CN201746256U - Eccentric wear resistance center swivel joint for wheel crane - Google Patents
Eccentric wear resistance center swivel joint for wheel crane Download PDFInfo
- Publication number
- CN201746256U CN201746256U CN2010205169704U CN201020516970U CN201746256U CN 201746256 U CN201746256 U CN 201746256U CN 2010205169704 U CN2010205169704 U CN 2010205169704U CN 201020516970 U CN201020516970 U CN 201020516970U CN 201746256 U CN201746256 U CN 201746256U
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- China
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- joint
- support rings
- sleeve
- fixed body
- center swivel
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- Expired - Lifetime
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Abstract
The utility model provides an eccentric wear resistance center swivel joint for a wheel crane, comprising a fixed body, a sleeve, a rotating seal, and a rotary brush, the upper and lower two ends of the center swivel joint hydraulic coupling part are respectively provided with a support ring with an opening in the middle, the gap between the support ring and the sleeve is smaller than the gap between the fixed body and the sleeve. The joint is advantageous in that the joint is provided with simple structure, effectively improving performance of eccentric wear resistance of center swivel joint; self-lubricating is performed upon the support rings, keeping good rotating performance of support rings; the joint is also provided with the advantage of low pollution, the sealing ring is installed at the external side of the support rings, effectively isolating impurities such as dust, water, etc. at the outside, preventing generation of abnormal phenomenon such as creeping and over-tightness; since the support rings are not a closed annular structure, and are like resilient gaskets with an opening in the middle, the support rings can be conveniently installed on the fixed body; the cost is low, compared with common center swivel joints, only two installation grooves are needed to be added, and two support rings are added, the cost increase is very small.
Description
Technical field
The utility model relates to a kind of centre revolving joint device of wheel crane.
Background technology
During wheel crane is got on the bus working process at present, need be delivered to the hydraulic oil of getting off, electric signal by centre revolving joint and get on the bus; Also needing the hydraulic oil of will get on the bus and electric signal to be delivered to by centre revolving joint simultaneously gets off.At present, the centre revolving joint main composition partly is fixed body, sleeve, rotary seal, revolution brush, when the center swivel coupling is subjected to eccentric wear power, eccentric wear power is more serious to the wearing and tearing of rotary seal, in case the centre revolving joint oil leakage phenomenon will appear in the rotary seal wearing and tearing, has shortened the service life of wheel crane centre revolving joint.
Summary of the invention
The purpose of this utility model provides a kind of wheel crane centre revolving joint of anti-eccentric wear, and this joint can actv. reduces the situation of the early stage leakage of oil that centre revolving joint causes because of eccentric wear, thus the service life of improving centre revolving joint.
The purpose of this utility model is achieved in that this joint comprises fixed body, sleeve, rotary seal, revolution brush, two ends respectively are installed by a middle support ring of being with opening up and down at centre revolving joint hydraulic pressure connecting bridge, the gap between support ring and the sleeve is less than the gap between fixed body and the sleeve.
Because the utility model adopts said structure, and is 1. simple in structure, effectively raise the anti-performance of friction partially of centre revolving joint; 2. lubricate, support ring is installed in before the last sealing together, and centre revolving joint internal hydraulic pressure oil can carry out self-lubricating to support ring, makes it keep good verticity; 3. pollute lowly, seal ring is installed in the support ring outside, with impurity effective isolation such as dust, water outside, has prevented to creep, strange phenomena such as tension takes place; 4. convenient processing and assembling only need be installed in support ring top just passable at fixed body relevant position installation and processing groove then; Because support ring is not an osed top cyclic structure, but as spring washer, there is an opening centre, can be installed in very easily on the fixed body; 5. cost is low, relatively with common centre revolving joint, only needs two mounting grooves of multi-processing, increase by two support rings just can, the cost increase is seldom.
Description of drawings
Fig. 1 is the constructional drawing of the utility model embodiment.
Fig. 2 is the constructional drawing of support ring among Fig. 1.
1 revolution brush, 2 support rings among the figure, 3 rotary seals, 4., fixed body, 5 sleeves.
The specific embodiment
Embodiment: this joint comprises fixed body 4, sleeve 5, rotary seal 3, revolution brush 1, two ends respectively are installed by a middle support ring 2 of being with opening up and down at centre revolving joint hydraulic pressure connecting bridge, the gap between support ring 2 and the sleeve 5 is less than the gap between fixed body 4 and the sleeve 5.When the center swivel coupling was subjected to eccentric wear power, friction force bore by two support rings 2, therefore can reduce the wearing and tearing to rotary seal 3.
In addition, support ring 2 is not an osed top cyclic structure, but as spring washer, there is an opening centre, can be installed in very easily on the fixed body 4.The contour structures of support ring 2 as shown in Figure 2.During support ring 2 assemblings, only need support ring 2 be launched a little with hand, it is clipped on the fixed body 4, assembling can be finished, and takes time and effort all seldom, can not have influence on the single-piece efficiency of assembling.
Claims (1)
1. the wheel crane centre revolving joint of an anti-eccentric wear, this joint comprises fixed body, sleeve, rotary seal, revolution brush, it is characterized in that two ends respectively being installed by a middle support ring of being with opening up and down at centre revolving joint hydraulic pressure connecting bridge, the gap between support ring and the sleeve is less than the gap between fixed body and the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205169704U CN201746256U (en) | 2010-08-30 | 2010-08-30 | Eccentric wear resistance center swivel joint for wheel crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205169704U CN201746256U (en) | 2010-08-30 | 2010-08-30 | Eccentric wear resistance center swivel joint for wheel crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201746256U true CN201746256U (en) | 2011-02-16 |
Family
ID=43580933
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205169704U Expired - Lifetime CN201746256U (en) | 2010-08-30 | 2010-08-30 | Eccentric wear resistance center swivel joint for wheel crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201746256U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992205A (en) * | 2011-09-15 | 2013-03-27 | 埃普斯隆起重机有限公司 | Swivel joint assembly |
| CN104948862A (en) * | 2015-06-19 | 2015-09-30 | 泸州邦立液压有限责任公司 | Electric swivel joint |
-
2010
- 2010-08-30 CN CN2010205169704U patent/CN201746256U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102992205A (en) * | 2011-09-15 | 2013-03-27 | 埃普斯隆起重机有限公司 | Swivel joint assembly |
| CN104948862A (en) * | 2015-06-19 | 2015-09-30 | 泸州邦立液压有限责任公司 | Electric swivel joint |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110216 |