CN112072959A - Multifunctional control box for low-speed diesel engine turning machine for ship - Google Patents
Multifunctional control box for low-speed diesel engine turning machine for ship Download PDFInfo
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- CN112072959A CN112072959A CN202010950766.1A CN202010950766A CN112072959A CN 112072959 A CN112072959 A CN 112072959A CN 202010950766 A CN202010950766 A CN 202010950766A CN 112072959 A CN112072959 A CN 112072959A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P3/00—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters
- H02P3/06—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter
- H02P3/18—Arrangements for stopping or slowing electric motors, generators, or dynamo-electric converters for stopping or slowing an individual dynamo-electric motor or dynamo-electric converter for stopping or slowing an ac motor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Electric Motors In General (AREA)
Abstract
A multifunctional control box for a low-speed diesel engine turning machine for a ship is disclosed, wherein the turning machine comprises a motor and a brake device, and the brake device comprises a brake coil, a spring and a brake pad; the method is characterized in that: the multifunctional control box is internally provided with a brake control module connected with the brake device to control the motor of the jigger, so that the jigger without the brake control module can be turned, and the thermal relay with three gears is configured to cover the jigger of the marine low-speed diesel engine with various types, thereby realizing the overload protection of the motor of the jigger. The invention can control the starting and stopping of the jigger with different configurations with and without a brake control module in the motor, complete the jigger operation of the jigger, realize the overload protection of the motor, has the advantages of various functions, strong universality, safety and reliability, is suitable for the jigger of various marine low-speed diesel engines, and can also be applied to large-scale rotating parts used by the jigger.
Description
Technical Field
The invention relates to diesel engine manufacturing process equipment, in particular to a multifunctional control box for a turning machine of a marine low-speed diesel engine, and belongs to the field of marine low-speed diesel engines.
Background
In the manufacturing process of the marine low-speed diesel engine, a plurality of diesel engines of different models are produced at each station, each diesel engine is provided with a barring gear of different types and different powers, and a barring gear control box is used for controlling the starting and stopping of the barring gear and plays a role in protecting a motor of the barring gear.
The motor of the turning gear has two types, one type is a self-contained brake control module in the motor, the control box only needs to provide one path of main power supply for the motor, and the self-contained brake control module in the motor can supply power to a motor brake device to realize the starting and stopping control of the turning gear; the other is that the motor is not provided with a brake control module, and the control box is required to provide a brake power supply for the motor brake device additionally so as to realize the starting and stopping control of the car turning machine. The brake control module of the motor of the barring machine is a controllable direct-current power supply, is connected with a brake coil of a brake device in the motor, and controls the brake pad of the brake device to separate and clamp the motor through the on-off of the power supply of the brake coil, so that the starting and stopping of the barring machine are controlled. The action principle is that a brake coil of a brake device of a motor of the barring machine requires a direct-current power supply, the brake coil is electrified to act when a brake control module supplies power, a brake pad is disengaged, and the motor is started to rotate; when the brake control module is powered off, the brake coil loses power, the electromagnetic force disappears, the brake pad is clasped by the force applied by the spring in the brake device, and the motor stops rotating.
The control boxes of the jigger are fixedly arranged on the platforms of the manufacturing plant, but the control boxes are not provided with brake control modules; however, the diesel engine manufactured on the platform is not fixed in type, so that when the diesel engine without the brake control module inside the motor of the barring gear is manufactured, the barring gear control box fixedly arranged on the platform cannot be used, and the control box needs to be additionally connected to meet the production and manufacturing requirements.
The power of the motor of the jigger of the diesel engine with different models is different, and the model requirements of the thermal relay playing a role in protecting the motor are also different; in recent years, the increase of models of diesel engines causes that a thermal relay in an original control box on a platform can not meet the requirement of protecting motors of turning machines of all models, particularly a high-power motor can not be protected, and the phenomenon of tripping can frequently occur in the using process.
The connecting points of the incoming line and the outgoing line of the cable of the original control box are both in the box, and a professional is required to disassemble and connect the cable after the platform is hoisted.
The remote control handle is a far-end wired remote control device of a control box of the jigger, a stop button is arranged on the original remote control handle, the control of a remote control part can be cut off, however, the control part is found to be out of order in the long-term use process, the power supply part is not powered off due to the fact that a contactor fails to break away, and the condition that the jigger cannot be stopped timely and parts of a diesel engine are damaged is caused.
In addition, the top of the original control box is flat, so that the operating personnel often place sundries such as parts or water bottles, and the situation that the water passing bottles overturn and water flows into the control box to cause the fault of electric elements occurs.
To sum up, the problem that original car turning machine control box exists is as follows:
1. the turning machine without a brake control module in the motor cannot be controlled;
2. the control requirements of all machine type jiggers cannot be met;
2. the work of wire removing and wiring of the control box is complicated in the process of lifting the platform;
4. the remote control end stop button cannot ensure that a power circuit is cut off, and potential safety hazards exist;
5. the top of the control box is flat, so that the situation that the performance of the control box is affected by sundries accumulated easily occurs.
Disclosure of Invention
The invention aims to overcome the defects of the original control box of the barring gear, and provides a multifunctional control box which is more universal, fully covered, more convenient and faster and has higher safety and is used for a low-speed diesel barring gear for a ship.
The invention adopts the following technical scheme to solve the technical problems:
a multifunctional control box for a low-speed diesel engine turning machine for a ship is disclosed, wherein the turning machine comprises a motor and a brake device, and the brake device comprises a brake coil, a spring and a brake pad; the method is characterized in that: the multifunctional control box is internally provided with a brake control module connected with the brake device to control the motor of the jigger, so that the jigger without the brake control module can be turned, and the thermal relay with three gears is configured to cover the jigger of the marine low-speed diesel engine with various types, thereby realizing the overload protection of the motor of the jigger.
Furthermore, the multifunctional control box comprises a box body, a transformer, a rectifier bridge, a switch, a forward starting relay, a reverse starting relay, a first thermal relay, a second thermal relay, a third thermal relay, a thermal relay gear selection switch, a first thermal relay control relay, a second thermal relay control relay, a third thermal relay control relay, a thermal relay protection relay and an emergency cut-off relay;
the box body is provided with a control box power supply interface, a barring machine power supply interface, a first barring machine motor control interface, a second barring machine motor control interface and a remote control handle interface;
the power supply interface of the control box is used for supplying power to the whole multifunctional control box, is externally connected with an industrial alternating-current power supply and is internally connected with the primary level of the transformer;
the power interface of the turning machine is used for providing power for the turning machine, is externally connected with a motor of the turning machine, and is internally connected with the power interface of the control box through the contacts of the first thermal relay, the second thermal relay, the third thermal relay, the forward starting relay and the reverse starting relay;
the first barring machine motor control interface is used for controlling a motor of a barring machine with a brake control module, is externally connected with a brake module of the motor of the barring machine with the brake control module, and is internally connected with contacts of the forward starting relay and the reverse starting relay;
the second barring machine motor control interface is used for controlling a motor of a barring machine without a brake control module, is externally connected with a brake device of the motor of the barring machine without the brake control module, and is internally connected with the secondary side of the transformer through contacts, a rectifier bridge and a switch of the forward starting relay and the reverse starting relay;
the remote control handle interface is used for parking control of the motor, is externally connected with the remote control handle and is internally connected with a secondary of the transformer, and two ends of the secondary are connected with the vehicle-driving starting relay, the reverse starting relay, the first thermal relay control relay, the second thermal relay control relay, the third thermal relay control relay, the thermal relay protection relay, the emergency cut-off relay, the thermal relay gear selection switch and contacts of the first thermal relay, the second thermal relay and the third thermal relay;
the switch is switched on, the rectifier bridge is electrified and outputs direct current, the forward starting relay or the reverse starting relay acts, the brake coil acts by obtaining a working power supply, the brake pad is disconnected, the motor rotates, and the car turning machine starts at the same time, so that the car turning operation of the car turning machine without the brake control module is completed;
the thermal relay gear selection switch selectively switches on one relay of the first thermal relay control relay, the second thermal relay control relay and the third thermal relay control relay, a contact of the relay is closed, and the first thermal relay, the second thermal relay or the third thermal relay which is connected with the relay and corresponds to the motor power and the rated current of the car turning machine works; if the motor is subjected to thermal overload, the corresponding contacts of the first thermal relay, the second thermal relay or the third thermal relay are disconnected, the thermal relay protection relay connected with the contacts is powered off and the contacts are disconnected, a control circuit is powered off completely, the power supply of the motor is cut off, and thermal overload protection is realized on the motor;
during emergency, cut off remote control handle' S emergent parking button S20, emergent cutting relay loses the electricity and its contact disconnection, and control circuit loses the electricity entirely, cuts off the power of motor realizes the emergent parking of rolling machine.
Further, the rectifier bridge is a full-wave rectifier bridge, and is used as a brake control module for controlling the brake device, and the rectifier bridge converts the input 110V alternating current into the output 99V direct current.
Further, the first thermal relay is LRD340C and is used for protecting the motor with the rated current of 30-40A, the second thermal relay is LRD32C and is used for protecting the motor with the rated current of 18-32A, and the third thermal relay is LRD16C and is used for protecting the motor with the rated current of 6-18A, so that overload protection of the motors of various car driers is achieved.
Furthermore, the first thermal relay control relay, the second thermal relay control relay and the third thermal relay control relay adopt contacts to realize interlocking, and the forward starting relay and the reverse starting relay realize interlocking through the contacts.
Furthermore, the control box power interface, the barring machine power interface, the first barring machine motor control interface, the second barring machine motor control interface and the remote control handle interface are aviation plugs.
Furthermore, the top of the box body adopts an inclined structure.
The multifunctional control box for the barring machine of the marine low-speed diesel engine solves the problems that an original control box is not universal, does not cover all engine types, is inconvenient to use and is low in safety, and has the following beneficial technical effects:
1. a rectifier bridge is configured as a brake control module, so that the control of different configured jigger motors is realized;
2. the thermal relays with three gears are configured, so that overload protection of all machine types is realized;
3. the cable for the control box to enter and exit is designed to be an aviation plug type, so that the lifting operation of the platform is facilitated;
4. the remote control handle is provided with an emergency stop button, so that the safety of the multifunctional control box is improved;
5. the top of the control box body adopts an inclined top structure, so that the influence of sundries accumulated on the top on the electric elements in the control box is avoided.
The invention is suitable for controlling various types of low-speed diesel engine jiggers for ships, and can be widely applied to the fields of large-scale rotating parts and the like relating to the use of jiggers.
Drawings
Fig. 1 is an electrical schematic of the present invention.
Fig. 2 is a schematic diagram of a remote control handle.
In the figure:
the system comprises a T-transformer, a V01-rectifier bridge, F12-first thermal relay, F13-second thermal relay, F14-third thermal relay, K11-vehicle starting relay, K12-reverse starting relay, K24-emergency cut-off relay, K25-first thermal relay control relay, K26-second thermal relay control relay, K27-third thermal relay control relay, K28-thermal relay protection relay, PLUG 1-control box power interface, PLUG 2-vehicle driver power interface, PLUG 3-first vehicle driver motor control interface, PLUG 4-second vehicle driver motor control interface, PLUG 5-remote control handle interface, Q04-switch, S10-thermal relay gear selection switch and S20-emergency stop button.
Detailed Description
The multifunctional control box for a low-speed diesel engine turning machine for a ship according to the present invention will be described in further detail with reference to the accompanying drawings, but the invention is not limited thereto.
The invention discloses a barring machine for controlling low-speed diesel engines of various types of ships, which comprises a barring machine with a brake control module in a motor and a barring machine without the brake control module in the motor, wherein the barring machine comprises a motor and a brake device, and the brake device comprises a brake coil, a spring and a brake pad. The multifunctional control box controls the motor to start and stop, completes the turning operation of the turning machine, and simultaneously realizes the overload protection of the motor.
As shown in fig. 1, the multifunctional control box for the turning machine of the marine low-speed diesel engine comprises: the intelligent emergency shutdown system comprises a box body, a transformer T, a rectifier bridge V01, a switch Q04, a forward starting relay K11, a reverse starting relay K12, a first thermal relay F12, a second thermal relay F13, a third thermal relay F14, a thermal relay gear selection switch S10, a first thermal relay control relay K25, a second thermal relay control relay K26, a third thermal relay control relay K27, a thermal relay protection relay K28, an emergency shutdown relay K24 and a remote control handle. Except the remote control handle, other components are arranged inside the box body.
The bottom of the box body is provided with a control box power interface PLUG 1, a turning machine power interface PLUG 2, a first turning machine motor control interface PLUG3, a second turning machine motor control interface PLUG 4 and a remote control handle interface PLUG 5, and the control box power interface PLUG 1, the turning machine power interface PLUG 2, the first turning machine motor control interface PLUG3, the second turning machine motor control interface PLUG 4 and the remote control handle interface PLUG 5 are aviation PLUGs and are used for connecting a cable inlet and outlet.
Considering that the multifunctional control box is arranged on the platform, the platform needs to be lifted when the diesel engine is arranged, and the cable inlet and outlet of the multifunctional control box needs to be detached before lifting, so that the cable is prevented from being broken in the lifting process. Before the platform hangs and all demolish the cable by professional electrician before moving, treat that the platform hangs again and carry out the cable wiring that resets after the position, frequent demolising and reset can cause wearing and tearing to cable junction terminal, increase work load for the operation personnel simultaneously. For these factors, the cable inlet and outlet are therefore provided in the form of an aircraft plug. In the process of hoisting the subsequent platform, professional electricians are not needed, and only hoisting operators directly pull and insert the aviation plugs, so that the workload is saved, and the cable connecting terminals are protected.
The control box power interface PLUG 1 is used for power supply of the whole multifunctional control box, is externally connected with an industrial alternating current power supply, and is internally connected with the primary level of the transformer T.
The power interface PLUG 2 of the car turning machine is used for providing power for the car turning machine, is externally connected with a motor of the car turning machine, and is internally connected with the power interface PLUG 1 of the control box through contacts of the first thermal relay F12, the second thermal relay F13, the third thermal relay F14, the forward starting relay K11 and the reverse starting relay K12.
The model of the diesel engine manufactured on the platform is not fixed, and the power of the diesel engine turning machine motors of different models is different, so that the requirements on the model of the thermal relay for protecting the motors are different. In order to realize overload protection of the motor in the working process of the car turning machine, the multifunctional control box can adapt to the use of various car turning machines, and therefore the first thermal relay F12, the second thermal relay F13 and the third thermal relay F14 are arranged to serve as overload protection of the motor in the car turning process, and full coverage of all car turning machine motors from small power to large power is achieved. The rated working currents of the motors of the new models to be promoted in the prior and subsequent years are summarized, counted and analyzed, and the models of three-grade thermal relays are reasonably selected, wherein the first thermal relay F12 is of an LRD340C model and can protect the turning machine motor with the rated current of 30-40A, the second thermal relay F13 is of an LRD32C model and can protect the turning machine motor with the rated current of 18-32A, and the third thermal relay F14 is of an LRD16C model and can protect the turning machine motor with the rated current of 6-18A. Therefore, each grade of thermal relay can be protected within a range, and the third grade of thermal relay can cover all machine types. Any one of the thermal relays can be selected for protection control through the thermal relay gear selection switch S10.
The first barring machine motor control interface PLUG3 is used for controlling a barring machine motor with a brake control module inside and a brake control module externally connected with the barring machine motor with the brake control module to realize the fast braking and barring operation of the barring machine with the brake control module and internally connected with contacts of the forward starting relay K11 and the reverse starting relay K12.
The second barring machine motor control interface PLUG 4 is used for controlling a barring machine motor without a brake control module inside, externally connecting a brake coil of a brake device of the barring machine motor without the brake control module, and internally connecting a secondary side of the transformer T through contacts of the forward starting relay K11 and the reverse starting relay K12, the rectifier bridge V01 and the switch Q04.
The rectifier bridge V01 is used as a brake control module for controlling a brake device, the rectifier bridge V01 is a full-wave rectifier bridge, alternating current is taken from the secondary side of the transformer T and converted into direct current, 110V alternating current input and 99V direct current output are connected out through the second barring machine motor control interface PLUG 4 and are used by a barring machine motor without the brake control module inside, and the barring operation of the barring machine without the brake control module inside is realized.
The remote control handle interface PLUG 5 is used for parking control of a motor of a car turning machine, is externally connected with the remote control handle, is internally connected with a secondary side of the transformer T, and two ends of the secondary side are connected with a main car starting relay K11, a reverse car starting relay K12, a first thermal relay control relay K25, a second thermal relay control relay K26, a third thermal relay control relay K27, a thermal relay protection relay K28, an emergency cut-off relay K24, a thermal relay gear selection switch S10, contacts of the first thermal relay F12, the second thermal relay F13 and the third thermal relay F14.
The first thermal relay control relay K25, the second thermal relay control relay K26 and the third thermal relay control relay K27 adopt normally closed contacts to realize interlocking of the other two relays, so that the phenomenon that a plurality of thermal relays are simultaneously put into protection is avoided. Meanwhile, the forward starting relay K11 and the reverse starting relay K12 realize interlocking through contacts, so that the occurrence of simultaneous forward and reverse commands is avoided.
Referring to fig. 2, the remote control handle is used for directly and rapidly disconnecting the power supply to stop the barring machine when an emergency situation occurs in the barring operation, and the remote control handle includes an emergency stop button S20.
In the using process of the barring machine, the assembly operation of part of diesel engines has high requirements on the accurate starting and stopping of the barring machine, particularly stop instructions; if the jigger cannot stop in time, the crankshaft of the diesel engine is continuously driven to rotate, and the crankshaft or other parts can be damaged. An extreme case of failure may occur when the remote control handle gives a stop signal and the contacts in the control box are not disconnected due to the failure, i.e. the motor power supply cannot be disconnected, so that the car turning machine cannot stop. The emergency stop button S20 is provided in consideration of coping with such a failure.
The box of multi-functional control box arranges on the platform, and the operating personnel can place debris such as different kinds of spare part or water-jug, drinking cup on this box at will, has appeared crossing the water bottle and topple the rivers and cause the condition of electrical components trouble to the control box in, for solving this problem, the tilting of taking the angle is adopted at the top of box, realizes preventing to place the function of article, avoids the operating personnel to place debris such as part or water-jug.
The working principle and the process of the multifunctional control box are as follows:
1) a car turning machine for controlling inside self-carrying brake control module of motor:
the control box power interface PLUG 1 is connected with an external alternating current power supply, the rolling machine power interface PLUG 2 is connected with a motor of a rolling machine with a brake control module inside, the first rolling machine motor control interface PLUG3 is connected with the brake control module of the motor, no delay brake is realized when the motor is powered off, no sliding fault occurs in the brake process, and therefore the fast brake and rolling operation of the rolling machine with the brake control module is completed.
2) The jigger is used for controlling the interior of the motor without a brake control module:
the control box power interface PLUG 1 is connected with an external alternating current power supply, the rolling machine power interface PLUG 2 is connected with a motor of a rolling machine without a brake control module inside, the second rolling machine motor control interface PLUG 4 is connected with a brake coil of a brake device of the motor, the switch Q04 is switched on, the rectifier bridge V01 is electrified and outputs 99V direct current, after the forward starting relay K11 or the reverse starting relay K12 acts, a contact is closed, the brake coil obtains a direct current working power supply to act, the brake pad is disconnected, the motor rotates, the rolling machine starts, and therefore the rolling operation of the rolling machine without the brake control module is completed.
3) And realizing overload protection on the motor:
according to the power and rated current of a motor of the car turning machine, a corresponding relay in the first thermal relay control relay K25, the second thermal relay control relay K26 and the third thermal relay control relay K27 is selected to be switched on through the thermal relay gear selection switch S10, a normally open contact is closed after the relay is electrified, and a first thermal relay F12, a second thermal relay F13 or a third thermal relay F14 connected with the relay works; if the motor is subjected to thermal overload, the normally closed contacts of the corresponding first thermal relay F12, second thermal relay F13 or third thermal relay F14 are disconnected, the thermal relay protection relay K28 connected with the normally closed contacts is powered off, the normally open contacts of the thermal relay protection relay are disconnected, the control circuit is powered off completely, the power supply of the motor is cut off, and thermal overload protection is carried out on the motor.
4) And carrying out emergency parking on the car turning machine:
the remote control handle interface PLUG 5 is connected with the remote control handle, referring to fig. 2, when an emergency situation occurs, the emergency stop button S20 is cut off, the emergency cut-off relay K24 loses power and the normally open contact thereof is disconnected, the control circuit loses power completely, the power supply of the motor is cut off, the motor stops rotating rapidly, and the emergency stop of the vehicle turning machine is realized.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. The scope of the invention as claimed should also include obvious modifications and alternatives to the present invention.
Claims (7)
1. A multifunctional control box for a low-speed diesel engine turning machine for a ship is disclosed, wherein the turning machine comprises a motor and a brake device, and the brake device comprises a brake coil, a spring and a brake pad; the method is characterized in that: the multifunctional control box is internally provided with a brake control module connected with the brake device to control the motor of the jigger, so that the jigger without the brake control module can be turned, and the thermal relay with three gears is configured to cover the jigger of the marine low-speed diesel engine with various types, thereby realizing the overload protection of the motor of the jigger.
2. The multifunctional control box for the turning machine of the marine low-speed diesel engine according to claim 1, characterized in that: the multifunctional control box comprises a box body, a transformer, a rectifier bridge, a switch, a forward starting relay, a reverse starting relay, a first thermal relay, a second thermal relay, a third thermal relay, a thermal relay gear selection switch, a first thermal relay control relay, a second thermal relay control relay, a third thermal relay control relay, a thermal relay protection relay and an emergency cut-off relay;
the box body is provided with a control box power supply interface, a barring machine power supply interface, a first barring machine motor control interface, a second barring machine motor control interface and a remote control handle interface;
the power supply interface of the control box is used for supplying power to the whole multifunctional control box, is externally connected with an industrial alternating-current power supply and is internally connected with the primary level of the transformer;
the power interface of the turning machine is used for providing power for the turning machine, is externally connected with a motor of the turning machine, and is internally connected with the power interface of the control box through the contacts of the first thermal relay, the second thermal relay, the third thermal relay, the forward starting relay and the reverse starting relay;
the first barring machine motor control interface is used for controlling a motor of a barring machine with a brake control module, is externally connected with a brake module of the motor of the barring machine with the brake control module, and is internally connected with contacts of the forward starting relay and the reverse starting relay;
the second barring machine motor control interface is used for controlling a motor of a barring machine without a brake control module, is externally connected with a brake device of the motor of the barring machine without the brake control module, and is internally connected with the secondary side of the transformer through contacts, a rectifier bridge and a switch of the forward starting relay and the reverse starting relay;
the remote control handle interface is used for parking control of the motor, is externally connected with the remote control handle and is internally connected with a secondary of the transformer, and two ends of the secondary are connected with the vehicle-driving starting relay, the reverse starting relay, the first thermal relay control relay, the second thermal relay control relay, the third thermal relay control relay, the thermal relay protection relay, the emergency cut-off relay, the thermal relay gear selection switch and contacts of the first thermal relay, the second thermal relay and the third thermal relay;
the switch is switched on, the rectifier bridge is electrified and outputs direct current, the forward starting relay or the reverse starting relay acts, the brake coil acts by obtaining a working power supply, the brake pad is disconnected, the motor rotates, and the car turning machine starts at the same time, so that the car turning operation of the car turning machine without the brake control module is completed;
the thermal relay gear selection switch selectively switches on one relay of the first thermal relay control relay, the second thermal relay control relay and the third thermal relay control relay, a contact of the relay is closed, and the first thermal relay, the second thermal relay or the third thermal relay which is connected with the relay and corresponds to the motor power and the rated current of the car turning machine works; if the motor is subjected to thermal overload, the corresponding contacts of the first thermal relay, the second thermal relay or the third thermal relay are disconnected, the thermal relay protection relay connected with the contacts is powered off and the contacts are disconnected, a control circuit is powered off completely, the power supply of the motor is cut off, and thermal overload protection is realized on the motor;
during emergency, cut off remote control handle' S emergent parking button S20, emergent cutting relay loses the electricity and its contact disconnection, and control circuit loses the electricity entirely, cuts off the power of motor realizes the emergent parking of rolling machine.
3. The multifunctional control box for the turning machine of the marine low-speed diesel engine according to claim 2, characterized in that: the rectifier bridge is a full-wave rectifier bridge and is used as a brake control module for controlling the brake device, and the rectifier bridge converts input 110V alternating current into output 99V direct current.
4. The multifunctional control box for the turning machine of the marine low-speed diesel engine according to claim 2, characterized in that: the first thermal relay is LRD340C and is used for protecting a motor with rated current of 30-40A, the second thermal relay is LRD32C and is used for protecting a motor with rated current of 18-32A, and the third thermal relay is LRD16C and is used for protecting a motor with rated current of 6-18A, so that overload protection of motors of various car driers is achieved.
5. The multifunctional control box for the turning machine of the marine low-speed diesel engine according to claim 2, characterized in that: the first thermal relay control relay, the second thermal relay control relay and the third thermal relay control relay are interlocked by adopting contacts, and the forward starting relay and the reverse starting relay are interlocked by the contacts.
6. The multifunctional control box for the turning machine of the marine low-speed diesel engine according to claim 2, characterized in that: the control box power interface, the barring machine power interface, the first barring machine motor control interface, the second barring machine motor control interface and the remote control handle interface are aviation plugs.
7. The multifunctional control box for the turning machine of the marine low-speed diesel engine according to claim 2, characterized in that: the top of the box body adopts an inclined structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950766.1A CN112072959A (en) | 2020-09-11 | 2020-09-11 | Multifunctional control box for low-speed diesel engine turning machine for ship |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010950766.1A CN112072959A (en) | 2020-09-11 | 2020-09-11 | Multifunctional control box for low-speed diesel engine turning machine for ship |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112072959A true CN112072959A (en) | 2020-12-11 |
Family
ID=73695183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010950766.1A Pending CN112072959A (en) | 2020-09-11 | 2020-09-11 | Multifunctional control box for low-speed diesel engine turning machine for ship |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112072959A (en) |
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2020
- 2020-09-11 CN CN202010950766.1A patent/CN112072959A/en active Pending
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