CN112985861B - Fault diagnosis method for sector section of withdrawal and straightening machine - Google Patents
Fault diagnosis method for sector section of withdrawal and straightening machine Download PDFInfo
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- CN112985861B CN112985861B CN202110192146.0A CN202110192146A CN112985861B CN 112985861 B CN112985861 B CN 112985861B CN 202110192146 A CN202110192146 A CN 202110192146A CN 112985861 B CN112985861 B CN 112985861B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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Abstract
The invention relates to a fault diagnosis method for a sector section of a tension leveler, and belongs to the technical field of fault diagnosis of casting blank equipment. The diagnosis method comprises the steps of checking whether control equipment of the oil cylinder works normally, wherein the control equipment comprises an electric cabinet, checking whether the pressure of a hydraulic system of a sector section is enough, checking whether the working voltage in the electric cabinet is 24v or not when the pressure of the electric cabinet, a remote upper computer and the pressure of the hydraulic system are normal, and checking whether each relay and a fuse in the electric cabinet are intact or not; when the voltage in the electric cabinet, a relay and a safety in the electric cabinet work normally, detecting whether a first connecting cable between the electric cabinet and the fan-shaped section is connected well, and then measuring whether each electromagnetic valve controlled by the electric cabinet is intact; and finally, detecting whether a valve table and an oil way of the sector hydraulic system have problems or not. By the method, an operator can quickly diagnose the reason of the lifting fault of the oil cylinder, solve the lifting fault of the oil cylinder as soon as possible and recover the normal production of the sector section as soon as possible.
Description
Technical Field
The invention belongs to the technical field of fault diagnosis of casting blank equipment, and particularly relates to a fault diagnosis method for a sector section of a tension leveler.
Background
The sector section refers to a withdrawal and straightening machine part (total 14 sections) in a slab system, is an important component in the whole slab system, and is mainly used for taking out crystallized molten steel (hot billet) from a crystallizer and a foot roll section through the pressing and transmission of a main driving roll of each section, and the internal quality of the hot billet is changed through the conversion of cold and hot billet pressure and the characteristics and functions of the hot billet (continuous bending, continuous straightening, dynamic soft pressing and the like). The fan-shaped section consists of 14 sections and is divided into three parts, namely a bending section (1 section-6 section), a straightening section (7 section-8 section) and a horizontal section (9 section-14 section), each section is provided with an independent electric cabinet, all the electric cabinets are connected in series by a CAN-bus (14 sections are set as terminals) and receive data from a server, and each section is provided with a main driving roller (12 sections are not provided) and four oil cylinders respectively for controlling the distance between the roll gaps of the whole section.
At present, some faults occurring in a sector section are detected and processed by any system method, so that the faults cannot be recovered as soon as possible, and further the production efficiency is seriously influenced.
Disclosure of Invention
The invention provides a fault diagnosis method for a sector section of a tension leveler, which is used for solving the technical problem that some faults occurring in the sector section cannot be recovered as soon as possible and the production efficiency is seriously influenced.
The invention is realized by the following technical scheme: a method for diagnosing faults of a sector section of a tension leveler comprises the following steps:
checking whether control equipment corresponding to the oil cylinder works normally, wherein the control equipment comprises an electric cabinet and a remote upper computer, and checking whether the pressure of a hydraulic system is enough, and when the pressures of the electric cabinet, the remote upper computer and the hydraulic system are normal, checking whether the working voltage in the electric cabinet is normal, and checking whether each relay and corresponding safety in the electric cabinet are intact;
when the voltage of the electric cabinet and relays and fuses in the electric cabinet work normally, detecting whether a first connecting cable between the electric cabinet and the fan-shaped section is connected perfectly or not, and then measuring whether each electromagnetic valve controlled by the electric cabinet is connected perfectly or not;
and detecting whether a valve table and an oil way of the hydraulic system of the sector section have problems or not when the first connecting cable between the electric control box and the sector section is connected perfectly and each electromagnetic valve controlled by the electric control box works normally.
Further, in order to better implement the present invention, the method for checking whether the control device of the sector normally operates specifically includes:
whether the remote upper computer gives an emergency stop or not is checked, when the remote upper computer gives an emergency stop, the operation mode of the electric cabinet corresponding to the remote upper computer is converted into a local mode, then a lifting button on a control panel of the electric cabinet is clicked for 1-2 times, and then the operation mode of the electric cabinet is converted into a remote mode to be recovered;
and checking whether the electric cabinet gives an emergency stop or not, when the electric cabinet gives an emergency stop, converting the operation mode of the electric cabinet into a verification mode, inching a manual lifting button on a control panel of the electric cabinet, checking whether each electromagnetic valve controlled by the electric cabinet is electrified or not, detecting whether a valve table and an oil circuit of the hydraulic system of the fan-shaped section corresponding to the electric cabinet have problems or not when each electromagnetic valve controlled by the electric cabinet is electrified normally, and measuring whether each electromagnetic valve controlled by the electric cabinet is intact or not when each electromagnetic valve controlled by the electric cabinet is electrified abnormally.
Further, in order to better implement the present invention, the method for measuring whether each electromagnetic valve controlled by the electric cabinet is intact specifically comprises:
connecting a first meter pen of a multimeter to the ground, connecting a second meter pen of the multimeter to second terminals under the relays in the electric control box, observing whether the resistance measured by the multimeter is between 22.4 and 22.6 omega, judging that the electromagnetic valve works normally when the resistance displayed by the multimeter is between 22.4 and 22.6 omega, and judging that the electromagnetic valve has faults when the resistance displayed by the multimeter is not between 22.4 and 22.6 omega.
Further, in order to better implement the present invention, the method for detecting whether the first connection cable between the electric cabinet and the segment is connected perfectly comprises:
and taking down the plug of the first connecting cable from the fan-shaped section, then inserting the plug of the first connecting cable into the fan-shaped section with a good state, judging that the first connecting cable is good when the connected state is normal, and judging that the first connecting cable breaks down when the connected state is abnormal.
Further, in order to better implement the present invention, the method for checking whether each relay in the electric cabinet is intact specifically comprises:
converting the selection mode of the electric cabinet into a manual state, and driving the relay to be closed by pressing an ascending or descending button on a control panel of the electric cabinet;
and using a universal meter to check whether voltage output exists at the lower end terminal of each relay, judging that the relay is intact when the voltage output exists at the lower end terminal of the relay, and judging that the relay breaks down when the voltage output does not exist at the lower end terminal of the relay.
Further, in order to better implement the present invention, position numbers of four oil cylinders on the sector are determined according to a pouring direction, specifically, two oil cylinders on the left side along the pouring direction are respectively a 1# oil cylinder and a 3# oil cylinder, two oil cylinders on the right side are respectively a 2# oil cylinder and a 4# oil cylinder, the position sensor corresponding to each oil cylinder is respectively connected in series through a second connection cable, and the series connection mode of the four oil cylinder position sensors is as follows:
the 2# oil cylinder position sensor is connected between the 4# oil cylinder position sensor and the 1# oil cylinder position sensor in series, the 1# oil cylinder position sensor is connected between the 2# oil cylinder position sensor and the 3# oil cylinder position sensor in series, the 3# oil cylinder position sensor is connected with a terminal resistor, and the 4# oil cylinder position sensor is connected with the electric cabinet through another second connecting cable;
the fault of the sector section of the tension leveler comprises that the electric cabinet cannot identify the corresponding oil cylinder position sensor, and the method for diagnosing that the electric cabinet cannot identify the corresponding oil cylinder position sensor specifically comprises the following steps:
checking whether a fuse on an X9 terminal row in the electric cabinet is intact, when the fuse on the X9 terminal row in the electric cabinet is intact, measuring whether a resistance value between 1-2 terminals of the X9 terminal row is between 120 omega and 140 omega, when the resistance value between 1-2 terminals of the X9 terminal row is between 120 omega and 140 omega, detecting whether a second connecting cable between each position sensor of the fan-shaped section corresponding to the electric cabinet is intact, and when the second connecting cable between each position sensor is intact, checking whether the terminal resistance plug connected with the 3# oil cylinder is connected or replacing the terminal resistance connected with the 3# oil cylinder.
Further, in order to better implement the present invention, the method for checking the quality of the insurance in the electric cabinet specifically comprises:
and measuring the on-off condition of the fuse by using a multimeter.
Further, in order to better implement the present invention, the method for detecting whether the second connection cable between the position sensors of the fan-shaped segment corresponding to the electric cabinet is intact specifically comprises:
cutting off a power supply of the electric cabinet, removing second connecting cables among the position sensors of the oil cylinders, and only reserving second connecting cables electrically connected between the 4# oil cylinder position sensor and the electric cabinet;
the terminal resistor is taken down from the 3# oil cylinder position sensor and is arranged on the 4# oil cylinder position sensor;
switching on a power supply of the electric cabinet, checking whether the electric cabinet can identify the 4# oil cylinder position sensor or not, judging that a second connecting cable electrically connected between the 4# oil cylinder position sensor and the electric cabinet is normal when the electric cabinet can identify the 4# oil cylinder position sensor, and judging that the second connecting cable electrically connected between the 4# oil cylinder position sensor and the electric cabinet has a fault when the electric cabinet cannot identify the 4# oil cylinder position sensor;
when the electric cabinet can identify the 4# oil cylinder position sensor, the power supply of the electric cabinet is cut off again, then the terminal resistor is taken down from the 4# oil cylinder position sensor and installed on the 2# oil cylinder position sensor, then a second connecting cable between the 4# oil cylinder position sensor and the 2# oil cylinder position sensor is connected, finally the power supply of the electric cabinet is connected, whether the 4# oil cylinder position sensor and the 2# oil cylinder position sensor can be identified by the electric cabinet or not is checked, when the electric control box can identify the 4# oil cylinder position sensor and the 2# oil cylinder position sensor, the second connection cable between the # 4 cylinder position sensor and the # 2 cylinder position sensor is judged to be normal, when the electric control box can not identify the 4# oil cylinder position sensor and the 2# oil cylinder position sensor, judging that a second connecting cable between the 4# oil cylinder position sensor and the 2# oil cylinder position sensor has a fault;
and in the same way, whether a second connecting cable between the 2# oil cylinder position sensor and the 1# oil cylinder position sensor and a second connecting cable between the 1# oil cylinder position sensor and the 3# oil cylinder position sensor have faults or not is detected respectively.
Further, in order to better implement the present invention, the segment fault of the tension leveler further includes a segment communication fault, and the method for diagnosing the segment communication fault specifically includes:
firstly, whether the power supply of the electric control box corresponding to each sector section is normal is checked, and then whether the communication between the controller corresponding to each sector section and the server is normal is checked.
Further, in order to better implement the present invention, the segment comprises a segment 1, a segment 2, and a segment 3 … … 14;
the method for checking whether the communication between the controller and the server corresponding to each sector is normal specifically includes:
detecting from the segment 1, powering off the electric cabinet corresponding to the segment 1, then disconnecting the 2, 4 and 6 terminal wires on the X8 terminal row in the electric cabinet, and picking up the seal pins on the 7 and 8 terminals to separate the segment 1 from the rest segments;
electrifying the electric control box corresponding to the segment 1, displaying that the segment 1 is green on the server, judging that the CAN-bus connection between the electric control box of the segment 1 and the server is normal, and displaying that the segment 1 is red on the server, judging that the CAN-bus connection between the electric control box of the segment 1 and the server is in fault;
and by analogy, whether CAN-bus connection between the electric control boxes of the other fan-shaped sections and the server has faults or not is detected in sequence.
Compared with the prior art, the invention has the following beneficial effects:
the invention provides a method for diagnosing faults of a sector section of a tension leveler, wherein the faults of the sector section of the tension leveler comprise lifting faults of an oil cylinder, and the method for diagnosing the faults of the sector section of the tension leveler comprises the following steps: firstly, checking whether control equipment corresponding to an oil cylinder normally works or not, wherein the control equipment comprises an electric cabinet and a remote upper computer, checking whether the pressure of a hydraulic system of a sector section is enough or not, checking whether the working voltage in the electric cabinet is normal or not and checking whether each relay and a corresponding safety in the electric cabinet are intact or not when the pressure of the electric cabinet, the remote upper computer and the hydraulic system are normal, detecting whether a first connecting cable between the electric cabinet and the sector section is intact or not when the voltage in the electric cabinet and the relay and the safety in the electric cabinet are normal, then measuring whether each electromagnetic valve controlled by the electric cabinet is intact or not, and detecting whether a valve table and an oil circuit of the sector section hydraulic system have problems or not when the first connecting cable between the electric cabinet and the sector section is intact and each electromagnetic valve controlled by the electric cabinet normally works, by the method, the problem of lifting fault of the oil cylinder of the sector section of the withdrawal and straightening machine can be solved, so that normal production of the sector section of the withdrawal and straightening machine can be recovered in the shortest time, and the enterprise profit is improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1:
the embodiment provides a method for diagnosing faults of a sector section of a tension leveler, wherein the faults of the sector section of the tension leveler comprise lifting faults of an oil cylinder, and the method for diagnosing specifically comprises the following steps: firstly, checking whether control equipment corresponding to an oil cylinder works normally, wherein the control equipment comprises an electric cabinet and a remote upper computer, and checking whether the pressure of a hydraulic system of a sector section is enough, when the pressure of the electric cabinet, the remote upper computer and the hydraulic system is normal, checking whether the working voltage in the electric cabinet is normal, and noting that the normal working voltage is 24V, checking whether each relay and a corresponding safety catch in the electric cabinet are intact, when the voltage in the electric cabinet and the electric cabinet as well as the relay and the safety catch in the electric cabinet work normally, detecting whether a first connecting cable between the electric cabinet and the sector section is connected intact, then measuring whether each electromagnetic valve controlled by the electric cabinet is intact, and when the first connecting cable between the electric cabinet and the sector section is connected and each electromagnetic valve controlled by the electric cabinet works normally, whether a problem exists in a valve table and an oil way of a sector hydraulic system is detected, and the method can solve the problem of lifting fault of a sector oil cylinder of the withdrawal and straightening machine so as to ensure that the normal production of the sector of the withdrawal and straightening machine is recovered in the shortest time, thereby improving the enterprise profit.
It is to be noted that the segment of the withdrawal and straightening unit in this embodiment is the same as that in the prior art, and the fault diagnosis method provided in this embodiment actually diagnoses some faults occurring when the segment of the withdrawal and straightening unit in the prior art is in operation, so detailed descriptions on the structure and the electric control mode of the segment of the withdrawal and straightening unit are not repeated again.
As an implementation manner of this embodiment, the method for checking whether the control device of the segment is working normally in this embodiment specifically includes:
whether the remote upper computer is in emergency stop reporting or not is checked, when the remote upper computer reports the emergency stop, the fact that the position difference of two oil cylinders in the four oil cylinders of the fan-shaped section controlled by the remote upper computer is more than 4mm is indicated, at the moment, the operation mode of the electric cabinet corresponding to the remote upper computer is converted into a local mode, then the button is lifted for 1-2 times on a control panel according to the electric cabinet, and then the operation mode of the electric cabinet is converted into a remote mode to be recovered.
Look over afterwards whether the electric cabinet reports emergency stop, when the electric cabinet reports emergency stop, then show that there is the position difference of two hydro-cylinders in four hydro-cylinders of the fan-shaped section that this electric cabinet corresponds more than 15mm, at this moment, then convert the operation mode of electric cabinet into the check-up mode, the manual lifting button on the electronic electric cabinet control panel afterwards, and whether each solenoid valve of looking over electric cabinet control simultaneously is got the electricity, when each solenoid valve of electric cabinet control got the electricity and is just normal, then detect whether there is a problem in valve stage and the oil circuit of the hydraulic system of the fan-shaped section that the electric cabinet corresponds, when each solenoid valve of electric cabinet control got the electricity and is just normal, then measure whether each solenoid valve of electric cabinet control is intact.
By the method, the problem that the remote upper computer and the electric cabinet corresponding to a certain sector are reported to be in emergency stop can be quickly solved, so that the normal production of the sector of the withdrawal and straightening unit can be recovered in the shortest time, and the enterprise profit is improved.
As an implementation manner of this embodiment, a method for measuring whether each electromagnetic valve controlled by the electric cabinet is intact in this embodiment specifically includes:
and grounding a first meter pen of the multimeter, electrically connecting a second meter pen of the multimeter with second terminals under relays in the electric control box, observing whether the resistance measured by the multimeter is between 22.4 and 22.6 omega, judging that the electromagnetic valve works normally when the resistance displayed by the multimeter is between 22.4 and 22.6 omega, and judging that the electromagnetic valve has a fault when the resistance displayed by the multimeter is not between 22.4 and 22.6 omega. By the method, whether the electromagnetic valve controlled by the electric cabinet is intact can be quickly diagnosed, so that an operator can be helped to quickly diagnose the lifting fault of the oil cylinder and the reason that the electric cabinet gives an emergency stop, and the efficiency of solving the faults is improved.
As an implementation manner of this embodiment, the method for detecting whether the first connection cable between the electric cabinet and the segment is connected perfectly in this embodiment specifically includes:
the plug with first connecting cable takes off from the fan-shaped section, insert the first connecting cable plug that will take off afterwards on the fan-shaped section that the state is intact, whether normal work of the fan-shaped section that the observation state is intact, when the fan-shaped section that the state is intact normally works, then judge that above-mentioned first connecting cable breaks down, then change a new first connecting cable this moment, alright solve because the trouble that above-mentioned first connecting cable goes wrong and leads to.
As an implementation manner of this embodiment, a method for checking whether each relay in the electric cabinet is intact in this embodiment specifically includes:
convert the selection mode of electric cabinet into manual state, press ascending or decline button on the control panel of electric cabinet afterwards to the relay that the drive corresponds is closed, then uses the universal meter to inspect whether there is voltage output in every relay lower extreme terminal, when there is voltage output in relay lower extreme terminal, then judges that the relay is intact, when there is not voltage output in relay lower extreme terminal, then judges that this relay breaks down, then need change new relay this moment.
By the method, the operator can be helped to quickly diagnose the reason of the lifting fault of the oil cylinder, so that the lifting fault of the oil cylinder can be solved as soon as possible.
As a more preferred implementation manner of this embodiment, the sector segment of the withdrawal and straightening unit in this embodiment is the same as that in the prior art, four cylinders on a sector segment are numbered according to the pouring direction, specifically, two cylinders on the left side of the pouring direction are respectively a 1# cylinder and a 3# cylinder, two cylinders on the right side are respectively 2# and 4# cylinders, a position sensor corresponding to each cylinder is connected in series through a second connection cable, and the series connection manner of the four cylinder position sensors is as follows:
the 2# oil cylinder position sensor is connected between the 4# oil cylinder position sensor and the 1# oil cylinder position sensor in series, the 1# oil cylinder position sensor is connected between the 2# oil cylinder position sensor and the 3# oil cylinder position sensor in series, the 3# oil cylinder position sensor is connected with a terminal resistor, and the 4# oil cylinder position sensor is connected with the electric cabinet through another second connecting cable.
The segment fault of the tension leveler in the embodiment further comprises an oil cylinder position sensor which cannot be identified by the electric control box, when the fault occurs, the control panel of the server simultaneously displays the faults of the four position sensors, and the method for diagnosing the fault specifically comprises the following steps:
whether insurance on an X9 terminal row in the electric cabinet is good or not is checked, when insurance on an X9 terminal row in the electric cabinet is good, whether a resistance value between 1-2 terminals of an X9 terminal row is between 120 omega and 140 omega is measured, whether second connecting cables between position sensors of a fan-shaped section corresponding to the electric cabinet are good or not is detected when the resistance value between 1-2 terminals of an X9 terminal row is between 120 omega and 140 omega, and whether a terminal resistance plug connected with a 3# oil cylinder is connected or not is checked or the terminal resistance connected with the 3# oil cylinder is replaced when the second connecting cables between the position sensors are good.
By the method, the fault that the electric cabinet cannot identify the oil cylinder position sensor can be rapidly diagnosed, so that an operator can be helped to rapidly solve the fault, and the fault solving efficiency is improved.
As a specific implementation manner of this embodiment, a method for checking whether a safe in an electric cabinet is good or bad in this embodiment specifically includes: and measuring the on-off condition of the fuse by using a multimeter. If the fuse is conducted, judging that the fuse is normal; if the fuse is broken, the fuse is judged to be damaged, and at the moment, a new fuse needs to be replaced. By the method, the diagnosis speed that the electric cabinet cannot identify the fault reason of the oil cylinder position sensor and the fault reason of the oil cylinder lifting can be accelerated for operators.
As a specific implementation manner of this embodiment, in this embodiment, a method for detecting whether a second connection cable between position sensors of a sector section corresponding to an electronic control box is intact specifically includes:
firstly, cutting off a power supply of an electric cabinet corresponding to the segment of the segment, then removing second connecting cables among the position sensors of the oil cylinders of the segment, and only reserving second connecting cables electrically connected between the 4# oil cylinder position sensor and the electric cabinet; then taking down a terminal resistor from the 3# oil cylinder position sensor and installing the terminal resistor on the 4# oil cylinder position sensor, switching on a power supply of the electric cabinet, checking whether the electric cabinet can identify the 4# oil cylinder position sensor, judging that a second connecting cable electrically connected between the 4# oil cylinder position sensor and the electric cabinet is normal when the electric cabinet can identify the 4# oil cylinder position sensor, judging that the second connecting cable electrically connected between the 4# oil cylinder position sensor and the electric cabinet has a fault when the electric cabinet cannot identify the 4# oil cylinder position sensor, and replacing the second connecting cable electrically connected between the 4# oil cylinder position sensor and the electric cabinet at the moment;
when the electric cabinet can identify the 4# oil cylinder position sensor, the power supply of the electric cabinet is cut off again, then the terminal resistor is taken down from the 4# oil cylinder position sensor and installed on the 2# oil cylinder position sensor, then a second connecting cable between the 4# oil cylinder position sensor and the 2# oil cylinder position sensor is connected, finally the power supply of the electric cabinet is switched on, whether the 4# oil cylinder position sensor and the 2# oil cylinder position sensor can be identified by the electric cabinet or not is checked, when the 4# oil cylinder position sensor and the 2# oil cylinder position sensor can be identified by the electric cabinet, the second connecting cable between the 4# oil cylinder position sensor and the 2# oil cylinder position sensor is judged to be normal, and when the 4# oil cylinder position sensor and the 2# oil cylinder position sensor cannot be identified by the electric cabinet, the second connecting cable between the 4# oil cylinder position sensor and the 2# oil cylinder position sensor is judged to be in fault, at the moment, a second connecting cable between the 4# oil cylinder position sensor and the 2# oil cylinder position sensor needs to be replaced; and by analogy, whether a second connecting cable between the 2# oil cylinder position sensor and the 1# oil cylinder position sensor and a second connecting cable between the 1# oil cylinder position sensor and the 3# oil cylinder position sensor break down or not is detected respectively, and when the second connecting cable breaks down, a new second connecting cable is replaced.
By the method, a user can quickly detect the fault reason of a certain second connecting cable between the oil cylinder position sensors, so that an operator is helped to quickly solve communication interruption caused by the fault reason and the fault that the corresponding oil cylinder position sensor cannot be identified by the electric cabinet.
As a more preferable embodiment of the present embodiment, in the present embodiment, the segment is divided into a segment 1, a segment 2, and a segment 3, and a segment … … 14, which are sequentially arranged, as in the prior art. The fault of the sector section of the tension leveler also comprises a sector section communication fault, when the fault occurs, the server displays the fault report of the whole sector section, and the specific method for diagnosing the fault comprises the following steps:
the method comprises the steps of firstly, checking whether the power supply of an electric cabinet corresponding to each fan-shaped section is normal or not, and checking whether the communication between a controller corresponding to each fan-shaped section and a server is normal or not when the power supply of the electric cabinet is normal.
Preferably, the method for checking whether the communication between the controller and the server corresponding to each segment is normal specifically includes:
detecting from the segment 1, powering off the electric control box corresponding to the segment 1, then disconnecting the 2, 4 and 6 terminal wires on the X8 terminal row in the electric control box corresponding to the segment 1, and picking up the seal pins on the 7 and 8 terminals to separate the segment 1 from the rest segments;
electrifying the electric control box corresponding to the segment 1, displaying that the segment 1 is green on the server, judging that the CAN-bus connection between the electric control box of the segment 1 and the server is normal, displaying that the segment 1 is red on the server, and judging that the CAN-bus connection between the electric control box of the segment 1 and the server is in fault;
and by analogy, whether CAN-bus connection between the electric control boxes and the servers of the other fan-shaped sections breaks down or not is detected in sequence.
By the method, an operator can diagnose the reason of the communication fault of the sector section too fast so as to solve the fault as soon as possible.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. The method for diagnosing the faults of the sector section of the tension leveler is characterized in that the faults of the sector section of the tension leveler comprise lifting faults of an oil cylinder, and the method for diagnosing the lifting faults of the oil cylinder comprises the following steps:
checking whether control equipment corresponding to the oil cylinder works normally, wherein the control equipment comprises an electric cabinet and a remote upper computer, and checking whether the pressure of a hydraulic system of the sector section is enough, and when the pressures of the electric cabinet, the remote upper computer and the hydraulic system are normal, checking whether the working voltage in the electric cabinet is normal working voltage, and checking whether each relay and a corresponding safety in the electric cabinet are intact;
when the voltage in the electric cabinet and the relay and the safety in the electric cabinet work normally, detecting whether a first connecting cable between the electric cabinet and the fan-shaped section is connected perfectly, and then measuring whether each electromagnetic valve controlled by the electric cabinet is connected perfectly;
and detecting whether a valve table and an oil way of the hydraulic system of the sector section have problems or not when the first connecting cable between the electric control box and the sector section is connected perfectly and each electromagnetic valve controlled by the electric control box works normally.
2. The method for diagnosing the fault of the sector section of the withdrawal and straightening unit as claimed in claim 1, wherein the method comprises the following steps: the method for checking whether the control equipment works normally specifically comprises the following steps:
whether the remote upper computer gives an emergency stop or not is checked, when the remote upper computer gives an emergency stop, the operation mode of the electric cabinet corresponding to the remote upper computer is converted into a local mode, then a lifting button on a control panel of the electric cabinet is clicked for 1-2 times, and then the operation mode of the electric cabinet is converted into a remote mode to be recovered;
and checking whether the electric cabinet gives an emergency stop or not, when the electric cabinet gives an emergency stop, converting the operation mode of the electric cabinet into a verification mode, inching a manual lifting button on a control panel of the electric cabinet, checking whether each electromagnetic valve controlled by the electric cabinet is electrified or not, detecting whether a valve table and an oil circuit of the hydraulic system of the fan-shaped section corresponding to the electric cabinet have problems or not when each electromagnetic valve controlled by the electric cabinet is electrified normally, and measuring whether each electromagnetic valve controlled by the electric cabinet is intact or not when each electromagnetic valve controlled by the electric cabinet is electrified abnormally.
3. The method for diagnosing the fault of the sector section of the withdrawal and straightening unit as claimed in claim 2, wherein the method comprises the following steps: the method for measuring whether each electromagnetic valve controlled by the electric cabinet is intact specifically comprises the following steps:
connecting a first meter pen of a multimeter to the ground, connecting a second meter pen of the multimeter to second terminals under the relays in the electric control box, observing whether the resistance measured by the multimeter is between 22.4 and 22.6 omega, judging that the electromagnetic valve works normally when the resistance displayed by the multimeter is between 22.4 and 22.6 omega, and judging that the electromagnetic valve has faults when the resistance displayed by the multimeter is not between 22.4 and 22.6 omega.
4. The method for diagnosing the fault of the sector section of the withdrawal and straightening unit as claimed in claim 1, wherein the method comprises the following steps: the method for detecting whether the first connecting cable between the electric cabinet and the fan-shaped section is connected perfectly or not specifically comprises the following steps:
and taking down the plug of the first connecting cable from the fan-shaped section, then inserting the plug of the first connecting cable into the fan-shaped section with a good state, judging that the first connecting cable is good when the connected state is normal, and judging that the first connecting cable breaks down when the connected state is abnormal.
5. The method for diagnosing the fault of the sector section of the withdrawal and straightening unit as claimed in claim 1, wherein the method comprises the following steps: the method for checking whether each relay in the electric cabinet is intact specifically comprises the following steps:
converting the selection mode of the electric cabinet into a manual state, and driving the relay to be closed by pressing an ascending or descending button on a control panel of the electric cabinet;
and using a universal meter to check whether voltage output exists at the lower end terminal of each relay, judging that the relay is intact when the voltage output exists at the lower end terminal of the relay, and judging that the relay breaks down when the voltage output does not exist at the lower end terminal of the relay.
6. The method for diagnosing the fault of the sector section of the withdrawal and straightening machine as recited in any one of claims 1 to 5, wherein: determining position numbers of four oil cylinders on the fan-shaped section according to a pouring direction, specifically, two oil cylinders on the left side of the pouring direction are respectively a 1# oil cylinder and a 3# oil cylinder, two oil cylinders on the right side are respectively a 2# oil cylinder and a 4# oil cylinder, position sensors corresponding to each oil cylinder are respectively connected in series through a second connecting cable, and the series connection mode of the four oil cylinder position sensors is as follows:
the 2# oil cylinder position sensor is connected between the 4# oil cylinder position sensor and the 1# oil cylinder position sensor in series, the 1# oil cylinder position sensor is connected between the 2# oil cylinder position sensor and the 3# oil cylinder position sensor in series, the 3# oil cylinder position sensor is connected with a terminal resistor, and the 4# oil cylinder position sensor is connected with the electric cabinet through another second connecting cable;
the fault of the sector section of the tension leveler comprises that the electric cabinet cannot identify the corresponding oil cylinder position sensor, and the method for diagnosing that the electric cabinet cannot identify the corresponding oil cylinder position sensor specifically comprises the following steps:
checking whether a fuse on an X9 terminal row in the electric cabinet is intact, when the fuse on the X9 terminal row in the electric cabinet is intact, measuring whether a resistance value between 1-2 terminals of the X9 terminal row is between 120 Ω -140 Ω, when the resistance value between 1-2 terminals of the X9 terminal row is between 120 Ω -140 Ω, detecting whether a second connecting cable between each position sensor of the fan-shaped section corresponding to the electric cabinet is intact, and when the second connecting cable between each position sensor is intact, checking whether the terminal resistance plug connected with the 3# oil cylinder is connected or the terminal resistance connected with the 3# oil cylinder is replaced.
7. The method for diagnosing the fault of the sector section of the withdrawal and straightening unit as claimed in claim 6, wherein the method comprises the following steps: the method for checking the quality of the insurance in the electric cabinet specifically comprises the following steps:
and measuring the on-off condition of the fuse by using a multimeter.
8. The method for diagnosing the fault of the sector section of the withdrawal and straightening unit as claimed in claim 6, wherein the method comprises the following steps: the method for detecting whether the second connecting cable between the position sensors of the fan-shaped section corresponding to the electric cabinet is intact specifically comprises the following steps:
cutting off a power supply of the electric cabinet, removing second connecting cables among the position sensors of the oil cylinders, and only reserving second connecting cables electrically connected between the 4# oil cylinder position sensor and the electric cabinet;
the terminal resistor is taken down from the 3# oil cylinder position sensor and is arranged on the 4# oil cylinder position sensor;
switching on a power supply of the electric cabinet, checking whether the electric cabinet can identify the 4# oil cylinder position sensor or not, judging that a second connecting cable electrically connected between the 4# oil cylinder position sensor and the electric cabinet is normal when the electric cabinet can identify the 4# oil cylinder position sensor, and judging that the second connecting cable electrically connected between the 4# oil cylinder position sensor and the electric cabinet has a fault when the electric cabinet cannot identify the 4# oil cylinder position sensor;
when the electric cabinet can identify the 4# oil cylinder position sensor, the power supply of the electric cabinet is cut off again, then a terminal resistor is taken down from the 4# oil cylinder position sensor and is installed on the 2# oil cylinder position sensor, then the second connecting cable between the 4# oil cylinder position sensor and the 2# oil cylinder position sensor is connected, finally the power supply of the electric cabinet is connected, whether the 4# oil cylinder position sensor and the 2# oil cylinder position sensor can be identified by the electric cabinet or not is checked, when the 4# oil cylinder position sensor and the 2# oil cylinder position sensor can be identified by the electric cabinet, the second connecting cable between the 4# oil cylinder position sensor and the 2# oil cylinder position sensor is judged to be normal, and when the 4# oil cylinder position sensor and the 2# oil cylinder position sensor cannot be identified by the electric cabinet, judging that a second connecting cable between the 4# oil cylinder position sensor and the 2# oil cylinder position sensor has a fault;
and in the same way, whether the second connecting cable between the 2# oil cylinder position sensor and the 1# oil cylinder position sensor and the second connecting cable between the 1# oil cylinder position sensor and the 3# oil cylinder position sensor have faults or not is detected respectively.
9. The method for diagnosing the fault of the sector section of the withdrawal and straightening machine as recited in any one of claims 1 to 5, wherein: the fault of the sector section of the tension leveler also comprises a communication fault of the sector section, and the method for diagnosing the communication fault of the sector section specifically comprises the following steps:
firstly, whether the power supply of the electric control box corresponding to each sector section is normal is checked, and then whether the communication between the electric control box corresponding to each sector section and the server is normal is checked.
10. The method for diagnosing the fault of the sector section of the withdrawal and straightening unit as claimed in claim 9, wherein the method comprises the following steps:
the segment comprises 1 segment of segment, 2 segment of segment and 3 segment of segment … … 14 segment which are arranged in sequence;
the method for checking whether the communication between the electric control box corresponding to each sector and the server is normal specifically comprises the following steps:
detecting from the segment 1, powering off the electric cabinet corresponding to the segment 1, then disconnecting the 2, 4 and 6 terminal wires on the X8 terminal row in the electric cabinet, and picking up the seal pins on the 7 and 8 terminals to separate the segment 1 from the rest segments;
electrifying the electric control box corresponding to the segment 1, displaying that the segment 1 is green on the server, judging that the CAN-bus connection between the electric control box of the segment 1 and the server is normal, and displaying that the segment 1 is red on the server, judging that the CAN-bus connection between the electric control box of the segment 1 and the server is in fault;
and by analogy, whether CAN-bus connection between the electric control boxes of the other fan-shaped sections and the server has faults or not is detected in sequence.
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