CN202379609U - Grabbing crane and control circuit thereof - Google Patents
Grabbing crane and control circuit thereof Download PDFInfo
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- CN202379609U CN202379609U CN 201120454485 CN201120454485U CN202379609U CN 202379609 U CN202379609 U CN 202379609U CN 201120454485 CN201120454485 CN 201120454485 CN 201120454485 U CN201120454485 U CN 201120454485U CN 202379609 U CN202379609 U CN 202379609U
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Abstract
The utility model relates to a grabbing crane and a control circuit of the grabbing crane. The grabbing crane comprises a lifting motor (M10) composed of a hoisting contactor (K10), a lowering contactor (K20), and a lifting brake (Y10) that correspond to the lifting motor; and an opening and closing motor (M20) composed of a grab opening contactor (K21), a grab closing contactor (K11) and an opening and closing brake (Y20) that correspond to the opening and closing motor. As a control circuit with less switching devices than the original control circuit is used, the synchronous control of the lifting of the grab and the start and stop of the opening and closing motor is realized through linkage of the motor, so that the working intensity and working difficulties of operators are lowered and error probability is lowered.
Description
Technical field
The utility model relates to a kind of grab bucket bridge (door) formula hoisting crane, and controls the up-down of grab bucket, the control circuit of switching motor.
Background technology
The lifting motor of grab bucket all adopts serial-resistance speed-regulation control with the switching motor, and two control system are independently, not contact between them.Two master controllers need be set respectively, and when going up and down with opening and closing operations, operating personal need rely on range estimation and experience, and two master controllers of repeatable operation just can make grab bucket accomplish corresponding operating.
In this case, labor intensity of operating personnel is very big; And can not accurately judge the closed degree of grabbing bucket, up-down situation; The experience that must rely on operating personal opportunity to the switch master controller; The difficulty of operation is high, accuracy is low, conformability is very poor; If misoperation is failed to make two motor synchronous to cause opening and closing motor and born all loads, also burn out motor easily; Moreover, because repeatable operation two master controllers, cause the Fraquent start of two motors, motor is caused adverse effect service life.
The utility model content
The purpose of the utility model provides a kind of synchronization control circuit that can realize the up-down of grabbing bucket and open and close motor synchronous starting, acceleration, and in order to solve operation easier, labour intensity height, accuracy is low, the problem that error rate is high.In addition, this novelly also provides a kind of grab bucket (bridge-type, gate-type) hoisting crane that adopts this control circuit.
For realizing the utility model purpose; This later-model hoisting crane scheme is: a kind of grab crane; The contactless for hoisting (K10), decline contactless switch (K20), the up-down drg (Y10) that comprise lifting motor (M10), switching motor (M20) and corresponding lifting motor; Corresponding open and close driving bucket contactless switch (K21), close bucket contactless switch (K11), opening and closing drg (Y20) of motor; The control circuit of grab crane comprises: one group of direction switch (1) comprises rising switch and decline switch; Synchronization control circuit (2) comprises the control branch road that rises, closes bucket control branch road, decline control branch road and opens bucket control branch road, is provided with the set switch (3) that comprises a normally closed switch and a normal open switch in the circuit; First relay K, 040, the second relay K 050; The coil of the normal open switch and first relay K 040 is connected between the live wire X21 and zero line X12 of control circuit, the coils from parallel connection of coils of first, second relay; The rising switch and the control branch road that rises are connected between live wire (X21) and the zero line (X12); The rising switch connects live wire (X21); The control branch road that rises is a series arm, comprises coil, the normally closed switch of series connected successively contactless for hoisting (K10), the normally closed interlock of first relay (K040); It is parallelly connected with the control branch road that rises to close bucket control branch road; Closing bucket control branch road and comprising the coil that closes bucket contactless switch (K11) and the normally open contact of second relay (K050) successively, its series connection point is connected the series connection point of the normally closed interlock of normally closed switch and first relay (K040) in the control branch road that rises; The decline switch connects live wire (X21); The control branch road that descends comprises the coil of decline contactless switch K20; This coil one end connects the decline switch, and the other end is connected the coil of contactless for hoisting K10 in the control branch road that rises and the series connection point of normally closed switch, closes bucket control branch road and comprises the coil that closes bucket contactless switch (K21); The one of which end connects the decline switch, and the other end is connected the series connection point of the normally closed interlock of normally closed switch and first relay (K040) in the control branch road that rises.
The main contact of contactless for hoisting, decline contactless switch is interlocking, open the bucket contactless switch, close the bucket contactless switch main contact also be interlocking.
Be in series with auxiliary first auxiliary contact (K20 ') of decline contactless switch in the described rising control branch road; Auxiliary first auxiliary contact that is in series with contactless for hoisting in the control branch road (K10 ') descends; Opening and being in series with auxiliary first auxiliary contact that closes the bucket contactless switch (K11 ') in the bucket control branch road, closing auxiliary first auxiliary contact that is in series with out the bucket contactless switch in the bucket control branch road (K21 ').
Control circuit also comprises brake control circuit (4): comprise up-down drg contactless switch (K70); Open and close drg contactless switch (K71); Second contact (K10 ' ') of the contactless for hoisting of parallel connection, second contact of decline contactless switch (K20 ' '), close the branch road that second contact (K11 ' ') of bucket contactless switch forms; Connect with the coil of up-down drg (K70), be connected on the power supply; Close the bucket contactless switch the 3rd contact (K11 ' ' '), open second contact (K21 ' ') branch road that parallel connection forms of bucket contactless switch, connect with the coil that opens and closes drg contactless switch (K71), be connected on the power supply; The main contact of said up-down, switching drg is gone here and there respectively and is located in the feed circuit of corresponding drg.
Said control circuit comprises that also series resistance progressively excises control circuit (5), and this series resistance is progressively excised control circuit and is controlled by up-down, opens and closes braking contactor; The auxiliary contact of two contactless switchs (K70 ', K71 ') parallel connection back and first accelerating relay (K041) coil are connected between live wire and the zero line.
The control circuit scheme of the utility model is: a kind of control circuit of grab crane comprises: one group of direction switch (1) comprises rising switch and decline switch; Synchronization control circuit (2) comprises the control branch road that rises, closes bucket control branch road, decline control branch road and opens bucket control branch road, is provided with the set switch (3) that comprises a normally closed switch and a normal open switch in the circuit; First relay (K040), second relay (K050); The coil of normal open switch and first relay (K040) is connected between the live wire (X21) and zero line (X12) of control circuit, the coils from parallel connection of coils of first, second relay; The rising switch and the control branch road that rises are connected between live wire (X21) and the zero line (X12); The rising switch connects live wire (X21); The control branch road that rises is a series arm, comprises coil, the normally closed switch of series connected successively contactless for hoisting (K10), the normally closed interlock of first relay (K040); It is parallelly connected with the control branch road that rises to close bucket control branch road; Closing bucket control branch road and comprising the coil that closes bucket contactless switch (K11) and the normally open contact of second relay (K050) successively, its series connection point is connected the series connection point of the normally closed interlock of normally closed switch and first relay (K040) in the control branch road that rises; The decline switch connects live wire (X21); The control branch road that descends comprises the coil of decline contactless switch K20; This coil one end connects the decline switch, and the other end is connected the coil of contactless for hoisting K10 in the control branch road that rises and the series connection point of normally closed switch, closes bucket control branch road and comprises the coil that closes bucket contactless switch (K21); The one of which end connects the decline switch, and the other end is connected the series connection point of the normally closed interlock of normally closed switch and first relay (K040) in the control branch road that rises.
The main contact of contactless for hoisting, decline contactless switch is interlocking, open the bucket contactless switch, close the bucket contactless switch main contact also be interlocking.
Be in series with auxiliary first auxiliary contact (K20 ') of decline contactless switch in the described rising control branch road; Auxiliary first auxiliary contact that is in series with contactless for hoisting in the control branch road (K10 ') descends; Opening and being in series with auxiliary first auxiliary contact that closes the bucket contactless switch (K11 ') in the bucket control branch road, closing auxiliary first auxiliary contact that is in series with out the bucket contactless switch in the bucket control branch road (K21 ').
Control circuit also comprises brake control circuit (4): comprise up-down drg contactless switch (K70); Open and close drg contactless switch (K71); Second contact (K10 ' ') of the contactless for hoisting of parallel connection, second contact of decline contactless switch (K20 ' '), close the branch road that second contact (K11 ' ') of bucket contactless switch forms; Connect with the coil of up-down drg (K70), be connected on the power supply; Close the bucket contactless switch the 3rd contact (K11 ' ' '), open second contact (K21 ' ') branch road that parallel connection forms of bucket contactless switch, connect with the coil that opens and closes drg contactless switch (K71), be connected on the power supply; The main contact of said up-down, switching drg is respectively applied for string and is located in the feed circuit of corresponding drg.
Said control circuit comprises that also series resistance progressively excises control circuit (5), and this series resistance is progressively excised control circuit and is controlled by up-down, opens and closes braking contactor; The auxiliary contact of two contactless switchs (K70 ', K71 ') parallel connection back and first accelerating relay (K041) coil are connected between live wire and the zero line.
Owing to used the interlock that can make motor than original binistor control circuit still less, realize the up-down and the start-stop synchro control that opens and closes motor of grab bucket, reduced labor intensity of operating personnel and difficulty, reduced the probability of makeing mistakes.
Description of drawings
Fig. 1 is the control circuit figure of the embodiment 1 of control circuit;
Fig. 2 hoists and opens and closes the main circuit diagram of motor;
Fig. 3 is the scheme drawing of the embodiment 2 of control circuit.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is done further detailed explanation.
Like Fig. 1, grab crane shown in Figure 2; Power circuit comprises lifting motor M10 (6), opens and closes contactless for hoisting K10, decline contactless switch K20, the up-down drg Y10 of motor M 20 (7) and corresponding lifting motor among Fig. 2, correspondingly opens and closes opening bucket contactless switch K21, close bucket contactless switch K11, opening and closing drg Y20 of motor.The cooresponding accelerating resistor of 8 expression two motors can be by progressively excision.
F30 is the power import disconnecting link among Fig. 1, and X21 representes live wire, and X12 representes zero line; Each closed node F21, F22, F23; F24 can make the coil losing electricity with they series connected protective relay K00 for the safety control node of protection usefulness, arbitrary place causes open circuit unusually; Contact is opened, and breaks off the power circuit of back.
Control circuit also comprises:
One group of direction switch 1 adopts three driving switch S40, three gears is arranged: " liter "; " 0 ", " liter " corresponding rising switch (going up several second) " fall "; " fall " corresponding decline switch (going up several the 3rd), three gear common switch (upward counting first) are under three kinds of states; This switch is in closure state always, guarantees that protective relay K00 contact is in closure state.
First relay adopts time relay K040, and second relay adopts intermediate relay K050.The coil of normal open switch and time relay K040 is connected between live wire X21 and the zero line X12, the coils from parallel connection of coils of time, intermediate relay.
The rising switch and the control branch road that rises are connected between live wire X21 and the zero line X12; The rising switch connects live wire X21; The control branch road that rises is a series arm, comprises coil, the normally closed switch of series connected successively contactless for hoisting K10, the normally closed interlock of time relay K040; It is parallelly connected with the control branch road that rises to close bucket control branch road; Closing bucket control branch road correspondence and comprising the coil that closes bucket contactless switch K11 and the normally open contact of intermediate relay K050 successively, its series connection point is connected the series connection point of the normally closed interlock of normally closed switch and time relay K040 in the control branch road that rises;
The decline switch connects live wire X21; The control branch road that descends comprises the coil of decline contactless switch K20; This coil one end connects the decline switch, and the other end is connected the coil of contactless for hoisting K10 in the control branch road that rises and the series connection point of normally closed switch, closes bucket control branch road and comprises the coil that closes bucket contactless switch K21; The one of which end connects the decline switch, and the other end is connected the series connection point of the normally closed interlock of normally closed switch and time relay K040 in the control branch road that rises.
The main contact of contactless for hoisting, decline contactless switch is interlocking, open the bucket contactless switch, close the bucket contactless switch main contact also be interlocking.Interlock mode is: the auxiliary first auxiliary contact K20 ' that is in series with the decline contactless switch in the control branch road that rises; Descend and control the auxiliary first auxiliary contact K10 ' that is in series with contactless for hoisting in the branch road; Open and be in series with the auxiliary first auxiliary contact K11 ' that closes the bucket contactless switch in the bucket control branch road, close the auxiliary first auxiliary contact K21 ' that is in series with out the bucket contactless switch in the bucket control branch road.
Control circuit also comprises brake control circuit 4: comprise up-down drg contactless switch K70; Open and close drg contactless switch K71; The second contact K20 ' ' of the second contact K10 ' ', the decline contactless switch of the contactless for hoisting of parallel connection, close the branch road that the second contact K11 ' ' of bucket contactless switch forms; Connect with the coil of up-down drg K70, be connected on the power supply; Close the bucket contactless switch the 3rd contact K11 ' ' ', open the branch road that the second contact the K21 ' ' parallel connection of bucket contactless switch forms, connect with the coil that opens and closes drg contactless switch K71, be connected on the power supply; The main contact of up-down, switching drg is gone here and there respectively and is located in the feed circuit of corresponding drg, as shown in Figure 2.
Control circuit comprises that also series resistance progressively excises control circuit 5, and this series resistance is progressively excised control circuit and is controlled by up-down, opens and closes braking contactor; The auxiliary contact K70 ' of two contactless switchs, K71 ' the parallel connection back and the first accelerating relay K041 coil are connected between live wire and the zero line.Because K70 ', any closure of K71 ', it is electric all K041 to be got, and closed then its contact and that next relay coil is got is electric progressively excises accelerating resistor 8 rapidly.
Below in conjunction with mode of operation narration circuit working principle, in the operation, have five kinds of states:
1, when grab bucket is in out bucket-shaped attitude, when preparing to grab goods, S40 is placed " liter " position, step on foot-operated switch S11 simultaneously.This moment, the coil of intermediate relay K050 and time relay K040 got electricly, and the time relay contact is opened, the intermediate relay contact closure.Make and close bucket contactless switch K11 coil and get electricly, the main contact adhesive opens and closes motor M 20 work, closed grab bucket.And contactless for hoisting K10 coil does not have electricity, and main contact breaks off, and lifting motor M10 does not work.Grab full goods in order to make; String has the second auxiliary normally open contact K11 ' ' that closes bucket contactless switch K11 in the wire loop of up-down drg contactless switch K70, so, after the K11 ' ' adhesive; Also adhesive of up-down drg contactless switch K70; Though make the lifting motor M10 must not electricity like this, its drg Y10 opens, and automatically sinks to grabbing full goods with the increase of weight with regard to making grab bucket.
2, grab full goods after, operating personal unclamps foot-operated switch 3.The coil of intermediate relay K050 and time relay K040 is dead electricity simultaneously; Time relay K040 contact is closed through 1S time-delay back; The main contact adhesive simultaneously that makes contactless for hoisting K10 and close bucket contactless switch K11, lifting motor M10 gets the electrician with switching motor M 20 and does.Drg K70, K71 coil simultaneously in the brake control circuit 4 gets electric, the adhesive of drg main contact, and Y10, Y20 open, and series resistance is progressively excised control circuit 5 and is started working, and progressively excises accelerating resistor 8, and motor M 10, M20 start simultaneously, acceleration work.
3, when grab bucket rises to suitable height, open and struggle against when putting thing, S40 places " 0 " position, places the position of " falling " again.It is electric that decline contactless switch K20 and the coil of opening bucket contactless switch K21 get, and two motors reverse simultaneously, and grab bucket descends.
4, when dropping to correct position, operating personal is stepped on foot-operated switch S11, the coil losing electricity of decline contactless switch K20, and in the brake control circuit 4, up-down drg K70 coil is dead electricity also, so lifting motor M10 stall and drg Y10 band-type brake, grab bucket is parked in aerial; Motor M 20 continues counter-rotating, and grab bucket is opened to struggle against and put thing.
5, put thing after, S40 places " 0 " position, grab bucket keeps original switching degree, is parked in the air, prepares for grabbing thing next time.
Obviously, in embodiment 1, some structures can be made of other devices and substitute, as with the S40 in two switch alternate figures 1 among Fig. 3.Brake control circuit 4 also can according to circumstances omit.The core of synchro control is circuit 2 and direction switch.
About the embodiment of control circuit,, repeat no more at this owing to be completely contained among the hoisting crane embodiment.
Claims (10)
1. grab crane; The contactless for hoisting (K10), decline contactless switch (K20), the up-down drg (Y10) that comprise lifting motor (M10), switching motor (M20) and corresponding lifting motor; Corresponding open and close driving bucket contactless switch (K21), close bucket contactless switch (K11), opening and closing drg (Y20) of motor; It is characterized in that the control circuit of grab crane comprises:
One group of direction switch (1) comprises rising switch and decline switch;
Synchronization control circuit (2) comprises the control branch road that rises, closes bucket control branch road, decline control branch road and opens bucket control branch road, is provided with the set switch (3) that comprises a normally closed switch and a normal open switch in the circuit;
First relay K, 040, the second relay K 050;
The coil of the normal open switch and first relay K 040 is connected between the live wire X21 and zero line X12 of control circuit, the coils from parallel connection of coils of first, second relay;
The rising switch and the control branch road that rises are connected between live wire (X21) and the zero line (X12); The rising switch connects live wire (X21); The control branch road that rises is a series arm, comprises coil, the normally closed switch of series connected successively contactless for hoisting (K10), the normally closed interlock of first relay (K040); It is parallelly connected with the control branch road that rises to close bucket control branch road; Closing bucket control branch road and comprising the coil that closes bucket contactless switch (K11) and the normally open contact of second relay (K050) successively, its series connection point is connected the series connection point of the normally closed interlock of normally closed switch and first relay (K040) in the control branch road that rises;
The decline switch connects live wire (X21); The control branch road that descends comprises the coil of decline contactless switch K20; This coil one end connects the decline switch, and the other end is connected the coil of contactless for hoisting K10 in the control branch road that rises and the series connection point of normally closed switch, closes bucket control branch road and comprises the coil that closes bucket contactless switch (K21); The one of which end connects the decline switch, and the other end is connected the series connection point of the normally closed interlock of normally closed switch and first relay (K040) in the control branch road that rises.
2. a kind of grab crane according to claim 1 is characterized in that, the main contact of contactless for hoisting, decline contactless switch is interlocking, open the bucket contactless switch, close the bucket contactless switch main contact also be interlocking.
3. a kind of grab crane according to claim 2; It is characterized in that; Be in series with auxiliary first auxiliary contact (K20 ') of decline contactless switch in the described rising control branch road; Auxiliary first auxiliary contact that is in series with contactless for hoisting in the control branch road (K10 ') that descends being opened and being in series with auxiliary first auxiliary contact that closes the bucket contactless switch (K11 ') in the bucket control branch road, closing auxiliary first auxiliary contact that is in series with out the bucket contactless switch in the bucket control branch road (K21 ').
4. a kind of grab crane according to claim 1; It is characterized in that; Control circuit also comprises brake control circuit (4): comprise up-down drg contactless switch (K70), open and close drg contactless switch (K71), second contact of second contact of the contactless for hoisting of parallel connection (K10 ' '), decline contactless switch (K20 ' '), close the branch road that second contact (K11 ' ') of bucket contactless switch forms; Connect with the coil of up-down drg (K70), be connected on the power supply; Close the bucket contactless switch the 3rd contact (K11 ' ' '), open second contact (K21 ' ') branch road that parallel connection forms of bucket contactless switch, connect with the coil that opens and closes drg contactless switch (K71), be connected on the power supply; The main contact of said up-down, switching drg is gone here and there respectively and is located in the feed circuit of corresponding drg.
5. a kind of grab crane according to claim 1 is characterized in that, said control circuit comprises that also series resistance progressively excises control circuit (5), and this series resistance is progressively excised control circuit and is controlled by up-down, opens and closes braking contactor; The auxiliary contact of two contactless switchs (K70 ', K71 ') parallel connection back and first accelerating relay (K041) coil are connected between live wire and the zero line.
6. the control circuit of a grab crane is characterized in that, comprising:
One group of direction switch (1) comprises rising switch and decline switch;
Synchronization control circuit (2) comprises the control branch road that rises, closes bucket control branch road, decline control branch road and opens bucket control branch road, is provided with the set switch (3) that comprises a normally closed switch and a normal open switch in the circuit;
First relay (K040), second relay (K050);
The coil of normal open switch and first relay (K040) is connected between the live wire (X21) and zero line (X12) of control circuit, the coils from parallel connection of coils of first, second relay;
The rising switch and the control branch road that rises are connected between live wire (X21) and the zero line (X12); The rising switch connects live wire (X21); The control branch road that rises is a series arm, comprises coil, the normally closed switch of series connected successively contactless for hoisting (K10), the normally closed interlock of first relay (K040); It is parallelly connected with the control branch road that rises to close bucket control branch road; Closing bucket control branch road and comprising the coil that closes bucket contactless switch (K11) and the normally open contact of second relay (K050) successively, its series connection point is connected the series connection point of the normally closed interlock of normally closed switch and first relay (K040) in the control branch road that rises;
The decline switch connects live wire (X21); The control branch road that descends comprises the coil of decline contactless switch K20; This coil one end connects the decline switch, and the other end is connected the coil of contactless for hoisting K10 in the control branch road that rises and the series connection point of normally closed switch, closes bucket control branch road and comprises the coil that closes bucket contactless switch (K21); The one of which end connects the decline switch, and the other end is connected the series connection point of the normally closed interlock of normally closed switch and first relay (K040) in the control branch road that rises.
7. the control circuit of a kind of grab crane according to claim 6 is characterized in that, the main contact of contactless for hoisting, decline contactless switch is interlocking, open the bucket contactless switch, close the bucket contactless switch main contact also be interlocking.
8. the control circuit of a kind of grab crane according to claim 7; It is characterized in that; Be in series with auxiliary first auxiliary contact (K20 ') of decline contactless switch in the described rising control branch road; Auxiliary first auxiliary contact that is in series with contactless for hoisting in the control branch road (K10 ') that descends being opened and being in series with auxiliary first auxiliary contact that closes the bucket contactless switch (K11 ') in the bucket control branch road, closing auxiliary first auxiliary contact that is in series with out the bucket contactless switch in the bucket control branch road (K21 ').
9. the control circuit of a kind of grab crane according to claim 6; It is characterized in that; Control circuit also comprises brake control circuit (4): comprise up-down drg contactless switch (K70), open and close drg contactless switch (K71), second contact of second contact of the contactless for hoisting of parallel connection (K10 ' '), decline contactless switch (K20 ' '), close the branch road that second contact (K11 ' ') of bucket contactless switch forms; Connect with the coil of up-down drg (K70), be connected on the power supply; Close the bucket contactless switch the 3rd contact (K11 ' ' '), open second contact (K21 ' ') branch road that parallel connection forms of bucket contactless switch, connect with the coil that opens and closes drg contactless switch (K71), be connected on the power supply; The main contact of said up-down, switching drg is respectively applied for string and is located in the feed circuit of corresponding drg.
10. the control circuit of a kind of grab crane according to claim 6; It is characterized in that; Said control circuit comprises that also series resistance progressively excises control circuit (5), and this series resistance is progressively excised control circuit and is controlled by up-down, opens and closes braking contactor; The auxiliary contact of two contactless switchs (K70 ', K71 ') parallel connection back and first accelerating relay (K041) coil are connected between live wire and the zero line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120454485 CN202379609U (en) | 2011-09-17 | 2011-11-16 | Grabbing crane and control circuit thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120348457 | 2011-09-17 | ||
| CN201120348457.3 | 2011-09-17 | ||
| CN 201120454485 CN202379609U (en) | 2011-09-17 | 2011-11-16 | Grabbing crane and control circuit thereof |
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| CN202379609U true CN202379609U (en) | 2012-08-15 |
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| CN 201120454485 Withdrawn - After Issue CN202379609U (en) | 2011-09-17 | 2011-11-16 | Grabbing crane and control circuit thereof |
| CN201110363445.2A Active CN102424328B (en) | 2011-09-17 | 2011-11-16 | Grab crane and control circuit thereof |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110363445.2A Active CN102424328B (en) | 2011-09-17 | 2011-11-16 | Grab crane and control circuit thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424328A (en) * | 2011-09-17 | 2012-04-25 | 河南卫华重型机械股份有限公司 | Grab crane and control circuit thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106495003B (en) * | 2016-12-15 | 2018-05-04 | 中车山东机车车辆有限公司 | A kind of joint control control system and method hung for the automatically controlled cantilever lifting of hanger rail flatcar |
| CN108394835A (en) * | 2018-05-08 | 2018-08-14 | 苏州艾沃意特机械设备制造有限公司 | Elevating control circuit unit and double-column lifter land vertically auxiliary circuit |
| CN108466933B (en) * | 2018-05-28 | 2024-04-16 | 山东鲁磁工业科技有限公司 | Lifting device control system utilizing electromagnetic chuck, control method and application |
| CN112242800B (en) * | 2020-11-20 | 2022-05-17 | 中船华南船舶机械有限公司 | Multi-motor electric control system |
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| GB1215711A (en) * | 1967-01-04 | 1970-12-16 | Mte Contactor Systems Ltd Form | Improvements relating to control systems for grab hoists |
| CN1074885A (en) * | 1992-01-31 | 1993-08-04 | 大连起重机器厂 | The control system of four rope grab monolever operation band differential switch |
| CN2203694Y (en) * | 1994-11-18 | 1995-07-19 | 金国钜 | Four-wire grabbing single handle operating controlling apparatus |
| CN2440793Y (en) * | 2000-09-01 | 2001-08-01 | 广东省韶关钢铁集团有限公司 | Automatic controller for four-rope grab buckets |
| JP2002128466A (en) * | 2000-10-23 | 2002-05-09 | Yaskawa Electric Corp | Control method for grab bucket crane |
| CN201240779Y (en) * | 2008-06-26 | 2009-05-20 | 卫华集团有限公司 | Control circuit for preventing crane zero cross hook-gliding |
| CN101559904A (en) * | 2009-04-28 | 2009-10-21 | 深圳市库马克新技术股份有限公司 | Coordination control system for lifting, falling, opening and closing crane grab bucket and control method thereof |
| CN202379609U (en) * | 2011-09-17 | 2012-08-15 | 河南卫华重型机械股份有限公司 | Grabbing crane and control circuit thereof |
-
2011
- 2011-11-16 CN CN 201120454485 patent/CN202379609U/en not_active Withdrawn - After Issue
- 2011-11-16 CN CN201110363445.2A patent/CN102424328B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102424328A (en) * | 2011-09-17 | 2012-04-25 | 河南卫华重型机械股份有限公司 | Grab crane and control circuit thereof |
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| Publication number | Publication date |
|---|---|
| CN102424328A (en) | 2012-04-25 |
| CN102424328B (en) | 2014-01-08 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120815 Effective date of abandoning: 20140108 |
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| RGAV | Abandon patent right to avoid regrant |