JP2015231890A - Elevator device and its control method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an elevator device which can inspect a control board even if a lift stroke is short and a vertical dimension of each hoistway is small, and its control method.SOLUTION: An elevator device related to one embodiment comprises a car, a control board, first stop means, switching means and position detection means. The car ascends and descends in a hoistway. The control board controls the lift of the car, and has an operation mode and an inspection mode as a control state. The first stop means stops the car reaching a regulation position which regulates a liftable range of the car in the hoistway. The switching means switches the control state of the control board to the inspection mode from the operation mode. The position detection means detects a position of the car in the hoistway. When the control state of the control board is switched to the inspection state from the operation state by the switching means, the control board invalidates the first stop means, and makes the car ascend and descend up to a prescribed inspection position which is set outside the liftable range based on positional information of the car acquired by the position detection means.

Description

  Embodiments described herein relate generally to an elevator apparatus and a control method thereof.

  2. Description of the Related Art Conventionally, an elevator apparatus has been used in which the entrance / exit of the basket 3 is in two directions and the control panel 2 is installed on the uppermost floor portion of the hoistway 1. When inspecting the control panel 2 of such an elevator apparatus, the maintenance person lowers the cage 3 so that the control panel 2 and the basket 3 do not overlap, and gets on the lowered cage 3 to inspect the control panel 2. I do. However, when the lifting / lowering stroke of the cage (the range in which the cage 3 moves up and down in the operation mode) is short, as shown in FIG. Even if the cage 3 is lowered to the lower limit position where it is forcibly stopped outside the stroke, the control panel 2 and the basket 3 may overlap, and the control panel 2 may not be inspected.

  Therefore, in such an elevator apparatus, as shown in FIG. 11 (B), the upper part of the hoistway 1 is raised to increase the overhead dimension (distance between the ceiling of the hoistway 1 and the uppermost floor), By installing the control panel 2 at a position higher than usual, the control panel 2 and the basket 3 are prevented from overlapping. Further, in order to prevent the control panel 2 and the basket 3 from overlapping with each other, a dummy floor for lowering the cage 3 may be installed in the lower part of the hoistway 1. The same applies to the case where the control panel 2 is installed on the lowermost floor portion of the hoistway 1. Or the provision of a dummy floor above the hoistway 1 has been taken.

  However, since the above-mentioned measures require adjustment of the vertical dimension of the hoistway 1, it cannot be applied to existing buildings or buildings with height restrictions, and the elevator device cannot be installed. there were.

JP 2011-126609 A JP 2007-153476 A

  Provided is an elevator apparatus capable of inspecting a control panel even when the lifting process is short and the vertical dimension of the hoistway is small, and a control method therefor.

  An elevator apparatus according to an embodiment includes a basket, a control panel, first stop means, switching means, and position detection means. The basket moves up and down the hoistway. The control panel controls the raising and lowering of the car and has an operation mode and an inspection mode as control states. The first stopping means stops the cage that has reached a specified position that defines a range in which the cage can be raised and lowered in the hoistway. The switching means switches the control state of the control panel from the operation mode to the inspection mode. The position detecting means detects the position of the cage in the hoistway. When the control state of the control panel is switched from the operation mode to the inspection mode by the switching means, the control panel can invalidate the first stop means and can raise and lower the car based on the position information of the car acquired from the position detecting means. Raise and lower to a predetermined inspection position set outside the range.

The figure which shows schematic structure of the elevator apparatus which concerns on 1st Embodiment. The flowchart which shows the control method of the elevator apparatus which concerns on 1st Embodiment. The figure which shows an example of the short circuit of a 1st stop means. The figure which shows schematic structure of the elevator apparatus which concerns on 2nd Embodiment. The flowchart which shows the control method of the elevator apparatus which concerns on 2nd Embodiment. The figure which shows schematic structure of the elevator apparatus which concerns on 3rd Embodiment. The flowchart which shows the control method of the elevator apparatus which concerns on 3rd Embodiment. The figure which shows schematic structure of the elevator apparatus which concerns on 4th Embodiment. The figure which shows schematic structure of the elevator apparatus which concerns on 5th Embodiment. The flowchart which shows the control method of the elevator apparatus which concerns on 5th Embodiment. The figure which shows schematic structure of the conventional elevator apparatus.

  Embodiments of the present invention will be described below with reference to the drawings.

(First embodiment)
First, the elevator apparatus and control method thereof according to the first embodiment will be described with reference to FIGS. FIG. 1 is a diagram illustrating a schematic configuration of an elevator apparatus according to the present embodiment. This elevator apparatus is an elevator apparatus in which the cage moves up and down between the first floor (1F) and the second floor (2F), and the direction of the entrance / exit of the basket differs between 1F and 2F. As shown in FIG. 1, this elevator apparatus includes a hoistway 1, a control panel 2, a basket 3, a direction limiter 4, a forced stop device 5, a shock absorber 6, a switching means 7, and a position detection. Means 8 and a motor 9 are provided.

  The hoistway 1 is a space provided in the building where the car 3 moves up and down.

  The control panel 2 is installed on the uppermost floor portion of the hoistway 1, and the destination provided in the switching means 7, the position detection means 8, the first stop means (direction limiting device 4 and forced stop device 5), and the basket 3. Based on signals received from floor buttons (not shown) and call buttons (not shown) provided on each floor, the rotation of the motor 9 is controlled to control the raising and lowering of the car 3 in the hoistway 1. .

  The control panel 2 has an operation mode and an inspection mode as the control state of the basket 3. The operation mode is a control state during normal operation of the elevator apparatus, that is, a control state when the user is transported by the car 3. In the operation mode, the control panel 2 raises and lowers the car 3 according to the signal received from the destination floor button or the call button. The inspection mode is a control state when the control panel 2 is inspected. The control in the inspection mode will be described later.

  The basket 3 is controlled by the control panel 2 and moves up and down in the hoistway 1. The cage 3 has two doorways provided in opposite directions in FIG. 1, and the doorways different between 1F and 2F open and close. In the basket 3, an opening / closing button and a destination floor button are provided. The car 3 moves up and down in an ascending / descending stroke defined by the landing position on the first floor and the landing position on the second floor in the operation mode.

The direction limiting device 4 and the forced stop device 5 constitute first stopping means for stopping the cage 3 that has reached a specified position that defines the range in which the cage 3 can be raised and lowered in the hoistway 1. The liftable range is a range in which the cage 3 is set to be able to move up and down in the operation mode, and the specified position is the lower end of the liftable range, and the liftable range is specified above the specified position. Is done. In Figure 1, the broken line _{L 1} indicates a defined position. In the operation mode, the car 3 normally moves up and down in the ascending / descending stroke between the landing position on the first floor and the landing position on the second floor, and stops at the first floor or the second floor. The first stopping means functions as a safety device that stops the car 3 when the car 3 that has been lowered cannot be stopped at 1F and is lowered beyond the lower end of the lifting / lowering stroke for some reason. For this reason, the 1st stop means is always validated in operation mode.

Direction restriction device 4 is a device that limits the passage direction of the car 3 has reached the specified position L _1. Specifically, the direction restriction device 4 detects that the car 3 has reached a predetermined position L _1, and transmits the first detection signal to the control panel 2. When receiving the first detection signal, the control panel 2 stops the rotational drive of the motor 9 and stops the basket 3 by software control.

Suspended device 5 is a device for stopping the car 3 has reached the predetermined position L ₁ forcibly. Suspended device 5, when detecting that the car 3 has reached a predetermined position L _1, and transmits the second detection signal to the control panel 2. When the control panel 2 receives the second detection signal, the control panel 2 forcibly stops the car 3 by cutting off the safety circuit (or the power of the motor 9).

By providing the direction limiting device 4 and the forced stop device 5, even if the lowered basket 3 cannot be stopped at 1F for some reason and descends beyond the lower end of the lifting / lowering stroke, the specified position L ₁ is reached. Thus, the cage 3 can be stopped, and the safety of the elevator apparatus can be improved. In addition, the structure provided only with any one of the direction limit apparatus 4 and the forced stop apparatus 5 as a 1st stop means is also possible.

  The shock absorber 6 is provided at the lower end (floor surface) of the hoistway 1 and is constituted by a spring or a hydraulic damper. When the basket 3 cannot be decelerated, the shock absorber 6 comes into contact with the lower surface of the basket 3 to reduce the impact.

  The switching means 7 is a device that switches the control state of the control panel 2 between the operation mode and the inspection mode. As the switching means 7, for example, an operation button (or physical button) provided in the cage 3 or in the hall of each floor, or an inspection terminal that can communicate with the control panel 2 from the outside of the hoistway 1 can be used. Not limited to this.

  A maintenance person of the control panel 2 operates the switching means 7 to input a switching signal when inspecting the control panel 2, and the control panel 2 switches the operation state from the operation mode to the inspection mode according to the switching signal. In the case of this embodiment, since the control panel 2 is installed on the uppermost floor portion of the hoistway 1, the maintenance staff gets on the cage 3 from 2F when checking the control panel 2. Therefore, the switching means 7 is preferably provided in a 2F hole as shown in FIG.

  The position detection means 8 detects the position of the cage 3 in the hoistway 1 and transmits the detected position information to the control panel 2. As the position detecting means 8, for example, a pulse generator attached to the motor 9 can be used. In this case, the position of the cage 3 is represented by the count value of the pulses generated by the pulse generator. Note that the position detection means 8 is not limited to this, and may have any configuration that can detect the position of the cage 3.

  The motor 9 is provided in the upper part of the hoistway 1, and the rotation drive is controlled by the control panel 2. By rotating the motor 9, a wire rope connecting the cage 3 and a counterweight (not shown) is wound up, and the cage 3 moves up and down. A configuration in which the motor 9 is provided below the hoistway 1 is also possible.

  Next, operation | movement of the elevator apparatus which concerns on this embodiment is demonstrated with reference to FIG.2 and FIG.3. FIG. 2 is a flowchart showing a control method of the elevator apparatus according to the present embodiment. Below, the control at the time of the inspection work start of the control panel 2 is demonstrated.

  When starting the inspection work of the control panel 2, the maintenance staff first operates the switching means 7 and transmits a switching signal to the control panel 2 (step S1). When the switching signal is received from the switching means 7, the control state of the control panel 2 is switched from the operation mode to the inspection mode (step S2), and the control panel 2 invalidates the first stop means (step S3).

The control panel 2 may invalidate the first stop means by software control, or may invalidate the first stop means by interrupting or short-circuiting the circuit of the first stop means. FIGS. 3A and 3B are diagrams illustrating an example of a short circuit that short-circuits the direction limiting device 4 and the forced stop device 5. When the control state of the control panel 2 is switched from the operation mode to the inspection mode, the switches 41 and 51 are turned ON, and the direction limiter 4 and the forced stop device 5 are short-circuited to be invalidated. Thus, to avoid that the basket 3 has reached the predetermined position L ₁ stops, it is possible to lower than the predetermined position L ₁ of the cage 3.

Next, the control panel 2 starts to lower the car 3 (step S4), and determines whether the car 3 has been lowered to the inspection position (step S5). And the inspection position is a position of the control panel 2 and the cage 3 and the inspection can basket 3 of the control panel 2 without overlapping, lower than the specified position L _1, i.e., preset outside the lift range Yes. In Figure 1, dashed line _{L 2} indicates the inspection position.

Control panel 2, while lowering the basket 3 at low speed repeated determination of step S5, if it is determined that the car 3 is lowered to the inspection position L ₂ (YES in step S5), and stops the rotation of the motor 9. Thus, cage 3 stops at the inspection position _{L 2} (step S6). Control panel 2 acquires the position information of the car 3 from the position detecting means 8, by comparing the position information of the car 3 and the inspection position L _2, determines whether the car 3 has descended to the inspection position L ₂ To do.

Incidentally, the inspection position L ₂ may be set to a position the car 3 pushes the damper 6. Further, when the inspection position L ₂ is set lower than the stroke of the shock absorber 6 may be lowered to car 3 Remove the damper 6.

After the car 3 is stopped at the inspection position L _2, maintenance personnel, climb on the car 3 from the hall of 2F. At this time, since the control panel 2 does not overlap with the basket 3, the maintenance staff can inspect the control panel 2.

As described above, according to the elevator apparatus and the control method thereof according to the present embodiment, the inspection position where the inspection operation of the control panel 2 can be performed by temporarily disabling the first stop means during the inspection operation. it can be lowered cage 3 to L _2. Thus, the elevator apparatus, the lifting stroke is short, and by the vertical dimension of the hoistway is small, even if also lowers the car 3 to a specified position L ₁ overlaps the control board 2 and the cage 3 is lowers the car 3 to the inspection position L _2, it is possible to perform the inspection of the control panel 2. Moreover, according to this elevator apparatus control method, it is not necessary to change the vertical dimension of the hoistway 1, and therefore, it can be applied to existing buildings and buildings with a limited height.

In the present embodiment, the control panel 2 is installed on the uppermost floor portion of the hoistway 1, but a configuration in which the control panel 2 is installed on the lowermost floor portion of the hoistway 1 is also possible. In this case, the first stopping means is provided in the upper part of the hoistway 1, and the specified position L ₁ defines the upper end of the range in which the car 3 can be raised and lowered. Control panel 2, when switched to the inspection mode, to disable the first stop means, defined position L ₁ from above the inspection position L _2, i.e., the elevation range basket 3 in advance on the set inspection position L ₂ on the outside of Stop. Maintenance personnel, after the car 3 is stopped at the inspection position L _2, perform the inspection work of the control panel 2.

(Second Embodiment)
Next, the elevator apparatus and control method thereof according to the second embodiment will be described with reference to FIGS. FIG. 4 is a diagram illustrating a schematic configuration of the elevator apparatus according to the present embodiment. As shown in FIG. 4, the elevator apparatus includes a direction limiting device 10. Other configurations are the same as those of the first embodiment.

Direction restriction device 10 is a device for limiting the passing direction of the car 3 reaches the inspection position L _2, constitute a second stop means for stopping the car 3 reaches the inspection position L _2. Specifically, the direction restriction device 10 detects that the car 3 reaches the inspection position L _2, and transmits the third detection signal to the control panel 2. When receiving the third detection signal, the control panel 2 stops the rotation of the motor 9 and stops the cage 3 by software control.

  Next, the operation of the elevator apparatus according to this embodiment will be described with reference to FIG. FIG. 5 is a flowchart showing a control method of the elevator apparatus according to the present embodiment. In FIG. 5, steps S1 to S6 are the same as in the first embodiment.

In this embodiment, in step S5, the control panel 2, by judgment based on the position information of the car 3 from the position detecting means 8, if the car 3 is determined not to be lowered to the inspection position L ₂ (in step S5 NO), it is determined whether a third detection signal has been received (step S7). When the control panel 2 receives the third detection signal (YES in step S7), the control panel 2 stops the rotational driving of the motor 9 and stops the lowering of the car 3 (step S6). If the third detection signal has not been received (NO in step S7), the control returns to step S5.

As described above, according to the present embodiment, the determination as to whether or not the car 3 has been lowered to the inspection position L ₂ is based on the determination based on the position information of the car 3 from the position detection unit 8 and the direction control device 10. Each determination can be made based on whether or not the third detection signal has been received. Therefore, even when the determination based on the position information of the car 3 from the position detecting means 8 do not function properly, it is possible to stop the car 3 reaches the inspection position L _2. Thereby, the safety | security of an elevator apparatus can be improved.

(Third embodiment)
Next, an elevator apparatus and a control method thereof according to the third embodiment will be described with reference to FIGS. FIG. 6 is a diagram illustrating a schematic configuration of the elevator apparatus according to the present embodiment. As shown in FIG. 6, the elevator apparatus includes a forced stop device 11. Other configurations are the same as those of the second embodiment.

Suspended device 11 is a device for forcibly stopping the basket 3 has reached the inspection position L _2, constituting the second stop means with the direction restriction device 10. Suspended device 11 detects that the car 3 reaches the inspection position L _2, and transmits the fourth detection signal to the control panel 2. When the control panel 2 receives the fourth detection signal, the control panel 2 forcibly stops the car 3 by shutting off the safety circuit (or the power of the motor 9). In addition, the structure provided only with the forced stop apparatus 11 as a 2nd stop means is also possible.

  Next, operation | movement of the elevator apparatus which concerns on this embodiment is demonstrated with reference to FIG. FIG. 7 is a flowchart showing a control method of the elevator apparatus according to the present embodiment. In FIG. 7, steps S1 to S7 are the same as in the second embodiment.

  In this embodiment, when the control panel 2 has not received the third detection signal in Step S7 (NO in Step S7), the control panel 2 determines whether or not the fourth detection signal has been received (Step S8). ). When the control panel 2 receives the fourth detection signal (YES in step S8), the control panel 2 forcibly stops the car 3 by cutting off the safety circuit (or the power of the motor 9) (step S6). If the fourth detection signal has not been received (NO in step S8), the control returns to step S5.

As described above, according to the present embodiment, the determination as to whether or not the car 3 has been lowered to the inspection position L ₂ is based on the determination based on the position information of the car 3 from the position detection unit 8 and the direction control device 10. The determination based on whether or not the third detection signal is received and the determination based on whether or not the fourth detection signal is received from the forced stop device 11 can be performed. Therefore, even when the determination based on the position information of the car 3 from the position detecting means 8 do not function properly, it is possible to stop the car 3 reaches the inspection position L _2. Thereby, the safety | security of an elevator apparatus can be improved.

(Fourth embodiment)
Next, an elevator apparatus according to a fourth embodiment will be described with reference to FIG. FIG. 8 is a diagram illustrating a schematic configuration of the elevator apparatus according to the present embodiment. As shown in FIG. 8, the elevator apparatus includes a lift instruction unit 12. Other configurations are the same as those of the first embodiment.

Lifting instructing means 12 instructs the vertical movement of the cage 3 to the control panel 2 from the hoistway within 1, a device for raising and lowering the basket 3 stopped at the inspection position L _2. The maintenance staff operates the lifting / lowering instruction means 12 to transmit a lifting / lowering signal, and the control panel 2 raises / lowers the basket 3 according to the lifting / lowering signal received from the lifting / lowering instruction means 12.

  For example, an inspection terminal capable of communicating with the control panel 2 or an operation switch installed in the hoistway 1 can be used as the ascending / descending instruction unit 12, but is not limited thereto. In FIG. 8, the elevation instruction means 12 is installed on the basket 3.

  With such a configuration, the maintenance staff can manually raise and lower the cage 3 by the elevation instruction means 12 during the inspection work of the control panel 2. Thereby, the upper part and lower part of the control panel 2 can be easily inspected.

In addition, it is preferable that the raising / lowering instruction | indication means 12 is set as the structure which can only raise the basket 3. FIG. This is because if the maintenance person operates the lifting / lowering instruction means 12 to manually lower the cage 3, the cage 3 may be lowered too much and collide with the shock absorber 6 or the lower end (floor surface) of the hoistway 1. Because there is. Such a danger can be avoided by limiting the raising / lowering direction by the raising / lowering instruction | indication means 12 only to upper direction. In the case of limiting the lifting direction of the lift indicating means 12 only above, elevating instructing means 12 preferably comprises a down switch for lowering automatically the basket 3 after rise of the car 3 to the inspection position L _2.

(Fifth embodiment)
Next, an elevator apparatus according to the fifth embodiment and its control will be described with reference to FIGS. FIG. 9 is a diagram illustrating a schematic configuration of the elevator apparatus according to the present embodiment. As shown in FIG. 9, the elevator apparatus includes a person detecting unit 13 and a reporting unit 14. Other configurations are the same as those of the first embodiment.

  The person detection means 13 is a device that detects a person (maintenance person) in the hoistway 1. In FIG. 9, the person detection means 13 is installed on the car 3, but the installation location is arbitrary. Further, a person detection method by the person detection means 13 can be arbitrarily selected.

  For example, the person detection means 13 may detect a person based on information obtained from a sensor such as a human sensor, or may detect a person based on weight information of the cage 3 obtained from a weight sensor mounted on the basket 3. May be detected. Further, the person detecting means 13 may detect a person based on a control signal acquired from the control panel 2. Specifically, when the person detection unit 13 acquires an ON / OFF signal of illumination in the hoistway 1 from the control panel 2 and acquires the ON signal, it may be determined that there is a person. When the person detecting means 13 detects a person, the person detecting means 13 transmits a detection signal to the control panel 2.

  The reporting means 14 is a device that receives a detection signal directly from the person detecting means 13 or indirectly through the control panel 2 and issues an alarm when a person is detected by the person detecting means 13. is there. A buzzer, an indicator lamp, or the like can be used as the reporting unit 14. In FIG. 9, the reporting unit 14 is configured integrally with the switching unit 7, but the configuration of the reporting unit 14 is not limited to this.

  Next, the operation of the elevator apparatus according to this embodiment will be described with reference to FIG. FIG. 10 is a flowchart showing a control method of the elevator apparatus according to this embodiment. Below, the control until the control state of the control panel 2 is switched to the inspection mode will be described.

  When the maintenance staff operates the switching means 7 and transmits a switching signal to the control panel 2 (step S1), the person detection means 13 determines whether or not there is a person in the hoistway 1 (step S9). When a person is detected by the person detection means 13 (YES in step S9), the reporting means 14 reports that there is a person in the hoistway 1 (step S10). At this time, the control state of the control panel 2 is not switched to the inspection mode, and the lowering of the basket 3 is not started.

  On the other hand, when the person is not detected by the person detection means 13 (NO in step S9), the control state of the control panel 2 is switched from the operation mode to the inspection mode (step S2). The control after step S2 is the same as in the first embodiment.

  As described above, according to the elevator apparatus and the control method thereof according to the present embodiment, when there is a person in the hoistway 1, the control state of the control panel 2 is not switched to the inspection mode, and the lowering of the car 3 starts. Not. Therefore, the safety of the elevator apparatus can be improved.

  Note that the present invention is not limited to the above-described embodiments as they are, and can be embodied by modifying the components without departing from the scope of the invention in the implementation stage. Moreover, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. Further, for example, a configuration in which some components are deleted from all the components shown in each embodiment is also conceivable. Furthermore, you may combine suitably the component described in different embodiment.

1: hoistway, 2: control panel, 3: basket, 4: direction limiter, 5: forced stop device, 6: shock absorber, 7: switching means, 8: position detecting means, 9: motor, 10: direction limit Device: 11: Forced stop device, 12: Lifting instruction means, 13: Person detection means, 14: Notification means, 41, 42: Switch, L ₁ : Specified position, L ₂ : Inspection position

Claims (5)

A basket that goes up and down the hoistway;
Control the raising and lowering of the basket, a control panel having an operation mode and an inspection mode as a control state,
First stopping means for stopping the basket that has reached a specified position that defines a range in which the cage can be raised and lowered in the hoistway;
Switching means for switching the control state of the control panel from the operation mode to the inspection mode;
Position detecting means for detecting the position of the cage in the hoistway;
With
When the control state of the control panel is switched from the operation mode to the inspection mode by the switching unit, the control panel invalidates the first stop unit and based on the position information of the cage acquired from the position detection unit. An elevator device that raises and lowers the basket to a predetermined inspection position set outside the up and down range. The elevator apparatus of Claim 1 provided with the 2nd stop means to stop the said basket which reached the said inspection position. The second stop means includes a direction restriction means for restricting the raising and lowering direction of the basket that has reached the inspection position, a forced stop means for forcibly stopping the basket that has reached the inspection position,
The elevator apparatus according to claim 2, wherein: The elevator apparatus according to any one of claims 1 to 3, further comprising a basket lifting / lowering instruction unit that instructs the control panel to raise / lower the basket from within the hoistway. A person detecting means for detecting a person in the hoistway;
A reporting means for issuing an alarm when a person is detected by the person detecting means;
Further comprising
The elevator apparatus according to any one of claims 1 to 4, wherein when a person is detected by the person detection means, switching from the operation mode to the inspection mode is invalidated.

Images