CN204150964U - A kind of novel span winch automatic rotating anchoring device - Google Patents
A kind of novel span winch automatic rotating anchoring device Download PDFInfo
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- CN204150964U CN204150964U CN201420541613.1U CN201420541613U CN204150964U CN 204150964 U CN204150964 U CN 204150964U CN 201420541613 U CN201420541613 U CN 201420541613U CN 204150964 U CN204150964 U CN 204150964U
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- grappling
- drive screw
- pin
- turn table
- anchoring device
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Abstract
A kind of novel span winch automatic rotating anchoring device, comprise pedestal and grappling pin plate, described base bottom is connected with bracing frame, and bracing frame right-hand member is fixedly connected with the turn table of hoisting crane, and turn table lower end is provided with the cylinder door frame of hoisting crane.Be provided with vertical drive screw in described pedestal, drive screw is controlled by grappling reducing motor, is provided with grappling reseting sensor above drive screw.Described drive screw lower end is stretched out bracing frame and is connected with revolution anchor pin by drive link, sleeve is provided with outside revolution anchor pin, arrange the grappling pin plate of band pin-and-hole below revolution anchor pin, grappling pin plate and cylinder door frame link into an integrated entity, and are provided with bottom grappling pin plate and anchor to level sensor.On the right side of sleeve, turn table is provided with centering limit sensors, is provided with deceleration limit sensors in turn table, and turn table is provided with the turning motor of coder.This apparatus design degree of automation is high, easy and simple to handle, safe and reliable, greatly enhances productivity.
Description
Technical field
The utility model relates to a kind of anchoring device, is specifically related to a kind of novel span winch automatic rotating anchoring device, and can realize auto-manual revolution grappling.
Background technology
Span winch can be divided into two large divisions: fixed part and rotating part, in a non-operative state, should by the rotating part grappling of span winch, under preventing typhoon effect, rotating part distribution is conigenous by rotating, and causes safety misadventure.Therefore, turning round anchoring device is the requisite safety guard of hoisting crane.Generally driver one people has been difficult to revolution grappling alignment operation, also need a people to stand on round platform and observe revolution grappling present position and the timely operating personal adjustment revolution anchor station notified in driver's cab, after revolution anchor pin and the contraposition of grappling otic placode, then enter machine house anchor pin is inserted in grappling lug plate holes.The requirement of this operating mode to driver and auxilian is higher, and contraposition difficulty, efficiency is lower.
Along with the development of Modern Port machinery, the Automated condtrol trend of port machine is more and more obvious; Wherein, normal Job Operations can reach semiautomatic control state, but as high pedestal jib crane secure context most important link revolution grappling, all adopt manual operations at present, two personnel's coordinated manipulations are needed to complete, inefficiency, more has certain danger as observer.Therefore, in the urgent need to a set of maturation, easy, turn round anchoring device efficiently.Can solve that high pedestal jib crane starts, the problem of complicated operation when shutting down by actv., reduce greatly the work capacity of driver, high efficiency, improve the safety of operating personal.
The gantry crane rotation anchoring device patent of invention that the people such as Li Zhong declare, publication number is that CN101934986A proposes one one kinds of solutions: be welded on by anchor frame bottom turntable, cylinder near grappling otic placode arranges separate control box, swing type mechanism is controlled, the contraposition of range estimation swing type mechanism with this.This mode achieves a people just can grappling rotating part, but due to directly over the round platform of anchor frame outside cylindrical shell, takes up room large, impact circle plate tunnel, the potential safety hazard such as cause that anchor frame is thrusted into during door machine revolution simultaneously.
The high pedestal jib crane auto-manual rotary anchoring device utility model patent that the people such as Zhu Congbing declare, publication number is CN203006779U, rotating mechanism control dial and rotation grappling control dial are placed in a control box by this utility model, change traditional M/C into motorized motions, and control box is placed on the bottom of rotating mechanism, operator only need operate on circle platform, rotation anchoring work can be completed, simple to operate, and during contraposition or limit controls revolution limit range estimation alignment situation, contraposition accuracy depends on the level of operator.
Above patent of invention is Semi-automatic control system, do not realize full automatic control revolution anchoring device, although certain work capacity can be reduced, need the operant level improving operating personal on the one hand, also there is certain potential safety hazard during operating personal operation on the one hand.
Utility model content
The purpose of this utility model is the automatic rotating anchoring device being to propose a kind of novel span winch; this anchoring device can realize high pedestal jib crane revolution grappling contraposition fast and automatically; start grappling button and can realize automatic rotary grappling; turn round the work capacity that contraposition grappling produces when can reduce shutdown, improve the safety of operating personal.
To achieve these goals, the technical solution of employing is the utility model:
A kind of novel span winch automatic rotating anchoring device, comprise pedestal and grappling pin plate, described base bottom is fixedly connected with bracing frame, support frame as described above right-hand member is fixedly connected with the turn table of hoisting crane, turn table lower end is provided with the cylinder door frame of hoisting crane, described pedestal is cavity structure, vertical drive screw is provided with in pedestal, described drive screw top is configured with transmission big gear wheel, described transmission big gear wheel engages with the drive pinion of its side, and drive pinion lower end is connected with grappling reducing motor.Drive link is connected with after bracing frame is stretched out in described drive screw lower end, described drive link lower end is hinged with vertical revolution anchor pin, revolution anchor pin is configured with sleeve, sleeve is connected with turn table by the support of turn table, revolution anchor pin can be moved in sleeve, described lower cartridge is provided with centering limit sensors near the side of turn table, the right side of described centering limit sensors is provided with the grappling centering baffle plate be fixed on grappling pin plate, and leaves gap between centering limit sensors and grappling centering baffle plate.Described grappling pin plate is arranged on the below of sleeve and is connected to turn table, and described grappling pin plate has the grappling pin-and-hole suitable with turning round anchor pin, the bottom of grappling pin plate is provided with spacing transiting rod.
Preferably, described drive screw top is threaded and lower surface is smooth, drive screw top cover has the transmission inner nut be arranged in transmission big gear wheel, and transmission inner nut and transmission big gear wheel are connected by screw integral, and transmission inner nut adopts high-abrasive material ZCuAl
10fe
3, transmission inner nut and drive screw adopt the thick thread screw thread of medium accuracy, and when transmission inner nut rotates, drive screw vertically moves.
Preferably, in described pedestal, the smooth part of drive screw is fixed with the postive stop baffle identical with drive screw lower end, described postive stop baffle, for limiting the up-and-down movement stroke of drive screw, is provided with otic placode bottom the postive stop baffle of screw rod lower end, described otic placode by bearing pin and drive link hinged.
Preferably, the gear teeth on described transmission big gear wheel top are positioned at above pedestal, the smooth part of transmission big gear wheel bottom to be arranged in pedestal and with the shaft shoulder, the bilateral symmetry of shaft shoulder lower end is provided with two self-aligning thrust roller bearings be arranged above and below, described two self-aligning thrust roller bearings are separated by axle sleeve, and the annular backup pad be arranged in pedestal holds the self-aligning thrust roller bearing being positioned at below.
Preferably, described transmission big gear wheel top and drive pinion are provided with casing, casing bottom is fixedly connected with the upper end of pedestal, casing has the circular hole corresponding with drive screw, the side that casing upper surface is positioned at drive screw is provided with grappling reseting sensor, be connected with handwheel after casing is stretched out in the rotating shaft of drive pinion upper end, can M/C be realized.
Preferably, described drive link comprises two sections and two sections pass through hinge, drive screw axis can be realized and with the axis of revolution anchor pin, the special delivery power that to do as usual when misplacing is installed, the face of joint of revolution anchor pin and sleeve inner is oval, ensures that revolution anchor pin vertically can do translation in sleeve.
Preferably, be articulated with the bottom of grappling pin plate in the middle part of described spacing transiting rod, the right-hand member of spacing transiting rod upwards bends and extend into grappling pin-and-hole, and the left side of spacing transiting rod is provided with and anchors to level sensor.
Preferably, the bottom of described turn table is fixed with deceleration limit sensors erection support, the lower end of deceleration limit mounting bearing is provided with deceleration limit sensors, the cylinder door frame that described deceleration limit sensors is corresponding is provided with deceleration postive stop baffle, described deceleration postive stop baffle is the I-beam section of two pieces of arcuate structures, the radian that two pieces of I-beam sections are bending and deceleration limit sensors rotary track coincide, and leave gap between two pieces of I-beam sections.
Preferably, described centering limit sensors, grappling reseting sensor and anchor to level sensor and be opto-electronic pickup with connecting portion, described deceleration limit sensors is be installed on the opto-electronic pickup on deceleration limit mounting bearing.
Preferably, grappling reducing motor is configured with control panel, described control panel is provided with grappling button and reset button, and described turn table is provided with turning motor, turning motor is configured with the coder for controlling turn table degreeof turn.
By adopting preceding solution, Advantageous Effects of the present utility model is: the automatic rotating anchoring device advanced design of this novel span winch, easy and simple to handle, manual control swing type mechanism is not needed to carry out revolution grappling contraposition, revolution anchor pin does not need manual operation, liberates the productive forces greatly, and revolution grappling only needs driver's push key just can complete, efficiency is high, is the important component part of harbour machinery automation development.
Accompanying drawing explanation
Fig. 1 is a kind of structural representation of automatic rotating anchoring device of novel span winch.
Fig. 2 is the structural representation of turn table rotary decelerating limit sensors mechanism.
Fig. 3 is the birds-eye view of Fig. 2.
Fig. 4 turns round the spacing structural representation of anchor pin centering.
Fig. 5 is turn table degreeof turn instruction diagram.
Fig. 6 is the structural representation of control panel.
Fig. 7 is the section drawing of sleeve.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in detail:
Composition graphs 1 to Fig. 7, a kind of novel span winch automatic rotating anchoring device, comprise pedestal 9 and grappling pin plate 28, bracing frame 22 is fixedly connected with bottom described pedestal 9, support frame as described above 22 right-hand member is fixedly connected with the turn table 24 of hoisting crane, turn table 24 lower end is provided with the cylinder door frame 23 of hoisting crane, described pedestal 9 is cavity structure, vertical drive screw 4 is provided with in pedestal 9, described drive screw 4 top is configured with transmission big gear wheel 5, described transmission big gear wheel 5 engages with the drive pinion 3 of its side, drive pinion 3 lower end is connected with grappling reducing motor 8.Drive link 10 is connected with after bracing frame 22 is stretched out in described drive screw 4 lower end, described drive link 10 lower end is hinged with vertical revolution anchor pin 11, revolution anchor pin 11 is configured with sleeve 12, sleeve 12 is connected with turn table 24 by the support 26 of turn table 24, revolution anchor pin 11 can be moved in sleeve 12, described sleeve 12 bottom is provided with centering limit sensors 13 near the side of turn table 24, the right side of described centering limit sensors 13 is provided with the grappling centering baffle plate 14 be fixed on grappling pin plate 28, and leave gap between centering limit sensors 13 and grappling centering baffle plate 14.Described grappling pin plate 28 is arranged on the below of sleeve 12 and is connected on cylinder door frame 23, described grappling pin plate 28 has the grappling pin-and-hole 21 suitable with turning round anchor pin 12, and the bottom of grappling pin plate 28 is provided with spacing transiting rod 16.
Described drive screw 4 top is threaded and lower surface is smooth, drive screw 4 top cover has the transmission inner nut 6 be arranged in transmission big gear wheel 5, transmission inner nut 6 and transmission big gear wheel 5 are connected by screw integral, and transmission inner nut 6 adopts high-abrasive material ZCuAl
10fe
3, transmission inner nut 6 and drive screw 4 adopt the thick thread screw thread of medium accuracy, and when transmission inner nut 6 rotates, drive screw 4 vertically moves.In described pedestal 9, the smooth part of drive screw 4 is fixed with the postive stop baffle 20 identical with drive screw 4 lower end, described postive stop baffle 20 is for limiting the up-and-down movement stroke of drive screw 4, be provided with otic placode 29 bottom the postive stop baffle 20 of drive screw 4 lower end, otic placode 29 is hinged with drive link 10.The gear teeth on described transmission big gear wheel 5 top are positioned at above pedestal 9, the smooth part of transmission big gear wheel 5 bottom to be arranged in pedestal 9 and with the shaft shoulder, the bilateral symmetry of shaft shoulder lower end is provided with two self-aligning thrust roller bearings 7 be arranged above and below, described two self-aligning thrust roller bearings 7 are separated by axle sleeve, and the annular backup pad be arranged in pedestal 9 holds the self-aligning thrust roller bearing 7 being positioned at below.
Described transmission big gear wheel 5 top and drive pinion 3 are provided with casing 30, casing 30 bottom is fixedly connected with the upper end of pedestal 9, casing 30 has the circular hole corresponding with drive screw 4, the side that casing 30 upper surface is positioned at drive screw 4 is provided with grappling reseting sensor 2, be connected with handwheel 1 after casing 30 is stretched out in the rotating shaft 27 of drive pinion 3 upper end, can M/C be realized in the event of a loss of power.Described drive link 10 comprises two sections and two sections pass through hinge, drive screw 4 axis can be realized and with the axis of revolution anchor pin 11, the special delivery power that to do as usual when misplacing is installed, because revolution anchor pin 12 weight is very large, drive link 10 bears the state of stretching all the time, revolution anchor pin 11 and the face of joint of sleeve 12 inside are oval, ensure that revolution anchor pin 11 vertically can do translation in sleeve 12.Be articulated with the bottom of grappling pin plate 28 in the middle part of described spacing transiting rod 16, the right-hand member of spacing transiting rod 16 upwards bends and extend into grappling pin-and-hole 21, and the left side of spacing transiting rod 16 is provided with and anchors to level sensor 15.
The bottom of described turn table 24 is fixed with deceleration limit mounting bearing 17, the lower end of deceleration limit mounting bearing 17 is provided with deceleration limit sensors 18, the cylinder door frame 23 of described deceleration limit sensors 18 correspondence is provided with deceleration postive stop baffle 19, described deceleration limit sensors baffle plate 19 is the I-beam section of two pieces of arcuate structures, radian and deceleration limit sensors 18 rotary track of two pieces of I-beam sections coincide, and leave gap between two pieces of I-beam sections.
Described centering limit sensors 13, grappling reseting sensor 2 and anchor to level sensor 15 and be opto-electronic pickup with connecting portion, described deceleration limit sensors 18 is opto-electronic pickup.Grappling reducing motor 8 is configured with control panel, and described control panel is provided with grappling button and reset button, and described turn table 24 is provided with turning motor, turning motor is configured with the coder 25 for controlling turn table 24 degreeof turn.
When pressing grappling button, coder 25 judges the position of revolution anchor pin 12, determine the gyratory directions of turn table 24, turning motor drive turn table 24 turns to the position that revolution anchor pin 12 coincides with grappling pin-and-hole 21, grappling reducing motor 8 drives revolution anchor pin 12 to insert in grappling pin-and-hole 21, promote spacing transiting rod 16 after revolution anchor pin 12 touches spacing transiting rod 16 to rotate, anchor to the position that level sensor 15 control revolution anchor pin 12 is advanced downwards.When pressing reset button, grappling reducing motor 8 will turn round anchor pin 12 spin-up, and when drive screw 4 rises to grappling reseting sensor 2, grappling reseting sensor 2 controls the final position that revolution anchor pin 12 is advanced downwards.The subsidiary handwheel 1 of revolution anchor pin 12 top screws, when control system breaks down, can M/C revolution anchoring device.
For achieving the above object, turning motor balanced configuration has two coders 25, anchor station is set to 0 point, 360 ° of revolution range are divided into-180 ° to 0 ° and 0 ° to 180 °, coder 25 is used for recording the particular location of current revolution anchor pin 12, when receiving grappling instruction, judge the gyratory directions of swing type mechanism according to the particular location of revolution anchor pin 12.For ensureing the accuracy of position, revolution is each through 0 time, and control system is by position auto zero.Deceleration limit sensors 18 is installed on turn table 24 inside and moves with high pedestal jib crane rotating part, when deceleration limit sensors 18 has signal, represent that revolution anchor pin 12 is positioned near grappling pin-and-hole 21, according to the particular location determination gyratory directions of the revolution anchor pin 12 that coder 25 records, and slow running, when deceleration limit sensors 18 blackout, swing type mechanism is out of service.After swing type mechanism is out of service, if the zero in revolution anchor pin 12 is spacing receive signal, revolution anchor pin 12 and grappling pin-and-hole 21 centering are described, can grappling.If the zero in revolution anchor pin 12 does not spacingly receive signal, swing type mechanism continues revolution until make zero spacingly receive signal.Revolution anchor pin 12 screws off by the spacing signal system grappling reducing motor 8 received that makes zero, and when anchoring to level sensor 15 and receiving signal, revolution anchor pin 12 grappling runs and puts in place, and grappling reducing motor 8 quits work.When operation wanted by high pedestal jib crane, press reset button, Systematical control grappling reducing motor 8 will turn round anchor pin 12 spin-up, and when grappling reseting sensor 2 receives signal, revolution anchor pin 12 resets and puts in place, and grappling reducing motor 8 quits work.Wherein grappling drive screw bottom is provided with postive stop baffle 20, in drive screw 4 spin-up or put down in process, spacing 15 or grappling reseting sensor 2 when breaking down if grappling puts in place, postive stop baffle 20 touches pedestal 9, after grappling reducing motor 8 electric current exceedes rated current, control system is cut off the electricity supply, and failure alarm signal is pointed out.
The utility model design automation degree is high, easy and simple to handle, artificial only needs carries out revolution grappling contraposition by guidance panel control swing type mechanism, the very big safety improving operation, revolution grappling only needs driver's push key just can complete, efficiency is high, is the important component part of harbour machinery automation development.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (10)
1. a novel span winch automatic rotating anchoring device, comprise pedestal and grappling pin plate, it is characterized in that: described base bottom is connected with bracing frame, support frame as described above right-hand member is fixedly connected with the turn table of hoisting crane, turn table lower end is provided with the cylinder door frame of hoisting crane, described pedestal is cavity structure, vertical drive screw is provided with in pedestal, described drive screw top is configured with transmission big gear wheel, described transmission big gear wheel engages with the drive pinion of its side, and drive pinion lower end is connected with grappling reducing motor; Drive link is connected with after bracing frame is stretched out in described drive screw lower end, described drive link lower end is hinged with vertical revolution anchor pin, revolution anchor pin is configured with sleeve, sleeve is connected with turn table by the support of turn table, revolution anchor pin can be moved in sleeve, described lower cartridge is provided with centering limit sensors near the side of turn table, the right side of described centering limit sensors is provided with the grappling centering baffle plate be fixed on grappling pin plate, and leaves gap between centering limit sensors and grappling centering baffle plate; Described grappling pin plate is arranged on the below of sleeve and is connected to turn table, and described grappling pin plate has the grappling pin-and-hole suitable with turning round anchor pin, the bottom of grappling pin plate is provided with spacing transiting rod.
2. one according to claim 1 novel span winch automatic rotating anchoring device, it is characterized in that: described drive screw upper part is threaded and lower surface is smooth, drive screw top cover has the transmission inner nut be arranged in transmission big gear wheel, transmission inner nut and transmission big gear wheel are connected by screw integral, and transmission inner nut adopts high-abrasive material ZCuAl
10fe
3, transmission inner nut and drive screw adopt thread screw thread, and when transmission inner nut rotates, drive screw vertically moves.
3. one according to claim 1 and 2 novel span winch automatic rotating anchoring device, it is characterized in that: in described pedestal, the smooth part of drive screw is fixed with the postive stop baffle identical with drive screw lower end, described postive stop baffle is for limiting the up-and-down movement stroke of drive screw, bottom the postive stop baffle of screw rod lower end, otic placode is installed, described otic placode by bearing pin and drive link hinged.
4. one according to claim 1 and 2 novel span winch automatic rotating anchoring device, it is characterized in that: the gear teeth on described transmission big gear wheel top are positioned at above pedestal, the smooth part of transmission big gear wheel bottom to be arranged in pedestal and with the shaft shoulder, the bilateral symmetry of shaft shoulder lower end is provided with two self-aligning thrust roller bearings be arranged above and below, described two self-aligning thrust roller bearings are separated by axle sleeve, and the annular backup pad be arranged in pedestal holds the self-aligning thrust roller bearing being positioned at below.
5. one according to claim 1 novel span winch automatic rotating anchoring device, it is characterized in that: described transmission big gear wheel top and drive pinion outer setting have casing, casing bottom is fixedly connected with the upper end of pedestal, casing has the circular hole corresponding with drive screw, the side that casing upper surface is positioned at drive screw is provided with grappling reseting sensor, is connected with handwheel after casing is stretched out in the rotating shaft of drive pinion upper end.
6. one according to claim 1 novel span winch automatic rotating anchoring device, it is characterized in that: described drive link comprises two sections and two sections pass through hinge, make drive screw axis, with the axis of revolution anchor pin, the special delivery power that to do as usual when misplacing is installed, the face of joint of revolution anchor pin and sleeve inner is oval, ensures that revolution anchor pin vertically can do translation in sleeve.
7. one according to claim 5 novel span winch automatic rotating anchoring device, it is characterized in that: the bottom being articulated with grappling pin plate in the middle part of described spacing transiting rod, the right-hand member of spacing transiting rod upwards bends and extend into grappling pin-and-hole, and the left side of spacing transiting rod is provided with and anchors to level sensor.
8. one according to claim 7 novel span winch automatic rotating anchoring device, it is characterized in that: the bottom of described turn table is fixed with deceleration limit mounting bearing, the lower end of deceleration limit mounting bearing is provided with deceleration limit sensors, the cylinder door frame that described deceleration limit sensors is corresponding is provided with deceleration postive stop baffle, described deceleration limit sensors baffle plate is the I-beam section of two pieces of arcuate structures, the radian that two pieces of I-beam sections are bending and deceleration limit sensors rotary track coincide, and leave gap between two pieces of I-beam sections.
9. one according to claim 8 novel span winch automatic rotating anchoring device, it is characterized in that: described centering limit sensors, grappling reseting sensor and anchor to level sensor and be opto-electronic pickup with connecting portion, described deceleration limit sensors is be installed on the opto-electronic pickup on deceleration limit mounting bearing.
10. one according to claim 1 novel span winch automatic rotating anchoring device, it is characterized in that: grappling reducing motor is configured with control panel, described control panel is provided with grappling button and reset button, described turn table is provided with turning motor, and on turning motor, balanced configuration has two for controlling the coder of turn table degreeof turn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420541613.1U CN204150964U (en) | 2014-09-19 | 2014-09-19 | A kind of novel span winch automatic rotating anchoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420541613.1U CN204150964U (en) | 2014-09-19 | 2014-09-19 | A kind of novel span winch automatic rotating anchoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204150964U true CN204150964U (en) | 2015-02-11 |
Family
ID=52509100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420541613.1U Withdrawn - After Issue CN204150964U (en) | 2014-09-19 | 2014-09-19 | A kind of novel span winch automatic rotating anchoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204150964U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261265A (en) * | 2014-09-19 | 2015-01-07 | 青岛海西重机有限责任公司 | Novel full-automatic rotation anchoring device of gantry crane |
| CN110562849A (en) * | 2019-08-08 | 2019-12-13 | 南通中远重工有限公司 | Electric anchoring device for crane trolley |
-
2014
- 2014-09-19 CN CN201420541613.1U patent/CN204150964U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104261265A (en) * | 2014-09-19 | 2015-01-07 | 青岛海西重机有限责任公司 | Novel full-automatic rotation anchoring device of gantry crane |
| CN104261265B (en) * | 2014-09-19 | 2016-08-24 | 青岛海西重机有限责任公司 | A kind of novel gantry crane automatic rotating anchoring device |
| CN110562849A (en) * | 2019-08-08 | 2019-12-13 | 南通中远重工有限公司 | Electric anchoring device for crane trolley |
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|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150211 Effective date of abandoning: 20160824 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |