CN202466654U - Grab bucket opening and closing pulley block - Google Patents
Grab bucket opening and closing pulley block Download PDFInfo
- Publication number
- CN202466654U CN202466654U CN2012200492159U CN201220049215U CN202466654U CN 202466654 U CN202466654 U CN 202466654U CN 2012200492159 U CN2012200492159 U CN 2012200492159U CN 201220049215 U CN201220049215 U CN 201220049215U CN 202466654 U CN202466654 U CN 202466654U
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- CN
- China
- Prior art keywords
- pulley
- pulley block
- shaft sleeve
- axle sleeve
- plain thrust
- 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 discloses a grab bucket opening and closing pulley block, and belongs to supporting facilities of excavators. The pulley block comprises a core shaft, four pulleys, a shaft sleeve, a steel wire rope arm and a locking nut. The pulley block is characterized in that the core shaft is not provided with an oil groove; an anti-attrition shaft sleeve is arranged between the core shaft and the shaft sleeve; a plain thrust bearing is arranged between the shaft sleeve and each pulley; each plain thrust bearing is provided with a slag discharge groove; each pulley is provided with a slag discharge groove; the slag discharge grooves in the plain thrust bearings are communicated with and correspond to the slag discharge grooves in the matched pulleys; and an anti-attrition shaft sleeve and a compensation clearance are sequentially arranged between dustproof glands of the pulleys at two ends and the steel wire rope arm. Compared with the conventional structure, the pulley block with the structure has the advantages of simplicity, reasonability, reliability, long service life, low running cost, pollution prevention, self lubricating, corrosion resistance, free maintenance and low maintenance cost, and is easy to manufacture and machine and convenient to install and use.
Description
Technical field
The utility model belongs to the excavator ancillary facility, is specifically related to a kind of grab bucket and opens and closes assembly pulley, and described excavator is applicable to underwater effect.
Background technology
Fig. 1 is the structure chart that existing grab bucket opens and closes assembly pulley.It comprises 11,4 pulleys of mandrel, axle sleeve 9, is provided with rolling bearing 6 between each pulley and the axle sleeve 9, and mandrel 11 is provided with oil groove 10, is provided with spacer 4 between adjacent two pulleys, and the two ends of mandrel are provided with steel wire cable arm 2 and lock through locking nut 1.
Many crane grabs work in high temperature or even the mordant water.Under the washing and corrosion of water, the lubricating grease that grab bucket opens and closes in the assembly pulley rolling bearing runs off very soon.Not only cause the pollution of water, and rolling bearing damages very easily, maintenance is difficulty very, has both increased a large amount of human and material resources costs of overhaul, influences ordinary production again.
Summary of the invention
In order to overcome fragile under water, the difficult maintenance of grab bucket, deficiency that maintenance cost is big, the utility model provides a kind of long service life, does not pollute, and is not non-maintaining, need not to lubricate, corrosion-resistant, and simple structure, the grab bucket that cost is low open and close assembly pulley.
Realize the technical scheme of the utility model: the utility model comprises mandrel, 4 pulleys, axle sleeve, steel wire cable arm, locking nut; It is characterized in that: do not establish oil groove on the mandrel; Be provided with the anti-attrition axle sleeve between mandrel and the axle sleeve; Be provided with plain thrust bearing between axle sleeve and the pulley, each plain thrust bearing is provided with ash pit, and each pulley is provided with ash pit; Ash pit on the plain thrust bearing communicate with ash pit on the supporting pulley and the position corresponding, be provided with anti-attrition axle sleeve and compensate for clearance successively between the dustproof gland of two head sheaves and the steel wire cable arm.
All adopting between described each relative motion part of switching assembly pulley device corrosion-resistantly has the engineering plastics of self-lubricating property spaced apart as sliding bearing, has both prevented that corrosion was integral, and easy access guarantees motion again flexibly.
Described corrosion-resistantly have the engineering plastics sliding bearing of self-lubricating property to utilize water as sliding agent, and the change water damage is water conservancy.Owing to do not need grease lubrication, so whole device need not be provided with oil duct.Simplify the structure, reduce difficulty of processing, the protection water body does not receive secondary pollution.
It is easy to manufacture to the utlity model has simple structure, reliable operation easy to use, Maintenance free, advantages such as life-span length; Do not need grease lubrication, reduce use cost, utilize water as sliding agent, the change water damage is water conservancy, and the protection water body does not receive secondary pollution; Simplify the structure simultaneously, reduce difficulty of processing and required precision.
Description of drawings
Fig. 1 is the structure chart that existing grab bucket opens and closes assembly pulley.
Fig. 2 is the structure chart of the utility model embodiment.
Among the figure, 1, locking nut, 2, the steel wire cable arm, 3, pulley, 4, spacer; 5, dustproof gland, 6, rolling bearing, 7, piston ring, 8, the oil ring dottle pin, 9, axle sleeve; 10, oil groove, 11, mandrel, 12, plain thrust bearing, 13, ash pit, 14, axle sleeve; 15, slow bull ring, 16, the compensation seam, 1,7, the anti-attrition axle sleeve, 18, mandrel.
The specific embodiment
Shown in Figure 2; Present embodiment comprises 18,4 pulleys of mandrel, axle sleeve 14, steel wire cable arm 2, locking nut 1; It is characterized in that: do not establish oil groove on the mandrel 18, be provided with anti-attrition axle sleeve 17 between mandrel 18 and the axle sleeve 14, be provided with plain thrust bearing 12 between axle sleeve 14 and the pulley; Be equipped with ash pit 13 on each plain thrust bearing 12; Be equipped with ash pit on each pulley, the ash pit 13 on the plain thrust bearing 12 communicate with ash pit on the supporting pulley and the position corresponding, be provided with anti-attrition axle sleeve 15 and compensate for clearance 16 between the dustproof gland 5 of two head sheaves and the steel wire cable arm 2 successively.
Engineering plastics anti-attrition axle sleeve 17 corrosion-resistant, self-lubricating is installed between mandrel 18 and the axle sleeve 14, guarantees to rotate flexibly between the two, prevent because the corrosion of water extremely is integral the two rust;
Each pulley 3 is equipped with, and engineering plastics corrosion-resistant, self-lubricating make up plain thrust bearing 12, and ash pit 13 is left at plain thrust bearing 12 middle parts, utilize pulley 3 original piston ring grooves to hold and get into the inner a small amount of fines of bearing, protection work plane; In the outside, assembly pulley two ends a slow bull ring 15 is housed respectively, slow bull ring 15 is determined whether to rotate by both sides moment of friction difference, slows down the wearing and tearing of sliding bearing thrust surface in order to increase bearing area; For gentle plain thrust bearing 12 suctions of compensation water cause change in size, respectively leave compensation seam 16 in the outside, assembly pulley two ends.
Described axle sleeve 14 adopts floating type installation; Two groups open and close steel cable terminal Suo Gu on two ends steel ropes arm 2; Hollow shaft sleeve 14 can be around mandrel 18 swings; Remedy two groups carry open and close steel cable when installing with work in the error in length that produces when twining disorderly " button ", the control equilibrium of forces guarantees that two groups of switching steel cables are stressed identical all the time.
Engineering plastics anti-attrition axle sleeve 17 corrosion-resistant, self-lubricating is installed between described mandrel 18 and the hollow shaft sleeve 14; Guarantee to rotate between the two flexibly; Prevent because the corrosion of water extremely is integral the two rust; Cause and to dismantle, avoid the two become rusty the after death mandrel 18 and the generation wearing and tearing between the ear plate base hole of grabbing bucket simultaneously.
Described corrosion-resistantly have the engineering plastics sliding bearing of self-lubricating property to utilize water as sliding agent, and the change water damage is water conservancy.Do not need grease lubrication, reduce use cost, the protection water body does not receive secondary pollution.Simplify the structure simultaneously, reduce difficulty of processing and required precision.
Claims (1)
1. a grab bucket opens and closes assembly pulley; Comprise mandrel, 4 pulleys, axle sleeve, steel wire cable arm, locking nut; It is characterized in that: do not establish oil groove on the mandrel, be provided with the anti-attrition axle sleeve between mandrel and the axle sleeve, be provided with plain thrust bearing between axle sleeve and the pulley; Each plain thrust bearing is provided with ash pit; Each pulley is provided with ash pit, the ash pit on the plain thrust bearing communicate with ash pit on the supporting pulley and the position corresponding, be provided with anti-attrition axle sleeve and compensate for clearance successively between the dustproof gland of two head sheaves and the steel wire cable arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200492159U CN202466654U (en) | 2012-02-16 | 2012-02-16 | Grab bucket opening and closing pulley block |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200492159U CN202466654U (en) | 2012-02-16 | 2012-02-16 | Grab bucket opening and closing pulley block |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202466654U true CN202466654U (en) | 2012-10-03 |
Family
ID=46914822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200492159U Expired - Fee Related CN202466654U (en) | 2012-02-16 | 2012-02-16 | Grab bucket opening and closing pulley block |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202466654U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106586871A (en) * | 2017-01-11 | 2017-04-26 | 唐山首钢京唐西山焦化有限责任公司 | Method for replacing movable pulley block of coke dry quenching lifting machine |
| CN107842054A (en) * | 2017-12-11 | 2018-03-27 | 苏州海霸设备制造有限公司 | Dredger grab bucket deck beam |
-
2012
- 2012-02-16 CN CN2012200492159U patent/CN202466654U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106586871A (en) * | 2017-01-11 | 2017-04-26 | 唐山首钢京唐西山焦化有限责任公司 | Method for replacing movable pulley block of coke dry quenching lifting machine |
| CN107842054A (en) * | 2017-12-11 | 2018-03-27 | 苏州海霸设备制造有限公司 | Dredger grab bucket deck beam |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121003 Termination date: 20180216 |