JP7100303B1 - Elevator and vibration detector - Google Patents

Abstract

An elevator capable of reliably detecting abnormal vibrations of a car is provided. An elevator (1) includes a car (2) and a plurality of vibration detectors (4) attached to the car (2). The vibration detector (4) includes a spring body, a weight body attached to the spring body, and a and a detection unit that detects vibration, and the natural frequencies of the plurality of vibration detection devices are different from each other. As a result, the vibration frequency range that can be detected by the plurality of motion detectors 4 can be widened, so abnormal vibrations of the car 2 can be reliably detected. [Selection drawing] Fig. 2

Description

The present application relates to elevators and vibration detectors.

Conventionally, for example, an elevator includes a car and a vibration detection device attached to the car (for example, Patent Document 1). The vibration detection device includes a leaf spring, a weight body attached to the leaf spring, and a detection unit for detecting the vibration of the weight body. Then, for example, the vibration of the car caused by the person riding the car (hereinafter referred to as "abnormal vibration") can be detected by the detection unit.

By the way, when the frequency of the car is close to the natural frequency of the vibration detection device, the leaf spring is deformed and the weight body vibrates, so that the detection unit can detect the vibration of the weight body. can. However, when the frequency of the car is a frequency far from the natural frequency of the vibration detection device, the leaf spring does not deform and the weight does not vibrate, so the detection unit detects the vibration of the weight. Can't.

Jitsukaisho 60-21934

Therefore, the challenge is to provide an elevator that can reliably detect abnormal vibration of the car.

The elevator includes a cage and a plurality of vibration detection devices attached to the cage, and the vibration detection device detects a spring body, a weight body attached to the spring body, and vibration of the weight body. The natural frequencies of the plurality of vibration detection devices are different from each other.

Further, in the elevator, the spring body may be a string-wound spring arranged so as to be elastically deformed in the vertical direction.

Further, in the elevator, the vibration detection device further includes a guide surface in contact with the weight body in order to guide the weight body in the vertical direction, and the guide surface is one with respect to the vibration detection device. It may be configured to be provided only.

Further, in the elevator, the weight of the portion of the weight body arranged below the guide surface is larger than the weight of the portion of the weight body arranged above the guide surface. It may be heavy.

Further, in the elevator, the vibration detection device further includes a guide surface for guiding the weight body in the vertical direction, and the weight body includes a guided surface to be guided in contact with the guide surface. The guide surface may be arranged inside the string winding spring in the vertical view.

Further, the vibration detection device is a vibration detection device attached to the car of the elevator, and includes a spring body, a weight body attached to the spring body, and a detection unit for detecting the vibration of the weight body. The spring body may be configured to be a string-wound spring arranged so as to be elastically deformed in the vertical direction.

FIG. 1 is a schematic diagram of an elevator according to an embodiment. FIG. 2 is a perspective view of the car according to the embodiment. FIG. 3 is a front view of the vibration detection device according to the embodiment. FIG. 4 is a vertical sectional view of the vibration detection device according to the same embodiment. FIG. 5 is an enlarged cross-sectional view of a main part of the VV line of FIG. FIG. 6 is a diagram showing the relationship between the frequency and the amplitude of the vibration detection device according to the same embodiment. FIG. 7 is a front view of a main part of the vibration detection device according to another embodiment. FIG. 8 is an enlarged cross-sectional view of a main part of line VIII-VIII of FIG.

Hereinafter, one embodiment of the elevator will be described with reference to FIGS. 1 to 6. In each drawing (the same applies to FIGS. 7 and 8), the dimensional ratio of the drawings does not always match the actual dimensional ratio, and the dimensional ratios between the drawings do not necessarily match. do not have.

As shown in FIG. 1, the elevator 1 drives a car 2 for a user to ride, a car rope 1a connected to the car 2, a balance weight 1b connected to the car rope 1a, and a car rope 1a. It is equipped with a hoisting machine 1c that runs the basket 2. The hoisting machine 1c may include, for example, a sheave 1d around which the car rope 1a is wound, and a drive source (not shown and numbered) for rotating the sheave 1d.

The elevator 1 according to the present embodiment has a configuration in which the hoisting machine 1c is arranged inside the machine room X2 provided in the upper part of the hoistway X1, but is not limited to such a configuration. For example, the elevator 1 may be configured such that the hoisting machine 1c is arranged inside the hoistway X1.

Further, in the present embodiment, one end of the car rope 1a is fixed to the car 2, and the other end of the car rope 1a is fixed to the balance weight 1b, but the configuration is limited to such a configuration. I can't. For example, both ends of the car rope 1a are fixed to the upper part or the lower part of the hoistway X1, respectively, and the car rope 1a is wound around the sheave of the car 2 and the sheave of the counterweight 1b, respectively, so that the car rope 1a becomes the car 2 And, it may be configured that it is connected to the balance weight 1b respectively.

Further, the elevator 1 according to the present embodiment has a configuration of a rope type drive system, but is not limited to such a configuration. For example, the elevator 1 may be configured to have a hydraulic drive system, or may have a configuration of a linear motor drive system.

The elevator 1 is, for example, a car rail 1e that guides the car 2, a weight rail 1f that guides the balance weight 1b, a control unit 1g that controls each part of the elevator 1, and a speed governor that detects the traveling speed of the car 2. It may be equipped with a machine 3. The car 2 may include, for example, a stop device 2a for stopping the car 2 by sandwiching the car rail 1e, and a transmission unit 2b for transmitting the operation of the speed governor 3 to the stop device 2a.

The speed governor 3 may include, for example, an endless annular governor rope 3a connected to the car 2, governor sheaves 3b and 3b hung on the governor rope 3a, and a grip portion 3c for gripping the governor rope 3a. As a result, when the speed of the car 2 exceeds the set speed, the grip portion 3c grips the governor rope 3a and the traveling of the governor rope 3a is stopped, so that the stop device 2a operates.

By the way, for example, when a person flies or runs inside the car 2, abnormal vibration may occur in the car 2. As a result, the speed governor 3 erroneously detects the traveling speed of the car 2 (for example, detects that the speed is higher than the actual speed), so that the stop device 2a may malfunction and stop the car 2. ..

Therefore, as shown in FIG. 2, the elevator 1 includes a vibration detection device 4 attached to the car 2. Then, when the vibration detection device 4 detects the abnormal vibration of the car 2, for example, the traveling speed of the car 2 is decelerated by the control unit 1g. As a result, it is possible to prevent the speed governor 3 from erroneously detecting the traveling speed of the car 2.

For example, as in the present embodiment, a plurality of vibration detection devices 4 may be provided and arranged so as to be lined up on the upper part of the car 2. The number of vibration detection devices 4 is not particularly limited, but in the present embodiment, the elevator 1 includes two vibration detection devices 4.

As shown in FIGS. 3 and 4, the vibration detection device 4 may include, for example, a main body 5 fixed to the car 2. Then, the vibration detection device 4 includes a spring body 6 attached to the main body 5, a weight body 7 attached to the spring body 6 and moved with respect to the main body 5 by elastic deformation of the spring body 6, and the weight body 7. It is provided with a detection unit 8 for detecting vibration.

The spring body 6 is a string winding spring 6a. The string winding spring 6a is arranged so as to be elastically deformed in the vertical direction D3, that is, to be expanded and contracted in the vertical direction D3. Specifically, the axial direction of the string winding spring 6a is parallel to the vertical direction D3 (including not only completely parallel but also substantially parallel with an inclination of 5 ° or less with respect to the vertical direction D3. The same shall apply hereinafter). ..

Then, for example, when the spring body 6 is a strip-shaped leaf spring attached to the main body 5 so as to be curved and deformed as in Patent Document 1, the weight body 7 vibrates in the locus of an arc. In the present embodiment, since the spring body 6 is a chord-wound spring 6a that elastically deforms in the vertical direction D3, the weight body 7 vibrates in a linear locus parallel to the vertical direction D3. As a result, the vibration direction D3 of the weight body 7 becomes the same as the vibration direction D3 of the car 2, so that, for example, the vibration of the car 2 can be accurately detected.

The abnormal vibration of the car 2 may include not only the shaking in the vertical direction D3 but also the shaking that rotates about the lateral direction. In such a case, for example, there is a directionality in the ease of elastic deformation of the spring body 6 (for example, in a strip-shaped leaf spring, the ease of elastic deformation differs between the longitudinal direction and the lateral direction). Then, the direction of the rotating sway affects the magnitude of the elastic deformation of the spring body 6.

On the other hand, in the present embodiment, since the spring body 6 is a chord-wound spring 6a that elastically deforms in the vertical direction D3, it is possible to suppress the ease of elastic deformation of the spring body 6 from being directional. can. Therefore, for example, when the abnormal vibration of the car 2 includes a sway that rotates about the lateral direction, it is suppressed that the direction of the rotating sway affects the magnitude of the elastic deformation of the spring body 6. can do.

The abnormal vibration of the car 2 is mainly determined by the spring constant of the car rope 1a and the weight of the car 2 (the weight including the person inside the car 2). In general, the abnormal vibration of the car 2 is often 2.0 Hz to 5.0 Hz (particularly 2.5 Hz to 4.0 Hz). The natural frequency of the vibration detection device 4 determined by the spring constant of the spring body 6 and the weight of the weight body 7 is preferably within the range.

Therefore, although not particularly limited, the spring constant of the spring body 6 is set to, for example, 0.1 N / mm to 0.5 N / mm in consideration of the size of the vibration detection device 4 (weight of the weight body 7). It can also be, for example, preferably 0.2 N / mm to 0.4 N / mm. The spring body 6 having such a small spring constant is a soft spring body 6 that is easily elastically deformed.

The main body 5 is, for example, as in the present embodiment, a base portion 5a fixed to the car 2, a lower mounting portion 5b arranged above the base portion 5a and attached to the lower end portion of the string winding spring 6a, and upper and lower parts. It may be provided with columns 5c and 5c extending along the direction D3 and fixed to the base portion 5a and the lower mounting portion 5b, respectively. Further, the main body 5 may include, for example, a detection support portion 5d that supports the detection unit 8, and the detection support portion 5d may be fixed to the pillars 5c and 5c.

The weight body 7 includes, for example, an upper mounting portion 7a attached to the upper end portion of the string winding spring 6a, a weight portion 7b arranged below the upper mounting portion 7a, and an upper mounting portion 7a as in the present embodiment. It may be provided with a connecting portion 7c for connecting the weight portion 7b. Then, for example, the connecting portion 7c may extend along the vertical direction D3, and the upper portion of the connecting portion 7c may be arranged inside the string winding spring 6a.

The upper mounting portion 7a may include, for example, an upper holding portion 7d for holding the upper end portion of the string winding spring 6a, and the lower mounting portion 5b may include, for example, a lower holding portion for holding the lower end portion of the string winding spring 6a. It may be provided with 5e. The upper holding portion 7d may be formed in a concave shape so that the upper end portion of the string winding spring 6a can be fitted, for example, and the lower holding portion 5e may be fitted, for example, with the lower end portion of the string winding spring 6a. It may be formed in a concave shape so as to be.

The weight portion 7b may be provided with a plurality of detachable weight pieces 7e at the connection portion 7c, for example, as in the present embodiment. Thereby, for example, the weight of the weight portion 7b can be changed by changing the number of the weight pieces 7e, so that the natural frequency of the vibration detection device 4 can be changed.

Further, the main body 5 is provided with a guide surface 5f that guides the weight body 7 in the vertical direction D3, and the weight body 7 is provided with a guided surface 7f that is in contact with the guide surface 5f and is guided. Then, for example, the guide surface 5f may extend in the vertical direction D3, and the guided surface 7f may slide on the guide surface 5f.

For example, as in the present embodiment, the guide surface 5f is formed by the inner peripheral surface of the hole into which the connecting portion 7c of the weight body 7 is inserted, and the guided surface 7f is formed by the outer peripheral surface of the connecting portion 7c. It may be configured that it is done. It is preferable that the guide surface 5f has a smaller coefficient of friction with respect to the guided surface 7f than, for example, other parts of the main body 5.

And only one guide surface 5f is provided for the vibration detection device 4. As a result, when the weight body 7 moves in the vertical direction D3, the weight body 7 is guided in contact with one guide surface 5f, so that one guide surface 5f determines the direction D3 in which the weight body 7 moves. be able to.

Therefore, for example, there is no need for adjustment work to make the guide directions of the plurality of guide surfaces 5f and 5f parallel to each other. Further, for example, it is possible to suppress an increase in the frictional force generated between the guide surface 5f and the weight body 7. Thereby, for example, even for the vibration detection device 4 using the spring body 6 having a small spring constant, the vibration detection device 4 having a desired natural frequency can be configured.

Further, in the weight body 7, the weight of the portion below the guide surface 5f is heavier than the weight of the portion of the weight body 7 above the guide surface 5f. That is, in the present embodiment, the total weight of the lower portion of the connecting portion 7c and the weight portion 7b is heavier than the total weight of the upper portion of the connecting portion 7c and the upper mounting portion 7a. ..

As a result, since the center of gravity of the weight body 7 is arranged below the guide surface 5f, it is possible to prevent the weight body 7 from swinging with the guide surface 5f as a fulcrum. Regardless of the position of the weight body 7 moving in the vertical direction D3, the weight of the lower portion of the weight body 7 is always heavier than the weight of the upper portion of the weight body 7. For example, the weight of the weight portion 7b may be heavier than 50% of the total weight of the weight body 7.

Further, the main body 5 may be provided with a regulating portion 5g that restricts the elastic deformation of the string winding spring 6a in the lateral direction, as in the present embodiment, for example. For example, the pillar 5c is inserted into the holes of the upper mounting portion 7a and the weight portion 7b, and the inner peripheral portion of the holes of the upper mounting portion 7a and the weight portion 7b hits the outer peripheral portion of the pillar 5c, so that the string winding spring 6a is lateral. Elastic deformation in the direction may be restricted. That is, the regulating portion 5g may be composed of the outer peripheral surface of the pillar 5c.

As a result, it is possible to suppress the elastic deformation of the string winding spring 6a in the lateral direction, so that it is possible to suppress the deformation of the string winding spring 6a so as to buckle, for example. When the string winding spring 6a is elastically deformed in the vertical direction D3, the outer peripheral surface of the pillar 5c, which is the restricting portion 5g, is separated from the holes of the upper mounting portion 7a and the weight portion 7b.

The detection unit 8 can adopt, for example, various sensors, and detects that the spring body 6 is deformed and the weight body 7 moves due to the abnormal vibration of the car 2. For example, by detecting that the distance to the weight body 7 (for example, the upper end of the connecting portion 7c) is smaller than the set value, the string winding spring 6a is deformed in the vertical direction D3 to be larger than the threshold value, and the weight body 7 is used. May be detected as vibrating.

The detection unit 8 may detect, for example, the distance (absolute value) from the weight body 7. Further, the position where the detection unit 8 is installed is not particularly limited, and the detection unit 8 may detect, for example, the distance from the string winding spring 6a, or may be attached to, for example, the base portion 5a to form a connection portion. The distance from the lower end of 7c may be detected.

Further, as shown in FIG. 5, the guided surface 7f is arranged inside the string winding spring 6a in the vertical direction D3 view. Specifically, the guided surface 7f is arranged in a region surrounded by the outer peripheral portion 6b of the string winding spring 6a in the vertical direction D3 view. As a result, the frictional force generated between the guide surface 5f and the guided surface 7f in the vertical D3 view is generated near the center of the string winding spring 6a.

Therefore, for example, even if the frictional force varies in the circumferential direction of the guided surface 7f, it is possible to suppress the force applied to the string winding spring 6a in the direction of large inclination with respect to the vertical direction D3. As a result, for example, even for the vibration detection device 4 using the spring body 6 having a small spring constant, the vibration detection device 4 having a desired natural frequency can be configured.

In such a vibration detection device 4, as shown in FIG. 6, when the abnormal vibration of the car 2 has the natural frequencies F1 and F2, the weight body 7 vibrates the most. That is, the amount of movement of the weight body 7 with respect to the reference position (relative amplitudes A1 and A2 of the weight body 7) becomes maximum. Then, as the abnormal vibration of the car 2 moves away from the natural frequencies F1 and F2, the relative amplitudes A1 and A2 of the weight body 7 become smaller.

For example, in the present embodiment, when the relative amplitudes A1 and A2 of the weight body 7 are equal to or higher than the set value S1, the detection unit 8 detects the vibration of the weight body 7. That is, when the abnormal vibration of the car 2 is the detectable frequency (the frequency from the minimum detected frequency F1a, F2a to the maximum detected frequency F1b, F2b), the detection unit 8 has the weight 7 equal to or higher than the set value. Detects vibration of the magnitude of.

By the way, the abnormal vibration of the car 2 is often 2.0 Hz to 5.0 Hz (particularly 2.5 Hz to 4.0 Hz), whereas the detectable frequency of one vibration detection device 4, for example, is high. The range of may be narrow. That is, there are cases where the detectable frequency of one vibration detection device 4 cannot include the entire range of 2.0 Hz to 5.0 Hz.

Therefore, in the present embodiment, since the two vibration detection devices 4 are provided, the first natural frequency F1 of the first vibration detection device 4 becomes the second natural frequency F2 of the second vibration detection device 4. , Different. As a result, the range of the frequencies that can be detected by the first and second vibration detection devices 4 and 4 can be widened, so that the abnormal vibration of the car 2 can be reliably detected.

Although not particularly limited, in the present embodiment, the minimum detected frequency F1a of the first vibration detection device 4 is smaller than 2.0 Hz, and the maximum detected frequency F2b of the second vibration detection device 4 is 5. It is larger than 0.0 Hz. Further, although not particularly limited, in the present embodiment, the maximum detected frequency F1b of the first vibration detection device 4 is larger than the minimum detected frequency F2a of the second vibration detection device 4.

From the above, as in the present embodiment, the elevator 1 includes a car 2 and a plurality of vibration detection devices 4 and 4 attached to the car 2, and the vibration detection device 4 includes a spring body 6 and the above. It is said that the weight body 7 attached to the spring body 6 and the detection unit 8 for detecting the vibration of the weight body 7 are provided, and the natural frequencies F1 and F2 of the plurality of vibration detection devices 4 and 4 are different from each other. The configuration is preferred.

According to such a configuration, since the natural frequencies F1 and F2 of the plurality of vibration detection devices 4 and 4 are different from each other, the frequencies that can be detected by the detection units 8 and 8 of the respective vibration detection devices 4 and 4 are high. The ranges (F1a to F1b, F2a to F2b) are different. Thereby, the range (F1a to F2b) of the frequency that can be detected can be widened by the plurality of vibration detection devices 4 and 4. Therefore, the abnormal vibration of the car 2 can be reliably detected.

Further, as in the present embodiment, the vibration detection device 4 is a vibration detection device 4 attached to the car 2 of the elevator 1, and is a spring body 6, a weight body 7 attached to the spring body 6, and the weight. It is preferable that the spring body 6 includes a detection unit 8 for detecting the vibration of the body 7, and the spring body 6 is a string-wound spring 6a arranged so as to be elastically deformed in the vertical direction D3.

According to such a configuration, the spring body 6 is a string winding spring 6a, and the string winding spring 6a is arranged so as to be elastically deformed in the vertical direction D3. As a result, the weight body 7 vibrates in a linear locus parallel to the vertical direction D3, so that the vibration direction D3 of the weight body 7 can be made the same as the vibration direction D3 of the car 2.

Further, as in the present embodiment, in the elevator 1, the vibration detection device 4 further includes a guide surface 5f in contact with the weight body 7 in order to guide the weight body 7 in the vertical direction D3. It is preferable that only one surface 5f is provided for the vibration detection device 4.

According to such a configuration, when the weight body 7 moves in the vertical direction D3, the weight body 7 is guided in contact with one guide surface 5f. Thereby, one guide surface 5f can determine the direction D3 in which the weight body 7 moves.

Further, as in the present embodiment, in the elevator 1, the weight of the portion of the weight body 7 arranged below the guide surface 5f is from the guide surface 5f of the weight body 7. It is preferable that the weight is heavier than the weight of the portion arranged above.

According to such a configuration, the weight of the weight 7 arranged below the guide surface 5f is heavier than the weight of the weight 7 arranged above the guide surface 5f. The center of gravity of 7 is arranged below the guide surface 5f. As a result, it is possible to prevent the weight body 7 from swinging with the guide surface 5f as a fulcrum.

Further, as in the present embodiment, in the elevator 1, the vibration detection device 4 further includes a guide surface 5f that guides the weight body 7 in the vertical direction D3, and the weight body 7 further includes the guide surface 5f. It is preferable that the guided surface 7f is provided in contact with the guided surface 7f, and the guided surface 7f is arranged inside the string winding spring 6a in the vertical direction D3 view.

According to such a configuration, since the guided surface 7f is arranged inside the string winding spring 6a in the vertical direction D3 view, the frictional force generated between the guided surface 7f and the guide surface 5f is the vertical direction D3. Visually, it occurs inside the string winding spring 6a. As a result, the frictional force generated between the guided surface 7f and the guided surface 5f in the vertical D3 view is generated near the center of the string winding spring 6a.

The elevator 1 and the vibration detection device 4 are not limited to the configuration of the above-described embodiment, and are not limited to the above-mentioned action and effect. It goes without saying that the elevator 1 and the vibration detection device 4 can be modified in various ways without departing from the gist of the present invention. For example, it is of course possible to arbitrarily select one or a plurality of configurations and methods according to the following various modified examples and adopt them in the configurations and methods according to the above-described embodiment.

(1) In the elevator 1 according to the above embodiment, the spring body 6 is a string-wound spring 6a arranged so as to be elastically deformed in the vertical direction D3. However, the elevator 1 is not limited to such a configuration. For example, the spring body 6 may be a leaf spring attached to the main body 5 so as to be curved and deformed.

(2) Further, in the elevator 1 and the vibration detection device 4 according to the above embodiment, only one guide surface 5f is provided for the vibration detection device 4. However, the elevator 1 and the vibration detection device 4 are not limited to such a configuration. For example, a plurality of guide surfaces 5f may be provided for the vibration detection device 4.

(3) Further, in the elevator 1 and the vibration detection device 4 according to the above embodiment, the weight of the portion of the weight body 7 arranged below the guide surface 5f is the weight of the guide surface of the weight body 7. It is heavier than the weight of the portion arranged above 5f. However, the elevator 1 and the vibration detection device 4 are not limited to such a configuration. For example, the weight of the portion of the weight body 7 arranged above the guide surface 5f is heavier than the weight of the portion of the weight body 7 arranged below the guide surface 5f. But it may be.

(4) Further, in the elevator 1 and the vibration detection device 4 according to the above embodiment, the guided surface 7f is arranged only inside the string winding spring 6a in the vertical direction D3. However, the elevator 1 and the vibration detection device 4 are not limited to such a configuration.

For example, the guided surface 7f may be arranged outside the string winding spring 6a in the vertical direction D3. Specifically, the guided surface 7f may be arranged both inside and outside the string winding spring 6a in the vertical direction D3 view, for example, and the string winding spring may be arranged, for example, in the vertical direction D3 view. It may be configured that it is arranged only on the outside of 6a.

(5) Further, in the elevator 1 and the vibration detection device 4 according to the above embodiment, the guide surface 5f extends in the vertical direction D3, and the guided surface 7f slides on the guide surface 5f. .. However, the elevator 1 and the vibration detection device 4 are not limited to such a configuration.

For example, as shown in FIGS. 7 and 8, the vibration detection device 4 may include a plurality of rotating bodies 9, and the guide surface 9a may be configured to be composed of an outer peripheral surface of the rotating body 9. According to such a configuration, the rotating body 9 rotates as the weight body 7, that is, the guided surface 7f moves in the vertical direction D3, and therefore friction between the guided surface 7f and the guide surface 9a. It is possible to suppress the generation of force.

(6) Further, as in the present embodiment, for example, only one vibration detection device 4 which is a string winding spring 6a in which the spring body 6 is arranged so as to be elastically deformed in the vertical direction D3 is attached to the car 2. May be good.

1 ... Elevator, 1a ... Car rope, 1b ... Balance weight, 1c ... Hoisting machine, 1d ... Tail wheel, 1e ... Car rail, 1f ... Weight rail, 1g ... Control unit, 2 ... Car, 2a ... Stop device, 2b ... Transmitter, 3 ... Governor, 3a ... Governor rope, 3b ... Governor sheave, 3c ... Grip, 4 ... Vibration detector, 5 ... Main body, 5a ... Base, 5b ... Bottom mounting, 5c ... Pillar, 5d ... Detection support part, 5e ... Lower holding part, 5f ... Guide surface, 5g ... Regulatory part, 6 ... Spring body, 6a ... String winding spring, 6b ... Outer peripheral part, 7 ... Weight body, 7a ... Upper mounting part, 7b ... Weight Section, 7c ... Connection section, 7d ... Upper holding section, 7e ... Weight piece, 7f ... Guided surface, 8 ... Detection section, 9 ... Rotating body, 9a ... Guide surface, D3 ... Vertical direction, X1 ... Hoistway, X2 …machine room

Claims (8)

Basket,
It is equipped with a plurality of vibration detection devices attached to the car.
The vibration detection device includes a spring body, a weight body attached to the spring body, and a detection unit for detecting the vibration of the weight body.
Elevators in which the natural frequencies of the plurality of vibration detectors are different from each other. The elevator according to claim 1, wherein the spring body is a string-wound spring arranged so as to be elastically deformed in the vertical direction. The vibration detection device further includes a guide surface in contact with the weight body in order to guide the weight body in the vertical direction.
The elevator according to claim 2, wherein only one guide surface is provided for the vibration detection device. The weight of the portion of the weight body arranged below the guide surface is heavier than the weight of the portion of the weight body arranged above the guide surface, according to claim 3. Elevator listed. The vibration detection device further includes a guide surface for guiding the weight body in the vertical direction.
The weight body includes a guided surface that is in contact with and guided by the guide surface.
The elevator according to claim 2 , wherein the guided surface is arranged inside the string winding spring in the vertical view. A vibration detection device that can be attached to the elevator car.
With a spring body,
A weight body attached to the spring body and
A detection unit for detecting the vibration of the weight body is provided.
The spring body is a string-wound spring arranged so as to be elastically deformed in the vertical direction .
The vibration detection device is a vibration detection device further comprising a guide surface in contact with the weight body in order to guide the weight body in the vertical direction . Only one guide surface is provided.
The weight of the portion of the weight body arranged below the guide surface is heavier than the weight of the portion of the weight body arranged above the guide surface, according to claim 6. The described vibration detector. The weight body includes a guided surface that is in contact with and guided by the guide surface.
The vibration detection device according to claim 6 or 7, wherein the guided surface is arranged inside the string winding spring in the vertical view.

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