JP2008068945A - Elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To transport a passenger to a nearest floor even when a car stops lifting between floors. <P>SOLUTION: When lifting operation of the car 4 stops between the floors in earthquake emergency operation, a main control device of a machine room releases lock by lock devices 44, 45. Then, a cage 13 descends to a car frame 12 while a pantograph 30 extends. When a landing detection device 54 detects landing of the cage 13 on the nearest floor, the main control device controls opening of a car door of the car 4. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an elevator having a function of moving a traveling cab to the nearest floor in an emergency.

  Conventionally, when the elevator car shakes greatly, such as when an earthquake occurs, and it is dangerous to run this car, maintenance personnel go to the site, and after confirming the safety of the equipment, the car is the nearest by manual operation He was landing on the floor to rescue the passengers. In addition, when a seismic low speed operation switch is provided on a monitoring panel or the like, the passenger is alighted by manually landing the car on the nearest floor by operating this switch and the car door close button simultaneously.

For example, as disclosed in Patent Document 1, in order to get a passenger out of a car when a disaster occurs, the car is automatically landed on the nearest floor.
JP-A-8-247106

  As described above, when the elevator is moved up and down to the nearest floor according to the manual operation by the worker, the maintenance worker may not be able to catch up when there are a plurality of elevators that require handling. In addition, if the intercom cannot be contacted from the inside of the car to the monitoring panel, it may take time until the passenger is rescued, and if the traffic or communication is interrupted, the rescue operation cannot be performed.

  In addition, as described above, if the car can be moved to the nearest floor in the event of a disaster, passengers can get off, but the hoisting machine can be operated before moving up and down to the nearest floor due to a failure of the hoist. Accordingly, when the raising / lowering of the car stops, the car cannot be moved to the nearest floor.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an elevator that can transport passengers to the nearest floor even when raising and lowering of a car stops between floors.

  That is, the elevator according to the present invention includes a car frame and a car that is supported by the car frame and has a car room that can move up and down, and the car room is releasably fixed to a predetermined position of the car frame, In this fixed state, the car is raised and lowered so that the car room is landed on each floor, and when the raising and lowering stops between the floors, the car room is fixed and the car room is released from the position described above. It is moved to the landing position of another floor.

  According to the present invention, passengers can be transported to the nearest floor even when the raising / lowering of the car stops between floors.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a diagram illustrating a configuration example of an elevator according to an embodiment of the present invention.
In this elevator, a main control device 2 is provided in a machine room 1 and has a car 4, a sheave 5, and a counterweight 6 in a hoistway 3. The car 4 is connected to a counterweight 6 via a main rope 7 wound around a sheave 5 provided on a motor shaft of a hoisting machine (not shown). The car 4 ascends and descends in the opposite direction with the counterweight 6 along with the rotation of the sheave 5 driven by the hoisting machine.

Further, a car movement amount detection device 8 is attached to the sheave 5. The car movement amount detection device 8 outputs a pulse signal corresponding to the rotation angle of the sheave 5 to the main control device 2.
The main control device 2 controls the drive of the hoist according to the call registration to move the car 4 up and down.

The main controller 2 detects the position of the car 4 based on the number of accumulated pulses obtained as a result of the up / down counting of the pulse signal from the car movement amount detection device 8.
The machine room 1 is provided with an earthquake detector 9. This earthquake detector 9 detects when an earthquake of a predetermined intensity reaches the machine room 1.

FIG. 2 is a diagram illustrating a configuration example of an elevator car according to the embodiment of the present invention.
As shown in FIG. 2, the car 4 has a car frame 12 and a car room 13, and can be moved up and down while the car room 13 is supported by the car frame 12 as the pantograph 30 expands and contracts. It has become.

  The car frame 12 is a combination of a fixed portion composed of a first frame 21, a second frame 22 and a third frame 23 and a movable portion composed of a fourth frame 24, a fifth frame 25, a sixth frame 26 and a seventh frame 27. It becomes.

  The first frame 21 is a frame extending in a horizontal direction, that is, a direction perpendicular to the raising / lowering direction of the car 4, and the main rope 7 is connected to the upper surface thereof.

  The second frame 22 is a frame extending in the vertical direction, that is, the direction along the raising / lowering direction of the car 4, and one end thereof is connected to one end of the first frame 21, and the other end of the second frame 22 extends downward. ing. The third frame 23 is a frame extending in the vertical direction, one end of which is connected to the other end of the first frame 21, and the other end of the third frame 23 extends downward.

The aforementioned fourth frame 24 of the movable part is a frame extending in the vertical direction, and has a hollow portion along the axial direction. The second frame 22 is slidably inserted into the hollow portion of the fourth frame 24.
The fifth frame 25 is a frame extending in the vertical direction and has a hollow portion along the axial direction. The third frame 23 is slidably inserted into the hollow portion of the fifth frame 25.

The sixth frame 26 is a frame extending in the horizontal direction, and the upper end of the fourth frame 24 and the upper end of the fifth frame 25 are connected by the sixth frame 26.
The seventh frame 27 is a frame extending in the horizontal direction, and the lower end of the fourth frame 24 and the lower end of the fifth frame 25 are connected by the seventh frame 27.
The cab 13 is fixed in a frame formed by the fourth frame 24, the fifth frame 25, the sixth frame 26 and the seventh frame 27.

  The first frame 21 and the sixth frame 26 are connected by a pantograph 30. The pantograph 30 is formed by combining a first frame 31, a second frame 32, a third frame 33, and a fourth frame 34.

  A groove 41 extending in the horizontal direction is formed near one end of the first frame 21 of the car frame 12, and the upper end of the first frame 31 of the pantograph 30 is slidably fixed in the groove 41. . One end of the second frame 32 is rotatably fixed to the other end of the first frame 21 of the car frame 12. The center part of the 1st frame 31 and the 2nd frame 32 cross | intersects, and this intersection part is fixed so that rotation is possible.

  The other end of the first frame 31 is pivotably fixed to one end of the third frame 33. A groove 42 extending in the horizontal direction is formed near one end of the sixth frame 26 of the car frame 12, and the other end of the third frame 33 is slidably fixed in the groove 42.

  The other end of the second frame 32 is pivotally fixed to one end of the fourth frame 34, and the other end of the fourth frame 34 is pivotally fixed to the other end of the sixth frame 26 of the car frame 12. . The central part of the third frame 33 and the fourth frame 34 intersect, and this intersecting part is fixed so as to be rotatable.

  Among these frames, the vicinity of the other end of the first frame 31 and the vicinity of the other end of the third frame 33 are connected by a hydraulic device 43 so that the pantograph 30 does not rapidly expand and contract.

  A lock device 44 for fixing the frame to the second frame 22 is attached to the fourth frame 24 of the car frame 12, and a fifth frame 25 of the car frame 12 is used to fix the frame to the third frame 23. The locking device 45 is attached. The locking device 44 has an electromagnet that attracts the second frame 22, and the locking device 45 has an electromagnet that attracts the fifth frame 25.

  The lock devices 44 and 45 are electrically connected to the main control device 2, and when the control signal from the main control device 2 is input, the above-described fixing is enabled or released by the magnetic force. ing.

  At normal times, that is, in a state where the entire car 4 can be moved up and down normally as the sheave 5 rotates, the pantograph 30 is folded, the locking device 44 fixes the fourth frame 24 to the second frame 22, and the locking device 45. The fifth frame 25 is fixed to the third frame 23. As a result, the car room 13 is supported by the car frame 12 at a position close to the connecting portion of the main rope 7. At normal time, the main controller 2 performs the lifting and landing control based on the position of the cab 13 when the pantograph 30 is folded as described above.

  When both the fixing by the locking device 44 and the fixing by the locking device 45 are released, the pantograph 30 is extended by the own weight of the cab 13, and the cab 13 is in the fourth frame 24, the fifth frame 25, and the sixth frame of the cab frame 12. 26 and the seventh frame 27 are lowered.

  A power device 46 is attached to the upper end portion of the fourth frame 24, and a power device 47 is attached to the upper end portion of the fifth frame 25. The power units 46 and 47 have movable wheels 52 and 53. The power units 46 and 47 are electrically connected to the main control unit 2, and when the control signal from the main control unit 2 is input, the wheels 52 and 53 described above rotate.

  The wheel 52 of the power unit 46 rotates while being in contact with the second frame 22 of the car frame 12 according to the control from the main controller 2, thereby assisting the movement of the car room 13. Moreover, the movement of the cab 13 can be assisted by the wheels 53 of the power unit 47 rotating while contacting the third frame 23 in accordance with the control from the main controller 2.

  An upper guide roller 48 for guiding the car frame 12 along a guide rail (not shown) is attached to the upper end portion of the second frame 22 of the car frame 12, and a second upper portion is attached to the upper end portion of the third frame 23. A guide roller 49 is attached.

  A lower guide roller 50 for guiding the car frame 12 along the guide rail is attached to the lower end portion of the fourth frame 24 of the car frame 12, and a second lower guide is attached to the lower end portion of the fifth frame 25. A roller 51 is attached.

  In addition, a landing detector 54 is attached to the car room 13. The landing detection device 54 is electrically connected to the main control device 2. When the landing detection device 54 comes into contact with a landing detection switch (not shown) of each floor in the hoistway 3 as the car 4 is lowered, The signal shown is output to the main controller 2 via the tail cord 10.

Next, the operation of the elevator having the configuration shown in FIG. 1 will be described.
FIG. 3 is a flowchart showing an example of the landing operation of the cab when the elevator car cage frame stops moving up and down according to the embodiment of the present invention.

  First, the earthquake detector 9 detects an earthquake that has reached the machine room 1 during normal operation (step S1). If the intensity of the earthquake is greater than or equal to a low gal value (YES in step S2), the earthquake The detector 9 outputs a signal indicating this to the main controller 2.

  When the signal from the earthquake detector 9 is input, the main controller 2 switches the operation mode of the car 4 from the normal operation mode, which is the operation mode according to call registration, to the seismic control operation mode (step S3). The control operation during an earthquake is an operation for landing the car 4 on the nearest floor regardless of call registration.

  Here, the main controller 2 determines whether the car 4 is before landing on the nearest floor (step S4), and if the car room 13 is landing on the nearest floor (step S4). NO), the main controller 2 opens the car door of the car 4 in conjunction with the landing door (step S15).

  On the other hand, if the landing detection device 54 has not detected the landing of the cab 13, that is, if the cab 13 has not landed on the nearest floor (YES in step S 4), the main control device 2 It is determined whether the distance between the car position detected based on the pulse signal from the car movement amount detecting device 8 and the car position on the nearest floor is not within a zone where landing is possible by running for 10 seconds (step) S5).

  Here, the main controller 2 has a distance between the car position detected based on the pulse signal from the car movement amount detection device 8 and the car position on the nearest floor in a zone where landing is possible by traveling for 10 seconds. If it is determined that it is not (NO in step S5), the lifting / lowering operation of the car 4 is stopped and the traveling is stopped (step S6). It is determined whether the safety circuit is abnormal due to damage in the hoistway such as deformation of the guide rail (step S7).

  Here, when it is determined that the safety circuit is abnormal (NO in step S7), the main controller 2 detects the position of the car closest to the car position detected based on the pulse signal from the car movement amount detector 8. It is determined whether or not the distance to the car position on the floor is within a predetermined distance (step S8). This determined distance is the maximum distance that the car room 13 can land on the nearest floor by extending the pantograph 30 and lowering the car room 13.

  On the other hand, if the main controller 2 determines “YES” in the process of step S5 or step S7, it is assumed that the vehicle can normally run by the operation of the hoisting machine, and the nearest rescue method is used by the normal rescue method. (Step S9). Then, main controller 2 opens the car door of car 4 in conjunction with the landing door (step S15).

  If the main controller 2 determines “NO” in step S8, it assumes that the car room 13 cannot be landed on the nearest floor even if the pantograph 30 is extended, and communicates an abnormal alarm signal at the time of earthquake. The data is output to an outside, for example, an elevator monitoring center via the line (step S13).

  On the other hand, when it is determined “YES” in the process of step S8, the main control device 2 considers that the car room 13 can be landed on the nearest floor by extending the pantograph 30, and the lock devices 44 and 45 The fixation is released (step S10).

  Accordingly, the fourth frame 24, the fifth frame 25, the sixth frame 26, and the seventh frame 27 of the car frame 13 and the car frame 12 that supports the car room 13 are moved to the nearest floor below the first floor by the weight of the car room 13. Go down. In this case, the pantograph 30 is gently extended by the action of the hydraulic device 43, and the cab 13 is lowered at a speed that does not pose a danger to the passenger (step S11). Further, in the case where the cab 13 is a large and heavy elevator, the main controller 2 rotates the wheels 52 and 53 of the power units 46 and 47 along the descending direction of the cab 4 to move the cab. Assist in descending 13

  When the car room 13 descends to the landing position of the nearest floor below the first floor and the landing detection device 54 detects this landing, the landing detection device 54 controls the signal indicating this to the main control. Output to device 2.

When the main controller 2 receives a signal from the landing detector 54, the main controller 2 considers that the car room 13 has landed (YES in step S12), operates the lock devices 44 and 45, and moves the fourth frame 24 to the fourth frame 24. The second frame 22 is fixed, and the fifth frame 25 is fixed to the third frame 23 (step S14). Thereby, the movement of the cab 13 with respect to the fixed portion of the car frame 12 is stopped.
Then, main controller 2 opens the car door of car 4 in conjunction with the landing door (step S15). Thus, the passenger can get off from the car 4.

Next, an operation from after landing to returning to normal operation when the above-described pantograph 30 is extended to land on the nearest floor will be described.
FIG. 4 is a flowchart illustrating an example of the landing operation of the cab when the elevator car cage frame stops moving up and down according to the embodiment of the present invention.

  Here, it is assumed that an interphone (not shown) in the car 4 is operated by a passenger, and a worker goes to the elevator by a request using the interphone or by an abnormal alarm S7 in FIG.

FIG. 5 is a diagram showing an example of the appearance of an alarm panel in the elevator car according to the embodiment of the present invention.
The boarding area is provided with an alarm panel 60, which is normally covered with a cover 61. When the worker opens the cover 61 at the time of recovery, the earthquake recovery switch 62 appears. This switch may be provided in the machine room or in the main controller 2 in addition to the alarm panel 60, and is connected to the main controller 2.

  The worker who arrives at the elevator confirms the passenger's getting off, performs the restoration work for the hoisting machine and the sheave 5 to operate as necessary, opens the cover 61 of the alarm panel 60 in the landing, and the earthquake restoration switch When 62 is operated, a signal indicating this is output to the main controller 2.

When the signal from the earthquake recovery switch 62 is input, the main control device 2 switches the operation mode from the seismic control operation mode to the operation return mode (step S21), and outputs a control signal to the lock devices 44 and 45 to lock it. Release (step S22).
Here, it is assumed that the hoisting machine and the sheave 5 are normally operated by the above-described maintenance work, and the inconvenience for the car 4 to travel has been eliminated.

  The main controller 2 drives the wheels 52 and 53 of the power units 46 and 47 on the cab 13 side along the ascending direction of the cab 13 and raises the cab 13 while folding the pantograph 30 (step S23). ).

  A return detection switch 14 is attached to the lower surface of the first frame 21 of the car frame 12. The return detection switch 14 detects when the position of the cab 13 has returned to the initial position, that is, the normal position.

  When the car compartment 13 of the car 4 rises and the upper surface of the sixth frame 26 comes into contact with the return detection switch 14 of the first frame 21, a signal indicating this is sent from the return detection switch 14 via the tail cord 10 to the main controller. 2 is output.

  When the signal from the return detection switch 14 is input, main controller 2 determines that the position of cab 13 has returned to the initial position (YES in step S24), and stops the operation of power units 46 and 47. Then, main controller 2 operates lock devices 44 and 45 to fix fourth frame 24 to second frame 22 and fifth frame 25 to third frame 23 (step S25).

  Then, the main control device 2 controls the raising / lowering of the car 4 (step S26), and by this raising / lowering, the car room 13 is lowered to the landing position of the nearest floor, and the landing detecting device 54 performs this landing. If detected, the landing detection device 54 outputs a signal indicating this to the main control device 2.

  When the main controller 2 inputs a signal from the landing detector 54, the car room 13 is considered to have landed (YES in step S27), and the car door of the car 4 is opened in conjunction with the landing door. The operation mode is switched to the normal operation mode (step S28).

  As described above, the elevator according to the embodiment of the present invention reaches the nearest floor by moving the car room 13 with respect to the car frame 12 when the lifting operation of the entire car 4 is stopped. Therefore, even when the raising / lowering operation of the car 4 is stopped between floors, the passenger's cab 13 can be moved to the nearest floor. Therefore, the safety of the elevator at the time of an earthquake can be improved.

In the embodiment described above, two lock devices and two power devices are provided. However, the present invention is not limited to this. For example, when the weight of the car 4 is light, one may be provided.
Moreover, in this embodiment, when the raising / lowering operation of the car 4 is stopped between the floors during the seismic control operation, the main control device 2 of the machine room 1 releases the lock by the lock devices 44 and 45 and opens the car room 13. Although it was set as the structure moved to the nearest floor, it is not restricted to this, When the raising / lowering operation | movement of the cage | basket | car 4 stops between floors at the time of normal driving | operation, the main controller 2 cancels | releases the lock | rock by the locking devices 44 and 45, It is good also as a structure which moves the cab 13 to the nearest floor.

  The present invention is not limited to the above-described embodiment as it is, and can be embodied by modifying the constituent elements without departing from the scope of the invention in the implementation stage. Various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the embodiment. For example, some components may be omitted from all the components shown in the embodiment. Furthermore, you may combine suitably the component covering different embodiment.

The figure which shows the structural example of the elevator according to embodiment of this invention. The figure which shows the structural example of the elevator car according to embodiment of this invention. The flowchart which shows an example of the landing operation | movement of the cab when the raising / lowering stop of the cage | basket | car frame of the elevator car according to embodiment of this invention is stopped. The flowchart which shows an example of the landing operation | movement of the cab when the raising / lowering stop of the cage | basket | car frame of the elevator car according to embodiment of this invention is stopped. The figure which shows an example of the external appearance of the alarm panel in the elevator car according to embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Machine room, 2 ... Main controller, 3 ... Hoistway, 4 ... Ride car, 5 ... Sheave, 6 ... Balance weight, 7 ... Main rope, 8 ... Ride movement detection device, 9 ... Earthquake detector, DESCRIPTION OF SYMBOLS 10 ... Tail code, 11 ... Bottom floor landing, 12 ... Car frame, 13 ... Car room, 14 ... Return detection switch 21, 22, 23, 24, 25, 26, 27, 31, 32, 33, 34 ... Frame, 30 ... pantograph, 41, 42 ... groove, 43 ... hydraulic device, 44, 45 ... locking device, 46, 47 ... power device, 48, 49 ... upper guide roller, 50, 51 ... lower guide roller, 54 ... wearing Floor detector, 60 ... alarm panel, 61 ... control panel cover, 62 ... earthquake recovery switch.

Claims (8)

A car having a car frame and a car room supported by the car frame and capable of moving up and down,
Fixing means for releasably fixing the cab to a predetermined position of the car frame;
Elevation control means for raising and lowering the car so that the car room is landed on each floor in a state where the car room is fixed to the car frame by the fixing means;
When the raising / lowering of the car by the raising / lowering control means stops between the floors, the fixing of the car room by the fixing means is released to move the car room from the predetermined position to the landing position of another floor. An elevator comprising: a fixing release means for moving the elevator. The fixing release means is
When the raising / lowering of the car by the raising / lowering control means stops between the floors, the fixing of the car room by the fixing means is released to move the car room from the predetermined position to the landing position of another floor. The elevator according to claim 1, wherein the elevator is lowered. The fixing release means is
When the raising / lowering of the car by the raising / lowering control means stops between the floors after starting the control operation at the time of earthquake, the fixing of the car room by the fixing means is released and the car room is moved from the predetermined position. The elevator according to claim 1, wherein the elevator is lowered to a landing position on another floor. The car room is slidable up and down along the car frame,
The fixing means includes
The car is fixed to the car frame so as not to slide in the car room in a state where normal traveling of the car is possible,
The fixing release means is
When the raising / lowering of the car by the raising / lowering control means stops between floors, the fixing of the car room by the fixing means is released, and the car room is landed on another floor below the predetermined position. The elevator according to claim 2 or 3, wherein the elevator is slid to a position. The fixing means is configured to move the car room to the predetermined position of the car frame when the raising / lowering operation of the car is restored and the car frame is landed to the landing position of the nearest floor. The elevator according to claim 2 or 3, wherein the elevator is fixed again. The car room is slidable up and down along the car frame,
The elevator according to claim 2 or 3, further comprising a power mechanism that slides the cab downward when the lock release means releases the cab lock.   The elevator according to claim 2 or 3, wherein the cab is supported by the cab frame via a hydraulic device.   The elevator according to claim 2 or 3, wherein the car room is supported by the car frame via a pantograph.

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