CN104692257A - Single-beam overhead crane - Google Patents
Single-beam overhead crane Download PDFInfo
- Publication number
- CN104692257A CN104692257A CN201510119289.3A CN201510119289A CN104692257A CN 104692257 A CN104692257 A CN 104692257A CN 201510119289 A CN201510119289 A CN 201510119289A CN 104692257 A CN104692257 A CN 104692257A
- Authority
- CN
- China
- Prior art keywords
- girder
- overhead crane
- cart
- end carriage
- track
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C17/00—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports
- B66C17/04—Overhead travelling cranes comprising one or more substantially horizontal girders the ends of which are directly supported by wheels or rollers running on tracks carried by spaced supports with lifting beams, e.g. slewable beams, carrying load-engaging elements, e.g. magnets, hooks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C15/00—Safety gear
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Carriers, Traveling Bodies, And Overhead Traveling Cranes (AREA)
Abstract
The invention discloses a single-beam overhead crane in one embodiment. The single-beam overhead crane comprises a beam frame, a cart, a trolley, an electric block and a control mechanism; an end beam is composed of end beams on the two sides and a main beam connected with the end beams; the end beams are driven by the cart to travel on an end beam track; the electric block runs on a main beam track along with the trolley; a guide wheel device is mounted on the frame of the cart or the trolley or on both the frames of the cart and the trolley to keep the cart and/or the trolley run stably; the control mechanism is provided with an anti-crossing system to shut down a motor in case of a crossing fault. According to the single-beam overhead crane, the overall single-beam overhead crane and the auxiliary system thereof are improved, and therefore, the performance of the product can be improved in the aspects of manufacturing cost reduction, steady operation guarantee, safety performance improvement and the like.
Description
Technical field
The present invention relates to elevator machinery, particularly relate to mono beam overhead crane in bridge type and subsystem thereof.
Background technology
Mono beam overhead crane in bridge type is a kind of common elevator machinery, comprise the parts such as roof beam structure, cart, dolly, electric block and control mechanism: roof beam structure is made up of with the girder being connected end carriage both sides end carriage, end carriage is driven by cart and runs on end carriage track, electric block runs on girder track with dolly, thus by the workpiece of suspension hook lifting relevant position.Structurally there is certain defect in existing mono beam overhead crane in bridge type: such as, and girder and end carriage are the case structure of assembly welding, and material use is reasonable not, is unfavorable for reducing costs; And for example, the track adjusting wheel of cart and dolly all can not adjust the gap with track, affects running stability; For another example, intermediate steps during the anti-offside system-down of cart, dolly and electric block is more, if certain link goes wrong, will cause cannot stopping in time and safety misadventure occurring; Etc..Because above-mentioned all many-sided deficiencies, be necessary to be improved existing mono beam overhead crane in bridge type.
Summary of the invention
For the defect that prior art exists, the object of the embodiment of the present invention is to improve mono beam overhead crane in bridge type complete machine and subsystem thereof, so that the performance of improving product at least in one aspect.
For solving above technical matters, the embodiment of the present invention provides a kind of mono beam overhead crane in bridge type, comprise roof beam structure, cart, dolly, electric block and control mechanism, end carriage is made up of with the girder being connected end carriage both sides end carriage, cart drives end carriage to run on end carriage track, electric block runs on girder track with dolly, and girder has the girder casing that top is rectangle, bottom is the cross section of equicrural triangle, and end carriage has the end carriage casing in inverted U-shaped cross section.
More preferably, girder is become to have the girder casing that top is rectangle, bottom is the cross section of equicrural triangle by roof limb plate, front and back side plate, front and back web assembly welding, the end connecting panel of girder casing and end carriage bolted, the front and back web welding girder track of girder bottom half is to carry trolley travelling.
More preferably, the front and back side plate in girder casing runs through some support pipes, and girder box house installs multiple dividing plate additional, girder track welding brace panel, and girder rail end is fixed with one by bottom connecting plate and end connecting panel.
More preferably, girder carrys out the electrical equipments such as installing cables arranging electric support close to medium position, is carrying out installation carriage energy disperser near end positions respectively by dolly bumper support.
More preferably, end carriage becomes to have the end carriage casing in inverted U-shaped cross section by top board, left side plate assembly welding, and the end L shape cover plate shutoff of end carriage casing, the bottom edgefold of cover plate is held left side plate to gain in strength, and cover plate is installed cart energy disperser.
More preferably, the middle part of end carriage casing left side plate installs adapter plate additional and fixes the end connecting girder, end carriage casing left side plate close to the position that cart is installed in end weld respectively strengthen gusset to install cart main motor train unit and by motor train unit.
More preferably, the vehicle frame of cart and/or dolly is provided with guide wheel device to make cart and/or dolly smooth running.
More preferably, guide wheel device comprises L shape track adjusting wheel bearing, track adjusting wheel body, wheel shaft, connection rotating plate and pressing plate, track adjusting wheel bearing is arranged on vehicle frame, a bottom edgefold of track adjusting wheel bearing offers strip shape bearing axis hole, wheel shaft runs through bearing axis hole and can carry out transverse shifting along perpendicular to track bearing of trend, track adjusting wheel body is rotatably installed on the first end of wheel shaft by bearing, connection rotating plate is by being fixed in the second end of wheel shaft relative to the pressing plate of track adjusting wheel support outer and fastener, the first end of connection rotating plate is hinged to track adjusting wheel bearing, second end of connection rotating plate offers some flap knock holees, track adjusting wheel bearing is offered some bearing knock holees, assemble locking piece in flap knock hole and bearing knock hole and the second end of connection rotating plate is lock onto track adjusting wheel bearing.
More preferably, motor is stopped to run when control mechanism has anti-offside system to make to occur offside fault.
More preferably, anti-offside system series contactor between the motor protective circuit breaker and frequency converter of motor control loop, the offside switch series in upper bottom is linked to the control loop of contactless switch, the offside unlock key knob of the offside switch in parallel in upper bottom.
Compared with prior art, the embodiment of the present invention is improved mono beam overhead crane in bridge type complete machine and subsystem thereof, properties of product can be improved thus, it shows in the following areas: girder forms the section form of rectangle+equicrural triangle by roof limb plate, front and back side plate and front and back web, end carriage forms inverted U-shaped section form by top board and left side plate, on the basis of proof strength, effectively can reduce the cost of roof beam structure; Track adjusting wheel body wheel shaft position in cart, car frame can adjust, and the convenient gap regulating track adjusting wheel body and track, is conducive to ensureing complete machine running stability; In the major loop of the electric machine control of anti-offside system, install a contactless switch between motor protective circuit breaker and frequency converter additional, contribute to the operation stopping motor fast, thus effectively reduce safety misadventure.
Accompanying drawing explanation
Fig. 1 a is the front view of mono beam overhead crane in bridge type of the present invention;
Fig. 1 b is the birds-eye view of mono beam overhead crane in bridge type of the present invention;
Fig. 1 c is the right elevation of mono beam overhead crane in bridge type of the present invention;
Fig. 2 a is the front view of mono beam overhead crane in bridge type middle girder of the present invention;
Fig. 2 b is the birds-eye view of mono beam overhead crane in bridge type middle girder of the present invention;
Fig. 2 c is mono beam overhead crane in bridge type middle girder A-A view of the present invention;
Fig. 3 a is the front view of end carriage in mono beam overhead crane in bridge type of the present invention;
Fig. 3 b is the birds-eye view of end carriage in mono beam overhead crane in bridge type of the present invention;
Fig. 4 is the guide wheel device schematic diagram of dolly in mono beam overhead crane in bridge type of the present invention;
Fig. 5 a is the electrical schematic diagram of anti-offside system in mono beam overhead crane in bridge type of the present invention;
Fig. 5 b is the electrical connection graph of the offside switch of anti-offside system in mono beam overhead crane in bridge type of the present invention.
Detailed description of the invention
In order to understand know-why and the working process of the embodiment of the present invention better, describe the present invention further below in conjunction with drawings and the specific embodiments.
Simultaneously see Fig. 1 a-Fig. 1 c, the complete machine structure of mono beam overhead crane in bridge type of the present invention is shown.Mono beam overhead crane in bridge type (hereinafter referred to as hoisting crane) as shown in Fig. 1 a-Fig. 1 c, middle girder 2 and both sides end carriage 3 are connected as roof beam structure, end carriage track 11b is fixed on workshop steel structure 1 by end carriage track bearing 11a, end carriage 3 can run under cart (comprise main motor train unit 12a and by motor train unit 12b) drives on end carriage track 11b, electric block 7 runs on girder track with dolly 4, manipulate hoisting crane by remote controller 5 to move in three directions, suspension hook 8 can lift by crane the workpiece (scheming not shown) of relevant position easily.
In roof beam structure shown in Fig. 1 a-Fig. 1 c, girder 2 and end carriage 3 are formed by some sheet material assembly weldings, its middle girder 2 has the section form being approximately rectangle+equicrural triangle, end carriage 3 has and is approximately inverted U-shaped section form, like this on the basis of proof strength, effectively can reduce the cost of roof beam structure, illustrate further below.
See Fig. 2 a ~ Fig. 2 c, the structure of mono beam overhead crane in bridge type middle girder of the present invention is shown.This girder 2 is become to have the section form girder casing being approximately rectangle+equicrural triangle by assembly weldings such as roof limb plate 26, front and back side plate 23, front and back webs 24, the end connecting panel 25b of this girder casing and end carriage 3 bolted, the front and back web 24 of girder bottom half welds girder track 28 and runs to carry dolly 4.Further, front and back side plate 23 in girder casing runs through some support pipes 27, girder box house installs multiple dividing plate 22 additional, girder track 28 welds brace panel 29, girder track 28 end is fixed with one by bottom connecting plate 25a and end connecting panel 25b, is conducive to the intensity strengthening girder 2 like this.
As shown in Fig. 2 a ~ Fig. 2 c, girder 2 carrys out the electrical equipments such as installing cables arranging electric support 6 close to medium position, is carrying out installation carriage energy disperser 21b with the impact avoiding the anxious stopping time to produce near end positions respectively by dolly bumper support 21a.In addition, this girder 2 also adds the annex such as nameplate 9, tonnage board 10 above, does not repeat them here.
See Fig. 3 a ~ Fig. 3 b, the structure of end carriage in mono beam overhead crane in bridge type of the present invention is shown.This end carriage 3 forms by top board 32, left side plate 31 the end carriage casing being approximately inverted U-shaped section form: end L shape cover plate 33 shutoff of this end carriage casing, the bottom edgefold of this cover plate 33 can be held left side plate 31 simultaneously and gain in strength, and this cover plate 33 is also installed cart energy disperser 36 simultaneously and reduces to impact; The middle part of this end carriage casing left side plate 31 installs adapter plate 34 additional and fixes the end connecting panel 25b connecting girder 2, reinforcement gusset is welded respectively to install cart in the position that this end carriage casing left side plate 31 installs cart close to end, wherein strengthen gusset 35a place and main motor train unit 12a is installed, strengthen gusset 35b place and install by motor train unit 12b.After the electric motor starting of main motor train unit 12a, end carriage runs along end carriage track 11b under cart drives.
See Fig. 4, the guide wheel device of dolly in mono beam overhead crane in bridge type of the present invention is shown.This guide wheel device can be installed on the vehicle frame of cart and dolly, can adjust the gap with track easily thus, can ensure hoisting crane running stability thus.Below so that guide wheel device 41 to be installed by dolly 4, be described in detail.
As shown in Figure 4, this guide wheel device 41 is made up of the parts such as track adjusting wheel bearing 413, track adjusting wheel body 412, wheel shaft (figure does not indicate), connection rotating plate 414, pressing plate 415, further describes as follows.On the vehicle frame of L shape track adjusting wheel bearing 413 installation carriage 4, its bottom edgefold offers strip shape bearing axis hole 420, wheel shaft runs through this bearing axis hole 420 and can be mobile along carrying out transverse direction (wheel shaft is vertical) perpendicular to track bearing of trend, track adjusting wheel body 412 is rotatably installed on the first end of wheel shaft by bearing, connection rotating plate 414 is by being fixed in the second end of wheel shaft relative to the pressing plate 415 outside track adjusting wheel bearing 413 and socket head cap screw 416 (or other fastener), wheel shaft 3 can be fixed on connection rotating plate 7 by this connection mode easily, operation connection rotating plate 414 can make wheel shaft drive track adjusting wheel body 412 transverse shifting.
As shown in Figure 4, connection rotating plate 414 in the present embodiment can rotate, concrete structure is: the first end of connection rotating plate 414, using socket head cap screw 411 as the hinging pin shaft between connection rotating plate 414 and track adjusting wheel bearing 413, makes the first end of connection rotating plate 414 be hinged on track adjusting wheel bearing 413; Some flap knock holees 419 can be offered above second end of connection rotating plate 414, and on track adjusting wheel bearing 413, correspondingly offer bearing knock hole (scheming not shown), assemble socket head cap screw 417 in this flap knock hole 419 and bearing knock hole, and the second end of connection rotating plate 414 just can be lock onto on track adjusting wheel bearing 413 by bonding pad 418.Second end of connection rotating plate 414 herein offers arc strip flap knock hole 419, and its bearing of trend is corresponding with the hand of rotation of connection rotating plate 414, interferes to avoid mobile generation of socket head cap screw 417 pairs of connection rotating plates 414.After connection rotating plate 414 drives wheel shaft to rotate in place, just can connection rotating plate 414 be locked on track adjusting wheel bearing 413 after screwing socket head cap screw 417, finally achieve the adjustment of track adjusting wheel body 412 and track space.
Simultaneously see Fig. 5 a-Fig. 5 b, illustrate that the present invention prevents the circuit structure of offside system.This anti-offside system can be used for cart, dolly and electric block, and its electrical structure is: in the control loop of motor M 01, adds a contactless switch KM01 between motor protective circuit breaker QF01 and frequency converter VF01; The offside switch S Q01 in upper bottom, SQ02 are connected in series in the control loop of this contactless switch KM01.Herein; the terminal 1-6 of motor protective circuit breaker QF01; A1, A2 (three groups of terminals 1,2) of contactless switch KM01; terminal R, S, T, V, W, PE of frequency converter VF01; the terminal 11,12 of offside switch S Q01, SQ02; and the terminal 13,14 of offside unlock key knob SB01 is connected with Fig. 5 b according to Fig. 5 a, no longer specifically launches explanation.
After offside switch S Q01 or SQ02 is triggered, directly cut off the coil power of contactless switch KM01, contactless switch KM01 discharges, and cuts off the power supply in frequency converter VF01 loop thus, thus stops the operation of motor M 01 fast; After this, can unlock by rotating offside unlock key knob SB01.This mode, decreases the intermediate link processing offside signal, and time fault is occurred, motor can stop at once, avoids the damage of equipment and the injures and deaths of personnel.
Although the present invention with preferred embodiment openly as above; but it is not for limiting the present invention; any those skilled in the art without departing from the spirit and scope of the present invention; can make possible variation and amendment, the scope that therefore protection scope of the present invention should define with the claims in the present invention is as the criterion.
Claims (10)
1. a mono beam overhead crane in bridge type, it is characterized in that, comprise roof beam structure, cart, dolly, electric block and control mechanism, end carriage is made up of with the girder being connected end carriage both sides end carriage, cart drives end carriage to run on end carriage track, electric block runs on girder track with dolly, and girder has the girder casing that top is rectangle, bottom is the cross section of equicrural triangle, and end carriage has the end carriage casing in inverted U-shaped cross section.
2. mono beam overhead crane in bridge type as claimed in claim 1, it is characterized in that, girder is become to have the girder casing that top is rectangle, bottom is the cross section of equicrural triangle by roof limb plate, front and back side plate, front and back web assembly welding, the end connecting panel of girder casing and end carriage bolted, the front and back web welding girder track of girder bottom half is to carry trolley travelling.
3. mono beam overhead crane in bridge type as claimed in claim 2, it is characterized in that, the front and back side plate in girder casing runs through some support pipes, and girder box house installs multiple dividing plate additional, girder track welding brace panel, girder rail end is fixed with one by bottom connecting plate and end connecting panel.
4. mono beam overhead crane as claimed in claim 3, is characterized in that, girder carrys out the electrical equipments such as installing cables arranging electric support close to medium position, is carrying out installation carriage energy disperser near end positions respectively by dolly bumper support.
5. mono beam overhead crane in bridge type as claimed in claim 1, it is characterized in that, end carriage becomes to have the end carriage casing in inverted U-shaped cross section by top board, left side plate assembly welding, the end L shape cover plate shutoff of end carriage casing, the bottom edgefold of cover plate is held left side plate to gain in strength, and cover plate is installed cart energy disperser.
6. mono beam overhead crane in bridge type as claimed in claim 5, it is characterized in that, the middle part of end carriage casing left side plate installs adapter plate additional and fixes the end connecting girder, end carriage casing left side plate close to the position that cart is installed in end weld respectively strengthen gusset to install cart main motor train unit and by motor train unit.
7. mono beam overhead crane in bridge type as claimed in claim 1, is characterized in that, the vehicle frame of cart and/or dolly is provided with guide wheel device to make cart and/or dolly smooth running.
8. mono beam overhead crane in bridge type as claimed in claim 7, it is characterized in that, guide wheel device comprises L shape track adjusting wheel bearing, track adjusting wheel body, wheel shaft, connection rotating plate and pressing plate, track adjusting wheel bearing is arranged on vehicle frame, a bottom edgefold of track adjusting wheel bearing offers strip shape bearing axis hole, wheel shaft runs through bearing axis hole and can carry out transverse shifting along perpendicular to track bearing of trend, track adjusting wheel body is rotatably installed on the first end of wheel shaft by bearing, connection rotating plate is by being fixed in the second end of wheel shaft relative to the pressing plate of track adjusting wheel support outer and fastener, the first end of connection rotating plate is hinged to track adjusting wheel bearing, second end of connection rotating plate offers some flap knock holees, track adjusting wheel bearing is offered some bearing knock holees, assemble locking piece in flap knock hole and bearing knock hole and the second end of connection rotating plate is lock onto track adjusting wheel bearing.
9. mono beam overhead crane in bridge type as claimed in claim 1, is characterized in that, stops motor running when control mechanism has anti-offside system to make to occur offside fault.
10. mono beam overhead crane in bridge type as claimed in claim 9; it is characterized in that; anti-offside system series contactor between the motor protective circuit breaker and frequency converter of motor control loop, the offside switch series in upper bottom is linked to the control loop of contactless switch, the offside unlock key knob of the offside switch in parallel in upper bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119289.3A CN104692257A (en) | 2015-03-18 | 2015-03-18 | Single-beam overhead crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119289.3A CN104692257A (en) | 2015-03-18 | 2015-03-18 | Single-beam overhead crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104692257A true CN104692257A (en) | 2015-06-10 |
Family
ID=53339886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510119289.3A Withdrawn CN104692257A (en) | 2015-03-18 | 2015-03-18 | Single-beam overhead crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104692257A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366540A (en) * | 2015-11-18 | 2016-03-02 | 德马科起重机械有限公司 | Crane main girder and crane employing main girder |
| CN105800462A (en) * | 2016-05-16 | 2016-07-27 | 无锡石油化工起重机有限公司 | Anti-explosion electric single beam crane |
| CN105905799A (en) * | 2016-06-23 | 2016-08-31 | 合肥市神雕起重机械有限公司 | Anti-falling device for crane trolley |
| CN106006373A (en) * | 2016-07-15 | 2016-10-12 | 杭州市特种设备检测研究院 | Beam crane with top-arranged angular trolley |
| CN106429829A (en) * | 2016-11-04 | 2017-02-22 | 合肥市春华起重机械有限公司 | Electric single-beam crane |
| CN108249298A (en) * | 2016-12-29 | 2018-07-06 | 天津德仕达起重输送设备有限公司 | Flexible beam lifting equipment |
| CN108557651A (en) * | 2018-05-29 | 2018-09-21 | 湖北卡斯工业科技有限公司 | The accurate folding and unfolding hanging of massive casting mold |
| CN108750952A (en) * | 2017-12-20 | 2018-11-06 | 江苏耐维思通科技股份有限公司 | A kind of remote control intelligent collision driving of automatic running |
| CN108840244A (en) * | 2017-12-20 | 2018-11-20 | 江苏耐维思通科技股份有限公司 | A kind of intelligent travelling crane control assembly lifted automatically |
| CN111957667A (en) * | 2019-05-20 | 2020-11-20 | 中冶宝钢技术服务有限公司 | Dust cleaning device and method for driving motorcycle electric channel |
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| CN204150965U (en) * | 2014-10-21 | 2015-02-11 | 天津运城塑业有限公司 | A kind of spacing shutdown feature |
| CN204569204U (en) * | 2015-03-18 | 2015-08-19 | 周磊 | Single-beam overhead traveling crane |
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| CN2222154Y (en) * | 1995-05-26 | 1996-03-13 | 陈登云 | Hinged single-beam bridge like crane |
| JP2008168953A (en) * | 2007-01-05 | 2008-07-24 | Hitachi Constr Mach Co Ltd | Overhead traveling type handling device |
| CN202449737U (en) * | 2012-01-19 | 2012-09-26 | 胡相兰 | Main girder of electric single-girder crane |
| CN202594631U (en) * | 2012-05-25 | 2012-12-12 | 武汉钢铁(集团)公司 | End beam device for electric single beam crane |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105366540A (en) * | 2015-11-18 | 2016-03-02 | 德马科起重机械有限公司 | Crane main girder and crane employing main girder |
| CN105800462A (en) * | 2016-05-16 | 2016-07-27 | 无锡石油化工起重机有限公司 | Anti-explosion electric single beam crane |
| CN105905799A (en) * | 2016-06-23 | 2016-08-31 | 合肥市神雕起重机械有限公司 | Anti-falling device for crane trolley |
| CN105905799B (en) * | 2016-06-23 | 2018-05-11 | 泉州经济技术开发区盈瑞恒机电有限公司 | A kind of monkey falling proof device |
| CN106006373A (en) * | 2016-07-15 | 2016-10-12 | 杭州市特种设备检测研究院 | Beam crane with top-arranged angular trolley |
| CN106429829A (en) * | 2016-11-04 | 2017-02-22 | 合肥市春华起重机械有限公司 | Electric single-beam crane |
| CN108249298A (en) * | 2016-12-29 | 2018-07-06 | 天津德仕达起重输送设备有限公司 | Flexible beam lifting equipment |
| CN108750952A (en) * | 2017-12-20 | 2018-11-06 | 江苏耐维思通科技股份有限公司 | A kind of remote control intelligent collision driving of automatic running |
| CN108840244A (en) * | 2017-12-20 | 2018-11-20 | 江苏耐维思通科技股份有限公司 | A kind of intelligent travelling crane control assembly lifted automatically |
| CN108557651A (en) * | 2018-05-29 | 2018-09-21 | 湖北卡斯工业科技有限公司 | The accurate folding and unfolding hanging of massive casting mold |
| CN111957667A (en) * | 2019-05-20 | 2020-11-20 | 中冶宝钢技术服务有限公司 | Dust cleaning device and method for driving motorcycle electric channel |
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Address after: Huang Shan Zhen 311809 Zhejiang city of Shaoxing province Zhuji City, the East Road No. 66 Applicant after: Zhou Lei Address before: 311833, Dalin village, 739 East Xiang Township, Shaoxing City, Zhejiang, Zhuji Applicant before: Zhou Lei |
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Application publication date: 20150610 |