JPH04354772A - Control device for self-propelling type elevator - Google Patents

Abstract

PURPOSE:To prevent cages from making collision with each other in duplicated manner, by cutting off the supply of power from a block zone control section, to a corresponding zone coil when a plurality of cages have entered a block zone and by causing a forced brake control section to forcibly braking the cages. CONSTITUTION:When a #2 cage travels in a zone belonging to a zone coil 19b, a power supply instruction is issued from a power supply instruction selecting and controlling section 24 in a power control device 20 so that power is fed to a b-zone coil. At the same time when, the instruction is transmitted to a power control system 20 for another cage, the power instruction selecting and controlling section 24 controls the power supply to zone coils (a, c) adjacent thereto, and accordingly, block zone control is carried out in order to prevent another cage from entering into the zone (b). If the entrance of another cage into the zone (b) takes place erroneously photoelectric sensors provided at opposite ends of the section coil 19 detect the entrance so that a forced deceleration instructing signal is delivered to a forced deceleration control section 26 which carries out emergency stop. Accordingly, the cages may be prevented from making collision with each other in duplicated manner, thereby it is possible to enhance the safety.

Description

[Detailed description of the invention]

[Object of the invention]

0002

[Industrial Application Field] The present invention is a self-propelled elevator that uses a linear motor as a drive device and is capable of running vertically and horizontally. The present invention relates to a control device for an elevator.

0003

[Prior Art] Most of the elevators that have been widely used in the past include hydraulic elevators that use hydraulic plungers to raise and lower cars, and drum type elevators that are used for relatively small capacity areas. This is a method in which the cage and counterweight are connected in a rope-like manner, and one hoistway has one
Two passenger baskets are arranged.

[0004] As shown in FIG. 3, this crane-type elevator has a car 1 and a counterweight 2 disposed in the hoistway with guide rails 3 and 4 provided therebetween. The construction is such that a rope 8 connects the two in the form of a hook via a sheave 6 and a deflection sheave 7 of a hoist 5 installed in the machine room of the section. In recent years, three-phase induction motors have been used as drive motors for the hoist 5.
Inverter devices equipped with a microprocessor as a control device are widely used.

[0005] In such a control device for a hanging type elevator, in order to move the car 1, the driving force corresponding to the unbalanced load between the car 1 and the counterweight 2 is required, excluding the running loss due to the machine. It has the advantage that the capacity of the drive device and control device is small, and since it is a method that has been widely used for a long time, the technology has been established in terms of performance and safety, and it is reliable. There are certain advantages.

However, in recent years, various ideas have been proposed for new inter-floor transportation systems to meet the demands of ultra-high-rise buildings, but the proposed new transportation systems One of these is a self-propelled elevator in which the car itself runs without the use of ropes, and this is the concept of a vertically and horizontally movable elevator that is configured to be able to travel not only vertically but also horizontally. .

The concept of this self-propelled elevator system is as follows:
This breaks down the conventional concept of one car per hoistway, and is attracting attention as an innovative technology that allows multiple cars to run in one hoistway.

FIG. 4 shows the system configuration of such a proposed self-propelled elevator capable of running vertically and horizontally, in which a linear motor secondary conductor 10 is installed in a plurality of cars 9, and a hoistway Linear motor primary coil 1 installed in
The driving thrust is obtained by the magnetic force between the two. As a safety device, there is provided a brake 12 and a shock absorber 13 for alleviating the impact caused by collision between the cars 9. Furthermore, a hanging machine 14 and a movable plate 15 for horizontal traveling are installed on the top floor, and on the bottom floor,
Similarly, a hydraulic jack 16 is installed to allow a plurality of cars 9 to run on one hoistway. (In addition, 17 in FIG. 4 is a photoelectric sensor light receiving part provided on the running road side, and 18 is a photoelectric sensor light projecting part provided in each car 9. These photoelectric sensors 17 and 18 are the same as those of this invention. (This is provided as an example.) In this self-propelled elevator control device, as described above, the shock absorber 13 is provided as one of the safety devices in order to alleviate the impact caused by collision between the cars. However, if the car is running at the rated speed, the shock absorber 13 is the final safety device, and in order to prevent cars from colliding with each other, the cars must be stopped before the shock absorber takes its protective action. Must be.

[0009] Furthermore, if the primary coil of the running path for driving the linear motor is made longer, the loss will be large in the current linear motor, so it is divided into certain sections and short section coils are installed for each section. This is a commonly implemented configuration due to the economical effect of the entire system.

0010

[Problem to be Solved by the Invention] In a self-propelled elevator system with such a configuration, it is possible to adopt the technology for closed sections that is used in railway systems. A closed section is provided, and a closed section control unit controls the vehicle to prohibit other cars from entering the closed section, but greater reliability is required in terms of sufficiently preventing collisions.

[0011] This invention was made to solve such technical problems, and it is possible to further ensure safety by reliably preventing other cars from entering the blocked section. The purpose of the present invention is to provide a control device for a self-propelled elevator that can perform the following tasks.

[Configuration of the invention]

[0013]

[Means for Solving the Problems] The present invention provides a primary coil of a multiphase AC linear motor provided along a running path formed in a building, and a primary coil installed for each of a plurality of cars arranged on the running path. In a control device for a self-propelled elevator, in which the car is configured to self-propel along a traveling path by generating thrust by magnetic force between the secondary conductor of the linear motor and the secondary conductor of the linear motor, A power supply controller installed for the number of cars, a primary coil of the linear motor divided into a plurality of section coils, and a divided section coil selected and connected to the power supply control section to supply driving power. a section selection switch, and a blockage for preventing other cars from entering within a certain distance from the car existing in the section coil when a car is present in one of the section coils. A closed section control section that sets the section, a car position detection section that detects the position of each car, and a position detection signal from the car position detection section that determines whether another car is in the closed section of the one car. and a forced braking control unit that applies forced braking to the other car when it recognizes that the other car is approaching.

[0014]

[Operation] In the self-propelled elevator control device of the present invention,
The linear motor primary coil is divided into sections, and the driving power for each section coil is supplied from the power supply control unit using the section selection switch. Set up a certain blockage section,
Entry of other cars into the blocked section is prevented by stopping power supply to the corresponding section coil. Further, when another car enters the upper and lower or left and right ends of each closed section, the forced braking control section detects the entry and forcibly applies braking to the other car.

[0015] In this way, the entry of other cars into the blocked section is prevented by the blocked section control section stopping power supply to the corresponding section coil, and also by forced braking performed by the forced braking control section. In self-propelled elevators where multiple cars run simultaneously on one travel path, by providing measures to prevent entry into blocked sections,
To ensure safety by surely preventing collisions between cars.

[0016]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of the present invention will be explained in detail below with reference to the drawings.

FIG. 1 shows a circuit configuration of an embodiment of the present invention, and in order to simplify the explanation, this embodiment has a plurality of cars No. 1 to No. 4 in a plurality of hoistways A and B. shows the system in which it runs.

As shown in FIG. 4, 17 is a photoelectric sensor light receiving section installed at both ends of each section of the hoistway. By receiving the optical signal from 18, the traveling position of each car 9 can be detected.

In FIG. 1, reference numeral 19 denotes a hoistway primary section coil of a driving linear motor, which divides a long hoistway into sections a, b, and c of a plurality of appropriate lengths, for example, sections a, b, and c each having a length about the distance between floors.
It is divided into ,... Reference numeral 20 denotes a power supply control device for supplying driving power, which is installed in correspondence with the number of cars 9. Reference numeral 21 denotes a section selection switch for supplying driving power from each power supply control device 20 to each section coil 19, and as shown in the figure, the output end of each power supply control device 20 is all section coil 1
Therefore, each section coil 19 is connected to section selection switchers 21 corresponding to the number of cars 9.

In other words, the power supply control device 20 of the first unit
Select the section selection switch 21 of any section a, b, c, ... in which the car of car number exists, supply driving power to the section coil 19, and switch the section selection according to the direction of travel of the car. The containers 21 are selected one after another. For example, Unit 1 is A
When present in the hoistway section, power supply control device 2 of Unit 1
0 selects the section selection switch 21 of 1Aa, and when the car 9 advances to section b of hoistway A, selects the section selection switch 21 of 1Ab. By switching, the car is propelled.

Further, 22 is a signal path such as an optical transmission cable for transmitting and receiving signals between the four power supply control devices 20 in order to monitor the power supply status between the four power supply control devices 20. .

Therefore, for example, when machine No. 1 is present in section b of hoistway A, the section selection switch 21 of section 1Ab is selected as described above to supply driving power to coil b of section coil 19. , this power supply command is transmitted to the power supply control device 20 of the other machine via the signal path 22. Then, the power supply control device 20 of the other machine that received this signal recognizes that the first machine is stopped or running in section b, and the own machine also operates in section b and sections a and c before and after it. In order to prevent this, sections a to c are closed sections, and the section selection switch 2 is set so as not to supply power to the coils 19 in these sections.
1, and each car 9 is always moved up and down at a certain interval distance. In other words,
The distance between these three section coils is defined as a closed section, and the closed section is controlled.

FIG. 2 shows that the closed section operation control system and the photoelectric sensors 17 provided at both ends of each section coil forcefully decelerate the car based on the power supply status of the section coil and the detection signal of the photoelectric sensor 17 to stop the car from displaying. The configuration of the control device is shown.

In FIG. 2, each power supply control device 20 includes a car position detection section 23 for detecting the car position of the own car, a power supply command selection control section 24, and a car position detection section 24 for detecting the car position of the own car, a power supply command selection control section 24, and a section between the running section of the own car and the sections before and after it. A section selection switching section 25 outputs a section selection switching command signal to start and stop power supply to the section selection switching device 21 of the coil 19, and a section selection switching section 25 outputs a section selection switching command signal to start and stop power supply, and a section selection switching section 25 that outputs a section selection switching command signal to start and stop power supply, and a section selection switching section 25 that outputs a section selection switching command signal to start and stop power supply. It also includes a forced deceleration control section 26 for applying the deceleration to the own car.

The car position detection unit 24 detects the position of the car 9 of its own machine by counting pulse signals from a pulse generator 27 connected to a rotating roller that contacts the guide rail of the hoistway. It is something to do. In addition, the power supply command selection control unit 24 receives the output signal from the car position detection unit 23, each call registration signal (not shown), and the power supply status of other cars via a signal path 22 such as an optical transmission cable, This is a command to the section selection switching unit 25. Further, the section selection switching section 25 outputs the power feeding command from the power feeding command selection control section 24 to the section selection switch 21 corresponding to the corresponding section coil 19, and supplies power to the selected section coil 19. It is.

When there is no power supply command from the power supply command selection control unit 24, the forced deceleration command control unit 26 causes the photoelectric sensor light receiving units 17 installed at both ends of the section coil 19 to When the optical signal from the brake 18 is received, the car 9 of the own car is forcibly stopped in response to a signal from the power supply command selection control section 24, and this forced braking is performed by the brake 12 in the system shown in FIG. This is done by operating the .

Next, the operation of the self-propelled elevator control device having the above configuration will be explained.

Normally, the car position detection section 23 processes pulse signals from the pulse generator 27 to constantly monitor the position of the car 9 of its own car, and based on this detected position, the power supply command selection control section 24 Which section coil 19
The output conditions are transmitted to the section selection switching unit 25, and the section coil 19 at the position where the car is present and the section coil 19 at the position in front of the car in the traveling direction are supplied with power one by one. Outputs power supply command.

Furthermore, this power supply state is transmitted to the power supply command selection control section 24 in the power supply control device 20 of the other machine via the transmission line 22.
Transmit to.

Now, for example, in FIG. 1, if the car of No. 2 car is stopped or running in the region of section coil b, the power supply command selection control section 24 of the power supply control device 20 of this car No. 2 issues a power supply command. is output, and the section b coil is supplied with power. At the same time, when this power supply command condition is transmitted to the power supply control device 20 of the other machines No. 1, No. 3, and No. 4 through the transmission line 22, the section coil b is transmitted to these other machines. The power supply command selection control unit 24 performs power supply control so as not to supply power to the section coils a and c adjacent thereto. In other words, even if the car of any car from No. 1 to No. 4 exists in area coil b area, the closed area control is performed so that other cars cannot enter the area of area coil 19 from a to c. It will be done.

However, due to some trouble, power may be supplied for the running of the own car to a blocked section of another car that should not be supplied with power, and the car 9 of the own car may enter the blocked section. If so, entry into the closed section is detected by the photoelectric sensor light receiving section 17 provided at both ends of each section coil 19 and the photoelectric sensor light emitting section 18 provided at the car 9, and this signal is sent to the power supply command selection control section 24. From there, a forced deceleration command signal is given to the forced deceleration control unit 26, and the forced deceleration control unit 26 receives this signal and applies an emergency stop to the car 9 of its own car.

[0032] In this manner, in a control device for running a plurality of cars in the same hoistway in a self-propelled elevator using a linear motor as a drive device, a closed section is created for each car in a self-propelled elevator. In addition, if a car from another car were to enter the blocked section for some reason, the position detection unit would detect the car from the own car. When it is detected that a car belonging to another car has entered a blocked section, it is possible to prevent the car from entering the blocked section by applying forced braking.

[0033] In the above embodiment, the distance of the section coil is set as the closed section, but this is not particularly limited and may be a distance of two or more section coils. However, by using a unit of section coil as in the above embodiment, the unit of power supply by the section selection switch is a unit of section, which has the advantage of making it easier to control the closed section.

Further, in the above embodiment, only the hoistways A and B have been described, but this is not particularly limited, and the closed section control can also be performed on a lateral travel path. In that case, in order to perform forced braking control, photoelectric sensor light emitting sections are provided on the left and right sides of the car, and photoelectric sensor light receiving sections are installed at both left and right end positions of the traveling path section.

[0035]

As described above, according to the present invention, in a self-propelled elevator in which a plurality of cars are simultaneously run on a traveling path, blockage section control is performed, and the blockage of the car of the car due to some cause is prevented. If a car from another car enters the section, the system detects that the car from the other car is entering the blocked section and applies forced braking, making the blocked section control even more reliable. Now, even when multiple cars are running on the same hoistway at the same time, collisions with other cars can be reliably avoided, further improving operational safety. .

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention.

FIG. 2 is a block diagram showing the detailed internal configuration of the power supply control device of the above embodiment.

FIG. 3 is an explanatory diagram of a mechanism of a conventional crane elevator.

FIG. 4 is an explanatory diagram of a mechanism of a proposed general self-propelled elevator.

[Explanation of symbols]

9...cart 10...Linear motor secondary conductor 11...Linear motor primary conductor 17...Photoelectric sensor light receiving section 18...Photoelectric sensor light emitting part 19…Section coil 20...Power control device 21...Section selection switch 22...Transmission line 23...Car position detection unit 24...Power supply command selection control section 25…Section selection switching section 26...Forced deceleration control section 27...Pulse generator

Claims (1)

[Claims] Claim 1: A primary coil of a multiphase AC linear motor provided along a running path formed in a building, and a secondary conductor of a linear motor installed for each of a plurality of cars arranged on the running path. In a control device for a self-propelled elevator in which thrust is generated by magnetic force between the elevator car and the elevator car so that the elevator car travels on a traveling path, the controller is installed for the number of elevator cars to drive the elevator car. a power supply control section; a section selection switch for dividing the primary coil of the linear motor into a plurality of section coils, selecting the divided section coil and connecting it to the power supply control section to supply driving power; When a car exists in one of the section coils, a blockade section control unit sets a blockage section that prevents other cars from entering within a certain distance from the car existing in the section coil. and a car position detection unit that detects the position of each car, and a position detection signal from the car position detection unit that recognizes that another car has entered the closed section of the one car. A control device for a self-propelled elevator, comprising: a forced braking control section that sometimes applies forced braking to the other car.