CN115973910B - Mobile power supply device and power supply method for quay crane - Google Patents
Mobile power supply device and power supply method for quay crane Download PDFInfo
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- CN115973910B CN115973910B CN202310260485.7A CN202310260485A CN115973910B CN 115973910 B CN115973910 B CN 115973910B CN 202310260485 A CN202310260485 A CN 202310260485A CN 115973910 B CN115973910 B CN 115973910B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
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- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The invention provides a shore bridge movable power supply device and a power supply method, wherein a cart cable reel motor drives a cart cable reel to rotate, a lifting appliance cable reel motor drives a lifting appliance cable reel to rotate, and a towing motor drives an electric towing machine to move; the cart cable reel is wound with a cart cable, the sling cable reel is wound with a sling cable, and the electric towing rope is connected with a towing rope cable; the movable power supply control cabinet sends instructions to the cart cable reel motor, the lifting appliance cable reel motor and the towing motor; the cart cable reel motor and the lifting appliance cable reel motor do not work simultaneously, and share a main frequency converter, so that main control components are saved; the volume and cost are reduced.
Description
Technical Field
The invention relates to the technical field of shore bridge mobile power supply, in particular to a shore bridge mobile power supply device and a power supply method.
Background
According to the characteristics of the container shore bridge, corresponding mobile power supply equipment is needed when the cart, the trolley and the lifting appliance move, and the cart cable reel device is needed to supply power when the cart moves left and right; when the trolley moves forwards and backwards, the electric traction device is required to supply power; when the container lifting appliance moves up and down, the lifting appliance cable reel device is required to supply power.
Publication No.: CN 115159359A, name: a container gantry crane is disclosed, wherein a cart, a trolley and a lifting appliance in the crane are respectively required to be designed into three independent mobile power supply control systems in the use process, an electric control cabinet is independently arranged in an electric room, the three independent control systems comprise three independent low-voltage control elements, a frequency converter and a PLC (programmable logic controller) control element, the electric room needs peripheral space, and the electric room needs additional space, so that the whole power supply device is complex, the cost is high, and the failure rate is high.
Therefore, there is a need for a shore bridge mobile power supply device with smaller volume and more convenient mobile operation.
Disclosure of Invention
In view of the above, the invention provides a shore bridge mobile power supply device and a power supply method for integrating three independent control cabinets into one comprehensive control and realizing power supply to a cart, a trolley and a lifting appliance.
The technical scheme of the invention is realized as follows: in one aspect, the invention provides a shore bridge mobile power supply device, which comprises a mobile power supply control cabinet, a cart cable reel motor, a lifting appliance cable reel motor, a cart cable reel, a lifting appliance cable reel and an upper computer PLC, wherein,
the cart cable reel motor drives the cart cable reel to rotate, and the lifting appliance cable reel motor drives the lifting appliance cable reel to rotate;
the cart cable reel is wound with a cart cable, and the lifting appliance cable reel is wound with a lifting appliance cable;
the mobile power supply control cabinet comprises a comprehensive control PLC;
the upper computer PLC is in communication connection with the comprehensive control PLC, drives the cart cable reel motor to start through the comprehensive control PLC, and the cart cable reel rotates clockwise or anticlockwise and completes winding and unwinding of the cart cable;
the upper computer PLC drives the lifting appliance cable reel motor to act through the comprehensive control PLC, and drives the lifting appliance cable reel to rotate clockwise or anticlockwise and complete the winding and unwinding of the lifting appliance cable.
On the basis of the technical scheme, preferably, the mobile power supply control cabinet further comprises a main frequency converter, and the comprehensive control PLC switches the starting or stopping state of the cart cable reel motor and the lifting appliance cable reel motor through the main frequency converter.
Preferably, the mobile power supply control cabinet further comprises a cart cable reel motor contactor and a lifting appliance cable reel motor contactor, wherein the cart cable reel motor contactor is arranged between the main frequency converter and the cart cable reel motor, the lifting appliance cable reel motor contactor is arranged between the main frequency converter and the lifting appliance cable reel motor, and the cart cable reel motor contactor and the lifting appliance cable reel motor contactor are used for switching the starting state or the stopping state of the cart cable reel motor and the lifting appliance cable reel motor.
Preferably, the electric towing machine also comprises a towing body, a towing motor, an electric towing and a towing cable; the electric festoon is arranged on the festoon body and is connected with the festoon body in a sliding or rolling way; the festoon motor is fixedly arranged on the electric festoon, and the movable end of the festoon motor is meshed with the electric festoon; the towing cable sequentially passes through one end of the electric towing far away from the towing body; the towing motor is used for driving the electric towing to move along the towing body; the upper computer PLC drives the towing motor to drive the electric towing along the towing body through the comprehensive control PLC, and the electric towing cable moves along the extending direction of the towing body; one end of the towing body is arranged on the land side, and the other end extends towards the sea side.
Further preferably, the festoon motor comprises a first festoon driving motor, a second festoon driving motor and a third festoon driving motor, the electric festoon comprises an electric festoon one, an electric festoon two and an electric festoon three, the first festoon driving motor drags the electric festoon one to move, the second festoon driving motor drags the electric festoon two to move, and the third festoon driving motor drags the electric festoon three to move;
the festoon cable comprises a first festoon cable, a second festoon cable and a third festoon cable, wherein the first festoon cable is arranged on the first electric festoon, the second festoon cable is arranged on the second electric festoon, the third festoon cable is arranged on the third electric festoon, and the first festoon cable, the second festoon cable and the third festoon cable are connected in sequence in an end-to-end mode.
Still more preferably, the towing body is provided with a first land side limiting part, a second land side limiting part, a third land side limiting part, a first sea side limiting part, a second sea side limiting part and a third sea side limiting part at intervals in sequence; the electric towing one is located between the first land side limiting part and the first sea side limiting part along the moving range of the towing body; the electric towing second is positioned between the second land side limiting part and the second sea side limiting part along the moving range of the towing body; the electric towing three is located between the third land side limiting part and the third sea side limiting part along the moving range of the towing body.
Still further preferably, the mobile power supply control cabinet further comprises a first festoon frequency converter, a second festoon frequency converter and a third festoon frequency converter; the comprehensive control PLC is respectively in communication connection with the first traction frequency converter, the second traction frequency converter and the third traction frequency converter;
the first towing transducer is used for driving the first towing driving motor to act, the second towing transducer is used for driving the second towing driving motor to act, and the third towing transducer is used for driving the third towing driving motor to act.
On the basis of the technical scheme, the cable guide device preferably further comprises a cable guide frame, a left overtightening proximity switch, a right overtightening proximity switch, an overtightening proximity switch and a reversing proximity switch, wherein the cart cable passes through the surface of the cable guide frame, and is in smooth transition on the surface of the cable guide frame; the left overtightening proximity switch is arranged on one side of the end part of the cable guide frame, which is close to the ground, and the right overtightening proximity switch is arranged on the other side of the end part of the cable guide frame, which is close to the ground; the cable guide frame is provided with a longitudinally through channel, and the cart cable is arranged in the channel in a penetrating way; the over-release switch and the reversing proximity switch are arranged in the channel and extend towards the radial direction of the cart cable.
Further preferably, the device further comprises a proximity switch junction box; the left overtightening proximity switch, the right overtightening proximity switch, the overtightening proximity switch and the reversing proximity switch are electrically connected with the input end of the proximity switch junction box, the output end of the proximity switch junction box is electrically connected with the comprehensive control PLC, and the comprehensive control PLC controls the left overtightening proximity switch, the right overtightening proximity switch, the overtightening proximity switch and the reversing proximity switch.
On the other hand, the invention also provides a power supply method, which comprises the shore bridge mobile power supply device and further comprises the following steps:
s1: cart cable reel operation:
the upper computer PLC sends a cart cable reel running instruction to the comprehensive control PLC, the comprehensive control PLC controls the main frequency converter to work, the main frequency converter controls the cart cable reel motor contactor to be attracted, the cart cable reel motor is started at the moment, and the cart cable reel rotates along with the cart cable reel motor, so that retraction and release of a cart cable are realized;
when the left overtightening proximity switch, the right overtightening proximity switch or the overtightening proximity switch is started, the proximity switch junction box transmits signals to the comprehensive control PLC, the comprehensive control PLC transmits shutdown signals to the upper computer PLC, and the upper computer PLC sends shutdown instructions to the comprehensive control PLC;
s2: the hanger cable reel operates:
the upper computer PLC sends a lifting appliance cable reel operation instruction to the comprehensive control PLC, the comprehensive control PLC controls the main frequency converter to work, the main frequency converter controls the lifting appliance cable reel motor contactor to be attracted, the lifting appliance cable reel motor is started at the moment, and the lifting appliance cable reel rotates along with the lifting appliance cable reel motor, so that the winding and unwinding of lifting appliance cables are realized;
s3: electric towing operation:
the upper computer PLC sends an operation instruction to the comprehensive control PLC, and the comprehensive control PLC controls the first traction frequency converter, the second traction frequency converter and the third traction frequency converter to work; the first towing transducer drives the first towing driving motor to act, the second towing transducer drives the second towing driving motor to act, and the third towing transducer drives the third towing driving motor to act; the first festoon driving motor, the second festoon driving motor and the third festoon driving motor run interactively, the first festoon driving motor drives the electric festoon to drag the first festoon cable, the second festoon driving motor drives the electric festoon to drag the second festoon cable, and the third festoon driving motor drives the electric festoon to drag the third festoon cable.
Compared with the prior art, the invention has the following beneficial effects:
(1) The cart cable reel motor and the lifting appliance cable reel motor do not work simultaneously, and share a main frequency converter, so that main control components are saved; the volume and the cost are reduced;
(2) The main frequency converter, the first festoon frequency converter, the second festoon frequency converter and the third festoon frequency converter share one power cabinet for power supply, so that a complex circuit is avoided, and the cost is reduced;
(3) The electrification degree is higher, parts are reduced, and the overhaul and maintenance cost is reduced;
(4) The main frequency converter controls the cart cable reel motor and the lifting appliance cable reel motor, so that the impact force of the cart cable and the lifting appliance cable is effectively reduced;
(5) The cart cable reel, the lifting appliance cable reel and the electric towing rope can share 1 set of PLC for comprehensive control, replaces the original 3 sets of PLC independent control structure, simplifies the program design and reduces the maintenance cost;
(6) The main frequency converter corresponding to the cart cable reel and the lifting appliance cable reel shares one reactor, so that two independent reactors are replaced, and the installation space is reduced;
(7) The main frequency converter corresponding to the cart cable reel and the lifting appliance cable reel shares one braking resistor, replaces two independent resistors, reduces the external installation space and weight, and reduces the maintenance cost.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a mobile power supply device for a quay crane according to the present invention;
FIG. 2 is a circuit diagram of a mobile power supply control cabinet and an upper computer PLC of the invention;
FIG. 3 is a schematic diagram of the structure of the electric tow, tow motor and tow cable of the present invention;
fig. 4 is a schematic diagram of a local structure of a shore bridge mobile power supply device according to the present invention.
Description of the embodiments
The following description of the embodiments of the present invention will clearly and fully describe the technical aspects of the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
As shown in fig. 1 to 4, a shore bridge mobile power supply device comprises a mobile power supply control cabinet 1, a cart cable reel 33, a lifting appliance cable reel 34, an electric towing rope 35, an upper computer PLC18, a cart cable reel motor 5, a lifting appliance cable reel motor 9, a cart on-site operation box 24, a lifting appliance on-site operation box 25 and a lifting appliance cable reel tension detection device 26.
As shown in fig. 1 and 2, the upper computer PLC18 controls the mobile power supply control cabinet 1, and transmits an instruction to the mobile power supply control cabinet 1, and the upper computer PLC18 feeds back the state of the cart cable reel 33, the spreader cable reel 34, or the electric traction order 35 through the mobile power supply control cabinet 1.
The cart on-site operation box 24 controls the cart cable reel motor 5 to start and stop, the cart on-site operation box 24 can be used for controlling the cart cable reel motor 5 when an emergency occurs, the lifting appliance on-site operation box 25 and the lifting appliance cable reel motor 9 are started and stopped, and the lifting appliance on-site operation box 25 can be used for controlling the lifting appliance cable reel motor 9 when an emergency occurs.
The mobile power supply control cabinet 1 comprises a main frequency converter 2, a cart cable reel motor contactor 3, a cart cable reel motor coding contactor 4, a cart cable reel motor coder 6, a lifting appliance cable reel motor coder 10, a lifting appliance cable reel motor contactor 7, a lifting appliance cable reel motor coding contactor 8, a first towing frequency converter 11, a second towing frequency converter 12, a third towing frequency converter 13 and a comprehensive control PLC17.
The integrated control PLC17 controls the main frequency converter 2, the first traction frequency converter 11, the second traction frequency converter 12 and the third traction frequency converter 13 via the fieldbus.
The spreader cable reel 34 comprises a spreader cable reel motor 9 comprising a first spreader drive motor 14, a second spreader drive motor 15 and a third spreader drive motor 16.
The cart cable reel motor 5 drives the cart cable reel 33 to rotate, the cart cable 37 is wound on the cart cable reel 33, and the cart cable 37 wound on the cart cable reel 33 is wound and unwound through the rotation of the cart cable reel 33 to supply power to the cart.
The main converter 2 controls the on-off of the cart cable reel motor contactor 3 and the cart cable reel motor coding contactor 4, the main converter 2 controls the start and stop of the cart cable reel motor 5 by controlling the on-off of the cart cable reel motor contactor 3, the main converter 2 controls the cart cable reel motor coder 6 by controlling the cart cable reel motor coding contactor 4, and the main converter 2 realizes closed-loop vector control on the cart cable reel motor 5 by controlling the cart cable reel motor coder 6.
In fig. 2, the same reactor 100 is shared between the main inverter 2 and either the carriage cable reel motor contactor 3 or the spreader cable reel motor contactor 7. Therefore, two independent reactors are not needed, and the installation space in the cabinet is saved. A reactor 100 is correspondingly arranged between the first, second or third festoon frequency converter 11, 12 or 13 and the corresponding first, second or third festoon drive motor 14, 15 or 16.
In addition, the main inverter 2, the first traction inverter 11, the second traction inverter 12, or the third traction inverter 13 are respectively connected with a brake resistor 200; the main frequency converter 2 corresponding to the cart cable reel 33 and the sling cable reel 34 shares one brake resistor 200, and two independent resistors are not needed, so that the installation space and cost in the cabinet can be further saved.
The lifting appliance cable reel motor 9 drives the lifting appliance cable reel 34 to rotate, the lifting appliance cable 38 is wound on the lifting appliance cable reel 34, and the lifting appliance cable 38 wound on the lifting appliance cable reel 34 is wound and unwound through rotation of the lifting appliance cable reel 34 to supply power to the container lifting appliance. The hanger cable reel tension detection device 26 is used for detecting the tension of the hanger cable 38, and the hanger cable reel tension detection device 26 transmits the tension of the hanger cable 38 to the comprehensive control PLC17 to obtain the tensioning state of the hanger cable 38.
The main frequency converter 2 controls the on-off of the lifting appliance cable reel motor contactor 7 and the lifting appliance cable reel motor coding contactor 8, the main frequency converter 2 controls the start and stop of the lifting appliance cable reel motor 9 by controlling the on-off of the lifting appliance cable reel motor switching contactor 7, and the main frequency converter 2 controls the lifting appliance cable reel motor coder 10 by controlling the lifting appliance cable reel motor coding contactor 8; the main frequency converter 2 realizes closed-loop vector control of the lifting appliance cable reel motor 9 by controlling the lifting appliance cable reel motor encoder 10.
The electric towing rope 35 is shown in fig. 1-4, and is connected with a towing rope cable 39, and the electric towing rope 35 is used for towing the towing rope cable 39 to move so as to supply power for the moving trolley.
The electric tow 35 includes an electric tow first 351, an electric tow second 352 and an electric tow third 353, the tow cable 39 includes a first tow cable 391, a second tow cable 392 and a third tow cable 393, the electric tow first 351 pulls the first tow cable 391 to slide on the track of the tow body, the electric tow second 352 pulls the second tow cable 392 to slide on the track of the tow body, and the electric tow third 353 pulls the third tow cable 393 to slide on the track of the tow body. The electric festoon 35 is arranged on the festoon body and is connected with the festoon body in a sliding or rolling way; the festoon motor is fixedly arranged on the electric festoon, the movable end of the festoon motor can be meshed with the electric festoon 35, and the festoon motor is used for driving the electric festoon 35 to move along the festoon body. The electric towing 35 drags the towing cable 39 to move along the extending direction of the towing body; one end of the towing body is arranged on the land side, and the other end extends towards the sea side. The towing body is the horizontal frame body part shown in figure 3.
The comprehensive control PLC17 controls the main frequency converter 2; the cart cable reel motor 5 is used for driving the cart cable reel 33 to rotate; the first towing driving motor 14 drags the electric towing first 351 to start, stop and move, the second towing driving motor 15 drags the electric towing second 352 to start, stop and move, and the third towing driving motor 16 drags the electric towing third 353 to start, stop and move.
In order to better limit the running position of the electric towing rope 35, a first land side limiting part 27, a second land side limiting part 28, a third land side limiting part 29, a first sea side limiting part 30, a second sea side limiting part 31 and a third sea side limiting part 32 are sequentially arranged on the towing rope body at intervals; the electric towing one 351 is located between the first land side limiting part 27 and the first sea side limiting part 30 along the moving range of the towing body; the electric tow second 352 is located between the second land side limiting part 28 and the second sea side limiting part 31 along the moving range of the tow body; the electric tow third 353 is located between the third land side limit portion 29 and the third sea side limit portion 32 along the range in which the tow body moves. Each limiting part can be a movable entity limiting structure such as a stop block arranged on the towing body to prevent the electric towing from continuing to move, or can be a proximity sensor with a detection function only, and when each electric towing reaches a specific limit position, the corresponding towing driving motor stops dragging the corresponding electric towing.
As shown in fig. 3, the scheme further comprises a cable guiding frame 36, a left overtightening proximity switch 19, a right overtightening proximity switch 20, an overtightening proximity switch 21 and a reversing proximity switch 22, wherein the cart cable 37 bypasses the cable guiding frame 36, and the left overtightening proximity switch 19, the right overtightening proximity switch 20, the overtightening proximity switch 21 and the reversing proximity switch 22 are all arranged on the cable guiding frame 36. The cable guide 36 is used for the attitude and direction of the winding of the electrical cable. The cart cable 37 passes through the surface of the cable guide frame 36, and the cart cable 37 smoothly transits on the surface of the cable guide frame 36. The left overtightening proximity switch 19 is arranged at one side of the end part of the cable guide frame 36 close to the ground, and the right overtightening proximity switch 20 is arranged at the other side of the end part of the cable guide frame 36 close to the ground; the cable guide frame 36 is provided with a longitudinally through channel, and a cart cable 37 is arranged in the channel in a penetrating way; the over-release switch 21 and the reversing proximity switch 22 are disposed in the passage and project in the radial direction of the cart cable 37.
The scheme also comprises a proximity switch junction box 23, wherein a left overtightening proximity switch 19, a right overtightening proximity switch 20, an overtightening proximity switch 21 and a reversing proximity switch 22 are electrically connected with the input end of the proximity switch junction box 23, the output end of the proximity switch junction box 23 is electrically connected with a comprehensive control PLC17, and the comprehensive control PLC17 obtains input switching value signals of the left overtightening proximity switch 19, the right overtightening proximity switch 20, the overtightening proximity switch 21 and the reversing proximity switch 22.
The invention also comprises a left empty disc limit switch and a right empty disc limit switch, wherein the left empty disc limit switch and the right empty disc limit switch are electrically connected with the comprehensive control PLC17 through a proximity switch junction box 23, and the left empty disc limit switch and the right empty disc limit switch act after the cart cable 37 on the cart cable reel 33 is emptied to prompt the emptying of the cart cable 37. Similarly, a full tray limit switch may be provided to indicate that the cart cable 37 on the cart cable reel 33 is full.
In one embodiment, the scheme of controlling the spreader cable reels 34 and the trolley cable reels 33 in the remaining part is also applicable if there is no festoon part, i.e. no electric festoon 35, festoon cable 39, festoon motor and first festoon frequency converter 11, second festoon frequency converter 12 and third festoon frequency converter 13.
The power supply method of the present invention is described below:
s1: cart cable reel 33 runs:
the upper computer PLC18 sends out a cart cable reel 33 running instruction to the comprehensive control PLC17, the comprehensive control PLC17 controls the main frequency converter 2 to work, the main frequency converter 2 controls the cart cable reel motor contactor 3 to be attracted, at the moment, the cart cable reel motor 5 is started, and the cart cable reel 33 rotates along with the cart cable reel motor 5, so that the cart cable 37 is wound and unwound;
when the left overtightening proximity switch 19, the right overtightening proximity switch 20 or the overtightening proximity switch 21 is started, the proximity switch junction box 23 transmits signals to the comprehensive control PLC17, the comprehensive control PLC17 transmits shutdown signals to the upper computer PLC18, and the upper computer PLC18 sends shutdown instructions to the comprehensive control PLC17.
S2: the spreader cable reel 34 operates:
the upper computer PLC18 sends out a lifting appliance cable reel 34 operation instruction to the comprehensive control PLC17, the comprehensive control PLC17 controls the main frequency converter 2 to work, the main frequency converter 2 controls the lifting appliance cable reel motor contactor 7 to be attracted, the lifting appliance cable reel motor 9 is started at the moment, the lifting appliance cable reel 34 rotates along with the lifting appliance cable reel motor 9, and the winding and unwinding of the lifting appliance cable 38 are realized.
When the tension detection device 26 detects that the tension of the lifting cable 38 is too high or too low, tension information is transmitted to the comprehensive control PLC17, the comprehensive control PLC17 transmits a shutdown signal to the upper computer PLC18, and the upper computer PLC18 sends a shutdown instruction to the comprehensive control PLC17.
S3.: electric towing 35 operates:
the upper computer PLC18 sends an operation instruction to the comprehensive control PLC17, and the comprehensive control PLC17 controls the first traction frequency converter 11, the second traction frequency converter 12 and the third traction frequency converter 13 to work; the first towing transducer 11 drives a first towing driving motor 14, the second towing transducer 12 drives a second towing driving motor 15, and the third towing transducer 13 drives a third towing driving motor 16; the first tow driving motor 14, the second tow driving motor 15 and the third tow driving motor 16 are operated interactively, the first tow driving motor 14 drives the electric tow first 351 to drag the first tow cable 391, the second tow driving motor 15 drives the electric tow second 352 to drag the second tow cable 392, and the third tow driving motor 16 drives the electric tow third 353 to drag the third tow cable 393.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (10)
1. A shore bridge mobile power supply device is characterized in that: which comprises a mobile power supply control cabinet (1), a cart cable reel motor (5), a lifting appliance cable reel motor (9), a cart cable reel (33), a lifting appliance cable reel (34) and an upper computer PLC (18), wherein,
the cart cable reel motor (5) drives the cart cable reel (33) to rotate, and the lifting appliance cable reel motor (9) drives the lifting appliance cable reel (34) to rotate;
a cart cable (37) is wound on the cart cable reel (33), and a lifting appliance cable (38) is wound on the lifting appliance cable reel (34);
the mobile power supply control cabinet (1) comprises a comprehensive control PLC (17);
the upper computer PLC (18) is in communication connection with the comprehensive control PLC (17), the upper computer PLC (18) drives the cart cable reel motor (5) to start through the comprehensive control PLC (17), and the cart cable reel rotates clockwise or anticlockwise and completes winding and unwinding of the cart cable (37);
the upper computer PLC (18) drives the lifting appliance cable reel motor (9) to act through the comprehensive control PLC (17) and drives the lifting appliance cable reel (34) to rotate clockwise or anticlockwise and complete the winding and unwinding of the lifting appliance cable (38).
2. A quay crane mobile power supply device according to claim 1, wherein: the mobile power supply control cabinet (1) further comprises a main frequency converter (2), and the comprehensive control PLC (17) switches the starting or stopping state of the cart cable reel motor (5) and the lifting appliance cable reel motor (9) through the main frequency converter (2).
3. A quay crane mobile power supply device as claimed in claim 2, wherein: the mobile power supply control cabinet (1) further comprises a cart cable reel motor contactor (3) and a lifting appliance cable reel motor contactor (7), the cart cable reel motor contactor (3) is arranged between the main frequency converter (2) and the cart cable reel motor (5), the lifting appliance cable reel motor contactor (7) is arranged between the main frequency converter (2) and the lifting appliance cable reel motor (9), and the cart cable reel motor contactor (3) and the lifting appliance cable reel motor contactor (7) are used for switching the starting state or the stopping state of the cart cable reel motor (5) and the lifting appliance cable reel motor (9).
4. A quay crane mobile power supply according to claim 3, wherein: the electric towing machine also comprises a towing body, a towing motor, an electric towing (35) and a towing cable (39); the electric festoon (35) is arranged on the festoon body and is connected with the festoon body in a sliding or rolling way; the festoon motor is fixedly arranged on the electric festoon, and the movable end of the festoon motor is meshed with the electric festoon (35); the towing cable (39) sequentially passes through one end of the electric towing (35) far away from the towing body; the towing motor is used for driving the electric towing (35) to move along the towing body; the upper computer PLC (18) drives the towing motor to drive the electric towing machine (35) to move along the towing body through the comprehensive control PLC (17), and the electric towing machine (35) drags the towing cable (39) to move along the extending direction of the towing body; one end of the towing body is arranged on the land side, and the other end extends towards the sea side.
5. A quay crane mobile power supply according to claim 4, wherein: the electric towing machine comprises a first towing driving motor (14), a second towing driving motor (15) and a third towing driving motor (16), wherein the electric towing (35) comprises an electric towing first (351), an electric towing second (352) and an electric towing third (353), the first towing driving motor (14) drags the electric towing first (351) to move, the second towing driving motor (15) drags the electric towing second (352) to move, and the third towing driving motor (16) drags the electric towing third (353) to move;
the festoon cable (39) comprises a first festoon cable (391), a second festoon cable (392) and a third festoon cable (393), wherein the first festoon cable (391) is arranged on the electric festoon one (351), the second festoon cable (392) is arranged on the electric festoon two (352), the third festoon cable (393) is arranged on the electric festoon three (353), and the first festoon cable (391), the second festoon cable (392) and the third festoon cable (393) are connected in sequence in an end-to-end mode.
6. A quay crane mobile power supply according to claim 5, wherein: a first land side limiting part (27), a second land side limiting part (28), a third land side limiting part (29), a first sea side limiting part (30), a second sea side limiting part (31) and a third sea side limiting part (32) are sequentially arranged on the towing body at intervals; the electric towing one (351) is positioned between the first land side limiting part (27) and the first sea side limiting part (30) along the moving range of the towing body; the electric tow second (352) is positioned between the second land side limiting part (28) and the second sea side limiting part (31) along the moving range of the tow body; the electric towing third (353) is located between the third land-side limit portion (29) and the third sea-side limit portion (32) along the range in which the towing body moves.
7. A quay crane mobile power supply according to claim 5, wherein: the mobile power supply control cabinet (1) further comprises a first command dragging frequency converter (11), a second command dragging frequency converter (12) and a third command dragging frequency converter (13); the comprehensive control PLC (17) is respectively in communication connection with the first traction frequency converter (11), the second traction frequency converter (12) and the third traction frequency converter (13);
the first towing transducer (11) is used for driving the first towing driving motor (14) to act, the second towing transducer (12) is used for driving the second towing driving motor (15) to act, and the third towing transducer (13) is used for driving the third towing driving motor (16) to act.
8. A quay crane mobile power supply device according to claim 1, wherein: the cable guiding device further comprises a cable guiding frame (36), a left overtightening proximity switch (19), a right overtightening proximity switch (20), an overtightening proximity switch (21) and a reversing proximity switch (22), wherein a cart cable (37) passes through the surface of the cable guiding frame (36), and the cart cable (37) is in smooth transition on the surface of the cable guiding frame (36); the left overtightening proximity switch (19) is arranged at one side of the end part of the cable guide frame (36) close to the ground, and the right overtightening proximity switch (20) is arranged at the other side of the end part of the cable guide frame (36) close to the ground; a longitudinal through channel is arranged on the cable guide frame (36), and a cart cable (37) is arranged in the channel in a penetrating way; the over-release switch (21) and the reversing proximity switch (22) are arranged in the channel and extend towards the radial direction of the cart cable (37).
9. A quay crane mobile power supply according to claim 8, wherein: the device also comprises a proximity switch junction box (23); the left overtightening proximity switch (19), the right overtightening proximity switch (20), the overtightening proximity switch (21) and the reversing proximity switch (22) are electrically connected with the input end of the proximity switch junction box (23), the output end of the proximity switch junction box (23) is electrically connected with the comprehensive control PLC (17), and the comprehensive control PLC (17) controls the left overtightening proximity switch (19), the right overtightening proximity switch (20), the overtightening proximity switch (21) and the reversing proximity switch (22).
10. A method of supplying power, characterized by: a quay crane mobile power supply device comprising any one of claims 5-9, comprising in particular the steps of:
s1: the cart cable reel (33) operates:
the upper computer PLC (18) sends out a cart cable reel (33) operation instruction to the comprehensive control PLC (17), the comprehensive control PLC (17) controls the main frequency converter (2) to work, the main frequency converter (2) controls the cart cable reel motor contactor (3) to be attracted, at the moment, the cart cable reel motor (5) is started, and the cart cable reel (33) rotates along with the cart cable reel motor (5), so that retraction and release of a cart cable (37) are realized;
when the left overtightening proximity switch (19), the right overtightening proximity switch (20) or the overtightening proximity switch (21) is started, the proximity switch junction box (23) transmits signals to the comprehensive control PLC (17), the comprehensive control PLC (17) transmits shutdown signals to the upper computer PLC (18), and the upper computer PLC (18) sends shutdown instructions to the comprehensive control PLC (17);
s2: the hanger cable reel (34) operates:
the upper computer PLC (18) sends out a lifting appliance cable reel (34) operation instruction to the comprehensive control PLC (17), the comprehensive control PLC (17) controls the main frequency converter (2) to work, the main frequency converter (2) controls the lifting appliance cable reel motor contactor (7) to be attracted, at the moment, the lifting appliance cable reel motor (9) is started, and the lifting appliance cable reel (34) rotates along with the lifting appliance cable reel motor (9), so that the lifting appliance cable (38) is wound and unwound;
s3: electric towing (35) operates:
the upper computer PLC (18) sends an operation instruction to the comprehensive control PLC (17), and the comprehensive control PLC (17) controls the first traction frequency converter (11), the second traction frequency converter (12) and the third traction frequency converter (13) to work; the first towing transducer (11) drives the first towing driving motor (14) to act, the second towing transducer (12) drives the second towing driving motor (15) to act, and the third towing transducer (13) drives the third towing driving motor (16) to act; the first festoon driving motor (14), the second festoon driving motor (15) and the third festoon driving motor (16) run interactively, the first festoon driving motor (14) drives the electric festoon one (351) to drag the first festoon cable (391), the second festoon driving motor (15) drives the electric festoon two (352) to drag the second festoon cable (392), and the third festoon driving motor (16) drives the electric festoon three (353) to drag the third festoon cable (393).
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| CN202310260485.7A CN115973910B (en) | 2023-03-17 | 2023-03-17 | Mobile power supply device and power supply method for quay crane |
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| CN208747492U (en) * | 2018-09-05 | 2019-04-16 | 青岛港国际股份有限公司 | A kind of bridge crane cart cable protecting device and bridge crane |
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| CN2934171Y (en) * | 2006-07-07 | 2007-08-15 | 天津港股份有限公司煤码头分公司 | High-voltage cable protecting equipment for portal crane |
| CN201236108Y (en) * | 2008-05-21 | 2009-05-13 | 无锡华东重型机械有限公司 | Inland river harbor quayside container crane |
| JP2010143681A (en) * | 2008-12-17 | 2010-07-01 | Mitsubishi Heavy Ind Ltd | Cable reel controller, method for controlling cable reel, and tire type crane |
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| CN115973910A (en) | 2023-04-18 |
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