CN117602515B - Control method and system for construction elevator - Google Patents
Control method and system for construction elevator Download PDFInfo
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- CN117602515B CN117602515B CN202311607698.9A CN202311607698A CN117602515B CN 117602515 B CN117602515 B CN 117602515B CN 202311607698 A CN202311607698 A CN 202311607698A CN 117602515 B CN117602515 B CN 117602515B
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- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000010276 construction Methods 0.000 title claims abstract description 23
- 238000004458 analytical method Methods 0.000 claims abstract description 40
- 238000005299 abrasion Methods 0.000 claims description 51
- 230000005540 biological transmission Effects 0.000 claims description 38
- 238000004364 calculation method Methods 0.000 claims description 18
- 230000002159 abnormal effect Effects 0.000 claims description 12
- 230000007613 environmental effect Effects 0.000 claims description 7
- 238000001514 detection method Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 238000007726 management method Methods 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010223 real-time analysis Methods 0.000 description 1
Classifications
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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
- B66C15/00—Safety gear
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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
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
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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
- B66C15/00—Safety gear
- B66C15/06—Arrangements or use of warning devices
- B66C15/065—Arrangements or use of warning devices electrical
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
Abstract
The invention discloses a control method and a system for a construction elevator, which relate to the technical field of detection control, and comprise the steps of comprehensive information acquisition, comprehensive information analysis, elevator starting control, device information acquisition, device information analysis and early warning display.
Description
Technical Field
The invention relates to the technical field of detection control, in particular to a control method and a control system for a construction lifter.
Background
With the advent of the big data age, various signage buildings are being built around the world. The equipment necessary for the operation of the elevator during construction is important for the safety of the elevator during operation, wherein the operation of the elevator during snowy weather increases a lot of difficulties, so that the analysis of the elevator during snowy weather is necessary.
The current analysis of elevators is performed only in normal weather and no real-time analysis of the elevator equipment is performed, it is apparent that this analysis has several problems:
1. The current analysis of the elevators mainly comprises the step of analyzing whether basic equipment of the elevators in daily weather can be started or not, and the comprehensive information of the elevators in snowy weather is not analyzed, so that the material information and the environment information of the elevators are analyzed, the actual condition of the starting of the elevators in the current snowy weather cannot be known more accurately, the comprehensiveness and the authenticity of a feasibility analysis process of the control starting of the elevators cannot be guaranteed, the referential property and the accuracy of analysis results cannot be guaranteed, and reliable basis cannot be provided for updating and upgrading of a control method of the elevators.
2. The device information of the elevator is not analyzed through the information of the gears and the racks at present, the abrasion degree and the coincidence degree of each section of the racks and the gears and the angular speed rotation ratio are not calculated, the device condition of the elevator during operation cannot be truly displayed, the device for timely maintaining the elevator cannot be guaranteed, the operation safety of the elevator cannot be guaranteed, the operation efficiency of the elevator cannot be improved, and the operation effect of the elevator during construction is reduced to a certain extent.
Disclosure of Invention
In view of the above-mentioned technical shortcomings, the present invention aims to provide a control method and system for a construction elevator.
In order to solve the technical problems, the invention adopts the following technical scheme: the present invention provides in a first aspect a control method for a construction hoist, the method comprising the steps of: step one, comprehensive information acquisition: when the elevator needs to work in rainy and snowy weather, acquiring comprehensive information of the elevator in the current rainy and snowy weather, wherein the comprehensive information comprises material information and environment information of the elevator;
Step two, comprehensive information analysis: according to comprehensive information of the lifter in the current rainy and snowy weather, material information and environment information of the lifter in the current rainy and snowy weather are respectively analyzed, and whether the lifter can be started in the current rainy and snowy weather is further judged;
step three, elevator starting control: when judging that the elevator can be started in the current rainy and snowy weather, controlling the elevator to start to work;
Step four, obtaining device information: acquiring device information of the lifter during wind, snow and weather operation, wherein the device information comprises the rotation angle and rotation speed of the gear, the initial thickness and the existing thickness of each section of the gear, and the initial thickness and the existing thickness of each section of the rack;
fifthly, analyzing device information: according to the device information of the elevator during the running of the wind, snow and air, analyzing and obtaining the coincidence degree of each section of gear and rack of the elevator, further judging the device condition of the elevator, and analyzing and obtaining the angular speed transmission ratio of the elevator, thereby judging the speed change trend of the elevator;
Step six, early warning display: when the elevator is judged to be impossible to start, or the speed change trend of the elevator is abnormal increase or decrease, or the device condition of the elevator is poor, early warning display is carried out.
Preferably, the comprehensive information of the lifter in the current rainy and snowy weather is obtained, each acquisition point is arranged in the lifter according to a set interval, an infrared sensor, a weight sensor and a pressure sensor are arranged at each acquisition point, so that material information of the lifter is obtained, the material information comprises the weight, the stacking inclination angle and the pressure of the material, a snowfall sensor, a rainfall sensor and a wind speed sensor are arranged outside the lifter, so that environment information of the lifter is obtained, and the environment information comprises the snowfall, the rainfall and the top wind speed.
Preferably, the material information of the elevator in the current rainy and snowy weather is analyzed, and the specific analysis process is as follows: a1, comparing the weight of materials in the elevator with the rated weight of the elevator set in an elevator safety manual; when the weight of the materials in the elevator is greater than the rated weight of the elevator set in the elevator safety manual, the weight data of the materials is recorded as 0; when the weight of the materials in the elevator is less than the rated weight of the elevator set in the elevator safety manual, the weight data of the materials is recorded as 1;
A2, comparing the stacking inclination angle of the materials in the lifter with the stacking inclination angle of rated materials of the lifter, which is set in a lifter safety manual; when the stacking inclination angle of the materials in the elevator exceeds the stacking inclination angle of the rated materials of the elevator set in the elevator safety manual, recording the stacking inclination angle data of the materials as 0; when the stacking inclination angle of the materials in the elevator does not exceed the stacking inclination angle of the rated materials of the elevator set in the elevator safety manual, recording the stacking inclination angle data of the materials as 1;
A3, respectively subtracting the pressures of all the collecting points at the bottom of the lifter into two pairs, recording the pressure differences, respectively comparing the pressure differences with a set pressure difference threshold value, judging that the pressure of the material in the current lifter to the bottom of the lifter is uneven when a certain pressure difference is larger than the set pressure difference threshold value, and recording the pressure data of the material as 0; otherwise, the pressure data of the material is recorded as 1.
Preferably, the analysis is performed on the environmental data of the elevator in the current rainy and snowy weather, and the specific analysis process is as follows: b1, when the snowfall outside the elevator exceeds the rated snowfall set in the elevator safety manual, recording the snowfall data outside the elevator as 0; when the snowfall outside the elevator does not exceed the rated snowfall set in the elevator safety manual, recording the snowfall outside the elevator as 1;
B2, when the snowfall outside the lifter exceeds the rated rainfall set in the lifter safety manual, recording the rainfall data outside the lifter as 0; when the rainfall outside the elevator does not exceed the rated rainfall set in the elevator safety manual, recording the rainfall data outside the elevator as 1;
B3, when the top wind speed of the elevator exceeds the rated top wind speed set in the elevator safety manual, recording the top wind speed data of the elevator as 0; when the top wind speed of the elevator does not exceed the rated top wind speed set in the elevator safety manual, the top wind speed data of the elevator is recorded as 1.
Preferably, the specific judging process is as follows: when the weight data, the stacking inclination angle data and the pressure data of the materials inside the lifter, the snowfall data, the rainfall data and the top wind speed data outside the lifter are all 1, the lifter is judged to be started in the current rainy and snowy weather, otherwise, the lifter is judged to be not started in the current rainy and snowy weather.
Preferably, the analyzing the coincidence degree of each section of gear and rack of the lifter comprises the following specific analyzing process: c1, according to the calculation formulaObtaining the abrasion degree of the gear of the ith elevator, and then according to a calculation formulaObtaining the abrasion degree of racks of the ith elevator, wherein i is represented by numbers corresponding to racks and gears of each section, i=1, 2.
C2, according to the calculation formulaAnd obtaining the coincidence degree of the gear and the rack of the ith elevator, wherein the coincidence degree of the delta gear and the rack is the coincidence degree of the set gear and the rack which are allowed to float.
Preferably, the specific judging process is as follows: d1, respectively comparing the abrasion degree of each section gear of the elevator with a preset abrasion degree threshold value of the gears, judging that the abrasion degree of a section gear of the elevator is too high and the device condition of the elevator is poor when the abrasion degree of the section gear of the elevator is larger than the preset abrasion degree threshold value of the gears, and otherwise, judging that the abrasion degree of the section gear is normal, thereby judging the abrasion degree condition of each section gear of the elevator;
d2, respectively comparing the abrasion degree of each section of rack of the elevator with a preset abrasion degree threshold value of the rack, judging that the abrasion degree of a section of rack of the elevator is too high and the device condition of the elevator is poor when the abrasion degree of the section of rack of the elevator is larger than the preset abrasion degree threshold value of the rack, and otherwise, judging that the abrasion degree of the section of rack is normal, thereby judging the abrasion degree condition of each section of rack of the elevator;
and D3, comparing the fitness of each section of gear and each rack of the elevator with a preset threshold value of the fitness of the gear and the rack respectively, and judging that the fitness of each section of gear and each rack of the elevator is too low when the fitness of a certain section of gear and each rack of the elevator is smaller than the preset threshold value of the fitness of each section of gear and each rack of the elevator, and judging that the fitness of each section of gear and each rack of the elevator is normal when the device condition of the elevator is poor, so as to judge the fitness of each section of gear and each rack of the elevator.
Preferably, the analysis results in an angular speed transmission ratio of the elevator, and the specific analysis process is as follows: according to the calculation formulaObtaining the input angular velocity of the lifter, and then according to a calculation formulaDeriving the output angular velocity of the elevator, and substituting the input angular velocity and the output angular velocity of the elevator into the calculation formula/>The angular speed transmission ratio of the elevator is obtained.
Preferably, the determining the speed change trend of the elevator specifically includes the following steps: when the angular speed transmission ratio of the lifter is larger than 1 but smaller than the upper limit value of the rated angular speed transmission ratio of the lifter, judging that the speed change trend of the lifter is steadily increased; when the angular speed transmission ratio of the lifter is smaller than 1 but larger than the lower limit value of the rated angular speed transmission ratio of the lifter, judging that the speed change trend of the lifter is steadily reduced; when the angular speed transmission ratio of the lifter is 1, judging that the speed change trend of the lifter is stable and unchanged; when the angular speed transmission ratio of the lifter is greater than or equal to the upper limit value of the rated angular speed transmission ratio of the lifter, judging that the speed change trend of the lifter is abnormal increase; when the angular velocity transmission ratio of the elevator is less than or equal to the lower limit value of the rated angular velocity transmission ratio of the elevator, the velocity change trend of the elevator is judged to be abnormal reduction.
The present invention provides in a second aspect a control system for a construction hoist, the system comprising a comprehensive information acquisition module for acquiring comprehensive information of the hoist in current weather when the hoist is required to operate in the weather;
the comprehensive information analysis module is used for respectively analyzing the material information and the environment information of the elevator in the current rainy and snowy weather according to the comprehensive information of the elevator in the current rainy and snowy weather, so as to judge whether the elevator can be started in the current rainy and snowy weather;
The elevator starting control module is used for controlling the elevator to start to work when judging that the elevator can be started in the current rainy and snowy weather;
the device information acquisition module is used for acquiring device information of the lifter during wind, snow and weather operation, wherein the device information comprises the rotation angle and rotation speed of the gear, the initial thickness and the existing thickness of each section of the gear, and the initial thickness and the existing thickness of each section of the rack;
The device information analysis module is used for analyzing and obtaining the coincidence degree of each section of gear and rack of the lifter according to the device information of the lifter when the lifter runs in the windy and snowy weather, further judging the device condition of the lifter, and analyzing and obtaining the angular speed transmission ratio of the lifter, thereby judging the speed change trend of the lifter;
and the early warning terminal is used for carrying out early warning prompt when the elevator is judged to be unable to start, or the speed change trend of the elevator is abnormal increase or decrease, or the device condition of the elevator is poor.
The invention has the beneficial effects that:
1. According to the control method and system for the construction elevator, the comprehensive information of the elevator in the weather of wind and snow is analyzed, the starting feasibility of the elevator in the weather of wind and snow is further analyzed, the problem of limitation in the development feasibility analysis process of the current elevator in the starting control operation of the weather of wind and snow is solved, the device information of the elevator is analyzed, the information of the gear and the rack of the elevator is further analyzed, the feasibility, the comprehensiveness and the objectivity of the elevator device are analyzed, the reliability and the authenticity of analysis results are calculated according to each section, and then a reliable basis is provided for the follow-up targeted management and the balanced development of the elevator control.
2. According to the invention, the comprehensive information of the elevator in the weather of wind and snow is analyzed, and then the material information and the environmental information of the elevator are analyzed, so that the actual condition of elevator starting in the current weather of wind and snow is more accurately known, meanwhile, the comprehensiveness and the authenticity of the feasibility analysis process of elevator control starting are ensured, the referential property and the accuracy of analysis results are further ensured, and reliable basis is provided for updating and upgrading of the control method of the elevator.
4. According to the invention, the device information of the elevator is analyzed through the information of the gears and the racks, the abrasion degree and the coincidence degree of each section of racks and the gears and the angular speed rotation ratio are calculated, so that the device condition of the elevator during operation is truly shown, the device capable of maintaining the elevator in time is further ensured, the operation safety of the elevator is also ensured, the operation efficiency of the elevator is improved, and the operation effect of the elevator during construction is increased to a certain extent.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flow chart of the steps of the method of the invention.
FIG. 2 is a schematic diagram of the system structure of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the present invention provides a control method for a construction lifter in a first aspect, including the steps of: when the elevator needs to work in rainy and snowy weather, acquiring comprehensive information of the elevator in the current rainy and snowy weather, wherein the comprehensive information comprises material information and environment information of the elevator;
In a specific example, the comprehensive information of the elevator in the current rainy and snowy weather is obtained, each acquisition point is arranged in the elevator according to a set interval, an infrared sensor, a weight sensor and a pressure sensor are installed at each acquisition point, so that the material information of the elevator is obtained, the material information comprises the weight, the stacking inclination angle and the pressure of the material, a snowfall sensor, a rainfall sensor and a wind speed sensor are installed outside the elevator, so that the environment information of the elevator is obtained, and the environment information comprises the snowfall, the rainfall and the top wind speed.
The weight sensor and the pressure sensor are installed at each collecting point at the bottom of the elevator.
According to the invention, the comprehensive information of the elevator in the weather of wind and snow is analyzed, and then the material information and the environmental information of the elevator are analyzed, so that the actual condition of elevator starting in the current weather of wind and snow is more accurately known, meanwhile, the comprehensiveness and the authenticity of the feasibility analysis process of elevator control starting are ensured, the referential property and the accuracy of analysis results are further ensured, and reliable basis is provided for updating and upgrading of the control method of the elevator.
Step two, comprehensive information analysis: according to comprehensive information of the lifter in the current rainy and snowy weather, material information and environment information of the lifter in the current rainy and snowy weather are respectively analyzed, and whether the lifter can be started in the current rainy and snowy weather is further judged;
in a specific example, the material information of the elevator in the current rainy and snowy weather is analyzed, and the specific analysis process is as follows: a1, comparing the weight of materials in the elevator with the rated weight of the elevator set in an elevator safety manual; when the weight of the materials in the elevator is greater than the rated weight of the elevator set in the elevator safety manual, the weight data of the materials is recorded as 0; when the weight of the materials in the elevator is less than the rated weight of the elevator set in the elevator safety manual, the weight data of the materials is recorded as 1;
A2, comparing the stacking inclination angle of the materials in the lifter with the stacking inclination angle of rated materials of the lifter, which is set in a lifter safety manual; when the stacking inclination angle of the materials in the elevator exceeds the stacking inclination angle of the rated materials of the elevator set in the elevator safety manual, recording the stacking inclination angle data of the materials as 0; when the stacking inclination angle of the materials in the elevator does not exceed the stacking inclination angle of the rated materials of the elevator set in the elevator safety manual, recording the stacking inclination angle data of the materials as 1;
A3, respectively subtracting the pressures of all the collecting points at the bottom of the lifter into two pairs, recording the pressure differences, respectively comparing the pressure differences with a set pressure difference threshold value, judging that the pressure of the material in the current lifter to the bottom of the lifter is uneven when a certain pressure difference is larger than the set pressure difference threshold value, and recording the pressure data of the material as 0; otherwise, the pressure data of the material is recorded as 1.
When the weight in the elevator exceeds the rated weight in the safety manual, the stacking of materials is unstable and the pressure distribution is uneven, and the elevator cannot perform safe operation.
In another specific embodiment, the analysis is performed on the environmental data of the elevator in the current rainy and snowy weather, and the specific analysis process is as follows: b1, when the snowfall outside the elevator exceeds the rated snowfall set in the elevator safety manual, recording the snowfall data outside the elevator as 0; when the snowfall outside the elevator does not exceed the rated snowfall set in the elevator safety manual, recording the snowfall outside the elevator as 1;
B2, when the snowfall outside the lifter exceeds the rated rainfall set in the lifter safety manual, recording the rainfall data outside the lifter as 0; when the rainfall outside the elevator does not exceed the rated rainfall set in the elevator safety manual, recording the rainfall data outside the elevator as 1;
B3, when the top wind speed of the elevator exceeds the rated top wind speed set in the elevator safety manual, recording the top wind speed data of the elevator as 0; when the top wind speed of the elevator does not exceed the rated top wind speed set in the elevator safety manual, the top wind speed data of the elevator is recorded as 1.
When the snowfall exceeds the rated snowfall in the elevator safety manual, the rainfall exceeds the rated rainfall in the elevator safety manual, and the top wind speed exceeds the rated wind speed in the elevator safety manual, the elevator cannot perform safe operation;
In still another specific embodiment, the specific judging process is as follows: when the weight data, the stacking inclination angle data and the pressure data of the materials inside the lifter, the snowfall data, the rainfall data and the top wind speed data outside the lifter are all 1, the lifter is judged to be started in the current rainy and snowy weather, otherwise, the lifter is judged to be not started in the current rainy and snowy weather.
It should be noted that, when it is determined that the elevator cannot be started in the current rainy or snowy weather, the forced elevator cannot be started.
Step three, elevator starting control: when judging that the elevator can be started in the current rainy and snowy weather, controlling the elevator to start to work;
Step four, obtaining device information: acquiring device information of the lifter during wind, snow and weather operation, wherein the device information comprises the rotation angle and rotation speed of the gear, the initial thickness and the existing thickness of each section of the gear, and the initial thickness and the existing thickness of each section of the rack;
The encoder and the laser sensor are mounted on a shaft connected to the gear, and device information of the elevator during the snowy and snowy operation is acquired.
According to the invention, the device information of the elevator is analyzed through the information of the gears and the racks, the abrasion degree and the coincidence degree of each section of racks and the gears and the angular speed rotation ratio are calculated, so that the device condition of the elevator during operation is truly shown, the device capable of maintaining the elevator in time is further ensured, the operation safety of the elevator is also ensured, the operation efficiency of the elevator is improved, and the operation effect of the elevator during construction is increased to a certain extent.
Fifthly, analyzing device information: according to the device information of the elevator during the running of the wind, snow and air, analyzing and obtaining the coincidence degree of each section of gear and rack of the elevator, further judging the device condition of the elevator, and analyzing and obtaining the angular speed transmission ratio of the elevator, thereby judging the speed change trend of the elevator;
in a specific example, the analyzing the coincidence degree of each section of gear and rack of the lifter comprises the following steps: c1, according to the calculation formula Obtaining the abrasion degree of the gear of the ith elevator, and then according to a calculation formulaObtaining the abrasion degree of racks of the ith elevator, wherein i is represented by numbers corresponding to racks and gears of each section, i=1, 2.
C2, according to the calculation formulaAnd obtaining the coincidence degree of the gear and the rack of the ith elevator, wherein the coincidence degree of the delta gear and the rack is the coincidence degree of the set gear and the rack which are allowed to float.
In another specific embodiment, the determining the device status of the elevator specifically includes the following steps: d1, respectively comparing the abrasion degree of each section gear of the elevator with a preset abrasion degree threshold value of the gears, judging that the abrasion degree of a section gear of the elevator is too high and the device condition of the elevator is poor when the abrasion degree of the section gear of the elevator is larger than the preset abrasion degree threshold value of the gears, and otherwise, judging that the abrasion degree of the section gear is normal, thereby judging the abrasion degree condition of each section gear of the elevator;
d2, respectively comparing the abrasion degree of each section of rack of the elevator with a preset abrasion degree threshold value of the rack, judging that the abrasion degree of a section of rack of the elevator is too high and the device condition of the elevator is poor when the abrasion degree of the section of rack of the elevator is larger than the preset abrasion degree threshold value of the rack, and otherwise, judging that the abrasion degree of the section of rack is normal, thereby judging the abrasion degree condition of each section of rack of the elevator;
and D3, comparing the fitness of each section of gear and each rack of the elevator with a preset threshold value of the fitness of the gear and the rack respectively, and judging that the fitness of each section of gear and each rack of the elevator is too low when the fitness of a certain section of gear and each rack of the elevator is smaller than the preset threshold value of the fitness of each section of gear and each rack of the elevator, and judging that the fitness of each section of gear and each rack of the elevator is normal when the device condition of the elevator is poor, so as to judge the fitness of each section of gear and each rack of the elevator.
In yet another specific embodiment, the analysis results in an angular speed gear ratio of the elevator, and the specific analysis is as follows: according to the calculation formulaObtaining the input angular velocity of the lifter, and then according to the calculation formula/>Deriving the output angular velocity of the elevator, and substituting the input angular velocity and the output angular velocity of the elevator into the calculation formula/>The angular speed transmission ratio of the elevator is obtained.
In still another specific embodiment, the determining the speed change trend of the elevator specifically includes the following steps: when the angular speed transmission ratio of the lifter is larger than 1 but smaller than the upper limit value of the rated angular speed transmission ratio of the lifter, judging that the speed change trend of the lifter is steadily increased; when the angular speed transmission ratio of the lifter is smaller than 1 but larger than the lower limit value of the rated angular speed transmission ratio of the lifter, judging that the speed change trend of the lifter is steadily reduced; when the angular speed transmission ratio of the lifter is 1, judging that the speed change trend of the lifter is stable and unchanged; when the angular speed transmission ratio of the lifter is greater than or equal to the upper limit value of the rated angular speed transmission ratio of the lifter, judging that the speed change trend of the lifter is abnormal increase; when the angular velocity transmission ratio of the elevator is less than or equal to the lower limit value of the rated angular velocity transmission ratio of the elevator, the velocity change trend of the elevator is judged to be abnormal reduction.
Step six, early warning display: when the elevator is judged to be impossible to start, or the speed change trend of the elevator is abnormal increase or decrease, or the device condition of the elevator is poor, early warning display is carried out.
In a second aspect, the present invention provides a control system for a construction elevator, including a comprehensive information acquisition module for acquiring comprehensive information of the elevator in current weather when the elevator needs to operate in the weather;
the comprehensive information analysis module is used for respectively analyzing the material information and the environment information of the elevator in the current rainy and snowy weather according to the comprehensive information of the elevator in the current rainy and snowy weather, so as to judge whether the elevator can be started in the current rainy and snowy weather;
The elevator starting control module is used for controlling the elevator to start to work when judging that the elevator can be started in the current rainy and snowy weather;
the device information acquisition module is used for acquiring device information of the lifter during wind, snow and weather operation, wherein the device information comprises the rotation angle and rotation speed of the gear, the initial thickness and the existing thickness of each section of the gear, and the initial thickness and the existing thickness of each section of the rack;
The device information analysis module is used for analyzing and obtaining the coincidence degree of each section of gear and rack of the lifter according to the device information of the lifter when the lifter runs in the windy and snowy weather, further judging the device condition of the lifter, and analyzing and obtaining the angular speed transmission ratio of the lifter, thereby judging the speed change trend of the lifter;
and the early warning terminal is used for carrying out early warning prompt when the elevator is judged to be unable to start, or the speed change trend of the elevator is abnormal increase or decrease, or the device condition of the elevator is poor.
According to the control method and system for the construction elevator, the comprehensive information of the elevator in the weather of wind and snow is analyzed, the starting feasibility of the elevator in the weather of wind and snow is further analyzed, the problem of limitation in the development feasibility analysis process of the current elevator in the starting control operation of the weather of wind and snow is solved, the device information of the elevator is analyzed, the information of the gear and the rack of the elevator is further analyzed, the feasibility, the comprehensiveness and the objectivity of the elevator device are analyzed, the reliability and the authenticity of analysis results are calculated according to each section, and then a reliable basis is provided for the follow-up targeted management and the balanced development of the elevator control.
The foregoing is merely illustrative and explanatory of the principles of the invention, as various modifications and additions may be made to the specific embodiments described, or similar arrangements may be substituted by those skilled in the art, without departing from the principles of the invention or beyond the scope of the invention as defined in the description.
Claims (8)
1. A control method for a construction hoist, comprising:
Step one, comprehensive information acquisition: when the elevator needs to work in rainy and snowy weather, acquiring comprehensive information of the elevator in the current rainy and snowy weather, wherein the comprehensive information comprises material information and environment information of the elevator;
Step two, comprehensive information analysis: according to comprehensive information of the lifter in the current rainy and snowy weather, material information and environment information of the lifter in the current rainy and snowy weather are respectively analyzed, and whether the lifter can be started in the current rainy and snowy weather is further judged;
step three, elevator starting control: when judging that the elevator can be started in the current rainy and snowy weather, controlling the elevator to start to work;
Step four, obtaining device information: acquiring device information of the lifter during wind, snow and weather operation, wherein the device information comprises the rotation angle and rotation speed of the gear, the initial thickness and the existing thickness of each section of the gear, and the initial thickness and the existing thickness of each section of the rack;
fifthly, analyzing device information: according to the device information of the elevator during the running of the wind, snow and air, analyzing and obtaining the coincidence degree of each section of gear and rack of the elevator, further judging the device condition of the elevator, and analyzing and obtaining the angular speed transmission ratio of the elevator, thereby judging the speed change trend of the elevator;
Step six, early warning display: when the elevator is judged to be unable to start, or the speed change trend of the elevator is abnormal increase or decrease, or the device condition of the elevator is poor, early warning display is carried out;
The coincidence degree of each section of gear and each section of rack of the lifter is analyzed, and the specific analysis process is as follows:
C1, according to the calculation formula Obtaining the abrasion degree of the gear of the ith elevator, and then according to a calculation formulaObtaining the abrasion degree of racks of the ith elevator, wherein i is represented by numbers corresponding to racks and gears of each section, i=1, 2.
C2, according to the calculation formulaObtaining the coincidence degree of the gear and the rack of the ith elevator, wherein the coincidence degree of the delta gear and the rack is the coincidence degree of the set gear and the rack which are allowed to float;
The angular speed transmission ratio of the elevator is obtained through analysis, and the specific analysis process is as follows:
According to the calculation formula Obtaining the input angular velocity of the lifter, and then according to the calculation formula/>Deriving the output angular velocity of the elevator, and substituting the input angular velocity and the output angular velocity of the elevator into the calculation formula/>The angular speed transmission ratio of the elevator is obtained.
2. The control method for a construction hoist according to claim 1, wherein the comprehensive information of the hoist in the current weather is obtained, each acquisition point is set inside the hoist at a set interval, an infrared sensor, a weight sensor and a pressure sensor are installed at each acquisition point, and further material information of the hoist is obtained, the material information includes the weight, the stacking inclination angle and the pressure of the material, and a snowfall sensor, a rainfall sensor and a wind speed sensor are installed outside the hoist, and further environmental information of the hoist is obtained, the environmental information includes the snowfall, the rainfall and the top wind speed.
3. A control method for a construction hoist according to claim 2, characterized in that the analysis of the material information of the hoist in the current weather is performed by the following steps:
A1, comparing the weight of materials in the elevator with the rated weight of the elevator set in an elevator safety manual; when the weight of the materials in the elevator is greater than the rated weight of the elevator set in the elevator safety manual, the weight data of the materials is recorded as 0; when the weight of the materials in the elevator is less than the rated weight of the elevator set in the elevator safety manual, the weight data of the materials is recorded as 1;
A2, comparing the stacking inclination angle of the materials in the lifter with the stacking inclination angle of rated materials of the lifter, which is set in a lifter safety manual; when the stacking inclination angle of the materials in the elevator exceeds the stacking inclination angle of the rated materials of the elevator set in the elevator safety manual, recording the stacking inclination angle data of the materials as 0; when the stacking inclination angle of the materials in the elevator does not exceed the stacking inclination angle of the rated materials of the elevator set in the elevator safety manual, recording the stacking inclination angle data of the materials as 1;
A3, respectively subtracting the pressures of all the collecting points at the bottom of the lifter into two pairs, recording the pressure differences, respectively comparing the pressure differences with a set pressure difference threshold value, judging that the pressure of the material in the current lifter to the bottom of the lifter is uneven when a certain pressure difference is larger than the set pressure difference threshold value, and recording the pressure data of the material as 0; otherwise, the pressure data of the material is recorded as 1.
4. A control method for a construction hoist according to claim 3, characterized in that the analysis of the environmental data of the hoist in the current weather is performed as follows:
B1, when the snowfall outside the elevator exceeds the rated snowfall set in the elevator safety manual, recording the snowfall data outside the elevator as 0; when the snowfall outside the elevator does not exceed the rated snowfall set in the elevator safety manual, recording the snowfall outside the elevator as 1;
B2, when the snowfall outside the lifter exceeds the rated rainfall set in the lifter safety manual, recording the rainfall data outside the lifter as 0; when the rainfall outside the elevator does not exceed the rated rainfall set in the elevator safety manual, recording the rainfall data outside the elevator as 1;
B3, when the top wind speed of the elevator exceeds the rated top wind speed set in the elevator safety manual, recording the top wind speed data of the elevator as 0; when the top wind speed of the elevator does not exceed the rated top wind speed set in the elevator safety manual, the top wind speed data of the elevator is recorded as 1.
5. The control method for a construction hoist according to claim 4, characterized in that the determination as to whether the hoist can be started in the current weather or not is made by the following steps:
When the weight data, the stacking inclination angle data and the pressure data of the materials inside the lifter, the snowfall data, the rainfall data and the top wind speed data outside the lifter are all 1, the lifter is judged to be started in the current rainy and snowy weather, otherwise, the lifter is judged to be not started in the current rainy and snowy weather.
6. The control method for a construction hoist according to claim 5, characterized in that the determination of the device condition of the hoist is performed by:
d1, respectively comparing the abrasion degree of each section gear of the elevator with a preset abrasion degree threshold value of the gears, judging that the abrasion degree of a section gear of the elevator is too high and the device condition of the elevator is poor when the abrasion degree of the section gear of the elevator is larger than the preset abrasion degree threshold value of the gears, and otherwise, judging that the abrasion degree of the section gear is normal, thereby judging the abrasion degree condition of each section gear of the elevator;
d2, respectively comparing the abrasion degree of each section of rack of the elevator with a preset abrasion degree threshold value of the rack, judging that the abrasion degree of a section of rack of the elevator is too high and the device condition of the elevator is poor when the abrasion degree of the section of rack of the elevator is larger than the preset abrasion degree threshold value of the rack, and otherwise, judging that the abrasion degree of the section of rack is normal, thereby judging the abrasion degree condition of each section of rack of the elevator;
and D3, comparing the fitness of each section of gear and each rack of the elevator with a preset threshold value of the fitness of the gear and the rack respectively, and judging that the fitness of each section of gear and each rack of the elevator is too low when the fitness of a certain section of gear and each rack of the elevator is smaller than the preset threshold value of the fitness of each section of gear and each rack of the elevator, and judging that the fitness of each section of gear and each rack of the elevator is normal when the device condition of the elevator is poor, so as to judge the fitness of each section of gear and each rack of the elevator.
7. The control method for a construction hoist according to claim 6, characterized in that the determination of the velocity change trend of the hoist is performed by:
When the angular speed transmission ratio of the lifter is larger than 1 but smaller than the upper limit value of the rated angular speed transmission ratio of the lifter, judging that the speed change trend of the lifter is steadily increased; when the angular speed transmission ratio of the lifter is smaller than 1 but larger than the lower limit value of the rated angular speed transmission ratio of the lifter, judging that the speed change trend of the lifter is steadily reduced; when the angular speed transmission ratio of the lifter is 1, judging that the speed change trend of the lifter is stable and unchanged; when the angular speed transmission ratio of the lifter is greater than or equal to the upper limit value of the rated angular speed transmission ratio of the lifter, judging that the speed change trend of the lifter is abnormal increase; when the angular velocity transmission ratio of the elevator is less than or equal to the lower limit value of the rated angular velocity transmission ratio of the elevator, the velocity change trend of the elevator is judged to be abnormal reduction.
8. A system for performing a control method for a construction hoist as claimed in any one of claims 1 to 7, characterized by comprising:
the comprehensive information acquisition module is used for acquiring the comprehensive information of the elevator in the current rainy and snowy weather when the elevator needs to work in the rainy and snowy weather;
the comprehensive information analysis module is used for respectively analyzing the material information and the environment information of the elevator in the current rainy and snowy weather according to the comprehensive information of the elevator in the current rainy and snowy weather, so as to judge whether the elevator can be started in the current rainy and snowy weather;
The elevator starting control module is used for controlling the elevator to start to work when judging that the elevator can be started in the current rainy and snowy weather;
the device information acquisition module is used for acquiring device information of the lifter during wind, snow and weather operation, wherein the device information comprises the rotation angle and rotation speed of the gear, the initial thickness and the existing thickness of each section of the gear, and the initial thickness and the existing thickness of each section of the rack;
The device information analysis module is used for analyzing and obtaining the coincidence degree of each section of gear and rack of the lifter according to the device information of the lifter when the lifter runs in the windy and snowy weather, further judging the device condition of the lifter, and analyzing and obtaining the angular speed transmission ratio of the lifter, thereby judging the speed change trend of the lifter;
and the early warning terminal is used for carrying out early warning prompt when the elevator is judged to be unable to start, or the speed change trend of the elevator is abnormal increase or decrease, or the device condition of the elevator is poor.
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