CN102022598A - Hydraulic central rotary joint - Google Patents
Hydraulic central rotary joint Download PDFInfo
- Publication number
- CN102022598A CN102022598A CN2009101824135A CN200910182413A CN102022598A CN 102022598 A CN102022598 A CN 102022598A CN 2009101824135 A CN2009101824135 A CN 2009101824135A CN 200910182413 A CN200910182413 A CN 200910182413A CN 102022598 A CN102022598 A CN 102022598A
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- Prior art keywords
- turning axle
- rotation
- solid
- rotary
- rear end
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Abstract
The invention relates to a hydraulic central rotary joint mainly used in the whole hydraulic system of machinery, such as large-tonnage tower cranes, and the like. The hydraulic central rotary joint comprises a rotary body (3) and a rotary shaft (1), wherein the small head end of the rotary shaft (1) is axially inserted in the rotary body (3) from the rear end of the rotary body (3), the axis end of the small head end of the rotary shaft (1) is fixed by a baffle plate, the rear end of the rotary body (3) is fixed by an end cover (5), the large head end of the rotary shaft (1) extends out of the rear end of the rotary body (3), the outer margin of the large head end of the rotary shaft (1) close to the rear end of the rotary body (3) is fixedly connected with a positioning plate (2), the rotary shaft (1) is internally and axially provided with eight main oilway holes, the oil inlets of the eight main oilway holes are all arranged at the outer margin of the large head end of the rotary shaft (1); and the rotary body (3) is radially provided with eight main oilway holes which correspond to the eight main oilway holes on the rotary shaft (1). The rotary part and the fixed part can be made to relatively rotate at 360 degrees, the pipelines are not interfered, the upper oilway and the lower oilway are smooth, and the oilways are not connected in series.
Description
(1) technical field
The present invention relates to the central swivel coupling of a kind of hydraulic pressure.Be mainly used in the whole hydraulic system of machineries such as large-tonnage full hydraulic excavator, hoist, grader, tower crane.It is the link that connects the hydraulic pipe line of standing part and rotating part in the whole hydraulic system.
(2) background technique
Hydraulic shovel, loop wheel machine etc., two-part are need be rotating about it, just there is the oil circuit connectivity problem of rotating part and standing part in this.Hydraulic pressure central authorities swivel coupling is exactly to be used for connecting the hydraulic pipe line of fixing in the whole hydraulic system with rotating part.Central authorities' swivel coupling is made up of solid of rotation, turning axle and lid etc.During use, the revolution lower bolster of solid of rotation and hydraulic shovel, hoist machinery is fixed, and the turning axle upper mounting plate supports with the revolution on the revolution upper mounting plate and is connected.Hydralic hose and electric wire are installed on respectively on each hydraulic fluid port and circuit of solid of rotation and turning axle.The upper mounting plate of hydraulic machinery drives the turning axle rotation.
Before the present invention makes, can not relative rotation motion between the solid of rotation of present hydraulic pressure central authorities swivel coupling and the turning axle 360 °, cause pipeline and circuit to interfere, upper and lower not smooth, each oil circuit action is connected.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide a kind of rotating part and standing part of making relative to rotate the hydraulic pressure central authorities swivel coupling that 360 ° of pipelines do not interfere, upper and lower oil circuit is unimpeded, each oil circuit action is not connected.
The object of the present invention is achieved like this: the central swivel coupling of a kind of hydraulic pressure, comprise solid of rotation and turning axle, the little head end of described turning axle axially inserts in the solid of rotation from the solid of rotation rear end, and the turning axle microcephaly holds axle head to fix with baffle plate, the solid of rotation rear end is fixed with end cap, described turning axle stub end stretches out outside the solid of rotation rear end, and the turning axle stub end is fixedly connected with positioning plate near solid of rotation rear end outer rim; Axially offer eight working connection holes in the described turning axle, the filler opening in described eight working connection holes all is arranged on the outer rim of turning axle stub end, corresponding to eight working connection holes on the turning axle, it is corresponding one by one with eight working connection holes on the turning axle radially to have eight main hydraulic fluid ports on the described solid of rotation.Article eight, working connection is fuel-displaced through solid of rotation and turning axle.
The invention has the beneficial effects as follows:
The present invention can connect the hydraulic circuit of standing part and rotating part in the whole hydraulic system, makes rotating part can rotate 360 ° relatively with standing part, and pipeline does not interfere, and upper and lower oil circuit is unimpeded, and each oil circuit action is not connected.And this central swivel coupling can provide the oil circuit of eight passages, not only can provide oil circuit for running motor and soil-shifting oil cylinder, on this basis can also be for support oil cylinder provide oil circuit, and make the excavator can be in complex operating environment construction more.
This product is mainly used in 200T level full hydraulic excavator; Upper and lower two major parts of loop wheel machine.
(4) description of drawings
Fig. 1 is the Facad structure schematic representation of the central swivel coupling of hydraulic pressure of the present invention.
Fig. 2 is the rear view of Fig. 1.
Fig. 3 is the A-A cut-away view of Fig. 1.
Fig. 4 is the worm's eye view of Fig. 1.
Reference character among the figure:
Turning axle 1, positioning plate 2, solid of rotation 3, baffle plate 4, end cap 5, screw 6, bolt 7, O shape circle 8, rotary seal 9, wear ring 10, O shape circle 11, dust ring 12, plug 13, O shape circle 14.
(5) embodiment
Referring to Fig. 1～4, the hydraulic pressure central authorities swivel coupling that the present invention relates to, comprise solid of rotation 3 and turning axle 1, described turning axle 1 little head end axially inserts in the solid of rotation 3 from solid of rotation 3 rear ends, and axle head is fixing with baffle plate 3 and screw 6, solid of rotation 3 rear ends end cap 5, bolt 7 and seal ring 8 fixing seals, described turning axle 1 stub end stretches out outside solid of rotation 3 rear ends, and turning axle 1 stub end is fixedly connected with positioning plate 2 near solid of rotation 3 rear end outer rims; Load onto rotary seal 9, wear ring 10, O shape circle 11 and dust ring 12 in the described solid of rotation 3 outer rim annular grooves.
As Fig. 3, axially offer eight working connection holes in the described turning axle 1, the filler opening in described eight working connection holes all is arranged on the outer rim of turning axle 1 stub end, and the working connection nose end head that turning axle 1 stub end is offered is blocked with plug 13, and guarantees sealing with O shape circle 14; Corresponding to eight working connection holes on the turning axle 1, it is corresponding one by one with eight working connection holes on the turning axle 1 radially to have eight main hydraulic fluid ports on the described solid of rotation 3, as the A mouth among Fig. 1, Fig. 2 and Fig. 3, B mouth, C mouth, D mouth, E mouth, F mouth, G mouth and H mouth.
Claims (1)
1. hydraulic pressure central authorities swivel coupling, comprise solid of rotation (3) and turning axle (1), it is characterized in that: the little head end of described turning axle (1) axially inserts in the solid of rotation (3) from solid of rotation (3) rear end, and turning axle (1) microcephaly holds axle head fixing with baffle plate (3), solid of rotation (3) rear end is fixing with end cap (5), described turning axle (1) stub end stretches out outside solid of rotation (3) rear end, and turning axle (1) stub end is fixedly connected with positioning plate (2) near solid of rotation (3) rear end outer rim; Axially offer eight working connection holes in the described turning axle (1), the filler opening in described eight working connection holes all is arranged on the outer rim of turning axle (1) stub end, corresponding to eight working connection holes on the turning axle (1), it is corresponding one by one with eight working connection holes on the turning axle (1) radially to have eight main hydraulic fluid ports on the described solid of rotation (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101824135A CN102022598A (en) | 2009-09-14 | 2009-09-14 | Hydraulic central rotary joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101824135A CN102022598A (en) | 2009-09-14 | 2009-09-14 | Hydraulic central rotary joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102022598A true CN102022598A (en) | 2011-04-20 |
Family
ID=43864220
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101824135A Pending CN102022598A (en) | 2009-09-14 | 2009-09-14 | Hydraulic central rotary joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102022598A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102936905A (en) * | 2012-10-11 | 2013-02-20 | 许世东 | Crushing loading roadway repairing machine for coal mine |
| CN103162032A (en) * | 2011-12-08 | 2013-06-19 | 海德堡印刷机械股份公司 | A rotation joint between two members capable of relatively moving around one axis |
| CN103807588A (en) * | 2012-11-05 | 2014-05-21 | 协易机械工业股份有限公司 | Revolved body oil circuit guiding device |
| CN104088321A (en) * | 2014-07-14 | 2014-10-08 | 甘存南 | Rotary joint connecting device for hydraulic excavator |
| CN115532457A (en) * | 2022-11-02 | 2022-12-30 | 中建八局第二建设有限公司 | Central rotary joint of tower crane spraying system |
-
2009
- 2009-09-14 CN CN2009101824135A patent/CN102022598A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103162032A (en) * | 2011-12-08 | 2013-06-19 | 海德堡印刷机械股份公司 | A rotation joint between two members capable of relatively moving around one axis |
| CN103162032B (en) * | 2011-12-08 | 2017-05-17 | 海德堡印刷机械股份公司 | A rotation joint between two members capable of relatively moving around one axis |
| CN102936905A (en) * | 2012-10-11 | 2013-02-20 | 许世东 | Crushing loading roadway repairing machine for coal mine |
| CN102936905B (en) * | 2012-10-11 | 2016-05-11 | 泰州市兴东煤矿机械制造有限公司 | A kind of colliery crushing and loading roadway repairer |
| CN103807588A (en) * | 2012-11-05 | 2014-05-21 | 协易机械工业股份有限公司 | Revolved body oil circuit guiding device |
| CN104088321A (en) * | 2014-07-14 | 2014-10-08 | 甘存南 | Rotary joint connecting device for hydraulic excavator |
| CN115532457A (en) * | 2022-11-02 | 2022-12-30 | 中建八局第二建设有限公司 | Central rotary joint of tower crane spraying system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20110420 |