JP7457910B1 - elevator - Google Patents

Abstract

[Problem] To construct a car vertical vibration suppression device at low cost. [Solution] The elevator according to the present invention is an elevator comprising a guide rail 20 installed in a hoistway, and a car that ascends and descends in the hoistway while being guided by a roller guide type guide body 32 along the guide rail 20, and the car vertical vibration suppression device comprises a braking force generating unit that is provided coaxially with the roller 326 in the guide body 32 and that applies a braking force to the roller 326, and is made up of a magnetic brake, magnetic coupling or mechanical coupling. These are magnetic or mechanical units that do not use electricity. This eliminates the need for electronic components such as sensors, hardware and software related to the control unit, and electrical wiring, making it possible to construct a car vertical vibration suppression device at low cost. [Selected Figure] Figure 3

Description

The present invention relates to an elevator in which a car suspended from a rope moves up and down in a hoistway.

In this type of elevator, when a passenger boards the car after the car has stopped at a floor, the rope suspending the car expands and contracts due to the weight of the passenger, causing the car to shake up and down, causing fluffy vibrations (hereinafter referred to as "fluffy vibrations") throughout the car. , this is called "longitudinal vibration"). The problem in the past has been how to suppress the longitudinal vibration of the car, which passengers find uncomfortable.

In the elevator of Patent Document 1, the guide body provided at a predetermined location of the car and guided by the guide rail is a roller guide type, and when a sensor detects that longitudinal vibration has occurred in the car, power is applied to the electromagnetic brake. This is intended to apply braking force to the rollers of the guide body, generate frictional force between the rollers and the guide rail, and suppress longitudinal vibration of the car.

Japanese Patent Application Publication No. 2003-104655

However, the car longitudinal vibration suppressing device of Patent Document 1 requires electronic components such as sensors, hardware and software related to a control section, and electrical wiring, which poses a problem in that it requires a certain amount of cost.

Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to construct a longitudinal vibration suppressing device for a car at low cost.

The elevator according to the present invention comprises:
An elevator comprising a guide rail installed in a hoistway, and a car that moves up and down in the hoistway while being guided by a roller guide type guide body on the guide rail,
The roller guide type guide body is
A base as a fixed part;
The rollers of the roller guide,
an arm that is swingably attached to the base and that rotatably supports the roller from one side;
an extension portion that is a part of the base, faces the roller with a gap therebetween, and has an arc-shaped guide portion centered on the swing center of the arm;
The elevator is configured as a car vertical vibration suppression device having a fixed body that slidably engages with the guide portion of the extension portion and a rotating body that is attached coaxially with the roller on the other side of the roller, and is equipped with a braking force generating unit consisting of a magnetic brake or magnetic coupling that applies a braking force to the roller.

Moreover, another elevator according to the present invention is
An elevator comprising a guide rail installed in a hoistway, and a car in which a roller guide type guide body moves up and down in the hoistway while being guided by the guide rail,
The roller guide type guide body is
A base as a fixed part,
roller guide rollers,
an arm that is swingably attached to the base and rotatably cantilevers the roller from one side;
an extension part that is a part of the base, faces the roller with a space therebetween, and has an arc-shaped guide part centered on the swing center of the arm;
As a longitudinal vibration suppression device for a car , it is configured with a fixed body that slidably engages with a guide part of an extension part, and a rotating body that is attached coaxially with the roller on the other side of the roller, and applies braking force to the roller. This is an elevator equipped with a braking force generating section consisting of a mechanical coupling that applies braking force.

Here, as one aspect of the elevator according to the present invention,
A roller guide type guide body has a pair of guide surface contact portions that contact each of the two guide surfaces located in the thickness direction of the guide rail, and a portion between the tip edges in the width direction of the two guide surfaces of the guide rail. and a tip surface abutting part that comes into contact with the tip surface located at,
The braking force generating section may be provided with respect to the roller of the tip surface contacting section.

Further, as one aspect of the elevator according to the present invention,
The guide part of the extension part is an arc-shaped groove centered on the swing center of the arm,
The fixed body of the braking force generating part has a section having a cross-sectional shape in which the dimension in the tangential direction of the groove is larger than the width of the groove, and by being inserted into the groove at this section, it is restrained by the groove and cannot rotate. It is possible to move within the groove as the arm swings in this state.
The following configuration can be adopted.

According to the present invention, a magnetic or mechanical braking force generating section that does not use electricity is used as a longitudinal vibration suppression device for a car. Therefore, according to the present invention, electronic components such as sensors, hardware and software related to the control section, and electrical wiring are unnecessary, and the longitudinal vibration suppressing device for a car can be constructed at low cost.

FIG. 1 is a schematic perspective view of an elevator according to this embodiment. FIG. 2(a) is a plan view of a guide body included in an elevator car. FIG. 2(b) is a front view of the guide body. FIG. 3(a) is a plan view of a guide body to which a braking portion is added. FIG. 3(b) is a front view of the guide body to which the brake part is added. Fig. 4(a) is a vertical cross-sectional view of a magnetic brake, which is an example of a braking force generating section that is a main component of the braking section, and Fig. 4(b) is a vertical cross-sectional view of a magnetic coupling, which is another example of a braking force generating section. FIG. 5(a) is a longitudinal sectional view of a mechanical coupling which is still another example of the braking force generating section. FIG. 5(b) is an explanatory diagram regarding the operation of the braking force generating section (the upper diagram in FIG. 5(b) is a diagram related to one of the left and right guide bodies; The lower figure is a figure related to either the left or right guide body.

The elevator according to this embodiment will be described below.

<Overall configuration of elevator>
As shown in FIG. 1, the elevator 1 includes a hoistway 2, a car 3, and a drive mechanism 4 for the car 3. The hoistway 2 extends in the vertical direction within a multi-story building. The car 3 moves up and down within the hoistway 2 by driving the drive mechanism 4, and stops at a designated floor when the drive mechanism 4 stops driving.

Guide bodies 32 are attached to the left and right ends of the upper part and the left and right ends of the lower part of the car frame 31 of the car 3. Inside the hoistway 2, a pair of guide rails 20, 20 extending vertically on both sides of the car 3 are arranged. The car 3 can move up and down within the hoistway 2 while being guided by a pair of guide rails 20, 20 with four guide bodies 32, . . . on top, bottom, left and right.

The car 3 includes a car door 34. The car door 34 moves laterally to open and close the front opening (entrance/exit) of the car 3 to allow people to get on and off the car. The car door 34 has two types: a double door type and a single door type.

On the other hand, the landing 25 on each floor includes a landing door 27. The landing door 27 moves laterally to open and close the opening in the three-sided frame 26 to allow people to get on and off. The landing door 27 also has a double-opening type and a single-opening type, corresponding to the car door 34. The landing door 27 is normally closed and is opened and closed following the opening and closing operations of the car door 34 of the car 3 stopped on the floor.

The drive mechanism 4 includes a car sheave 40, a hoist 41, a counterweight 42, a counterweight sheave 43, and a main rope 44. A sheave is a sheave. As the drive sheave of the hoist 41 is rotationally driven, the main rope 44 travels, and the car 3 to which the car sheave 40 is attached moves up and down within the hoistway 2. Similarly, as the main rope 44 travels, the counterweight 42 to which the counterweight sheave 43 is attached moves up and down within the hoistway 2.

<Configuration of guide rail 20>
As shown in FIG. 2, the guide rail 20 has a T-shape in plan view, and includes a base 200 and a protrusion 201. The base 200 has a strip shape extending in the vertical direction, is arranged parallel to the wall of the hoistway 2, and is attached to the wall of the hoistway 2 using a rail clip 206. The protrusion 201 has a strip shape extending in the vertical direction, is connected to the center of the base 200 at one side, and protrudes from the base 200 in an orthogonal direction.

The protruding portion 201 includes a connecting portion 202 and a guide portion 203. The connecting portion 202 connects the base portion 200 and the guide portion 203. The connecting portion 202 is narrower than the guide portion 203 and becomes a constricted portion at the protruding portion 201 . The guide portion 203 is in sliding contact with the guide body 32 and guides the guide body 32 so as to move linearly in the vertical direction. The guide portion 203 includes two guide surfaces 204 , 204 and a tip surface 205 . The two guide surfaces 204, 204 are surfaces located in the thickness direction of the guide portion 203, and are parallel or face each other in a tapered shape with a narrower width on the tip side. The tip surface 205 is a surface located between the widthwise tip edges of the two guide surfaces 204, 204, and is a flat surface or a curved surface such as an arcuate surface.

<Configuration of Guide Body 32>
The guide body 32 is of a roller guide type and includes a base 320, a pair of guide surface contact portions 321, 321, and a tip surface contact portion 325.

The base 320 is attached to the upper left and right ends of the car frame 31 of the car 3 and the lower left and right ends of the car frame 31 of the car 3, either directly or indirectly via a mounting member such as a bracket. The base 320 is a fixed part of the guide body 32. The base 320 includes an extending portion 320a that extends upward (or downward if the guide body 32 is mounted upside down) at a location facing the distal end surface 205 of the guide rail 20 with a gap therebetween.

The guide surface contact portion 321 includes a roller 322 and an arm 323. The roller 322 is arranged such that its rotating surface runs along the longitudinal direction of the guide rail 20 and comes into contact with the guide surface 204 of the guide rail 20 . Arm 323 rotatably supports roller 322. The arm 323 has a cantilever structure that supports the roller 322 from one side of the roller 322. The base end of the arm 323 is rotatably attached to the base 320. Thereby, the roller 322 and the arm 323 can swing around the base end of the arm 323. A tension coil spring 324 is interposed between the arm 323 and the extension portion 320a of the base 320. Alternatively, a torsion coil spring is interposed at the base end of the arm 323. As a result, the arm 323 is urged toward the guide surface 204 of the guide rail 20, and the roller 322 is pressed against the guide surface 204 by elastic force. The guide surface contact portion 321 is a movable portion of the guide body 32.

The tip surface contact portion 325 includes a roller 326 and an arm 327. The roller 326 is arranged such that its rotating surface runs along the longitudinal direction of the guide rail 20 and comes into contact with the tip end surface 205 of the guide rail 20 . Arm 327 rotatably supports roller 326. The arm 327 has a cantilever structure that supports the roller 326 from one side of the roller 326. The base end of the arm 327 is rotatably attached to the base 320. This allows the roller 326 and the arm 327 to swing around the base end of the arm 327. A tension coil spring 328 is interposed between the arm 327 and the extension portion 320a of the base 320. Alternatively, a torsion coil spring is interposed at the base end of the arm 327. As a result, the arm 327 is urged toward the tip surface 205 of the guide rail 20, and the roller 326 is pressed against the tip surface 205 by elastic force. The tip surface contact portion 325 is a movable portion of the guide body 32.

In this way, the guide body 32 includes a plurality of rollers 322, 322, 326 that come into contact with the two guide surfaces 204, 204 and the three surfaces of the tip surface 205 of the guide rail 20, and guides while rotating these rollers. Move the rail 20.

<Configuration of braking unit 330>
The guide body 32 includes a braking section. FIG. 3 is a diagram in which a braking section 330 is added to the guide body 32 of FIG. 2. As shown in FIG. The braking unit 330 is provided on at least one of the four guide bodies 32 on the upper, lower, left and right sides. Preferably, the braking unit 330 is provided on at least two guide bodies 32, 32, one of the upper and lower left guide bodies 32 and one of the upper and lower right guide bodies 32. More preferably, the braking section 330 is provided on all the guide bodies 32, . . . .

The braking unit 330 includes a bracket 331 and a braking force generating unit 332. The bracket 331 is attached to the base 320. The bracket 331 is a part of the base 320 and is a fixed part of the guide body 32. The bracket 331 includes an extension 331a that extends upward (or downward if the guide body 32 is attached upside down) at a location facing the roller 326 of the tip surface abutment portion 325 with a gap therebetween. The braking force generating unit 332 is attached coaxially with the roller 326 to the other side of the roller 326 (the surface opposite to the one side surface supported at one end by the arm 327) and is disposed between the roller 326 and the extension 331a of the bracket 331.

The braking force generating portion 332 has a shape smaller than the diameter of the roller 326 of the tip surface contact portion 325. More specifically, the braking force generating section 332 is a circular body having a diameter smaller than the diameter of the roller 326. The braking force generating section 332 is provided coaxially with the roller 326. The braking force generating section 332 includes a fixed body 333 and a rotating body 334.

The fixed body 333 includes a shaft 333a coaxial with the central axis. The shaft 333a is inserted into a groove 331b formed in the extending portion 331a of the bracket 331, and the groove 331b is centered around the swing center of the arm 327 of the distal end surface contacting portion 325 (the base end of the arm 327). At least a portion of the shaft 333a that is inserted into the groove 331b has a cross-sectional shape in which the dimension in the tangential direction of the groove 331b is larger than the width of the groove 331b. That is, at least a portion of the shaft 333a that is inserted into the groove 331b has a non-circular cross-sectional shape. As a result, the shaft 333a can move within the groove 331b as the arm 327 swings, and is restrained by the groove 331b and cannot rotate. Alternatively, the fixed body 333 may be slidably engaged with a guide portion formed on the extending portion 331a of the bracket 331. Alternatively, instead of the bracket 331, an arm that swings coaxially with the arm 327 of the distal end surface contact portion 325 may be provided, and the fixed body 333 may be supported by the arm in a non-rotatable manner. As a result, the fixed body 333 is movably and non-rotatably supported by the bracket 331 or the arm as the arm 327 swings without inhibiting the swing of the arm 327.

The rotating body 334 is coaxial with the fixed body 333 and is rotatably supported by the fixed body 333. The rotating body 334 includes a shaft 334a that is coaxial with the central axis, that is, coaxial with the shaft 333a of the fixed body 333. The shaft 334a is coaxially attached (fixed) to the roller 326 on the other side of the roller 326 (the opposite side to the one side supported by the arm 327 in a cantilever manner) of the tip surface contact portion 325, and is integral with the roller 326. be converted into

<Specific example 1 of braking force generation section 332>
As shown in FIG. 4A, the braking force generating section 332 is, for example, a magnetic brake, which is a magnetic unit that does not use electricity. In the magnetic brake, one of the fixed body 333 and the rotary body 334 is provided with a hysteresis material 336, and the other is provided with magnets 335, 335 so as to sandwich the hysteresis material 336 without contact. The magnetic brake constantly applies a braking force (a load on the rotation of the roller 326) to the rotating body 334, that is, the roller 326 of the distal end surface abutting portion 325 that is integrated therewith, due to a hysteresis effect. Note that the configuration shown in FIG. 4(a) is an example of the configuration of the magnetic brake. The magnetic brake may have various known configurations.

<Specific example 2 of braking force generation section 332>
As shown in FIG. 4B, the braking force generating section 332 is, as another example, a magnetic unit that does not use electricity, or a magnetic coupling. In the magnetic coupling, the fixed body 333 and the rotary body 334 are provided with magnets 337 and 338 on opposing surfaces without contact. The magnetic coupling constantly applies a braking force (a load on the rotation of the roller 326) to the rotating body 334, that is, the roller 326 of the tip surface contact portion 325 that is integrated with the rotary body 334 due to the attractive force between the magnets 337 and 338. It is something to do. Note that the configuration shown in FIG. 4(b) is an example of a magnetic coupling configuration. The magnetic coupling may have various known configurations.

<Specific example 3 of braking force generation section 332>
As shown in FIG. 5A, the braking force generating section 332 is, as another example, a mechanical unit that does not use electricity, a mechanical coupling (torque limiter). In the mechanical coupling, either the fixed body 333 or the rotary body 334 includes a ball or pin 339 that is elastically biased toward the other, and the other partially receives the ball or pin 339. A recessed portion 333b is provided. In the mechanical coupling, when the ball or pin 339 engages in the recess 333b, a braking force (a load on the rotation of the roller 326) is applied to the roller 326 of the rotary body 334, that is, the distal end surface contact portion 325 that is integral with the rotating body 334. It is intended to give. However, when the rotational torque of the rotating body 334 exceeds a predetermined limit value and the ball or pin 339 comes off the recess 333b against the elastic bias, the braking force is released. Note that the configuration shown in FIG. 5(a) is an example of a mechanical coupling configuration. As the mechanical coupling, various known configurations can be employed.

The configuration of the elevator 1 according to this embodiment is as described above. A braking unit 330 is added to the guide body 32 to constitute a longitudinal vibration suppressing device for the car 3. When the car 3 is stopped on the floor, the braking force generated by the braking force generating section 332 is applied to the roller 326 of the guide body 32. By applying a braking force to the roller 326, the roller 326 becomes in a state where it cannot rotate (locked state) or a state where it rotates but has a large rotational resistance, and a frictional force is generated between the roller 326 and the guide rail 20. Occur. This frictional force becomes a load (resistance force) against the movement of the car 3. As a result, even if longitudinal vibration occurs or is about to occur in the car 3, the longitudinal vibration of the car 3 is suppressed by the frictional force based on the braking force.

Note that even if the roller 326 becomes unrotatable (locked state) due to a large braking force, as shown in FIG. The drag force was due to the lateral displacement of the car 3 that occurs at the timing when the car 3 starts running or at a later timing, causing the roller 326 of the guide body 32 to instantaneously receive a vertical force of a magnitude that exceeds the limit value Nb. A drag force is generated, and the frictional force between the roller 326 and the guide rail 20 exceeds the holding force of the braking force generating section 332, giving an opportunity for the roller 326 to start rotating. When the roller 326 begins to rotate, the braking force is reduced in the braking force generating section 332 consisting of a magnetic brake or magnetic coupling, and the braking force is released in the braking force generating section 332 consisting of a mechanical coupling. (will disappear). As a result, while the car 3 is running, the rollers 326 are in a rotatable state and roll on the guide rails 20.

As described above, according to the elevator 1 according to the present embodiment, the magnetic or mechanical braking force generation section 332 that does not use electricity is used as the longitudinal vibration suppression device for the car 3. Therefore, according to the elevator 1 according to the present embodiment, electronic components such as sensors, hardware and software related to the control unit, and electrical wiring are unnecessary, and the longitudinal vibration suppressing device for the car 3 can be configured at low cost. Can be done.

Further, according to the elevator 1 according to the present embodiment, the braking force generation section 332 is provided to the roller 326 of the tip surface contact section 325. More specifically, the braking force generating section 332 is arranged between the roller 326 and the extending section 331a of the bracket 331. This location is a location where there is a relatively large space in the guide body 32. Therefore, according to the elevator 1 according to the present embodiment, a space for arranging the braking force generating section 332 can be secured, and the longitudinal vibration suppressing device for the car 3 can be configured compactly.

Note that the present invention is not limited to the above embodiments, and various changes can be made without departing from the gist of the present invention.

In the embodiment described above, the guide surface abutting section 321 and the distal end surface abutting section 325 swing due to elastic bias and become movable parts of the guide body 32. However, the present invention is not limited thereto. In one or both of the guide surface contact portion and the tip surface contact portion, the roller may have a rotation shaft fixed and not displaced.

Further, in the embodiment described above, the braking force generating section 332 is provided to the distal end surface abutting section 325. However, the present invention is not limited thereto. The braking force generating section is provided not for the tip surface contact section but for the guide surface contact section, or is provided for the guide surface contact section in addition to the tip surface contact section. Good too.

DESCRIPTION OF SYMBOLS 1...Elevator, 2...Hoistway, 20...Guide rail, 200...Base, 201...Protrusion, 202...Connection part, 203...Guide part, 204...Guide surface, 205...Tip surface, 206...Rail clip, 25... Landing area, 26... Three-sided frame, 27... Landing door, 3... Car, 31... Car frame, 32... Guide body, 320... Base, 320a... Extension part, 321... Guide surface contact part, 322... Roller, 323... Arm , 324... Tension coil spring (tension spring), 325... Tip surface contact part, 326... Roller, 327... Arm, 328... Tension coil spring (tension spring), 330... Braking part, 331... Bracket, 331a... Extension part , 331b...groove, 332...braking force generating part, 333...fixed body, 333a...shaft, 333b...recess, 334...rotating body, 334a...shaft, 335...magnet, 336...hysteresis material, 337, 338...magnet, 339 ... Ball, 34 ... Car door, 4 ... Drive mechanism, 40 ... Car sheave, 41 ... Hoisting machine, 42 ... Counterweight, 43 ... Counterweight sheave, 44 ... Main rope

Claims (4)

An elevator comprising a guide rail installed in a hoistway, and a car in which a roller guide type guide body moves up and down in the hoistway while being guided by the guide rail,
The roller guide type guide body is
A base as a fixed part,
The roller of the roller guide,
an arm that is swingably attached to the base and rotatably cantilevers the roller from one side;
an extension part that is a part of the base, faces the roller with a space therebetween, and includes an arc-shaped guide part centered on the swing center of the arm;
As a longitudinal vibration suppression device for a car , it is configured with a fixed body that slidably engages with a guide part of an extension part, and a rotating body that is attached coaxially with the roller on the other side of the roller, and applies braking force to the roller. An elevator equipped with a braking force generating section consisting of a magnetic brake or magnetic coupling. An elevator comprising a guide rail installed in a hoistway, and a car in which a roller guide type guide body moves up and down in the hoistway while being guided by the guide rail,
The roller guide type guide body is
A base as a fixed part,
roller guide rollers,
an arm that is swingably attached to the base and rotatably cantilevers the roller from one side;
an extension part that is a part of the base, faces the roller with a space therebetween, and includes an arc-shaped guide part centered on the swing center of the arm;
As a longitudinal vibration suppression device for a car , it is configured with a fixed body that slidably engages with a guide part of an extension part, and a rotating body that is attached coaxially with the roller on the other side of the roller, and applies braking force to the roller. An elevator equipped with a braking force generating section consisting of a mechanical coupling that applies braking force. A roller guide type guide body has a pair of guide surface contact portions that contact each of the two guide surfaces located in the thickness direction of the guide rail, and a portion between the tip edges in the width direction of the two guide surfaces of the guide rail. and a tip surface abutting portion that comes into contact with the tip surface located at,
The elevator according to claim 1 or 2, wherein the braking force generation section is provided for the roller of the tip surface contact section. The guide part of the extension part is an arc-shaped groove centered on the swing center of the arm,
The fixed body of the braking force generating part has a section having a cross-sectional shape in which the dimension in the tangential direction of the groove is larger than the width of the groove, and by being inserted into the groove at this section, it is restrained by the groove and cannot rotate. It is possible to move within the groove as the arm swings in this state.
3. An elevator according to claim 1 or 2.

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