CN112938708A - Elevator safety control system, safety control method and safety control device - Google Patents
Elevator safety control system, safety control method and safety control device Download PDFInfo
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- CN112938708A CN112938708A CN202110163470.XA CN202110163470A CN112938708A CN 112938708 A CN112938708 A CN 112938708A CN 202110163470 A CN202110163470 A CN 202110163470A CN 112938708 A CN112938708 A CN 112938708A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
- B66B11/02—Cages, i.e. cars
- B66B11/0226—Constructional features, e.g. walls assembly, decorative panels, comfort equipment, thermal or sound insulation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/02—Control systems without regulation, i.e. without retroactive action
- B66B1/06—Control systems without regulation, i.e. without retroactive action electric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3415—Control system configuration and the data transmission or communication within the control system
- B66B1/3423—Control system configuration, i.e. lay-out
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3492—Position or motion detectors or driving means for the detector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0031—Devices monitoring the operating condition of the elevator system for safety reasons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0037—Performance analysers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B2201/00—Aspects of control systems of elevators
- B66B2201/40—Details of the change of control mode
- B66B2201/403—Details of the change of control mode by real-time traffic data
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Computer Networks & Wireless Communication (AREA)
- Civil Engineering (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses an elevator safety control system, a safety control method and a safety control device, wherein the elevator comprises an elevator car, the elevator car comprises a car wall, the car wall is of a telescopic structure, and the system comprises: the position detection device is arranged on the elevator car and used for acquiring the position information of the elevator car in the shaft; the control device is electrically connected with the position detection device and used for acquiring the position information and generating a corresponding car control command; and the telescopic device is arranged on the car wall, is connected with the control device and is used for controlling the car wall to execute corresponding telescopic action based on the car control command. The car wall of the elevator car is designed into a telescopic elevator car wall, the elevator car wall is controlled to actively execute telescopic action according to the actual running position of the elevator car, extra hoistway space is not required to be arranged for buffering, and the hoistway construction cost and the elevator cost are reduced; on the other hand can effectively protect elevator car maintainer's personal safety, improves and takes advantage of the terraced security.
Description
Technical Field
The invention relates to the technical field of elevator control, in particular to an elevator safety control system, an elevator safety control method and an elevator safety control device.
Background
Elevators are the only indoor vehicles commonly used in buildings today.
The elevator runs up and down in the hoistway under the action of a traction machine to reach different landings of the current building. In the practical application process, the elevator can have the situation that the running height is higher than the highest landing zone due to different fault conditions, namely, the abnormal situation of top rushing occurs, and the abnormal situation can cause great trouble to passengers and even bring threat to the personal safety of the passengers.
In the prior art, in order to avoid the abnormal situation, a limit switch is arranged in the hoistway and a corresponding safe distance for impacting the top is arranged, so that the abnormal situation is avoided and the damage is avoided.
However, in the practical application process, the limit switch and the safety distance inevitably occupy the extra space of the hoistway, so that the hoistway is required to be provided with extra top floor height, and the construction cost of the building is increased under the condition that the space resources of the current city are precious and scarce.
On the other hand, when the elevator has an unexpected fault, for example, the limit switch fails, the steel wire rope breaks, and the counterweight car is unbalanced, so that the car rushes to the top, and other accidents occur, no safe solution exists at present, so that the safety threat is brought to the personal safety of the maintainers on the car top, and the risk of equipment damage on the car top of the elevator is avoided.
Disclosure of Invention
In order to solve the technical problems in the prior art, embodiments of the present invention provide an elevator safety control system, a safety control method, and a safety control device, in which an elevator car with a retractable top is used to control the top of the elevator car according to the actual operation condition of the elevator during operation, so that the personal safety of the maintainers can be effectively protected when an accident occurs, and the safety of the elevator can be improved.
In order to achieve the above object, an embodiment of the present invention provides an elevator safety control system, where the elevator includes an elevator car, the elevator car includes a car wall, the car wall is of a telescopic structure, and the elevator safety control system includes: the position detection device is arranged on the elevator car and used for acquiring the position information of the elevator car in a hoistway; the control device is electrically connected with the position detection device and used for acquiring the position information and generating a corresponding car control command; and the telescopic device is configured on the car wall, is connected with the control device and is used for controlling the car wall to execute corresponding telescopic action based on the car control command.
Preferably, the car walls comprise an upper car wall and a lower car wall, the telescopic device is connected with the upper car wall and the lower car wall, the telescopic device comprises a telescopic driving assembly and a guiding assembly, and the upper car wall moves up and down along the sliding rails under the driving action of the telescopic driving assembly.
On the other hand, the embodiment of the invention also provides an elevator safety control method, which comprises the following steps: acquiring position information of an elevator car in real time; acquiring a top-impact distance of the elevator car based on the position information; judging whether the top punching distance meets the preset distance requirement or not; and generating a corresponding car control command under the condition that the top-impacting distance does not meet the preset distance requirement.
Preferably, the judging whether the top-punching distance meets a preset distance requirement includes: acquiring the counterweight position of the elevator counterweight based on the position information; obtaining a counterweight travel distance between the elevator counterweight and a counterweight buffer based on the counterweight position; acquiring a preset safety protection distance; judging whether the top impacting distance is smaller than or equal to the sum of the counterweight travel distance and the preset safety protection distance; and under the condition that the jacking distance is smaller than or equal to the sum of the counterweight travel distance and the preset safety protection distance, determining that the jacking distance does not meet the preset distance requirement.
Preferably, the generating a corresponding car control command when the top-impact distance does not meet the preset distance requirement includes: under the condition that the top punching distance does not meet the preset distance requirement, acquiring the running state of the elevator; generating a first car expansion control command corresponding to the top rushing distance under the condition that the elevator running state is a normal running state; and generating a stopping control command under the condition that the elevator running state is an abnormal running state, and generating a second car expansion control command based on the top-rushing distance.
Preferably, the generating a second car expansion and contraction control command based on the top-impact distance comprises: judging whether the top punching distance is larger than or equal to a first distance value or not; under the condition that the top-impact distance is greater than or equal to the first distance value, generating a first telescopic control instruction based on the first distance value; and under the condition that the top impact distance is smaller than the first distance value, generating a second telescopic control command based on the preset distance requirement, wherein a first telescopic height corresponding to the first telescopic control command is smaller than a second telescopic height corresponding to the second telescopic control command, and the second telescopic height is smaller than or equal to the maximum telescopic height of the elevator car.
Correspondingly, the embodiment of the invention also provides an elevator safety control device, which comprises: the position acquisition unit is used for acquiring the position information of the elevator car in real time; the top impact distance acquisition unit is used for acquiring the top impact distance of the elevator car based on the position information; the judging unit is used for judging whether the top-punching distance meets the preset distance requirement or not; and the command generating unit is used for generating a corresponding car control command under the condition that the top-impacting distance does not accord with the preset distance requirement.
Preferably, the judging unit includes: the first acquisition module is used for acquiring the counterweight position of the elevator counterweight based on the position information; the safety distance calculation module is used for acquiring a counterweight travel distance between the elevator counterweight and a counterweight buffer based on the counterweight position; the second acquisition module is used for acquiring a preset safety protection distance; the judging module is used for judging whether the jacking distance is smaller than or equal to the sum of the counterweight travel distance and the preset safety protection distance; and the determining module is used for determining that the jacking distance does not meet the preset distance requirement under the condition that the jacking distance is less than or equal to the sum of the counterweight travel distance and the preset safety protection distance.
Preferably, the instruction generating unit includes: the elevator stopping control module is used for acquiring the running state of the elevator under the condition that the top punching distance does not meet the preset distance requirement; the first expansion control module is used for generating a first car expansion control command corresponding to the top-impacting distance under the condition that the elevator running state is a normal running state; and the second expansion control module is used for generating a stop control command under the condition that the running state of the elevator is an abnormal running state, and generating a second car expansion control command based on the top-impacting distance.
Preferably, the second telescoping control module is configured to: judging whether the top punching distance is larger than or equal to a first distance value or not; under the condition that the top-impact distance is greater than or equal to the first distance value, generating a first telescopic control instruction based on the first distance value; and under the condition that the top impact distance is smaller than the first distance value, generating a second telescopic control command based on the preset distance requirement, wherein a first telescopic height corresponding to the first telescopic control command is smaller than a second telescopic height corresponding to the second telescopic control command, and the second telescopic height is smaller than or equal to the maximum telescopic height of the elevator car.
Through the technical scheme provided by the invention, the invention at least has the following technical effects:
on the basis of a traditional elevator, a fixed car wall of an elevator car is designed into a telescopic elevator car wall, and the elevator car wall is controlled to actively execute telescopic action when the elevator car has a roof-rushing risk according to the actual operation position of the elevator car in the actual operation process, so that on one hand, extra well space is not required to be arranged as buffering, and the well construction cost and the elevator cost are reduced; on the other hand can effectively protect elevator car top maintainer's personal safety, improves and takes advantage of the terraced security.
Additional features and advantages of embodiments of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the embodiments of the invention without limiting the embodiments of the invention. In the drawings:
fig. 1 is a schematic illustration of a prior art elevator design provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of an elevator safety control system provided by an embodiment of the invention;
fig. 3 is a schematic structural diagram of a car wall in an elevator safety control system provided by an embodiment of the invention;
fig. 4 is a flowchart of a specific implementation of an elevator safety control method provided by an embodiment of the invention;
fig. 5 is a schematic view of a telescopic car wall in the elevator safety control method provided by the embodiment of the invention;
fig. 6 is a schematic diagram of determining whether the top-impact distance meets the requirement of the preset distance in the elevator safety control method provided by the embodiment of the invention;
fig. 7 is a schematic diagram of generating a second car telescoping control command based on a top-impact distance in an elevator safety control method provided by an embodiment of the invention;
fig. 8 is a schematic structural diagram of an elevator safety control apparatus according to an embodiment of the present invention.
Description of the reference numerals
10 elevator car 11 wall
111 upper wall 112 lower wall
20 position detection device 30 control device
40 telescoping device 401 telescoping drive assembly
402 leading subassembly
Detailed Description
In order to solve the technical problems in the prior art, embodiments of the present invention provide an elevator safety control system, a safety control method, and a safety control device, in which an elevator car with a retractable top is used to control the top of the elevator car according to the actual operation condition of the elevator during operation, so that the personal safety of the maintainers can be effectively protected when an accident occurs, and the safety of the elevator can be improved.
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
The terms "system" and "network" in embodiments of the present invention may be used interchangeably. The "plurality" means two or more, and in view of this, the "plurality" may also be understood as "at least two" in the embodiments of the present invention. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" generally indicates that the preceding and following related objects are in an "or" relationship, unless otherwise specified. In addition, it should be understood that the terms first, second, etc. in the description of the embodiments of the invention are used for distinguishing between the descriptions and are not intended to indicate or imply relative importance or order to be construed.
The background art will first be described. Referring to fig. 1, in a conventional elevator design, an elevator car travels up and down in a hoistway, and in order to ensure the safety of passengers riding the elevator, a top-rushing safety distance is set at the top of the hoistway, and when the distance between the travel height of the elevator car and the top of the hoistway is less than the top-rushing safety distance, the elevator car is prohibited from continuing to travel upwards, for example, an elevator control system is forcibly powered off to control a traction machine to stop driving, so that the safety of passengers riding the elevator in the elevator car is ensured.
However, in the practical application process, on one hand, the safe distance of the top-impacting belongs to the safe buffer distance, and the setting of the safe distance or the setting of the limit switch necessarily requires the hoistway to reserve extra height, so that the construction cost of the hoistway is increased; on the other hand, when the elevator has an accident, for example, the elevator cannot be controlled by an elevator control system or a limit switch is damaged, the personal safety of passengers cannot be ensured by the elevator rushing to the top at the moment, and the elevator taking safety is reduced.
In order to solve the above technical problem, referring to fig. 2, an embodiment of the present invention provides an elevator safety control system, where an elevator includes an elevator car 10, the elevator car 10 includes a car wall 11, the car wall 11 is a telescopic structure, and the elevator safety control system includes: a position detection device 20 provided on the elevator car 10 for acquiring position information of the elevator car 10 in a hoistway; a control device 30 electrically connected to the position detection device 20, for acquiring the position information and generating a corresponding car control command; and a telescopic device 40 disposed on the car wall 11, connected to the control device 30, and configured to control the car wall 11 to perform a corresponding telescopic motion based on the car control command.
Further, referring to fig. 3, in the embodiment of the present invention, the car wall 11 includes an upper car wall 111 and a lower car wall 112, the telescopic device 40 connects the upper car wall 111 and the lower car wall 112, the telescopic device 40 includes a telescopic driving assembly 401 and a guiding assembly 402, and the upper car wall 111 moves up and down along the guiding assembly 402 under the driving action of the telescopic driving assembly 401.
Referring to fig. 4, an embodiment of the present invention provides an elevator safety control method, where the method includes:
s10) obtaining the position information of the elevator car in real time;
s20) acquiring the top-impact distance of the elevator car based on the position information;
s30) judging whether the top punching distance meets the requirement of a preset distance;
s40) generating a corresponding car control command under the condition that the top-impacting distance does not meet the preset distance requirement.
In the embodiment of the present invention, a conventional elevator is modified, and the car wall 11 of the elevator car 10 is configured to be a telescopic structure, for example, the car wall 11 may be composed of an upper car wall 111 and a lower car wall 112, wherein the upper car wall 111 and the lower car wall 112 are connected by a telescopic device 40, the telescopic device 40 may be composed of a telescopic driving component 401 and a guiding component 402, for example, the telescopic driving component 401 may be any one of driving components such as a wire motor and a threaded screw, the telescopic driving component 401 is disposed on the top of the upper car wall 111, the guiding component 402 is disposed on the frame structure of the car in match with the stroke of the telescopic driving component 401, for example, the guiding component 402 may be a rack, a sliding rail, and the like disposed in match, the top is rigidly connected to the upper car wall 111, and moves along with the up-down movement of the upper car wall 111, during the actual operation, the control device 30 obtains the position information of the elevator car 10 in the hoistway in real time by the position detecting device 20, for example, in the embodiment of the present invention, the position detecting device 20 may be a magnetic scale installed on the elevator car 10, and the absolute position of the elevator car 10 in the hoistway can be read in real time by the magnetic scale, and the top-hitting distance of the elevator car 10 can be calculated according to the position.
At a certain moment, the control device 30 monitors that the top-impacting distance of the elevator car 10 does not meet a preset distance requirement, for example, the preset distance requirement may be a minimum distance between the elevator car 10 and the top of the hoistway, for example, the minimum distance may be 0.8m, at this moment, the control device 30 immediately generates a corresponding car control command, for example, the car control command is a control command for controlling the car wall 11 to stretch, and after the car control command is sent to the stretching device 40, the stretching device 40 immediately executes a corresponding car wall stretching operation, please refer to fig. 5, by adjusting the elevator car 10 according to the top-impacting distance between the upper side of the elevator car 10 and the top of the hoistway, the occurrence of top-impacting accidents is avoided, meanwhile, the personal safety of the maintainer at the top of the elevator car 10 is effectively protected, and the elevator riding safety is improved.
Meanwhile, in the embodiment of the invention, because the elevator car 10 is arranged to be a telescopic structure and the telescopic control is actively carried out on the elevator car 10 according to the running condition of the elevator in the actual running process of the elevator, an extra buffer space is not required to be arranged at the top of the elevator shaft, the waste of the shaft space can be reduced, and the elevator cost is reduced.
In the embodiment of the present invention, the determining whether the top-punching distance meets a preset distance requirement includes: acquiring the counterweight position of the elevator counterweight based on the position information; obtaining a counterweight travel distance between the elevator counterweight and a counterweight buffer based on the counterweight position; acquiring a preset safety protection distance; judging whether the top impacting distance is smaller than or equal to the sum of the counterweight travel distance and the preset safety protection distance; and under the condition that the jacking distance is less than or equal to the sum of the counterweight travel distance and the preset safety protection distance, determining that the jacking running distance does not meet the preset distance requirement.
As the installation scenarios of each elevator may be different, a corresponding safe operation requirement may be determined according to the relevant attributes of each elevator, please refer to fig. 6, in a possible implementation manner, first, a counterweight position of an elevator counterweight is obtained according to the position information of the elevator car 10, and since the length of a steel wire rope connecting the elevator car and the counterweight is fixed, on the basis of obtaining the position information of the elevator car, the counterweight position of the elevator counterweight is easily obtained, then, a counterweight stroke distance h1 between the elevator counterweight and a counterweight buffer is further obtained, at this time, a preset safety protection distance is further obtained, for example, the preset safety protection distance may be obtained by calculation according to a relevant national standard, for example, in an embodiment of the present invention, the preset safety protection distance may be characterized as follows the requirement of GB 7588: distance delta h between car roof guard rail and lowest component on the top of shaft is 0.3+0.035v2(m) wherein the elevator speed v can be acquired by a magnetic scale.
In the actual monitoring process, the control device judges whether the top-impacting distance of the elevator car (for example, the top-impacting distance is h2) is smaller than or equal to the sum of the counterweight travel distance h1 and the preset safety protection distance Δ h in real time, and in the embodiment of the invention, the top-impacting distance h2 can be the distance between the top of the elevator car and the top of the hoistway. At a certain moment, the control device 30 monitors that the top-impact distance h2 of the elevator car 10 is less than or equal to the sum of the counterweight travel distance h1 and the preset safety protection distance Δ h, and therefore determines that the top-impact distance of the current elevator car 10 does not meet the preset distance requirement.
In this embodiment of the present invention, the generating a corresponding car control command when the top impact distance does not meet the preset distance requirement includes: under the condition that the top punching distance does not meet the preset distance requirement, acquiring the running state of the elevator; generating a first car expansion control command corresponding to the top rushing distance under the condition that the elevator running state is a normal running state; and generating a stopping control command under the condition that the elevator running state is an abnormal running state, and generating a second car expansion control command based on the top-rushing distance.
In one possible embodiment, the monitored distance to the top of the elevator car 10 does not meet the preset distance requirement, so that the elevator operating state is immediately detected. For example, in the embodiment of the present invention, by implementing the technical solution of the present invention, the net height of the elevator shaft is lower than that of a conventional elevator shaft, so when the elevator car 10 moves to the top floor, the distance between the top of the elevator car 10 and the top of the shaft is smaller than h1 +. DELTA.h, however, the elevator operation state is a normal operation state at this time, so a first car control command corresponding to the top-rushing distance is generated, for example, according to the difference between h2 and h1 +. DELTA.h, the elevator car 10 generates a corresponding first car control command, and the height of the elevator car is adjusted in real time under the control of the first car control command to ensure that h2 is h1 +. DELTA.h, thereby reducing the building height of the elevator shaft on the basis of ensuring that the elevator car 10 has a sufficient safe top-rushing distance, and reducing the construction cost of the elevator shaft.
In another possible implementation manner, it is monitored that the top-impacting distance of the elevator car 10 does not meet the preset distance requirement, at this time, it is further obtained that the elevator is in an abnormal operation state, for example, the elevator control system monitors that a steel wire rope of the elevator is broken, at this time, the elevator car continuously impacts upwards so that the top-impacting distance h2 of the elevator car 10 is smaller than h1 +. DELTA.h, so that an elevator stopping control command is immediately generated, and a second car telescoping control command is generated based on the top-impacting distance h2, for example, the elevator car 10 compresses the height of the elevator car 10 to the maximum compressible height according to the second car telescoping control command.
Further, in this embodiment of the present invention, the generating a second car stretch control command based on the top-impact distance includes: judging whether the top punching distance is larger than or equal to a first distance value or not; under the condition that the top-impact distance is greater than or equal to the first distance value, generating a first telescopic control instruction based on the first distance value; and under the condition that the top impact distance is smaller than the first distance value, generating a second telescopic control command based on the preset distance requirement, wherein a first telescopic height corresponding to the first telescopic control command is smaller than a second telescopic height corresponding to the second telescopic control command, and the second telescopic height is smaller than or equal to the maximum telescopic height of the elevator car.
In order to avoid the impact on passengers in the car or the safety threat on the maintenance personnel on the top of the car due to the too large height of the one-time compression, in a possible embodiment, please refer to fig. 7, when generating the second car telescoping control command according to the top-rushing distance, first, according to the first distance value, the first car telescoping control command is generated, for example, to control the upper wall of the elevator car 10 to compress for 0.3m, at this time, the variation of the top-rushing distance under the above-mentioned stopping control command is continuously monitored, for example, at another time, the top-rushing distance is monitored to be smaller than the first distance value, that is, the elevator car 10 still further rushes upwards, so that the second car telescoping control command corresponding to the preset distance requirement is immediately generated, for example, the second car telescoping control command is generated to control the upper wall 111 to compress for 0.5m (that is, further compress for 0.2m), to further protect the personal safety of the service personnel on top of the elevator car.
In the embodiment of the invention, the car wall of the elevator car is controlled to stretch according to the actual running condition of the elevator car 10, so that when the elevator has a top-rushing fault, the personal safety of passengers is effectively protected, and the elevator riding safety is improved.
An elevator safety control device according to an embodiment of the present invention will be described below with reference to the accompanying drawings.
Referring to fig. 8, based on the same inventive concept, an embodiment of the present invention provides an elevator safety control apparatus, including: the position acquisition unit is used for acquiring the position information of the elevator car in real time; the top impact distance acquisition unit is used for acquiring the top impact distance of the elevator car based on the position information; the judging unit is used for judging whether the top-punching distance meets the preset distance requirement or not; and the command generating unit is used for generating a corresponding car control command under the condition that the top-impacting distance does not accord with the preset distance requirement.
In an embodiment of the present invention, the determining unit includes: the first acquisition module is used for acquiring the counterweight position of the elevator counterweight based on the position information; the safety distance calculation module is used for acquiring a counterweight travel distance between the elevator counterweight and a counterweight buffer based on the counterweight position; the second acquisition module is used for acquiring a preset safety protection distance; the judging module is used for judging whether the jacking distance is smaller than or equal to the sum of the counterweight travel distance and the preset safety protection distance; and the determining module is used for determining that the jacking distance does not meet the preset distance requirement under the condition that the jacking distance is less than or equal to the sum of the counterweight travel distance and the preset safety protection distance.
In an embodiment of the present invention, the instruction generating unit includes: the elevator stopping control module is used for acquiring the running state of the elevator under the condition that the top punching distance does not meet the preset distance requirement; the first expansion control module is used for generating a first car expansion control command corresponding to the top-impacting distance under the condition that the elevator running state is a normal running state; and the second expansion control module is used for generating a stop control command under the condition that the running state of the elevator is an abnormal running state, and generating a second car expansion control command based on the top-impacting distance.
In an embodiment of the present invention, the second expansion control module is configured to: judging whether the top punching distance is larger than or equal to a first distance value or not; under the condition that the top-impact distance is greater than or equal to the first distance value, generating a first telescopic control instruction based on the first distance value; and under the condition that the top impact distance is smaller than the first distance value, generating a second telescopic control command based on the preset distance requirement, wherein a first telescopic height corresponding to the first telescopic control command is smaller than a second telescopic height corresponding to the second telescopic control command, and the second telescopic height is smaller than or equal to the maximum telescopic height of the elevator car.
Although the embodiments of the present invention have been described in detail with reference to the accompanying drawings, the embodiments of the present invention are not limited to the details of the above embodiments, and various simple modifications can be made to the technical solutions of the embodiments of the present invention within the technical idea of the embodiments of the present invention, and the simple modifications all belong to the protection scope of the embodiments of the present invention.
It should be noted that the various features described in the above embodiments may be combined in any suitable manner without departing from the scope of the invention. In order to avoid unnecessary repetition, the embodiments of the present invention do not describe every possible combination.
Those skilled in the art will understand that all or part of the steps in the method according to the above embodiments may be implemented by a program, which is stored in a storage medium and includes several instructions to enable a single chip, a chip, or a processor (processor) to execute all or part of the steps in the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In addition, any combination of various different implementation manners of the embodiments of the present invention is also possible, and the embodiments of the present invention should be considered as disclosed in the embodiments of the present invention as long as the combination does not depart from the spirit of the embodiments of the present invention.
Claims (10)
1. The utility model provides an elevator safety control system, the elevator includes the elevator car, the elevator car includes the sedan-chair wall, its characterized in that, sedan-chair wall is extending structure, elevator safety control system includes:
the position detection device is arranged on the elevator car and used for acquiring the position information of the elevator car in a hoistway;
the control device is electrically connected with the position detection device and used for acquiring the position information and generating a corresponding car control command;
and the telescopic device is configured on the car wall, is connected with the control device and is used for controlling the car wall to execute corresponding telescopic action based on the car control command.
2. The elevator safety control system according to claim 1, wherein the walls comprise an upper wall and a lower wall, the telescoping device connects the upper wall and the lower wall, the telescoping device comprises a telescoping drive assembly and a guide assembly, and the upper wall moves up and down along the guide assembly under the drive of the telescoping drive assembly.
3. An elevator safety control method, characterized in that the method comprises:
acquiring position information of an elevator car in real time;
acquiring a top-impact distance of the elevator car based on the position information;
judging whether the top punching distance meets the preset distance requirement or not;
and generating a corresponding car control command under the condition that the top-impacting distance does not meet the preset distance requirement.
4. The method of claim 3, wherein said determining whether said impact distance meets a predetermined distance requirement comprises:
acquiring the counterweight position of the elevator counterweight based on the position information;
obtaining a counterweight travel distance between the elevator counterweight and a counterweight buffer based on the counterweight position;
acquiring a preset safety protection distance;
judging whether the top impacting distance is smaller than or equal to the sum of the counterweight travel distance and the preset safety protection distance;
and under the condition that the jacking distance is smaller than or equal to the sum of the counterweight travel distance and the preset safety protection distance, determining that the jacking distance does not meet the preset distance requirement.
5. The method of claim 3, wherein generating a corresponding car control command if the distance to top does not meet the preset distance requirement comprises:
under the condition that the top punching distance does not meet the preset distance requirement, acquiring the running state of the elevator;
generating a first car expansion control command corresponding to the top rushing distance under the condition that the elevator running state is a normal running state;
and generating a stopping control command under the condition that the elevator running state is an abnormal running state, and generating a second car expansion control command based on the top-rushing distance.
6. The method of claim 5, wherein generating a second car stretch control command based on the top-impact distance comprises:
judging whether the top punching distance is larger than or equal to a first distance value or not;
under the condition that the top-impact distance is greater than or equal to the first distance value, generating a first telescopic control instruction based on the first distance value;
and under the condition that the top impact distance is smaller than the first distance value, generating a second telescopic control command based on the preset distance requirement, wherein a first telescopic height corresponding to the first telescopic control command is smaller than a second telescopic height corresponding to the second telescopic control command, and the second telescopic height is smaller than or equal to the maximum telescopic height of the elevator car.
7. An elevator safety control apparatus, characterized in that the apparatus comprises:
the position acquisition unit is used for acquiring the position information of the elevator car in real time;
the top impact distance acquisition unit is used for acquiring the top impact distance of the elevator car based on the position information;
the judging unit is used for judging whether the top-punching distance meets the preset distance requirement or not;
and the command generating unit is used for generating a corresponding car control command under the condition that the top-impacting distance does not accord with the preset distance requirement.
8. The apparatus according to claim 7, wherein the judging unit includes:
the first acquisition module is used for acquiring the counterweight position of the elevator counterweight based on the position information;
the safety distance calculation module is used for acquiring a counterweight travel distance between the elevator counterweight and a counterweight buffer based on the counterweight position;
the second acquisition module is used for acquiring a preset safety protection distance;
the judging module is used for judging whether the jacking distance is smaller than or equal to the sum of the counterweight travel distance and the preset safety protection distance;
and the determining module is used for determining that the jacking distance does not meet the preset distance requirement under the condition that the jacking distance is less than or equal to the sum of the counterweight travel distance and the preset safety protection distance.
9. The apparatus of claim 7, wherein the instruction generation unit comprises:
the elevator stopping control module is used for acquiring the running state of the elevator under the condition that the top punching distance does not meet the preset distance requirement;
the first expansion control module is used for generating a first car expansion control command corresponding to the top-impacting distance under the condition that the elevator running state is a normal running state;
and the second expansion control module is used for generating a stop control command under the condition that the running state of the elevator is an abnormal running state, and generating a second car expansion control command based on the top-impacting distance.
10. The apparatus of claim 9, wherein the second telescoping control module is to:
judging whether the top punching distance is larger than or equal to a first distance value or not;
under the condition that the top-impact distance is greater than or equal to the first distance value, generating a first telescopic control instruction based on the first distance value;
and under the condition that the top impact distance is smaller than the first distance value, generating a second telescopic control command based on the preset distance requirement, wherein a first telescopic height corresponding to the first telescopic control command is smaller than a second telescopic height corresponding to the second telescopic control command, and the second telescopic height is smaller than or equal to the maximum telescopic height of the elevator car.
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