CN115557357B - Intelligent safety control method and system for construction elevator - Google Patents
Intelligent safety control method and system for construction elevator Download PDFInfo
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- CN115557357B CN115557357B CN202211172060.2A CN202211172060A CN115557357B CN 115557357 B CN115557357 B CN 115557357B CN 202211172060 A CN202211172060 A CN 202211172060A CN 115557357 B CN115557357 B CN 115557357B
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- guide rail
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B9/00—Kinds or types of lifts in, or associated with, buildings or other structures
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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
- B66B7/00—Other common features of elevators
- B66B7/12—Checking, lubricating, or cleaning means for ropes, cables or guides
- B66B7/1253—Lubricating means
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Types And Forms Of Lifts (AREA)
Abstract
The invention relates to a construction elevator safety intelligent control method and a control system, wherein the method comprises the following steps: dividing the guide rail frame into a plurality of areas according to standard sections, and judging whether the suspension cage is jammed when moving in each standard section according to the running state of the suspension cage when running along the guide rail frame, wherein the running state comprises the acceleration, running time, height and the like of the suspension cage; determining a jamming area; when the cage runs to the jamming area next time, lubricating measures with different degrees are automatically adopted according to the jamming conditions, so that the resistance between the cage and the guide rail frame is reduced; judging the resistance of the suspension cage during operation before and after the lubrication measures according to the different automatic taking degrees of the jamming conditions, and taking emergency measures for the suspension cage. According to the application, according to different resistances between standard sections at different positions in the guide rail frame and the hanging cage, when the hanging cage moves into the blocking area again, different amounts of lubricating oil at the spraying port spraying position are controlled according to the difference of the resistances, so that the intelligent control effect on the lifter is improved.
Description
Technical Field
The invention relates to the technical field of safety control of construction elevators, in particular to a safety intelligent control method and a control system of the construction elevators.
Background
Along with the sustainable development of national economy in China, the number of construction elevators for constructing high-rise buildings is increased gradually, and the construction elevators can be applied to various construction occasions such as bridge construction, large-scale chemical plant cooling towers, power plant chimneys, broadcast television towers, coal mines and the like besides the high-rise buildings, and become indispensable mechanical equipment in the building industry. The construction elevator is also called as a construction elevator for a building, is usually matched with a tower crane to be used in the building construction process, has a general load capacity of 1-3 tons and can be used for carrying people and cargo.
Elevators for construction generally include a vertically disposed track frame and a cage lifted along the track frame for transporting people and/or construction materials. Each guide rail frame is formed by vertically and sequentially butting a plurality of standard joints, and the butting surface is connected with nuts by bolts. The cage is meshed with the rack on the guide rail frame through a motor driving gear arranged on the side face of the cage, and the motor arranged at the top end of the guide rail frame is matched to drive the steel cable to pull the cage, so that the lifter is driven to realize vertical lifting motion. The meshing condition of the gear and the rack has great influence on the running efficiency, the working reliability and the stability of the whole machine, and the lubrication is needed at fixed time. The sliding between the tooth surfaces can be promoted through lubrication, the temperature rise caused by friction between the tooth surfaces is restrained, the resistance and friction work are reduced, the noise, vibration and impact between the gear and the rack are reduced, and the service life is prolonged.
The gear and the rack are easy to be blocked in the long-time friction process between the suspension cage and the guide rail frame, so that the running speed of the suspension cage is reduced, and hidden danger can be generated to the safety of the lifter when the blocking is serious.
However, elevators in worksites are often difficult to lubricate in time due to administrative negligence, hysteresis or other reasons, so that the operation of the elevators is in a dangerous state.
Disclosure of Invention
The invention aims to provide a safe and intelligent control method for a construction elevator, which has the characteristic of automatically lubricating a gear and a rack in an operation state of the elevator.
The first object of the present invention is achieved by the following technical solutions:
a construction hoist safety intelligent control method, the method comprising:
dividing the guide rail frame into a plurality of areas according to standard sections, and judging whether the suspension cage is jammed when moving in each standard section according to the running state of the suspension cage when running along the guide rail frame, wherein the running state comprises the acceleration, running time, height and the like of the suspension cage;
determining a jamming area;
when the cage runs to the jamming area next time, lubricating measures with different degrees are automatically adopted according to different jamming conditions, so that the resistance between the cage and the guide rail frame is reduced;
judging the resistance of the cage in running before and after the lubrication measures with different degrees are automatically adopted according to the different jamming conditions, and taking emergency measures for the cage.
Through adopting above-mentioned technical scheme, when the cage removes along the guide rail frame, obtain the running state of cage when removing along every standard festival in the guide rail frame, and then with the great definition of resistance between standard festival in the guide rail frame and the guide rail for the jam state, when the cage passes through the standard festival of jam state again this moment, take the lubrication measure of different degree according to the difference of jam condition automatically to reduce the resistance between cage and the standard festival, be favorable to improving the intelligent control to the lift. According to different resistances between standard sections at different positions in the guide rail frame and the hanging cage, when the hanging cage moves into the blocking area again, different amounts of lubricating oil at the spraying position of the spraying port can be controlled according to the resistance, so that the intelligent control of the lifter is improved
The present invention may be further configured in a preferred example to: judging whether the suspension cage is jammed when moving in each standard section according to the running state of the suspension cage when running along the guide rail frame comprises the following steps: the total weight M1 of the cage is obtained, the height H of the floor is moved, the expected acceleration a1 is calculated, and the theoretical resistance f1 is calculated according to the acceleration a 1;
acquiring actual running acceleration a2 in the lifting process of the suspension cage, and calculating actual resistance f2 according to the acceleration a 2;
and calculating the absolute value of the difference between the actual resistance f2 and the theoretical resistance f1, obtaining a first calculated value, comparing the first calculated value with a preset first threshold value, and defining the space between the cage and the guide rail frame as jamming when the first calculated value is larger than the first threshold value.
Through adopting above-mentioned technical scheme, at first obtain the total weight M1 of cage and the staff in the cage through the computer is automatic, calculate the required estimated acceleration a1 when the cage moves along the guide rail frame according to the height between moving destination floor and the initial floor, and the driving force F of top motor and side motor output, calculate theoretical resistance F1 according to driving force F, estimated acceleration a1 and total weight M1, theoretical resistance F1 represents the resistance between cage and the guide rail frame under the normal state, and the resistance under the normal state is unchangeable at cage removal in-process.
The method comprises the steps of calculating the actual resistance f2 of the suspension cage in the actual running state by using the same method, comparing the difference between the actual resistance f2 and the theoretical resistance f1, further obtaining a first calculated value, and comparing the first calculated value with a preset threshold value, so as to judge whether the suspension cage is jammed with the guide rail frame.
The present invention may be further configured in a preferred example to: the determining the jamming area comprises the following steps: the method comprises the steps of respectively obtaining actual resistance f2 of the suspension cage when the suspension cage runs on each standard section, defining the standard section with a first calculated value larger than a first threshold value as a jamming standard section when the suspension cage runs along the standard section, and marking the jamming severity degree of a plurality of jamming standard sections according to the resistance of each jamming standard section.
Through adopting above-mentioned technical scheme, divide into a plurality of region with the guide rail frame according to the height of standard festival, when the cage removes along the guide rail frame, acquire respectively the frictional force between every cage and every standard festival in the guide rail frame to screen the standard festival on the guide rail frame respectively, will be with the greater standard festival of resistance between the cage definition as the jamming standard festival, and constitute the jamming region with a plurality of jamming standard festival. And the standard jamming section in the jamming area is marked according to the jamming severity according to the jamming resistance, so that when the hanging cage moves to the standard jamming section, a computer can acquire jamming conditions.
The present invention may be further configured in a preferred example to: when the cage next time moves to the jamming area, automatically taking lubricating measures of different degrees according to different jamming conditions, and reducing the resistance between the cage and the guide rail frame comprises the following steps:
a spraying opening for spraying lubricating oil is arranged on the suspension cage, and the spraying opening faces between a gear of the suspension cage and a rack of the guide rail frame;
when the cage runs to the jamming area again, the amount of lubricating oil sprayed out of the spraying opening is adjusted according to the jamming severity degree corresponding to the jamming standard section in the jamming area.
Through adopting above-mentioned technical scheme, be provided with the mouth that sprays in advance at the top of cage, the mouth that sprays is towards the meshing department of gear and rack to the mouth that sprays can spray the lubricating oil that is used for making gear and rack lubrication. In the process that the hanging cage moves along the guide rail frame, when the hanging cage moves to a clamping standard section in a clamping area, the computer controls the quantity of lubricating oil at the spraying position of the spraying port according to the latest clamping severity, namely, the more the clamping is, the more the lubricating oil is consumed, the more the lubricating oil needs to be sprayed, so that the lifter can control the quantity of the lubricating oil according to the actual resistance between the hanging cage and the standard section, and the lubricating oil is in a proper quantity state.
The present invention may be further configured in a preferred example to: the judgment of the resistance of the lifting cage during operation before and after the lubrication measures with different degrees is automatically adopted according to different jamming conditions comprises the following steps:
acquiring the acceleration a3 of the lubricated cage when running in the blocking area, and calculating the lubricated resistance f3 according to the total weight of the cage;
and calculating the lubrication resistance f3' of the equal-mass hanging cage by utilizing the proportional relation between the total weight of the hanging cage and the total weight of the hanging cage in the last time.
By adopting the technical scheme, because the weight of each time the cage is operated can not be the same, therefore obtain the total mass M2 of next cage, at first calculate the resistance f3 that total mass M2 corresponds, the positive proportional relation is between resistance and the cage weight again, calculate the time difference between total weight M2 of this time and the total weight M1 of last cage, and then calculate according to time difference and when the total weight M2 of this time and the total weight M1 of last cage weight under the same circumstances of weight of lubrication resistance f3', and then be favorable to making both sides measuring condition be in under the same condition, be favorable to eliminating the error.
The present invention may be further configured in a preferred example to: the emergency measures for the cage comprise:
comparing the magnitude of the lubrication resistance f3' with the magnitude of the resistance f2, calculating the difference between the lubrication resistance f3' and the resistance f2, and obtaining the absolute value of the difference between the lubrication resistance f3' and the resistance f2, thereby obtaining a second calculated value;
comparing the second calculated value with a preset second threshold value, and judging whether the lubrication measure is effective or not;
and if the lubrication measures are ineffective, taking emergency measures for the suspension cage.
By adopting the technical scheme, the lubrication resistance f3 'is compared with the actual resistance f2, and a second calculated value is calculated according to the absolute value of the difference between the lubrication resistance f3' and the actual resistance f2, wherein the second calculated value indicates whether the resistance is reduced due to lubrication measures when the lubricated cage with the same weight runs at the same position. If the second calculated value is smaller than the preset second threshold value, the effect of the lubrication measures is not obvious, the resistance between the standard joint and the suspension cage is other resistance besides friction, and the other resistance accounts for a large part, so that mechanical faults can exist.
The present invention may be further configured in a preferred example to: the emergency measure comprises:
the output power of the top motor to the steel cable is reduced, and the moving speed of the suspension cage is reduced;
acquiring the moving direction of the hanging cage, and controlling the top motor and the side motor to drive the hanging cage to move reversely so as to enable the hanging cage to be separated from the blocking area;
and returning the cage to the normal moving direction again, and continuing to operate.
By adopting the technical scheme, after the lubrication measures fail, only the lubrication effect is not obvious, and mechanical faults and accidental faults are possible. Therefore, firstly, the output force of the top motor and the side motor to the cage is reduced, the tension of the steel cable to the cage is reduced, the cage is enabled to run at a gentle speed, the acceleration of the cage is close to zero, and the force of the steel cable and the gear to the cage is minimum. And then controlling the cage to move reversely, so that the cage is separated from the blocking standard section at the blocking area, and the possibility of the cage moving along the guide rail frame is improved. Finally, the suspension cage is driven to move in a preset direction again, so that the suspension cage is tried again, the impact force between the suspension cage and the blocking standard section is utilized to try to overcome the resistance, and the possibility of accidental faults is eliminated.
The present invention may be further configured in a preferred example to: the emergency measure further comprises:
when the top motor repeatedly drives the hanging cage to reversely move and can not be separated from the blocking area, the top motor drives the hanging cage to move to the nearest floor door to stop, and workers in the hanging cage leave the hanging cage.
By adopting the technical scheme, if the resistance between the suspension cage and the standard joint still cannot be overcome after the test is performed, the resistance at the moment is defined as being caused by mechanical faults, so that the suspension cage cannot normally move continuously. In order to ensure the personal safety of the staff in the cage, the cage is moved to the door opening of the nearest floor, and the cage is stopped for operation, so that the staff can leave the cage quickly.
In a second aspect, the present application provides a construction hoist safety intelligent control system, which adopts the following technical scheme:
a construction elevator safety intelligent control system comprises
The acceleration detection module is used for detecting acceleration data when the suspension cage moves along the guide rail frame in real time;
the weight detection module is used for acquiring the total weight of workers, tools and the like in the suspension cage;
the driving force calculation module is used for calculating the output force of the top motor and the side motor acting on the cage;
the calculation module is used for calculating the resistance between the suspension cage and the standard joint according to the total weight of the suspension cage, the acceleration data and the output force, marking the jamming severity degree of the jamming standard joint according to the resistance, and controlling the spraying port to spray lubricating oil;
and the lubricating oil spraying device is used for responding to the control signal of the calculation module so as to spray the corresponding amount of lubricating oil at the position according to the jamming severity degree between the suspension cage and the standard section.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to different resistances between standard sections at different positions in the guide rail frame and the suspension cage, when the suspension cage moves into the blocking area again, different amounts of lubricating oil at the spraying position of the spraying port can be controlled according to the resistance, so that intelligent control of the lifter is improved;
2. when the lifting cage is jammed with the standard section for the first time, the lifting cage can be controlled to impact the jammed position again after one-time reverse movement, so that accidental faults are eliminated, and the intelligence of the lifting cage in operation is improved.
Drawings
FIG. 1 is a flow chart of a method for intelligent control of construction hoist safety according to the present application;
FIG. 2 is a flow chart of a method of determining whether a cage is jammed when moving within each standard section according to the running state of the cage when running along a rail frame;
fig. 3 is a flow chart of a method for taking emergency measures on the hanging cage according to the resistance of the hanging cage when the hanging cage runs before and after the lubrication measures with different degrees are automatically taken according to different jamming conditions in the judgment of the present application.
Detailed Description
The invention is described in further detail below with reference to fig. 1-3.
An embodiment of the invention provides a safe and intelligent control method for a construction lifter, and referring to fig. 1 and 2, the method mainly comprises the following steps:
s10, dividing the guide rail frame into a plurality of areas according to standard sections, and judging whether the suspension cage is jammed when moving in each standard section according to the running state of the suspension cage when running along the guide rail frame, wherein the running state comprises the acceleration, the running time, the height and the like of the suspension cage.
The guide rail frame is formed by vertically and sequentially butting a plurality of standard sections, racks are arranged on each standard section, and adjacent sections of racks are sequentially butted to form a track for the movement of the hanging cage. The side of the cage is rotatably provided with a gear which is driven by a side motor. Dividing the guide rail frame into a plurality of areas according to the height of the standard section, and then sequentially passing through each area when the cage moves along the guide rail frame in a lifting manner, acquiring the running state of the cage in each area, and judging whether the area can cause the gear and the rack to be blocked or not according to the running state of the cage.
S11, acquiring the total weight M11 of the cage, moving the floor height H, calculating the estimated acceleration a1, and calculating the theoretical resistance f1 according to the acceleration a1.
When the elevator is tested to be safe, the cage is stopped at the floor door of any floor, and the cage is opened, so that a worker enters the cage, and a moving target floor is set for the cage. The height difference between the starting floor and the destination floor is a height H, which is at least greater than the height of two standard knots, each standard knot being a height H. The total weight M1, the estimated running time t1 and the acceleration a1 of the cage and the workers in the cage are obtained by the sensors arranged in the cage. The theoretical resistance f1 of the cage running along each standard joint is calculated from the total weight M1 and the height h.
The method for calculating the acceleration a1 comprises the following steps:
f is the pulling force of the top motor pulling the steel cable to the cage and the output force of the side motor, g is the gravitational acceleration of the elevator. When the cage is in a variable speed state, the absolute value of a1 is greater than 0. When the cage is in a constant speed state, the absolute value of a1 is equal to 0.
The magnitude of the theoretical resistance f1 is calculated according to the calculation formula of the acceleration a1,
when the cage is in a variable speed condition,
. When the cage is in a uniform speed stateWhen descending, the wearer is strapped with +>
。
Under normal conditions, the theoretical resistance f1 of the basket moving along each standard section is equal.
S12, acquiring actual running time t2 and acceleration a2 when each standard section passes through the height of each section in the lifting process of the suspension cage, and calculating actual resistance f2 according to the acceleration a 2.
The calculation formula of the actual resistance f2 is:
when the cage is in a variable speed condition,
. When the cage is in a constant speed state, +.>
。
S13, calculating the absolute value of the difference between the actual resistance f2 and the theoretical resistance f1, obtaining a first calculated value related to the magnitude relation between the actual resistance f2 and the theoretical resistance f1, comparing the first calculated value with a preset first threshold value, and judging whether the actual resistance f2 is in a normal range.
In general, the actual resistance f2 has a value greater than the theoretical resistance f1. If the first calculated value is smaller than the first threshold value, the cage and the guide rail frame are in a normal state, and lubrication is not needed. If the first calculated value is larger than the first threshold value, the suspension cage and the guide rail frame are in a blocking state, and lubrication is needed when the suspension cage runs to the position.
Referring to fig. 1, S20, a jam area is determined.
The blocking area is composed of one or more standard sections which are in blocking state with the hanging cage. Specifically, the guide rail frame is composed of a plurality of standard sections. And when the suspension cage moves along the guide rail frame, respectively acquiring the actual resistance f2 between the suspension cage and each section of standard section, and calculating the actual resistance f2 and the theoretical resistance f1 corresponding to each section of standard section to respectively obtain a first calculated value corresponding to each section of standard section. During the moving process of the cage, each standard section corresponds to a first calculated value.
The magnitude relation of the first calculated value calculated according to each standard knot represents the magnitude of resistance between the standard knot and the cage at the corresponding position. The greater the first calculation, the greater the resistance to movement of the cage to the standard joint.
Screening out standard knots with the first calculated value larger than the first threshold value, wherein the standard knots are defined as jamming standard knots, the jamming standard knots form a jamming area, and the jamming area is formed by one or more jamming standard knots.
According to the first calculated value corresponding to the jamming standard in the jamming area, the jamming standard sections are arranged, the larger the value of the first calculated value is, the larger the resistance between the standard section and the hanging cage at the position is, and the jamming severity is higher. Therefore, the jamming standard section in the jamming area is marked with the jamming severity according to the first calculated value. The greater the value of the first calculated value, the higher the level of the jamming severity.
Referring to fig. 1, S30, when the cage next runs to the jamming area, lubrication measures with different degrees are automatically adopted according to different jamming conditions, so that the resistance between the cage and the guide rail frame is reduced.
When the cage passes through the blocking area, the spraying port is controlled to spray lubricating oil to reduce friction force. Specifically, a spraying port capable of spraying lubricating oil is arranged on the suspension cage in advance, so that the spraying port faces to the meshing position of the gear and the rack. When the cage passes through the blocking area, lubricating oil is sprayed towards the meshing position of the gear and the rack through the spraying opening, so that the resistance between the gear and the rack is reduced. And the higher the jamming severity level is, the more the quantity of lubricating oil sprayed out of the spraying port is, so that the jamming position is fully lubricated.
Referring to fig. 1 and 3, S40, judging the resistance of the cage when running before and after the lubrication measures with different degrees are automatically taken according to the different jamming conditions, and taking emergency measures for the cage.
S41, acquiring the acceleration a3 of the lubricated cage when running in the jamming area, and calculating the lubricated resistance f3 according to the total weight of the cage.
The acceleration a3 of the cage passing through the standard section where the lubrication measures have been taken again, the output force F of the top motor and the side motor, and the total weight M2 of the cage and the staff in the cage are obtained. Calculating the resistance f3 between the standard joint and the suspension cage after lubrication, wherein the resistance f3 is as follows:
s42, comparing whether the total weight M2 and the total weight M1 are changed, and if the total weight m2=total weight M1, defining the resistance f3 as the lubrication resistance f3'.
If the total weight m2 is equal to the total weight M1, the multiple k is calculated according to the proportional relation between the total weight M2 and the total weight M1, and the resistance f3 is equivalent to the friction force since most of the resistance f3 is composed of friction force in the normal state. Since the friction force is proportional to the weight, the output force of the motor to the cage is also proportional to the weight, and the lubrication resistance f3' =k represents the resistance f3.
S43, comparing the lubricating resistance f3' with the resistance f2, judging whether the lubricating measures are effective, and taking emergency measures for the suspension cage when the lubricating measures are ineffective.
Specifically, the values of the lubrication resistance f3' and the resistance f2 are subtracted, and the absolute value of the difference between the two is calculated, and this absolute value is defined as the second calculated value. And then comparing the second calculated value with a preset second threshold value to judge whether the lubrication measure is effective. If the second calculated value is smaller than the second threshold value, the lubrication measure is effective, and the resistance between the suspension cage and the jamming standard section in the jamming area can be reduced.
If the second calculated value is greater than the second threshold value, the lubrication measure is not effective, and the resistance f3' may be a resistance which cannot be reduced by the lubricating oil due to the fact that the standard joint is inclined, and mechanical factors such as dislocation of the rack, bending of the rack or tooth breakage of the rack are dominant.
S44, taking emergency measures on the suspension cage. The emergency measures include reducing the output power of the top motor and the side motors, reducing the speed of the cage to allow the cage to run at a steady speed, thereby reducing the pull force of the cage on the wire rope when jammed.
And controlling the top motor and the side motors to reversely rotate, so that the cage temporarily leaves the blocking area according to the original path. And after the cage leaves the blocking area, the cage moves again according to the set route, and the impact is tried to overcome the resistance of the blocking area to the cage.
If the cage is still unable to continue moving after the reverse attempt, the state between the cage and the rail frame at this time is defined as a failure state. And stopping the impact of the suspension cage on the guide rail frame. The top motor and the side motors are controlled to return the cage to the original path, and the cage is stopped at the nearest floor door, and the gate of the cage is opened so as to facilitate the staff in the cage to escape from the cage. Meanwhile, the suspension cage stops running continuously to give out a fault alarm so as to remind maintenance personnel that the suspension cage is out of order due to mechanical fault.
Embodiment two:
the embodiment discloses a construction elevator safety intelligent control system. A construction elevator safety intelligent control system comprises
The acceleration detection module is used for detecting acceleration data when the suspension cage moves along the guide rail frame in real time;
the weight detection module is used for acquiring the total weight of workers, tools and the like in the suspension cage;
the driving force calculation module is used for calculating the output force of the top motor and the side motor acting on the cage;
the calculation module is used for calculating the resistance between the suspension cage and the standard joint according to the total weight of the suspension cage, the acceleration data and the output force, marking the jamming severity degree of the jamming standard joint according to the resistance, and controlling the spraying port to spray lubricating oil;
and the lubricating oil spraying device is used for responding to the control signal of the calculation module so as to spray the corresponding amount of lubricating oil at the position according to the jamming severity degree between the suspension cage and the standard section.
The present embodiment is only for explanation of the present invention and is not to be construed as limiting the present invention, and modifications to the present embodiment, which may not creatively contribute to the present invention as required by those skilled in the art after reading the present specification, are all protected by patent laws within the scope of claims of the present invention.
Claims (9)
1. The intelligent control method for the safety of the construction hoist is characterized by comprising the following steps of:
dividing the guide rail frame into a plurality of areas according to standard sections, and judging whether the suspension cage is jammed when moving in each standard section according to the running state of the suspension cage when running along the guide rail frame, wherein the running state comprises the acceleration, the running time, the height and the total weight of the suspension cage;
determining a jamming area;
when the cage runs to the jamming area next time, lubricating measures with different degrees are automatically adopted according to different jamming conditions, so that the resistance between the cage and the guide rail frame is reduced;
judging the resistance of the cage in running before and after the lubrication measures with different degrees are automatically adopted according to the different jamming conditions, and taking emergency measures for the cage.
2. The intelligent control method for safety of a construction hoist according to claim 1, wherein the judging whether the cage is jammed when moving in each standard section according to the operation state of the cage when operating along the guide rail frame comprises:
the total weight M1 of the cage is obtained, the height H of the floor is moved, the expected acceleration a1 is calculated, and the theoretical resistance f1 is calculated according to the acceleration a 1;
acquiring actual running acceleration a2 in the lifting process of the suspension cage, and calculating actual resistance f2 according to the acceleration a 2;
and calculating the absolute value of the difference between the actual resistance f2 and the theoretical resistance f1, obtaining a first calculated value, comparing the first calculated value with a preset first threshold value, and defining the space between the cage and the guide rail frame as jamming when the first calculated value is larger than the first threshold value.
3. The construction elevator safety intelligent control method according to claim 1, wherein the determining a seized area includes:
the method comprises the steps of respectively obtaining actual resistance f2 of the suspension cage when the suspension cage runs on each standard section, defining the standard section with a first calculated value larger than a first threshold value as a jamming standard section when the suspension cage runs along the standard section, and marking the jamming severity degree of a plurality of jamming standard sections according to the resistance of each jamming standard section.
4. The construction hoist safety intelligent control method according to claim 1, wherein when the cage is next operated to the seizing area, the lubrication measures of different degrees are automatically taken according to the difference of seizing conditions, and reducing the resistance between the cage and the guide rail frame comprises:
a spraying opening for spraying lubricating oil is arranged on the suspension cage, and the spraying opening faces between a gear of the suspension cage and a rack of the guide rail frame;
when the cage runs to the jamming area again, the amount of lubricating oil sprayed out of the spraying opening is adjusted according to the jamming severity degree corresponding to the jamming standard section in the jamming area.
5. The intelligent control method for safety of a construction hoist according to claim 1, wherein the judging the resistance of the cage before and after running according to the different degrees of lubrication measures automatically based on the jamming condition comprises:
acquiring the acceleration a3 of the lubricated cage when running in the blocking area, and calculating the lubricated resistance f3 according to the total weight of the cage;
and calculating the lubrication resistance f3' of the equal-mass hanging cage by utilizing the proportional relation between the total weight of the hanging cage and the total weight of the hanging cage in the last time.
6. The intelligent control method for safety of a construction hoist according to claim 5, wherein the taking emergency measures to the cage comprises:
comparing the magnitude of the lubrication resistance f3' with the magnitude of the resistance f2, calculating the difference between the lubrication resistance f3' and the resistance f2, and obtaining the absolute value of the difference between the lubrication resistance f3' and the resistance f2, thereby obtaining a second calculated value;
comparing the second calculated value with a preset second threshold value, and judging whether the lubrication measure is effective or not;
and if the lubrication measures are ineffective, taking emergency measures for the suspension cage.
7. The construction hoist safety intelligent control method according to claim 6, characterized in that the emergency measures include:
the output power of the top motor to the steel cable is reduced, and the moving speed of the suspension cage is reduced;
acquiring the moving direction of the hanging cage, and controlling the top motor and the side motor to drive the hanging cage to move reversely so as to enable the hanging cage to be separated from the blocking area;
and returning the cage to the normal moving direction again, and continuing to operate.
8. The construction hoist safety intelligent control method according to claim 7, characterized in that the emergency measure further comprises:
when the top motor repeatedly drives the hanging cage to reversely move and can not be separated from the blocking area, the top motor drives the hanging cage to move to the nearest floor door to stop, and workers in the hanging cage leave the hanging cage.
9. The utility model provides a construction elevator safety intelligence control system which characterized in that includes:
the acceleration detection module is used for detecting acceleration data when the suspension cage moves along the guide rail frame in real time;
the weight detection module is used for acquiring the total weight of workers, tools and the like in the suspension cage;
the driving force calculation module is used for calculating the output force of the top motor and the side motor acting on the cage;
the calculation module is used for calculating the resistance between the suspension cage and the standard joint according to the total weight of the suspension cage, the acceleration data and the output force, marking the jamming severity degree of the jamming standard joint according to the resistance, and controlling the spraying port to spray lubricating oil;
and the lubricating oil spraying device is used for responding to the control signal of the calculation module so as to spray the corresponding amount of lubricating oil at the position according to the jamming severity degree between the suspension cage and the standard section.
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| CN202211172060.2A CN115557357B (en) | 2022-09-26 | 2022-09-26 | Intelligent safety control method and system for construction elevator |
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| CN101683945B (en) * | 2008-09-27 | 2014-03-12 | 三菱电机大楼技术服务株式会社 | Diagnosis operation device and method of elevator |
| KR102144762B1 (en) * | 2018-09-05 | 2020-08-14 | 유병삼 | Lubrication equipment for construction lifts |
| CN211198271U (en) * | 2019-08-30 | 2020-08-07 | 岳阳市鹏程建筑工程有限公司 | Oil supply device for rack of construction elevator |
| CN212450171U (en) * | 2020-05-27 | 2021-02-02 | 贵州鼎盛鑫检测有限公司 | Automatic lubricating device for elevator rack |
| CN114212637A (en) * | 2021-12-15 | 2022-03-22 | 北京建筑机械化研究院有限公司 | Method and system for detecting running stability of elevator |
| CN114524349A (en) * | 2022-02-25 | 2022-05-24 | 左国进 | Chain wheel driving device for elevator |
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