Unlock instant, AI-driven research and patent intelligence for your innovation.
Safety control device and safety control method for multi-car elevator
What is Al technical title?
Al technical title is built by PatSnap Al team. It summarizes the technical point description of the patent document.
A safety control, multi-car technology, applied in the direction of transportation and packaging, elevators, etc., can solve the problem of increased frequency and achieve reliable moving effect
Active Publication Date: 2020-06-19
MITSUBISHI ELECTRIC CORP
View PDF8 Cites 0 Cited by
Summary
Abstract
Description
Claims
Application Information
AI Technical Summary
This helps you quickly interpret patents by identifying the three key elements:
Problems solved by technology
Method used
Benefits of technology
Problems solved by technology
Moreover, various equipments are installed in the hoistway, and the frequency of maintenance personnel entering the hoistway to perform maintenance work increases during the maintenance of the elevator equipment.
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more
Image
Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
Click on the blue label to locate the original text in one second.
Reading with bidirectional positioning of images and text.
Smart Image
Examples
Experimental program
Comparison scheme
Effect test
Embodiment approach 1
[0033] figure 1 It is a figure which shows the schematic structure of the multi-car elevator provided with the safety control apparatus of the multi-car elevator of this invention. figure 1 (a) shows the overall structure of a multi-car elevator, and (b) shows the structure of one car and one traction machine. exist figure 1 In (a), the hoistway 1 has a plurality of cars 2a, 2b, and in the machine room 3a in the upper part of the hoistway, the hoisting machine 5 is installed for each of the cars 2a, 2b. figure 1 (a) is a configuration diagram of a so-called double-car elevator in which two cars 2a and 2b move, but three or more cars may be used.
[0034] like figure 1 As shown in (b), one hoisting machine 5 includes a drive sheave 5a, a hoisting machine motor 5b that rotates the drive sheave 5a, and a hoisting machine brake 5c that brakes the rotation of the drive sheave 5a. The suspension unit 6 is wound around the drive sheave 5a. As the suspension unit 6, a plurality o...
Embodiment approach 2
[0108] Figure 10 It is a block diagram which shows an example of a structure of the safety control apparatus of the multi-car elevator in Embodiment 2 of this invention. In Embodiment 2, the hall door switch 9b, the encoders 8ca, 8cb corresponding to the respective cars 2a, 2b, the leveling sensors 2ca, 2cb, the switches and sensors composed of the manual operation operators MOa, MOb, It is connected to the network nodes NN1 to NN4, and is connected to the safety control device 4BB via the serial network NW. In the safety control device 4BB, the respective input units 41a, 41b, and 41c are connected to the serial network NW via the network interface NNI. The other structures are the same as those of the first embodiment.
[0109] The signals of the switches and sensors (9b, 8ca, 8cb, 2ca, 2cb, MOa, MOb) are converted into message data in the network nodes NN1 to NN4, and are periodically sent to the safety control device 4BB. At this time, an identifier, a serial number, a...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
PUM
Login to View More
Abstract
In the safety control device of a multi-car elevator in which a plurality of cars travels in one hoistway, the car position speed measuring device for measuring the respective positions and velocities of the plurality of cars and the multiple car position and speed measuring devices that independently detect the hoistway are used. The signal of multiple landing door switches of the opening of the landing door is detected as When entering the pit during maintenance, if the floor where the door is opened is a floor other than the lowest floor and there is a car in the accessible area of the car during maintenance on the floor where the door is opened, it will be detected as entering the car during maintenance. If there is no car on the floor where the door is opened, it is detected as traveling with the door open, and the automatic operation of the car is invalidated or the car is stopped.
Description
technical field [0001] The invention relates to the control of a multi-car elevator in which multiple cars travel in one hoistway, in particular to a safety control device and a safety control method of a multi-car elevator for protecting the safety of maintenance personnel who perform maintenance operations in the hoistway and the like . Background technique [0002] In recent elevators, there is a multi-car elevator in which a plurality of cars travel in the same hoistway. In addition, various equipments are installed in the hoistway, and maintenance personnel frequently enter the hoistway to perform maintenance work during maintenance of the elevator equipment. [0003] For example, when the hoisting machine and / or the control device are installed in the upper part of the hoistway, maintenance personnel climb on the car to perform maintenance work on the hoisting machine and / or the control device. In addition, when maintaining the hall door device and / or various hoistwa...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More
Application Information
Patent Timeline
Application Date:The date an application was filed.
Publication Date:The date a patent or application was officially published.
First Publication Date:The earliest publication date of a patent with the same application number.
Issue Date:Publication date of the patent grant document.
PCT Entry Date:The Entry date of PCT National Phase.
Estimated Expiry Date:The statutory expiry date of a patent right according to the Patent Law, and it is the longest term of protection that the patent right can achieve without the termination of the patent right due to other reasons(Term extension factor has been taken into account ).
Invalid Date:Actual expiry date is based on effective date or publication date of legal transaction data of invalid patent.
Login to View More 
Login to View More