CN209906157U - Abnormal power-loss protection fault simulation device for motor stator of crane - Google Patents
Abnormal power-loss protection fault simulation device for motor stator of crane Download PDFInfo
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- CN209906157U CN209906157U CN201920294050.3U CN201920294050U CN209906157U CN 209906157 U CN209906157 U CN 209906157U CN 201920294050 U CN201920294050 U CN 201920294050U CN 209906157 U CN209906157 U CN 209906157U
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Abstract
The utility model discloses a crane motor stator abnormal power-off protection fault simulation device, which comprises a singlechip, a driving unit and an execution unit which are connected in sequence, wherein the execution unit is respectively connected with a power loop and a control loop of a crane and is used for simulating the abnormal power-off condition of the crane motor stator caused by different fault reasons; the single chip microcomputer is used for receiving and processing data and sending control signals to the execution unit; the driving unit is used for converting the control signal of the singlechip into the control signal of the execution unit. The utility model discloses a singlechip is according to the fault reason of difference for execution unit send control signal for carry out hoist fault simulation, can provide a technological means for accident identification and accident reason analysis.
Description
Technical Field
The utility model relates to a hoist fault simulation technical field, concretely relates to hoist motor stator loses electric protection fault analogue means unusually.
Background
The technical scheme includes that the method comprises the following steps of ' notice on related opinions about the renovation work of metallurgical hoisting machinery ' (No. 375 text) issued by the special arrangement office of the State quality inspection Bureau, TSG Q0002-2008 ' hoisting machinery safety technology supervision rules-bridge cranes ', TSG Q7016-2016 ' hoisting machinery installation and transformation major maintenance supervision and inspection rules ' and GB6067.1-2010 ' part 1 of hoisting machinery safety rules: general rules all provide relevant requirements for abnormal power loss protection of a crane motor stator: the crane should have a forward and reverse contactor fault protection function to prevent the motor from being de-energized while the brake is still energized, resulting in stalling of the motor and falling of heavy objects. Namely, when the forward contactor and the reverse contactor fail to cause the motor to be out of control, the brake should be immediately switched on.
A bridge (door) type crane, in particular to a bridge (door) type crane for hoisting molten metal and other dangerous goods, must be provided with a motor stator abnormal power-off protection device to prevent a heavy object falling accident caused by the failure of a forward contactor and a reverse contactor of a hoisting mechanism and the failure of a brake to power off and switch on in time. However, no detection instrument for simulating the abnormal power loss protection function of the stator of the crane motor is available in the current domestic and foreign markets, the field detection is still in a simple manual verification stage, and the defects of dependence on the subjective experience of inspectors, low efficiency, low automation degree, easy omission of hidden dangers and the like exist. Therefore, the development of a detection system for safely simulating the abnormal power failure accident of the crane stator is necessary, so that the complexity of field detection operation can be greatly reduced, the automation degree of detection is improved, the efficiency and the hidden danger discovery rate are improved, the system can be used for hoisting machinery installation, debugging, maintenance and detection units, in addition, the classification simulation function can be used for simulating the accident, and a technical means can be provided for accident identification and accident reason analysis. Therefore, the research of the method and the development of instruments and equipment thereof have important significance for improving the level of scientific and technological equipment in the quality inspection industry and preventing safety accidents of the crane.
Disclosure of Invention
The utility model provides a not enough to prior art, the utility model provides a hoist motor stator loses electric protection fault analogue means unusually for hoist simulation accident provides a technological means for accident identification and accident reason analysis.
The content of the utility model is as follows:
a crane motor stator abnormal power loss protection fault simulation device comprises a single chip microcomputer, a driving unit and an execution unit which are sequentially connected, wherein the execution unit is respectively connected with a power loop and a control loop of a crane and is used for simulating the abnormal power loss condition of a crane motor stator caused by different fault reasons;
the single chip microcomputer is used for receiving and processing data and sending control signals to the execution unit;
the driving unit is used for converting the control signal of the singlechip into the control signal of the execution unit and driving the execution unit to act.
Preferably, the power circuit comprises a rising contactor, a falling contactor, a brake contactor and a motor, the control circuit comprises a gear switching unit, one end of a main contact KS1 of the rising contactor and one end of a main contact KX1 of the falling contactor are respectively connected with a power supply, the other end of the main contact KS1 and the other end of the main contact KX1 are respectively connected with the motor, and the connection nodes are a node A and a node B respectively;
one end of a normally closed auxiliary contact KX2 of the descending contactor is connected with the gear switching unit, the other end of the normally closed auxiliary contact KX2 is connected with a coil KS of the ascending contactor, the connection node is a node C, one end of a normally closed auxiliary contact KS2 of the ascending contactor is connected with the gear switching unit, the other end of the normally closed auxiliary contact KS2 is connected with the coil KX of the descending contactor, and the connection node is a node D;
one end of the normally open auxiliary contact KS3 of the ascending contactor, one end of the normally open auxiliary contact KX3 of the descending contactor and one end of the normally open auxiliary contact KZD3 of the brake contactor are connected in parallel with a power supply, and the other end of the normally open auxiliary contact KZD is connected with a coil KZD of the brake contactor through a gear switching unit.
Preferably, the execution unit comprises a three-phase contactor K1, a three-phase contactor K2, a relay J1 and a relay J2, wherein a main contact of the three-phase contactor K1 is connected in series with the node A, a main contact of the three-phase contactor K2 is connected in series with the node B, a main contact of the relay J1 is connected in series with the node C, and a main contact of the relay J2 is connected in series with the node D.
Preferably, the single chip microcomputer is further connected with an RS485 communication interface, and the RS485 communication interface is used for being connected with a control display system of an external device.
Preferably, the driving unit comprises a photoelectric isolation device and a darlington tube driver U4 which are sequentially connected, the input end of the photoelectric isolation device is connected with the single chip microcomputer, and the output end of the darlington tube driver U4 is connected with the execution unit.
The utility model has the advantages that: the utility model discloses a singlechip is according to the fault reason of difference for execution unit send control signal for carry out hoist fault simulation, can provide a technological means for accident identification and accident reason analysis.
Drawings
FIG. 1 is a schematic block diagram of an embodiment of the present invention;
FIG. 2 is a wiring diagram illustrating the use of an embodiment of the present invention;
fig. 3 is a schematic diagram of a power circuit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a control loop circuit according to an embodiment of the present invention;
fig. 5 is a schematic circuit diagram of a driving unit according to an embodiment of the present invention.
Detailed Description
The foregoing description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following preferred embodiments are described in detail with reference to the accompanying drawings.
Referring to fig. 1, the abnormal power loss protection fault simulation device for the motor stator of the crane disclosed in this embodiment includes a single chip microcomputer 1, a driving unit 2 and an execution unit 3, which are connected in sequence, wherein the execution unit 3 is connected with a power loop and a control loop of the crane respectively, and is used for simulating abnormal power loss of the motor stator of the crane caused by different fault reasons;
the single chip microcomputer 1 is further connected with an RS485 communication interface, the RS485 communication interface is used for being connected with a control display system 5 of an external device, the control display system 5 adopts an electronic computer, the control display system 5 is further connected with a current detection system, and the single chip microcomputer 1 is used for receiving and processing data sent by external devices, for example, receiving analog data of different fault types from the control display system 5, converting the analog data into control signals, and sending the control signals to the execution unit 3; the driving unit 2 is used for converting the control signal of the singlechip 1 into the control signal of the execution unit 3 and driving the execution unit 3 to act.
Referring to fig. 2-4, the power circuit includes a rising contactor, a falling contactor, a brake contactor and a motor, the control circuit includes a gear switching unit 6, one end of a main contact KS1 of the rising contactor and one end of a main contact KX1 of the falling contactor are respectively connected with a power supply, the other end of the main contact KS1 and the other end of the main contact KX1 are respectively connected with the motor, and connection nodes are respectively a node a and a node B;
one end of a normally closed auxiliary contact KX2 of the descending contactor is connected with the gear switching unit 6, the other end of the normally closed auxiliary contact KX2 is connected with a coil KS of the ascending contactor, the connection node is a node C, one end of a normally closed auxiliary contact KS2 of the ascending contactor is connected with the gear switching unit 6, the other end of the normally closed auxiliary contact KS2 is connected with the coil KX of the descending contactor, and the connection node is a node D, so that an interlocking circuit is formed, and circuit abnormality caused by misoperation is prevented;
one end of the normally open auxiliary contact KS3 of the ascending contactor, one end of the normally open auxiliary contact KX3 of the descending contactor and one end of the normally open auxiliary contact KZD3 of the brake contactor are connected in parallel with a power supply, and the other end of the normally open auxiliary contact KZD is connected with a brake contactor coil KZD through the gear switching unit 6.
Referring to fig. 5, the driving unit 2 includes a photoelectric isolation device 21 and a darlington driver U4 sequentially connected to each other, the photoelectric isolation device 21 is a TLP521-2 chip, an input end of the photoelectric isolation device 21 is connected to the single chip microcomputer 1, the darlington driver U4 is a ULN2803 chip, and an output end of the darlington driver U4 is connected to the execution unit 3.
Referring to fig. 2-4, the execution unit 3 includes a three-phase contactor K1, a three-phase contactor K2, a relay J1 and a relay J2, when fault simulation is performed, a main contact of the three-phase contactor K1 is connected in series to the node a, a main contact of the three-phase contactor K2 is connected in series to the node B, a main contact of the relay J1 is connected in series to the node C, a main contact of the relay J2 is connected in series to the node D, a current detection system is connected to a control circuit of a brake contactor of the crane, and the single chip microcomputer 1 controls the three-phase contactor K1, the three-phase contactor K2, the relay J1 and the relay J2 to be switched on or switched off according to different fault relations, so as to perform fault. The fault type comprises at least one of a fault of a control loop of the ascending contactor, a fault of a power loop of the ascending contactor, a fault of a control loop of the descending contactor, a fault of a power loop of the descending contactor, a fault of both the power loop and the control loop of the ascending contactor, and a fault of both the power loop and the control loop of the descending contactor. When the three-phase contactor K1 is open-circuit, the three-phase contactor K1 is used for simulating the fault of a power circuit of a rising contactor; when the three-phase contactor K2 is open, the fault simulation device is used for simulating the fault of a power circuit of the descending contactor; when the relay J1 is opened, the fault simulation device is used for simulating the fault of a control loop of a rising contactor, when the relay J2 is opened, the fault simulation device is used for simulating the fault of a control loop of a falling contactor, and when the three-phase contactor K1 and the relay J1 are opened simultaneously, the fault simulation device is used for simulating the fault of a power loop and a control loop of the rising contactor simultaneously; when the three-phase contactor K2 and the relay J2 are simultaneously opened, the three-phase contactor K2 and the relay J2 are used for simulating the simultaneous failure of a power circuit and a control circuit of a descending contactor.
The above description is only a preferred embodiment of the present invention, and the present invention is not limited to the above embodiment, and the technical effects of the present invention can be achieved by the same means, which all belong to the protection scope of the present invention. The technical solution and/or the embodiments of the invention may be subject to various modifications and variations within the scope of the invention.
Claims (5)
1. The utility model provides a hoist motor stator unusual power-off protection fault analogue means which characterized in that: the system comprises a singlechip (1), a driving unit (2) and an execution unit (3) which are sequentially connected, wherein the execution unit (3) is respectively connected with a power loop and a control loop of the crane and is used for simulating abnormal power loss conditions of a motor stator of the crane caused by different fault reasons;
the single chip microcomputer (1) is used for receiving and processing data and sending a control signal to the execution unit (3);
the driving unit (2) is used for converting the control signal of the singlechip (1) into the control signal of the execution unit (3) and driving the execution unit (3) to act.
2. The abnormal power loss protection fault simulation device for the motor stator of the crane as claimed in claim 1, wherein: the power circuit comprises a rising contactor, a falling contactor, a brake contactor and a motor, the control circuit comprises a gear switching unit (6), one end of a main contact KS1 of the rising contactor and one end of a main contact KX1 of the falling contactor are respectively connected with a power supply, the other end of the main contact KS1 and the other end of the main contact KX1 are respectively connected with the motor, and the connection nodes are a node A and a node B respectively;
one end of a normally closed auxiliary contact KX2 of the descending contactor is connected with the gear switching unit (6), the other end of the normally closed auxiliary contact KX2 is connected with a coil KS of the ascending contactor, the connection node is a node C, one end of a normally closed auxiliary contact KS2 of the ascending contactor is connected with the gear switching unit (6), the other end of the normally closed auxiliary contact KS2 is connected with the coil KX of the descending contactor, and the connection node is a node D;
one end of the normally open auxiliary contact KS3 of the ascending contactor, one end of the normally open auxiliary contact KX3 of the descending contactor and one end of the normally open auxiliary contact KZD3 of the brake contactor are connected in parallel with a power supply, and the other end of the normally open auxiliary contact KZD is connected with a coil KZD of the brake contactor through a gear switching unit (6).
3. The abnormal power loss protection fault simulation device for the motor stator of the crane as claimed in claim 2, wherein: the execution unit (3) comprises a three-phase contactor K1, a three-phase contactor K2, a relay J1 and a relay J2, wherein a main contact of the three-phase contactor K1 is connected in series with the node A, a main contact of the three-phase contactor K2 is connected in series with the node B, a main contact of the relay J1 is connected in series with the node C, and a main contact of the relay J2 is connected in series with the node D.
4. The abnormal power loss protection fault simulation device for the motor stator of the crane as claimed in claim 1, wherein: the single chip microcomputer (1) is further connected with an RS485 communication interface, and the RS485 communication interface is used for being connected with a control display system (5) of an external device.
5. The abnormal power loss protection fault simulation device for the motor stator of the crane as claimed in claim 1, wherein: drive unit (2) include with optoelectronic isolation device (21) and the darlington pipe driver U4 that connects gradually, optoelectronic isolation device's (21) input with singlechip (1) is connected, darlington pipe driver U4's output with execution unit (3) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294050.3U CN209906157U (en) | 2019-03-08 | 2019-03-08 | Abnormal power-loss protection fault simulation device for motor stator of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920294050.3U CN209906157U (en) | 2019-03-08 | 2019-03-08 | Abnormal power-loss protection fault simulation device for motor stator of crane |
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| Publication Number | Publication Date |
|---|---|
| CN209906157U true CN209906157U (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920294050.3U Active CN209906157U (en) | 2019-03-08 | 2019-03-08 | Abnormal power-loss protection fault simulation device for motor stator of crane |
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| CN (1) | CN209906157U (en) |
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- 2019-03-08 CN CN201920294050.3U patent/CN209906157U/en active Active
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Assignee: ZHUHAI ANYES TECHNOLOGY Co.,Ltd. Assignor: GUANGDONG INSPECTION AND Research Institute OF SPECIAL EQUIPMENT ZHUHAI INSPECTION INSTITUTE Contract record no.: X2021980017429 Denomination of utility model: A fault simulation device for abnormal power loss protection of crane motor stator Granted publication date: 20200107 License type: Common License Record date: 20220111 |