CN104084930B - A kind of crane rotation supports more changing device and using method thereof - Google Patents
A kind of crane rotation supports more changing device and using method thereof Download PDFInfo
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- CN104084930B CN104084930B CN201410303669.8A CN201410303669A CN104084930B CN 104084930 B CN104084930 B CN 104084930B CN 201410303669 A CN201410303669 A CN 201410303669A CN 104084930 B CN104084930 B CN 104084930B
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- transmission nut
- stud
- pivoting support
- nut
- jacking
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- 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
Abstract
A kind of crane rotation supports more changing device and using method thereof, more changing device to comprise structure identical and distribute along crane pilum assembly (3) circumference and be in the device I(11 in same level), device II(12) and device III(13), this structure all comprises top hold-down nut (5), jacking stud (6), lead transmission nut I(9), lead transmission nut II(10) and hold-down support (7); By turning guiding transmission nut I(9) and guiding transmission nut II(10) realize jacking and the down maneuver of rotating platform of crane assembly (1), thus by the release of pivoting support (4) level or push; Greatly save cost.Using method can realize Turntable Assemblies (1) jacking and decline, thus realizes the replacing of pivoting support (4); Ensure that the security reliability of pivoting support (4) replacement operation.
Description
Technical field
The present invention relates to a kind of attaching/detaching apparatus, relate to a kind of crane rotation in particular 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, the demand of market to crane is growing; Particularly ocean engineering field is fast-developing, and the application of extra large work crane is increasingly extensive.Pivoting support is that crane realizes the pivotal vitals of complete machine, is also the installation foundation of complete machine, within the crane military service phase, because crane job is heavy or operating mode severe, often there will be the phenomenon that pivoting support damages and needs are changed.
Because pivoting support is positioned at the bottom of crane, its repair and replacement are quite difficult.The crane rotation supporting dismounting and change of current operation on the sea adopts large-scale crane barge usually, takes the installing component on pivoting support top apart handling one by one and walks, and then dismantle pivoting support and handling, thus complete the dismounting and change of pivoting support.But this kind of method needs the manpower and materials of at substantial, and 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, for problems such as the manpower and materials of existing crane rotation supporting dismounting and change at substantial, maintenance cycle are longer, 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 distributes along crane pilum assembly circumference and is in same level, device I, device II and device III is respectively θ 1 along pilum assembly center circumference distribution angle, θ 2 and θ 3, described θ 1 > θ 3, θ 2 > θ 3, distance between device I and device II is L1, 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 stud, guiding transmission nut I, guiding transmission nut II and hold-down support, described top hold-down nut is fixed on rotating platform of crane component 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 stud is double end Length discrepancy stud, upper end stud and the top hold-down nut of jacking stud are threaded connection and are fixed by bearing pin, the lower end stud of jacking stud penetrates in pilot hole, described guiding transmission nut I and guiding transmission nut II surrounding are processed with pin-and-hole respectively, guiding transmission nut I and guiding transmission nut II lays respectively at the upper and lower of gripper shoe, and guiding transmission nut I is connected by screw thread with the lower end stud of jacking stud respectively with guiding transmission nut II.
Described θ 1=θ 2, described L1=L2.
Crane rotation supports a using method for more changing device, comprises the following steps:
Step one, is first positioned over lay-down position by the arm support component of crane, and stops crane job, is then removed by the outer inner ring construction bolt of pivoting support;
Step 2, top hold-down nut is fixed on bottom Turntable Assemblies, hold-down support is fixedly connected with the bearing on pilum assembly and make the pilot hole in gripper shoe and top hold-down nut corresponding, guiding transmission nut I is screwed in the lower end stud of jacking stud, then the lower end stud of jacking stud is penetrated in pilot hole, make the upper end stud of jacking stud and top hold-down nut be threaded connection and be fixed by bearing pin again, finally guiding transmission nut II is screwed in the lower end stud of jacking stud;
Step 3, unscrews downward certain distance by guiding transmission nut II, and the transmission nut II that leads in this process occurs being separated with the pilot hole lower surface in gripper shoe;
Step 4, turn guiding transmission nut I, by turning the screw-driven that guiding transmission nut I produces, jacking stud is made to produce the action of supporting jacking Turntable Assemblies jacking, and then make Turntable Assemblies depart from the upper installed surface of pivoting support gradually, and the transmission nut I that ensures 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 Assemblies 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 in guiding transmission nut I and gripper shoe is fitted tightly;
Step 6, namely completes the dismantlement work of pivoting support by pivoting support pull-out;
Step 7, after pivoting support maintain and replace, first pivoting support is pushed during installation in the gap of Turntable Assemblies and pilum assembly, then unscrew guiding transmission nut II and make its segment distance of creeping downwards, turn guiding transmission nut I again, 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, pass through screw-driven, and then make jacking stud produce the action pulling Turntable Assemblies to decline, until make Turntable Assemblies drop to the upper installed surface of pivoting support gradually, the Internal and external cycle bolt of pivoting support is finally installed, then complete the installment work of pivoting support.
If when the gap in step 5 when the pilot hole lower surface in gripper shoe has contacted with guiding transmission nut II between Turntable Assemblies and pivoting support does not reach 40mm ~ 80mm, then repeat step 3, step 4, until the gap between Turntable Assemblies and pivoting support reaches 40mm ~ 80mm.
Compared with prior art, the invention has the beneficial effects as follows:
1, structure is simple, and 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 distribute along crane pilum assembly circumference and are in same level, device I, device II are identical with device III structure, all comprise top hold-down nut, jacking stud, guiding transmission nut I, guiding transmission nut II and hold-down support, realize jacking and the down maneuver of rotating platform of crane assembly by turning guiding transmission nut I and guiding transmission nut II, thus pivoting support level is released or pushes; Achieve not by the restriction of crane job occasion, change when not break-down crane parts and pivoting support is installed, avoid and adopt large-scale hanging device and a large amount of manpower mate-assist, greatly saved cost.
2, in the present invention, using method specifies the step realizing pivoting support and change, ensure that the security reliability of pivoting support replacement operation, solve the supporting of existing crane rotation, particularly prop up the problem of bearing method for maintaining, service clearance and safety operation operation and limiting at the crane rotation of marine environment operation.
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 Assemblies 1, arm support component 2, pilum assembly 3, pivoting support 4, top hold-down nut 5, jacking stud 6, hold-down support 7, bearing 8, guiding transmission nut I9, guiding transmission nut II10, device I11, device II12, device III13, gripper shoe 14.
Detailed description of the invention
Illustrate that the present invention is described in further detail with detailed description of the invention below in conjunction with accompanying drawing.
See 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 distribute along pilum assembly 3 circumference and are in same level.Device I11, device II12 and device III13 are respectively θ 1, θ 2 and θ 3, described θ 1 > θ 3, θ 2 > θ 3 along pilum assembly 3 center circumference distribution angle; 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 pilum assembly 3 center circumference distribution angle.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, generally should meet L1-D >=100mm, to ensure that pivoting support 4 can have enough gaps to during release by level A from Fig. 2.Preferably, described θ 1=θ 2, described L1=L2, can make pivoting support 4 can level from Fig. 2 B to release or push.
See Fig. 1, Fig. 3, described device I11, device II12 are identical with device III13 structure, all comprise top hold-down nut 5, jacking stud 6, guiding transmission nut I9, guiding transmission nut II10 and hold-down support 7.Described top hold-down nut 5 is weldingly fixed on bottom rotating platform of crane assembly 1; 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 position in corresponding top is provided with pilot hole.Described jacking stud 6 is double end Length discrepancy stud, and upper end stud and the top hold-down nut 5 of jacking stud 6 are threaded connection and are fixed by bearing pin, easy disassembly; The lower end stud of jacking stud 6 penetrates in pilot hole, and the lower end stud length of jacking stud 6 should be able to meet Turntable Assemblies 1 jacking 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 pin-and-hole respectively, guiding transmission nut I9 and guiding transmission nut II10 lays respectively at the upper and lower of gripper shoe 14, and guiding transmission nut I9 is connected by screw thread with the lower end stud of jacking stud 6 respectively with guiding transmission nut II10.During use, first turn guiding transmission nut II10, away from former bonding position downward one end distance; Then turn guiding transmission nut I9 the ensureing transmission nut I9 that leads in this process to fit tightly with the pilot hole upper surface in gripper shoe 14 and be not separated, therefore by turning the screw-driven that guiding transmission nut I9 produces continuously, make jacking stud 6 support Turntable Assemblies 1 jacking or pull Turntable Assemblies 1 to decline, thus realizing jacking and the down maneuver of Turntable Assemblies 1.In work, the direction of rotary steering transmission nut I9 is contrary during Turntable Assemblies 1 jacking and when Turntable Assemblies 1 declines, if turn rotary steering transmission nut I9 clockwise to realize Turntable Assemblies 1 jacking action, then need to turn rotary steering transmission nut I9 counterclockwise to realize Turntable Assemblies 1 down maneuver.Meanwhile, in Turntable Assemblies 1 course of action, because jacking stud 6 and top hold-down nut 5 are fixed by bearing pin, so jacking stud 6 does not produce spinning movement all the time.
See Fig. 1-3, a kind of crane rotation supports the using method of more changing device, can realize Turntable Assemblies 1 jacking and decline, thus realizes the replacing of pivoting support 4; Specifically comprise the following steps:
Step one, change the upper installed surface that Turntable Assemblies 1 jacking first must be departed from pivoting support 4 by pivoting support 4, therefore first the arm support component 2 of crane is positioned over lay-down position, and stops crane job, then the outer inner ring construction bolt of pivoting support 4 is removed.
Step 2, being weldingly fixed on by top hold-down nut 5 is fixed on bottom Turntable Assemblies 1, hold-down support 7 is fixedly connected with the bearing 8 on pilum assembly 3 and make the pilot hole in gripper shoe 14 and top hold-down nut 5 corresponding, make pilot hole be positioned at immediately below top hold-down nut 5; Guiding transmission nut I9 is screwed in the lower end stud of jacking stud 6, then the lower end stud of jacking stud 6 is penetrated in pilot hole, make the upper end stud of jacking stud 6 and top hold-down nut 5 be threaded connection and be fixed by bearing pin again, finally guiding transmission nut II10 is screwed in the lower end stud of jacking stud 6.
Step 3, unscrews downward certain distance by guiding transmission nut II10, and the transmission nut II10 that leads in this process occurs being separated with the pilot hole lower surface in gripper shoe 14.
Step 4, turn guiding transmission nut I9, by turning the screw-driven that guiding transmission nut I9 produces, jacking stud 6 is made to produce the action of supporting Turntable Assemblies 1 jacking, and then make Turntable Assemblies 1 depart from the upper installed surface of pivoting support 4 gradually, and the transmission nut I9 that ensures 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, the gap between Turntable Assemblies 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 in guiding transmission nut I9 and gripper shoe 14 is fitted tightly namely be in locking state, to ensure processing safety.If when when the pilot hole lower surface in gripper shoe 14 has contacted with guiding transmission nut II10, gap between Turntable Assemblies 1 and pivoting support 4 does not reach 40mm ~ 80mm, then repeat step 3, step 4, until the gap between Turntable Assemblies 1 and pivoting support 4 reaches 40mm ~ 80mm.
Step 6, the simple and easy jack up unit on the hoist crane carried by crane or ship by pivoting support 4 from the A shown in Fig. 2 to or B to pull-out, namely complete the dismantlement work of pivoting support 4.
Step 7, when after pivoting support 4 maintain and replace, first the simple and easy jack up unit on the hoist crane carried by crane during installation or ship by pivoting support 4 from the A shown in Fig. 2 to or B to the gap pushing Turntable Assemblies 1 and pilum assembly 3, then unscrew guiding transmission nut II10 and make its segment distance of creeping downwards, turn guiding transmission nut I9 again, 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, pass through screw-driven, and then make jacking stud 6 produce the action pulling Turntable Assemblies 1 to decline, until make Turntable Assemblies 1 drop to the upper installed surface of pivoting support 4 gradually, the Internal and external cycle bolt of pivoting support 4 is finally installed, then complete the installment work of pivoting support 4.After pivoting support 4 installs, jacking stud 6, guiding transmission nut I9 and guiding transmission nut II10 are removed.
The transmission nut I9 and guiding transmission nut II10 that leads in the present invention operates can by special spanner instrument, the pin-and-hole that also can be inserted on guiding transmission nut I9 and guiding transmission nut II10 by homemade simple and easy cross like spanner is operated, to overcome the restriction of execute-in-place condition.Mount and dismount device I11, device II12 and device III13 in same crane and generally need 3 operating personnel relative synchronization operation simultaneously; And in operation, crane is not absolute rest, can rock or other reasons generation action to a certain degree because of wind, wave, hull, and with guiding transmission nut II10, top hold-down nut 5, guiding transmission nut I9 ensure that jacking stud 6 is connected with hold-down support 7 all the time, thus ensure that 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) distribute along crane pilum assembly (3) circumference and be in same level, device I(11), device II(12) and device III(13) be respectively θ 1 along pilum assembly (3) center circumference distribution angle, θ 2 and θ 3, described θ 1 > θ 3, θ 2 > θ 3, device I(11) and device II(12) between distance be L1, device I(11) and device 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) with device III(13) structure is identical, all comprise top hold-down nut (5), jacking stud (6), guiding transmission nut I(9), guiding transmission nut II(10) 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), upper hold-down nut (5) position, corresponding top of gripper shoe (14) of hold-down support (7) is provided with pilot hole, described jacking stud (6) is double end Length discrepancy stud, upper end stud and the top hold-down nut (5) of jacking stud (6) are threaded connection and are fixed by bearing pin, the lower end stud of jacking stud (6) penetrates in pilot hole, described guiding transmission nut I(9) and guiding transmission nut II(10) surrounding is processed with pin-and-hole respectively, 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) and the transmission nut II(10 that leads) be connected by screw thread with the lower end stud of jacking stud (6) respectively.
2. a kind of crane rotation according to claim 1 supports more changing device, it is characterized in that: described θ 1=θ 2, described L1=L2.
3. a kind of crane rotation according to claim 1 supports the using method of more changing device, it is characterized in that, comprises the following steps:
Step one, is first positioned over lay-down position by the arm support component (2) of crane, and stops crane job, is then removed by the outer inner ring construction bolt of pivoting support (4);
Step 2, top hold-down nut (5) is fixed on Turntable Assemblies (1) bottom, hold-down support (7) is fixedly connected with the bearing (8) on pilum assembly (3) and make the pilot hole in gripper shoe (14) and top hold-down nut (5) corresponding, to be led transmission nut I(9) screw in the lower end stud of jacking stud (6), then the lower end stud of jacking stud (6) is penetrated in pilot hole, the upper end stud of jacking stud (6) and top hold-down nut (5) is made to be threaded connection and to be fixed by bearing pin again, finally will lead transmission nut II(10) screw in the lower end stud of jacking stud (6),
Step 3, will lead transmission nut II(10) unscrew downward certain distance, lead in this process transmission nut II(10) occur being 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) screw-driven that produces, jacking stud (6) is made to produce the action of supporting jacking Turntable Assemblies (1) jacking, and then make Turntable Assemblies (1) depart from the upper installed surface of pivoting support (4) gradually, and ensure to lead in this process transmission nut I(9) be 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 Assemblies (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 guiding transmission nut I(9) fit tightly with the pilot hole upper surface in gripper shoe (14);
Step 6, namely completes the dismantlement work of pivoting support (4) by pivoting support (4) pull-out;
Step 7, after pivoting support (4) maintain and replace, first pivoting support (4) is pushed in the gap of Turntable Assemblies (1) and pilum assembly (3) during installation, then guiding transmission nut II(10 is unscrewed) make its segment distance of creeping downwards, turn guiding transmission nut I(9 again), and the transmission nut I(9 of now leading) rotation direction and the transmission nut I(9 that leads in step 4) rotation direction contrary, pass through screw-driven, and then make jacking stud (6) produce the action pulling Turntable Assemblies (1) to decline, until make Turntable Assemblies (1) drop to the upper installed surface of pivoting support (4) gradually, the Internal and external cycle bolt of pivoting support (4) is finally installed, then complete the installment work of pivoting support (4).
4. a kind of crane rotation according to claim 3 supports the using method of more changing device, it is characterized in that: if in step 5 when the pilot hole lower surface in gripper shoe (14) with guiding transmission nut II(10) contact and gap between Turntable Assemblies (1) and pivoting support (4) does not reach 40mm ~ 80mm time, then repeat step 3, step 4, until the gap between Turntable Assemblies (1) and pivoting support (4) reaches 40mm ~ 80mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410303669.8A CN104084930B (en) | 2014-06-30 | 2014-06-30 | A kind of crane rotation supports more changing device and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410303669.8A CN104084930B (en) | 2014-06-30 | 2014-06-30 | A kind of crane rotation supports more changing device and using method thereof |
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| CN104084930A CN104084930A (en) | 2014-10-08 |
| CN104084930B true CN104084930B (en) | 2016-03-16 |
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| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8863966B2 (en) * | 2011-03-21 | 2014-10-21 | Dynaking Crane, Llc | Kingpost crane apparatus and method |
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2014
- 2014-06-30 CN CN201410303669.8A patent/CN104084930B/en active Active
Patent Citations (5)
| 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 |
| 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 |
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|---|---|
| CN104084930A (en) | 2014-10-08 |
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