CN104084930A - Crane slewing bearing replacement device and using method thereof - Google Patents
Crane slewing bearing replacement device and using method thereof Download PDFInfo
- Publication number
- CN104084930A CN104084930A CN201410303669.8A CN201410303669A CN104084930A CN 104084930 A CN104084930 A CN 104084930A CN 201410303669 A CN201410303669 A CN 201410303669A CN 104084930 A CN104084930 A CN 104084930A
- Authority
- CN
- China
- Prior art keywords
- transmission nut
- screw bolt
- double
- nut
- jacking
- 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.)
- Granted
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a crane slewing bearing replacement device and a using method thereof. The replacement device comprises a device I (11), a device II (12) and a device III (13), wherein the device I (11), the device II (12) and the device III (13) are of the same structure and are distributed in the circumferential direction of a crane foundation pillar assembly (3) and located on the same horizontal plane. The device I (11), the device II (12) and the device III (13) respectively and structurally comprise a top fixing nut (5), a jacking double-screw bolt (6), a guiding driving nut I (9), a guiding driving nut II (10) and a fixing support (7), wherein the jacking and descending actions of a crane rotary table assembly (1) are achieved by screwing the guiding driving nut I (9) and the guiding driving nut II (10), and therefore a slewing bearing (4) is horizontally pushed out or pushed in; the cost is greatly saved. According to the using method, jacking and descending of the rotary table assembly (1) can be achieved, and therefore replacement of the slewing bearing (4) is achieved; safety and reliability of the replacement operation of the slewing bearing (4) are ensured.
Description
Technical field
The present invention relates to a kind of attaching/detaching apparatus, relate in particular a kind of crane rotation and support more changing device and using method thereof, belong in extra large work hoisting machinery technical field.
Background technology
Along with the deep development of Chinese national economy, market is growing to the demand of crane; Particularly ocean engineering field is fast-developing, and the application of extra large work crane is increasingly extensive.Pivoting support is that crane is realized the rotating vitals of complete machine, is also the installation basis of complete machine, within the crane military service phase, because crane job is heavy or operating mode is severe, often there will be pivoting support to damage and the phenomenon of needs replacing.
Because pivoting support is positioned at the bottom of crane, its repair and replacement are difficulty quite.The crane rotation supporting dismounting and change of operation on the sea at present adopts large-scale crane barge conventionally, takes one by one the installing component on pivoting support top apart handling and walks, and then dismantle pivoting support handling, thereby complete the dismounting and change of pivoting support.But this kind of method need to expend a large amount of manpower and materials, maintenance cost is high; And maintenance cycle is longer, use occasion is limited, has a strong impact on the production efficiency of crane.
Summary of the invention
The object of the invention is to expend the problems such as a large amount of manpower and materials, maintenance cycle be long for existing crane rotation supporting dismounting and change, provide a kind of crane rotation to support more changing device and using method thereof.
For achieving the above object, technical solution of the present invention is: a kind of crane rotation supports more changing device, comprise device I, device II and device III, described device I, device II and device III are along the circumferential distribution of crane pilum assembly and in same level, and device I, device II and device III are respectively along the circumferential distribution angle in pilum assembly center
1,
2 Hes
3, described
1 >
3,
2 >
3, the distance between device I and device II is L1, and the distance between device I and device III is L2, and L1 is greater than the outer diameter D of pivoting support (4);
Described device I, device II is identical with device III structure, all comprise top hold-down nut, jacking double-screw bolt, guiding transmission nut I, guiding transmission nut II and hold-down support, described top hold-down nut is fixed on rotating platform of crane assembly bottom, described hold-down support is fixedly connected with the bearing on pilum assembly, in the gripper shoe of hold-down support, hold-down nut position, corresponding top is provided with pilot hole, described jacking double-screw bolt is that double end does not wait long threaded rod, upper end double-screw bolt and the top hold-down nut of jacking double-screw bolt are threaded connection and fix by bearing pin, the lower end double-screw bolt of jacking double-screw bolt penetrates in pilot hole, described guiding transmission nut I and guiding transmission nut II surrounding are processed with respectively pin-and-hole, guiding transmission nut I and guiding transmission nut II lay respectively at the upper and lower of gripper shoe, and guiding transmission nut I is connected by screw thread with the lower end double-screw bolt of jacking double-screw bolt respectively with guiding transmission nut II.
Described
1=
2, described L1=L2.
Crane rotation supports a more using method for changing device, comprises the following steps:
Step 1, is first positioned over lay-down position by the arm support component of crane, and stops crane job, then the outer inner ring construction bolt of pivoting support is removed;
Step 2, top hold-down nut is fixed on to turntable assembly bottom, be fixedly connected with and make pilot hole and top hold-down nut in gripper shoe corresponding with the bearing on pilum assembly hold-down support, guiding transmission nut I is screwed in the lower end double-screw bolt of jacking double-screw bolt, then the lower end double-screw bolt of jacking double-screw bolt is penetrated in pilot hole, make again upper end double-screw bolt and the top hold-down nut of jacking double-screw bolt be threaded connection and fix by bearing pin, finally guiding transmission nut II is screwed in the lower end double-screw bolt of jacking double-screw bolt;
Step 3, unscrews downward certain distance by guiding transmission nut II, and the transmission nut II that leads in this process occurs separated with the pilot hole lower surface in gripper shoe;
Step 4, turn guiding transmission nut I, the screw thread transmission producing by turning guiding transmission nut I, make jacking double-screw bolt produce the action of supporting jacking turntable assembly jacking, and then make turntable assembly depart from gradually the upper installed surface of pivoting support, and the transmission nut I that guarantees to lead in this process is not separated with the pilot hole upper surface in gripper shoe;
Step 5, continue to turn guiding transmission nut I, gap between turntable assembly and pivoting support is constantly increased, if gap reaches 40mm～80mm, can stop turning guiding transmission nut I, again guiding transmission nut II is upwards tightened until fit tightly with the pilot hole lower surface in gripper shoe, and the pilot hole upper surface that makes to lead in transmission nut I and gripper shoe fits tightly;
Step 6, pulls out pivoting support the dismantlement work that has completed pivoting support;
Step 7, after pivoting support maintain and replace, during installation, first pivoting support is pushed in the gap of turntable assembly and pilum assembly, then unscrew guiding transmission nut II and make its segment distance of creeping downwards, turn again guiding transmission nut I, and the rotation direction of the transmission nut I that now leads is contrary with the rotation direction of the transmission nut I that leads in step 4, by screw thread transmission, and then make jacking double-screw bolt produce the action that pulls turntable assembly to decline, until make turntable assembly drop to gradually the upper installed surface of pivoting support, the Internal and external cycle bolt of pivoting support is finally installed, completed the installment work of pivoting support.
When the gap if the pilot hole lower surface in step 5 in gripper shoe has contacted with guiding transmission nut II between turntable assembly and pivoting support does not reach 40mm～80mm, repeating step three, step 4, until the gap between turntable assembly and pivoting support reaches 40mm～80mm.
Compared with prior art, the invention has the beneficial effects as follows:
1, simple in structure, safe and reliable, workable, cost is low.In the present invention, more changing device comprises device I, device II and device III, device I, device II and device III are along the circumferential distribution of crane pilum assembly and in same level, device I, device II are identical with device III structure, all comprise top hold-down nut, jacking double-screw bolt, guiding transmission nut I, guiding transmission nut II and hold-down support, by turning guiding transmission nut I, realize jacking and the down maneuver of rotating platform of crane assembly with guiding transmission nut II, thereby pivoting support level is released or pushed; Realize the restriction that is not subject to crane job occasion, the in the situation that of break-down crane parts not, changed pivoting support is installed, avoided adopting large-scale hanging device and a large amount of manpower mate-assist, greatly saved cost.
2, in the present invention, using method has indicated and has realized the step that pivoting support is changed, guaranteed the security reliability of pivoting support replacing operation, solved existing crane rotation supporting, the particularly crane rotation in marine environment operation and propped up the problem of bearing method for maintaining, service clearance and safety operation operation restriction.
Accompanying drawing explanation
Fig. 1 is pivoting support disassembly system fitting arrangement in the present invention.
Fig. 2 is pivoting support disassembly system mounting arrangements top view in the present invention.
Fig. 3 is the partial enlarged drawing of Fig. 1.
In figure, turntable assembly 1, arm support component 2, pilum assembly 3, pivoting support 4, top hold-down nut 5, jacking double-screw bolt 6, hold-down support 7, bearing 8, guiding transmission nut I9, guiding transmission nut II 10, device I11, device II12, device III13, gripper shoe 14.
The specific embodiment
Below in conjunction with accompanying drawing explanation and the specific embodiment, the present invention is described in further detail.
Referring to Fig. 1-2, a kind of crane rotation supports more changing device, comprise device I11, device II12 and device III13, described device I11, device II12 and device III13 are between rotating platform of crane assembly 1 and pilum assembly 3, and device I11, device II12 and device III13 circumferentially distribute and in same level along pilum assembly 3.Device I 11, device II12 and device III13 are respectively along the pilum assembly 3 circumferential distribution angle in center
1,
2 Hes
3, described
1 >
3,
2 >
3; Device I11 herein, device II12 and device III13 are respectively the circumferential distribution angle of device I11 center, device II12 center and device III13 center and the pilum assembly line of centres along the pilum assembly 3 circumferential distribution angle in center.Device I and the distance of device between II are L1, and the distance between device I and device III is L2, and L1 is greater than the outer diameter D of pivoting support 4, generally should meet L1-D >=100mm, with guarantee pivoting support 4 can level from Fig. 2 A have enough gaps when releasing.Preferably, described
1=
2, described L1=L2, can make pivoting support 4 can level from Fig. 2 B to releasing or pushing.
Referring to Fig. 1, Fig. 3, described device I11, device II12 are identical with device III13 structure, all comprise top hold-down nut 5, jacking double-screw bolt 6, guiding transmission nut I9, guiding transmission nut II10 and hold-down support 7.Described top hold-down nut 5 is weldingly fixed on rotating platform of crane assembly 1 bottom; Described hold-down support 7 is welding steel structure, and hold-down support 7 is fixedly connected with the bearing 8 on pilum assembly 3 by multiple row bolt, and in the gripper shoe 14 of hold-down support 7, hold-down nut 5 positions in corresponding top are provided with pilot hole.Described jacking double-screw bolt 6 is that double end does not wait long threaded rod, and the upper end double-screw bolt of jacking double-screw bolt 6 and top hold-down nut 5 are threaded connection and fix by bearing pin, easy disassembly; The lower end double-screw bolt of jacking double-screw bolt 6 penetrates in pilot hole, and the lower end double-screw bolt length of jacking double-screw bolt 6 should be able to meet 1 jacking of turntable assembly and depart from the certain required distance of pivoting support 4, and this distance is generally 40mm～80mm.Described guiding transmission nut I9 and guiding transmission nut II10 surrounding are processed with respectively pin-and-hole, guiding transmission nut I9 and guiding transmission nut II10 lay respectively at the upper and lower of gripper shoe 14, and guiding transmission nut I9 is connected by screw thread with the lower end double-screw bolt of jacking double-screw bolt 6 respectively with guiding transmission nut II10.During use, first turn guiding transmission nut II10, away from downward one end, former laminating position distance; Then turn guiding transmission nut I9 and the transmission nut I9 that guarantees to lead in this process fits tightly not separated with the pilot hole upper surface in gripper shoe 14, therefore the screw thread transmission producing by turning continuously guiding transmission nut I9, make 6 supporting turntable assembly 1 jackings of jacking double-screw bolt or pull turntable assembly 1 to decline, thereby realizing jacking and the down maneuver of turntable assembly 1.In work, the direction of rotary steering transmission nut I9 is contrary during 1 jacking of turntable assembly and when turntable assembly 1 declines, if turn clockwise rotary steering transmission nut I9, realize the 1 jacking action of turntable assembly, need to turn counterclockwise rotary steering transmission nut I9 to realize turntable assembly 1 down maneuver.Meanwhile, in turntable assembly 1 course of action, because jacking double-screw bolt 6 and top hold-down nut 5 are fixed by bearing pin, so jacking double-screw bolt 6 does not produce spinning movement all the time.
Referring to Fig. 1-3, a kind of crane rotation supports the more using method of changing device, can realize 1 jacking of turntable assembly and decline, thereby realize the replacing of pivoting support 4; Specifically comprise the following steps:
Step 1, change pivoting support 4 and must first 1 jacking of turntable assembly be departed to the upper installed surface of pivoting support 4, therefore first the arm support component of crane 2 is positioned over to lay-down position, and stops crane job, then the outer inner ring construction bolt of pivoting support 4 is removed.
Step 2, top hold-down nut 5 is weldingly fixed on and is fixed on turntable assembly 1 bottom, be fixedly connected with and make pilot hole and top hold-down nut 5 in gripper shoe 14 corresponding with the bearing 8 on pilum assembly 3 hold-down support 7, make pilot hole be positioned at top hold-down nut 5 under; Guiding transmission nut I9 is screwed in the lower end double-screw bolt of jacking double-screw bolt 6, then the lower end double-screw bolt of jacking double-screw bolt 6 is penetrated in pilot hole, make again upper end double-screw bolt and the top hold-down nut 5 of jacking double-screw bolt 6 be threaded connection and fix by bearing pin, finally guiding transmission nut II10 is screwed in the lower end double-screw bolt of jacking double-screw bolt 6.
Step 3, unscrews downward certain distance by guiding transmission nut II10, and the transmission nut II10 that leads in this process occurs separated with the pilot hole lower surface in gripper shoe 14.
Step 4, turn guiding transmission nut I9, the screw thread transmission producing by turning guiding transmission nut I9, make jacking double-screw bolt 6 produce the action of supporting turntable assembly 1 jacking, and then make turntable assembly 1 depart from gradually the upper installed surface of pivoting support 4, and the transmission nut I9 that guarantees to lead in this process is not separated with the pilot hole upper surface in gripper shoe 14.
Step 5, continues to turn guiding transmission nut I9, and the gap between turntable assembly 1 and pivoting support 4 is constantly increased, if gap reaches 40mm～80mm, can stop turning guiding transmission nut I9; Again guiding transmission nut II10 is upwards tightened until fit tightly with the pilot hole lower surface in gripper shoe 14, and the pilot hole upper surface leading in transmission nut I9 and gripper shoe 14 is fitted tightly in locking state, to guarantee processing safety.When the gap if the pilot hole lower surface in gripper shoe 14 has contacted with guiding transmission nut II10 between turntable assembly 1 and pivoting support 4 does not reach 40mm～80mm, repeating step three, step 4, until the gap between turntable assembly 1 and pivoting support 4 reaches 40mm～80mm.
Step 6, the simple and easy jack up unit on the hoist crane carrying by crane or ship by pivoting support 4 from the A shown in Fig. 2 to or B to pulling out, completed the dismantlement work of pivoting support 4.
Step 7, after pivoting support 4 maintain and replaces, first the simple and easy jack up unit on the hoist crane carrying by crane during installation or ship by pivoting support 4 from the A shown in Fig. 2 to or B to pushing the gap of turntable assembly 1 and pilum assembly 3, then unscrew guiding transmission nut II10 and make its segment distance of creeping downwards, turn again guiding transmission nut I9, and the rotation direction of the transmission nut I9 that now leads is contrary with the rotation direction of the transmission nut I9 that leads in step 4, by screw thread transmission, and then make jacking double-screw bolt 6 produce the action that pulls turntable assembly 1 to decline, until make turntable assembly 1 drop to gradually the upper installed surface of pivoting support 4, the Internal and external cycle bolt of pivoting support 4 is finally installed, completed the installment work of pivoting support 4.After pivoting support 4 installs, jacking double-screw bolt 6, guiding transmission nut I9 and guiding transmission nut II10 are removed.
The transmission nut I9 that leads in the present invention operates and can pass through special spanner instrument with guiding transmission nut II10, the pin-and-hole that also can insert on guiding transmission nut I9 and guiding transmission nut II10 by homemade simple and easy cross like spanner operates, to overcome the restriction of execute-in-place condition.In same crane, mount and dismount device I11, device II12 and generally need 3 operating personnel relative simultaneously operating simultaneously with device III13; And in operating process, crane is not absolute rest, can rock or other reasons generation action to a certain degree because of wind, wave, hull, and top hold-down nut 5, guiding transmission nut I9 and guiding transmission nut II10 guarantee that jacking double-screw bolt 6 is connected with hold-down support 7 all the time, thereby guaranteed the security of pivoting support 4 Renewal process.
Above content is in conjunction with concrete preferred embodiment further description made for the present invention, can not assert that specific embodiment of the invention is confined to these explanations.For general technical staff of the technical field of the invention, without departing from the inventive concept of the premise, can also make some simple deduction or replace, said structure all should be considered as belonging to protection scope of the present invention.
Claims (4)
1. a crane rotation supports more changing device, it is characterized in that: comprise device I (11), device II(12) and device III(13), described device I(11), device II(12) and device III(13) along crane pilum assembly (3), circumferentially distributes and in same level, device I(11), install II(12) and install III(13) along the circumferential distribution angle in pilum assembly (3) center, be respectively
1,
2 Hes
3, described
1 >
3,
2 >
3, device I(11) and device II(12) between distance be L1, device I (11) and install III(13) between distance be L2, and L1 is greater than the outer diameter D of pivoting support (4);
Described device I(11), device II(12) and install III(13) structure is identical, all comprise top hold-down nut (5), jacking double-screw bolt (6), guiding transmission nut I(9), transmission nut II(10 leads) and hold-down support (7), described top hold-down nut (5) is fixed on rotating platform of crane assembly (1) bottom, described hold-down support (7) is fixedly connected with the bearing (8) on pilum assembly (3), the upper corresponding top hold-down nut (5) of gripper shoe (14) position of hold-down support (7) is provided with pilot hole, described jacking double-screw bolt (6) is that double end does not wait long threaded rod, the upper end double-screw bolt of jacking double-screw bolt (6) and top hold-down nut (5) are threaded connection and fix by bearing pin, the lower end double-screw bolt of jacking double-screw bolt (6) penetrates in pilot hole, described guiding transmission nut I(9) and guiding transmission nut II(10) surrounding is processed with respectively pin-and-hole, guiding transmission nut I(9) and the transmission nut II(10 that leads) lay respectively at the upper and lower of gripper shoe (14), and guiding transmission nut I(9) with guiding transmission nut II(10) be connected by screw thread with the lower end double-screw bolt of jacking double-screw bolt (6) respectively.
2. a kind of crane rotation according to claim 1 supports more changing device, it is characterized in that: described
1=
2, described L1=L2.
3. a kind of crane rotation according to claim 1 supports the more using method of changing device, it is characterized in that, comprises the following steps:
Step 1, is first positioned over lay-down position by the arm support component of crane (2), and stops crane job, then the outer inner ring construction bolt of pivoting support (4) is removed;
Step 2, top hold-down nut (5) is fixed on to turntable assembly (1) bottom, be fixedly connected with and make pilot hole and top hold-down nut (5) in gripper shoe (14) corresponding with the bearing (8) on pilum assembly (3) hold-down support (7), transmission nut I(9 will lead) screw in the lower end double-screw bolt of jacking double-screw bolt (6), then the lower end double-screw bolt of jacking double-screw bolt (6) is penetrated in pilot hole, make again upper end double-screw bolt and the top hold-down nut (5) of jacking double-screw bolt (6) be threaded connection and fix by bearing pin, transmission nut II(10 finally will lead) screw in the lower end double-screw bolt of jacking double-screw bolt (6),
Step 3, transmission nut II(10 will lead) unscrew downward certain distance, transmission nut II(10 leads in this process) occur separated with the pilot hole lower surface in gripper shoe (14);
Step 4, turn guiding transmission nut I(9), by turning guiding transmission nut I(9) the screw thread transmission that produces, make jacking double-screw bolt (6) produce the action of supporting jacking turntable assembly (1) jacking, and then make turntable assembly (1) depart from gradually the upper installed surface of pivoting support (4), and the transmission nut I(9 that guarantees to lead in this process) not separated with the pilot hole upper surface in gripper shoe (14);
Step 5, continue to turn guiding transmission nut I(9), gap between turntable assembly (1) and pivoting support (4) is constantly increased, if gap reaches 40mm～80mm, can stop turning guiding transmission nut I(9), again by the transmission nut II(10 that leads) upwards tighten until fit tightly with the pilot hole lower surface in gripper shoe (14), and make the transmission nut I(9 that leads) fit tightly with the pilot hole upper surface in gripper shoe (14);
Step 6, pulls out pivoting support (4) dismantlement work that has completed pivoting support (3);
Step 7, after pivoting support (4) maintain and replace, during installation, first pivoting support (4) is pushed in the gap of turntable assembly (1) and pilum assembly (3), then unscrew guiding transmission nut II(10) make its segment distance of creeping downwards, turn again guiding transmission nut I(9), and transmission nut I(9 now leads) rotation direction and the transmission nut I(9 that leads in step 4) rotation direction contrary, by screw thread transmission, and then make jacking double-screw bolt (6) produce the action that pulls turntable assembly (1) to decline, until make turntable assembly (1) drop to gradually the upper installed surface of pivoting support (4), the Internal and external cycle bolt of pivoting support (4) is finally installed, completed the installment work of pivoting support (4).
4. a kind of crane rotation according to claim 3 supports the more using method of changing device, it is characterized in that: if in step 5 the pilot hole lower surface in gripper shoe (14) with guiding transmission nut II(10) contact and gap between turntable assembly (1) and pivoting support (4) while not reaching 40mm～80mm, repeating step three, step 4, until the gap between turntable assembly (1) and pivoting support (4) reaches 40mm～80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303669.8A CN104084930B (en) | 2014-06-30 | 2014-06-30 | A kind of crane rotation supports more changing device and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303669.8A CN104084930B (en) | 2014-06-30 | 2014-06-30 | A kind of crane rotation supports more changing device and using method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104084930A true CN104084930A (en) | 2014-10-08 |
| CN104084930B CN104084930B (en) | 2016-03-16 |
Family
ID=51632746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410303669.8A Active CN104084930B (en) | 2014-06-30 | 2014-06-30 | A kind of crane rotation supports more changing device and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104084930B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201281080Y (en) * | 2008-10-23 | 2009-07-29 | 马鞍山方圆回转支承股份有限公司 | Pick-off gear type pivoting support |
| CN202240369U (en) * | 2011-09-08 | 2012-05-30 | 宝鸡石油机械有限责任公司 | Slewing bearing replacement device for crane |
| US20120241404A1 (en) * | 2011-03-21 | 2012-09-27 | Bobeck Mark | Kingpost crane apparatus & method |
| CN102815625A (en) * | 2012-07-31 | 2012-12-12 | 武汉船用机械有限责任公司 | Crane for ocean platform |
| CN203023275U (en) * | 2012-12-28 | 2013-06-26 | 徐州罗特艾德回转支承有限公司 | Pin-type slewing bearing |
| CN204076181U (en) * | 2014-06-30 | 2015-01-07 | 武汉船用机械有限责任公司 | A kind of crane rotation supports more changing device |
-
2014
- 2014-06-30 CN CN201410303669.8A patent/CN104084930B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201281080Y (en) * | 2008-10-23 | 2009-07-29 | 马鞍山方圆回转支承股份有限公司 | Pick-off gear type pivoting support |
| US20120241404A1 (en) * | 2011-03-21 | 2012-09-27 | Bobeck Mark | Kingpost crane apparatus & method |
| CN202240369U (en) * | 2011-09-08 | 2012-05-30 | 宝鸡石油机械有限责任公司 | Slewing bearing replacement device for crane |
| CN102815625A (en) * | 2012-07-31 | 2012-12-12 | 武汉船用机械有限责任公司 | Crane for ocean platform |
| CN203023275U (en) * | 2012-12-28 | 2013-06-26 | 徐州罗特艾德回转支承有限公司 | Pin-type slewing bearing |
| CN204076181U (en) * | 2014-06-30 | 2015-01-07 | 武汉船用机械有限责任公司 | A kind of crane rotation supports more changing device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104084930B (en) | 2016-03-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10054111B2 (en) | Method and device for blade replacement in wind turbines | |
| US9127650B2 (en) | Tower assembly system for wind turbines and method thereof | |
| CN101618506B (en) | Installation tool and installation method for rudderstock hydraulic nut of supertanker | |
| US10934999B2 (en) | Methods for mounting or dismounting wind turbine components of a multirotor wind turbine | |
| US9890022B2 (en) | Method for suspending a rotor blade from a hub of a wind turbine | |
| CN202627547U (en) | Device for installing penetrating piece sleeving pipe of steel containment for nuclear island of nuclear power station | |
| CN108385711A (en) | A kind of anchor cage ring formula basis and its installation method | |
| JP2014167273A (en) | Wind turbine generator | |
| CN203372980U (en) | Detachable top cover hanger applicable to pressurized water reactor | |
| CN202114460U (en) | Seabed hydraulic nut setting tool for rudderstock | |
| CN205669461U (en) | A kind of blower fan tower barrel attachment structure | |
| CN104084930B (en) | A kind of crane rotation supports more changing device and using method thereof | |
| CN204076181U (en) | A kind of crane rotation supports more changing device | |
| CN201432279Y (en) | Tool for installing rudderstock hydraulic nut on supertank | |
| CN102303817B (en) | Screwing-in anchoring device for crane | |
| CN109113938B (en) | Segmented variable-pitch bearing reinforcing flange for wind turbine generator and air installation method of segmented variable-pitch bearing reinforcing flange | |
| CN201505794U (en) | Welding assembly and levelness adjustment device for large thick-walled pipelines | |
| CN103818836A (en) | Crane jib section with adjustable upwards tilted angle, crane jib and crane | |
| CN214329869U (en) | Bracket device for truss support of silo wall | |
| CN108343561B (en) | Goaf site wind turbine generator system deviation correcting device and deviation correcting method thereof | |
| CN101564811B (en) | Blade nut tightening device and use method thereof | |
| CN103434922A (en) | Lifting point of all-rotation shell flange | |
| CN209041031U (en) | A kind of segmented pitch variable bearings reinforcement flange for Wind turbines | |
| CN113562620A (en) | Tool and method for high-altitude installation and in-place of wind wheel of wind turbine generator | |
| CN202872306U (en) | Cable laying disc |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |