CN201347323Y - Through-girder structure for large-tonnage grab bucket - Google Patents
Through-girder structure for large-tonnage grab bucket Download PDFInfo
- Publication number
- CN201347323Y CN201347323Y CNU2009200378503U CN200920037850U CN201347323Y CN 201347323 Y CN201347323 Y CN 201347323Y CN U2009200378503 U CNU2009200378503 U CN U2009200378503U CN 200920037850 U CN200920037850 U CN 200920037850U CN 201347323 Y CN201347323 Y CN 201347323Y
- Authority
- CN
- China
- Prior art keywords
- grab bucket
- grab
- bucket
- shaft
- balance shaft
- 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 - Fee Related
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Abstract
The utility model relates to a through-girder structure for a large-tonnage grab bucket. According to the technical scheme provided by the utility model, grab-bucket lower-pulley seats are arranged at intervals from the left to the right on the crossbeam of the grab bucket, a transverse shaft hole is formed on the grab-bucket lower-pulley seat; a balanced shaft is in rotational connection with the interior of the shaft hole; two ends of the balanced shaft are exposed outside the grab-bucket lower-pulley seat; a balanced block is fixed in the balances shaft at the outer end of the grab-bucket lower-pulley seat; a plurality of grab-bucket pulleys are in rotational connection with the balanced shaft; a loading bearing is mounted in the shaft hole of the grab-bucket lower pulley seat; and the balanced shaft is in rotational connection with the interior of the loading bearing. After being mounted for the application, the through-girder structure has the advantages of wear resistance, little possibility of deformation, and long service life.
Description
Technical field
The utility model relates to a kind of large-tonnage grab bucket through beam structure.
Background technology
The outturn of the ship unloaders in domestic each ore terminal, big harbour concentrates on 2500T/H mostly to 3000T/H at present, and the long strut grab bucket of ship unloaders adapted is between 50～62T.What the balance shaft rotary part structure of grab bucket through beam all adopted is the steel bushing form, as easy as rolling off a log wearing and tearing, distortion.This problem long-term existence, and have a strong impact on the use of grab bucket.
In the former structure of large-tonnage (more than 45 tons) grab bucket through beam between balance shaft and the pulley base hole employing slip steel bushing be connected, because in use, the switching stage of grab bucket is bigger to the ram ratio of steel bushing, so as easy as rolling off a log damage of steel bushing, it mainly is the cover body deformability, and then causing the steel structure distortion, wearing and tearing make the shortening in service life of whole through beam.
In the use of grabbing bucket, bucket body switching moment sheave shaft is bigger to the ram ratio of steel bushing, thus because steel bushing damages easily, mainly be the cover body deformability, and then cause the steel structure distortion, wearing and tearing make the shortening in service life of whole through beam.Generally use about one to about two months, this situation will occur in grab bucket.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of large-tonnage grab bucket through beam structure of wear-resistant, not yielding, long service life is provided.
The technical scheme that provides according to the utility model, on the grab bucket crossbeam between left and right every grab bucket downslide wheel seat is set, on grab bucket downslide wheel seat, offer horizontal axis hole, in axis hole, be rotatably connected to balance shaft, the balance shaft two ends are exposed to outside the grab bucket downslide wheel seat, on the balance shaft of grab bucket downslide wheel seat outer end, be fixed with balance block, on described balance shaft, be rotatably connected to some grab bucket pulleys, in the axis hole of grab bucket downslide wheel seat loading bearing is installed, described balance shaft is rotatably connected in the mounting hole of loading bearing.
Described loading bearing is a self-aligning roller bearing.Offer handle hole at balance block away from the end of balance shaft.
After the utility model is installed and used, have advantages such as wear-resistant, not yielding and long service life.
Description of drawings
Fig. 1 is an integral structure scheme drawing of the present utility model.
Fig. 2 is the A-A cutaway view of Fig. 1.
The specific embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: on grab bucket crossbeam 1 between left and right every grab bucket downslide wheel seat 2 is set, on grab bucket downslide wheel seat 2, offer horizontal axis hole 7, in axis hole 7, be rotatably connected to balance shaft 5, balance shaft 5 two ends are exposed to outside the grab bucket downslide wheel seat 2, on the balance shaft 5 of grab bucket downslide wheel seat 2 outer ends, be fixed with balance block 6, on described balance shaft 5, be rotatably connected to some grab bucket pulleys 3, in the axis hole 7 of grab bucket downslide wheel seat 2 loading bearing 4 is installed, described balance shaft 5 is rotatably connected in the mounting hole of loading bearing 4.
Described loading bearing 4 is a self-aligning roller bearing.Offer handle hole 8 at balance block 6 away from the end of balance shaft 5.
Loading bearing 4 has been selected self-aligning roller bearing, and this bearing load carrying capacity is strong, shock resistance and have the automatic aligning function, can make the stressed balance that reaches by adjusting radial and axial play under the uneven situation of load, reduces the impact to structure.And tilting bearing can bear bigger impact, can play a protective role to the structure of grab bucket downslide wheel seat 2, has solved steel bushing and structure wear problem.
In the grab bucket working process, grasp the moment of material, the tension of grab bucket steel rope, the balance block 6 of pulling equalizing bar 5 both sides promotes through beam, and then closed bucket body, the grab bucket material.And the moment of grab bucket steel rope pulling balance block 6 is bigger to the structural impact of grab bucket downslide wheel seat 2, and balance shaft 5 can guarantee that by the structure that loading bearing 4 is rotationally connected with on the grab bucket downslide wheel seat 2 indirectly structure is not impaired, prolongs the grab bucket period of service.
Claims (3)
1, a kind of large-tonnage grab bucket through beam, be included on the grab bucket crossbeam (1) between left and right every the grab bucket downslide wheel seat (2) that is provided with, on grab bucket downslide wheel seat (2), offer horizontal axis hole (7), in axis hole (7), be rotatably connected to balance shaft (5), balance shaft (5) two ends are exposed to outside the grab bucket downslide wheel seat (2), on the balance shaft (5) of grab bucket downslide wheel seat (2) outer end, be fixed with balance block (6), on described balance shaft (5), be rotatably connected to some grab bucket pulleys (3), it is characterized in that: in the axis hole (7) of grab bucket downslide wheel seat (2) loading bearing (4) is installed, described balance shaft (5) is rotatably connected in the mounting hole of loading bearing (4).
2, large-tonnage grab bucket through beam as claimed in claim 1, it is characterized in that: described loading bearing (4) is a self-aligning roller bearing.
3, large-tonnage as claimed in claim 1 grab bucket through beam is characterized in that: offer handle hole (8) at balance block (6) away from the end of balance shaft (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200378503U CN201347323Y (en) | 2009-01-23 | 2009-01-23 | Through-girder structure for large-tonnage grab bucket |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009200378503U CN201347323Y (en) | 2009-01-23 | 2009-01-23 | Through-girder structure for large-tonnage grab bucket |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201347323Y true CN201347323Y (en) | 2009-11-18 |
Family
ID=41366797
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009200378503U Expired - Fee Related CN201347323Y (en) | 2009-01-23 | 2009-01-23 | Through-girder structure for large-tonnage grab bucket |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201347323Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534019A (en) * | 2014-12-31 | 2015-04-22 | 无锡市新华起重工具有限公司 | Grab bucket balance weight expanding sleeve type fixing structure |
-
2009
- 2009-01-23 CN CNU2009200378503U patent/CN201347323Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104534019A (en) * | 2014-12-31 | 2015-04-22 | 无锡市新华起重工具有限公司 | Grab bucket balance weight expanding sleeve type fixing structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091118 Termination date: 20150123 |
|
| EXPY | Termination of patent right or utility model |