JP2009256109A - Elevator device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an elevator device capable of easily changing an excessive speed level according to the state of a car. <P>SOLUTION: The elevator device wherein two or more cars travel in the same hoistway, comprises the cars, a partner car relative position detecting means detecting the relative position with the nearest partner car traveling in the same hoistway as the car, and an excessive speed standard deciding means deciding the excessive speed standard of the car according to the relative position between the car detected by the partner car relative position detecting means and the partner car. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to an elevator apparatus.

  FIG. 21 is a diagram showing an elevator safety device disclosed in US Pat. No. 6,170,614. In the safety device 1000, the car position detected by the car position detection device 1002 is transmitted to the microprocessor 1006 of the speed governor 1004. The microprocessor 1006 calculates the car speed based on the car position information. The calculated car speed is compared with the overspeed detection level (limit speed) stored in the memory 1008 of the speed governor 1004. If the car speed exceeds the overspeed detection level, the speed controller 1004 sends an emergency stop device 1010. A signal is transmitted to the emergency stop device 1010 to stop the car.

  FIG. 22 is a diagram showing an elevator apparatus disclosed in Japanese Patent Laid-Open No. 9-165156. In this elevator apparatus 1012, 1014 is an elevator car, 1016 is a hoisting device which is a car drive mechanism, 1018 is a hoisting wire, 1020 is a counterweight, 1022 to 1028 are safety switches, 1030 is an emergency stop device, and 1032 is a guide rail. Reference numeral 1034 denotes a reference driving device, 1036 denotes a cable, and 1038 denotes a trigger unit. In this configuration, when the car 1014 moves up and down, the travel parameters passed to the hoisting device 1016 are also passed to the reference drive mechanism 1034. Therefore, the car 1014 and the trigger unit 1038 of the reference drive mechanism 1034 run side by side next to each other. When a shift occurs between the two and the trigger unit 1038 comes into contact with the safety switch 1022-1028, the hoisting device 1016 is braked or the emergency stop device 1030 is driven according to the contacted safety switch to raise or lower the car 1014. To stop.

  An elevator apparatus disclosed in US Pat. No. 6,170,614 stores a plurality of overspeed detection levels in a memory and selects one overspeed detection level from among the plurality of overspeed detection levels by a microprocessor. By doing so, the overspeed detection level can be changed. References for selecting the overspeed detection level include car position information input to the microprocessor and elevator specification data stored in memory.

  In this publication, an ultrasonic position sensor is cited as an example of means for detecting a car position. However, there is a drawback that ultrasonic waves are easily affected by interference with other devices installed in the hoistway, and the distance that can be measured is limited. In addition, it is difficult to accurately grasp the dimensions of the hoistway and the distance between floors in advance, and it is necessary to save the data in memory by on-site adjustments. Since errors occur or misalignments occur due to changes in building dimensions, it is necessary to change the contents stored in the memory for these errors and misalignments.

  Further, the elevator apparatus described in Japanese Patent Laid-Open No. 9-165156 detects a deviation between the operation speed command value and the operation speed of the car, and when the deviation exceeds a predetermined margin, the emergency stop device is installed. Operate. For this purpose, the trigger part for starting the safety switch on the car side is fixed to the cable of the reference drive mechanism and sent so as to run parallel to the car. However, the operation error of the reference drive mechanism due to long-term use, the accumulation of misalignment due to the slip between the cable and the sheave that supports the cable, etc., and the sheave diameter due to the wear of the sheave that transmits power to the cable, etc. Susceptible to.

US Pat. No. 6,170,614 JP-A-9-165156

  The present invention has been made in order to solve the above problems, and eliminates the on-site adjustment and long-term maintenance, and an elevator apparatus that can easily change the overspeed detection level according to the state of the car. The purpose is to obtain.

In order to achieve this object, the present invention provides:
An elevator apparatus in which two or more cars travel in the same hoistway,
Car and
Opponent car relative position detecting means for detecting the relative position of the nearest opponent car traveling in the same hoistway of the car;
Overspeed reference determining means for determining an overspeed reference of the car based on the relative position of the car and the car detected by the opponent car relative position detecting means;
It is provided with.

The elevator apparatus of the present invention is
A car position detecting means for detecting the position of the car;
Overspeed reference determining means for determining an overspeed reference based on the car position information detected by the car position detecting means;
It is provided with.

The elevator apparatus of the present invention is
A car speed detecting means for detecting the speed of the car;
A comparison means for comparing the overspeed reference determined by the overspeed reference determination means with the detected speed of the car detected by the car speed detection means;
Stop means for stopping the car based on the comparison of the comparison means;
It is provided with.

In the elevator apparatus of the present invention,
The stopping means is
A hoisting machine brake that operates when the detected speed of the car exceeds a first overspeed reference;
An emergency stop for stopping the car when the detected speed of the car exceeds a second overspeed reference higher than the first overspeed reference;
It is characterized by comprising.

The elevator apparatus of the present invention is
Furthermore, an opponent car relative speed detecting means for detecting a relative speed of each car of the car,
A comparison means for comparing the overspeed reference determined by the overspeed reference determination means with the relative speed detected by the counterpart car relative speed detection means;
Stop means for stopping the car based on the comparison of the comparison means;
It is provided with.

The elevator apparatus of the present invention is
A hoisting machine brake that operates when the detected speed of the car exceeds a first overspeed reference;
An emergency stop for stopping the car when the detected speed of the car exceeds a second overspeed reference higher than the first overspeed reference;
It is characterized by comprising.

  As described above, the elevator apparatus according to the present invention eliminates the need for on-site adjustment and long-term maintenance, and can easily change the overspeed detection level according to the state of the car.

1 is a diagram conceptually showing the configuration of an elevator apparatus according to Embodiment 1. FIG. The figure which shows notionally the connection for the elevators which concern on Embodiment 1, and another apparatus. 1 is a diagram conceptually illustrating an example of an elevator apparatus according to Embodiment 1. FIG. The figure which shows the graph showing the relationship between the running speed of a cage | basket | car, and the 1st and 2nd overspeed. The figure which shows the graph showing another relationship between the running speed of a cage | basket | car, and the 1st and 2nd overspeed. The flowchart which shows the process of obtaining the correction value of car position information. The figure which shows notionally the structure of the elevator apparatus which concerns on Embodiment 2. FIG. The figure which shows notionally the connection between the object for elevators based on Embodiment 2, and another apparatus. The figure which shows notionally an example of the elevator apparatus which concerns on Embodiment 2. FIG. The figure which shows the graph showing the relationship between the running speed of a cage | basket | car, and the 1st and 2nd overspeed. The figure which shows notionally the structure of the elevator apparatus which concerns on Embodiment 3. FIG. The figure which shows notionally the connection between the object for elevators based on Embodiment 3, and another apparatus. The figure which shows notionally an example of the elevator apparatus which concerns on Embodiment 3. FIG. The figure which shows the graph showing the relationship between the running speed of a cage | basket | car, and the 1st and 2nd overspeed. The figure which shows the graph which shows the relationship between the running speed of a cage | basket | car, and the 1st and 2nd overspeed. The figure which shows notionally the structure of the elevator apparatus which concerns on Embodiment 4. FIG. The figure which shows notionally an example of the elevator apparatus which concerns on Embodiment 4. FIG. The perspective view which shows the structure of a double car elevator apparatus. The figure which shows notionally the structure of a double-car elevator apparatus or a multi-car elevator apparatus. The figure which shows notionally the structure of a double-car elevator apparatus or a multi-car elevator apparatus. The schematic block diagram of the conventional elevator apparatus. The schematic block diagram of the other conventional elevator apparatus.

  Hereinafter, a plurality of embodiments of the present invention will be described with reference to the accompanying drawings. Note that, in a plurality of embodiments described below, common configurations and information (commands) are denoted by the same reference numerals.

Embodiment 1:
FIG. 1 is a diagram for conceptually explaining a configuration related to safety control of the elevator apparatus according to the first embodiment. In this figure, a portion surrounded by a square frame indicates a control component, and a portion surrounded by a circle or an ellipse indicates information (command) transmitted from the component. Specifically, 1 is an elevator governor, 11 is an overspeed running means for judging whether or not the speed of the car exceeds a limit speed (overspeed) that is a predetermined reference, Means for determining an overspeed detection level (a value of an overspeed that is a speed limit), 13 is a means for operating a brake of the hoist, 14 is a means for operating an emergency stop (emergency stop device), and 125 is a first overspeed The speed detection level, 126 is the second overspeed detection level, 30 is the car speed detection means for detecting the speed of the car, 35 is the car speed information detected by the car speed detection means 30, and 40 is the car position continuously. Detecting car position detecting means, 45 is car position information obtained by the car position detecting means 40, 50 is a hoisting machine brake, 55 is a hoisting machine brake operation command, 60 is an emergency stop, 65 is an emergency stop operation command , 70 is rising Car position detecting means for intermittently detecting the position of the car on the road; 75, car position information obtained by the car position detecting means 70; 80, position information correcting means for correcting the car position information 45 with the car position information 75; Is the car position information corrected by the position information correcting means 80. As shown in the figure, the elevator governor 1 includes a car speed detecting means 30, a car position detecting means 40, a hoisting machine brake 50, and an emergency stop 60. The car position detecting means 70 is electrically connected to transmit the information described above.

  Next, the operation will be described. The car speed detecting means 30 detects car speed information 35. The elevator speed governor 1 includes car position information 45 (continuous car position information) output from the car position detection means 40 and car position information (intermittent car position information) 75 output from the car position detection means 70. Input to the position information correction means 80. The position information correcting means 80 compares the car position information 45 with the car position information (intermittent car position information) 75, and corrects the car position information 45 based on the car position information 75 when there is a difference between the two. The subsequent car position information 85 is output. The corrected car position information 85 is input to the means 12 for determining the overspeed detection level. The means 12 for determining the overspeed detection level determines the first overspeed detection level 125 and the second overspeed detection level 126 in the entire stroke of the hoistway 4 as shown in FIG. And output. The second overspeed detection level 126 is larger than the first overspeed detection level 125. For example, the first overspeed detection level 125 and the second overspeed detection level 126 are set such that the first overspeed detection level 125 is 120% of the driving speed pattern and the second overspeed detection level 126 is 125% of the driving speed pattern. In addition, different values having a margin for the driving speed pattern are set. A driving speed pattern is created when an operation from one floor (departure floor) to another floor (target floor) is specified by a call button or the like provided in the car or outside the car (floor). This indicates the relationship between the car position (or time) and the car speed, and is given as a trapezoid pattern including a starting acceleration area, a rated speed traveling area, and a target floor deceleration area. However, the pattern of the first overspeed detection level 125 and the second overspeed detection level 126 is not limited to a trapezoidal pattern, and as shown in FIG. You may make it increase linearly from the position beyond the area | region, and as shown in FIG.5 (b), you may increase / decrease in steps in a termination | terminus area | region.

  Next, the first overspeed detection level 125, the second overspeed detection level 126, and the car speed information 35 are input to the means 11 for determining overspeed traveling included in the elevator governor 1. The means 11 for determining overspeed traveling compares the car speed information 35 with the first overspeed detection level 125 and the second overspeed detection level 126. When the car speed information 35 exceeds the first overspeed detection level 125, An operating signal is transmitted to the means 13 for operating the hoisting machine brake. Upon receiving this operation signal, the means 13 for operating the brake of the hoisting machine outputs a brake operation command 55 for the hoisting machine, and operates the brake 50 of the hoisting machine. When the car speed information 35 exceeds the second overspeed detection level 16, an operation signal is transmitted to the means 14 for operating the emergency stop. When this activation signal is received, the means 14 for operating the emergency stop outputs an emergency stop operation command 65 and operates the emergency stop 60.

  FIG. 2 is a configuration diagram of an elevator apparatus that embodies the first embodiment. In this figure, reference numerals attached to circuits that connect the components indicate information transmitted through the circuit. Specifically, in the elevator apparatus, 2 is a car, 3 is a counterweight, 4 is a hoistway, 5 is a machine room, 6 is an electric motor, 7 is a sheave of a hoisting machine, and drives the electric motor 6 in the machine room 5. Based on this, the sheave 7 of the hoisting machine is rotated, and the car 2 and the counterweight 3 connected to both ends of the wire hung on the sheave 7 are moved up and down. Next, 20 is a control panel, 25 is an operation command information including information on an operation speed command value and a target floor (a floor designated by a call button), and 71 is a shielding plate. The elevator governor 1 is electrically connected to the car speed detecting means 30, the car position detecting means 40, the brake 50 of the hoisting machine, the emergency stop 60, and the car position detecting means 70.

  Specifically used as the car position detecting means 40 for detecting the position of the car 2 in the hoistway 4 is a speed detection generator for measuring the rotational speed of the sheave 7 and a calculation process for converting the rotational speed into position information. A combination of devices or an encoder for detecting the rotational speed of the sheave can be considered.

  The car position detection means 70 is installed in the hoistway 4, and by contacting with the shielding plate 71 installed in the car 2, for example, the switch in the car position detection means 70 is kicked up and the car 2 is detected. It can be detected that the installation position of the position 70 has been passed. For example, the car position detecting means 70 is not limited to the shielding plate 71 but may be a switch for operating the car position detecting means 70. Further, instead of the car position detecting means 70 and the means 71 for operating the car position detecting means 70, a landing relay guide plate generally installed near each floor and a landing relay installed in the car May be used to obtain the car position information 75, or an end point switch generally installed near the terminal floor may be used. Furthermore, the car position detecting means 70 may be installed in the car, and the means 71 for operating the car position detecting means 70 may be installed in the hoistway.

  The car speed detecting means 30 is a combination of an encoder that detects the rotational speed of the sheave 7 and an arithmetic processing unit that converts the rotational speed into speed information, even if it is a speed detection generator that measures the rotational speed of the sheave 7. It does not matter. The elevator governor 1 may be installed in the hoistway 4, installed in the machine room 5, or installed in the car 2.

  Next, the operation of the governor in the elevator apparatus will be described. The elevator governor 1 acquires the car speed information 35 from the car speed detecting means 30. In the elevator governor 1, the car position detection unit 40 continuously acquires the car position information 45 obtained from the rotation of the sheave 7, and the car 2 is installed from the car position detection unit 70. The car position information 75 that indicates passing through the position is intermittently acquired. The elevator governor 1 that has acquired the information corrects the continuous car position information 45 based on the intermittent car position information 75 and obtains corrected car position information 85. Next, the elevator governor 1 includes an overspeed detection level (first overspeed detection level 125 and second overspeed detection level 126), which is a reference determined based on the corrected car position information 85, and a car. The car speed corresponding to the speed information 35 is compared to determine whether the car speed exceeds the first overspeed detection level 125 and the second overspeed detection level 126, and the overspeed exceeds the overspeed detection level. If so, the excess amount (overspeed) is detected. When the overspeed is detected, the brake 50 or the emergency stop 60 of the hoisting machine is operated depending on the degree of the overspeed. Therefore, for example, the car position detecting means 70 is installed in front of the space where the car 2 should not enter (specifically, the terminal floor margin space), and the second overspeed detection level of the terminal floor margin space is set to 0 (in advance). m / min), the car 2 enters the terminal floor at a high speed and does not enter the lower end pit or the upper end overhead space of the hoistway.

  As described above, the car position detecting means 40 is composed of a combination of a speed detection generator for measuring the rotational speed of the sheave and an arithmetic processing device for converting the rotational speed into position information, or an encoder for detecting the rotational speed of the sheave. Can detect the position of the car continuously, but does not detect the position of the car directly, so errors due to various factors such as the stretch of the rope and the effect of slippage between the sheave and the rope occur. It is possible. On the other hand, the car position detecting means 70 is always at the same fixed position in the hoistway when the car position detecting means 70 moves together with the hoistway 4 expansion and contraction. Since the position is detected by direct contact with the car without receiving it, there are advantages such as no measurement error. The disadvantage is that continuous car position detection is not possible. Therefore, the present embodiment using the car position detecting means 40 capable of continuously detecting the car position and the car position detecting means 70 capable of detecting the actual car position in the hoistway intermittently. According to the embodiment, the car position information obtained by the car position detecting means 40 can be corrected by the car position detecting means 70.

  FIG. 3 is a diagram illustrating an example of a specific configuration of the elevator governor 1 illustrated in FIGS. 1 and 2. In this figure, reference numeral 15 denotes an I / O which inputs car speed information 35, car position information 45 and car position information 75 to the elevator governor 1 and outputs an operation signal to the brake 50 or the emergency stop 60 of the hoisting machine. The port 16 corrects the car position information 45 from the car position information 45 and the car position information 75 and rewrites the corrected value with the corresponding data stored in the ROM 17, and detects the overspeed to detect the brake 50 of the hoisting machine. And a microprocessor for outputting a signal for operating the emergency stop 60, a ROM 17 for storing an overspeed detection program, a first overspeed detection level and a second overspeed detection level, and 18 for temporarily storing car speed information and car position information. The RAM 19 to be stored is a battery that supplies power to the elevator governor 1 when the external power supply is interrupted, and the I / O port 15 A microprocessor 16, a ROM 17, a RAM 18, a battery 19 are electrically connected so as to achieve the following functions.

  Next, the operation will be described. When the microprocessor 16 acquires the car speed information 35, the car position information 45, and the car position information 75 via the I / O port 15, the microprocessor 2 uses the overspeed detection program stored in the ROM 17 to overload the car 2. It is determined whether or not the vehicle is traveling at a speed. For example, the overspeed detection program detects a difference between the continuous car position information 45 and the intermittent car position information 75, corrects the car position information 45 based on the car position information 75, and corrects the car position information 85 after correction. Get. Next, based on the car position information 45 and the car position information 75, the first overspeed detection level and the second overspeed detection level stored in the ROM are corrected. Subsequently, the first overspeed detection level and the second overspeed detection level corresponding to the car position information 85 are compared with the car speed information 35, and when the car speed information 35 exceeds the first overspeed detection level, the hoisting machine A signal 55 for operating the brake 50 is output. When the car speed information 35 exceeds the second overspeed detection level, a signal 65 for operating the emergency stop 60 is output. These signals 55 and 65 are output through the I / O port 15 to activate the brake 50 or the emergency stop 60 of the hoisting machine.

  An example of a correction method in the position information correction unit 80 will be described with reference to the flowchart of FIG. First, since the car position detecting means 40 can continuously detect the car position, while the car position detecting means 70 cannot continuously detect the car position, the position information correcting means 80 can detect the car position information 45 and the car. It is confirmed whether or not the position information 75 is input. When both are input, the value of the car position information 45 is set to “0”, the car position information 75 is recognized as the actual position of the car, and the car position information 75 is output as the car position information 85. When there is no input of the car position information 75, that is, when only the car position information 45 is input, the car position information 45 represents the moving distance of the car since the previous input of the car position information 75. Therefore, the car position information 85, which is obtained by adding the car position information 45 to the previous car position information 75, is output as the car position information 85. By repeating the above, every time the car passes the installation position of the car position detecting means 70, the error of the car position information 45 is reset.

  According to the first embodiment described above, the car position information 45 continuously obtained from the rotation of the sheave 7 indicates the actual car position obtained from the car position detecting means 70 provided in the hoistway 4. It can be automatically corrected based on the position information 75. Therefore, the adjustment work at the time of installing the elevator governor on the spot becomes unnecessary. In addition, since it is not affected by aging (wire elongation, etc.), long-term maintenance is not necessary. Furthermore, since the overspeed detection level can be changed according to the position of the car, for example, overspeed detection using an overspeed detection level corresponding to an acceleration / deceleration pattern or a rated speed near the terminal floor is possible.

Embodiment 2:
7 and 8 are diagrams showing the configuration of the elevator apparatus according to Embodiment 2 of the invention. In the elevator governor 1 of this elevator apparatus, the control panel 20 transmits the operation command information 25 to the overspeed detection level determination means 12. The overspeed detection level determination means 12 that has acquired the operation command information 25 is based on the first overspeed detection level based on the distance to the destination floor obtained from the car location information 85 and the destination information of the car included in the operation command information 25. 125 and the second overspeed detection level 126 are determined.

  The signal processing in the elevator governor 1 will be described in more detail with reference to FIG. First, the I / O port 15 inputs operation command information 25 including car destination information, car speed information 35, car position information 45, and car position information 75 to the elevator governor 1 and inputs the brake 50 of the hoisting machine. An operation signal is output to the emergency stop 60. The microprocessor 16 corrects the position deviation from the car position information 45 and the car position information 75, rewrites the data in the ROM 17 in accordance with the position deviation correction, detects the overspeed, and outputs a signal for operating the brake and emergency stop of the hoisting machine. Output.

  In the second embodiment described above, the first overspeed detection level 125 and the second overspeed detection level 126 are determined by the car position information 85, as in the first embodiment. However, in the second embodiment, in addition to the car position information 85, the vehicle destination information (target floor) is input from the control panel 20 to the means 12 for determining the overspeed detection level. You can see the distance to the destination floor. Therefore, as shown in FIG. 10, the first overspeed detection level 125 and the second overspeed detection level 126 are output in the process from the departure floor to the destination floor of the car. The destination information of the car may be changed from inside or outside the car while the car is running. On the other hand, whenever the destination information of the car is changed, the new destination information is inputted to the means 12 for determining the overspeed detection level to update the overspeed detection levels 125 and 126. Then, the car position information 45 continuously obtained from the rotation of the sheave 7 is automatically corrected based on the car position information 75 indicating the actual car position obtained from the car position detecting means 70 provided in the hoistway 4. it can. Further, the same effect as that obtained in the first embodiment can be obtained.

Embodiment 3:
11 and 12 are diagrams conceptually showing the configuration of the elevator apparatus according to Embodiment 3 of the present invention. In the elevator governor 1 of this elevator apparatus, the control panel 20 transmits the operation command information 25 to the overspeed detection level determination means 12. The overspeed detection level determination means 12 that has acquired the operation command information 25, based on the car position information 85 and the operation speed command value included in the operation command information 25, the first overspeed detection level 125 and the second overspeed detection level. 126 is determined.

  The signal processing in the elevator governor 1 will be described in more detail with reference to FIG. First, the I / O port 15 inputs the operation command information 25 including the operation command value, the car speed information 35, the car position information 45, and the car position information 75 to the elevator governor 1 and inputs the brake 50 of the hoisting machine or the emergency An actuation signal is output to the stop 60. The microprocessor 16 corrects the position deviation from the car position information 45 and the car position information 75, rewrites the data in the ROM 17 in accordance with the position deviation correction, detects the overspeed, and outputs a signal for operating the brake and emergency stop of the hoisting machine. Output.

  Therefore, according to the third embodiment, in addition to the effects of the first embodiment described above, for example, as shown in FIG. 14, when the load on the hoisting machine is small even if the same distance is moved, Overspeed detection is possible even in an elevator that employs an operation method that travels at a high speed and travels at a low speed when the load is large. Further, the pattern of the first overspeed detection level 125 and the second overspeed detection level 126 is not limited to the trapezoid pattern, and when the operation speed command value is lower than a predetermined value as shown in FIG. It may be constant and may change linearly after exceeding this predetermined value, or may change stepwise as shown in FIG.

Embodiment 4:
FIG. 16 is a diagram conceptually showing the configuration of the elevator apparatus according to Embodiment 2 of the present invention. In the elevator governor 1 of this elevator apparatus, the control panel 20 transmits the operation command information 25 to the overspeed detection level determination means 12. The overspeed detection level determination means 12 that has acquired the operation command information 25 uses the first overspeed detection level based on both the car location information 85 and the car destination information obtained from the operation command information 25 and the low speed command value. 125 and the second overspeed detection level 126 are determined.

  The signal processing in the elevator governor 1 will be described in more detail with reference to FIG. First, the I / O port 15 inputs the destination information (distance to the destination floor), the operation command value 25, the car speed information 35, the car position information 45, and the car position information 75 to the elevator governor 1 and then the hoisting machine. The operation signal is output to the brake 50 or the emergency stop 60. The microprocessor 16 corrects the position deviation from the car position information 45 and the car position information 75, rewrites the data in the ROM 17 in accordance with the position deviation correction, detects the overspeed, and outputs a signal for operating the brake and emergency stop of the hoisting machine. Output.

  According to the fourth embodiment configured as described above, an elevator that performs overspeed detection with higher safety by determining the overspeed detection level based on the car position information and the operation speed command value at that time. A speed governor is obtained. Further, the first overspeed detection level 125 and the second overspeed detection level 126 can be determined from the destination information and the car position information, and can also be determined from the operation speed command. Further, a safer value of both, that is, a lower speed may be selected to determine the final first overspeed detection level 125 and the second overspeed detection level 126. From the above, it is possible to perform overspeed detection with higher safety.

Embodiment 5:
In the fifth embodiment, the present invention is applied to a double-car elevator device or a multi-car elevator device. As shown in FIGS. 18 and 19, the double car elevator device is an elevator in which two cars 2 travel in the same hoistway 4, and the multi-car elevator apparatus is three or more cars. 2 is an elevator apparatus that travels in the same hoistway 4. Consider using an elevator governor and emergency stop as a means to prevent cars from colliding with each other. Unlike Embodiments 1 to 4, in a double car / multi car, relative information for each car is required. Therefore, in the double car elevator device and the multicar elevator device, the means 12 for determining the overspeed detection level receives the car position information 85, and sets the first overspeed detection level 125 and the second overspeed detection level 126. decide. Further, the opponent car relative position information 95 detected by the opponent car position detecting means 90 is inputted to the means 110 for determining the overspeed detection level. The means 110 for determining the overspeed detection level determines and outputs a first overspeed detection level 1105 and a second overspeed detection level 1106 based on the car position information 95. Further, the relative speed 105 of the opponent car is detected by means 100 for detecting the relative speed (approaching speed) of the opponent car. Next, the first overspeed detection level 1105, the second overspeed detection level 1106, and the relative speed 105 of each opponent car are input to the means 120 for determining overspeed travel, and the magnitudes thereof are compared. When the relative speed 105 of the opponent car is larger than the first overspeed detection level 1105, the means 120 for determining the overspeed traveling notifies the means 13 for operating the brake of the hoisting machine. Then, the means 13 for operating the brake of the hoisting machine outputs a brake operation command 55 for the hoisting machine, and operates the brake 50 of the hoisting machine. Further, when the relative speed 105 of the opponent car is larger than the second overspeed detection level 1106, this is transmitted to the means 14 for operating the emergency stop. Then, the means 14 for operating the emergency stop outputs an emergency stop operation command 65 to operate the emergency stop 60.

  The counterpart car relative position detecting means 90 and the means 100 for detecting the relative speed (approaching speed) of each opponent car include non-contact position detection such as a millimeter wave radar position sensor, an ultrasonic position sensor, and a semiconductor radar position sensor. And a means for calculating the distance to the opponent car from the car position information detected by each car position detecting means.

Embodiment 6:
In the elevator governor 1 for a double car elevator device or multicar elevator device shown in FIG. 20, the means 12 for determining the overspeed detection level includes car position information 85, relative position information 95 with respect to the opponent car, and with respect to the opponent car. Speed information 105 and operation command information 25 are input. When these pieces of information are input, the means 12 for determining the overspeed detection level includes the car position information 85, the relative position information 95 for the opponent car, the speed information 105 for the opponent car, the destination floor included in the operation command information 25, The first overspeed detection level 125 and the second overspeed detection level 126 are determined from the operation speed command value, the destination floor of the opponent car, and the operation speed command value of the opponent car. Next, the first overspeed detection level 125, the second overspeed detection level 126, and the car speed information 35 are input to the means 11 for determining overspeed traveling, and their sizes are compared. When the car speed information 35 is greater than the first overspeed detection level 125, the means 11 for determining overspeed traveling notifies the means 13 for operating the brake of the hoisting machine. Then, the means 13 for operating the brake of the hoisting machine outputs a brake operation command 55 for the hoisting machine, and operates the brake 50 of the hoisting machine. Further, when the car speed information 35 is larger than the second overspeed detection level 126, this is transmitted to the means 14 for operating the emergency stop. Then, the means 14 for operating the emergency stop outputs an emergency stop operation command 65 to operate the emergency stop 60. In this embodiment, the vehicle position relative to the hoistway and the relative position with respect to the opponent car, the relative speed with respect to the opponent car, the operation speed command value, the target floor, the operation speed command value of the opponent car, and the destination floor of the opponent car are exceeded. Although the speed detection level is determined, not all the information for determining the overspeed detection level is necessarily required.

  In the above embodiment, the timing for correcting the error in the car position information 45 is when the car passes the installation position of the car position detecting means 70. As the installation position of the car position detection means 70, a landing relay installed near each floor can be used as the car position detection means 70. In this case, it is possible to automatically adjust to the hoistway during traveling. Further, it may be near the floor where the number of stops such as the terminal floor is high, and in this case, it can be automatically adjusted to the hoistway every time it passes or stops at the floor where the car position detecting means 70 is installed. Further, any position in the hoistway may be used. In this case, when the car does not pass the installation position of the car position detection means 70 within a certain time, the car is always driven to the installation position of the car position detection means 70. It is possible to make adjustments according to the hoistway by means such as.

  1 elevator governor, 2 car, 3 counterweight, 4 hoistway, 5 machine room, 6 electric motor, 7 sheave, 11 means for determining overspeed running, 12 means for determining overspeed detection level, 13 hoisting Means for operating the machine brake, 14 means for operating the emergency stop, 15 I / O port, 16 microprocessor, 17 ROM, 18 RAM, 19 battery, 20 control panel, 25 operation speed command value and destination floor information Including operation command information, 30 car speed detecting means, 35 car speed information detected by the car speed detecting means 30, 40 car position detecting means, 45 car position information obtained by the car position detecting means 40, 50 hoisting machine brake , 55 Brake operation command for hoisting machine, 60 Emergency stop, 65 Emergency stop operation command, 70 Car position detection means for descending road, 71 Shield plate, 75 Car position information obtained by car position detection means 70, 80 Position information correction means, 85 Car position information corrected by position information correction means 80, 125 First overspeed Detection level, 126 Second overspeed detection level.

Claims (6)

An elevator apparatus in which two or more cars travel in the same hoistway,
Car and
Opponent car relative position detecting means for detecting the relative position of the nearest opponent car traveling in the same hoistway of the car;
Overspeed reference determining means for determining an overspeed reference of the car based on the relative position of the car and the car detected by the opponent car relative position detecting means;
An elevator apparatus comprising: A car position detecting means for detecting the position of the car;
Overspeed reference determining means for determining an overspeed reference based on the car position information detected by the car position detecting means;
The elevator apparatus according to claim 1, further comprising: A car speed detecting means for detecting the speed of the car;
A comparison means for comparing the overspeed reference determined by the overspeed reference determination means with the detected speed of the car detected by the car speed detection means;
Stop means for stopping the car based on the comparison of the comparison means;
The elevator apparatus according to claim 1 or 2, further comprising: The stopping means is
A hoisting machine brake that operates when the detected speed of the car exceeds a first overspeed reference;
An emergency stop for stopping the car when the detected speed of the car exceeds a second overspeed reference higher than the first overspeed reference;
The elevator apparatus according to claim 3, comprising: Furthermore, an opponent car relative speed detecting means for detecting a relative speed of each car of the car,
A comparison means for comparing the overspeed reference determined by the overspeed reference determination means with the relative speed detected by the counterpart car relative speed detection means;
Stop means for stopping the car based on the comparison of the comparison means;
The elevator apparatus according to claim 1 or 2, further comprising: A hoisting machine brake that operates when the detected speed of the car exceeds a first overspeed reference;
An emergency stop for stopping the car when the detected speed of the car exceeds a second overspeed reference higher than the first overspeed reference;
The elevator apparatus according to claim 5, comprising:

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