal to the pitch at which the plurality of upper contact portions 27a are arranged.
  • Each normal line of the plurality of upper inclined surfaces 30 a is inclined in the forward direction in the rotation direction of the turntable 25.
  • Each of the plurality of upper inclined surfaces 30a is parallel to one of the upper sliding surfaces 28a of the plurality of upper contact portions 27a.
  • Each of the plurality of upper inclined surfaces 30a is an example of a second inclined surface.
  • the lower fixed plate 29b has a disk shape.
  • the lower fixed platen 29 b is provided below the rotary platen 25.
  • the lower fixed platen 29 b faces the lower surface of the rotating plate 25.
  • the central axis of the lower fixed plate 29 b is provided coaxially with the central axis of the plunger 18.
  • the lower fixed platen 29 b is fixed to the case 23.
  • the lower fixed platen 29b is an example of a first fixed body.
  • the lower fixed platen 29b has a plurality of lower inclined surfaces 30b.
  • the plurality of lower inclined surfaces 30b are provided on the periphery of the upper surface of the lower fixed platen 29b.
  • the plurality of lower inclined surfaces 30b are arranged in an annular shape at a constant pitch.
  • the pitch at which the plurality of lower inclined surfaces 30b are arranged is equal to the pitch at which the plurality of lower contact portions 27b are arranged.
  • Each normal line of the plurality of lower inclined surfaces 30 b is inclined in the forward direction in the rotation direction of the rotating disk 25.
  • Each of the plurality of lower inclined surfaces 30b is parallel to one of the lower sliding surfaces 28b of the plurality of lower contact portions 27b.
  • Each of the plurality of lower inclined surfaces 30b is an example of a first inclined surface.
  • Each of the plurality of upper inclined surfaces 30a is shifted in the forward direction from one of the plurality of lower inclined surfaces 30b on the projection plane perpendicular to the axial direction by a half of the pitch in which the plurality of upper inclined surfaces 30a are arranged.
  • Each of the plurality of lower inclined surfaces 30b is shifted in the forward direction from one of the plurality of upper inclined surfaces 30a on the projection plane perpendicular to the axial direction by a half of the pitch in which the plurality of lower inclined surfaces 30b are arranged.
  • the plurality of lower inclined surfaces 30b overlap the plurality of upper inclined surfaces 30a and a plurality of planes that are plane-symmetric with respect to a plane perpendicular to the axial direction, rotated about half the pitch around the axial direction.
  • the axial gap between the upper fixed platen 29a and the lower fixed platen 29b is such that when the plunger 18 is located at the upper position, the lowermost part of the rotating plate 25 passes through the uppermost part of the lower fixed platen 29b. It is provided so that it exists in the upper part.
  • the gap is provided such that when the plunger 18 is located at the lower position, the uppermost part of the rotating plate 25 is below the horizontal plane passing through the lowermost part of the upper fixed platen 29a.
  • the distance between the horizontal plane passing through the lowermost part of the upper fixed platen 29a and the horizontal plane passing through the uppermost part of the lower fixed platen 29b is set wider than the thickness from the uppermost part of the rotating platen 25 to the lowest part.
  • the distance may be a distance obtained by subtracting a distance less than half of the height of the plurality of upper contact portions 27a or the plurality of lower contact portions 27b from the thickness from the top to the bottom of the turntable 25. .
  • the right spring 13 pushes the right arm 11 toward the left side.
  • the right lining 12 is pressed against the right outer peripheral surface of the brake drum 10 by the right arm 11.
  • the left spring 13 pushes the left arm 11 toward the right side.
  • the left lining 12 is pressed against the left outer peripheral surface of the brake drum 10 by the left arm 11.
  • Each of the pair of linings 12 suppresses the rotation of the brake drum 10 by friction. Thereby, rotation of the sheave of the hoisting machine 6 that rotates in synchronization with the brake drum 10 is suppressed.
  • the exciting coil 22 is not energized.
  • the right arm 11 pushes the right lever 14 from the right side.
  • the left end of the right lever 14 goes up.
  • the left arm 11 pushes the left lever 14 from the left side.
  • the right end of the left lever 14 goes up.
  • the plunger 18 is lifted by the pair of levers 14.
  • Each of the upper bush 20 and the lower bush 21 guides the plunger 18.
  • the plunger 18 moves to the upper position.
  • the turntable 25 follows the plunger 18 and moves upward.
  • FIG. 3 is a front view of the brake device according to the first embodiment.
  • the upward direction on the paper is the upward direction of the brake device 9.
  • the right direction of the drawing is the right direction of the brake device 9.
  • the exciting coil 22 When the brake device 9 is released, the exciting coil 22 is energized.
  • the exciting coil 22 generates a magnetic field.
  • the magnetic field generated by the exciting coil 22 generates an attractive force between the movable iron core of the plunger 18 and the fixed iron core 19.
  • the plunger 18 moves downward by the attractive force generated between the movable iron core and the fixed iron core 19.
  • Each of the upper bush 20 and the lower bush 21 guides the plunger 18.
  • the plunger 18 moves to the lower position.
  • the turntable 25 follows the plunger 18 and moves downward.
  • the upper bush 20 guides the movement of the plunger 18 in the axial direction.
  • the lower bush 21 guides the movement of the plunger 18 in the axial direction.
  • the lower end of the plunger 18 pushes the opposite end of each lever pin 17 of the pair of levers 14 downward.
  • the right lever 14 pushes the right arm 11 to the right while resisting the elastic force of the right spring 13.
  • the left lever 14 pushes the left arm 11 to the left while resisting the elastic force of the left spring 13.
  • Each of the pair of linings 12 is separated from the outer peripheral surface of the brake drum 10. At this time, the rotation of the brake drum 10 is not suppressed.
  • the rotation of the sheave of the hoisting machine 6 that rotates in synchronization with the brake drum 10 is not suppressed.
  • FIGS. 4 to 8. are front views of the operation unit according to the first embodiment.
  • a marker M indicating the rotational position of the turntable 25 is shown.
  • the upward direction in the drawing is the upward direction of the brake device 9.
  • the right direction in the drawing is the right direction of the brake device 9.
  • FIG. 4 the state at the time of braking is shown.
  • the plunger 18 is located at the upper position in the axial direction.
  • Each of the plurality of upper contact portions 27a is in contact with each of the plurality of upper inclined surfaces 30a.
  • the lowermost portion of each of the plurality of lower contact portions 27b is shifted in the forward direction from the lowermost portion of each of the plurality of lower inclined surfaces 30b by a length A that is half the pitch of the plurality of lower inclined surfaces 30b.
  • Each of the plurality of lower contact portions 27b is separated from any of the plurality of lower inclined surfaces 30b.
  • the coaxiality may vary due to manufacturing errors of the plunger 18 or the like.
  • the radial gap between the plunger 18 and the inner surface of the case 23 is biased. That is, the width of the gap B may be different from the width of the gap C.
  • FIG. 5 the state of switching from braking to release is shown.
  • the plunger 18 moves downward from the upper position in the axial direction.
  • the turntable 25 follows the plunger 18 and moves downward.
  • Each of the plurality of upper contact portions 27a is separated from the upper inclined surface 30a that has been in contact.
  • the plunger 18 moves to the lower position in the axial direction.
  • the turntable 25 follows the plunger 18 and moves downward.
  • Each of the plurality of upper contact portions 27a is separated from any of the plurality of upper inclined surfaces 30a.
  • Each of the plurality of lower contact portions 27b moves downward while the lower sliding surface 28b is in contact with each of the plurality of lower inclined surfaces 30b.
  • Each of the plurality of lower contact portions 27b receives a force in the forward direction from the lower inclined surface 30b in contact.
  • the lower sliding surface 28b slides along the contacting lower inclined surface 30b.
  • the turntable 25 rotates in the forward direction by a half of the pitch in which the plurality of lower inclined surfaces 30b are arranged by the force.
  • the turntable 25 rotates the plunger 18 in conjunction with it.
  • each of the plurality of lower contact portions 27b is in contact with each of the plurality of lower inclined surfaces 30b.
  • the uppermost portion of each of the plurality of upper contact portions 27a is displaced in the forward direction from the uppermost portion of each of the plurality of upper inclined surfaces 30a by half the pitch in which the plurality of upper inclined surfaces 30a are arranged.
  • Each of the plurality of upper contact portions 27a is separated from any of the plurality of upper inclined surfaces 30a.
  • FIG. 7 the state of switching from release to braking is shown.
  • the plunger 18 moves upward from the lower position in the axial direction.
  • the turntable 25 follows the plunger 18 and moves downward.
  • Each of the plurality of upper contact portions 27a is separated from the upper inclined surface 30a that has been in contact.
  • the plunger 18 moves to the lower position in the axial direction.
  • the turntable 25 follows the plunger 18 and moves upward.
  • Each of the plurality of lower contact portions 27b is separated from any of the plurality of lower inclined surfaces 30b.
  • Each of the plurality of upper contact portions 27a moves upward while the upper sliding surface 28a is in contact with each of the plurality of upper inclined surfaces 30a.
  • Each of the plurality of upper contact portions 27a receives a force in the forward direction from the upper inclined surface 30a that is in contact.
  • the upper sliding surface 28a slides along the contacting upper inclined surface 30a.
  • the turntable 25 rotates in the forward direction by a half of the pitch in which the plurality of upper inclined surfaces 30a are arranged by the force.
  • the turntable 25 rotates the plunger 18 in conjunction with it.
  • each of the plurality of upper contact portions 27a is in contact with each of the plurality of upper inclined surfaces 30a.
  • the lowermost portion of each of the plurality of lower contact portions 27b is shifted in the forward direction from the lowermost portion of each of the plurality of lower inclined surfaces 30b by half the pitch in which the plurality of lower inclined surfaces 30b are arranged.
  • Each of the plurality of lower contact portions 27b is separated from any of the plurality of lower inclined surfaces 30b.
  • the turntable 25 rotates in the forward direction from the state of FIG. 4 by a pitch in which the plurality of upper inclined surfaces 30a are arranged.
  • the plunger 18 rotates in the forward direction by the pitch from the state of FIG. That is, the fixed body 26 rotates the plunger 18 in the forward direction by the pitch through the rotating plate 25 when the plunger 18 reciprocates once between the upper position and the lower position.
  • the brake device 9 includes the plunger 18, the upper bush 20, the lower bush 21, and the rotation mechanism 24.
  • the plunger 18 moves up and down in the axial direction by moving to the lower position in the axial direction.
  • the plunger 18 moves to the upper position in the axial direction when braking the elevator car 4.
  • the inner surface of the upper bush 20 contacts the outer surface of the plunger 18.
  • the inner surface of the lower bush 21 is in contact with the outer surface of the plunger 18.
  • Each of the upper bush 20 and the lower bush 21 guides the movement of the plunger 18 in the axial direction.
  • the rotation mechanism 24 rotates the plunger 18 in the forward direction.
  • Each of the upper bush 20 and the lower bush 21 is biased and is less likely to wear, so that the life of each of the upper bush 20 and the lower bush 21 is extended.
  • the brake device 9 includes an exciting coil 22.
  • the exciting coil 22 is provided outside each of the upper bush 20 and the lower bush 21. The exciting coil 22 moves the plunger 18 to the lower position by the generated magnetic field.
  • FIG. 9 is a top view of a main part of the brake device according to the first embodiment.
  • FIG. 10 is a front view of a main part of the brake device according to the first embodiment.
  • the plunger 18 may vary in coaxiality due to manufacturing errors and the like. At this time, the radial gap between the plunger 18 and the upper bush 20 is biased.
  • the plunger 18 Due to the distribution of the magnetic field inside the exciting coil 22, the plunger 18 is strongly pressed in a direction in which the radial gap between the plunger 18 and the upper bush 20 is narrow. A portion where the gap between the upper bush 20 and the plunger 18 is narrow guides the plunger 18 that is strongly pressed. At this time, the portion of the upper bush 20 is more easily worn than the other portions. If the plunger 18 does not rotate, the plunger 18 is repeatedly and strongly pressed against that portion of the upper bush 20. In this case, the portion of the upper bush 20 can be worn away. If the plunger 18 does not rotate when the upper bush 20 wears unevenly, the portion where the radial gap between the plunger 18 and the upper bush 20 is narrow is worn more unevenly by being strongly pressed. sell.
  • the rotation mechanism 24 rotates the plunger 18 in the forward direction.
  • the plunger 18 does not repeatedly contact the same part of the upper bush 20.
  • the inner surface of the upper bush 20 is less likely to be worn by being biased by contact with the plunger 18.
  • the inner side surface of the lower bush 21 is less likely to be worn by being biased by contact with the plunger 18. Further, an increase in sliding loss that occurs between the plunger 18 and the upper bush 20 and the lower bush 21 is suppressed.
  • a lubricant that reduces friction between the plunger 18 and the upper bush 20 and the lower bush 21 is not used. For this reason, the brake torque of the brake device 9 does not decrease when the lubricant falls between the brake drum 10 and the lining 12.
  • the rotating mechanism 24 includes a rotating disk 25 and a fixed body 26.
  • the turntable 25 is provided at the end of the plunger 18 in the axial direction.
  • the turntable 25 moves in the axial direction following the plunger 18.
  • the turntable 25 rotates the plunger 18 in conjunction with the axial direction.
  • the fixed body 26 rotates the plunger 18 in the forward direction via the turntable 25.
  • the plunger 18 does not need a structure for rotation such as a groove on the outer surface.
  • the outer surface of the plunger 18 can contact the upper bush 20 and the lower bush 21.
  • wear of the upper bush 20 and the lower bush 21 is not advanced.
  • the size of the operating portion 15 does not increase in the radial direction.
  • the fixed body 26 includes a lower fixed platen 29b and an upper fixed platen 29a.
  • the lower fixed platen 29b faces the lower side that is one side of the rotary platen 25 in the axial direction.
  • the lower fixed platen 29b rotates the turntable 25 in the forward direction when the plunger 18 moves to the lower position.
  • the upper fixed plate 29a faces the upper side, which is the other side of the rotary plate 25, in the axial direction.
  • the upper fixed platen 29a rotates the turntable 25 in the forward direction when the plunger 18 moves to the upper position.
  • the plunger 18 alternately repeats the downward movement and the upward movement by opening and braking the brake device 9.
  • the fixed body 26 rotates the plunger 18 in the forward direction both when the plunger 18 moves downward and when the plunger 18 moves upward. Thereby, the same location does not contact the plunger 18 and the upper bush 20 continuously in the movement of the plunger 18 in the axial direction.
  • the plunger 18 and the lower bush 21 do not come into contact with each other continuously in the axial movement of the plunger 18. For this reason, the inner surface of the upper bush 20 is less likely to be worn by being biased by contact with the plunger 18. Similarly, the inner side surface of the lower bush 21 is less likely to be worn by being biased by contact with the plunger 18.
  • the turntable 25 includes a lower contact portion 27b and an upper contact portion 27a.
  • the lower contact portion 27b is provided on the side facing the lower fixed platen 29b.
  • the upper contact portion 27a is provided on the side facing the upper fixed platen 29a.
  • the lower fixed platen 29b has a plurality of lower inclined surfaces 30b.
  • Each of the plurality of lower inclined surfaces 30 b is inclined in the same direction in the rotation direction of the rotating disk 25.
  • the plurality of lower inclined surfaces 30b are arranged in an annular shape on the side facing the rotating disk. The plurality of lower inclined surfaces 30b come into contact with the lower contact portion 27b when the plunger 18 moves to the lower position, and rotate the turntable 25 in the forward direction.
  • the upper fixed platen 29a has a plurality of upper inclined surfaces 30a.
  • Each of the plurality of upper inclined surfaces 30 a is inclined in the same direction in the rotation direction of the turntable 25.
  • the plurality of upper inclined surfaces 30a are arranged in an annular shape on the side facing the rotating disk. When the plunger 18 moves to the upper position, the plurality of upper inclined surfaces 30a come into contact with the upper contact portion 27a and rotate the turntable 25 in the forward direction.
  • the lower inclined surface 30b converts the downward movement of the plunger 18 in the axial direction into a forward rotational movement.
  • the upper inclined surface 30a converts the upward movement of the plunger 18 in the axial direction into a forward rotational movement. Thereby, the rotation mechanism 24 does not require additional power for rotating the plunger 18.
  • the plurality of lower inclined surfaces 30b are arranged in an annular shape at a constant pitch.
  • the plurality of upper inclined surfaces 30a are arranged in an annular shape at the pitch.
  • Each of the plurality of lower inclined surfaces 30b is shifted in the forward direction by a half of the pitch from each of the plurality of upper inclined surfaces 30a on the projection plane perpendicular to the axial direction.
  • each of the plurality of lower inclined surfaces 30b is shifted in the forward direction by half of the pitch from each of the plurality of upper inclined surfaces 30a.
  • the fixed body 26 can rotate the rotary disk 25 in the forward direction by at least one of the lower fixed disk 29b and the upper fixed disk 29a at any rotation position of the rotary disk 25.
  • the plunger 18 is reliably rotated by the movement in the axial direction.
  • the plunger 18 rotates by half of the pitch.
  • the brake device 9 includes a case 23.
  • the case 23 accommodates the plunger 18, the upper bush 20, and the lower bush 21.
  • the rotation mechanism 24 is provided outside the case 23.
  • the rotation mechanism 24 can be easily added from the outside. For this reason, the rotation mechanism 24 can extend the lifetime of the existing brake device.
  • the number of the plurality of lower contact portions 27b may be smaller than the number of the plurality of lower inclined surfaces 30b.
  • the number of the plurality of upper contact portions 27a may be smaller than the number of the plurality of upper inclined surfaces 30a.
  • Each of the plurality of lower contact portions 27b may be a rib.
  • Each of the plurality of upper contact portions 27a may be a rib.
  • Each of the plurality of lower inclined surfaces 30b may be curved and inclined.
  • Each of the plurality of upper inclined surfaces 30a may be curved and inclined.
  • Each of the plurality of lower contact portions 27b may be displaced in the forward direction by half of the pitch from each of the plurality of upper contact portions 27a on the projection plane perpendicular to the axial direction. At this time, each of the plurality of lower inclined surfaces 30b overlaps one of the plurality of upper inclined surfaces 30a on the projection plane perpendicular to the axial direction.
  • the brake device according to the present invention can be applied to an elevator.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Cage And Drive Apparatuses For Elevators (AREA)

Abstract

La présente invention a pour objet de réaliser un dispositif de frein (9) pour un ascenseur (1), dans lequel des douilles (5, 6) ne sont pas facilement sollicitées et usées. Un plongeur (18) se déplace vers une position inférieure dans sa direction axiale, libérant ainsi l'élévation et la descente d'une cabine (4). Le plongeur (18) se déplace vers une position supérieure dans la direction axiale lors du freinage de l'élévation et de la descente de la cabine (4). Les douilles (5, 6) guident le mouvement du plongeur (18) dans la direction axiale. Un mécanisme rotatif (24) amène le plongeur (18) à tourner dans la direction avant lorsque le plongeur (18) se déplace entre la position inférieure et la position supérieure.
PCT/JP2018/018801 2018-05-15 2018-05-15 Dispositif de frein pour ascenseur WO2019220550A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/018801 WO2019220550A1 (fr) 2018-05-15 2018-05-15 Dispositif de frein pour ascenseur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/018801 WO2019220550A1 (fr) 2018-05-15 2018-05-15 Dispositif de frein pour ascenseur

Publications (1)

Publication Number Publication Date
WO2019220550A1 true WO2019220550A1 (fr) 2019-11-21

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PCT/JP2018/018801 WO2019220550A1 (fr) 2018-05-15 2018-05-15 Dispositif de frein pour ascenseur

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WO (1) WO2019220550A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7545730B2 (ja) 2021-01-22 2024-09-05 旭サナック株式会社 プランジャポンプ、及びプランジャポンプ用プランジャ

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023655A (en) * 1975-11-21 1977-05-17 Mitsubishi Denki Kabushiki Kaisha Brake for elevator
JPH09280282A (ja) * 1996-04-11 1997-10-28 Mitsubishi Denki Bill Techno Service Kk ブレーキ装置
JP2003343609A (ja) * 2002-05-29 2003-12-03 Hitachi Ltd 電磁ブレーキ装置
JP2007187121A (ja) * 2006-01-16 2007-07-26 Toyota Motor Corp 燃料ポンプ
WO2007142135A1 (fr) * 2006-06-05 2007-12-13 Mitsubishi Pencil Co., Ltd. Crayon mécanique
JP2008007217A (ja) * 2006-06-27 2008-01-17 Mitsubishi Electric Corp エレベータ巻上機用ブレーキ装置
JP2012130216A (ja) * 2010-12-17 2012-07-05 Nec Infrontia Corp 充電機構および充電器
JP2018027849A (ja) * 2016-08-19 2018-02-22 株式会社日立ビルシステム 電磁ブレーキ摩耗検出装置

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4023655A (en) * 1975-11-21 1977-05-17 Mitsubishi Denki Kabushiki Kaisha Brake for elevator
JPH09280282A (ja) * 1996-04-11 1997-10-28 Mitsubishi Denki Bill Techno Service Kk ブレーキ装置
JP2003343609A (ja) * 2002-05-29 2003-12-03 Hitachi Ltd 電磁ブレーキ装置
JP2007187121A (ja) * 2006-01-16 2007-07-26 Toyota Motor Corp 燃料ポンプ
WO2007142135A1 (fr) * 2006-06-05 2007-12-13 Mitsubishi Pencil Co., Ltd. Crayon mécanique
JP2008007217A (ja) * 2006-06-27 2008-01-17 Mitsubishi Electric Corp エレベータ巻上機用ブレーキ装置
JP2012130216A (ja) * 2010-12-17 2012-07-05 Nec Infrontia Corp 充電機構および充電器
JP2018027849A (ja) * 2016-08-19 2018-02-22 株式会社日立ビルシステム 電磁ブレーキ摩耗検出装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7545730B2 (ja) 2021-01-22 2024-09-05 旭サナック株式会社 プランジャポンプ、及びプランジャポンプ用プランジャ

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