CN109850766B - Safety detection method and system for hoisting iron ladle by crown block - Google Patents
Safety detection method and system for hoisting iron ladle by crown block Download PDFInfo
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- CN109850766B CN109850766B CN201910081705.3A CN201910081705A CN109850766B CN 109850766 B CN109850766 B CN 109850766B CN 201910081705 A CN201910081705 A CN 201910081705A CN 109850766 B CN109850766 B CN 109850766B
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Abstract
The invention relates to a safety detection method and a system for a crown block to hoist an iron ladle, wherein the detection method is characterized in that the coordinate of each internal space of each span passed by the crown block is realized, the internal space is counted into a system database, then the crown block is accurately positioned in the horizontal direction and the vertical direction to obtain a crown block operation coordinate record, and finally the tracking of a specific iron ladle and the steel ladle is completed by analyzing the crown block operation coordinate record, hoisting and weighing change behaviors; the detection system comprises a real-time data acquisition module, a logic judgment module, an alarm execution module, a tracking display module, a terminal and a data storage module. The invention can detect and alarm the abnormal condition of the crown block in the process of lifting the iron ladle and the steel ladle, thereby increasing the safety of the operation of dispatching the iron ladle and the steel ladle, and having the characteristics of applicability, safety and high efficiency.
Description
Technical Field
The application belongs to the technical field of overhead traveling crane logistics safety monitoring, and particularly relates to a safety detection method and system for an overhead traveling crane to hoist an iron ladle.
Background
The iron (steel) ladle is a main container for carrying out molten iron (molten steel) transportation, transmission and smelting in a steelmaking area, the iron (steel) ladle is hoisted mainly through a crown block hook hoisting trunnion, and the existing method for ensuring whether the crown block hook hoisting iron ladle is safe mainly depends on visual inspection of two sides of the ladle by manpower. The invention aims to design a detection method for detecting whether a crown block is firmly in place or not in the process of hoisting and releasing a ladle and detecting whether an overhead block-hoisting system-steel wire rope-hoisting beam hook-ladle trunnion-trolley-track base system has abnormal deformation or not, thereby improving the safety of the dispatching and transporting operation of the iron (steel) ladle.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a safety detection method and a system for a crown block to lift a ladle, which can detect whether the crown block is firmly in place in the operation process of ladle lifting and ladle releasing and detect whether the crown block-hoisting system-steel wire rope-hoisting beam hook-ladle trunnion-trolley-track base system has abnormal deformation or not, thereby increasing the safety of ladle and ladle dispatching operation.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a safety detection method for hoisting iron ladles by a crown block comprises the steps of firstly realizing the coordinate of each cross-inner space passed by the crown block, recording the space into a system database, then accurately positioning the horizontal direction and the vertical direction of the crown block to obtain the running coordinate record of the crown block, and finally completing the tracking of specific iron ladles and steel ladles by analyzing the running coordinate record, hoisting and weighing change behaviors of the crown block, wherein the analysis is as follows:
the hoisting height and the ladle weight loss height of a specific iron ladle and a specific steel ladle in specific equipment in a specific process during normal production are used as reference values and stored in a system database, then in actual operation, the running coordinate record of a crown block is utilized, according to the vertical height of the crown block with the weighing value changed when the crown block hoists the specific iron ladle and the specific steel ladle at a specific position, the reference value (namely the height value of the hoisting specific iron ladle and the steel ladle at the position) at the normal position is compared, and when the difference value exceeds an alarm threshold value, an alarm signal is sent out for a worker to execute a solution.
The technical scheme of the invention is further improved as follows: when the overhead traveling crane lifts, puts and lifts by crane and the handling, carry out lifting hook balance information analysis to the overhead traveling crane simultaneously to real-time contrast lifting hook crossbeam both sides distance information and state, thereby detect out the horizontal condition of lifting hook crossbeam, rock too big when preventing to lift by crane unilateral lifting hook and handling, increase the security of indisputable ladle, ladle allocation and transportation operation.
The technical scheme of the invention is further improved as follows: the lifting hook balance information analysis is realized through a balance detection device arranged on a lifting hook cross beam of the overhead travelling crane.
The technical scheme of the invention is further improved as follows: the balance detection device is laser positioning equipment.
The technical scheme of the invention is further improved as follows: realizing the coordinate of each cross-internal space passed by the crown block, and recording the coordinate into a system database by the process of;
5.1, performing cross-plane coordination on the feeding span, the refining span and the molten steel receiving span, and performing coordination on the marked working procedure positions, railway positions, scrap steel area positions and ladle placing positions according to actual requirements of a factory;
5.2 inputting the height of a trunnion and a trunnion support of the iron ladle and the steel ladle into a system database according to a corresponding package number, inputting the height of a trolley support of the steel ladle into the system database according to a vehicle number, inputting the horizontal height information of a package placing position into the system database according to a coordinate position, and updating the system database when new equipment is on-line or changed;
and 5.3, collecting Z-axis information of the iron ladle and the steel ladle of each ladle number in the vertical direction at each position when the crane lifts and unloads the iron ladle and the steel ladle in normal production operation.
The technical scheme of the invention is further improved as follows: accurately positioning the crown block in the horizontal direction and the vertical direction, wherein the process is as follows;
6.1, accurately positioning the plane X axis and the plane Y axis by adopting a coding cable in the horizontal direction of the crane cart;
6.2 the precise positioning of the height Z axis is realized by adopting an encoder in the vertical direction of the overhead traveling crane trolley;
6.3 transmitting the positioning information of the crown block into a system database in real time.
The technical scheme of the invention is further improved as follows: the concrete process of analyzing the running coordinate recording, hoisting and releasing and weighing change behaviors of the crown block is as follows:
7.1 in normal production, collecting Z-axis information of each iron ladle and each steel ladle at different working procedure positions at the moment of hoisting and releasing (filtering through a crown block weighing value change signal, and adopting a normal range for screening empty ladles or non-empty ladles), and storing the Z-axis information in a system database;
7.2 in operation, tracking the numbers of the iron ladle and the steel ladle through the behavior of the crown block, calling the size information of the iron ladle and the steel ladle from a system database, and updating data in time when new equipment is on line;
7.3 in operation, judging the process position of the crown block according to the plane position of the crown block, calling the size information of the iron ladle, the ladle containing base or the pallet of the trolley corresponding to the process, and updating data in time when new equipment is on line;
7.4 when the overhead traveling crane lifts and puts and hangs the operation, compare the real-time numerical value of the laser positioning equipment of both sides of trolley crossbeam of the overhead traveling crane in real time, the numerical value difference of both sides is greater than the threshold value or the signal state is abnormal and send out the alarm signal, and carry on the braking operation of cart, dolly and lifting hook to the overhead traveling crane according to presuming, check the overhead traveling crane manually-hoist system-wire rope-lifting beam lifting hook-ladle trunnion-trolley-orbit base system have abnormal deformation, check whether the lifting hook is to the trunnion handling firmly in place, check the iron ladle, ladle put the ladle position to be accurate;
7.5 when the overhead traveling crane lifts by crane and puts and hangs the operation, compare the Z axle information of lifting and putting and hanging the moment (overhead traveling crane weighs the numerical value change, filters out the normal numerical value and fluctuate) and the normal Z axle height information of corresponding iron ladle, ladle and process base in the database, send alarm signal when the difference is too big the threshold value or the signal state is abnormal, and carry out the braking operation of cart, dolly and lifting hook to the overhead traveling crane according to setting for, the overhead traveling crane-hoist system-wire rope-hanging beam lifting hook-ladle trunnion-platform truck-track base system have abnormal deformation, check whether the lifting hook is firmly in place to the handling of trunnion, check the iron ladle, whether the ladle is put the packet position and is accurate.
The technical scheme of the invention is further improved as follows: improve the trunnion of iron ladle, ladle safely, the improvement measure is: increasing the outward expansion radius of the trunnion, and ensuring that the height change exceeds an alarm threshold when the crown block is hooked on the outward expansion of the trunnion; meanwhile, the outward-expanding bulge of the trunnion of the ladle is removed, the smooth outer side tangent plane of the outward-expanding ladle is ensured, and the accident that the crown block is hooked with the bulge is prevented.
A safety detection system for a crown block to hoist an iron ladle aims at realizing a safety detection method for the crown block to hoist the iron ladle, and comprises a real-time data acquisition module, a logic judgment module connected with the real-time data acquisition module, an alarm execution module connected with the logic judgment module, a tracking display module, a terminal and a data storage module, wherein the tracking display module and the terminal are respectively connected with the real-time data acquisition module and the alarm execution module, and the data storage module finally outputs a table.
The technical scheme of the invention is further improved as follows: and the real-time data acquisition module is used for realizing the real-time acquisition of the positions of an X axis, a Y axis and a Z axis of the lifting hook of the overhead traveling crane, the real-time acquisition of a weighing numerical signal of the overhead traveling crane and the real-time acquisition of a laser ranging signal of a beam of the lifting hook of the trolley.
Due to the adoption of the technical scheme, the invention has the beneficial effects that: the invention can detect and alarm the abnormal condition of the crown block in the process of lifting the iron ladle and the steel ladle. The phenomena of non-coincidence of a top hook and a trunnion, wrong hook position and unilateral hook during hoisting can be effectively monitored and alarmed; the phenomena of overlarge swing of the overhead travelling crane and non-horizontal lifting hook can be effectively monitored and alarmed; the phenomena of incorrect position, foreign matter under the bag, incomplete unhooking and the like during bag placing can be effectively monitored and alarmed; the abnormal deformation of the system of the crown block, the hoisting system, the steel wire rope, the hoisting beam hook, the ladle trunnion, the trolley and the track base can be effectively monitored and alarmed; the method has the characteristics of applicability, safety and high efficiency.
The method can be applied to the operation of hoisting iron ladles and steel ladles by the overhead travelling crane and is also suitable for the operation of hoisting other articles by the overhead travelling crane. The method has the characteristics of strong applicability and easy popularization.
Drawings
FIG. 1 is a flow chart of a handling cycle of the method of the present invention;
FIG. 2 is a schematic diagram of the system of the present invention.
Detailed Description
The present invention will be described in further detail with reference to examples.
The invention discloses a safety detection method and a safety detection system for a crown block to hoist an iron ladle, which are used for detecting whether the crown block, a hoisting system, a steel wire rope, a hoisting beam hook, a ladle trunnion, a trolley and a track base system are abnormally deformed or not, detecting whether the trunnion is hoisted and hoisted firmly and in place by the hook, and preventing the unilateral hook from shaking too much during hoisting so as to improve the safety of the iron ladle and ladle dispatching operation. The method can be applied to the operation of hoisting the iron ladle and the steel ladle by the crown block, is also suitable for the operation of hoisting other objects by the crown block, and improves the safety of hoisting the iron ladle and the steel ladle by the crown block.
The invention discloses a detection method for detecting the safety of iron ladle lifted by a crown block, which comprises the following steps of firstly realizing the coordinate of each internal space of each span passed by the crown block, recording the space into a system database, then accurately positioning the crown block in the horizontal direction and the vertical direction to obtain the running coordinate record of the crown block, and finally completing the tracking of specific iron ladle and steel ladle by analyzing the running coordinate record, lifting and releasing and weighing change behaviors of the crown block, wherein the analysis comprises the following steps:
the hoisting height and the ladle weight loss height of a specific iron ladle and a specific steel ladle in specific equipment in a specific process during normal production are used as reference values and stored in a system database, then in actual operation, the running coordinate record of a crown block is utilized, according to the vertical height of the crown block with the weighing value changed when the crown block hoists the specific iron ladle and the specific steel ladle at a specific position, the reference values (the height values of the hoisting specific iron ladle and the steel ladle at the hoisting position and the hoisting position) at the normal position are compared, and when the difference value exceeds an alarm threshold value, an alarm signal is sent out for a worker to execute a solution.
When the overhead traveling crane lifts, puts and lifts by crane and the handling, carry out lifting hook balance information analysis to the overhead traveling crane simultaneously to real-time contrast lifting hook crossbeam both sides distance information and state, thereby detect out the horizontal condition of lifting hook crossbeam, rock too big when preventing to lift by crane unilateral lifting hook and handling, increase the security of indisputable ladle, ladle transportation operation, the balanced detection device of lifting hook analysis of information is realized through setting up on overhead traveling crane lifting hook crossbeam.
The balance detection device is a laser positioning device, such as a laser positioner, and the specific operation is as follows:
1) laser positioning receivers are symmetrically arranged on a crane hook beam, and laser positioning transmitters are correspondingly arranged on a trolley;
2) recording the numerical values of the two laser positioning under the normal state, and acquiring the numerical values and the states of the two laser positioning in real time during operation;
3) real-time numerical value of real-time contrast both sides laser locator can judge whether the lifting hook is under the dolly and the horizontal situation of lifting hook crossbeam through the difference of state and numerical value.
Realizing the coordinate of each cross-internal space passed by the crown block, and recording the coordinate into a system database by the process of;
5.1, performing cross-plane coordination on the feeding span, the refining span and the molten steel receiving span, and performing coordination on the marked working procedure positions, railway positions, scrap steel area positions and ladle placing positions according to actual requirements of a factory;
5.2 inputting the height of a trunnion and a trunnion support of the iron ladle and the steel ladle into a system database according to a corresponding package number, inputting the height of a trolley support of the steel ladle into the system database according to a vehicle number, inputting the horizontal height information of a package placing position into the system database according to a coordinate position, and updating the system database when new equipment is on-line or changed;
and 5.3, collecting Z-axis information of the iron ladle and the steel ladle of each ladle number in the vertical direction at each position when the crane lifts and unloads the iron ladle and the steel ladle in normal production operation.
Accurately positioning the crown block in the horizontal direction and the vertical direction, wherein the process is as follows;
6.1, accurately positioning the plane X axis and the plane Y axis by adopting a coding cable in the horizontal direction of the crane cart;
6.2 the precise positioning of the height Z axis is realized by adopting an encoder in the vertical direction of the overhead traveling crane trolley;
6.3 transmitting the positioning information of the crown block into a system database in real time.
The concrete process of analyzing the running coordinate recording, hoisting and releasing and weighing change behaviors of the crown block is as follows:
7.1 in normal production, collecting Z-axis information of each iron ladle and each steel ladle at different working procedure positions at the moment of hoisting and releasing (filtering through a crown block weighing value change signal, and adopting a normal range for screening empty ladles or non-empty ladles), and storing the Z-axis information in a system database;
7.2 in operation, tracking the numbers of the iron ladle and the steel ladle through the behavior of the crown block, calling the size information of the iron ladle and the steel ladle from a system database, and updating data in time when new equipment is on line;
7.3 in operation, judging the process position of the crown block according to the plane position of the crown block, calling the size information of the iron ladle, the ladle containing base or the pallet of the trolley corresponding to the process, and updating data in time when new equipment is on line;
7.4 when the overhead traveling crane lifts and puts and hangs the operation, compare the real-time numerical value of the laser positioning equipment of both sides of trolley crossbeam of the overhead traveling crane in real time, the numerical value difference of both sides is greater than the threshold value or the signal state is abnormal and send out the alarm signal, and carry on the braking operation of cart, dolly and lifting hook to the overhead traveling crane according to presuming, check the overhead traveling crane manually-hoist system-wire rope-lifting beam lifting hook-ladle trunnion-trolley-orbit base system have abnormal deformation, check whether the lifting hook is to the trunnion handling firmly in place, check the iron ladle, ladle put the ladle position to be accurate;
7.5 when the overhead traveling crane lifts by crane and puts and hangs the operation, compare the Z axle information of lifting and putting and hanging the moment (overhead traveling crane weighs the numerical value change, filters out the normal numerical value and fluctuate) and the normal Z axle height information of corresponding iron ladle, ladle and process base in the database, send alarm signal when the difference is too big the threshold value or the signal state is abnormal, and carry out the braking operation of cart, dolly and lifting hook to the overhead traveling crane according to setting for, the overhead traveling crane-hoist system-wire rope-hanging beam lifting hook-ladle trunnion-platform truck-track base system have abnormal deformation, check whether the lifting hook is firmly in place to the handling of trunnion, check the iron ladle, whether the ladle is put the packet position and is accurate.
Improve the trunnion of iron ladle, ladle safely, the improvement measure is: increasing the outward expansion radius of the trunnion, and ensuring that the height change exceeds an alarm threshold when the crown block is hooked on the outward expansion of the trunnion; meanwhile, the outward-expanding bulge of the trunnion of the ladle is removed, the smooth outer side tangent plane of the outward-expanding ladle is ensured, and the accident that the crown block is hooked with the bulge is prevented.
The invention also discloses a safety detection system for the iron ladle lifted by the crown block, and the safety detection system is used for realizing the safety detection method for the iron ladle lifted by the crown block, and the safety detection system is shown in figure 2.
And the data storage module is used for storing and calling the basic information of various devices in the steel-making area, the inter-process position information and the data generated by various operations. Storing a packet number input system database corresponding to dimensional parameters such as the height of a trunnion, the height of a trunnion support and the like of an iron ladle and a ladle, and corresponding the dimensional parameters such as the height of a trolley support of the ladle to a packet number input module according to the vehicle number; storing feeding span, refining span, molten steel receiving span, each process position, railway position, scrap steel area position, ladle placing position information and other information; according to the production time, Z-axis information of the crown block at the moment of hoisting and releasing (filtered by a crown block weighing value change signal and screened normal ranges of empty packages or non-empty packages) at different working procedure positions of each iron package and steel package in normal production is stored for detection and analysis.
The real-time data acquisition module is used for realizing the real-time acquisition of the X-axis, Y-axis and Z-axis positions of the lifting hook of the overhead travelling crane, the real-time acquisition of the weighing numerical signal of the overhead travelling crane and the real-time acquisition of the laser ranging signal of the beam of the lifting hook of the trolley
And the logic judgment module is used for comparing real-time numerical values and states of the laser locators at two sides of the trolley in real time, comparing Z-axis information at the moment of hoisting and releasing (weighing numerical value change of the overhead travelling crane and filtering fluctuation of normal numerical values) with normal Z-axis height information of corresponding iron (steel) packages and process bases in the database, and determining whether to alarm and corresponding linkage execution through threshold values and logics set in different scenes.
And the alarm and execution module is used for sending an alarm signal when the threshold value is exceeded, and braking the crane, the trolley and the lifting hook according to the setting.
The tracking display module and the terminal are arranged in a dispatching room and an overhead traveling crane operation room and are matched with an overhead traveling crane dispatching system to display the position information and the weighing information of the overhead traveling crane in real time and display the alarm state.
The detailed operation steps are as follows:
101, starting working when the system is online;
102, loading data from a system database, and initializing working coordinate information, equipment information and lifting height information of ladle-process equipment;
105, collecting hook balance state information in real time in the descending process of the hook, and if the state is abnormal, turning to 106;
and step 106, starting alarming and executing a preset program in the step. Continuing to step 105 after the abnormity is removed, and entering step 107 after the hook balance information is normal;
108, the overhead traveling crane starts to lift the iron ladle and the steel ladle, the balance state information of the lifting hook is collected in real time, and if the state is abnormal, the step 109 is carried out;
and step 109, starting alarming and executing the preset program. Continuing to enter step 108 after the abnormity is removed, entering step 110 after the hook balance information is normal, comparing Z-axis (vertical height) data when the crown block lifts with the normal lifting height of the steel ladle on the equipment in the process in the database, and turning to step 111 when the difference value is abnormal, starting to alarm and executing a preset program in the step; continuing to enter a step 110 after the abnormity is removed, and entering a step 112 after the hoisting information is normal, hoisting and moving to a target process coordinate;
113, acquiring hook balance state information in real time in the advancing process, if the state is abnormal, turning to 114, starting to alarm and executing a preset program in the step; continuing to step 113 after the abnormity is removed, and continuing to step 115 after the hook balance information is normal, and continuing to hoist;
In summary, the following steps:
the safety detection method and the system for the crown block in the operation process of hoisting the iron ladle and the steel ladle can detect whether the crown block-hoisting system-steel wire rope-hoisting beam hook-steel ladle trunnion-trolley-track base system has abnormal deformation or not, detect whether the hoisting of the trunnion is firm and in place or not by the hook, detect whether the position of the crown block for placing the ladle is abnormal or not, detect the horizontal condition of the beam of the hook, and prevent the single-side hook from shaking too much during hoisting and releasing, thereby increasing the safety of the operation of dispatching the iron ladle and the steel ladle. It should be noted that although the embodiments according to the present invention have been described above with reference to the drawings, those skilled in the art will appreciate that various modifications can be made to the embodiments without departing from the scope of the present invention. Therefore, the scope of the invention should be determined by the contents of the appended claims.
Claims (6)
1. A safety detection method for hoisting iron ladles by a crown block is characterized by comprising the following steps: firstly, realizing the coordinate of each cross-internal space passed by the crown block, and recording the coordinate into a system database, then accurately positioning the crown block in the horizontal direction and the vertical direction to obtain a crown block operation coordinate record, and finally completing the tracking of a specific ladle and a steel ladle through the analysis of the crown block operation coordinate record, the lifting and the weighing change behavior, wherein the analysis is as follows:
the hoisting height and the ladle weight loss height of a specific iron ladle and a specific steel ladle in specific equipment in a specific process during normal production are used as reference values and stored in a system database, then in actual operation, the running coordinate record of a crown block is utilized, according to the vertical height of the crown block when the crown block hoists and hoists the specific iron ladle and the specific steel ladle at a specific position, the reference value at the normal position is compared, and an alarm signal is sent out when the difference value exceeds an alarm threshold value, so that a worker can execute a solution; when the overhead traveling crane is lifted, released and lifted, the overhead traveling crane is subjected to lifting hook balance information analysis simultaneously to compare the distance information and the state of two sides of a lifting hook cross beam in real time, so that the horizontal condition of the lifting hook cross beam is detected, the phenomenon that a single-side lifting hook is shaken too much during lifting and releasing is prevented, and the safety of the operation of dispatching and transporting the iron ladle and the steel ladle is improved;
realizing the coordinate of each cross-internal space passed by the crown block, and recording the coordinate into a system database by the process of;
1.1, performing cross-plane coordination on a feeding span, a refining span and molten steel receiving span, and performing coordination on marked working procedure positions, railway positions, scrap steel area positions and ladle placing positions according to actual requirements of a factory;
1.2 inputting a packet number corresponding to the height of a trunnion and the height of a trunnion support of an iron ladle and a steel ladle into a system database, inputting a packet number corresponding to the height of a trolley support of the steel ladle into the system database according to a car number, inputting the horizontal height information of a ladle placing position into the system database according to a coordinate position, and updating the system database when new equipment is on-line or changed;
1.3 collecting Z-axis information of iron ladles and steel ladles of each ladle number in the vertical direction of each position when the crane lifts and unloads the iron ladles and the steel ladles in normal production operation.
2. The safety detection method for the crown block handling iron ladle according to claim 1, characterized in that: the lifting hook balance information analysis is realized through a balance detection device arranged on a lifting hook cross beam of the overhead travelling crane.
3. The safety detection method for the crown block handling iron ladle according to claim 2, characterized in that: the balance detection device is laser positioning equipment.
4. The safety detection method for the crown block handling iron ladle according to claim 1, characterized in that: accurately positioning the crown block in the horizontal direction and the vertical direction, wherein the process is as follows;
4.1, accurately positioning the plane X axis and the plane Y axis by adopting a coding cable in the horizontal direction of the crane cart;
4.2 the precise positioning of the height Z axis is realized by adopting an encoder in the vertical direction of the overhead traveling crane trolley;
4.3 the positioning information of the crown block is transmitted into the system database in real time.
5. The safety detection method for the crown block handling iron ladle according to claim 1, characterized in that: the concrete process of analyzing the running coordinate recording, hoisting and releasing and weighing change behaviors of the crown block is as follows:
5.1 in normal production, collecting Z-axis information of each iron ladle and each steel ladle at different working procedure positions at the moment of hoisting and releasing, and storing the Z-axis information in a system database;
5.2 in operation, tracking the numbers of the iron ladle and the steel ladle through the behavior of the crown block, calling the size information of the iron ladle and the steel ladle from a system database, and updating data in time when new equipment is on line;
5.3 in operation, judging the process position of the crown block according to the plane position of the crown block, calling the size information of the iron ladle, the ladle containing base or the pallet of the trolley corresponding to the process, and updating data in time when new equipment is on line;
5.4 when the overhead traveling crane lifts and puts and hangs the operation, compare the real-time numerical value of the laser locating equipment of both sides of trolley crossbeam of the overhead traveling crane in real time, the numerical value difference of both sides is greater than the threshold value or the signal state is abnormal and send out the alarm signal, and carry on the braking operation of cart, dolly and lifting hook to the overhead traveling crane according to presuming, check the overhead traveling crane manually-hoist system-wire rope-lifting beam lifting hook-ladle trunnion-trolley-orbit base system have abnormal deformation, check whether the lifting hook is to the trunnion handling firmly in place, check the iron ladle, ladle put the ladle position to be accurate;
5.5 when the crown block is lifted and released, comparing the Z-axis information at the moment of lifting and releasing with the normal Z-axis height information of corresponding iron ladles, steel ladles and process bases in the database, sending an alarm signal when the difference is larger than a threshold value or the signal state is abnormal, braking the crown block by a cart, a trolley and a lifting hook according to the setting, manually checking whether the crown block-hoisting system-steel wire rope-hoisting beam lifting hook-steel ladle trunnion-trolley-track base system has abnormal deformation, checking whether the lifting hook firmly lifts the trunnion in place, and checking whether the iron ladles and the steel ladles are released accurately.
6. The safety detection method for the crown block handling iron ladle according to claim 4, characterized in that: improve the trunnion of iron ladle, ladle safely, the improvement measure is: increasing the outward expansion radius of the trunnion, and ensuring that the height change exceeds an alarm threshold when the crown block is hooked on the outward expansion of the trunnion; meanwhile, the outward-expanding bulge of the trunnion of the ladle is removed, the smooth outer side tangent plane of the outward-expanding ladle is ensured, and the accident that the crown block is hooked with the bulge is prevented.
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| CN113233337A (en) * | 2021-04-16 | 2021-08-10 | 唐山不锈钢有限责任公司 | Real-time alarm system for illegal operation of steelmaking overhead travelling crane |
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