WO2007043178A1

WO2007043178A1 - Elevator device

Info

Publication number: WO2007043178A1
Application number: PCT/JP2005/018864
Authority: WO
Inventors: Hisao Kuraoka
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2005-10-13
Filing date: 2005-10-13
Publication date: 2007-04-19

Abstract

An elevator car and a counterbalance weight as vertically moving bodies are vertically movably placed in a hoistway. In the hoistway are drive devices for lifting and lowering the vertically movable bodies. The vertical movable bodies are provided with guide devices guided by guide rails provided in the hoistway. The guide devices each have a displacement body capable of being displaced relative to the associated vertically movable body and also have an urging device for urging the displacement body in the direction in which the displacement body is in contact with a guide rail. Also, the guide devices are guided by the guide rails while being in contact with them. A detection device for detecting a signal according to a displacement of a displacement body relative to the vertically movable body is provided at a guide device. Each drive device is controlled by a control device based on information from a relevant detection device.

Description

Specification

Elevator equipment

Technical field

[0001] The present invention relates to an elevator apparatus in which a car and a counterweight are lifted and lowered in a hoistway by driving forces of a plurality of driving apparatuses.

Background art

Conventionally, there has been proposed an elevator apparatus in which a car and a counterweight are moved up and down by the driving force of two driving apparatuses because of the small size of the driving apparatus. In such a conventional elevator apparatus, the force and the counterweight are arranged such that the first main rope wound around the drive sheave of one drive device and the second main rope wound around the drive sheave of the other drive device. The cable is suspended in the hoistway. The force cage and the counterweight are provided with a plurality of rope-stopping devices to which the ends of the first main rope and the second main rope are respectively connected. The cage is equipped with a detection device that detects the difference in tension between the first main rope and the second main rope by detecting the amount of displacement of the tangle of the leash. The operation of the elevator is controlled so as to eliminate the tension difference between the first main rope and the second main rope. This prevents the force from tilting (see Patent Document 1).

Patent Document 1: Japanese Patent Laid-Open No. 2004-155526

Disclosure of the invention

Problems to be solved by the invention

[0004] However, since the first main rope and the second main rope are elastic and expand and contract, even if the car is actually tilted, there is a difference in tension between the first main rope and the second main rope. It may not occur. Therefore, in such a case, it is impossible to detect that the force is tilted.

[0005] The present invention has been made to solve the above-described problems, and provides an elevator apparatus that can more reliably prevent the lifting body that moves up and down in the hoistway from being largely inclined. For the purpose.

Means for solving the problem

[0006] An elevator apparatus according to the present invention includes a lifting body that can be lifted and lowered in a hoistway, and a lifting body that is A plurality of driving devices to be moved, a guide rail provided in the hoistway, a displacement body that can be displaced with respect to the lifting body, and a biasing device that biases the displacement body in a direction in contact with the guide rail. A guide device that is provided on the body and is guided by the guide rail while the displacement body is in contact with the guide rail, a detection device that is provided in the guide device and generates a signal corresponding to the displacement of the displacement body relative to the lifting body, and A control device for controlling each drive device based on the information.

Brief Description of Drawings

FIG. 1 is a configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention.

2 is a plan view showing the roller guide device of FIG. 1. FIG.

FIG. 3 is a side view showing the roller guide device of FIG. 2.

FIG. 4 is a plan view showing a roller guide device according to Embodiment 2 of the present invention.

FIG. 5 is a side view showing the roller guide device of FIG. 4.

FIG. 6 is a plan view showing a slide guide device according to Embodiment 3 of the present invention.

7 is a cross-sectional view taken along line VII-VII in FIG.

FIG. 8 is a plan view showing a slide guide device according to Embodiment 4 of the present invention.

FIG. 9 is a sectional view taken along line IX-IX in FIG.

FIG. 10 is a block diagram showing another example of the elevator apparatus according to Embodiment 1 of the present invention. FIG. 11 is a block diagram showing another example of the elevator apparatus according to Embodiment 1 of the present invention. Best mode for carrying out

Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

Embodiment 1.

FIG. 1 is a configuration diagram showing an elevator apparatus according to Embodiment 1 of the present invention. In the figure, a car (elevating body) 2 and a counterweight (elevating body) 3 are provided in the hoistway 1 so as to be able to move up and down. In the upper part of the hoistway 1, there are a first driving device 4 and a second driving device 5 (that is, a plurality of driving devices) for raising and lowering the force 2 and the counterweight 3, and the first driving device 4 and the second driving device 2. The first and second deflecting wheels 6 and 2 are spaced from each other of the drive unit 5. Rise wheel 7 is set up!

The first drive device 4 has a first drive device body 8 including a motor, and a first drive sheave 9 rotated by the first drive device body 8. The second drive device 5 includes a second drive device main body 10 including a motor, and a second drive sheave 11 rotated by the second drive device main body 10.

A plurality of first main ropes 12 are wound around the first drive sheave 9 and the first deflector wheel 6. A plurality of second main ropes 13 are wound around the second drive sheave 11 and the second deflecting wheel 7. The force 2 and the counterweight 3 are suspended in the hoistway 1 by the first main rope 12 and the second main rope 13.

[0011] At the upper part of the car 2, a first car rope stopping device 14 to which one end of each first main rope 12 is connected, and a second car rope stopping to which one end of each second main rope 13 is connected A device 15 is provided. The first car tie-fastening device 14 and the second car tie-fastening device 15 are spaced apart from each other in the horizontal direction.

[0012] Connected to the upper part of the counterweight 3 is the first counterweight anchoring device 16 to which the other end of each first main rope 12 is connected and the other end of each second main rope 13. And a second counterweight rope anchoring device 17 is provided. The first counterweight rope anchoring device 16 and the second counterweight rope anchoring device 17 are horizontally spaced apart from each other.

In the hoistway 1, a pair of car guide rails 18 for guiding the force 2 and a pair of counterweight guide rails 19 for guiding the counterweight 3 are provided. The force 2 is arranged between the car guide rails 18 and the counterweight 3 is arranged between the counterweight guide rails 19.

A plurality of roller guide devices 20 are provided on the upper and lower portions of the car 2 so as to be guided while being in contact with the car guide rails 18 when the car 2 is raised and lowered. In addition, a plurality of roller guide devices 21 are provided at the upper and lower portions of the counterweight 3 so as to be guided while contacting the counterweight guide rails 19 when the counterweight 3 is raised and lowered. Yes.

FIG. 2 is a plan view showing the roller guide device 20 of FIG. FIG. 3 is a side view showing the roller guide device 20 of FIG. In the figure, the guide frame 22 is fixed to the car 2. It has been determined. The guide frame 22 has a lever 24 that can rotate around a pin 23 extending in the depth direction of the car 2 and a pair of levers 25 that can rotate around a pin (not shown) extending toward the front of the car 2. And are provided! /

Each of the levers 24 and 25 is provided with a roller (displacement body) 26 that can rotate around a horizontally extending rotary shaft. Among the rollers 26, the roller 26 provided on the lever 24 is arranged on the car 2 side of the car guide rail 18 with respect to the front direction of the car 2, and the remaining rollers 26 are arranged on the depth direction of the force car 2. One car guide rail 18 is arranged on each of the front side and the rear side. Each roller 26 is displaced with respect to the car 2 by the rotating levers of the levers 24 and 25, and is brought into contact with and separated from the car guide rail 18.

A plurality (three) of support members 27 are fixed to the guide frame 22. In this example, each support member 27 is a rod-like member extending in parallel with the force guide rail 18. Each support member 27 supports a biasing device 28 that biases each roller 26 in a direction in which each roller 26 comes into contact with the car guide rail 18. In this example, each biasing device 28 biases each roller 26 via each lever 24, 25. When the cage 2 is moved up and down, each roller 26 is guided while being in contact with the car guide rail 18 by the urging force of each urging device 28.

Each biasing device 28 includes a through rod 29 attached to the support member 27, a lock nut (stop member) 30 attached to the tip of the through rod 29, a lock nut 30 and levers 24 and 25. And a buffer spring 31 that is an elastic body that generates an urging force. Each threading rod 29 is loosely passed through the reno 24, 25. As a result, each of the reno 24, 25 is rotated by the through-rod 29 without interference. The buffer spring 31 is compressed by being pressed toward the levers 24 and 25 by the retaining nut 30. The magnitude of the urging force of each urging device 28 can be adjusted by adjusting the position of the retaining nut 30 with respect to the through-rod 29.

The roller guide device 20 includes a guide frame 22, levers 24 and 25, a roller 26, a support member 27, and an urging device 28. Further, the configuration of the roller guide device 21 provided in the counterweight 3 is the same as that of the roller guide device 20.

[0020] Between each lever 24, 25 and each spring 31, a pressure detector (detection device) 32 is provided for detecting the pressure with which the biasing device 28 biases the roller 26. Compression of each buffer spring 31 The amount of increase is increased when the levers 24 and 25 are rotated in the direction approaching the locking nut 30 and decreased when the levers 24 and 25 are rotated in the direction away from the locking nut 30. Therefore, the pressure detected by each pressure detector 32 changes according to the amount of rotation of each lever 24, 25. That is, each pressure detector 32 generates a signal corresponding to the displacement of the roller 26 relative to the force 2.

In the hoistway 1, a control device 33 for controlling the operation of the elevator is installed. Information from each pressure detector 32 is transmitted to the control device 33. In the control device 33, a reference value for comparison with the pressure value detected by each pressure detector 32 is set in advance.

[0022] When the pressure value from each pressure detector 32 exceeds the reference value, the control device 33 controls the first drive sheave 9 and the first drive sheave 9 and so that the pressure value from each pressure detector 32 becomes equal to or less than the reference value. The number of rotations of the second drive sheave 11 is controlled. That is, the control device 33 controls each of the first drive device 4 and the second drive device 5 based on information from each pressure detector 32. As a result, the force 2 is prevented from being greatly inclined.

Next, the operation will be described. During operation of the elevator, the magnitude of the elastic force of each buffer spring 31 is detected by each pressure detector 32, and information on each detected pressure value is constantly sent to the control device 33. In the control device 33, the pressure value from each pressure detector 32 is compared with a reference value set in advance.

[0024] When all of the pressure values from the pressure detectors 32 are equal to or less than the reference value, the first and second driving devices 4 and 5 are controlled by the control device so that the pressure values are maintained below the reference value as they are. 3 Controlled by 3. At this time, the first drive sheave 9 and the second drive sheave 11 are rotated in synchronization with each other.

[0025] For example, when at least one of the pressure values from each pressure detector 32 exceeds a reference value due to a difference in the length of each of the first main rope 12 and the second main rope 13, etc. The first and second driving devices 4 and 5 are controlled by the control device 33 so that all the pressure values are below the reference value. At this time, the first drive sheave 9 and the second drive sheave 11 are rotated at different rotational speeds.

In such an elevator apparatus, a roller 26 that can be displaced with respect to the force 2 is provided with an urging apparatus 28. , The pressure due to the urging of the urging device 28 is detected by the pressure detector 32, and the first and second driving devices 4, 5 are moved from the pressure detector 32. For example, there is a difference in the lengths of the first main rope 12 and the second main rope 13 or the passengers are located in a biased position in the car 2. As a result, when the force 2 is actually tilted with respect to the car guide rail 18, even if there is no tension difference between the first main rope 1 2 and the second main rope 13, It can be detected more reliably, and the inclination of the car 2 can be corrected by adjusting the rotation speed of each of the first and second drive sheaves 9 and 11. As a result, the inclined car 2 can be returned to the normal posture more reliably before the inclination of the force cage 2 is increased, for example, the reaction force acting on the roller guide device 20 and the cage guide rail 18 is increased. Etc. can be prevented.

[0027] In addition, since the pressure due to the urging force of the urging device 28 is detected by the pressure detector 32, the inclination of the force 2 can be detected more reliably with a simple structure and lower force. can do.

[0028] In the above example, the pressure detector 32 has the pressure detector 32 disposed between the force retaining nut 30 and the buffer spring 31 disposed between the levers 24 and 25 and the buffer spring 31. May be arranged.

In the above example, the pressure detector 32 is provided in the roller guide device 20 provided in the force cage 2, but the pressure detector 32 is provided in the roller guide device 21 provided in the counterweight 3. 32 may be provided.

[0030] Embodiment 2.

In the above example, the pressure detector 32 that detects the magnitude of the pressure that urges the roller 26 is used to detect the inclination of the force 2, but the displacement of the roller 26 relative to the cage 2 is detected. The inclination of the force 2 may be detected based on information on the displacement detector force.

That is, FIG. 4 is a plan view showing a roller guide device 20 according to Embodiment 2 of the present invention. FIG. 5 is a side view showing the roller guide device 20 of FIG. In the figure, each support member 27 is provided with a displacement detector (detection device) 41 facing the levers 24 and 25. The distance between each lever 24, 25 and each displacement detector 41 changes according to the amount of rotation of each lever 24, 25. Each displacement detector 41 is connected to each lever 24, 25. The amount of displacement of each roller 26 with respect to the car 2 is detected by detecting the interval between them. That is, each displacement detector 41 generates a signal corresponding to the displacement of the roller 26 relative to the car 2! / Speak.

Information from each displacement detector 41 is transmitted to the control device 33. In the control device 33, a reference value for comparison with the displacement amount detected by each displacement detector 41 is set in advance.

[0033] When the displacement amount from each displacement detector 41 exceeds the reference value, the control device 33 controls the first drive sheave 9 and the first drive sheave 9 and the The number of rotations of the second drive sheave 11 is controlled. That is, the control device 33 controls each of the first drive device 4 and the second drive device 5 based on information from each displacement detector 41. As a result, the force 2 is prevented from being greatly inclined. Other configurations are the same as those in the first embodiment.

Next, the operation will be described. During the operation of the elevator, the displacement amount of each roller 26 is detected by each displacement detector 41, and each detected displacement amount is constantly sent to the control device 33. In the control device 33, the displacement amount from each displacement detector 41 is compared with a preset reference value.

[0035] When all of the displacement amounts from the respective displacement detectors 41 are equal to or less than the reference value, the first and second drive devices 4, 5 are controlled by the control device so that the respective displacement amounts are maintained below the reference value as they are. 3 Controlled by 3. At this time, the first drive sheave 9 and the second drive sheave 11 are rotated in synchronization with each other.

[0036] When at least one of the displacement amounts from the displacement detectors 41 exceeds the reference value, the first and second drive devices 4, 5 are controlled by the control device so that all the displacement amounts are equal to or less than the reference value. Controlled by 33. At this time, the first drive sheave 9 and the second drive sheave 11 are rotated at different rotational speeds.

In such an elevator apparatus, the first and second drive devices 4 and 5 are controlled by the control device 33 based on information from each displacement detector 41 that detects the amount of displacement of each roller 26 relative to the car 2. Because it is controlled, the inclination of the car 2 with respect to the car guide rail 18 can be detected more reliably, and the inclined car 2 can be more reliably detected before the inclination of the force 2 becomes large. Can return to normal posture.

In the above example, the displacement detector 41 is provided on each support member 27, but the displacement detector 41 may be provided on each lever 24, 25 so as to face the support member 27.

[0039] Embodiment 3.

In Embodiment 1, the pressure detector 32 is provided in the roller guide device 20 in order to detect the inclination of the car 2. However, the pressure detector 32 is provided in the slide guide device so that the inclination of the force 2 is increased. Let's detect it.

That is, FIG. 6 is a plan view showing a slide guide device 51 according to Embodiment 3 of the present invention. FIG. 7 is a sectional view taken along line VII-VII in FIG. In the figure, a slide guide device 51 guided by the force guide rail 18 is provided at the upper and lower portions of the car 2 (FIG. 1). In addition, a slide guide device that is guided by a counterweight guide rail is provided at the upper and lower portions of the counterweight.

[0041] A guide frame 52 is fixed to the car 2. The guide frame 52 has a receiving portion 53 having a U-shaped horizontal cross section into which the car guide rail 18 is inserted. A displacement body 54 that is displaceable with respect to the car 2 is supported by the receiving portion 53 via an urging device 56. The displacement body 54 has a shroud 55 that contacts the car guide rail 18.

[0042] The shear material 55 is in contact with the car guide rail 18 in the depth direction of the car 2, and the front and rear forces of the force guide rail 18 are also in contact with each other. 18 cages 2 side forces are in contact.

[0043] The urging device 56 urges the displacement body 54 in a direction in which the shoe material 55 contacts the car guide rail 18. When the cage 2 is moved up and down, the displacement body 54 is guided by the car guide rail 18 while the shoe material 55 is in contact with the car guide rail 18.

Further, the urging device 56 is slidably passed through a plurality of (three) buffer springs 57 that generate urging force for bringing the displacement body 54 into contact with the car guide rail 18, and the receiving portion 53. The displacement body 54 has a through rod 58 that also extends in the direction of the opening of the cage 2 and a lock nut (stop member) 59 provided at the tip of the through rod 58. Each buffer spring 57 is contracted between the receiving portion 53 and the displacement body 54. In addition, a pressure detector 32 that detects a pressure generated by the urging of each buffer spring 57 is disposed between each buffer spring 57 and the receiving portion 53. [0045] When the car 2 tilts with respect to the car guide rail 18, the distance between the displacement body 54 and the receiving portion 53 changes, and the amount of contraction of each buffer spring 57 changes according to this change. Accordingly, each pressure detector 32 detects a pressure corresponding to the inclination of the force 2. The slide guide device 51 includes a guide frame 52, a displacement body 54, and an urging device 56. Other configurations are the same as those in the first embodiment.

In this way, in the slide guide device 51 as well, the amount of contraction of each buffer spring 57 changes according to the inclination of the car 2 with respect to the car guide rail 18. By detecting the magnitude of the pressure by the pressure detector 32, the inclination of the force 2 can be detected more reliably, and before the inclination of the force 2 becomes larger, the inclined force 2 It is possible to return to a normal posture more reliably.

In the above example, each pressure detector 32 is disposed between each buffer spring 57 and the receiving portion 53, but each pressure detector 32 is provided between each buffer spring 57 and the displacement body 54. A detector 32 may be arranged.

[0048] Embodiment 4.

In Embodiment 3, the pressure detector 32 is provided in the slide guide device 51 in order to detect the inclination of the car 2, but the displacement detector 41 may be provided in the slide guide device 51.

That is, FIG. 8 is a plan view showing a slide guide device 51 according to Embodiment 4 of the present invention. FIG. 9 is a cross-sectional view taken along the line IX-IX in FIG. In the figure, the receiving portion 53 is provided with a plurality (three) of displacement detectors 41 facing the displacement body 54. The displacement detector 41 is arranged avoiding the buffer springs 57. The displacement body 54 is displaced with respect to at least one of the displacement detectors 41 when the car 2 is inclined with respect to the car guide rail 18. Each displacement detector 41 detects the amount of displacement of the displacement body 54 with respect to each displacement detector 41. Other configurations are the same as those in the third embodiment.

[0050] In this way, in the slide guide device 51, the displacement amount force of the displacement body 54 against the car 2 is the displacement amount according to the inclination of the force 2 relative to the car guide rail 18! /. By detecting the amount of displacement with respect to Gr. 2 with the displacement detector 41, it is possible to detect the inclination of the force 2 more reliably. Can return to normal posture. In the above example, each displacement detector 41 is provided in the receiving portion 53, but each displacement detector 41 may be provided in the displacement body 54 so as to face the receiving portion 53.

In each of the above embodiments, the force 2 and the counterweight 3 are moved up and down by the driving forces of the first and second drive units 4 and 5. The force 2 and the counterweight 3 may be moved up and down by the driving force of the four driving devices. In this case, each of the first main rope to the fourth main rope is wound around the drive sheave of each drive device. In addition, one end of each of the first main rope to the fourth main rope is connected to each of the four corners of the force 2, and the other end of the first main rope to the fourth main rope is connected to the upper portion of the counterweight 3. The In this way, it is possible to control each of the rotational speeds of the four drive sheaves, and it is possible to correct the inclination of the car 2 in a plurality of directions, which is just the inclination of the car 2 in one direction.

[0053] Further, in each of the above embodiments, the one end force S of each of the first main rope 12 and the second main rope 13 is connected to the cage 2, and each of the first main rope 12 and the second main rope 13 is connected. The force to which the present invention is applied to the elevator apparatus having the other end connected to the counterweight 3 As shown in FIG. 10, a car suspension 61 is provided on the upper part of the force 2, and the car suspension 61 is wrapped around The present invention may be applied to an elevator apparatus in which the traction 2 and the counterweight 3 are suspended by the main rope 62 that is provided. In this case, the main rope 62 is connected to the counterweight 3 at one end, and from the one end, the first sloping wheel 4, the first driving sheave 9, the power suspension wheel 61, the second driving sheave 11, and the second 2 Wrapping wheel 7 is wound in this order, and connected to counterweight 3 at the other end. If the present invention is applied to such an elevator apparatus, it is possible to prevent the force 2 from being inclined and to correct the inclination of the counterweight 3.

Further, as shown in FIG. 11, a counterweight suspension car 63 is provided on the upper part of the counterweight 3, and the main rope 64 wound around the counterweight suspension car 63 is used to support the force 2 and the fishing gear. The present invention may be applied to an elevator apparatus in which the weight 3 is suspended. In this case, the main rope 64 is connected to the force 2 at one end, and from one end, the first drive sheave 9, the first deflector 4, the counterweight suspension 63, the second deflector 7, and the second drive. Wrapped in order of sheave 11 and connected to force 2 at the other end. By applying the present invention to such an elevator apparatus, it is possible to prevent the counterweight 3 from being inclined and to correct the inclination of the force 2.

Claims

The scope of the claims

[1] Lifting body capable of moving up and down in the hoistway,

A plurality of driving devices for raising and lowering the elevating body;

A guide rail provided in the hoistway,

A displacement body that is displaceable with respect to the lifting body; and a biasing device that biases the displacement body in a direction in contact with the guide rail. The displacement body is provided on the lifting body, and the displacement body is the guide A guide device guided by the guide rail while contacting the rail;

A detection device that is provided in the guide device and generates a signal corresponding to the displacement of the displacement body relative to the lifting body; and

An elevator apparatus comprising: a control device that controls each of the drive devices based on information from the detection device.

2. The elevator apparatus according to claim 1, wherein the detection device is a displacement detector that detects a displacement amount of the displacement body relative to the lifting body.

3. The elevator apparatus according to claim 1, wherein the detection device is a pressure detector that detects a pressure with which the biasing device biases the displacement body.