KR20100051111A - Hoist for elevator and brake system - Google Patents

Hoist for elevator and brake system Download PDF

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Publication number
KR20100051111A
KR20100051111A KR1020107006530A KR20107006530A KR20100051111A KR 20100051111 A KR20100051111 A KR 20100051111A KR 1020107006530 A KR1020107006530 A KR 1020107006530A KR 20107006530 A KR20107006530 A KR 20107006530A KR 20100051111 A KR20100051111 A KR 20100051111A
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KR
South Korea
Prior art keywords
braking
bowl
iron core
brake drum
brake
Prior art date
Application number
KR1020107006530A
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Korean (ko)
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KR101201027B1 (en
Inventor
고지 오가와
Original Assignee
미쓰비시덴키 가부시키가이샤
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Publication of KR20100051111A publication Critical patent/KR20100051111A/en
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Publication of KR101201027B1 publication Critical patent/KR101201027B1/en

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/24—Operating devices
    • B66D5/30—Operating devices electrical
    • 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
    • B66B11/043—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation
    • B66B11/0438—Driving gear ; Details thereof, e.g. seals actuated by rotating motor; Details, e.g. ventilation with a gearless driving, e.g. integrated sheave, drum or winch in the stator or rotor of the cage motor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
    • B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
    • B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
    • B66D5/06—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect
    • B66D5/08—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with radial effect embodying blocks or shoes

Abstract

A brake system and a hoist for elevator which can be made compact such that the brake torque does not rely upon the rotational direction of the brake drum. The brake system and a hoist for elevator comprise an electromagnet mechanism having a fixed core for attracting a movable core by an electromagnet coil and pressing it by a push spring, and a brake member fixed to the movable core and braking the brake drum wherein the movable core is rotary supported for the axis directing the tangential direction in the rotational direction of the brake drum, and rotated by the fixed core thus pressing the brake member against the brake drum or separating the brake member therefrom.

Description

Hoist and brake system for elevators {HOIST FOR ELEVATOR AND BRAKE SYSTEM}

TECHNICAL FIELD The present invention relates to a hoist that drives an elevator, and more particularly, to a brake device that brakes by pressurizing a brake drum and a hoist provided with the same.

The conventional hoisting machine includes a brake drum rotating about a main shaft, a braking member disposed on an inner circumferential side of the brake drum to brake rotation, and an arm disposed on an inner circumferential side of the brake drum and rotatably supported at an end portion of the brake drum. Equipped with. The braking member is mounted at the center of the arm so that the braking member presses and releases the brake drum by the rotation of the arm. As a result, braking and braking of the hoisting machine are performed. And the push spring which presses an arm to the brake drum side is arrange | positioned at the other end part on the opposite side to the rotation support part of an arm. By this push spring, the brake member presses the brake drum on the principle of the lever, and brakes the rotation of the brake drum by the friction force generated in the rotational direction. Moreover, the action point of the frictional force of a braking member and the rotational support part of an arm is separated so that a rotation moment may arise in an arm by the frictional force of a braking member. The braking member and the arm are two, and the rotational center of the brake drum is symmetrically arranged (see Patent Document 1).

Another conventional hoisting machine includes a brake drum rotating about a main shaft, a brake member disposed on an inner circumferential side of the brake drum to brake rotation, and in series with the brake member in a direction in which the brake member presses the brake drum. It is equipped with the electromagnet mechanism connected. This electromagnet mechanism is provided with a movable iron core and a fixed iron core which sucks this movable iron core with an electromagnet coil and presses it with a push spring. Then, the moving core moves back and forth with respect to the fixed core by the electromagnet mechanism, so that the braking member presses and releases the brake drum. As a result, braking and braking of the hoisting machine are performed. Moreover, two brake apparatuses are provided, and the rotation center of a brake drum is arrange | positioned symmetrically (refer patent document 2).

The hoist as described above has two brakes, and even when one brake is not braked by any failure, the hoist is stopped by the other brake to stop the hoist.

[Patent Document 1] WO03 / 002448 Publication (pages 11-13, FIG. 1) [Patent Document 2] WO2005 / 019085 publication (pages 3-4, FIG. 2)

As described above, the hoisting machine of Patent Document 1 is separated from the operation point of the frictional force between the rotational support portion of the arm and the braking member so that the rotational moment is generated by the frictional force of the braking member. For this reason, when braking with one brake, the braking torque differs depending on the rotational direction of the brake drum for the reason described below. The frictional force of the braking member acts in the reverse direction of the rotational direction of the brake drum. Therefore, by the direction of this frictional force, the rotation moment acts on the arm in the direction in which the brake drum is pressed or in the reverse direction. When the rotational moment of this arm acts in the direction to press the brake drum, the pressing force of the push spring is encouraged to increase the braking torque. On the contrary, when the rotation moment of the arm acts in the opposite direction to the pressing direction of the brake drum, the braking torque is reduced by countering the pressing force of the push spring. As a result, the braking torque varies depending on the rotational direction of the brake drum.

To stop the hoist in both rotational directions of the brake drum with one brake, a braking force is required to compensate for the reduction in braking torque. From the ratio of the rotational support of the arm to the distance between the braking member and the pressing spring, that is, the ratio of the lever, the spring force of the pressing spring can be set smaller than the pressing force of the braking member by this ratio. In order to make it larger than necessary, there existed a problem that a brake was enlarged.

Moreover, in the winding machine of patent document 2, since a press spring and a braking member are arrange | positioned in series, braking torque does not differ according to the rotation direction of a brake drum, but the spring force of a push spring is similar to the ratio of the lever lever of a patent document 1, There is a problem that it cannot be set small, the force of the pressing force of the braking member itself is required, and the brake is enlarged.

The present invention has been made to solve such a problem, and an object of the present invention is to obtain a brake device and a hoist that can be miniaturized without depending on the rotational direction of the brake drum.

In the elevator hoist and brake device according to the present invention, a fixed iron core having an electromagnetic coil for generating an electromagnetic force and a pressing spring for generating a force in response to the electromagnetic force, and the fixed iron core is separated from the fixed iron core by an electromagnetic coil and a pressing spring. A movable core for pressurizing and a braking member mounted to the movable core to brake the brake drum, the movable core being rotated with respect to the shaft core in the tangential direction of the rotational direction of the brake drum, and rotated by the fixed iron core, Pressing and releasing the braking member against the brake drum.

In the present invention, the movable iron core is rotatably supported with respect to the shaft center in the tangential direction of the rotational direction of the brake drum. As a result, when the braking member presses and brakes the brake drum, the braking force of the braking member generated in the rotational direction of the brake drum does not act in the rotational direction of the movable iron core, thereby affecting the force of the pressing spring to press the movable iron core. Does not give. Therefore, since the braking torque does not decrease by the rotational direction of the brake drum, it is possible to miniaturize the elevator hoisting machine and the brake device without making the push spring larger than necessary.

BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the front view which showed the half section of the hoisting machine in Embodiment 1 of this invention.
FIG. 2 is a diagram illustrating a cross section AA of FIG. 1.
3 is an enlarged view of an essential part of FIG. 1;
4 is an enlarged view of an essential part of FIG. 2.
It is a figure which shows the front view which showed the half cross section of the hoisting machine in Embodiment 2 of this invention.
FIG. 6 is a diagram illustrating a section BB of FIG. 5.
FIG. 7 is an enlarged view of an essential part of FIG. 5.
FIG. 8 is an enlarged view of a main part of FIG. 6.
It is a figure which shows the front view which showed the half cross section of the hoisting machine in Embodiment 3 of this invention.
FIG. 10 is a diagram illustrating a section CC of FIG. 9.
FIG. 11 is an enlarged view of a main part of FIG. 9. FIG.
12 is an enlarged view of a main part of FIG. 10.

BEST MODE FOR CARRYING OUT THE INVENTION [

EMBODIMENT OF THE INVENTION Hereinafter, preferred embodiment of this invention is described with reference to drawings.

Embodiment 1

BRIEF DESCRIPTION OF THE DRAWINGS The front view which showed the half section of the hoisting machine in Embodiment 1 for implementing this invention. FIG. 2 shows a cross section A-A of FIG. 1. 3 is an enlarged view of an essential part of FIG. 1, and FIG. 4 is an enlarged view of an essential part of FIG. 2.

In the figure, the base 1 forms a bowl-shaped portion 1a that is open to one side on the outside, and forms a bottom surface portion 1b that couples the bowl-shaped portion 1a to each other inside. The fixed iron core 2 is attached to this bottom surface part 1b with the bolt 3 from the side opposite to the opening side of the bowl shape part 1a. The main shaft 4 is provided in the center of the fixed iron core 2 so as to protrude toward the opening side of the bowl 1a, and the rotation body 5 is rotatably supported by the bearing 4a on the main shaft 4. . The rotary body 5 is formed in a bowl shape and is opened to one side, and the bottom surface is disposed facing the bottom surface portion 1b of the base 1. The drive sheave 6 is provided in the bottom surface side of the rotating body 5. A rope (not shown) is wound around the drive sheave 6, and the drive sheave 6 rotates to lift and lower the elevator car of the elevator suspended by the rope. The cylindrical brake drum 7 is provided in the opening side of the rotating body 5. The brake drum 7 is arranged to be inserted into the bowl 1a of the base 1.

A magnetic field magnet 8 is provided on the outer circumference of the brake drum 7, and a stator winding 9 is opposed to the magnetic field magnet 8 of the bowl 1a of the base 1. It is installed in the inner circumference. The electric motor 10 is constituted by the field magnet 8 and the stator windings 9. A braking surface 11 is formed on the inner circumferential side of the brake drum 7, and the brake device 12 has two centers of rotation of the brake drum 7 symmetrically, and is disposed on the inner circumferential side of the brake drum 7. It is. This brake device 12 is comprised as follows. In order to simplify the description, one brake device will be described.

The braking member 13 is provided to face the braking surface 11. When the braking member 13 presses the braking surface 11, the brake drum 7 is braked to stop the hoisting machine. The fixed iron core 2 has a suction surface 2a facing the braking surface 11, and is provided with an electromagnetic coil 2b on which a coil is wound. By energizing the electromagnetic coil 2b, an electromagnetic force is generated on the suction surface 2a. In addition, the pressing spring 14 is provided in the fixed iron core 2 in parallel with the electromagnetic coil 2b. The push spring 14 generates a pressing force against the electromagnetic force of the electromagnetic coil 2b. Moreover, the fixing bolt 14b is attached to the fixed iron core 2 via the support plate 14a on the side opposite to the side to which the pressing spring 14 presses. By rotating this adjusting bolt 14b, the pressing spring is adjusted by changing the length of the push spring via the support plate 14a.

The support portion 16 is provided on both sides of the movable iron core 15 so that the movable iron core 15 is fitted into the fixed iron core 2. The movable iron core 15 forms a plate shape and is disposed facing the suction surface 2a between the braking member 13 and the suction surface 2a. The movable iron core 15 is rotatably supported with respect to the shaft core 17 in the tangential direction of the rotational direction of the brake drum 7. This rotation support is as follows. Pins 18 having shaft cores 17 are provided on the bottom surface side of the brake drum 7 at both end sides of the movable iron core 15, and the pins 18 are attached to the supporting portion 16 of the fixed iron core 2; It is rotatably supported.

The pressing spring 14 pushes the suction surface 2a side of the movable iron core 15. The movable iron core 15 is rotated to abut against the suction surface 2a by resisting the pressing force of the pressing spring 14 by the electromagnetic force of the electromagnetic coil 2b. Moreover, the movable iron core 15 interrupts the energization of the electromagnetic coil 2b, and rotates so that it may be separated from the suction surface 2a by the push spring 14. As shown in FIG. The braking member 13 is mounted on the other side of the movable iron core 15. The position where the braking member 13 presses the braking surface 11, that is, the position where the braking member 13 is mounted on the movable iron core 15 is a position where the electromagnetic coil 2b sucks and the pressing spring 14 It is arrange | positioned between the position to press and the shaft center 17.

In addition, the braking member 13 is rotatably mounted to the movable core 15 through the rotation mechanism 20. This rotating mechanism 20 has a spherical shaft 21 and a spherical seat 22. The spherical shaft 21 has a rod shape, and has a spherical portion 21b having a convex spherical surface 21a protruding in the forward direction of the braking member 13 at its tip, and a spherical portion 21b of the spherical shaft 21b. The screw 21c is formed in the diameter smaller than the diameter. The spherical shaft 21 is fixed to the movable core 15 by fastening the screw 21c and the stop nut 23 to each other. The spherical seat 22 forms a disc shape, has a concave spherical surface 22a coupled to the spherical surface 21a of the spherical surface portion 21b, and the bottom surface portion is attached to the braking member 13. A groove 24 is formed in the braking member 13, and the spherical seat 22 is fitted into the groove 24. This groove 24 is opened to the bottom surface side of the brake drum 7. Also, two 'Z' shaped leaf springs 25 are mounted on both sides of the spherical shaft 21. One end of the leaf spring 25 abuts against the opposite side of the spherical surface 21a of the spherical surface portion 21b so that the spherical portion 21b and the spherical seat 22 are interposed therebetween. It is installed.

The guide part 26 is integrally formed inside the bowl 1a of the base 1. The guide portion 26 is formed on both end sides of the braking member 13 in the rotational direction of the brake drum 7. Moreover, the guide part 26 slidably guides the operation | movement which the braking member 13 advances with respect to the brake drum 7.

Next, the operation of the hoist will be described. First, an operation of driving the hoist will be described. The rotor 5 is rotated by energizing the stator winding 9 and the field magnet 8. At this time, the electromagnetic coil 2b is energized to resist the pressing force of the pressing spring 14 to generate an electromagnetic force, and rotate around the shaft core 17 so that the movable iron core 15 abuts on the suction surface 2a. do. As a result, the braking member 13 is guided to the guide portion 26 to separate from the brake drum 7 to release the braking.

Next, the operation of stopping the hoist will be described. The electric current of the stator winding 9 is interrupted to stop the driving of the motor. At this time, the energization of the electromagnetic coil 2b is also blocked to release the electromagnetic force, and the pressing spring 14 presses the movable core 15. Then, the movable iron core 15 is rotated about the shaft core 17 so as to be separated from the suction surface 2a. As a result, the braking member 13 is guided and guided by the guide portion 26 to press the brake drum 7 to generate braking torque. As a result, the rotating body 5 is braked.

At this time, when the braking member 13 is inclined with respect to the braking surface 11, the braking member 13 is rotated with respect to the movable iron core 15 by the rotating mechanism 20 so that the braking surface 11 is aligned. Lose. At this time, the rotating mechanism 20 operates as follows. As the spherical surface 21a and the spherical surface 22a are aligned, the spherical seat 22 rotates about the spherical shaft 21 along the spherical surface, and the braking member 13 rotates with respect to the movable core 15. As shown in FIG. Then, when the movable core 15 is attracted to the fixed core 2, the leaf spring 25 holds the spherical portion 21b and the spherical seat 22 by the spring force, and the braking member 13 The position of the braking surface 11 is separated from the braking surface 11 as it is. Moreover, although the force generate | occur | produces in the tangential direction of the braking surface 11 to the braking member 13, this force bears the guide part 26.

As mentioned above, the hoisting machine in Embodiment 1 of this invention has the effect demonstrated next. The braking member 13 is mounted to the movable iron core 15, and the movable iron core 15 is rotatably supported with respect to the shaft core 17 in the tangential direction of the rotational direction of the brake drum 7. As a result, when the braking member 13 presses and brakes the braking surface 11 of the brake drum 7, the braking force generated in the rotational direction of the brake drum 7, that is, the friction force of the braking member 13 is reduced. Since it does not act in the rotational direction of the movable core 15, it does not affect the force of the pressing spring 14 to press the movable core 15. Therefore, since the braking torque does not decrease according to the rotational direction of the brake drum 7, the brake device 12 can be miniaturized without making the push spring 14 larger than necessary.

In addition, the position at which the braking member 13 presses the braking surface 11 is disposed between the position at which the push spring 14 presses and the shaft center 17 of the pin 18. Thereby, according to the principle of the lever, the pressing force of the pressing spring 14 can be made smaller than the force that the braking member 13 presses the braking surface 11, and the brake device 12 can be further downsized.

In addition, the position where the braking member 13 presses the braking surface 11 is disposed between the position where the electromagnetic coil 2b sucks and the shaft center 17 of the pin 18. Thereby, the suction force by the electromagnetic force of the electromagnetic coil 2b can be made smaller than the force which the braking member 13 presses the braking surface 11 by the principle of a lever, and can miniaturize the electromagnetic coil 2b. .

The braking member 13 is rotatably mounted to the movable iron core 15 through the rotating mechanism 20. This pressurizes the braking member 13 to fit the braking surface 11 during braking, so that a stable braking torque is obtained. In addition, when the braking is released, the braking member 13 is separated from the braking surface 11 in a position aligned with the braking surface 11, so that the clearance between the braking member 13 and the braking surface 11 can be secured. . As a result, when the brake drum 7 is rotated, the braking member 13 does not come into contact with the braking surface 11, so that a highly reliable brake device is obtained.

Further, the spherical shaft 21 is fixed to the movable core 15 by forming a screw 21c at the base and engaging the screw 21c with the stop nut 23. Then, by rotating the spherical shaft 21, the amount of protrusion of the movable core 15 is adjusted by adjusting the screwing action of the screw 21c, that is, the braking member 13 Adjust the amount of advance movement. Thereby, the advancing and moving amount of the braking member 13 can be adjusted by the simple operation of rotating the spherical shaft 21.

Moreover, the fixing bolt 14b is attached to the fixed iron core 2 via the support plate 14a on the side opposite to the side to which the pressing spring 14 presses. As a result, the braking torque can be adjusted by adjusting the pressing force of the pressing spring 14 by a simple operation of rotating the adjusting bolt 14b.

A groove 24 is formed in the braking member 13, and the spherical seat 22 is fitted into the groove 24. As a result, the distance between the movable iron core 15 and the braking member 13 can be shortened and the brake device 12 can be miniaturized. In addition, the groove 24 is opened on the bottom surface side of the brake drum 7 with a width larger than the width of the spherical seat 22. Then, one end is fitted to the spherical surface 21a of the spherical shaft 21 so that the approximately 'Z' shaped leaf spring 25 is interposed between the spherical surface 21a of the spherical shaft 21 and the spherical seat 22. The other end is attached to the braking member 13. In this way, the braking member 13 can be detached by pressing the leaf spring 25 to open the movable iron core 15 or the fixed iron core 2 from the hoisting machine. Therefore, the braking member 13 can be replaced without removing the whole brake device from the hoisting machine, and the workability of maintenance is good.

In addition, the movable iron core 15 is rotatably supported by the support portion 16 of the fixed iron core 2, and the guide portion 26 is provided at both ends of the braking member 13 toward the rotational direction of the brake drum 7. It is provided. And the guide part 26 is provided in the base | substrate 1 so that slidably guides with respect to the advancing / removing motion of the braking member 13 ,. As a result, the braking member 13 can smoothly abut or detach from the braking surface 11. In addition, when the braking torque is generated, the guide portion 26 bears the braking force in the rotational direction of the brake drum 7 generated in the braking member 13. Therefore, the movable iron core 15 and the fixed iron core 2 do not have to support this force, and the brake apparatus 12 can be miniaturized.

The hoisting machine has a bowl-shaped portion 1a opened to one side on the outside, and has a base 1 having a bottom surface portion 1b which is coupled to each other with the bowl-shaped portion 1a on the inside thereof. The fixed iron core 2 is attached to 1b by the bolt 3 from the side opposite to the opening side of the bowl part 1a. Moreover, the main shaft 4 is provided in the center part of the fixed iron core 2 so that it may protrude toward the opening side of the bowl shape part 1a, The rotating body 5 is rotatably supported by this main shaft 4. The rotary body 5 is formed in a bowl shape and is opened to one side, and the bottom surface is disposed facing the bottom surface portion 1b of the base 1, and the driving sheave 6 is provided on the bottom surface side. The brake drum 7 which has the braking surface 11 in the inner periphery is provided in the opening side of the rotating body 5. The brake device 12 is arrange | positioned at the inner peripheral side of this brake drum 7. In the hoisting machine, the field magnet 8 is provided on the outer circumference of the brake drum 7, and the stator winding 9 is installed on the inner circumference of the bowl 1a of the base 1 to face the field magnet 8. And has an electric motor 10.

Thereby, the thickness in the axial direction of the hoisting machine and the diameter in the outer circumferential direction can be made small, and the hoisting machine can be miniaturized.

Embodiment 2 Fig.

FIG. 5: shows the front view which showed the half cross section of the hoisting machine in Embodiment 2 for implementing this invention. FIG. 6 shows a section B-B in FIG. 5. 7 is an enlarged view of an essential part of FIG. 5, and FIG. 8 is an enlarged view of an essential part of FIG. 6.

In the brake device 12 according to the first embodiment, the movable iron core 15 is rotatably supported by the fixed iron core 2, but the brake device 30 of the second embodiment rotates the movable iron core 32 to the base 31. It is supported.

The base 31 forms the bowl shape 31a which opened to one side in the outer side part, and forms the bottom surface 31b which couple | bonded this bowl shape 31a with the inside. The fixed iron core 2 is attached to this bottom surface 31b from the side opposite to the opening side of the bowl shape 31a with the bolt 3. The base 31 has support parts 31c on both sides of the movable core 32 so that the movable iron core 32 can be inserted.

The movable iron core 32 has the guide part 32a which protruded so that a cross section may form concave shape. And the braking member 13 is arrange | positioned facing the braking surface 11 in the inner peripheral side of the brake drum 7, and is provided so that it may fit in the inside of the guide part 32a of the movable iron core 32. As shown in FIG. Moreover, the concave bottom surface part of the movable core 32 is arrange | positioned facing the suction surface 2a. The movable iron core 32 is rotatably supported with respect to the shaft core 33 in the tangential direction of the rotational direction of the brake drum 7. This rotation support is as follows. Pins 34 having shaft cores 33 are provided on the bottom surface side of the brake drum 7 at both ends of the movable iron core 32, and the pins 34 rotate on the support 31c of the base 31. Possibly supported.

Other points are the same as that of Embodiment 1, and detailed description is abbreviate | omitted. In addition, the thing of the same code | symbol as Embodiment 1 shows a considerable part.

Next, the operation will be described. The basic part is the same as that of Embodiment 1, and operation | movement of a brake is demonstrated here.

First, an operation of releasing braking will be described. The electromagnetic coil 2b is energized to resist the pressing force of the push spring 14 to generate an electromagnetic force, and rotate around the shaft core 33 so that the movable iron core 32 abuts on the suction surface 2a. As a result, the braking member 13 is separated from the brake drum 7 in a state in which the braking member 13 is engaged with the guide portion 32a of the movable iron core 32 to release the braking.

Next, the braking operation will be described. The electromagnetic coil 2b blocks the energization to release the electromagnetic force, and the push spring 14 presses the movable core 32. Then, the movable iron core 32 rotates about the shaft core 33 so as to press the braking member 13 to the brake drum 7. Then, the braking member 13 presses the brake drum 7 in a state in which the braking member 13 is coupled to the guide portion 32a of the movable iron core 32 to generate braking torque. As a result, the rotating body 5 is braked. At this time, a force is generated in the tangential direction of the braking surface 11 in the braking member 13, but this force is transmitted to the guide portion 32a of the movable iron core 32, and the pins 34 on both sides bear it. Moreover, when the movable iron core 32 moves in the direction of this force and contacts the support part 31c of the base 31, this force is also burdened by the abutted part.

As mentioned above, the hoisting machine in Embodiment 2 of this invention shows the effect similar to Embodiment 1, and shows the effect demonstrated next.

Since the braking member 13 is coupled to the guide portion 32a of the movable iron core 32, the braking member 13 moves forward and backward with respect to the brake drum 7 as a track synchronized with the rotational track of the movable iron core 32. Then, the braking member 13 moves back and forth while maintaining the posture with respect to the movable iron core 32. Therefore, when the braking is released, the inclination of the gap between the braking member 13 and the braking surface 11 is small does not occur. Therefore, the braking member 13 can release the braking in the state which fully secured the clearance with the braking surface 11, and can obtain a highly reliable hoisting machine.

Embodiment 3:

FIG. 9: shows the front view which showed the half cross section of the hoisting machine in Embodiment 3 of this invention. FIG. 10 shows a section C-C of FIG. 9. FIG. 11 is an enlarged view of an essential part of FIG. 9, and FIG. 12 is an enlarged view of an essential part of FIG. 10.

In Embodiment 1, the brake device 12 is disposed on the inner circumferential side of the brake drum 7, while in Embodiment 3, the brake device 40 is disposed on the outer circumferential side of the brake drum 41.

In the figure, the base 42 forms a bowl shape 42a open to one side on the outside, and forms a bottom surface 42b in which the bowl shape 42a is coupled to each other inside. And the brake attaching part 42c is provided in the both sides of the outer periphery of bowl shape 42a. The brake device 40 is attached to this brake mounting part 42c with the bolt 3. Moreover, the main shaft 4 is provided in the center part of the bottom face 42b so that it may protrude toward the opening side of the bowl shape 42a, The rotating body 43 will be rotatably supported by the bearing 4a in the main shaft 4, have. The rotating body 43 is formed in a bowl shape and opened to one side, and the bottom surface is disposed facing the bottom surface 42b of the base 42. The drive sheave 6 is provided in the bottom surface side of the rotating body 43. As shown in FIG. The cylindrical brake drum 41 is provided on the opening side of the rotating body 43. The brake drum 41 is arranged to be inserted into the bowl 42a portion of the base 42.

A magnetic field magnet 8 is provided on the outer circumference of the brake drum 42, and a stator winding 9 is provided on the inner circumference of the base 42 opposite to the magnetic field magnet 8. Moreover, the braking surface 44 is provided on the outer circumferential side of the brake drum 41 adjacent to the field magnet 8, and the brake device 40 has two rotation centers of the brake drum 41 symmetrically to the left and right, It is arrange | positioned at the outer peripheral side of the brake drum 41. As shown in FIG. In order to simplify the description, one brake device will be described.

The braking member 45 is provided to face the braking surface 44. When the braking member 45 presses the braking surface 44, the brake drum 41 is braked to stop the hoisting machine. The braking member 45 is mounted to the movable iron core 15 through the rotating mechanism 20. Similarly to the first embodiment, the movable iron core 15 is rotatably supported by the fixed iron core 2 via the pin 18. The fixed iron core 2 is attached to the brake mounting portion 42c by the bolt 3. Then, similarly to the first embodiment, the movable iron core 15 is rotated by the fixed iron core 2 so that the braking member 45 presses the brake surface 44 or moves away from the brake surface 44. As a result, braking and braking are performed.

Other points are the same as that of Embodiment 1, and detailed description is abbreviate | omitted. In addition, the thing of the same code | symbol as Embodiment 1 shows a considerable part.

As mentioned above, the hoisting machine in Embodiment 3 of this invention also shows the same effect as Embodiment 1. In addition, by arranging the brake device 40 on the outer circumferential side of the brake drum 41, the thickness in the axial direction is larger than that in the first embodiment, but the position where the brake member 13 contacts the brake surface 44 It can enlarge in a radial direction and the pressing force of the braking member 13 can be made small by that. As a result, the brake device can be miniaturized.

Industrial availability

As described above, the elevator hoisting machine according to the present invention is suitable for being used as a driving device for elevating the elevator car and stopping the car on the landing floor.

Claims (9)

A brake drum installed on a hoist to drive an elevator and having a braking surface;
A braking member provided opposite the braking surface and braking the brake drum by retreating from the braking surface;
An electromagnetic coil in which a coil is wound to generate an electromagnetic force by energization;
A fixed iron core for mounting the electromagnetic coil,
A push spring installed at the fixed iron core to generate a force that resists the electromagnetic force of the electromagnetic coil;
And a movable iron core rotatably supported with respect to the shaft center in the tangential direction of the rotational direction of the brake drum, rotating by the electromagnetic coil and the push spring, and pressing and releasing the braking member against the braking surface. Brake device, characterized in that. The method according to claim 1,
The position at which the braking member presses the braking surface is disposed between at least one of a position at which the push spring presses the movable core and a position at which the electromagnetic coil sucks the movable core and the shaft core. Brake device, characterized in that. The method according to claim 1,
And a rotating mechanism for rotatably mounting the braking member to the movable iron core. The method according to claim 3,
The rotating mechanism has a convex spherical shape at the tip, and is formed with a spherical shaft mounted on the movable core to adjust the amount of movement of the braking member in the advancing direction, and forms a disc to engage the convex spherical surface. A brake device having a concave spherical surface and having a spherical seat provided on the braking member. The method according to claim 4,
A brake device, characterized in that a groove is formed in the braking member that is open to either side with a width greater than the outer diameter of the spherical seat. The method according to any one of claims 1 to 5,
And a adjusting means for adjusting the pressing force of the push spring on the fixed iron core. The brake device according to any one of claims 1 to 5, wherein the movable iron core is rotatably supported by the fixed iron core, and has the braking surface on an inner circumference of the brake drum,
A base formed with a bowl-shaped portion opened to one side on the outside, and having a bottom portion formed with the bowl-shaped portion joined to the inside;
A guide portion provided inside the bowl-shaped portion of the gas to slidably guide the movement of the braking member with respect to the brake drum;
A main shaft mounted to the bottom surface of the base and protruding toward the opening side of the bowl-shaped portion of the base at the center of the fixed core;
A rotating body supported by the main shaft so as to be rotatable, opening in one side in a bowl shape, and having a bottom surface facing the bottom surface portion of the body;
A drive sheave provided on the bottom surface side of the rotating body,
A field magnet provided on an opening side of the rotating body and provided on an outer circumference of the brake drum;
The winding machine provided with the stator winding which is provided in the inner periphery of the bowl-shaped part of the said body facing this field magnet, and comprises an electric motor by the said field magnet. Any one of claims 1 to 5 having a guide portion protruding to form a concave shape in the movable iron core, the braking member being fitted inside the guide portion, and having the braking surface on an inner circumference of the brake drum. The brake device described in is installed,
A gas having a bowl-shaped portion opened to one side on the outside, and having a bottom surface portion where the bowl-shaped portion is coupled to the inside,
A support portion provided inside the bowl-shaped portion of the body to rotatably support the movable iron core;
A main shaft mounted to the bottom surface of the base and protruding toward the opening side of the bowl-shaped portion of the base at the center of the fixed core;
A rotating body supported by the main shaft so as to be rotatable, opening in one side in a bowl shape, and having a bottom surface facing the bottom surface portion of the body;
A drive sheave provided on the bottom surface side of the rotating body,
A magnetic field magnet provided on the opening side of the rotating body and provided on an outer circumference of the brake drum;
The winding machine provided with the stator winding which is provided in the inner periphery of the bowl-shaped part of the said body facing this field magnet, and comprises an electric motor by the said field magnet. The brake device according to any one of claims 1 to 5, wherein the movable iron core is rotatably supported by the fixed iron core and has the braking surface on the outer circumference of the brake drum,
A base having a bowl-shaped portion opened to one side on the outside, and a bottom surface portion where the bowl-shaped portion is joined to the inside,
A brake mounting portion provided outside the bowl-shaped portion of the body and for mounting the fixed iron core;
A main shaft provided at the center of the bottom surface portion of the base so as to protrude to the opening side of the bowl-shaped portion of the base;
A rotating body supported by the main shaft so as to be rotatable, opening in one side in a bowl shape, and having a bottom surface facing the bottom surface portion of the body;
A drive sheave provided on the bottom surface side of the rotating body,
A magnetic field magnet provided on the opening side of the rotating body and provided on an outer circumference of the brake drum;
The winding machine provided with the stator winding which is provided in the inner periphery of the bowl-shaped part of the said body facing this field magnet, and comprises an electric motor by the said field magnet.
KR1020107006530A 2007-10-02 2007-10-02 Hoist for elevator and brake system KR101201027B1 (en)

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PCT/JP2007/069243 WO2009044450A1 (en) 2007-10-02 2007-10-02 Hoist for elevator and brake system

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KR20100051111A true KR20100051111A (en) 2010-05-14
KR101201027B1 KR101201027B1 (en) 2012-11-14

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KR (1) KR101201027B1 (en)
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JP5354013B2 (en) * 2009-07-07 2013-11-27 三菱電機株式会社 Braking device for elevator hoisting machine
WO2011099123A1 (en) * 2010-02-10 2011-08-18 三菱電機株式会社 Brake device for hoist for elevator
JP5470290B2 (en) * 2011-01-31 2014-04-16 株式会社日立製作所 Elevator hoisting machine and elevator device

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JPS426835Y1 (en) * 1960-04-26 1967-03-30
JPH03109627U (en) * 1990-02-23 1991-11-11
JP2000143131A (en) * 1998-11-06 2000-05-23 Mitsubishi Electric Corp Braking device for elevator
KR100498674B1 (en) * 2001-06-29 2005-07-01 미쓰비시덴키 가부시키가이샤 Elevator hoist and elevat0r device
KR100623168B1 (en) * 2002-09-12 2006-09-19 미쓰비시덴키 가부시키가이샤 Brake device of elevator hoist
WO2004050527A1 (en) * 2002-12-04 2004-06-17 Mitsubishi Denki Kabushiki Kaisha Brake mechanism for hoist
CN100369798C (en) 2003-08-21 2008-02-20 三菱电机株式会社 Thin hoist for elevator
WO2005077807A1 (en) * 2004-02-16 2005-08-25 Mitsubishi Denki Kabushiki Kaisha Brake device for elevator hoist

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EP2206674A1 (en) 2010-07-14
CN101815666B (en) 2012-11-21
EP2206674B1 (en) 2014-09-17
JPWO2009044450A1 (en) 2011-01-27
KR101201027B1 (en) 2012-11-14
CN101815666A (en) 2010-08-25
JP5471445B2 (en) 2014-04-16
EP2206674A4 (en) 2013-12-11

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