CN110143521A - Sync detection device and method under a kind of double lifting mechanism friction speeds - Google Patents
Sync detection device and method under a kind of double lifting mechanism friction speeds Download PDFInfo
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- CN110143521A CN110143521A CN201910376068.2A CN201910376068A CN110143521A CN 110143521 A CN110143521 A CN 110143521A CN 201910376068 A CN201910376068 A CN 201910376068A CN 110143521 A CN110143521 A CN 110143521A
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/48—Automatic control of crane drives for producing a single or repeated working cycle; Programme control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/50—Applications of limit circuits or of limit-switch arrangements
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Abstract
Sync detection device and method under a kind of double lifting mechanism friction speeds, belong to overhead traveling crane detection device and method and technology field, detect for the synchronous regime of double lifting mechanisms to overhead traveling crane at various speeds.Its technical solution is: detecting the rotation of main hook winch drum and auxiliary hook reel respectively by being installed on two close switches at main hook winch drum and auxiliary hook reel, it is compared to realize synchronous detection with according to different stalls standard gear revolving speed time calculation formula calculated interval time according to rotation interval length, once it was found that spool turns interval time is greater than the delay time of time-delay relay, illustrate main hook, auxiliary hook is asynchronous, asynchronous signal is issued immediately while arriving main hook speed regulation device and auxiliary hook speed regulation device, it is simultaneously stopped main hook speed regulation device and auxiliary hook speed regulation device, avoid mechanism asynchronous.The present invention can detect the synchronous regime of double lifting mechanisms at various speeds, eliminate security risk, prevent steel scrap bucket and tumble the safety accident of unrestrained steel scrap.
Description
Technical field
The present invention relates to a kind of double lifting mechanisms sync detection device at various speeds of linkage lifting overhead traveling crane and sides
Method belongs to overhead traveling crane detection device and method and technology field.
Background technique
In smelter steelmaking process, it is generally adopted by the steel scrap bucket handling overhead traveling crane of converter addition steel scrap double
Lifting mechanism, main hook are plate hook, and auxiliary hook is common gib head, and overhead traveling crane is provided with single action, linkage selection, in steel scrap bucket raising, landing
When, linkage position, two hooks, one piece of raising, landing are got to, other times select single action.Since overhead traveling crane lifting mechanism is generally adopted
It is U.S. permanent pressure-speed regulating device, commutation realizes positive and negative rotation commutation by contactor, therefore in actual use, due to adjusting
The reasons such as fast device failure or contactor card resistance will cause some mechanism situation motionless suddenly and occur.This is in single hook situation
Under, there is no problem, and in double hook operation, motionless suddenly in case of a hook, another hook continues to act, then can make
It is tilted at steel scrap bucket, steel scrap is trickled down into ground, causes very big security risk, it every year all can be because double in steel mill actual production
The case where steel scrap is trickled down ground several times by lifting mechanism asynchronous appearance.Double rise all is not accounted for when domestic overhead traveling crane design at present
Rise the synchronization test problems of mechanism, the overspeed protection only realized by overspeed switch in actual design, without in other detections
Hold, this is a major safety risks existing for current overhead traveling crane, it would be highly desirable to be solved.
Summary of the invention
Technical problem to be solved by the invention is to provide the sync detection devices under a kind of double lifting mechanism friction speeds
And method, this synchronous detection equipment and method can be tested by the drum speed to main hook and auxiliary hook to detect main hook and pair
The synchronous regime of hook, and can find main hook and auxiliary hook there are it is asynchronous when stop the operation of overhead traveling crane lifting mechanism in time, disappear
Except security risk, prevents steel scrap bucket and tumble the safety accident of unrestrained steel scrap.
The technical solution for solving above-mentioned technical problem is:
A kind of sync detection device under double lifting mechanism friction speeds, it includes main hook winch drum rotation detection buting iron, auxiliary hook volume
Cylinder rotation detection buting iron, main hook winch drum rotate detection close to switch, the close switch of auxiliary hook spool turns detection, synchronous logic judgement
Controller, main hook winch drum rotation detection buting iron, auxiliary hook spool turns detection buting iron are separately mounted to main hook winch drum and auxiliary hook reel
On, main hook winch drum rotation detection is separately mounted to main hook winch drum and auxiliary hook close to switch and the detection of auxiliary hook spool turns close to switch
The side of reel, main hook winch drum rotation detection turn with main hook winch drum respectively close to switch and the detection of auxiliary hook spool turns close to switch
Dynamic detection buting iron and auxiliary hook spool turns detection buting iron are opposite, and main hook winch drum rotation is detected close to switch normally-closed contact and auxiliary hook volume
Cylinder rotation detection judges that controller is connected with synchronous logic respectively close to switch normally-closed contact, gear signal normally opened contact, packet
Main hook gear relay gear normally opened contact and auxiliary hook gear relay gear normally opened contact are included, judges to control with synchronous logic respectively
Device processed is connected, synchronous logic judge controller export two normal open switch amount signals respectively with main hook speed regulation device, auxiliary hook tune
Speed variator is connected.
Sync detection device under above-mentioned double lifting mechanism friction speeds, the synchronous logic judge that controller includes main hook
Synchronous detection logic circuit, the synchronous detection logic circuit, the asynchronous relay of major-minor hook of auxiliary hook, the synchronous detection logic circuit of main hook
Detection logic circuit synchronous with auxiliary hook is respectively by main hook gear Rotating speed measring time-delay relay, main hook lock-on relay, auxiliary hook shelves
Position Rotating speed measring time-delay relay, auxiliary hook lock-on relay composition, the synchronous detection logic circuit of main hook, the synchronous detection logic of auxiliary hook
Circuit and the asynchronous relay of major-minor hook are in parallel, main hook lock-on relay normally opened contact, auxiliary hook lock-on relay normally opened contact
Relay coil asynchronous with major-minor hook is connected in series, and synchronous logic judges that the asynchronous relay of the major-minor hook of controller exports two
Normally opened contact respectively to main hook speed regulation device, auxiliary hook speed regulation device control loop power supply common wire on.
Sync detection device under above-mentioned double lifting mechanism friction speeds, the main hook of the synchronous detection logic circuit of the main hook
The normally opened contact of gear Rotating speed measring time-delay relay and main hook gear relay is connected in series, the touching of main hook gear relay normally open
Point detection synchronous with main hook is connected in series close to switch normally-closed contact, meanwhile, main hook lock-on relay and main hook gear revolving speed are examined
It surveys time-delay relay to be in parallel, main hook lock-on relay coil and the normally closed delay of main hook gear Rotating speed measring time-delay relay disconnect
Contact series connection.
Sync detection device under above-mentioned double lifting mechanism friction speeds, the auxiliary hook of the synchronous detection logic circuit of the auxiliary hook
Gear Rotating speed measring time-delay relay and auxiliary hook gear relay normally open contact are connected in series, auxiliary hook gear relay normally open contact
Detection synchronous with auxiliary hook is connected in series close to switch normally-closed contact, meanwhile, auxiliary hook lock-on relay and auxiliary hook gear Rotating speed measring
Time-delay relay is in parallel, and auxiliary hook lock-on relay coil and the normally closed delay of auxiliary hook gear Rotating speed measring time-delay relay are disconnected and being touched
Point is connected in series.
A kind of synchronization detecting method under double lifting mechanism friction speeds using above-mentioned apparatus, it using following steps into
Row:
A. when overhead traveling crane is in linkage status, signal is gone up and down by main hook master controller and is issued to main hook gear relay, main hook
Gear relay issues corresponding gear signal, and main hook winch drum and auxiliary hook reel start turning, while gear signal is sent to synchronization
Logic judgment controller；
B. it is installed on main hook winch drum, the main hook winch drum rotation detection at auxiliary hook reel connects close to switch and the detection of auxiliary hook spool turns
Closely begin through the main hook winch drum rotation detection buting iron for being installed on main hook winch drum and auxiliary hook reel and the inspection of auxiliary hook spool turns
The action situation of buting iron detection main hook winch drum, auxiliary hook reel, and the normally closed switch amount signal condition that will test are surveyed, is sent in real time
Controller is judged to synchronous logic；
C. synchronous logic judges that controller starts main hook gear Rotating speed measring time-delay relay, auxiliary hook according to the gear signal received
Acquisition main hook winch drum is rotated to detect close to switch and auxiliary hook spool turns and detects close open by gear Rotating speed measring time-delay relay
The normally closed switch amount signal interval and main hook gear Rotating speed measring time-delay relay of pass, the delay of auxiliary hook gear Rotating speed measring after
The setting delay time of electric appliance is compared, once being greater than setting time interval, illustrates main hook winch drum, auxiliary hook spool turns not just
Often, main hook, the asynchronous signal of auxiliary hook are issued to main hook speed regulation device and auxiliary hook speed regulation device, keeps main hook winch drum, auxiliary hook reel same
When stop operating immediately.
D. synchronous logic judges that the asynchronous relay of the major-minor hook of controller exports two normally opened contacts and arrives main hook tune respectively
Speed variator, auxiliary hook speed regulation device control loop power supply common wire on, once monitoring major-minor hook, any one is asynchronous, major-minor hook
The normally opened contact of asynchronous relay output disconnects, while cutting off the control loop electricity of main hook speed regulation device, auxiliary hook speed regulation device
Source common wire power supply, to control major-minor hook stopping movement.
Synchronization detecting method under above-mentioned double lifting mechanism friction speeds, main hook gear Rotating speed measring time-delay relay, pair
The setting delay time of hook position Rotating speed measring time-delay relay is calculated according to standard gear revolving speed time calculation formula
The standard gear time carries out delay time setting to each gear Rotating speed measring time-delay relay of major and minor hook respectively；
Standard gear revolving speed time calculation formula:
Vi=(60/(Ne/I*Vdi)*β
Wherein:
Vi is standard file bit rate time (unit: second)
Ne is Rated motor revolving speed (unit: rev/min)
I is transmission ratio
Vdi is gear speed (percentage)
β is smoothing factor
The beneficial effects of the present invention are:
The present invention detects main hook winch drum and auxiliary hook by being installed on two close switches at main hook winch drum and auxiliary hook reel respectively
The rotation of reel is calculated by the actual rotation interval time measured and according to different stalls standard gear revolving speed time calculation formula
Interval time out is compared to realize synchronous detection, once discovery spool turns interval time is greater than prolonging for time-delay relay
When the time, illustrate that main hook, auxiliary hook are asynchronous, issue immediately asynchronous signal and meanwhile arrive to main hook speed regulation device and auxiliary hook speed regulation dress
It sets, is simultaneously stopped main hook speed regulation device and auxiliary hook speed regulation device, avoids mechanism asynchronous.
The present invention is the sync detection device of double lifting mechanisms and initiating for method, and this synchronous detection equipment and method can
To detect the synchronous regime of main hook and auxiliary hook by the test of drum speed to main hook and auxiliary hook, and can in discovery main hook and
Auxiliary hook there are it is asynchronous when stop the operation of overhead traveling crane lifting mechanism in time, eliminate security risk, prevent steel scrap bucket and tumble
The safety accident of unrestrained steel scrap, ensure that going on smoothly for production.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the sync detection device under double lifting mechanism friction speeds of the invention；
Fig. 2 is the circuit diagram that synchronous logic judges controller.
It is marked in figure as follows: main hook winch drum rotation detection buting iron 1, auxiliary hook spool turns detection buting iron 2, main hook winch drum rotation
It detects to detect close to switch 3, auxiliary hook spool turns close to switch 4, gear signal 5, synchronous logic and judges controller 6, main hook tune
The synchronous detection logic circuit 11 of speed variator 7, auxiliary hook speed regulation device 8, main hook winch drum 9, auxiliary hook reel 10, main hook, the synchronous inspection of main hook
Survey close to switch normally-closed contact 12, the normally closed delay break contact 13 of main hook gear Rotating speed measring time-delay relay, main hook gear after
Electric appliance normally opened contact 14, main hook gear Rotating speed measring time-delay relay 15, main hook lock-on relay 16, auxiliary hook lock-on relay
17, main hook lock-on relay normally opened contact 18, auxiliary hook lock-on relay normally opened contact 19, the asynchronous relay 20 of major-minor hook, pair
The synchronous detection logic circuit 21 of hook.
(the synchronous detection logic circuit 11 of main hook detection 21 structure of logic circuit synchronous with auxiliary hook is identical, synchronous to auxiliary hook to examine
The all parts for surveying logic circuit 21 no longer mark one by one).
Specific embodiment
The present invention creatively proposes a kind of device and method for realizing the synchronous detection of double lifting mechanisms close to switch,
By realizing that synchronous detection did not had in overhead traveling crane design close to switch.The present invention is by being installed on main hook winch drum 9 and pair
Main hook winch drum rotation at hook reel 10 detects to detect close to switch 3, auxiliary hook spool turns close to switch 4 detects main hook volume respectively
The rotation of cylinder 9 and auxiliary hook reel 10, by actually measured rotation interval time and according to the different stalls standard gear revolving speed time
Calculation formula calculated interval time is compared to realize synchronous detection.In view of although overhead traveling crane lifting electric motor rotates speed
Degree is very fast, and revolving speed is eventually transferred into the rotation of reel generally at 700 revs/min or so, but after the deceleration of the no-load voltage ratio of speed reducer
Speed only has 20 revs/min or so, so as to realize the synchronous detection of revolving speed using close to switch.Simultaneously according to motor speed, change
Than calculating the gear revolving speed time with different gear signals, multiplied by a smoothing factor, show that theoretical gear speed is corresponding
Theoretical gear Velocity Time, using calculated each gear theoretical time as main hook gear Rotating speed measring time-delay relay 15,
The delay time of auxiliary hook gear Rotating speed measring time-delay relay and the spool turns signal interval actually detected close to switch
Compared in real time, once discovery spool turns interval time is greater than the delay time of time-delay relay, illustrates main hook and auxiliary hook
It is asynchronous, asynchronous signal is issued immediately while arriving main hook speed regulation device 7 and auxiliary hook speed regulation device 8, makes 7 He of main hook speed regulation device
Auxiliary hook speed regulation device 8 is simultaneously stopped the operation of main hook winch drum 9, auxiliary hook reel 10, avoids mechanism asynchronous.
Fig. 1 shows that the sync detection device under double lifting mechanism friction speeds of the invention includes main hook winch drum rotation inspection
Survey buting iron 1, auxiliary hook spool turns detect buting iron 2, main hook winch drum rotation is detected and approached close to switch 3, the detection of auxiliary hook spool turns
Switch 4, synchronous logic judge controller 6.
Fig. 1 shows that main hook winch drum rotation detection buting iron 1, auxiliary hook spool turns detection buting iron 2 are separately mounted to main hook winch drum
9 and auxiliary hook reel 10 on, main hook winch drum rotation is detected installs respectively close to switch 3 and the close switch 4 of auxiliary hook spool turns detection
In the side of main hook winch drum 9 and auxiliary hook reel 10, main hook winch drum rotation detects close close to switch 3 and the detection of auxiliary hook spool turns
Switch 4 rotates detection buting iron 1 with main hook winch drum respectively and auxiliary hook spool turns detection buting iron 2 is opposite, acquires main hook winch drum 9 respectively
With the revolution signal of auxiliary hook reel 10.
Fig. 1 shows, main hook winch drum rotation is detected close to switch 3 and the close switch 4 of auxiliary hook spool turns detection respectively and together
Step logic judgment controller 6 is connected, and judges that controller 6 issues the revolution of main hook winch drum 9 and auxiliary hook reel 10 to synchronous logic
Signal.5 normally opened contact of gear signal (including main hook gear relay normally open contact and auxiliary hook gear relay normally open contact) with
Synchronous logic judges that controller 6 is connected, and judges that controller 6 issues gear signal 5 to synchronous logic.In above two signal
Under collective effect, synchronous logic judge controller 6 respectively to main hook speed regulation device 7, auxiliary hook speed regulation device 8 sending continue to run or
Signal out of service.
Fig. 2 shows that synchronous logic judges that controller 6 includes that main hook synchronizes detection logic circuit 11, auxiliary hook synchronizes detection and patrols
Collect circuit 21, the asynchronous relay 20 of major-minor hook.The synchronous detection logic circuit 11 of main hook detection logic circuit 21 synchronous with auxiliary hook
Respectively by main hook gear Rotating speed measring time-delay relay 15, main hook lock-on relay 16, auxiliary hook gear Rotating speed measring delay relay
Device, auxiliary hook lock-on relay 17 form, the synchronous detection logic circuit 11 of main hook, the synchronous detection logic circuit 21 of auxiliary hook and major-minor hook
Asynchronous relay 20 is in parallel, main hook lock-on relay normally opened contact 18, auxiliary hook lock-on relay normally opened contact 19 and major-minor
Asynchronous 20 coil of relay of hook is connected in series.
Fig. 2 shows that main hook synchronizes the main hook gear Rotating speed measring time-delay relay 15 and main hook shelves of detection logic circuit 11
Position relay normally open contact 14 is connected in series, and the detection synchronous with main hook of main hook gear relay normally open contact 14 is normally closed close to switching
Contact 12 is connected in series.When main hook gear relay issues corresponding gear signal, corresponding main hook gear relay normally open touching
Normally opened contact closure in point 14, at this point, if main hook winch drum rotation is detected close to switch 3 and main hook winch drum rotation detection
1 position of buting iron is not overlapped, and the synchronous detection of main hook is closed close to switch normally-closed contact 12.
Meanwhile main hook lock-on relay 16 is in parallel with main hook gear Rotating speed measring time-delay relay 15, main hook gear turns
The coil series connection of fast detection delay relay normally closed delay break contact 13 and main hook lock-on relay 16.When main hook gear
When relay issues corresponding gear signal, if main hook winch drum rotation is detected close to switch 3 and main hook winch drum rotation detection buting iron 1
The time of coincidence is not above the delay time that corresponding main hook gear Rotating speed measring time-delay relay is set for position, and main hook is synchronous
16 coil of relay keeps energized action.
Fig. 2 shows that the synchronous detection logic circuit 11 of main hook detection 21 structure of logic circuit synchronous with auxiliary hook is identical, to auxiliary hook
The all parts of synchronous detection logic circuit 21 no longer mark one by one.
The auxiliary hook gear Rotating speed measring time-delay relay and auxiliary hook gear relay of the synchronous detection logic circuit 21 of auxiliary hook
Normally opened contact is connected in series, and the detection synchronous with auxiliary hook of auxiliary hook gear relay normally open contact connects close to switch normally-closed contact series connection
It connects.When auxiliary hook gear relay issues corresponding gear signal, one in corresponding auxiliary hook gear relay normally open contact is often
Contact closure is opened, at this point, not weighing if auxiliary hook spool turns are detected close to switch 4 and auxiliary hook spool turns detection 2 position of buting iron
It closes, the close switch normally-closed contact closure of the synchronous detection of auxiliary hook.
Meanwhile auxiliary hook lock-on relay is in parallel with auxiliary hook gear Rotating speed measring time-delay relay, the inspection of auxiliary hook gear revolving speed
The coil for surveying the normally closed delay break contact of time-delay relay and auxiliary hook lock-on relay is connected in series.When auxiliary hook gear relay is sent out
Out when corresponding gear signal, do not weighed if auxiliary hook spool turns are detected close to switch 4 and auxiliary hook spool turns detection 2 position of buting iron
The conjunction time is not above the delay time of corresponding auxiliary hook gear Rotating speed measring time-delay relay setting, auxiliary hook lock-on relay 17
Coil keeps energized action.
Synchronous logic judges that the asynchronous relay of major-minor hook (20) of controller (6) exports two normally opened contacts and arrives master respectively
Hook speed regulation device (7), auxiliary hook speed regulation device (8) control loop power supply common wire on, once monitor major-minor hook any one not
Synchronous, the normally opened contact of the asynchronous relay of major-minor hook (20) output disconnects, while cutting off main hook speed regulation device (7), auxiliary hook tune
The control loop power supply common wire of speed variator (8) is powered, to control major-minor hook stopping movement.
Synchronization detecting method under double lifting mechanism friction speeds of the invention, it is carried out using following steps:
A. when overhead traveling crane is in linkage status, signal is gone up and down by main hook master controller and is issued to main hook gear relay, main hook
Gear relay issues corresponding gear signal, and main hook winch drum 9 and auxiliary hook reel 10 start turning, while gear signal 5 is sent to
Synchronous logic judges controller 6.
B. it is installed on main hook winch drum 9, the main hook winch drum rotation at auxiliary hook reel 10 is detected close to switch 3 and auxiliary hook reel turn
Dynamic detect begins through the main hook winch drum rotation detection buting iron 1 for being installed on main hook winch drum 9 and auxiliary hook reel 10 and pair close to switch 4
Hook spool turns detect the action situation that buting iron 2 detects main hook winch drum 9, auxiliary hook reel 10, and the normally closed rotation that will test is opened
Signal is measured in pass, is sent to synchronous logic in real time and judges controller 6.
C. synchronous logic judges that controller 6 starts main hook gear Rotating speed measring delay relay according to the gear signal 5 received
Device 15, auxiliary hook gear Rotating speed measring time-delay relay detect acquisition main hook winch drum rotation close to switch 3 and auxiliary hook spool turns
Detect the normally closed switch amount signal interval and main hook gear Rotating speed measring time-delay relay 15, auxiliary hook gear close to switch 4
The setting delay time of Rotating speed measring time-delay relay is compared, once be greater than setting time interval, illustrate main hook winch drum 9,
Auxiliary hook reel 10 rotate it is abnormal, issue main hook, the asynchronous signal of auxiliary hook to main hook speed regulation device 7 and auxiliary hook speed regulation device 8, make
Main hook winch drum 9, auxiliary hook reel 10 stop operating immediately simultaneously.
In synchronization detecting method under double lifting mechanism friction speeds of the invention, main hook gear Rotating speed measring delay relay
Device 15, auxiliary hook gear Rotating speed measring time-delay relay setting delay time be according to standard gear revolving speed time calculation formula meter
The standard gear time of calculating carries out delay time setting to each gear Rotating speed measring time-delay relay of major and minor hook respectively；
Standard gear revolving speed time calculation formula:
Vi=(60/(Ne/I*Vdi)*β
Wherein:
Vi is standard file bit rate time (unit: second)
Ne is Rated motor revolving speed (unit: rev/min)
I is transmission ratio
Vdi is gear speed (percentage)
β is smoothing factor
One embodiment of sync detection device under double lifting mechanism friction speeds of the invention is as follows:
Main hook winch drum rotation detection buting iron 1 is the cuboid of long 30CM, width 10CM, thickness 2CM；
Auxiliary hook spool turns detect the cuboid that buting iron 2 is long 30CM, width 10CM, thickness 2CM；
Main hook winch drum rotation detects the model IFL 15-30L- detected close to switch 3, auxiliary hook spool turns close to switch 4
11TP-1766 ,NO+NC；
The model BDCH1200 380B of main hook speed regulation device 7, auxiliary hook speed regulation device 8；
The model CAD50 B7C+ of main hook gear Rotating speed measring time-delay relay 15, auxiliary hook gear Rotating speed measring time-delay relay
LADT2 0.1~30S；
The model CAD50 B7C of main hook lock-on relay 16, auxiliary hook lock-on relay 17；
The model CAD50 B7C of the asynchronous relay 20 of major-minor hook.
After the present invention is applied to Handan Iron and Steel Co Handan treasured steel mill, caused in steel scrap bucket lifting process because major-minor hook reel is asynchronous
Inclination is generated, the accident on the unrestrained ground of steel scrap has obtained thoroughly preventing, and it avoids safety accident and influences production, safety and life
Produce considerable benefit.
Rotation detection time of the invention can be adjusted according to concrete application field condition according to algorithmic formula in real time,
The theoretical gear time for only needing to calculate each gear according to the formula that this method provides, then set it to major and minor hook
At this moment the setting delay time of position Rotating speed measring time-delay relay need to only acquire gear signal and rotate detection switch close to switch
It measures signal and judges controller to synchronous logic, so that it may meet different live needs, less investment of the present invention, reliable operation pushes away
Wide property is strong, substantially belongs to non-maintaining once coming into operation, can be generalized to domestic double driving mechanism has synchronous desired large-scale overhead traveling crane
On, either existing overhead traveling crane transformation or newly upper overhead traveling crane increase design can facilitate realization, economic and social benefit is very
It is considerable.
It can add 90 tons of steel scrap by avoiding a steel scrap from trickling down, 1000 yuan of ton benefit, avoid within 1 year 4 unrestrained calculating,
Year generation economic benefit: 90*1000*4=360,000 yuan.In addition, avoiding the safety benefit of unrestrained generation inestimable.
Claims (6)
1. the sync detection device under a kind of double lifting mechanism friction speeds, it is characterised in that: it includes main hook winch drum rotation inspection
Survey buting iron (1), auxiliary hook spool turns detection buting iron (2), the close switch (3) of main hook winch drum rotation detection, the inspection of auxiliary hook spool turns
It surveys and judges controller (6) close to switch (4), synchronous logic, main hook winch drum rotation detection buting iron (1), the detection of auxiliary hook spool turns
Buting iron (2) is separately mounted on main hook winch drum (9) and auxiliary hook reel (10), and main hook winch drum rotation detection is (3) and secondary close to switching
The detection of hook spool turns is separately mounted to the side of main hook winch drum (9) and auxiliary hook reel (10) close to switch (4), and main hook winch drum turns
Dynamic detection detected respectively with main hook winch drum rotation close to switch (3) and the detection of auxiliary hook spool turns close to switch (4) buting iron (1) and
Auxiliary hook spool turns detect buting iron (2) relatively, and main hook winch drum rotation detection is close close to switch (3) and the detection of auxiliary hook spool turns
Switch (4) judges that controller (6) is connected with synchronous logic respectively, main hook gear relay normally open contact (14) and auxiliary hook gear
Relay normally open contact judges that controller (6) is connected with synchronous logic respectively, synchronous logic judge controller (6) respectively with master
Hook speed regulation device (7), auxiliary hook speed regulation device (8) are connected.
2. the sync detection device under double lifting mechanism friction speeds according to claim 1, it is characterised in that: described same
Step logic judgment controller (6) includes synchronous detection logic circuit (11) of main hook, synchronous detection logic circuit (21), major-minor of auxiliary hook
The asynchronous relay of hook (20), synchronous detection logic circuit (11) of main hook detection logic circuit (21) synchronous with auxiliary hook is respectively by leading
Hook position Rotating speed measring time-delay relay (15), main hook lock-on relay (16), auxiliary hook gear Rotating speed measring time-delay relay, pair
Hook lock-on relay (17) composition, synchronous detection logic circuit (11) of main hook, synchronous detection logic circuit (21) of auxiliary hook and major-minor
The asynchronous relay of hook (20) is in parallel, main hook lock-on relay normally opened contact (18), auxiliary hook lock-on relay normally opened contact
(19) relay (20) coil asynchronous with major-minor hook is connected in series；
Synchronous logic judges that the asynchronous relay of major-minor hook (20) of controller exports two normally opened contacts and arrives main hook speed regulation respectively
Device (7), auxiliary hook speed regulation device (8) control loop power supply common wire on.
3. the sync detection device under double lifting mechanism friction speeds according to claim 1, it is characterised in that: the master
The main hook gear Rotating speed measring time-delay relay (15) and main hook gear relay normally open of synchronous detection logic circuit (11) of hook touch
Point (14) is connected in series, and main hook gear relay normally open contact (14) detection synchronous with main hook is gone here and there close to switch normally-closed contact (12)
Connection connection, meanwhile, main hook lock-on relay (16) is in parallel with main hook gear Rotating speed measring time-delay relay (15), main hook gear
The coil of normally closed delay break contact (13) of Rotating speed measring time-delay relay and main hook lock-on relay (16) is connected in series.
4. the sync detection device under double lifting mechanism friction speeds according to claim 1, it is characterised in that: the pair
The auxiliary hook gear Rotating speed measring time-delay relay of synchronous detection logic circuit (21) of hook and the normally opened contact of auxiliary hook gear relay
It being connected in series, the detection synchronous with auxiliary hook of auxiliary hook gear relay normally open contact is connected in series close to switch normally-closed contact, meanwhile, it is secondary
Hook lock-on relay (17) is in parallel with auxiliary hook gear Rotating speed measring time-delay relay, auxiliary hook gear Rotating speed measring time-delay relay
Normally closed delay break contact and auxiliary hook lock-on relay (17) coil are connected in series.
5. the synchronization detecting method under a kind of double lifting mechanism friction speeds using above-mentioned apparatus, it is characterised in that: it is used
Following steps carry out:
When overhead traveling crane is in linkage status, signal is gone up and down by main hook master controller and is issued to main hook gear relay, main hook shelves
Position relay issues corresponding gear signal, and main hook winch drum (9) and auxiliary hook reel (10) start turning, while gear signal (5) is sent out
It is sent to synchronous logic and judges controller (6)；
Main hook winch drum (9), the main hook winch drum rotation detection at auxiliary hook reel (10) are installed on close to switch (3) and auxiliary hook reel turn
Dynamic detection begins through the main hook winch drum rotation detection gear for being installed on main hook winch drum (9) and auxiliary hook reel (10) close to switch (4)
The action situation of iron (1) and auxiliary hook spool turns detection buting iron (2) detection main hook winch drum (9), auxiliary hook reel (10), and will test
The normally closed rotating switch amount signal arrived is sent to synchronous logic in real time and judges controller (6)；
Synchronous logic judges controller (6) according to gear signal (5) the starting main hook gear Rotating speed measring time-delay relay received
(15), auxiliary hook gear Rotating speed measring time-delay relay turns acquisition main hook winch drum rotation detection close to switch (3) and auxiliary hook reel
The normally closed switch amount signal interval and main hook gear Rotating speed measring time-delay relay (15), pair of the dynamic close switch (4) of detection
The setting delay time of hook position Rotating speed measring time-delay relay is compared, once being greater than setting time interval, illustrates main hook
Reel (9), auxiliary hook reel (10) rotation are abnormal, issue main hook, the asynchronous signal of auxiliary hook to main hook speed regulation device (7) and auxiliary hook
Speed regulation device (8) makes main hook winch drum (9), auxiliary hook reel (10) while stopping operating immediately；
Synchronous logic judges that the asynchronous relay of major-minor hook (20) of controller exports two normally opened contacts and arrives main hook speed regulation respectively
Device (7), auxiliary hook speed regulation device (8) control loop power supply common wire on, once monitoring that major-minor hook is asynchronous, major-minor hook is not
The normally opened contact of lock-on relay (20) output disconnects, and cutting main hook speed regulation device (7), the control of auxiliary hook speed regulation device (8) are returned
Road power supply common wire power supply, to control major-minor hook stopping movement.
6. the synchronization detecting method under double lifting mechanism friction speeds according to claim 5, it is characterised in that: main hook shelves
Position Rotating speed measring time-delay relay (15), auxiliary hook gear Rotating speed measring time-delay relay setting delay time be according to standard file
The position revolving speed time calculation formula calculated standard gear time, respectively to each gear Rotating speed measring time-delay relay of major and minor hook
Carry out delay time setting；
Standard gear revolving speed time calculation formula:
Vi=(60/(Ne/I*Vdi)*β
Wherein:
Vi is standard file bit rate time (unit: second)
Ne is Rated motor revolving speed (unit: rev/min)
I is transmission ratio
Vdi is gear speed (percentage)
β is smoothing factor.
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| GB297562A (en) * | 1927-09-02 | 1928-09-27 | John Fothergill | Improvements in and relating to electric lifts |
| US4216868A (en) * | 1978-08-04 | 1980-08-12 | Eaton Corporation | Optical digital sensor for crane operating aid |
| JPH11322279A (en) * | 1998-05-12 | 1999-11-24 | Mitsubishi Electric Corp | Variable speed hoisting device |
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| CN110143521B (en) | 2024-04-05 |
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