JP2004175560A - Operation control device for elevator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To secure the safety of a worker who performs inspection work in a hoistway by preventing the continuous operation of a car by switching operation. <P>SOLUTION: A car position detecting switch 17 is installed near the upper end of the hoistway 11, and inching operation which limits the moving distance of the car by the operation of an ascent switch 16b at that time to a fixed distance or less is performed when detecting that the car 12 is within a prescribed range D from the installation place. Consequently, even if the worker continuously operates the switch by mistake near the upper end of the hoistway or switch abnormality such as a contact failure occurs, the continuous operation of the car 12 is prevented to secure the safety of the worker. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an operation control device used in, for example, a machine room-less type elevator, and is particularly suitable for use when an operator manually operates a switch in an hoistway to move a car to perform an inspection operation. The present invention relates to an operation control device for an elevator.
[0002]
[Prior art]
The elevator can be operated only under the condition that a safety circuit including safety switches arranged in the entire elevator system is established in order to ensure the safety of the user. This safety circuit operates in the same manner during maintenance and inspection work, and ensures the safety of workers during inspection work in the hoistway. In this case, under the condition that the above safety circuit is established, the car moves by the operator operating the switch for inspection work to the driving side, and the car stops by operating the inspection operation switch to the stop side. By operating the switch manually, the car can be arbitrarily operated / stopped.
[0003]
Usually, a push-down switch is used as such a switch for inspection work, and the car moves only while an operator presses the switch, and stops when the operator releases the switch. A safety switch called a limit switch is provided near the end of the hoistway (upper end and lower end). When the safety switch is activated, the above safety circuit is established and the car is operated. Is stopped.
[0004]
[Problems to be solved by the invention]
As described above, various safety devices are added to an elevator. However, in recent elevator systems, a machine room-less type (a machine room in a hoistway) is used in order to minimize the area occupied by an elevator in a building. Elevators without elevators) have become widespread, and the overhead dimensions at the top of the hoistway (the gap between the top of the car and the top of the hoistway when the car arrives at the top floor) tend to be minimized accordingly. It is in. Therefore, it is conceivable that the car approaches the upper end of the hoistway before the safety switch installed at the end of the hoistway operates.
[0005]
Workers are working with due consideration to such dangers, but they concentrate too much on inspection work. For example, the switch for inspection work is kept ON or the switch is ON due to poor contact of the switch. If it is left, the car may be operated continuously and may suddenly approach the upper end of the hoistway. In such a case, if there is not enough space at the upper end of the hoistway as in an elevator of a machine room-less type, there is a risk that an operator may be caught between the rider and the upper end of the hoistway.
[0006]
Conventionally, there has been known a method of detecting the presence of a worker on a car and controlling the operation of the car by manual operation. There is no such thing as preventive driving.
[0007]
The present invention has been made in view of the above points, and prevents continuous operation of a car by operating a switch to ensure the safety of workers performing inspection work in a hoistway. It is an object of the present invention to provide an elevator operation control device.
[0008]
[Means for Solving the Problems]
The elevator operation control device according to claim 1 of the present invention intermittently controls the moving distance of the car by operating a switch when the car is at a specific place in the hoistway to intermittently operate the car. It is characterized by comprising control means for driving.
[0009]
According to such a configuration, when the car is at a specific place in the hoistway, the car is operated with the travel distance of the car limited by the switch operation. Continuous operation can be prevented, and the safety of workers can be ensured.
[0010]
In addition, the elevator operation control device according to claim 2 of the present invention includes a car moving in the hoistway, a switch for inspection work for moving the car, and a specific place in the hoistway. Installed, a car position detecting means for detecting that the car is present within a predetermined range from the location, and the car position detecting means detecting that the car is present within the predetermined range. When the switch is operated in this state, the system is provided with control means for intermittently operating the car by limiting the distance that can be moved by one operation to a certain distance or less.
[0011]
According to such a configuration, when a car is in a predetermined range of the hoistway, even if the switch is operated, the distance that can be moved by one operation is limited to a certain distance or less. In addition, it is possible to prevent the car from being continuously operated due to a switch operation error or the like, thereby ensuring the safety of the worker.
[0012]
In addition, the elevator operation control device according to claim 3 of the present invention includes a car moving in the hoistway, a switch for inspection work for moving the car, and a switch near the upper end of the hoistway. Car position detecting means for detecting that the car is present within a predetermined range from the installation location, and detecting that the car exists within the predetermined range by the car position detecting means. Control means for intermittently operating the car by limiting the distance that can be moved in the direction of the upper end of the hoistway by a single operation when the switch is operated in a closed state, to a certain distance or less. And is configured.
[0013]
According to such a configuration, by installing the car position detecting means near the upper end of the hoistway, the movement of the car by the switch operation near the upper end of the hoistway is regulated, and the worker's movement is prevented. Safety can be ensured.
[0014]
In addition, the elevator operation control device according to claim 4 of the present invention includes a car moving in the hoistway, a check switch for moving the car, and a switch near the lower end of the hoistway. Car position detecting means for detecting that the car is present within a predetermined range from the installation location, and detecting that the car exists within the predetermined range by the car position detecting means. Control means for intermittently operating the car by limiting the distance that can be moved toward the lower end of the hoistway by a single operation when the switch is operated in a closed state And is configured.
[0015]
According to such a configuration, by installing the car position detecting means near the lower end of the hoistway, the movement of the car by the switch operation near the lower end of the hoistway is regulated, and the worker's movement is prevented. Safety can be ensured.
[0016]
The elevator operation control device according to claim 5 of the present invention is an elevator operation control device that moves the car in a slidable manner together with a counterweight via a rope wound around a hoist, A switch for inspection work to be moved, installed at a place where the car and the counter weight of the hoistway cross each other, and detects that the car is present within a predetermined range from the installation location. When the switch is operated in a state where the car is detected to be within the predetermined range by the car position detecting means, the hoistway is operated by one operation. Control means for intermittently operating the car by limiting the distance that can be moved in the upper end direction or the lower end direction to a certain distance or less. Constructed.
[0017]
According to such a configuration, by installing the car position detecting means at a place where the car on the hoistway and the counter weight intersect, the upper end or lower end of the car by the switch operation at the intersection is provided. It is possible to secure the safety of the worker by restricting the movement in the part direction.
[0018]
According to a sixth aspect of the present invention, the control means limits the moving distance of the car by the switch operation stepwise according to the position of the car.
[0019]
According to such a configuration, for example, the movement distance of the car by a switch operation near the upper end of the hoistway is greatly limited as the car approaches the upper end of the hoistway, thereby further improving safety. Can be.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0021]
(1st Embodiment)
FIG. 1 is a diagram showing a configuration of an elevator according to a first embodiment of the present invention, and shows a schematic configuration of a machine room-less type elevator. In the figure, 10 is a control device for controlling the operation of the elevator, 11 is the hoistway of the elevator, 11a is the upper end of the hoistway 11, and 11b is the lower end (pit portion) of the hoistway 11.
[0022]
Reference numeral 12 denotes a car, reference numeral 13 denotes a hoist, reference numeral 14 denotes a main rope, and reference numeral 15 denotes a counterweight (balance weight). The car 12 moves up and down in the hoistway 11 via the main ropes 14 by driving of the hoisting machine 13. In the example shown in FIG. 1, a car 12 is connected to one end of a main rope 14 wound around a rotating shaft (sheave) of a hoisting machine 13, and a counterweight 15 having a predetermined weight is connected to the other end. With the driving of the machine 13, the car 12 and the counterweight 15 move vertically in opposite directions to each other via the main ropes 14.
[0023]
Reference numeral 16 denotes a switch device for inspection work, which is used when a worker performs maintenance and inspection in the hoistway 11. The switch device 16 has an inspection switch 16a for switching between the normal operation mode and the inspection operation mode, an up switch 16b for operating the car 12 in an up operation, and a down switch 16c for operating the car 12 in an down operation. When the worker performs maintenance and inspection of the elevator, first, the inspection switch 16a provided on the switch device 16 is operated to switch from the normal operation mode to the inspection operation mode, and then the up switch 16b or the down switch 16c is operated. Inspection work is performed while moving the car 12 in an arbitrary direction while operating.
[0024]
These switches 16a to 16c are, for example, push-down switches. For example, in the case of the inspection switch 16a, a switch signal between the inspection operation mode and the inspection operation mode is output to the control device 10 each time the switch is pressed once. It is configured. The up switch 16b and the down switch 16c are configured so that an up or down operation command signal is continuously output to the control device 10 while an operator presses down these switches.
[0025]
The control device 10 receives the operation command signal and drives and controls the hoist 13 to move the car 12 up or down. However, the car 12 is located within a predetermined range of the hoistway 11 as described later. While the switch is operating, the distance that can be moved by a single operation of the switch is limited to a certain distance or less, thereby preventing continuous operation of the car 12 due to the switch operation. Such a method of intermittently driving the car 12 while keeping the movement of the car 12 at a certain distance or less is referred to as “inching operation”.
[0026]
A car position detection switch 17 is provided in the hoistway 11 to define a range in which the jogging operation is performed. The car position detection switch 17 includes, for example, a limit switch or an optical sensor, and detects that the car 12 ascending toward the upper end portion 11a of the hoistway 11 enters a predetermined range D, and detects the detection signal. Is output to the control device 10. The predetermined range D has a sufficient length for the worker to work while standing on the car 12 near the upper end of the hoistway.
[0027]
Here, the control device 10 has an operation control function 10a, and is provided in the switch device 16 while the car position detection switch 17 is ON, that is, while the car 12 is within the predetermined range D. The operation of the car 12 is controlled by limiting the movable distance of the car 12 to a certain distance or less by one operation (one press) of the lift switch 16b.
[0028]
FIG. 2 is a diagram illustrating a functional configuration of the control device 10 according to the first embodiment. In the figure, reference numeral 21 denotes a safety circuit for determining whether or not the elevator operation is possible based on various safety device states added to the elevator system. Reference numeral 22 denotes a state in which the safety circuit 21 is established, which is common to the normal operation and the inspection operation. This is a common circuit used in.
[0029]
Reference numeral 23 denotes a normal operation circuit used during normal operation, and reference numeral 24 denotes an inspection operation circuit used during inspection operation. The normal operation circuit 23 and the inspection operation circuit 24 are switched by the inspection switch 16a. Reference numeral 25 denotes an inspection operation relay contact (normally closed contact). The inspection operation relay contact 25 is normally closed, and is opened when an inspection operation relay 29 described later is energized. Reference numeral 26 denotes a rising operation relay 26 connected to the terminal of each of the circuits 21 to 24 via an inspection operation relay contact 25. When the ascending operation relay 26 is energized, the elevator car 12 ascends.
[0030]
27 is a delay circuit, and 28 is a delay circuit contact (normally open contact). The delay circuit 27 is activated when both the car position detection switch 17 provided near the upper end 11a of the hoistway and the lift switch 16b provided in the switch device 16 are ON. It is configured to close. An inspection operation relay 29 is energized when the delay circuit contact 28 is closed. When the inspection operation relay 29 is energized, the inspection operation relay contact 25 is opened, and accordingly, the energization of the ascending operation relay 26 is cut off and the operation is stopped.
[0031]
In such a configuration, at the time of normal elevator operation, the inspection switch 16a is connected to the normal operation circuit 23 side, and the inspection operation relay contact 25 is in a closed state. Therefore, the ascending operation relay 26 is energized, and normal elevator operation is performed.
[0032]
Here, consider the case where the inspection switch 16a is switched to the inspection operation circuit 24 side. The inspection switch 16a is actually provided on the switch device 16 together with the up switch 16b and the down switch 16c as shown in FIG. 1, and these switches 16a to 16c are manually operated by an operator. That is, when performing maintenance and inspection, the operator first operates the inspection switch 16a to switch from the normal operation mode to the inspection operation mode. Then, while operating the raising switch 16b or the lowering switch 16c, the car 12 is raised / lowered to perform the inspection work. The following description will be made on the assumption that the up switch 16b is operated.
[0033]
When the lift switch 16b is operated, if the car 12 is located away from the upper end 11a of the hoistway 11, for example, near the center of the hoistway 11, the car position detection switch 17 is OFF. The operation relay 29 is not energized. Therefore, the inspection operation relay contact 25, which is a normally closed contact, remains closed, and the ascending operation relay 26 is energized, and the car 12 rises toward the upper end 11a of the hoistway 11. The raising operation of the car 12 at this time is continuously performed while the raising switch 16b is operated. That is, while the worker is pressing the lift switch 16b, the car 12 continues to rise at the predetermined speed.
[0034]
Next, the operation when the same inspection operation is performed in a state where the car 12 approaches the upper end 11a of the hoistway 11 will be described.
[0035]
When the car 12 rises in the direction of the upper end 11a of the hoistway 11 and enters a predetermined range D shown in FIG. 1, the car position detection switch 17 installed in the hoistway 11 is turned on. When the ascending switch 16b is operated with the car position detecting switch 17 turned on, the delay circuit 27 is activated, and when a preset time (for example, one second) elapses, the delay circuit contact 28 is closed and inspected. The operation relay 29 is energized. When the inspection operation relay 29 is energized, the inspection operation relay contact 25 is opened, and accordingly, the energization of the ascending operation relay 26 is released, and the car 12 is stopped. That is, in the predetermined range D, the operation of the car 12 automatically stops after a predetermined time has elapsed since the operation of the lift switch 16b.
[0036]
Assuming that the movable distance of the car 12 at this time is L, for example, when the acceleration V of the elevator is 0.2 [m / s] and the delay time T set in the delay circuit 27 is 1 [s]. To
L = V * T
= 0.2 [m]
It becomes. This means that even if the ascending switch 16b is operated continuously, a single switch operation moves only 0.2 [m] at maximum. The moving distance L can be arbitrarily changed by changing the delay time T of the delay circuit 27.
[0037]
When the car 12 is to be raised again, the lift switch 16b may be turned off once and then turned on again. Thereby, the energized state of the inspection operation relay 29 is temporarily released, the inspection operation relay contact 25 is closed, the ascending operation relay 26 is energized, and the car 12 rises toward the upper end 11 a of the hoistway 11. At this time, since the car position detection switch 17 is in the ON state, the movable distance is limited by one operation of the lift switch 16b, and only a predetermined distance is moved even if the lift switch 16b is continuously pressed, as described above. . The car position detection switch 17 is turned on when the car 12 rises and enters a predetermined range D, and the ON state is maintained while the car 12 is in the predetermined range D. Is turned off when the vehicle comes out of the range D by the descending operation.
[0038]
As described above, when the car 12 approaches the hoistway upper end 11a and enters the predetermined range D, the operation is switched to the jogging operation, and the distance that can be moved by one operation of the ascent switch 16b is reduced to a certain distance or less. The car 12 is lifted and operated with the restriction. Therefore, for example, when the worker on the car 12 concentrates on the inspection work, the operator may erroneously keep pressing the lift switch 16b or the contact may not be turned off due to poor contact of the lift switch 16b. Even if a switch abnormality occurs, the car 12 temporarily stops after moving a predetermined distance, so that an accident in which an operator is pinched between the car 12 and the upper end 11a of the hoistway 11 is anticipated. Can be prevented and the work can be continued with peace of mind.
[0039]
In the above-described embodiment, the car position detection switch 17 is installed near the upper end 11a of the hoistway 11, and the jogging operation is performed when the car 12 is in the predetermined range D. The car position detection switch 18 is installed near the lower end portion (pit portion) 11b of the hoistway 11 as shown in FIG. 2 to detect that the car 12 is within a predetermined range E from the hoistway lower end portion 11b. It is also possible to perform the same jogging operation. In this case, when the down switch 16c is operated with the car position detection switch 18 turned on, the down operation is stopped after a predetermined time has elapsed. The car position detection switch 18 is turned on when the car 12 descends and enters a predetermined range E, and the ON state is maintained while the car 12 is in the predetermined range E. It turns off when the vehicle escapes from the range E by the ascending operation.
[0040]
In this way, by performing the same inching operation in the vicinity of the lower end 11b of the hoistway 11 as described above, when the operator is performing inspection work in the pit section, an operation error of the down switch 16c or abnormal switch contact may occur. Accordingly, it is possible to prevent the car 12 from being continuously operated, thereby preventing the car 12 from approaching the lower end portion 11b suddenly, and ensuring the safety of the worker.
[0041]
Also, in a place where the car 12 and the counterweight 15 intersect, if the car 12 is driven up, the counterweight 15 will come down from above the head. It is very dangerous to have something like embarking. Therefore, as shown in FIG. 4, a car position detection switch 19 is installed at a place where the car 12 and the counter weight 15 of the hoistway 11 intersect, and it is detected that the car is in a predetermined range F from the installation location. Then, the same jogging operation as described above may be performed. In this case, the ascending operation of the car 12 is stopped after a predetermined time has elapsed when the ascent switch 16b is operated with the car position detection switch 19 turned on.
[0042]
Further, it is possible to perform not only the ascending operation of the car 12 at the intersection but also the inching operation similar to the above at the time of the descending operation. In this case, when the descent switch 16c is operated in a state where the car position detection switch 19 is turned on, the descent and ascent operation of the car 12 is stopped after a predetermined time has elapsed.
[0043]
(Second embodiment)
Next, a second embodiment of the present invention will be described.
[0044]
FIG. 5 is a diagram showing a configuration of an elevator according to a second embodiment of the present invention, and the same parts as those in FIG. 1 (first embodiment) are denoted by the same reference numerals. 5 differs from the configuration of FIG. 1 in that a plurality (three in this case) of car position detection switches 17a, 17b, and 17c are arranged at predetermined intervals near the upper end 11a of the hoistway 11. It is. These car position detection switches 17a, 17b, and 17c comprise limit switches, optical sensors, and the like, similarly to the car position detection switch 17, and detect that the car 12 has entered a predetermined range at each location. It is configured to output the detection signal to the control device 10.
[0045]
Here, as shown in FIG. 6, the car position detection switch 17a detects that the car 12 has entered the range D1 while the car 12 rising toward the upper end 11a of the hoistway 11 is to be detected. The car position detection switch 17b detects that the car 12 has entered the range D2, and the car position detection switch 17c detects that the car 12 has entered the range D3. The range D3 has a sufficient length for the worker to work while standing on the car 12 near the upper end of the hoistway.
[0046]
FIG. 7 is a diagram illustrating a functional configuration of the control device 10 according to the second embodiment, in which the same components as those in FIG. 2 (first embodiment) are denoted by the same reference numerals. 7 differs from the configuration of FIG. 2 in that a car position detection switch 17a, 17b, 17c and a delay circuit 30 operated by these switches 17a, 17b, 17c are provided.
[0047]
The delay circuit 30 has a function of changing the time to close the delay circuit contact 31 according to the state of the car position detection switches 17a, 17b, 17c. Using the delay circuit 30, for example, three seconds after the car position detection switch 17a is turned on, two seconds after the car position detection switch 17b is turned on, one second after the car position detection switch 17c is turned on, and so on. By setting the time to close the delay circuit contact 31 stepwise short, as the car 12 approaches the hoistway upper end 11a, it is possible to reduce the movable distance of the car 12 at that time. Realize.
[0048]
Hereinafter, an operation according to the second embodiment will be described.
[0049]
Similarly to the first embodiment, during normal elevator operation, the inspection switch 16a is connected to the normal operation circuit 23, and the inspection operation relay contact 25 is closed. Therefore, the ascending operation relay 26 is energized, and normal elevator operation is performed.
[0050]
Here, when the check switch 16a is switched to the check operation circuit 24 side, when the lift switch 16b is operated, the car 12 moves away from the upper end 11a of the hoistway 11, for example, near the center of the hoistway 11. If the vehicle is in the place, the car position detection switches 17a to 17c are turned off, and the inspection operation relay 29 is not energized. Therefore, the inspection operation relay contact 25, which is a normally closed contact, remains closed, and the ascending operation relay 26 is energized, and the car 12 rises toward the upper end 11a of the hoistway 11. The raising operation of the car 12 at this time is continuously performed while the raising switch 16b is operated. That is, while the worker is pressing the lift switch 16b, the car 12 continues to rise at the predetermined speed.
[0051]
Next, the operation when the same inspection operation is performed in a state where the car 12 approaches the upper end 11a of the hoistway 11 will be described.
[0052]
When the car 12 rises in the direction of the upper end 11a of the hoistway 11 and enters a predetermined range D1 shown in FIG. 6, first, the car position detection switch 17a installed in the hoistway 11 is turned on. When the ascending switch 16b is operated with the car position detecting switch 17 turned on, the delay circuit 30 having a delay time changing function is activated, and when a preset time (for example, 3 seconds) elapses, the delay circuit is operated. The contact 31 is closed and the inspection operation relay 29 is energized. When the inspection operation relay 29 is energized, the inspection operation relay contact 25 is opened, and accordingly, the energization of the ascending operation relay 26 is released, and the car 12 is stopped.
[0053]
When the lift switch 16b is operated again and the car 12 rises again and enters the predetermined range D2 shown in FIG. 6, the car position detection switch 17b is turned on. At this time, the car position detection switch 17a remains ON. The ON state of the car position detection switch 17a is maintained while the car 12 is in the predetermined range D1, and is turned off when the car 12 moves in the opposite direction by the descending operation and exits from the range D1. The same applies to the car position detection switches 17b and 17c installed at other places. The car position detection switches 17b and 17c are ON while the car 12 exists in the respective detection target ranges D2 and D3, and the car 12 is moved down by the descending operation. It is assumed that it is turned off when it comes out of the ranges D2 and D3.
[0054]
Here, when the car position detection switch 17b is turned on as the car 12 enters the range D2, the delay time set in the delay circuit 30 is changed, and the delay circuit contact 31 is closed after a lapse of time after the change. . In this case, the time is changed to a shorter time (for example, 2 seconds) than when only the car position detection switch 17a is turned ON. When the delay circuit contact 31 is closed in this way, the inspection operation relay 29 is energized, and accordingly, the inspection operation relay contact 25 is opened, the energization of the ascending operation relay 26 is released, and the car 12 is stopped.
[0055]
When the car 12 enters the predetermined range D3 shown in FIG. 6 and the car position detection switch 17c installed closest to the upper end 11a of the hoistway 11 is turned on, the delay circuit 30 is set. The delay time is changed to a shorter time (for example, 1 second). Then, after a lapse of time after the change, the delay circuit contact 31 is closed, the inspection operation relay 29 is energized, and accordingly, the inspection operation relay contact 25 is opened, the energization of the ascending operation relay 26 is released, and the car 12 stops. State.
[0056]
Here, assuming that the movable distance in the range D1 of the car 12 is L1, the movable distance in the range D2 is L2, and the movable distance in the range D3 is L3, for example, the acceleration of the elevator is 0.2 [m]. / S] and the delay time set in the delay circuit 27 is changed to 3 [s], 2 [s], 1 [s], etc.
L1 = 0.6 [m]
L2 = 0.4 [m]
L3 = 0.2 [m]
It becomes. As described above, as the car 12 approaches the upper end 11a of the hoistway 11, the moving distance of the car 12 by the switch operation becomes shorter, and even when the lift switch 16b is operated at the position closest to the upper end 11a, the rider can ride. Since the car 12 moves only slightly, even when the hoistway upper end 11a is approaching, the worker can perform the operation with peace of mind.
[0057]
The stepwise jogging operation according to the second embodiment is not limited to the vicinity of the upper end 11a of the hoistway 11, but may be the vicinity of the lower end 11b of the hoistway 11 as shown in FIG. The present invention can be applied to a place where the car 12 and the counterweight 15 of the hoistway 11 intersect with each other, and the same effect as described above can be obtained.
[0058]
【The invention's effect】
As described above, according to the present invention, it is detected that the car is located at a specific place such as the upper end of the hoistway, and the moving distance of the car by the switch operation at that time is limited to intermittently move the car. For example, when a car is approaching the upper end of the hoistway, workers may accidentally operate the switches continuously, or switch failures such as poor contact may occur. Even if it occurs, continuous operation of the car can be prevented, and the safety of the worker can be ensured.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of an elevator according to a first embodiment of the present invention.
FIG. 2 is a diagram showing a functional configuration of a control device provided in the elevator.
FIG. 3 is a diagram showing a configuration for jogging a car near the lower end of a hoistway of the elevator.
FIG. 4 is a diagram showing a configuration for jogging a car at a place where a car on the elevator shaft and a counter weight intersect.
FIG. 5 is a diagram showing a configuration of an elevator according to a second embodiment of the present invention.
FIG. 6 is a diagram showing a configuration for performing a stepwise jogging operation of a car in a second embodiment.
FIG. 7 is a diagram showing a functional configuration of a control device provided in the elevator.
[Explanation of symbols]
10 ... Control device
11 ... Hoistway
12 ... Basket
13 ... Hoist
14 ... Main rope
15 ... Counterweight
16 Switch device
16a… Inspection switch
16b… Up switch
16c ... Down switch
17… Cage position detection switch
21 ... Safety circuit
22 common circuit
23 ... Normal operation circuit
24 Inspection operation circuit
25 Inspection operation relay contact
26 ... Ascending operation relay
27 ... Delay circuit
28 ... Delay circuit contact
29… Inspection operation relay

Claims (6)

Elevator operation, comprising: control means for intermittently operating the car by limiting the travel distance of the car by operating a switch when the car is at a specific place in the hoistway. Control device. A car that moves in the hoistway,
A switch for inspection work to move this car,
A car position detecting means that is installed at a specific place in the hoistway and detects that the car is within a predetermined range from the place;
When the switch is operated in a state where the car is detected to be within the predetermined range by the car position detecting means, the distance that can be moved by one operation is reduced to a certain distance or less. Control means for intermittently operating the car with restriction. A car that moves in the hoistway,
A switch for inspection work to move this car,
A car position detecting means that is installed near the upper end of the hoistway and detects that the car is within a predetermined range from the installation location,
When the switch is operated in a state where the car position detecting means detects that the car is within the predetermined range, the car is moved toward the upper end of the hoistway by one operation. Control means for intermittently operating the car by limiting a possible distance to a certain distance or less. A car that moves in the hoistway,
A switch for inspection work to move this car,
A car position detecting means installed near the lower end of the hoistway to detect that the car is within a predetermined range from the installation location,
When the switch is operated in a state where the car position detecting means detects that the car is within the predetermined range, the car is moved toward the lower end of the hoistway by one operation. Control means for intermittently operating the car by limiting a possible distance to a certain distance or less. In an elevator operation control device for moving a car in a slidable manner together with a counterweight through a rope wound around a hoist,
A switch for inspection work for moving the car,
A car position detecting means installed at a place where the car and the counter weight of the hoistway intersect with each other, and detecting that the car is present within a predetermined range from the installation place,
When the switch is operated in a state where the car is detected to be within the predetermined range by the car position detecting means, a single operation of the switch causes the upper end or the lower end of the hoistway to be operated. Control means for intermittently operating the car by limiting the distance that can be moved in the direction of the vehicle to a certain distance or less. The elevator operation control device according to any one of claims 1 to 5, wherein the control means limits the moving distance of the car by the switch operation in a stepwise manner according to the position of the car. .

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