CN110526133A - A kind of high low speed automatic switchover system and its switching method for rescue boat removal process - Google Patents
A kind of high low speed automatic switchover system and its switching method for rescue boat removal process Download PDFInfo
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- CN110526133A CN110526133A CN201910779749.3A CN201910779749A CN110526133A CN 110526133 A CN110526133 A CN 110526133A CN 201910779749 A CN201910779749 A CN 201910779749A CN 110526133 A CN110526133 A CN 110526133A
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- intermediate relay
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 239000000725 suspension Substances 0.000 claims abstract description 20
- 238000004064 recycling Methods 0.000 claims abstract description 15
- 238000010010 raising Methods 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims 1
- 239000011435 rock Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING
- B63B23/00—Equipment for handling lifeboats or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C9/00—Life-saving in water
- B63C9/02—Lifeboats, life-rafts or the like, specially adapted for life-saving
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/06—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs mounted for jibbing or luffing movements
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Motor And Converter Starters (AREA)
- Control And Safety Of Cranes (AREA)
Abstract
The present invention relates to a kind of high low speed automatic switchover systems and switching method for rescue boat removal process, including rotary suspension arm (1) and fix cantilever crane (2), the fixed cantilever crane (2) includes outer column (2-1) and inner column (2-2), it stretches out and is provided with rotary shaft (3) on the inner column (2-2), one end of the rotary suspension arm (1) rotates to realize the decentralization and recycling of rescue boat around rotary shaft (3)；It is characterized by: being provided with the first limiting device (4) and spacing collision block (5) on the inside of the outer column (2-1), the second limiting device (6) are provided on the inside of the inner column (2-2)；In electronic recycling rescue boat, first to rise rescue boat at a high speed, then with low speed recycling rescue boat to predetermined position, guarantee whole process steadily stable progress, it avoids making kayak body rock severity due to recycling excessive velocities, while also avoiding rescue boat and fixed cantilever crane when folding and unfolding rescue boat that sharp impacts occur.
Description
Technical field
The present invention relates to the technical fields of rescue boat recycling, and in particular to a kind of high low speed for rescue boat removal process
Automatic switchover system and its switching method.
Background technique
According to the requirement of International Convention for the Safety of Life at Sea and China " Rules for the Life-saving Appliances of Sea-going Steel Ships ", the decentralization of rescue boat
Must satisfy following conditions: i.e. rescue boat is transferred to sea within the time no more than 5 minutes in power loss by lash ship；
And the recycling of rescue boat is then required to meet condition: i.e. not less than 18 ms/min by rescue boat from marine raising.Thus ordinary circumstance
The decentralization of lower rescue boat is all to transfer by self gravity, and recycle then through driving devices raisings such as motors.And in motor driven
During rescue boat raising, since motor driven revolving speed is excessively high, rescue boat installs the problems such as not in place, is easy to recycle because of rescue boat
Excessive velocities and so that kayak body is rocked severity, while when rescue boat is transferred to and is recycled in place rescue boat be also easy to occur with cantilever crane it is acute
Strong collision damages.
Summary of the invention
For the deficiencies in the prior art and defect, the present invention provides a kind of height for rescue boat removal process
Fast automatic switchover system and its switching method.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of high low speed automatic switchover system for rescue boat removal process, including rotary suspension arm and fixed cantilever crane, it is described solid
Fixed arm frame includes outer column and inner column, stretches out on the inner column and is provided with rotary shaft, one end of the rotary suspension arm
It is rotated around rotary shaft to realize the decentralization and recycling of rescue boat；It is characterized by: being provided on the inside of the outer column
One limiting device and spacing collision block are provided with the second limiting device on the inside of the inner column；
Be provided in the circuit for controlling motor of the high low speed automatic switchover system high-speed lifting circuit, low speed hoisting circuit, with
And stable position circuit；And wherein high-speed lifting circuit, low speed hoisting circuit and stable position circuit are parallel with one another；It is described
The output end of circuit for controlling motor connects driving motor；
In the high-speed lifting circuit, including high-speed lifting interconnected switch, the first limit switch, the first intermediate relay
Device and the second intermediate relay, and wherein the first intermediate relay and the second intermediate relay are parallel with one another, high-speed lifting is opened
It closes, third limit switch and the first intermediate relay are serially connected with any one in the second intermediate relay；
In the low speed hoisting circuit, including first the first contact of intermediate relay, the second intermediate relay being serially connected
Second contact, second the first contact of A.C. contactor, the first electrothermal relay and the first A.C. contactor；
In the stable position circuit, including second the first contact of intermediate relay, the first intermediate relay being serially connected
Second contact, first the first contact of A.C. contactor the first A.C. contactor of the first contact, the second electrothermal relay and the second exchange
Contactor；
It further include the first limit switch with the high-speed lifting circuit, low speed hoisting circuit and stable position circuit in series
And second limit switch, and the first limit switch and the second limit switch are serially connected；
And wherein,
When first limiting device is pressed, the third limit switch closure, the normally opened contact closure of third limit switch,
Normally-closed contact disconnects；When first limiting device is released reset, the third limit switch is disconnected, third limit switch
Normally opened contact disconnects, normally-closed contact closure；
When second limiting device is pressed, first limit switch and the second limit switch are simultaneously switched off；Described second
When limiting device is released reset, first limit switch and the second limit switch are closed at；
When first intermediate relay closure is powered, first the first contact closure of intermediate relay, the first intermediate relay the
Two contacts disconnect；When first intermediate relay disconnects power loss, first the first contact of intermediate relay is disconnected, the first intermediate relay
Second contact closure；
When second intermediate relay closure is powered, second the first contact closure of intermediate relay, the second intermediate relay the
Two contacts disconnect；When second intermediate relay disconnects power loss, second the first contact of intermediate relay is disconnected, the second intermediate relay
Second contact closure；
When first A.C. contactor is powered, first the first contact of A.C. contactor is disconnected, the touching of the first A.C. contactor second
Head closure, the first A.C. contactor third contact closure；When the first A.C. contactor power loss, first the first contact of A.C. contactor
Closure, first the second contact of A.C. contactor disconnect, and the first A.C. contactor third contact disconnects；
When second A.C. contactor is powered, second the first contact of A.C. contactor is disconnected, the touching of the second A.C. contactor second
Head closure, the second A.C. contactor third contact closure；When the second A.C. contactor power loss, second the first contact of A.C. contactor
Closure, second the second contact of A.C. contactor disconnect, and the second A.C. contactor third contact disconnects.
Further, first contact of the first A.C. contactor is also parallel with low speed raising switch.
Further, the present invention also provides a kind of switchings of high low speed automatic switchover system for rescue boat removal process
Method, it is characterised in that: the following steps are included:
1) in initial reclamation state, rotary suspension arm is in the state that hangs out, and the first limiting device is pressed in spacing collision block holding, thus real
Existing third limit switch closure, and then realize the normally opened contact closure of third limit switch, normally-closed contact disconnects；
2) after pressing high-speed lifting switch, the second intermediate relay closure is powered, second the first contact closure of intermediate relay,
Second the second contact of intermediate relay disconnects, and the second A.C. contactor is powered, second the second contact closure of A.C. contactor, and second
A.C. contactor third contact closure, driving motor high-speed cruising recycle rescue boat from marine high speed；
3) when rescue boat, which rises, is raised to upturned position, rotary suspension arm leaves fixed cantilever crane, and the limit being mounted on fixed cantilever crane is hit
Block follows the pressing for synchronizing and leaving and unclamp to the first limiting device, and third limit switch disconnects at this time, third limit switch
Normally opened contact disconnects, normally-closed contact closure, thus, it disconnects at this time, the second A.C. contactor power loss, driving motor stops high speed and transports
Row, while the first intermediate relay closure is powered, the first A.C. contactor is powered, first the second contact closure of A.C. contactor,
First A.C. contactor third contact closure, first the first contact closure of A.C. contactor, the operation of driving motor low speed；
4) when rotary suspension arm is recovered at a slow speed at fixed cantilever crane, rotary suspension arm bumps against the second limiting device again and the second limit is filled
It sets and is pressed, the first limit switch and the second limit switch simultaneously switch off, and cut off circuit, and driving motor is out of service.
The beneficial effects of the present invention are:
(1) it in electronic recycling rescue boat, first to rise rescue boat at a high speed, then with low speed recycling rescue boat to predetermined position, protects
Whole process steadily stable progress is demonstrate,proved, avoids making kayak body rock severity due to recycling excessive velocities, while also folding and unfolding being avoided to rescue
Sharp impacts occur for rescue boat and fixed cantilever crane when helping ship.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is a kind of claimed structure of the high low speed automatic switchover system for rescue boat removal process of the present invention
Schematic diagram；
Fig. 2 is the structural schematic diagram that rescue boat of the invention is located at initial position.
Fig. 3 is that rescue boat of the present invention is located at the structural schematic diagram recycled from initial position to recovery position.
Fig. 4 is the structural schematic diagram that rescue boat of the present invention is located at recovery position.
Fig. 5 is a kind of claimed circuit of the high low speed automatic switchover system for rescue boat removal process of the present invention
Structure chart.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further explained in detail.These attached drawings are simplified schematic diagram, only with
Illustration illustrates basic structure of the invention, therefore it only shows the composition relevant to the invention.
As shown in Figs. 1-5, a kind of high low speed automatic switchover system for rescue boat removal process, including rotary suspension arm 1
With fixed cantilever crane 2, fixed cantilever crane 2 includes outer column 2-1 and inner column 2-2, stretches out on inner column 2-2 and is provided with rotary shaft
3, one end of rotary suspension arm 1 rotates to realize the decentralization and recycling of rescue boat around rotary shaft 3；It is set on the inside of outer column 2-1
It is equipped with the first limiting device 4 and spacing collision block 5, spacing collision block 5 is used for pressing the first limiting device 4, the first limiting device 4
In the high speed recycling for realizing rescue boat when pressed, recycled when being released reset for realizing the low speed of rescue boat, inside
The second limiting device 6 is provided on the inside of column 2-2, the second limiting device 6 for realizing entire motor control when pressed
The disconnection of circuit；
High-speed lifting circuit, low speed hoisting circuit, Yi Jiwen are provided in the circuit for controlling motor of high low speed automatic switchover system
Determine position loop；And wherein high-speed lifting circuit, low speed hoisting circuit and stable position circuit are parallel with one another；Motor control
The output end of circuit connects driving motor M；
In high-speed lifting circuit, including high-speed lifting switch SB-1 interconnected, the first limit switch 3SQ, among first
Relay 1KA and the second intermediate relay 2KA, and wherein the first intermediate relay 1KA and the second intermediate relay 2KA are mutual
Parallel connection, high-speed lifting switch SB-1, third limit switch 3SQ and the first intermediate relay 1KA and the second intermediate relay 2KA
In any one be serially connected；
In low speed hoisting circuit, including first the first contact of intermediate relay 1KA-1, the second intermediate relay being serially connected
Second contact 2KA-2, second the first contact of A.C. contactor 2KM-1, the first electrothermal relay 1FR and the first A.C. contactor
1KM；
In stable position circuit, including second the first contact of intermediate relay 2KA-1, the first intermediate relay being serially connected
Second contact 1KA-2, first A.C. contactor the first contact the first contact of the first A.C. contactor 1KM-1, the second electrothermal relay
2FR and the second A.C. contactor 2KM；
Further include with the first limit switch 1SQ of high-speed lifting circuit, low speed hoisting circuit and stable position circuit in series and
Second limit switch 2SQ, and the first limit switch 1SQ and the second limit switch 2SQ are serially connected；
And wherein,
When first limiting device 4 is pressed, third limit switch 3SQ closure, the normally opened contact 3SQ-1 of third limit switch 3SQ
Closure, normally-closed contact 3SQ-2 are disconnected；When first limiting device 4 is released reset, third limit switch 3SQ is disconnected, third limit
The normally opened contact of switch 3SQ disconnects, normally-closed contact closure；
When second limiting device 6 is pressed, the first limit switch 1SQ and the second limit switch 2SQ are simultaneously switched off；Second limit dress
When setting 6 and being released reset, the first limit switch 1SQ and the second limit switch 2SQ are closed at；
When first intermediate relay 1KA closure is powered, first intermediate relay the first contact 1KA-1 closure, the first intermediate relay
Device the second contact 1KA-2 is disconnected；When first intermediate relay 1KA disconnects power loss, first intermediate relay the first contact 1KA-1 is disconnected
It opens, first intermediate relay the second contact 1KA-2 closure；
When second intermediate relay 2KA closure is powered, second intermediate relay the first contact 2KA-1 closure, the second intermediate relay
Device the second contact 2KA-2 is disconnected；When second intermediate relay 2KA disconnects power loss, second intermediate relay the first contact 2KA-1 is disconnected
It opens, second intermediate relay the second contact 2KA-2 closure；
When first A.C. contactor 1KM is powered, first A.C. contactor the first contact 1KM-1 is disconnected, the first A.C. contactor the
Two contact 1KM-2 closure, the first A.C. contactor third contact 1KM-3 closure；When the first A.C. contactor 1KM power loss, first
A.C. contactor the first contact 1KM-1 closure, first A.C. contactor the second contact 1KM-2 are disconnected, the first A.C. contactor the
Three contact 1KM-3 are disconnected；
When second A.C. contactor 2KM is powered, second A.C. contactor the first contact 2KM-1 is disconnected, the second A.C. contactor the
Two contact 2KM-2 closure, the second A.C. contactor third contact 2KM-3 closure；When the second A.C. contactor 2KM power loss, second
A.C. contactor the first contact 2KM-1 closure, second A.C. contactor the second contact 2KM-2 are disconnected, the second A.C. contactor the
Three contact 2KM-3 are disconnected.
Specifically, first the first contact of A.C. contactor 1KM-1 is also parallel with low speed raising switch SB-2, so as to logical
Cross the on-off for manually controlling low speed hoisting circuit.
Specifically, the present invention also provides a kind of switching sides of high low speed automatic switchover system for rescue boat removal process
Method, comprising the following steps:
1) in initial reclamation state, rotary suspension arm 1 is in the state that hangs out, and the first limiting device 4 is pressed in the holding of spacing collision block 5, from
And realize that third limit switch 3SQ is closed, and then realize the normally opened contact 3SQ-1 closure of third limit switch 3SQ, normally-closed contact
3SQ-2 is disconnected；First A.C. contactor 1KM, the second A.C. contactor 2KM all no powers at this time, thus the first A.C. contactor
Third contact 1KM-3, the second A.C. contactor third contact 2KM-3 are disconnected, and driving motor M does not work；
2) after pressing high-speed lifting switch SB-1, the second intermediate relay 2KA closure is powered, the touching of the second intermediate relay first
Head 2KA-1 closure, second intermediate relay the second contact 2KA-2 are disconnected, and the second A.C. contactor 2KM is powered, and the second exchange connects
Tentaculum the second contact 2KM-2 closure, the second A.C. contactor third contact 2KM-3 closure, driving motor M high-speed cruising will be rescued
Ship is helped to recycle from marine high speed；
3) when rescue boat, which rises, is raised to upturned position, rotary suspension arm 1 leaves fixed cantilever crane 2, the limit being mounted on fixed cantilever crane 2
Collision block 5 follows the pressing for synchronizing and leaving and unclamp to the first limiting device 4, and third limit switch 3SQ is disconnected at this time, third limit
The normally opened contact 3SQ-1 of switch 3SQ is disconnected, normally-closed contact 3SQ-2 closure, thus, 2KA-1 is disconnected at this time, the second ac contactor
Device 2KM power loss, driving motor M stops high-speed cruising, while the first intermediate relay 1KA closure is powered, the first A.C. contactor
1KM is powered, first A.C. contactor the second contact 1KM-2 closure, the first A.C. contactor third contact 1KM-3 closure, and first
A.C. contactor the first contact 1KM-1 closure, the operation of driving motor M low speed；
4) when rotary suspension arm 1 is recovered at a slow speed at fixed cantilever crane 2, rotary suspension arm 1 bumps against the second limiting device 6 again and makes the second limit
Position device 6 is pressed, and the first limit switch 1SQ and the second limit switch 2SQ are simultaneously switched off, and cuts off circuit, and driving motor M stops
Operation.
To realize in electronic recycling rescue boat, first to rise rescue boat at a high speed, then rescue boat recycled to pre- with low speed
Positioning is set, and guarantees whole process steadily stable progress, avoids making kayak body rock severity due to recycling excessive velocities, while also keeping away
It exempts from rescue boat and fixed cantilever crane when putting rescue boat and sharp impacts occurs
Taking the above-mentioned ideal embodiment according to the present invention as inspiration, through the above description, relevant staff completely may be used
Without departing from the scope of the technological thought of the present invention', to carry out various changes and amendments.The technical model of this invention
It encloses and is not limited to the contents of the specification, it is necessary to which the technical scope thereof is determined according to the scope of the claim.
Claims (3)
1. a kind of high low speed automatic switchover system for rescue boat removal process, including rotary suspension arm (1) and fixed cantilever crane
(2), the fixed cantilever crane (2) includes outer column (2-1) and inner column (2-2), and setting is stretched out on the inner column (2-2)
Have rotary shaft (3), one end of the rotary suspension arm (1) rotates to realize the decentralization and recycling of rescue boat around rotary shaft (3)；Its
It is characterized in that: being provided with the first limiting device (4) and spacing collision block (5) on the inside of the outer column (2-1), described interior vertical
The second limiting device (6) are provided on the inside of column (2-2)；
Be provided in the circuit for controlling motor of the high low speed automatic switchover system high-speed lifting circuit, low speed hoisting circuit, with
And stable position circuit；And wherein high-speed lifting circuit, low speed hoisting circuit and stable position circuit are parallel with one another；It is described
The output end of circuit for controlling motor connects driving motor (M)；
In the high-speed lifting circuit, including high-speed lifting interconnected switch (SB-1), the first limit switch (3SQ),
First intermediate relay (1KA) and the second intermediate relay (2KA), and wherein among the first intermediate relay (1KA) and second
Relay (2KA) is parallel with one another, and high-speed lifting switchs (SB-1), third limit switch (3SQ) and the first intermediate relay
(1KA) is serially connected with any one in the second intermediate relay (2KA)；
In the low speed hoisting circuit, including be serially connected first the first contact of intermediate relay (1KA-1), among second
The second contact of relay (2KA-2), second the first contact of A.C. contactor (2KM-1), the first electrothermal relay (1FR) and first
A.C. contactor (1KM)；
In the stable position circuit, including be serially connected second the first contact of intermediate relay (2KA-1), among first
The second contact of relay (1KA-2), first A.C. contactor the first contact the first contact of the first A.C. contactor (1KM-1),
Two electrothermal relays (2FR) and the second A.C. contactor (2KM)；
It further include the first limit switch with the high-speed lifting circuit, low speed hoisting circuit and stable position circuit in series
(1SQ) and the second limit switch (2SQ), and the first limit switch (1SQ) and the second limit switch (2SQ) are serially connected；
And wherein,
When first limiting device (4) is pressed, third limit switch (3SQ) closure, third limit switch (3SQ)
Normally opened contact (3SQ-1) closure, normally-closed contact (3SQ-2) disconnect；It is described when first limiting device (4) is released reset
Third limit switch (3SQ) disconnects, and the normally opened contact of third limit switch (3SQ) disconnects, normally-closed contact closure；
When second limiting device (6) is pressed, first limit switch (1SQ) and the second limit switch (2SQ) are simultaneously
It disconnects；When second limiting device (6) is released reset, first limit switch (1SQ) and the second limit switch (2SQ)
It is closed at；
When first intermediate relay (1KA) closure is powered, first the first contact of intermediate relay (1KA-1) closure, first
The second contact of intermediate relay (1KA-2) disconnects；When first intermediate relay (1KA) disconnects power loss, the first intermediate relay the
One contact (1KA-1) disconnects, first the second contact of intermediate relay (1KA-2) closure；
When second intermediate relay (2KA) closure is powered, second the first contact of intermediate relay (2KA-1) closure, second
The second contact of intermediate relay (2KA-2) disconnects；When second intermediate relay (2KA) disconnects power loss, the second intermediate relay the
One contact (2KA-1) disconnects, second the second contact of intermediate relay (2KA-2) closure；
When first A.C. contactor (1KM) is powered, first the first contact of A.C. contactor (1KM-1) is disconnected, the first exchange
The second contact of contactor (1KM-2) closure, the first A.C. contactor third contact (1KM-3) closure；First A.C. contactor
When (1KM) power loss, first the first contact of A.C. contactor (1KM-1) closure, first the second contact of A.C. contactor (1KM-2) breaks
It opens, the first A.C. contactor third contact (1KM-3) disconnects；
When second A.C. contactor (2KM) is powered, second the first contact of A.C. contactor (2KM-1) is disconnected, the second exchange
The second contact of contactor (2KM-2) closure, the second A.C. contactor third contact (2KM-3) closure；Second A.C. contactor
When (2KM) power loss, second the first contact of A.C. contactor (2KM-1) closure, second the second contact of A.C. contactor (2KM-2) breaks
It opens, the second A.C. contactor third contact (2KM-3) disconnects.
2. a kind of high low speed automatic switchover system for rescue boat removal process according to claim 1, feature exist
In: first contact of the first A.C. contactor (1KM-1) is also parallel with low speed raising switch (SB-2).
3. a kind of high low speed automatic switchover system for rescue boat removal process described in any one of -2 according to claim 1
Switching method, it is characterised in that: the following steps are included:
1) in initial reclamation state, rotary suspension arm (1) is in the state that hangs out, and the first limiting device is pressed in spacing collision block (5) holding
(4), to realize that third limit switch (3SQ) is closed, and then the normally opened contact (3SQ-1) of third limit switch (3SQ) is realized
Closure, normally-closed contact (3SQ-2) disconnect；
2) after pressing high-speed lifting switch (SB-1), the second intermediate relay (2KA) closure is powered, the second intermediate relay the
One contact (2KA-1) closure, second the second contact of intermediate relay (2KA-2) disconnect, and the second A.C. contactor (2KM) is powered,
Second the second contact of A.C. contactor (2KM-2) closure, the second A.C. contactor third contact (2KM-3) closure, driving motor
(M) high-speed cruising recycles rescue boat from marine high speed；
3) when rescue boat, which rises, is raised to upturned position, rotary suspension arm (1) leaves fixed cantilever crane (2), is mounted on fixed cantilever crane (2)
Spacing collision block (5) follow the pressing for synchronizing and leaving and unclamp to the first limiting device (4), third limit switch (3SQ) at this time
It disconnecting, the normally opened contact (3SQ-1) of third limit switch (3SQ) disconnects, normally-closed contact (3SQ-2) closure, thus, at this time
(2KA-1) is disconnected, the second A.C. contactor (2KM) power loss, and driving motor (M) stops high-speed cruising, while the first intermediate relay
Device (1KA) closure is powered, and the first A.C. contactor (1KM) is powered, first the second contact of A.C. contactor (1KM-2) closure, the
One A.C. contactor third contact (1KM-3) closure, first the first contact of A.C. contactor (1KM-1) closure, driving motor (M)
Low speed operation；
4) when rotary suspension arm (1) is recovered at a slow speed at fixed cantilever crane (2), rotary suspension arm (1) bumps against the second limiting device (6) again to be made
It obtains the second limiting device (6) to be pressed, the first limit switch (1SQ) and the second limit switch (2SQ) simultaneously switch off, cutting electricity
Road, driving motor (M) are out of service.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910779749.3A CN110526133B (en) | 2019-08-22 | 2019-08-22 | High-low speed automatic switching system and switching method for rescue boat recycling process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910779749.3A CN110526133B (en) | 2019-08-22 | 2019-08-22 | High-low speed automatic switching system and switching method for rescue boat recycling process |
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| CN110526133B CN110526133B (en) | 2024-02-02 |
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| CN210558994U (en) * | 2019-08-22 | 2020-05-19 | 中船绿洲镇江船舶辅机有限公司 | High-low speed automatic switching system for rescue boat recovery process |
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