CN204076181U - A kind of crane rotation supports more changing device - Google Patents
A kind of crane rotation supports more changing device Download PDFInfo
- Publication number
- CN204076181U CN204076181U CN201420354993.8U CN201420354993U CN204076181U CN 204076181 U CN204076181 U CN 204076181U CN 201420354993 U CN201420354993 U CN 201420354993U CN 204076181 U CN204076181 U CN 204076181U
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- China
- Prior art keywords
- transmission nut
- stud
- nut
- hold
- crane
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Abstract
A kind of crane rotation supports more changing device, 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 the transmission nut II(10 that leads) realize jacking and the down maneuver of rotating platform of crane assembly (1), thus pivoting support (4) level is released or pushes away, thus realize pivoting support (4) more, greatly save cost.
Description
Technical field
The utility model relates to a kind of attaching/detaching apparatus, relates to a kind of crane rotation in particular and supports more changing device, belongs to 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 purpose of this utility model is, for problems such as the manpower and materials of existing crane rotation supporting dismounting and change at substantial, maintenance cycle are longer, to provide a kind of crane rotation to support more changing device.
For achieving the above object, technical solution of the present utility model 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,
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.
Compared with prior art, the beneficial effects of the utility model are:
Structure is simple, and safe and reliable, workable, cost is low.In the utility model, 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.
Accompanying drawing explanation
Fig. 1 is pivoting support disassembly system fitting arrangement in the utility model.
Fig. 2 is pivoting support disassembly system mounting arrangements top view in the utility model.
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 below in conjunction with accompanying drawing and with detailed description of the invention, the utility model to be described in further detail.
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.
Above content is in conjunction with concrete preferred embodiment further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace, said structure all should be considered as belonging to protection domain of the present utility model.
Claims (2)
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420354993.8U CN204076181U (en) | 2014-06-30 | 2014-06-30 | A kind of crane rotation supports more changing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420354993.8U CN204076181U (en) | 2014-06-30 | 2014-06-30 | A kind of crane rotation supports more changing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204076181U true CN204076181U (en) | 2015-01-07 |
Family
ID=52168943
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420354993.8U Withdrawn - After Issue CN204076181U (en) | 2014-06-30 | 2014-06-30 | A kind of crane rotation supports more changing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204076181U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084930A (en) * | 2014-06-30 | 2014-10-08 | 武汉船用机械有限责任公司 | Crane slewing bearing replacement device and using method thereof |
-
2014
- 2014-06-30 CN CN201420354993.8U patent/CN204076181U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104084930A (en) * | 2014-06-30 | 2014-10-08 | 武汉船用机械有限责任公司 | Crane slewing bearing replacement device and using method thereof |
| CN104084930B (en) * | 2014-06-30 | 2016-03-16 | 武汉船用机械有限责任公司 | A kind of crane rotation supports more changing device and using method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150107 Effective date of abandoning: 20160316 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |