JP4952579B2 - Elevator car shake detection device - Google Patents

Description

  The present invention relates to an elevator car shake detection apparatus, and more particularly to an elevator car shake detection apparatus for suppressing forced vibration caused by mischief of passengers in a car and preventing an elevator safety device from operating. It is.

In general, elevators are forced to vibrate due to mischief of passengers, and when the vibrations become significant, the safety device operates, leading to an accident where the passengers are trapped in the car.
Conventionally, in order to prevent a confinement failure by detecting a relatively small shake before the car shake becomes large, a shake detector that detects a vertical shake above a specified value on the car. There is also known an elevator car sway alarm device that includes an alarm means for issuing an alarm based on the output of the sway detector and is intended to give attention to passengers (for example, Patent Document 1).

Japanese Unexamined Patent Publication No. 9-202560

  However, in the conventional car shake alarm device, when the elevator stroke or capacity changes, the specified value for detecting and judging the car shake must be changed each time. In general, elevators have different mechanical characteristics due to the difference in lift and capacity depending on the building. For example, the vibration level generated by the forced excitation of one adult increases or decreases according to the up / down stroke and the change in capacity. As a result, there has been a problem that it is very time consuming to set a prescribed value for determining car sway for each elevator. In addition, in order to save the time and effort of setting, if one elevator standard is represented by one specified value, erroneous detection will occur frequently on models that are prone to large vibrations, and on models that are difficult to increase vibrations. There has also been a problem that variations occur in detection that the car shake detection does not function even though the car is in a dangerous state.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to obtain an elevator car shake detection device for dealing with various elevator models.

The elevator car shake detection apparatus according to the present invention affects the mechanical characteristics of the elevator when the car is shaken by the vibration detection means for detecting the vibration generated in the car and the specified value that is a criterion for judging the car shake. Predefined value reading means for storing in advance according to the operation status of the elevator as a table or relational expression with the elevator specification as a parameter, and automatically selecting a specified value according to the operation status of the elevator using the specification information of the elevator , A car shake determination device is provided that compares the detected value of the vibration detection means with the specified value of the selected specified value reading means and determines the car shake according to the operating condition of the elevator .

Further, the specified value reading means prepares specified values during operation and stop of the elevator as specified values that serve as criteria for judging car shaking .

  Furthermore, when a car shake is determined, an operation command of one of a warning announcement command, a half-speed operation command, a nearest floor stop command, and an emergency stop command is output according to the level of the specified value.

  According to this invention, even when mechanical elements such as elevator lifting / lowering stroke, capacity, speed, etc. have changed by providing a table of prescribed values with the lifting / lowering stroke, capacity, speed, etc. for each elevator as parameters There is no need to set a prescribed value for each elevator, and there is a remarkable effect of reducing false detection and variation in detection of car shaking.

FIG. 1 is a schematic diagram showing the overall configuration of an elevator car shake detection apparatus according to Embodiment 1 of the present invention. FIG. 2 is a block diagram of the elevator car shake detection apparatus according to Embodiment 1 of the present invention. FIG. 3 is a flowchart showing an operation procedure of the elevator car shake detection apparatus according to the first embodiment of the present invention. FIG. 4 is an example of a specified value map of the elevator car sway detector according to the second embodiment of the present invention. FIG. 5 is a block diagram of an elevator car shake detection apparatus according to Embodiment 3 of the present invention. FIG. 6 is a flowchart showing an operation procedure of the elevator car shake detection apparatus according to Embodiment 3 of the present invention. FIG. 7 is a schematic diagram showing the overall configuration of an elevator car shake detection apparatus according to Embodiment 4 of the present invention. FIG. 8 is a schematic diagram showing the overall configuration of an elevator car shake detection apparatus according to Embodiment 5 of the present invention. FIG. 9 is a schematic diagram showing the overall configuration of an elevator car shake detection apparatus according to Embodiment 6 of the present invention. FIG. 10 is a flowchart showing the operation procedure of the elevator car shake detection apparatus in Embodiment 7 of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Passenger car 2 Main rope 3 Hoisting machine 4 Baffle 5 Counterweight 6 Elevator control device 7 Control cable 8 Governor 9 Governor rope 10 Governor tension vehicle 11 Coupling device 12 Vibration detection means (vibration detection sensor)
DESCRIPTION OF SYMBOLS 13 Car shake detection device 14 Specified value reading device 15 Elevator specification storage device 16 Specified value map storage device 17 Car shake determination processing device 18 Warning announcement command means 19 Half speed operation command device 20 Nearest floor stop command means 21 Emergency stop command device 21 22 Weighing device 23 Specified value map resetting device 24 Hoisting machine encoder 25 Governor encoder 26 Shackle part 27 Shackle part vibration detection sensor

  In order to explain the present invention in more detail, it will be described with reference to the accompanying drawings.

  FIG. 1 is a schematic diagram showing the overall configuration of an elevator car shake detection apparatus according to Embodiment 1 of the present invention. The elevator apparatus includes an elevator car 1 that travels along a guide rail in the elevator hoistway and a counterweight 5 that travels in a direction opposite to the car 1 along another guide rail in the elevator hoistway. Further, a main rope 2, an elevator hoisting machine 3, a deflecting wheel 4, an elevator control device 6, a control cable 7, a governor 8, a governor rope 9, a governor tensioning vehicle 10, a connecting device 11, and the like are provided. The car 1 is provided with a vibration detection sensor 12 as vibration detection means for generating a voltage signal in response to vibration generated in the car. A governor rope 9 is wound around the governor 8, and the other end of the governor rope 9 is wound around a governor tensioning wheel 10 installed in the lower part of the hoistway to maintain the tension of the governor rope 9. The governor rope 9 is attached to the car 1 by a connector 11.

  FIG. 2 is an example of a block diagram showing the configuration of the car shake detection device 13. As shown in FIG. 2, the prescribed value reading device 14 stores an elevator specification storage device 15 that stores the elevator stroke and capacity, and a prescribed value that serves as a criterion for swaying the car for each elevator lift and capacity specification. The specified value map storage device 16 is configured. First, by transmitting elevator specification information from the elevator specification storage device 15 to the specified value map storage device 16, a specified value corresponding to the elevator is selected from the specified value map, and the elevator car is shaken. Is stored in the specified value reading device 14, and the stored specified value is transmitted to the car shake determination processing device 17. The car shake determination processing device 17 receives the voltage signal from the vibration detection sensor 12 for detecting the car shake, and determines that the car shakes when the input from the sensor 12 is larger than a specified value. Not only the specified value but also the specified number of times may be stored in the specified value map storage device 16 and used as a criterion. The prescribed value is not limited to one, and several levels may be prepared. Depending on the level of the specified value, the operation after the car shake is detected in the car, and the operation command of either stop at the destination floor or the car call floor at half speed operation, stop at the nearest floor, or emergency stop Put out. Note that 18 is a warning announcement command means, 19 is a half-speed operation command device, 20 is a nearest floor stop command device, and 21 is an emergency stop command device. In FIG. 2, the car shake detection device 13 surrounded by the solid line is illustrated as being mounted in the control device 6 that controls the operation of the elevator, but the vibration detection sensor 12 and the car shake detection device 13 are integrated. May be installed in the car 1. In this case, since only the elevator specification storage device 15 is on the control device 6 side, the information is transmitted to the car shake detection device 13.

FIG. 3 is a flowchart showing an operation procedure of the elevator car shake detection apparatus.
The procedure of step S1 to step S3 performed by the specified value reading device 14 is performed when the elevator is installed. That is, initial setting is started in step S1, elevator specifications such as elevator lift and capacity are stored in the elevator specification storage device 15 in step S2, and the specified value map storage device 16 is stored in the elevator specification storage device 15 in step S3. When the elevator specification information is transmitted to the vehicle, a specified value corresponding to the elevator is selected from the specified value map.
Next, the specified value selected and set is used during elevator operation. When the car shake occurs in the car 1 in step S4, the car shake determination processing device 17 determines in step S5 whether the input signal from the vibration detection sensor 12 is larger than the specified value. If it is greater than the specified value in step S5, it is determined that the car is shaking, and the process proceeds to warning announcement (step S6), half-speed operation (step S7), nearest floor stop (step S8), and emergency stop (step S9). If it is smaller than the specified value in step S5, the process proceeds to step S10 and normal operation is performed.
When the elevator specifications are changed, the specified value reading device 14 operates in the same procedure (S1 to S3) as when the elevator is installed, and the specified value is reset. It can be omitted.

  According to such a configuration, since the specified value used for the car shake determination is automatically set for each elevator, it is possible to save time and labor that are individually set in the conventional elevator. In addition, the automatically set specified value is set to reliably detect the danger of the elevator, so if a mischief occurs in the car, the dangerous state due to car shaking is reliably detected, A malfunction of the governor can be prevented.

In the specified value reading device 14 shown in FIG. 2, the specified value map stored in the specified value map storage device 16 described in the first embodiment is read in the form of a function that uses the elevator travel and capacity specifications as parameters. It may be. FIG. 4 is an example of a relational expression stored in the specified value map storage device 16 when the ascending / descending stroke is used as a parameter. When the up / down stroke and the capacity are transmitted from the elevator specification storage device 15, a function of the specification area is selected, and when the up / down stroke is substituted into the function, a specified value is calculated. In this way, by dividing each elevator specification area and expressing the specified value of that area as a function, it becomes possible to select a value close to the detection level suitable for the elevator specification, suppressing detection variation, False detection can be reduced.
In the example of FIG. 4, the form using the two parameters of the lifting / lowering stroke and the capacity is shown. However, the weight of the car, the type of the hoisting machine, and the like may be prepared in more detail as parameters of the specified value map. Alternatively, the rated speed may be set as a parameter in the specified value map in consideration of the margin until the governor operates.

FIG. 5 is a block diagram of an elevator car shake detection apparatus according to Embodiment 3 of the present invention.
In the first embodiment, the specified value is set once when the elevator is installed, and the specified value is not reset unless the specification is changed. However, since elevators change the weight of a car depending on the number of passengers, the vibration level generated by car shaking also changes. Therefore, in the third embodiment, as shown in FIG. 5, a scale device 22 and a specified value map resetting device 23 are further added to the car shake detecting device 13 of the first embodiment. The specified value once set when the elevator is installed is reset by the number of passengers, and a detection level suitable for the state of the elevator is selected. The number of passengers is measured and detected using a scale device 22 installed in the elevator. In the specified value map resetting device 23, a relational expression having the number of passengers or boarding weight as a parameter is read simultaneously when selecting the default specified value map.

FIG. 6 is a flowchart showing a resetting operation procedure of the elevator car shake detection apparatus.
The procedure from step S11 to step S14 performed by the specified value reading device 14 is such that when the elevator doors are closed and the number of passengers is determined, the task of resetting the specified value is performed once and changed to the specified value that matches the number of passengers. The That is, when the elevator door closing flag is determined in step S11, the number of passengers is measured by the weighing device 22 in step S12, and the predetermined value once set at the time of installing the elevator is reset by the number of passengers in step S13. . If the elevator door closing flag is not determined in step S11, the process proceeds to step S14 and the specified value is not reset.
Once reset, it does not occur while the door is closed, and the same default value is used until the door opens and closes again.
Next, the preset standard value is used during elevator operation. When the car shake occurs in the car 1 in step S4, the car shake determination processing device 17 determines in step S5 whether the input signal from the vibration detection sensor 12 is larger than the specified value. If it is greater than the specified value in step S5, it is determined that the car is shaking, and the process proceeds to warning announcement (step S6), half-speed operation (step S7), nearest floor stop (step S8), and emergency stop (step S9). If it is smaller than the specified value in step S5, the process proceeds to step S10 and normal operation is performed.

FIG. 7 is a schematic diagram showing the overall configuration of an elevator car shake detection apparatus according to Embodiment 4 of the present invention.
In Example 1 of FIG. 1, the vibration detection sensor 12 is attached to the car 1, but in Example 4, as shown in FIG. 7, the car 1 is provided by a hoisting machine encoder 24 provided in the hoisting machine 3. You may use as a vibration detection sensor which detects the shaking of.

FIG. 8 is a schematic diagram showing the overall configuration of an elevator car shake detection apparatus according to Embodiment 5 of the present invention.
In the fifth embodiment, as shown in FIG. 8, a governor encoder 25 provided in the governor 8 may be used as a vibration detection sensor that detects the shaking of the car 1.

FIG. 9 is a schematic diagram showing the overall configuration of an elevator car shake detection apparatus according to Embodiment 6 of the present invention.
In the sixth embodiment, as shown in FIG. 9, in an elevator apparatus having a rope ratio of 2: 1, a shackle portion vibration detection sensor 27 that detects the shaking of the car 1 is attached to the shackle portion 26 at the car hitch end. Good. Although the shackle portion vibration detection sensor 27 is newly provided in the sixth embodiment, the output of a scale sensor that measures the weight of a passenger may be used.

FIG. 10 is a flowchart showing the operation procedure of the elevator car shake detection apparatus in Embodiment 7 of the present invention.
In the seventh embodiment, elevator running and stopping prescribed values are prepared in the map stored in the prescribed value map storage device 16 described in the first embodiment, and are selected according to the elevator specifications. To do. The selected specified value is selected according to the operation status of the elevator. The specified value during stoppage is selected for each elevator stop floor.
The procedures of steps S1, S2 and S21 performed by the specified value reading device 14 are performed when the elevator is installed. That is, initial setting is started in step S1, elevator specifications such as elevator lift and capacity are stored in the elevator specification storage device 15 in step S2, and the specified value map storage device 16 is stored in the elevator specification storage device 15 in step S21. When the elevator specification information is transmitted to the vehicle, the specified values during the traveling and stopping of the elevator are selected from the specified value map.
Next, a specified value selected and set according to the elevator operation status is used. In step S22, it is determined whether the elevator is traveling or stopped. During traveling, a specified value during traveling is selected in step S23, and when the car sways in the car 1 in step S4, the car shake determination processing device 17 determines that the input signal from the vibration detection sensor 12 is greater than the specified value in step S5. Is also determined to be large. If it is greater than the specified value in step S5, it is determined that the car is shaking, and the process proceeds to warning announcement (step S6), half-speed operation (step S7), nearest floor stop (step S8), and emergency stop (step S9). If it is smaller than the specified value in step S5, the process proceeds to step S10 and normal operation is performed.
During the stop, a predetermined value corresponding to the stop floor is selected in step S24, and when the car 1 shakes in the car 1 in step S4, the car shake determination processing device 17 specifies the input signal from the vibration detection sensor 12 in step S5. Determine if it is greater than the value. If it is greater than the specified value in step S5, it is determined that the car is shaking and a warning announcement (step S6) is made. If the shaking is not stopped even after the warning announcement is made, the temporary operation is stopped and the operation is resumed when the shaking is settled and falls below a specified value. If it is smaller than the specified value in step S5, the process proceeds to step S10 and normal operation is performed.

  According to such a configuration, it is possible to set a suitable detection level for an elevator whose vibration characteristics change depending on the operation status such as traveling or stopped, regardless of the operation status of the elevator. In addition, the automatically set specified value is set to reliably detect the danger of the elevator, so if a mischief occurs in the car, the dangerous state due to car shaking is reliably detected, Passenger and equipment safety can be ensured.

  As described above, the elevator car sway detection device according to the present invention is provided with a table of specified values using the elevator specifications as a parameter in advance, so that even when the elevator lift and capacity specifications change, Since it is not necessary to set a specified value and a specified value suitable for each elevator is selected, it is possible to reduce false detection and improve reliability.

Claims (8)

Vibration detecting means for detecting vibration generated in the car;
Predetermined values that serve as criteria for judging car shaking are stored in advance in accordance with the elevator operating conditions as a table or relational expression that uses elevator specifications that affect the mechanical characteristics of the elevator during car shaking as parameters. Specified value reading means for automatically selecting the stipulated value according to the operation status of the elevator using the specification information of
A car shake determination device that compares a detected value of the vibration detection unit with a specified value of the selected specified value reading unit and determines a car shake according to the operation status of the elevator; Elevator car shake detection device. Specified value reading means, as a specified value serving as a criterion of the car rocking, the elevator car of claim 1, wherein the specified value in the stop and during operation of the elevator were respectively prepared shaking detection device. 3. The elevator car sway detection device according to claim 2, wherein the specified value reading means prepares a specified value for each stop floor of the elevator as a specified value as a criterion for determining the car shake. A scale device for detecting the number of passengers in the car;
A specified value reading means for resetting a specified value that is a criterion for car shaking according to the number of passengers or boarding weight of the scale device;
The elevator car sway detection device according to claim 1.   The specified value reading means is composed of an elevator specification storage device that stores elevator lift and capacity and a specified value map storage device that stores specified values for each elevator lift and capacity specification. The elevator car shake detection apparatus according to claim 1. 6. The elevator car shake detection apparatus according to claim 5 , wherein the specified value reading means further prepares the car weight and the type of the hoist as parameters of the specified value map.   3. The elevator car sway detection device according to claim 1, wherein the vibration detecting means is provided in any one of a car, a hoisting machine encoder, a governor encoder, and a shackle portion of a car hitch end. .   An operation command of a warning announcement command, a half-speed operation command, a nearest floor stop command, or an emergency stop command is output according to the level of the specified value when the car shake is determined. The elevator car shake detection apparatus according to claim 1 or claim 2.

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