CN202322034U - Crane driven by switched reluctance motor - Google Patents
Crane driven by switched reluctance motor Download PDFInfo
- Publication number
- CN202322034U CN202322034U CN2011204002506U CN201120400250U CN202322034U CN 202322034 U CN202322034 U CN 202322034U CN 2011204002506 U CN2011204002506 U CN 2011204002506U CN 201120400250 U CN201120400250 U CN 201120400250U CN 202322034 U CN202322034 U CN 202322034U
- Authority
- CN
- China
- Prior art keywords
- switched reluctance
- reluctance machines
- drg
- retarder
- hoisting crane
- 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.)
- Expired - Lifetime
Links
- 230000000694 effects Effects 0.000 description 7
- 239000003638 reducing agent Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004134 energy conservation Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 230000003137 locomotive Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reaction Methods 0.000 description 1
- 230000000051 modifying Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000630 rising Effects 0.000 description 1
- 238000004642 transportation engineering Methods 0.000 description 1
Abstract
The utility model discloses a crane driven by switched reluctance motors, and belongs to the technical field of the industrial crane. The crane comprises a lift luffing mechanism, a travelling mechanism and a slewing mechanism, wherein the lift luffing mechanism comprises a first switched reluctance motor and a reel, and the first switched reluctance motor is connected with the reel; the travelling mechanism comprises a second switched reluctance motor and vehicle wheels, and the second switched reluctance motor is connected with the vehicle wheels; and the slewing mechanism comprises a third switched reluctance motor and a rotation driving mechanism, and the third switched reluctance motor is connected with the rotation driving mechanism. According to the crane disclosed by the utility model, the lift luffing mechanism, the traveling mechanism and the slewing mechanism of the crane are separately driven by the switched reluctance motors. Under the condition of realizing all the functions of the crane, the energy utilization efficiency of the crane is enhanced, the weight of the mechanical system is reduced, the structure is simplified, and the maintenance frequency is lowered.
Description
Technical field
The utility model relates to industrial hoisting crane technical field, particularly a kind of hoisting crane that adopts switched reluctance machines to drive.
Background technology
Hoisting crane is to be used for mechanical equipment to operations such as material lifting, transportation, loading and unloading and installations, generally is made up of machinery, structure and electric three parts.Mechanical aspects is meant and hoists, operation, luffing and revolution mechanisms such as (rotations); The principle of work of these mechanisms is basic identical; It all is crane and metallurgical motor special connection reducer high speed shaft; Improve moment of torsion through retarder speed ratio rev down, again the low speed output shaft is connected with execution architecture (reel, wheel, gear ring etc.), the hoisting of realization hoisting crane, operation, luffing and revolution actions such as (rotations).But; Brake because the operating mode of hoisting crane be frequent rising, and the working load majority is the situation less than rated load, and original crane and metallurgical motor special only just can reach maximal efficiency under the operating mode of rated load; Therefore work efficiency is very low when playing braking and hoisting capacity less than rated load; This has just caused lot of energy to be wasted in the course of the work, makes whole mechanical system to carry out the type selecting configuration according to lower efficient, has increased the weight of whole mechanical system.
Summary of the invention
Low in order to overcome existing hoisting crane efficient, shortcoming such as mechanical system weight is big, the utility model provides a kind of hoisting crane that adopts switched reluctance machines to drive, and said hoisting crane comprises lifting amplitude-change mechanism, operating unit and swing type mechanism;
Said lifting amplitude-change mechanism comprises first switched reluctance machines and reel, and said first switched reluctance machines is connected with reel; Said operating unit comprises second switch reluctance motor and wheel, and said second switch reluctance motor is connected with wheel; Said swing type mechanism comprises the 3rd switched reluctance machines and rotary motion mechanism, and said the 3rd switched reluctance machines is connected with rotary motion mechanism.
Said lifting amplitude-change mechanism also comprises first coupler, first retarder and first drg; Said first switched reluctance machines connects said first retarder through said first coupler, and said first retarder connects said reel; Said first drg is positioned at a side or the both sides of said first retarder; Perhaps be positioned at the one or both sides of said first switched reluctance machines; Perhaps be positioned at a side of said first switched reluctance machines and first retarder, perhaps be positioned at the both sides of said first switched reluctance machines and first retarder.
Said lifting amplitude-change mechanism also comprises first drg; Said first drg is positioned at a side or the both sides of said reel.
Said operating unit also comprises second coupler, second retarder and second drg; Said second switch reluctance motor connects said second retarder through said second coupler, and said second retarder connects said wheel; Said second drg is positioned at a side or the both sides of said second retarder, perhaps is positioned at the one or both sides of said second switch reluctance motor.
Said operating unit also comprises second drg, and said second drg is positioned at the both sides of said second switch reluctance motor, perhaps the both sides of said wheel.
Said swing type mechanism also comprises the 3rd coupler, the 3rd retarder and the 3rd drg; Said the 3rd switched reluctance machines connects said the 3rd retarder through said the 3rd coupler, and said the 3rd retarder connects said rotary motion mechanism; Said the 3rd drg is positioned at the one or both sides of said the 3rd retarder, perhaps is positioned at the one or both sides of said the 3rd switched reluctance machines.
Said swing type mechanism also comprises the 3rd drg; Said the 3rd drg is positioned at the one or both sides of said the 3rd switched reluctance machines; Perhaps be positioned at the one or both sides of said rotary motion mechanism; Perhaps be positioned at a side of said the 3rd switched reluctance machines and rotary motion mechanism, perhaps be positioned at the both sides of said the 3rd switched reluctance machines and rotary motion mechanism.
Said drg is magnet stopper, hydraulic push-rod brake, external contracting drum brake or plate disc brake.
The quantity of said drg is at least one.
The hoisting crane that the employing switched reluctance machines of the utility model drives can increase substantially the energy service efficiency of hoisting crane, reduces power consumption; The hoisting crane of the utility model through adopting switched reluctance machines to drive, make each of hoisting crane form that mechanism structure is simple, volume is little, in light weight, especially lifting mechanism simple in structure, wearing and tearing are low, improved the service life and the reliability of hoisting crane.Simultaneously, the output torque of switched reluctance machines is directly proportional with received current and the control that can make hoisting crane to the characteristics of output speed full cut-off ring control accurate and flexible more.
Description of drawings
Fig. 1 is the structural representation of the lifting amplitude-change mechanism of the utility model embodiment hoisting crane;
Fig. 2 is the structural representation of the operating unit of the utility model embodiment hoisting crane;
Fig. 3 is the structural representation of the swing type mechanism of the utility model embodiment hoisting crane;
Fig. 4 is the structural representation of the utility model embodiment hoisting crane lifting amplitude-change mechanism under special operation condition;
Fig. 5 is the structural representation of the utility model embodiment hoisting crane operating unit under special operation condition;
Fig. 6 is the structural representation of the utility model embodiment hoisting crane in special operation condition turning down mechanism.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model technical scheme is further described.
The utility model provides a kind of hoisting crane that adopts switched reluctance machines to drive; This hoisting crane adopts the structural principle and the characteristics of switched reluctance machines, makes switched reluctance machines drive lifting amplitude-change, operation and the swing type mechanism of hoisting crane respectively, is realizing having now under the situation of hoisting crane repertoire; Improved the energy service efficiency of hoisting crane; Reduced the weight of mechanical system, simplified structure reduces frequency of maintenance.
The hoisting crane that the employing switched reluctance machines that the utility model embodiment provides drives comprises lifting amplitude-change mechanism, operating unit and swing type mechanism.Following mask body is introduced the annexation of lifting amplitude-change mechanism, operating unit and the swing type mechanism of the hoisting crane that switched reluctance machines drives, and the annexation of hoisting crane each mechanism of special operation condition under requiring.
Referring to Fig. 1, the lifting amplitude-change mechanism of the utility model embodiment hoisting crane comprises drg 1-1, switched reluctance machines 1-2, coupler 1-3, retarder 1-4 and reel 1-6.Switched reluctance machines 1-2 is through coupler 1-3 connection reducer 1-4, and retarder 1-4 connects reel 1-6, and reel 1-6 is fixed in the drum shaft bearing 1-5 support.In the present embodiment, retarder 1-4 direct connection reel 1-6; In practical implementation, retarder 1-4 can also connect reel 1-6 through coupler.Drg 1-1 adopts the high speed shaft braking; Choose kind and the quantity of drg 1-1 according to the requirement of lock torque; The kind of drg 1-1 can but to be not limited to be magnet stopper, hydraulic push-rod brake, external contracting drum brake or plate disc brake; Its quantity can be 1,2 or a plurality of, and drg 1-1 can be positioned at a side or the both sides of retarder 1-4, perhaps can be positioned at the one or both sides of switched reluctance machines 1-2; Perhaps can be positioned at the side of switched reluctance machines 1-2 and retarder 1-4, perhaps can be positioned at the both sides of switched reluctance machines 1-2 and retarder 1-4.For example, Fig. 1 is the implementation of the lifting amplitude-change mechanism of a kind of hoisting crane of providing of present embodiment, and it adopts 2 drgs, and wherein 1 drg is positioned at a side of switched reluctance machines, and 1 drg is positioned at the side of retarder 1-4; In addition, can also 2 drgs be laid respectively at the one or both sides of switched reluctance machines, perhaps can also 2 drgs be laid respectively at a side or the both sides of retarder, can realize present embodiment equally.In practical application, can the position of drg rationally be set according to the requirement of braking effect.In practical application, can adopt L225A type switched reluctance machines, hoisting crane is with the hard flank of tooth retarder of QY3D315-80 type, YWZ
9-300/E50 type drg.
Referring to Fig. 2, the operating unit of the utility model embodiment hoisting crane comprises drg 2-1, switched reluctance machines 2-2, coupler 2-3, retarder 2-4 and wheel 2-6.Switched reluctance machines 2-2 is through coupler 2-3 connection reducer 2-4, and retarder 2-4 connects wheel 2-6, and wheel 2-6 is fixed on the axletree bearing 2-5.Drg 2-1 adopts the high speed shaft braking; Choose kind and the quantity of drg 2-1 according to the requirement of lock torque; The kind of drg 2-1 can but to be not limited to be magnet stopper, hydraulic push-rod brake, external contracting drum brake or plate disc brake; Its quantity can be 1,2 or a plurality of, and drg 2-1 can be positioned at a side or the both sides of retarder 2-4, perhaps can be positioned at the one or both sides of switched reluctance machines 2-2.For example, Fig. 2 is the implementation of the operating unit of a kind of hoisting crane of providing of present embodiment, and it adopts 1 drg, and this drg is positioned at a side of switched reluctance machines; In addition, the side that this drg can also be positioned at retarder can realize present embodiment equally.In practical application, can the position of drg rationally be set according to the requirement of braking effect.
Referring to Fig. 3, the swing type mechanism of the utility model embodiment hoisting crane comprises drg 3-1, switched reluctance machines 3-2, coupler 3-3, retarder 3-4 and rotary motion mechanism 3-6.Switched reluctance machines 3-2 is through coupler 3-3 connection reducer 3-4, and retarder 3-4 connects rotary motion mechanism 3-6, and rotary motion mechanism 3-6 is fixed in the rotary drive shaft bearing 3-5 support.Drg 3-1 adopts the high speed shaft braking; Choose kind and the quantity of drg 3-1 according to the requirement of lock torque; The kind of drg 3-1 can but to be not limited to be magnet stopper, hydraulic push-rod brake, external contracting drum brake or plate disc brake; Its quantity can be one, two or more, and drg 3-1 can be positioned at the one or both sides of retarder 3-4, perhaps can be positioned at the one or both sides of switched reluctance machines 3-2.For example, Fig. 3 is the implementation of the swing type mechanism of a kind of hoisting crane of providing of present embodiment, and it adopts 1 drg, and this drg is positioned at a side of switched reluctance machines; In addition, the side that this drg can also be positioned at retarder can realize present embodiment equally.In practical application, can the position of drg rationally be set according to the requirement of braking effect.
In order to satisfy the job requirement of hoisting crane under the special operation condition; The factory building that for example uses hoisting crane is under the responsive especially situation of hoisting crane height, weight; Or the work system of hoisting crane is lower, and work does not more frequently require under the situation of minimizing to the upkeep operation of hoisting crane, or under the control positioning accuracy request condition with higher; Need to adopt the direct coupled mode of switched reluctance machines to realize lifting amplitude-change, operation and the revolution of hoisting crane, specific as follows:
Referring to Fig. 4, the lifting mechanism of the utility model embodiment hoisting crane and luffing mechanism comprise switched reluctance machines 4-1, drg 4-3 and reel 4-4.Switched reluctance machines 4-1 directly is connected with reel 4-4, and reel 4-4 is fixed in the drum shaft bearing 4-2 support.The low speed braking is adopted in braking; Choose kind and the quantity of drg 4-3 according to the requirement of lock torque; The kind of drg 4-3 can but to be not limited to be magnet stopper, hydraulic push-rod brake, external contracting drum brake or plate disc brake; Its quantity can be 1,2 or a plurality of, and drg 4-3 can be positioned at a side or the both sides of reel 4-4.For example; Fig. 4 is the implementation of the lifting amplitude-change mechanism of a kind of hoisting crane under the special operation condition that provides of present embodiment, and it adopts 4 drgs, and wherein 2 drgs are positioned at a side of reel; 2 drgs are positioned at the opposite side of reel, utilize the reel ends flange as brake disc.In practical application, can the position of drg rationally be set according to the requirement of braking effect.
Referring to Fig. 5, the operating unit of the utility model embodiment hoisting crane comprises switched reluctance machines 5-1, drg 5-2 and wheel 5-4.Switched reluctance machines 5-1 directly is connected with wheel 5-4, and wheel 5-4 is fixed in the axletree bearing 5-3 support.The low speed braking is adopted in braking; Choose kind and the quantity of drg 5-2 according to the requirement of lock torque; The kind of drg 5-2 can but to be not limited to be magnet stopper, hydraulic push-rod brake, external contracting drum brake or plate disc brake; Its quantity can be 1,2 or a plurality of, and drg 5-2 can be positioned at the both sides of switched reluctance machines 5-1, perhaps can be positioned at the both sides of wheel 5-4.For example, Fig. 5 is the implementation of the operating unit of a kind of hoisting crane under the special operation condition that provides of present embodiment, and it adopts 2 drgs, and 2 drgs are positioned at the both sides of wheel; In addition, 2 drgs can also be positioned at the both sides of switched reluctance machines, can realize present embodiment equally.In practical application, can the position of drg rationally be set according to the requirement of braking effect.
Referring to Fig. 6, the swing type mechanism of the utility model embodiment hoisting crane comprises switched reluctance machines 6-1, drg 6-2 and rotary motion mechanism 6-4.Switched reluctance machines 6-1 directly is connected with rotary motion mechanism 6-4, and rotary motion mechanism 6-4 is fixed on the rotary drive shaft bearing 6-3.The low speed braking is adopted in braking; Choose kind and the quantity of drg 6-2 according to the requirement of lock torque; The kind of drg 6-2 can but to be not limited to be magnet stopper, hydraulic push-rod brake, external contracting drum brake or plate disc brake; Its quantity can be 1,2 or a plurality of, and drg 6-2 can be positioned at the one or both sides of switched reluctance machines 6-1, perhaps can be positioned at a side or the both sides of rotary motion mechanism 6-4; Perhaps can be positioned at the side of switched reluctance machines 6-1 and rotary motion mechanism 6-4, perhaps can be positioned at the both sides of switched reluctance machines 6-1 and rotary motion mechanism 6-4.For example, Fig. 6 is the implementation of the swing type mechanism of a kind of hoisting crane under the special operation condition that provides of present embodiment, and it adopts 2 drgs, and wherein 1 drg is positioned at a side of switched reluctance machines, and 1 drg is positioned at a side of rotary motion mechanism; In addition, 2 drgs can also be positioned at the one or both sides of switched reluctance machines, perhaps can also be positioned at a side or the both sides of rotary motion mechanism, can realize present embodiment equally.In the practical application, can the position of drg rationally be set according to the requirement of braking effect.
The hoisting crane of the utility model embodiment adopts the propulsion source of switched reluctance machines as lifting amplitude-change mechanism, operating unit and the swing type mechanism of hoisting crane, and amplitude modulation mode speed control is adopted in electrical control.Switched reluctance machines is used for lifting amplitude-change mechanism, operating unit and the swing type mechanism glancing impact of hoisting crane, can adopt the electric power generation braking, realizes that the zero-speed braking combines with service braking, helps improving the operating mode of drg, improves service life.
The switched reluctance machines of the utility model embodiment can be used for the driving of lifting amplitude-change mechanism, operating unit and the swing type mechanism of crane in bridge type, transfer crane, semi-goliath crane, high pedestal jib crane, half high pedestal jib crane, tower crane, handling bridge, portal crane, deck crane, car hosit, steamer hoisting crane, crawler crane, locomotive crane, floating crane or elevator.
The hoisting crane of the utility model embodiment adopts the mechanism principle of switched reluctance machines; Utilize that it is simple in structure, efficient is high, cost is low, no-load current is little, speed-regulating range width and characteristics such as energy-conservation; Make switched reluctance machines directly or indirectly drive lifting amplitude-change mechanism, operating unit and the swing type mechanism of hoisting crane, realized each mechanism of hoisting crane hoist or descend, operation, luffing and revolute function.
The hoisting crane that the employing switched reluctance machines of the utility model embodiment drives can increase substantially the energy service efficiency of hoisting crane, reduces power consumption; The hoisting crane of the utility model through adopting switched reluctance machines to drive, make each of hoisting crane form that mechanism structure is simple, volume is little, in light weight, especially lifting mechanism simple in structure, wearing and tearing are low, improved the service life and the reliability of hoisting crane.Simultaneously, the switched reluctance machines output torque is directly proportional with received current and the control that can make hoisting crane to the characteristics of output speed full cut-off ring control accurate and flexible more.
The technical scheme of the utility model embodiment is subsidized by the national science and technology supporting plan.Project name is " green manufacturing gordian technique and equipment " (item number: 2001BAF11B00).Project name is called " universal crane in bridge type light-weight design technology and application " (project number: 2001BAF11B02).
Above-described specific embodiment; Purpose, technical scheme and beneficial effect to the utility model have carried out further explain, it should be understood that the above is merely the specific embodiment of the utility model; Be not limited to the utility model; All within the spirit and principle of the utility model, any modification of being made, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.
Claims (9)
1. a hoisting crane that adopts switched reluctance machines to drive is characterized in that said hoisting crane comprises lifting amplitude-change mechanism, operating unit and swing type mechanism;
Said lifting amplitude-change mechanism comprises first switched reluctance machines and reel, and said first switched reluctance machines is connected with reel; Said operating unit comprises second switch reluctance motor and wheel, and said second switch reluctance motor is connected with wheel; Said swing type mechanism comprises the 3rd switched reluctance machines and rotary motion mechanism, and said the 3rd switched reluctance machines is connected with rotary motion mechanism.
2. the hoisting crane that employing switched reluctance machines as claimed in claim 1 drives is characterized in that, said lifting amplitude-change mechanism also comprises first coupler, first retarder and first drg; Said first switched reluctance machines connects said first retarder through said first coupler, and said first retarder connects said reel; Said first drg is positioned at a side or the both sides of said first retarder; Perhaps be positioned at the one or both sides of said first switched reluctance machines; Perhaps be positioned at a side of said first switched reluctance machines and first retarder, perhaps be positioned at the both sides of said first switched reluctance machines and first retarder.
3. the hoisting crane that employing switched reluctance machines as claimed in claim 1 drives is characterized in that, said lifting amplitude-change mechanism also comprises first drg; Said first drg is positioned at a side or the both sides of said reel.
4. the hoisting crane that employing switched reluctance machines as claimed in claim 1 drives is characterized in that said operating unit also comprises second coupler, second retarder and second drg; Said second switch reluctance motor connects said second retarder through said second coupler, and said second retarder connects said wheel; Said second drg is positioned at a side or the both sides of said second retarder, perhaps is positioned at the one or both sides of said second switch reluctance motor.
5. the hoisting crane that employing switched reluctance machines as claimed in claim 1 drives is characterized in that said operating unit also comprises second drg, and said second drg is positioned at the both sides of said second switch reluctance motor, perhaps the both sides of said wheel.
6. the hoisting crane that employing switched reluctance machines as claimed in claim 1 drives is characterized in that said swing type mechanism also comprises the 3rd coupler, the 3rd retarder and the 3rd drg; Said the 3rd switched reluctance machines connects said the 3rd retarder through said the 3rd coupler, and said the 3rd retarder connects said rotary motion mechanism; Said the 3rd drg is positioned at the one or both sides of said the 3rd retarder, perhaps is positioned at the one or both sides of said the 3rd switched reluctance machines.
7. the hoisting crane that employing switched reluctance machines as claimed in claim 1 drives is characterized in that said swing type mechanism also comprises the 3rd drg; Said the 3rd drg is positioned at the one or both sides of said the 3rd switched reluctance machines; Perhaps be positioned at the one or both sides of said rotary motion mechanism; Perhaps be positioned at a side of said the 3rd switched reluctance machines and rotary motion mechanism, perhaps be positioned at the both sides of said the 3rd switched reluctance machines and rotary motion mechanism.
8. the hoisting crane that drives like arbitrary described employing switched reluctance machines among the claim 2-7 is characterized in that said drg is magnet stopper, hydraulic push-rod brake, external contracting drum brake or plate disc brake.
9. the hoisting crane that drives like arbitrary described employing switched reluctance machines among the claim 2-7 is characterized in that the quantity of said drg is at least one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204002506U CN202322034U (en) | 2011-10-19 | 2011-10-19 | Crane driven by switched reluctance motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011204002506U CN202322034U (en) | 2011-10-19 | 2011-10-19 | Crane driven by switched reluctance motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202322034U true CN202322034U (en) | 2012-07-11 |
Family
ID=46434024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011204002506U Expired - Lifetime CN202322034U (en) | 2011-10-19 | 2011-10-19 | Crane driven by switched reluctance motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202322034U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104796049A (en) * | 2015-04-27 | 2015-07-22 | 湖南海润电气有限公司 | Cable drum driven by switched reluctance motor speed regulating system |
| CN105398964A (en) * | 2014-08-12 | 2016-03-16 | (株)大山Inotec | Apparatus for detecting hoist operating state |
-
2011
- 2011-10-19 CN CN2011204002506U patent/CN202322034U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105398964A (en) * | 2014-08-12 | 2016-03-16 | (株)大山Inotec | Apparatus for detecting hoist operating state |
| CN104796049A (en) * | 2015-04-27 | 2015-07-22 | 湖南海润电气有限公司 | Cable drum driven by switched reluctance motor speed regulating system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202322034U (en) | Crane driven by switched reluctance motor | |
| US20180236878A1 (en) | Electrically driven machine with reverse power storage | |
| CN203333192U (en) | Multifunctional port tire crane | |
| CN201214609Y (en) | Non-gearing crane | |
| CN103318775A (en) | Multipurpose port tire crane | |
| CN201560057U (en) | Double-hoist trolley used for crane | |
| CN202449769U (en) | Superlift device for liftable self-propelled crawler and crane | |
| CN202687771U (en) | Rotating hook device | |
| CN101575072B (en) | Gearless driving crane | |
| CN102730576A (en) | Energy saving fixed type crane | |
| CN202558518U (en) | Mechanical-hydraulic combined winding device | |
| CN202687813U (en) | Energy-saving fixed crane | |
| CN204847876U (en) | Novel no reduction gear hoist | |
| CN101750223A (en) | Tower crane testing stand | |
| CN201560058U (en) | Permanent magnet synchronous motor directly driven crane | |
| CN100448770C (en) | Quayside container crane double hoist system | |
| CN201882828U (en) | Crane provided with split rotary supporting device | |
| CN203271146U (en) | Movable type cantilever crane equipment and concrete conveying equipment for concrete pump | |
| CN104590993A (en) | Travelling mechanism of cart | |
| CN201560079U (en) | Permanent magnet synchronous electric block | |
| CN201882838U (en) | Embedded electric hoisting mechanism of crane | |
| CN103708347A (en) | Double-beam walking trolley | |
| CN201201873Y (en) | Novel drum lifting mechanism | |
| CN201545645U (en) | Multi-motor driven steel wire rope hoisting mechanism | |
| CN204823760U (en) | Monkey running gear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100007 Lama Temple street, Dongcheng District, Dongcheng District, Beijing Patentee after: Beijing lifting and conveying machinery design and Research Institute Co., Ltd. Address before: 100007 Lama Temple street, Dongcheng District, Dongcheng District, Beijing Patentee before: Beijing Materials Handling Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120711 |