CN115557357A - Construction elevator safety intelligent control method and control system thereof - Google Patents
Construction elevator safety intelligent control method and control system thereof Download PDFInfo
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- CN115557357A CN115557357A CN202211172060.2A CN202211172060A CN115557357A CN 115557357 A CN115557357 A CN 115557357A CN 202211172060 A CN202211172060 A CN 202211172060A CN 115557357 A CN115557357 A CN 115557357A
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- jamming
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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)
- Types And Forms Of Lifts (AREA)
- Maintenance And Inspection Apparatuses For Elevators (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 the standard sections, and judging whether the suspension cage is jammed in each standard section when moving in the standard section according to the running state of the suspension cage along the guide rail frame, wherein the running state comprises the acceleration, the running time, the height and the like of the suspension cage; determining a jamming area; when the suspension cage runs to a jamming area next time, automatically taking lubricating measures of different degrees according to different jamming conditions, and reducing the resistance between the suspension cage and the guide rail frame; and judging the resistance of the cage before and after the operation of the cage according to different automatic lubrication measures of different jamming conditions, and taking emergency measures for the cage. This application is different according to the resistance between the standard festival of different positions in the guide rail frame and the cage, when the cage removed to the bite region again in, sprays the lubricating oil of mouthful injection department difference according to the different control of resistance to be favorable to improving the effect to the intelligent control of lift.
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 safety intelligent control system of a construction elevator.
Background
With the continuous development of national economy in China, high-rise buildings are gradually increased, the number of construction elevators for building the high-rise buildings is rapidly increased, the construction elevators can be applied to various construction occasions such as the construction of bridges, large-scale factory cooling towers, chimneys of power plants, broadcast television towers, coal mines and the like besides the high-rise buildings, and the construction elevators become necessary mechanical equipment in the building industry. The construction elevator is also called as a construction elevator for buildings, is usually matched with a tower crane in the construction process of the buildings, generally has the carrying capacity of 1-3 tons, and can be used for carrying people and goods.
An elevator for construction generally includes a guide rail frame vertically disposed, and a cage for transporting persons and/or construction materials, which is elevated along the guide rail frame. Each guide rail frame is formed by vertically and sequentially butting a plurality of standard sections, and the butting surfaces are connected with nuts through bolts. The suspension cage is meshed with the rack on the guide rail frame through a motor driving gear arranged on the side face of the suspension cage, and the motor arranged on the top end of the guide rail frame is matched to drive a steel cable to pull the suspension cage, so that the elevator is driven to realize vertical lifting movement. The meshing condition of the gear and the rack has great influence on the operation efficiency, the working reliability and the stability of the whole machine, and the lubrication is required to be carried out at regular time. The lubricating can promote the sliding between the tooth surfaces, inhibit the temperature rise caused by the friction between the tooth surfaces, reduce the resistance and the friction work, reduce the noise, the vibration and the impact between the gear and the rack, and prolong the service life.
The gear and the rack are easy to jam in the friction process between the suspension cage and the guide rail frame, so that the running speed of the suspension cage is reduced, and potential safety hazards to the lifter can be generated when the jamming is serious.
However, elevators in worksites are often difficult to lubricate in a timely manner due to carelessness, hysteresis, or other reasons, such that the operation of the elevator 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 the running state of the elevator.
The above object of the present invention is achieved by the following technical solutions:
a construction elevator safety intelligent control method, the method comprising:
dividing the guide rail frame into a plurality of areas according to the standard sections, and judging whether the suspension cage is jammed in each standard section when moving according to the operation state of the suspension cage along the guide rail frame, wherein the operation state comprises acceleration, operation time, height and the like of the suspension cage;
determining a jamming area;
when the suspension cage runs to a jamming area next time, automatically taking lubricating measures of different degrees according to different jamming conditions to reduce the resistance between the suspension cage and the guide rail frame;
and judging the resistance of the cage before and after the operation of the cage according to different automatic lubrication measures of different jamming conditions, and taking emergency measures for the cage.
Through adopting above-mentioned technical scheme, when the cage moves along the guide rail frame, acquire the running state when the cage moves along every standard festival in the guide rail frame, and then be the bite state with the great definition of resistance between the standard festival in the guide rail frame and the guide rail, when the cage is during the standard festival of bite state again, take the lubricated measure of degree according to the difference automation of the bite condition this moment, with the resistance between reduction cage and the standard festival, be favorable to improving the intelligent control to the lift. According to the difference of the resistance between the standard knot at different positions in the guide rail frame and the suspension cage, when the suspension cage moves to the blocking area again, different amounts of lubricating oil at the spraying position of the spraying opening can be controlled according to the resistance, so that the intelligent control on the elevator can be improved, and in a preferred example, the intelligent control on the elevator can be further configured as follows: whether the cage is jammed when moving in each standard section or not is judged according to the running state of the cage when running along the guide rail frame comprises: acquiring the total weight M1 of the cage and the height H of a moving floor, calculating a predicted acceleration a1, and calculating a theoretical resistance f1 according to the acceleration a 1;
acquiring an actual running acceleration a2 in the lifting process of the cage, and calculating an 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 to obtain a first calculated value, comparing the first calculated value with a preset first threshold value, and defining the space between the suspension cage and the guide rail frame as the jamming when the first calculated value is greater than the first threshold value.
By adopting the technical scheme, the total weight M1 of the cage and workers in the cage is automatically obtained through a computer, the expected acceleration a1 required when the cage moves along the guide rail frame and the driving force F output by the top motor and the side motor are calculated according to the height between the moving target floor and the starting floor, the theoretical resistance F1 is calculated according to the driving force F, the expected acceleration a1 and the total weight M1, the theoretical resistance F1 represents the resistance between the cage and the guide rail frame in a normal state, and the resistance in the normal state is unchanged in size in the moving process of the cage.
And 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 to further obtain a first calculated value, and comparing the first calculated value with a preset threshold value to judge whether the suspension cage and the guide rail frame are jammed or not.
The present invention in a preferred example may be further configured to: the determining the bite area includes: and respectively acquiring the actual resistance f2 of the cage when the cage runs on each standard knot, defining the standard knot with a first calculated value larger than a first threshold value when the cage runs along the standard knot as a jamming standard knot, and marking the jamming severity of a plurality of jamming standard knots according to the resistance of each jamming standard knot.
By adopting the technical scheme, the guide rail frame is divided into a plurality of areas according to the height of the standard knots, when the suspension cage moves along the guide rail frame, the friction force between each suspension cage and each standard knot in the guide rail frame is respectively obtained, so that the standard knots on the guide rail frame are respectively screened, the standard knot with larger resistance between the standard knots and the suspension cage is defined as the jamming standard knot, and the jamming areas are formed by the plurality of jamming standard knots. And the jamming severity degree of the jamming standard knot in the jamming area is marked according to the magnitude of the resistance in jamming, so that when the suspension cage moves to the jamming standard knot, the computer can acquire the jamming condition.
The present invention in a preferred example may be further configured to: when the cage moves to the jam region next time, according to the different automatic lubrication measure of taking the degree of the jam condition, reduce the resistance between cage and the guide rail frame and include:
a spraying port for spraying lubricating oil is formed in the suspension cage, and the spraying port faces to the space between the gear of the suspension cage and the rack of the guide rail frame;
and when the suspension cage moves to the jamming area again, adjusting the amount of the lubricating oil sprayed out of the spraying port according to the jamming severity corresponding to the jamming standard knot 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 erupt and be used for making the lubricated lubricating oil of gear and rack. In the process that the cage moves along the guide rail frame, when the cage moves to the jamming standard section in the jamming area, the computer controls the amount of lubricating oil at the spraying position of the spraying opening according to the latest jamming severity degree, namely the position with the more serious jamming, the more the lubricating oil is consumed, the more the lubricating oil needs to be sprayed, and therefore the elevator can control the amount of the lubricating oil according to the actual resistance between the cage and the standard section, and the lubricating oil is in a proper state.
The present invention in a preferred example may be further configured to: the judgment of the resistance of the cage during operation before and after the lubrication measures with different automatic taking degrees according to different jamming conditions comprises the following steps:
acquiring the acceleration a3 of the lubricated cage in the jamming area during operation, and calculating the lubricated resistance f3 according to the weight of the cage;
and calculating the lubricating resistance f3' of the constant-mass suspension cage by utilizing the proportional relation between the weight of the suspension cage at the time and the weight of the suspension cage at the last time.
By adopting the technical scheme, because the weight of the cage in each operation can not be the same, the total mass M2 of the next cage is obtained, the resistance f3 corresponding to the total mass M2 is firstly calculated, the multiple difference between the total weight M2 of the cage and the total weight M1 of the last cage is calculated by utilizing the direct proportional relation between the resistance and the weight of the cage, and the lubricating resistance f3' under the condition that the total weight M2 of the cage is the same as the total weight M1 of the cage at the time is calculated according to the multiple difference, so that the conditions of measurement at two sides are in the same state, and the error elimination is facilitated.
The present invention in a preferred example may be further configured to: the taking of emergency measures to the suspension cage comprises:
comparing the lubricating resistance f3' with the resistance f2, calculating the difference between the lubricating resistance f3' and the resistance f2, and obtaining the absolute difference between the lubricating resistance f3' and the resistance f2 to obtain a second calculated value;
comparing the second calculated value with a preset second threshold value, and judging whether the lubricating measure is effective or not;
and if the lubricating measure is invalid, taking emergency measure to the suspension cage.
By adopting the technical scheme, the lubricating resistance f3' is compared with the actual resistance f2, and a second calculated value is obtained by calculation according to the absolute value of the difference between the two calculated values, wherein the second calculated value indicates whether the resistance is reduced due to the lubricating measure when the cages with the same weight are lubricated and run at the same position. If the second calculated value is smaller than the second predetermined threshold value, which indicates that the effect of the lubrication measure is insignificant, the resistance between the standard knot and the suspension cage is other than the friction force, and the other resistance is the majority of the resistance, and there may be a mechanical failure.
The present invention in a preferred example may be further configured to: the emergency measures include:
the output power of a top motor to a steel cable is reduced, and the moving speed of the suspension cage is reduced;
acquiring the moving direction of the cage, and controlling a top motor and a side motor to drive the cage to move reversely so as to enable the cage to be separated from a jamming area; and returning the cage to the normal moving direction again and continuing to operate.
By adopting the technical scheme, after the lubricating measure is failed, only the lubricating effect is not obvious, and mechanical failure or accidental failure can exist. Therefore, the output force of the top motor and the side motor to the cage is firstly reduced, the pulling force of the steel cable to the cage is reduced, the cage runs at a relatively 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 the lifting cage is controlled to move reversely, so that the lifting cage is separated from the jamming standard knot at the jamming area, and the possibility of the lifting cage moving along the guide rail frame is improved. And finally, driving the cage to move in the preset direction again, enabling the cage to try again, and trying to overcome the resistance by using the impact force between the cage and the jamming standard knot, thereby eliminating the possibility of accidental faults.
The present invention in a preferred example may be further configured to: the emergency measures further include:
when the top motor repeatedly drives the cage to move reversely and cannot be separated from the jammed area, the top motor drives the cage to move to a nearby floor door to stop, and workers in the cage leave the cage.
By adopting the technical scheme, if after the attempt is made, when the resistance between the suspension cage and the standard knot still cannot be overcome, the resistance at the moment is defined as caused by mechanical failure, so that the suspension cage cannot normally continue to move. In order to ensure the personal safety of workers in the cage, the cage is moved to the door opening of the nearest floor, and the cage is stopped to operate so as to facilitate the workers to leave the cage quickly.
In a second aspect, the present application provides a construction elevator 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 of the suspension cage moving along the guide rail frame in real time;
the weight detection module is used for acquiring the total weight of the suspension cage, workers, tools and the like in the suspension cage;
the driving force calculation module is used for calculating the output forces of the top motor and the side motor acting on the suspension cage;
the calculation module is used for calculating the resistance between the suspension cage and the standard knot 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 knot according to the resistance and controlling the spray opening to spray lubricating oil;
and the lubricating oil spraying device responds to the control signal of the calculation module, so that the corresponding amount of lubricating oil at the position of the spraying position is sprayed according to the jamming severity between the suspension cage and the standard knot.
In summary, the present application includes at least one of the following beneficial technical effects:
1. according to the different resistances between the standard knots at different positions in the guide rail frame and the suspension cage, when the suspension cage moves into the jamming area again, the different amounts of lubricating oil at the spraying part of the spraying port can be controlled according to the resistance, so that the intelligent control of the elevator can be improved;
2. when the cage is jammed with the standard knot for the first time, the cage can be controlled to impact the jammed position again after one-time reverse movement, accidental faults are eliminated, and the intelligence of the cage during operation is improved.
Drawings
FIG. 1 is a flow chart of a construction elevator safety intelligent control method of the present application;
FIG. 2 is a flowchart of the method of determining whether the cage is jammed during movement within each standard section according to the operating conditions of the cage along the rail frame;
FIG. 3 is a flow chart of a method of the present application for determining the magnitude of resistance to a cage during operation before and after lubrication measures are automatically taken to a degree based on a difference in jam conditions to take emergency measures with respect to the cage.
Detailed Description
The present invention is described in further detail below with reference to figures 1-3.
The embodiment of the invention provides a construction elevator safety intelligent control method, and with reference to fig. 1 and 2, the method mainly comprises the following steps:
and S10, dividing the guide rail frame into a plurality of areas according to the standard sections, and judging whether the suspension cage is jammed in each standard section when moving in the operation state of the suspension cage along the guide rail frame, wherein the operation state comprises acceleration, operation time, height and the like of the suspension cage.
The guide rail frame is formed by vertically and sequentially butting a plurality of standard sections, each standard section is provided with a rack, and each adjacent section of rack is sequentially butted to form a track for the suspension cage to move. The side of the cage is rotatably provided with a gear which is driven by a side motor. The guide rail frame is divided into a plurality of areas according to the height of the standard knot, and then when the suspension cage moves up and down along the guide rail frame, the suspension cage sequentially passes through each area, the running state of the suspension cage in each area is obtained, and whether the gear and the rack are clamped in the area is judged according to the running state of the suspension cage.
S11, acquiring the total weight M11 of the cage, moving the height H of a floor, calculating an estimated acceleration a1, and calculating theoretical resistance f1 according to the acceleration a1.
When the safety of the elevator is tested, the cage is stopped at the floor door of any floor, and the cage is opened so that workers can enter the cage to set a moving target floor for the cage. The height difference between the starting floor and the target floor is height H, the height H is at least larger than the heights of the two standard knots, and the height of each standard knot is height H. The total weight M1, the estimated running time t1 and the acceleration a1 of the cage and workers in the cage are obtained through sensors set in the cage. And calculating theoretical resistance f1 of the cage along each standard section according to the total weight M1 and the height h.
The calculation method of the acceleration a1 comprises the following steps:
f is the pulling force of the steel cable pulled by the top motor to the cage and the output force of the side motor, and g is the gravity acceleration of the position of the elevator. When the cage is in the speed change state, the absolute value of a1 is larger than 0. When the suspension 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,
f1＝F-(a1M1+M1g)；
when the cage is in the variable speed state, the theoretical resistance F1= F- (a 1M1+ M1 g). When the suspension cage is in a constant speed state, the theoretical resistance F1= F-M1g.
Under the normal state, the theoretical resistance f1 when the hanging basket moves along each standard knot is equal in size.
S12, acquiring the actual running time t2 and the acceleration a2 when the cage passes through the height of each standard section in the lifting process, and calculating the actual resistance f2 according to the acceleration a 2.
The calculation formula of the actual resistance f2 is:
f2＝F-(a2M1+M1g)；
when the cage is in the variable speed state, the actual resistance F2= F- (a 2M1+ M1 g). When the suspension cage is in a constant speed state, the actual resistance F2= F-M1g.
S13, calculating an absolute value of a difference between the actual resistance f2 and the theoretical resistance f1 to obtain a first calculated value related to a 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 normal state between the suspension cage and the guide rail bracket is indicated, and lubrication is not needed. If the first calculated value is larger than the first threshold value, the state between the suspension cage and the guide rail frame is in a blocking state, and the suspension cage needs to be lubricated when running to the position.
Referring to fig. 1, S20, a bite area is determined.
The jamming area consists of one or more standard knots which are in a jamming state with the suspension cage. Specifically, the guide rail frame is composed of a plurality of standard sections. When the suspension cage moves along the guide rail frame, the actual resistance f2 between the suspension cage and each section of standard section is respectively obtained, the actual resistance f2 and the theoretical resistance f1 corresponding to each section of standard section are calculated, and first calculated values corresponding to each section of standard section are respectively obtained. In the moving process of the cage, each standard knot corresponds to a first calculated value.
And the magnitude relation of the first calculated value calculated according to each standard knot represents the magnitude of the resistance between the standard knot and the suspension cage at the corresponding position. The larger the first calculated value, the greater the resistance to movement of the cage to this standard knot.
And screening out standard knots of which the first calculated value is greater 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 consists of one or more jamming standard knots.
The jamming standard knots are arranged according to the size of the first calculated value corresponding to the jamming standard in the jamming area, the larger the numerical value of the first calculated value is, the larger the resistance between the standard knot and the suspension cage at the position is, and the higher the jamming severity is. Therefore, the bite standard nodes in the bite area are marked according to the size of the first calculated value. The larger the value of the first calculated value, the higher the grade of the severity of the seizure.
Referring to fig. 1, S30, when the suspension cage runs to the jamming area next time, lubricating measures of different degrees are automatically taken according to different jamming conditions, and resistance between the suspension cage and the guide rail frame is reduced.
When the suspension cage passes through the jamming area, the spraying port is controlled to spray lubricating oil to reduce friction. Specifically, a spraying port capable of spraying lubricating oil is arranged on the suspension cage in advance, and the spraying port faces to the meshing position of the gear and the rack. When the cage passes through the jamming area, lubricating oil is sprayed towards the meshing part of the gear and the rack through the spraying port so as to reduce the resistance between the gear and the rack. And the higher the grade of the severity of the jamming is, the more the lubricating oil sprayed from the spray opening is, so that the jamming part is fully lubricated.
Referring to fig. 1 and 3, S40, judging the resistance of the cage before and after the lubricating measure with different automatic degrees according to different jamming conditions, and taking emergency measures for the cage.
S41, acquiring the acceleration a3 of the lubricated cage in the jamming area, and calculating the lubricated resistance f3 according to the weight of the cage.
And acquiring the acceleration a3 when the cage passes through the standard time section where the lubricating measure is taken again, the output force F of the top motor and the side motor, and the total weight M2 of the cage, workers in the cage and the like. And calculating the resistance f3 between the lubricated standard knot and the suspension cage, wherein the resistance f3 is as follows:
f3＝F-(a3M2+M2g)；
and S42, comparing whether the total weight M2 and the total weight M1 are changed or not, and if the total weight M2= the total weight M1, defining the resistance f3 as the lubricating resistance f3'.
If the total weight M2 is not equal to the total weight M1, calculating a multiple k according to the proportional relation between the total weight M2 and the total weight M1, wherein most of the resistance f3 is friction force under a normal state, so that the resistance f3 is equivalent to the friction force. 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 resistance f3 at this time.
S43, comparing the lubricating resistance f3' with the resistance f2, judging whether the lubricating measures are effective or not, and taking emergency measures for the suspension cage when the lubricating measures are ineffective.
Specifically, the numerical values of the lubricating 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 a second calculated value. And then comparing the second calculated value with a preset second threshold value to judge whether the lubricating measure is effective or not. And if the second calculated value is smaller than the second threshold value, the lubricating measure is effective, and the resistance between the suspension cage and the jamming standard knot in the jamming area can be reduced.
If the second calculated value is larger than the second threshold value, the lubrication measure is invalid, and at this time, the resistance f3' may be a resistance which is not reduced by abutting against the lubricating oil and is dominated by mechanical factors such as rack dislocation, rack bending or rack tooth breakage caused by standard pitch inclination.
And S44, taking emergency measures for the suspension cage. The emergency measures include reducing the output power of the top motor and the side motors, and reducing the speed of the cage to allow the cage to operate at a steady speed, thereby reducing the pull on the wire rope when the cage is jammed.
And controlling the top motor and the side motor to rotate reversely, so that the cage temporarily leaves the jamming area according to the original path. And after the cage leaves the jamming area, the cage moves again according to a set route, and the resistance of the jamming area to the cage is tried to be overcome by impact.
If the suspension cage still cannot move continuously after a reverse attempt, the state between the suspension cage and the guide rail frame at the moment is defined as a fault state. Stopping the impact of the suspension cage on the guide rail bracket. And controlling a top motor and a side motor to return the cage to the original way, stopping at the nearest floor door, and opening a gate of the cage so as to enable workers in the cage to escape from the cage. Meanwhile, the suspension cage stops running continuously and gives out a fault alarm to remind maintainers that the suspension cage cannot be normally used due to mechanical failure.
Example 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 of the suspension cage moving along the guide rail frame in real time;
the weight detection module is used for acquiring the total weight of the suspension cage, workers, tools and the like in the suspension cage;
the driving force calculation module is used for calculating the output forces of the top motor and the side motor acting on the suspension cage;
the calculation module is used for calculating the resistance between the suspension cage and the standard knot 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 knot according to the resistance and controlling the spray opening to spray lubricating oil;
and the lubricating oil spraying device responds to the control signal of the calculation module, so that the corresponding amount of lubricating oil at the position of the spraying position is sprayed according to the jamming severity between the suspension cage and the standard knot.
The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications of the present embodiment without inventive contribution as needed after reading the present specification, but all of them are protected by patent law within the scope of the claims of the present invention.
Claims (9)
1. A construction elevator safety intelligent control method is characterized by comprising the following steps:
dividing the guide rail frame into a plurality of areas according to the standard sections, and judging whether the suspension cage is jammed in each standard section when moving in the standard section according to the running state of the suspension cage along the guide rail frame, wherein the running state comprises the acceleration, the running time, the height and the like of the suspension cage;
determining a jamming area;
when the suspension cage runs to a jamming area next time, automatically taking lubricating measures of different degrees according to different jamming conditions, and reducing the resistance between the suspension cage and the guide rail frame;
and judging the resistance of the cage before and after the operation of the cage according to different automatic lubrication measures of different jamming conditions, and taking emergency measures for the cage.
2. The safety intelligent control method of the construction hoist according to claim 1, wherein the judging whether the cage is jammed while moving within each standard knot according to the operation state of the cage while moving along the guide rail frame comprises:
acquiring the total weight M1 of the cage and the height H of a moving floor, calculating a predicted acceleration a1, and calculating a theoretical resistance f1 according to the acceleration a 1;
acquiring an actual running acceleration a2 in the lifting process of the cage, and calculating an 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 to obtain a first calculated value, comparing the first calculated value with a preset first threshold value, and defining the space between the suspension cage and the guide rail frame as the jamming when the first calculated value is greater than the first threshold value.
3. The safety intelligent control method of a construction elevator according to claim 1, wherein the determining of the stuck area includes:
and respectively acquiring the actual resistance f2 of the cage when the cage runs on each standard knot, defining the standard knot with a first calculated value larger than a first threshold value when the cage runs along the standard knot as a jamming standard knot, and marking the jamming severity of a plurality of jamming standard knots according to the resistance of each jamming standard knot.
4. The safety intelligent control method of the construction hoist according to claim 1, wherein when the cage is moved to the jammed area next time, automatically taking a degree of lubrication measures according to a difference in the jam condition, and reducing the resistance between the cage and the guide rail frame comprises:
a spraying port for spraying lubricating oil is formed in the suspension cage, and the spraying port faces to the space between the gear of the suspension cage and the rack of the guide rail frame;
and when the suspension cage moves to the jamming area again, adjusting the amount of the lubricating oil sprayed out of the spraying port according to the jamming severity corresponding to the jamming standard knot in the jamming area.
5. The safety intelligent control method of a construction elevator according to claim 1, wherein the judging of the magnitude of the resistance of the cage in operation before and after the lubrication measures of the degree to be automatically taken according to the difference in the jamming condition comprises:
acquiring the acceleration a3 of the lubricated cage in the jamming area during operation, and calculating the lubricated resistance f3 according to the weight of the cage;
and calculating the lubricating resistance f3' of the constant-mass suspension cage by utilizing the proportional relation between the weight of the suspension cage at the time and the weight of the suspension cage at the last time.
6. The safety intelligent control method of a construction elevator according to claim 5, wherein the taking of emergency measures for the cage includes:
comparing the lubricating resistance f3' with the resistance f2, calculating the difference between the lubricating resistance f3' and the resistance f2, and obtaining the absolute difference between the lubricating resistance f3' and the resistance f2 to obtain a second calculated value;
comparing the second calculated value with a preset second threshold value, and judging whether the lubricating measure is effective or not;
and if the lubricating measure is invalid, taking emergency measure to the suspension cage.
7. The construction elevator safety intelligent control method according to claim 6, wherein the emergency measure includes:
the output power of a top motor to a steel cable is reduced, and the moving speed of the suspension cage is reduced;
acquiring the moving direction of the cage, and controlling a top motor and a side motor to drive the cage to move reversely so as to enable the cage to be separated from a jamming area;
and returning the cage to the normal moving direction again and continuing to operate.
8. The safety intelligent control method of a construction elevator according to claim 7, wherein the emergency measure further comprises:
when the top motor repeatedly drives the cage to move reversely and cannot be separated from the jammed area, the top motor drives the cage to move to a nearby floor door to stop, and workers in the cage leave the 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 of the suspension cage moving along the guide rail frame in real time;
the weight detection module is used for acquiring the total weight of the suspension cage, workers, tools and the like in the suspension cage;
the driving force calculation module is used for calculating the output forces of the top motor and the side motor acting on the suspension cage;
the calculation module is used for calculating the resistance between the suspension cage and the standard knot 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 knot according to the resistance and controlling the spray opening to spray lubricating oil;
and the lubricating oil spraying device responds to the control signal of the calculation module, so that the corresponding amount of lubricating oil at the position of the spraying position is sprayed according to the jamming severity between the suspension cage and the standard knot.
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| CN117602515B (en) * | 2023-11-29 | 2024-05-10 | 安徽建工集团建筑机械智能制造有限公司 | Control method and system for construction elevator |
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| CN115557357B (en) | 2023-06-20 |
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