CN102815619A - Outage brake buffering protection system for crane - Google Patents
Outage brake buffering protection system for crane Download PDFInfo
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- CN102815619A CN102815619A CN2012103271398A CN201210327139A CN102815619A CN 102815619 A CN102815619 A CN 102815619A CN 2012103271398 A CN2012103271398 A CN 2012103271398A CN 201210327139 A CN201210327139 A CN 201210327139A CN 102815619 A CN102815619 A CN 102815619A
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Abstract
The invention discloses an outage brake buffering protection system for a crane. The outage brake buffering protection system is characterized by comprising an outage detection unit, a cart travelling state/speed detection unit and a PLC (programmable logic controller) control unit, wherein the outage detection unit is connected with a master power supply of a distribution system of the crane, and is used for outputting an outage signal when the power supply is disconnected; the cart travelling state/speed detection unit is connected with a cart travelling controlling unit of the crane, and is used for detecting a moving state and a speed signal of a cart in travelling; the PLC control unit is respectively connected with the outage detection unit and the cart travelling state/speed detection unit, and is used for judging the outage signal detected by the outage detection unit and the moving state and the speed signal of the cart in travelling detected by the cart travelling state/speed detection unit, thereby generating a brake scheme for further controlling a brake system. The outage brake buffering protection system provided by the invention has the advantages of stabilizing the brake during work and greatly relieving impact and vibration caused by outage, thus guaranteeing the safety of the crane and operation personnel.
Description
Technical field
The present invention relates to a kind of hoisting crane power-off brake buffer protection system.
Background technology
Hoisting crane is externally supplied power when interrupting suddenly, and its brake system can be carried out power-off brake immediately, so that hoisting crane stops immediately.If stopping brake occurs in the hoisting crane traveling process, because its braking action is too rapid, navigating mate can be pulled out away from the driver's seat because prepare before the impunity; For the hoisting crane of load running, rocking significantly of handling part also can take place in power-off brake; Simultaneously,, cause hoisting crane to take place acutely to wave, badly influence the structural safety of hoisting crane because hoisting crane topside inertia is excessive.Still do not have associated safety protection system and product at present, therefore a kind of hoisting crane power-off brake buffer protection system is badly in need of being developed.
Summary of the invention
The present invention is directed to the proposition of above problem, and develop a kind of hoisting crane power-off brake buffer protection system.The technological means that the present invention adopts is following:
A kind of hoisting crane power-off brake buffer protection system is characterized in that comprising:
Be connected on the hoisting crane switching arrangement total output power supply outage detection unit of output ct-off signal when electrical source of power is cut off the power supply;
Connect the crane large vehicle walking control unit, the large vehicle walking state-detection/speed detection unit of state of kinematic motion when being used to detect large vehicle walking and speed signal;
Be connected the electric power supply mouth of brake system, as the emergency electric system of emergent uninterrupted power supply (UPS);
Be connected with large vehicle walking state-detection/speed detection unit with the outage detection unit respectively; Ct-off signal to the detection of outage detection unit; State of kinematic motion and speed signal during the large vehicle walking that detects with large vehicle walking state-detection/speed detection unit carry out producing the PLC control unit that braking scheme is controlled brake system after the judgment processing.
The braking scheme that said PLC control unit is controlled brake system is some braking scheme, the mode of operation of promptly braking simultaneously or unclamping according to all drgs of time control of setting.
The braking scheme that said PLC control unit is controlled brake system is a drg grouping braking scheme; Promptly control the large vehicle walking drg according to time of setting and different numbers of constantly opening drg, increase the mode of operation of the drg number of participating in braking from less to more gradually.
The braking scheme that said PLC control unit is controlled brake system is stopped for point and is divided into groups to brake combination; Promptly the drg of participating in braking is braked simultaneously according to the time of setting and with the mode of operation of unclamping, increase the drg number of participating in braking simultaneously gradually.
Said brake system comprises: large vehicle walking drg, rail clamping device, clip wheel device and cable drum drg.
Also be provided with the PLC control unit between said emergency electric system and the brake system and be connected; Receive the braking scheme that the PLC control unit sends, and the power supply output unit of each drg break-make electricity in the brake system being controlled according to the control policy of braking scheme.
A kind of hoisting crane power-off brake buffer protection method is characterized in that comprising the steps:
1) initialization time meter, i.e. initialization cart crawl connection, shut t1, cable drum drg are opened time t2 and the final braking time t3 of cart;
2) judge that whether t3 is smaller or equal to cart parking period T3; If t3 is during greater than cart parking period T3, rail clamping device and clip wheel device are time-delay closing, promptly after cart stops, closing again; If t3 is during smaller or equal to cart parking period T3, rail clamping device and clip wheel device are opened and are also carried out following steps simultaneously;
3) at t1 < during=large vehicle walking drg turnon time T0; The large vehicle walking drg is opened; As t1>T0 and when opening time T 1 less than the cable drum drg large vehicle walking drg close, when t2 the cable drum drg is opened during=T1, and surpass this time then the cable drum drg close.
This cover system is braked steadily in the course of the work, has reduced the shock and vibration that outage causes greatly, has realized the safety control to hoisting crane and operating personal.In addition,, not only be convenient to produce, and cost is very cheap is suitable for extensive popularization because it is simple in structure.
Description of drawings
Fig. 1 system works functional block diagram;
Fig. 2 is the workflow diagram of this system;
Fig. 3 PLC control principle figure;
Fig. 4 drg interconnecting wiring diagram.
The specific embodiment
The principle of this hoisting crane power-off brake buffer protection system is following: on the feed circuit of hoisting crane, insert the outage detection device, output ct-off signal when electrical source of power is cut off the power supply.Carry out the motor walking simultaneously and detect output movement status signal when large vehicle walking.Electric power supply mouth in brake system increases emergent uninterrupted power supply (UPS), and according to the work of detected ct-off signal and this protection system of large vehicle walking signal enabling, native system was not worked when cart remained static when outage takes place.The power-off protection control system can produce different control of braking strategies, and control hoisting crane braking related system comprises large vehicle walking drg, rail clamping device, clip wheel device and cable drum drg etc.Braking scheme comprises the combination that some braking, drg grouping braking and the point of large vehicle walking drg are stopped and divided into groups to brake, and passes through the brake parameters of the corresponded manner of the suitable brake mode of test acquisition; Adopt power frequency UPS power supply, this power supply has stronger anti-current impact capacity to each drg work.Outage detection point is the total contactless switch of hoisting crane below, detects at this point and both can protect because the unexpected braking that outage causes also can be protected owing to the unexpected braking that causes by the emergency brake operations button is impacted.Control policy is promptly braked simultaneously, is unclamped a plurality of large vehicle walking drgs for putting the mode of stopping, and through repeatedly braking, steadily reduces the speed and the kinetic energy of hoisting crane.This mode need not be judged the direction of large vehicle walking simultaneously, is convenient to system implementation.The cable drum drg is the mode of time opening, guarantees to large vehicle walking leaves enough length, make braking when sliding cable do not dragged disconnectedly, simultaneously cable is come off too much to be wound on hoisting crane relevant apparatus or the track and hung up and break.Rail clamping device and clip wheel device are the time-delay closing mode, after cart stops, closing again.For crane braking system increases the additional supply supply, so that be the electric power buffering that ramp to stop provides brake system when losing external power.In a specified time, avoid the various brake equipments of hoisting crane to work rapidly, strengthen the braking time and the stopping distance of hoisting crane, to eliminate the potential safety hazard of braking the aspects such as hanging piece, equipment and personnel that cause suddenly significantly.
Like Fig. 1, shown in Figure 2; The present invention adopts the mode of " electric power supply monitoring, state of kinematic motion monitoring and brake system electric power buffering combine "; Comprise: be connected on the hoisting crane switching arrangement total output power supply 10 the outage detection unit 22 of output ct-off signal when electrical source of power is cut off the power supply; Connect crane large vehicle walking control unit 11, the large vehicle walking state-detection/speed detection unit 23 of state of kinematic motion when being used to detect large vehicle walking and speed signal; Be connected the electric power supply mouth of brake system, as the emergency electric system 21 of emergent uninterrupted power supply (UPS), said emergency electric system 21 adopts power frequency UPS electric power system; Be connected with large vehicle walking state-detection/speed detection unit 23 with outage detection unit 22 respectively; Ct-off signal to 22 detections of outage detection unit; State of kinematic motion and speed signal during the large vehicle walking that detects with large vehicle walking state-detection/speed detection unit 23 carry out producing the PLC control unit 25 that braking scheme is controlled brake system after the judgment processing.Said brake system comprises: large vehicle walking drg 12, rail clamping device 13, clip wheel device 14 (said rail clamping device 13 constitutes anti-wind system with clip wheel device 14) and cable drum drg 15.
Instantiation is following: on the three phase supply circuit 10 of hoisting crane, insert the outage detection device, when electrical source of power was cut off the power supply, outage detection part 22 can be given the PLC of control system by the output ct-off signal.Carry out large vehicle walking simultaneously and detect 11,23 output movement state/speed signals are given control part PLC when large vehicle walking.Electric power supply mouth in brake system increases emergency electric system 21; Optional emergent uninterrupted power supply (UPS); Work according to detected ct-off signal P and this protection system of large vehicle walking signal R startup; Native system was not worked when cart remained static when outage takes place, prevent static when hanging thing release the brake cause mobilely, influence the hoisting crane nominal situation and causes potential potential safety hazard.Power-off protection control system PLC can produce different control of braking strategies, and control hoisting crane braking, related system such as windproof comprise large vehicle walking drg 12, rail clamping device 13, clip wheel device 14 and cable drum drg 15 etc.Braking scheme comprises the combination that the some braking of large vehicle walking drg, the grouping braking of organizing drg and point are stopped and divided into groups to brake more, and obtains the brake parameters of the corresponded manner of suitable brake mode through test.(main thought of the present invention promptly adopts the buffer-braking strategy to alleviate the enormous impact that original snap catch causes.Therefore the present invention proposes and has tested multiple different brake mode.Wherein, the group system flowing mode, be about to former all large vehicle walking drgs simultaneously brake mode become from less to more, hard and soft both sides leg increases the mode of the drg number of participating in braking simultaneously gradually, is increased to 4,6 so that all drgs from 2 simultaneously like both sides.Because less drg is work earlier, its lock torque is not enough to make immediately the hoisting crane stopping-down, and with this purpose that reaches the braking buffering, the hoisting crane relatively poor for the drg time response can adopt this scheme.Point stop mode for all drgs are braked simultaneously and with the mode of operation of unclamping; As controlling through velocity feedback is the ABS system of similar automobile; In practical application; Can need not velocity feedback, and confirm to brake and unclamp the time according to experiment, this mode can obtain braking effect preferably.Point is stopped and is divided into groups to brake the mode that combines and promptly respectively drg carried out crawl, and increases the drg number gradually, and this mode realizes that more preceding dual mode is complicated, can adopt under the situation for heavy type, many drgs time response difference.For a braking mode, can confirm required drg adhesive and the time parameter that unclamps through experiment, and maximum braking time parameter.Accurately braking can be carried out speed and impact feedback mensuration and control through speed, acceleration pick-up.For less demanding occasion, simply adopt the operator to feel and can confirm, selection operation person feels that the parameter of friction and impact gets final product.Consider the characteristic of crane brake, for like SEW constant velocity drg faster, generally can be taken as braking and the time of unclamping to be respectively hundred Milliseconds that braking time and the time of unclamping is about the same promptly can to obtain better buffer-braking effect.But other mode R point flowing modes obtain relevant parameter to get final product.）
This cover system is braked steadily in the course of the work, has reduced the shock and vibration that outage causes greatly, has realized the safety control to hoisting crane and operating personal.Native system is implemented on the 200t gauntry crane.Adopt power frequency UPS power supply, this power supply has stronger anti-current impact capacity to each drg work.Outage detection point is the total contactless switch of hoisting crane below, detects at this point and both can protect because the unexpected braking that outage causes also can be protected owing to the unexpected braking that causes by the emergency brake operations button is impacted.As shown in Figure 2, concrete performing step is following: 1) initialization time meter, i.e. and initialization cart crawl connection, shut t1, cable drum drg are opened time t2 and the final braking time t3 of cart; (setting T0, T1 and T3:T0 simultaneously is large vehicle walking drg turnon time, and t0 a period of time in one-period T1 connects a period of time and breaks off.T1 opens the time for the cable drum drg, during whole braking, can keep the open mode of certain hour, guarantees not break cable.T3 is a parking period, guarantees that coasting distance is not long.) 2) and judge t3 whether smaller or equal to cart parking period T3 (, guarantee that promptly coasting distance is not long, if the long meeting of braking time causes the cart coasting distance far away excessively, increased plunge off the tracks or with the approaching object collision maybe); If t3 is during greater than cart parking period T3, rail clamping device and clip wheel device are time-delay closing, promptly after cart stops, closing again; If t3 is during smaller or equal to cart parking period T3, rail clamping device and clip wheel device are opened and are also carried out following steps simultaneously; 3) (control policy is for putting the mode of stopping; Promptly a plurality of large vehicle walking drgs are braked simultaneously, unclamped, respectively by T0, the control of T1 parameter, because former drg self time response; At T0, T1 under the prerequisite of not changing drg is hundred Milliseconds) at t1 < during=large vehicle walking drg turnon time T0; Many group large vehicle walking drgs are opened, as t1>T0 and when opening time T 1 less than the cable drum drg large vehicle walking drg close, realize the accuracy control of brake switch.Through repeatedly braking, steadily reduce the speed and the kinetic energy of hoisting crane.This mode need not be judged the direction of large vehicle walking simultaneously, is convenient to system implementation.A plurality of drgs are controlled separately, and the cart both sides braking difference that avoid because contactless switch fault etc. caused causes the hoisting crane deflection.The cable drum drg is the mode of time opening; < the cable drum drg is opened during=T1 as t2; Surpass this time then the cable drum drg close; Guarantee to leave enough length for large vehicle walking, cable was not dragged disconnectedly when braking was slided, and simultaneously cable was come off too much to be wound on hoisting crane relevant apparatus or the track and quilt is hung up and broken.Rail clamping device and clip wheel device are the time-delay closing mode, after cart stops, closing, i.e. t3 again>during T3, T3 is a second level.
Like Fig. 3,4, in circuit layout, adopt the PLC of the transistor way of output, make system have the high frequency fan-out capability.Simultaneously, adopt the mode of the solid-state contactless switch of PLC direct drive at mouth.Because solid-state contactor control end electric current is little, can save common intermediate relay as transition, further improves the speed of response and the control accuracy of system outlet.Power-off brake buffering control PLC controls the break-make of solid-state contactless switch; The three-phase power electricity of power frequency UPS is outputed to the drg of each cart movable motor; According to actual conditions; Just leg is connected a plurality of solid-state contactless switchs respectively with gentle leg, and each solid-state contactor control one is to several drgs (control is two in this example), and the risk that causes when reducing the contactless switch fault has also reduced cost.Owing to only need one to export to large vehicle walking brake coil or the clip wheel of firm leg, gentle leg, the electromagnetic valve of rail clamping device mutually, so the power frequency ups power that can select single-phase 380V for use is with further minimizing cost.The output of power-off protection power supply is directly connected to drg contactless switch lower end in the former large vehicle walking control system, makes its not reverse crosstalk make the UPS overload to main feed circuit, thereby causes thrashing.Therefore UPS only need provide and be enough to support that the power of each drg gets final product, and actv. has reduced the cost of UPS.Owing to directly receive contactless switch, easy-to-connect need not each element is transformed simultaneously, and installation difficulty and cost are reduced greatly.
This system installs on 200 tons of transfer cranes, 3800 tons of hoisting crane own wts, 65 meters of height; 120 meters of spans; At full throttle during 30 meters/minute running velocity, braking time is 4 seconds under the native system protection, and coasting distance is less than 1 meter; Whole braking procedure is steady, does not have obviously vibration and impact.
The above; Be merely the preferable specific embodiment of the present invention; But protection scope of the present invention is not limited thereto; Any technical personnel of being familiar with the present technique field is equal to replacement or change according to technical scheme of the present invention and inventive concept thereof in the technical scope that the present invention discloses, all should be encompassed within protection scope of the present invention.
Claims (7)
1. hoisting crane power-off brake buffer protection system is characterized in that comprising:
Be connected on the hoisting crane switching arrangement total output power supply (10) the outage detection unit (22) of output ct-off signal when electrical source of power is cut off the power supply;
Connect crane large vehicle walking control unit (11), the large vehicle walking state-detection/speed detection unit (23) of state of kinematic motion when being used to detect large vehicle walking and speed signal;
Be connected the electric power supply mouth of brake system, as the emergency electric system (21) of emergent uninterrupted power supply (UPS);
Be connected with large vehicle walking state-detection/speed detection unit (23) with outage detection unit (22) respectively; Ct-off signal to outage detection unit (22) detection; State of kinematic motion and speed signal during the large vehicle walking that detects with large vehicle walking state-detection/speed detection unit (23) carry out producing the PLC control unit (25) that braking scheme is controlled brake system after the judgment processing.
2. a kind of hoisting crane power-off brake buffer protection according to claim 1 system; It is characterized in that the braking scheme that said PLC control unit (25) is controlled brake system is some braking scheme, the mode of operation of promptly braking simultaneously or unclamping according to all drgs of time control of setting.
3. a kind of hoisting crane power-off brake buffer protection according to claim 1 system; It is characterized in that the braking scheme that said PLC control unit (25) is controlled brake system is a drg grouping braking scheme; Promptly control the large vehicle walking drg according to time of setting and different numbers of constantly opening drg, increase the mode of operation of the drg number of participating in braking from less to more gradually.
4. a kind of hoisting crane power-off brake buffer protection according to claim 1 system; It is characterized in that braking scheme that said PLC control unit (25) is controlled brake system stops for point and divide into groups to brake combination; Promptly the drg of participating in braking is braked simultaneously according to the time of setting and with the mode of operation of unclamping, increase the drg number of participating in braking simultaneously gradually.
5. according to claim 1,2,3 or 4 described a kind of hoisting crane power-off brake buffer protection systems, it is characterized in that said brake system comprises: large vehicle walking drg (12), rail clamping device (13), clip wheel device (14) and cable drum drg (15).
6. according to claim 1,2,3 or 4 described a kind of hoisting crane power-off brake buffer protection systems; It is characterized in that also being provided with PLC control unit (25) between said emergency electric system (21) and the brake system and be connected; Receive the braking scheme that PLC control unit (25) sends, and the power supply output unit of each drg break-make electricity in the brake system being controlled according to the control policy of braking scheme (24).
7. a hoisting crane power-off brake buffer protection method is characterized in that comprising the steps:
1) initialization time meter, i.e. initialization cart crawl connection, shut t1, cable drum drg are opened time t2 and the final braking time t3 of cart;
2) judge that whether t3 is smaller or equal to cart parking period T3; If t3 is during greater than cart parking period T3, rail clamping device and clip wheel device are time-delay closing, promptly after cart stops, closing again; If t3 is during smaller or equal to cart parking period T3, rail clamping device and clip wheel device are opened and are also carried out following steps simultaneously;
3) at t1 < during=large vehicle walking drg turnon time T0; The large vehicle walking drg is opened; As t1>T0 and when opening time T 1 less than the cable drum drg large vehicle walking drg close, when t2 the cable drum drg is opened during=T1, and surpass this time then the cable drum drg close.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201210327139.8A CN102815619B (en) | 2012-09-06 | 2012-09-06 | Outage brake buffering protection system for crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210327139.8A CN102815619B (en) | 2012-09-06 | 2012-09-06 | Outage brake buffering protection system for crane |
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| CN102815619A true CN102815619A (en) | 2012-12-12 |
| CN102815619B CN102815619B (en) | 2014-09-17 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395698A (en) * | 2013-08-23 | 2013-11-20 | 徐工集团工程机械股份有限公司 | Safety control method, device and system for execution actions of crawling crane |
| CN103979420A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Power-off brake buffer device for large-scale gantry crane |
| CN105236232A (en) * | 2015-11-17 | 2016-01-13 | 大连市特种设备检测研究院 | Remote and electric brake-releasing emergency rescue device for building hoists and work method thereof |
| CN112209239A (en) * | 2020-10-29 | 2021-01-12 | 芜湖新兴铸管有限责任公司 | Crane cart walking emergency safety braking device and method |
| CN113104739A (en) * | 2021-04-06 | 2021-07-13 | 青岛科捷机器人有限公司 | Gantry traveling mechanism and traveling control method |
| CN113800400A (en) * | 2020-06-12 | 2021-12-17 | 中冶宝钢技术服务有限公司 | Crane safety avoiding system |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435951A (en) * | 1977-08-26 | 1979-03-16 | Hitachi Ltd | Device of preventing drop of load |
| DE3341414A1 (en) * | 1983-11-15 | 1985-05-30 | Albert Dipl.-Kaufm. 8000 München Blaimer | Device for testing overload safety devices on lifting appliances |
| JPH069189A (en) * | 1992-06-24 | 1994-01-18 | Yamaha Motor Co Ltd | Drop preventive mechanism of conveyer device |
| CN2509162Y (en) * | 2001-08-23 | 2002-09-04 | 中国人民解放军62422部队 | Time-delay controller for braking device |
| CN1654304A (en) * | 2005-02-01 | 2005-08-17 | 太原重型机械集团有限公司 | Lifting mechanism braking system of hoister |
| CN2918357Y (en) * | 2006-04-25 | 2007-07-04 | 西南交通大学 | Braking apparatus of bridge and trestle crane running gear |
| CN201722077U (en) * | 2010-07-21 | 2011-01-26 | 无锡大力起重机械有限公司 | Traveling anti-collision safe control system of snub-type crane |
-
2012
- 2012-09-06 CN CN201210327139.8A patent/CN102815619B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5435951A (en) * | 1977-08-26 | 1979-03-16 | Hitachi Ltd | Device of preventing drop of load |
| DE3341414A1 (en) * | 1983-11-15 | 1985-05-30 | Albert Dipl.-Kaufm. 8000 München Blaimer | Device for testing overload safety devices on lifting appliances |
| JPH069189A (en) * | 1992-06-24 | 1994-01-18 | Yamaha Motor Co Ltd | Drop preventive mechanism of conveyer device |
| CN2509162Y (en) * | 2001-08-23 | 2002-09-04 | 中国人民解放军62422部队 | Time-delay controller for braking device |
| CN1654304A (en) * | 2005-02-01 | 2005-08-17 | 太原重型机械集团有限公司 | Lifting mechanism braking system of hoister |
| CN2918357Y (en) * | 2006-04-25 | 2007-07-04 | 西南交通大学 | Braking apparatus of bridge and trestle crane running gear |
| CN201722077U (en) * | 2010-07-21 | 2011-01-26 | 无锡大力起重机械有限公司 | Traveling anti-collision safe control system of snub-type crane |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103395698A (en) * | 2013-08-23 | 2013-11-20 | 徐工集团工程机械股份有限公司 | Safety control method, device and system for execution actions of crawling crane |
| CN103395698B (en) * | 2013-08-23 | 2015-06-24 | 徐工集团工程机械股份有限公司 | Safety control method, device and system for execution actions of crawling crane |
| CN103979420A (en) * | 2014-04-29 | 2014-08-13 | 南通中远船务自动化有限公司 | Power-off brake buffer device for large-scale gantry crane |
| CN103979420B (en) * | 2014-04-29 | 2015-11-11 | 南通中远船务自动化有限公司 | Large-sized gantry crane dead electricity brake buffer unit |
| CN105236232A (en) * | 2015-11-17 | 2016-01-13 | 大连市特种设备检测研究院 | Remote and electric brake-releasing emergency rescue device for building hoists and work method thereof |
| CN113800400A (en) * | 2020-06-12 | 2021-12-17 | 中冶宝钢技术服务有限公司 | Crane safety avoiding system |
| CN112209239A (en) * | 2020-10-29 | 2021-01-12 | 芜湖新兴铸管有限责任公司 | Crane cart walking emergency safety braking device and method |
| CN113104739A (en) * | 2021-04-06 | 2021-07-13 | 青岛科捷机器人有限公司 | Gantry traveling mechanism and traveling control method |
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| CN102815619B (en) | 2014-09-17 |
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Effective date of registration: 20161027 Address after: 116085, No. 102, Xinxin garden, Ganjingzi District, Liaoning, Dalian, China 1-4-1 Patentee after: Su Tieming Address before: 116021 No. 51 Xishan street, Shahekou District, Liaoning, Dalian 301 Patentee before: Dalian Qitian Automation Control System Co., Ltd. |