CN104913138B - A kind of multichannel small-sized machine center-rotary joint and its operation principle - Google Patents
A kind of multichannel small-sized machine center-rotary joint and its operation principle Download PDFInfo
- Publication number
- CN104913138B CN104913138B CN201510148523.5A CN201510148523A CN104913138B CN 104913138 B CN104913138 B CN 104913138B CN 201510148523 A CN201510148523 A CN 201510148523A CN 104913138 B CN104913138 B CN 104913138B
- Authority
- CN
- China
- Prior art keywords
- gyroaxis
- revolving body
- ring
- oil duct
- dust
- 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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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L27/00—Adjustable joints, Joints allowing movement
- F16L27/08—Adjustable joints, Joints allowing movement allowing adjustment or movement only about the axis of one pipe
- F16L27/087—Joints with radial fluid passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/26—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings
- F16J15/28—Sealings between relatively-moving surfaces with stuffing-boxes for rigid sealing rings with sealing rings made of metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sealing Devices (AREA)
- Component Parts Of Construction Machinery (AREA)
- Joints Allowing Movement (AREA)
- Rolling Contact Bearings (AREA)
Abstract
The invention discloses a kind of multichannel small-sized machine center-rotary joint and its operation principle, gyroaxis is inserted in revolving body, revolving body inwall installs sealing ring and O-ring seal, cover plate is fixed on outside revolving body, cover plate O-ring is installed between cover plate and revolving body, brush is installed between cover plate and gyroaxis, needle bearing is installed between revolving body and gyroaxis, dust ring is fixed on gyroaxis, and the dust blowing lip of dust ring contradicts the end face of revolving body.The present invention by brush carry out engineering machinery get on and off between electric signal transmission.Sliding friction is replaced using needle bearing rolling friction, reduces friction, improves revolution efficiency and center-rotary joint life-span, reduces hydraulic oil pollution, it is ensured that installation axiality, is prevented because bias causes O-ring to damage oil leak.Dust ring has two different dust blowing lips, and metal dust blowing lip is used for the solid for removing firm adhesion, and elasticity stops material dust blowing lip and is used to remove the immature grains of sand, moisture and similar external contaminant.
Description
Technical field
The present invention relates to a kind of swivel coupling, more particularly to a kind of multichannel small-sized machine center-rotary joint and its work
Make principle.
Background technology
Engineering machinery revolving dial is connected transition with walking of getting off using center-rotary joint, so that having a level pressure
The hydraulic oil of power flows between getting on and off, and drives hydraulic motor or cylinder action.In general center-rotary joint is by turning round
Body, gyroaxis, O-ring, sealing ring, back-up ring and end cap composition.In use, according to mounting means respectively by gyroaxis and revolving body
It is fixed on the installing plate to get on and off, sebific duct is connected with corresponding hydraulic fluid port, when being got on and off so as to reach with respect to spinning movement is done, glue
Pipe does not interfere distortion.With the raising of work machine operation performance requirement, center-rotary joint should also possess the transmission of electric signal
Function, and common center-rotary joint is mainly used in liquid transmission, can not meet the requirements such as micro-control.Revolving body is with returning
What is formed between rotating shaft is sliding friction pair, and rotational speed is relatively low, can not form tempered oil film, and fretting wear is more serious, for a long time
Hydraulic oil is polluted using friction particles can be produced, while the bias caused by abrasion can damage O-ring seal and dust ring, occur
Oil leakage fault.Common dust ring can not meet that internal foreign matter is automatically drained out, and the strong dust blowing ability of foreign, make for a long time
Friction particles thing is had after and enters center-rotary joint, the abrasion of contact-enhancing face, service life is returned in reduction.
The content of the invention
In view of this, the present invention proposes a kind of multichannel small-sized machine center-rotary joint and its operation principle, with solution
The swivel coupling fretting wear of certainly above-mentioned prior art is serious, causes to pollute hydraulic oil, while the bias caused by abrasion can damage
, there is the problem of oil leakage fault in bad O-ring seal and dust ring.
To reach above-mentioned purpose, the technical proposal of the invention is realized in this way：
A kind of multichannel small-sized machine center-rotary joint, including revolving body, gyroaxis and cover plate, the gyroaxis lead to
Cross circlip to be removably inserted in the revolving body, the circlip is also arranged with elastic circlip on one side, to prevent
Axial motion occurs when rotated for the gyroaxis, and several sealing rings are installed on the revolving body inwall axial direction, described
One end mounting O-shaped sealing ring of revolving body inwall, the cover plate are fixed on by screw outside the other end of the revolving body, institute
Installation cover plate O-ring between cover plate and the revolving body is stated, wherein,
Brush is installed between the cover plate and the gyroaxis, the electric signal between being got on or off the bus by the brush
Transmit, needle bearing is respectively installed at the both ends of the revolving body and the gyroaxis contact portion, the revolution shaft head with it is described
There is dust ring, the dust ring is fixed on the gyroaxis, and the dust blowing lip of the dust ring contradicts between revolving body end face
The end face of the revolving body.
Above-mentioned multichannel small-sized machine center-rotary joint, wherein, the dust blowing lip includes metal lip and elastic lip, institute
Being arranged on the metal shell of the dust ring for metal lip and the elastic lip tandem is stated, the metal shell is fixed on
On the gyroaxis.
Above-mentioned multichannel small-sized machine center-rotary joint, wherein, the revolving body inwall opens up several sealing rings
Mounting groove and an O-ring seal mounting groove, the sealing ring be installed in the sealing ring mounting groove and with the gyroaxis
Cylindrical in sealing contact, the O-ring seal is installed in the O-ring seal mounting groove.
Above-mentioned multichannel small-sized machine center-rotary joint, wherein, gyroaxis center axial direction opens up annular U
Type oil duct, the first oil duct is opened up between sealing ring described in each two in the revolving body, the gyroaxis corresponds to each oil
Road opening position opens up the second oil duct, and first oil duct and second oil duct communicate, and second oil duct returns through described
The rotating shaft U-shaped oil duct of annular.
Above-mentioned multichannel small-sized machine center-rotary joint, wherein, the revolving body inwall opens up needle bearing installation
Groove, the needle bearing is installed in the needle bearing mounting groove and axiality identical with the gyroaxis holding.
Also include a kind of operation principle of multichannel small-sized machine center-rotary joint, wherein, the operation principle is such as
Under,
Hydraulic oil enters the gyroaxis by the U-shaped oil duct of annular, and according to oil duct by first oil duct and
Second oil duct, high-low pressure oil duct is formed between the revolving body and the gyroaxis；The process of the gyroaxis rotation
In, the brush realizes the electric signal transmission between getting on or off the bus；The revolving body and described time are realized by the needle bearing
Rolling friction between rotating shaft；Caused foreign matter between the revolving body and the gyroaxis is removed by the dust ring.
It is of the invention to be as a result of above-mentioned technology, caused good effect：
(1) present invention by brush carry out engineering machinery get on and off between electric signal transmission, avoid because getting on and off back
Wire harness confusion in journey is turned over, distorts, fracture.
(2) sliding friction is replaced using needle bearing rolling friction between revolving body and gyroaxis of the invention, reduced back
The friction of swivel and gyroaxis, revolution efficiency and center-rotary joint life-span are improved, hydraulic oil pollution is reduced, furthermore, it is possible to protect
Card installation axiality, is prevented because bias causes O-ring to damage oil leak.
(3) dust ring of the invention uses the metal dust circle of single-acting, one thin with two different dust blowing lips
Metal lip and an elastic lip, two dust blowing lips tandem in compact metal shell arrange, and metal dust blowing lip is used to remove
Fall the solid of firm adhesion, elasticity stops material dust blowing lip and is used to remove the immature grains of sand, moisture and similar external contaminant；This
Outside, dust ring is arranged between revolving body and gyroaxis, and its special structure can be automatically drained out revolving body in rotary course
Foreign matter between gyroaxis.
Brief description of the drawings
The accompanying drawing for forming the part of the present invention is used for providing a further understanding of the present invention, schematic reality of the invention
Apply example and its illustrate to be used to explain the present invention, do not form inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 be the present invention multichannel small-sized machine center-rotary joint and its operation principle in swivel coupling structure
Schematic diagram.
Numbering is respectively in accompanying drawing：1 screw, 2 cover plates, 3 cover plate O-rings, 4 brushes, 5 elastic circlips, 6 circlips, 7 is close
Seal ring, 8 revolving bodies, 9 O-ring seals, 10 needle bearings, 11 dust rings, 12 gyroaxises, 13 elastic lips, 14 metal lips, 15
One oil duct, 16 second oil ducts, the 17 U-shaped oil ducts of annular.
Embodiment
The invention will be further described with specific embodiment below in conjunction with the accompanying drawings, but not as limiting to the invention.
Embodiment one
Incorporated by reference to shown in Fig. 1, a kind of multichannel small-sized machine center-rotary joint of the invention, including revolving body 8, return
Rotating shaft 12 and cover plate 2, gyroaxis 12 are removably inserted in revolving body 8 by circlip 6, and circlip 6 also blocks on one side
Provided with elastic circlip 5, axial motion occurs when rotated to prevent non-return rotating shaft 12, if being installed on the inwall axial direction of revolving body 8
Dry sealing ring 7, one end mounting O-shaped sealing ring 9 of the inwall of revolving body 8, cover plate 2 is fixed on the another of revolving body 8 by screw 1
End is outside, and cover plate O-ring 3 is installed between cover plate 2 and revolving body 8, wherein,
Brush 4 is installed between cover plate and gyroaxis 12, the electric signal transmission between being got on or off the bus by brush 4, returned
Needle bearing 10 is respectively installed at the both ends of swivel 8 and the contact portion of gyroaxis 12, and the inwall of revolving body 8 opens up needle bearing 10 and installed
Groove, needle bearing 10 are installed in the mounting groove of needle bearing 10 and keep identical axiality, the head of gyroaxis 12 with gyroaxis 12
There is dust ring 11 between the end face of revolving body 8, dust ring 11 is fixed on gyroaxis 12, and the dust blowing lip of dust ring 11 contradicts back
The end face of swivel 8, dust blowing lip include metal lip 14 and elastic lip 13, and being arranged in for metal lip 14 and the tandem of elastic lip 13 is anti-
On the metal shell of konisphere 11, metal shell is fixed on gyroaxis 12.
The present invention also has implementation below on the basis of the above, continuing with shown in Figure 1,
In further embodiment of the present invention, the inwall of revolving body 8 opens up several sealing ring mounting grooves and an O-shaped sealing
Enclose 9 mounting grooves, sealing ring is installed in sealing ring mounting groove and cylindrical in sealing contact with gyroaxis 12, and O-ring seal 9 is installed on
In the mounting groove of O-ring seal 9.
In further embodiment of the present invention, 12 central axial direction of gyroaxis opens up the U-shaped oil duct 17 of annular, revolving body 8
The first oil duct 15 is opened up between middle each two sealing ring, the corresponding each oil duct opening position of gyroaxis 12 opens up the second oil duct 16, the
One oil duct 15 and the second oil duct 16 communicate, and the second oil duct 16 runs through cylindrical to the annular U-shaped oil duct 17 of gyroaxis 12.
User can according to it is following explanation further insight the present invention characteristic and function,
In the present embodiment, in addition to a kind of operation principle of multichannel small-sized machine center-rotary joint, wherein, work
Principle is as follows,
Small-sized machine center-rotary joint as shown in Figure 1, including revolving body 8 and gyroaxis 12, gyroaxis 12 are installed
In the revolving body 8 and front end circlip 6 is fixed, axial motion when preventing its rotation, bottom have four installation fixing holes and
Some oil duct hydraulic fluid ports, the U-shaped oil duct 17 of annular is processed among it；Brush 4 is fixed on the other end of gyroaxis 12, the rear end of brush 4
It is connected on cover plate 2, whole brush 4 is arranged between cover plate 2 and gyroaxis 12, the transmission for electric signal between getting on and off.
There are several actuator ports and anti-rotational shift fork (not shown) on the shell of revolving body 8, several internal first oil ducts 15 are with returning
Several second oil ducts 16 in rotating shaft 12 are combined into high-low pressure oil duct, and for the transmission for the hydraulic oil that gets on and off, its inner side processes
There are sealing ring 7 and O-ring seal mounting groove, so that forming independent oil duct between each oil duct, inner side both ends of the surface are with needle bearing
Processed on the basis of 10 outer rings, bearing other end elastic circlip 5 is fixed.Dust ring 11 uses the metal dust circle of single-acting,
With two different dust blowing lips, a thin metal lip 14 and an elastic lip 13, two dust blowing lips are in compact metal-back
Tandem arranges in body, and metal dust blowing lip is used for the solid for removing firm adhesion, and elastomeric material dust blowing lip is used to remove children
The small grains of sand, moisture and similar external contaminant；Dust ring 11 is arranged between revolving body 8 and gyroaxis 12, and its is special
Structure can be automatically drained out the foreign matter between revolving body 8 and gyroaxis 12 in rotary course, while can prevent pollutant
Into.
Embodiment two
The structure of swivel coupling in the present embodiment and embodiment one are essentially identical, and difference is that needle bearing can be with
Substituted by other kinds of bearing, gyroaxis and jump ring mounting groove are processed on the basis of bearing inner race；Dust ring can be adopted
The dust ring of dust blowing lip and the metal shell of integration composition made of polyurethane rubber substitutes, installed in revolving body and revolution
Wear-resisting, dust blowing ability is strong between axle, its special structure can be automatically drained out between revolving body and gyroaxis in rotary course
Foreign matter.Also it can reach such as identical technique effect, embodiment and reality in embodiment one by the change of this structure
It is identical to apply example one, will not be described here.
In summary, the present invention by brush carry out engineering machinery get on and off between electric signal transmission, avoid because it is upper,
Getting off in turning course, wire harness is chaotic, distorts, fractures.Replace sliding using needle bearing rolling friction between revolving body and gyroaxis
Dynamic friction, reduce the friction of revolving body and gyroaxis, improve revolution efficiency and center-rotary joint life-span, reduce hydraulic pressure greasy dirt
Dye, furthermore it is ensured that installation axiality, is prevented because bias causes O-ring to damage oil leak.Dust ring uses the metal of single-acting
Dust ring, with two different dust blowing lips, a thin metal lip and an elastic lip, two dust blowing lips are in compact metal
Tandem arranges in housing, and metal dust blowing lip is used for the solid for removing firm adhesion, and elasticity stops material dust blowing lip and is used to remove
The immature grains of sand, moisture and similar external contaminant；In addition, dust ring is arranged between revolving body and gyroaxis, its is special
Structure foreign matter between revolving body and gyroaxis can be automatically drained out in rotary course.
Preferred embodiments of the present invention are the foregoing is only, not thereby limit embodiments of the present invention and protection model
Enclose, to those skilled in the art, should can appreciate that all with made by description of the invention and diagramatic content
Scheme obtained by equivalent substitution and obvious change, should be included in protection scope of the present invention.
Claims (3)
1. a kind of multichannel small-sized machine center-rotary joint, including revolving body (8), gyroaxis (12) and cover plate (2), described
Gyroaxis (12) is removably inserted in the revolving body (8) by circlip (6), and the circlip (6) is gone back on one side
Elastic circlip (5) is arranged with, to prevent the gyroaxis (12) from axial motion, revolving body (8) inwall occurring when rotated
Several sealing rings (7), one end mounting O-shaped sealing ring (9) of revolving body (8) inwall, the lid are installed on axial direction
Plate (2) is fixed on outside the other end of the revolving body (8) by screw (1), the cover plate (2) and the revolving body (8) it
Between install cover plate O-ring (3), it is characterised in that
Brush (4) is installed, between being got on or off the bus by the brush (4) between the cover plate and the gyroaxis (12)
Needle bearing (10) is respectively installed at the both ends of electric signal transmission, the revolving body (8) and the gyroaxis (12) contact portion, described
There is dust ring (11), the dust ring (11) is fixed on described between gyroaxis (12) head and the revolving body (8) end face
On gyroaxis (12), the dust blowing lip of the dust ring (11) contradicts the end face of the revolving body (8), and the dust blowing lip includes metal
Lip (14) and elastic lip (13), the metal lip (14) and the elastic lip (13) tandem are arranged in the dust ring
(11) on metal shell, the metal shell is fixed on the gyroaxis (12)；
There are several actuator ports and anti-rotational shift fork on revolving body (8) shell；
Revolving body (8) inwall opens up several sealing ring mounting grooves and O-ring seal (9) mounting groove, the sealing
Ring is installed in the sealing ring mounting groove and cylindrical in sealing contact with the gyroaxis (12), O-ring seal (9) installation
In in the O-ring seal (9) mounting groove；
The central axial direction of the gyroaxis (12) opens up the U-shaped oil duct (17) of annular, close described in each two in the revolving body (8)
The first oil duct (15) is opened up between seal ring, the corresponding each first oil duct opening position of the gyroaxis (12) opens up the second oil duct
(16), first oil duct (15) and second oil duct (16) communicate, and second oil duct (16) runs through the gyroaxis
(12) the U-shaped oil duct of annular (17).
2. multichannel small-sized machine center-rotary joint according to claim 1, it is characterised in that the revolving body
(8) inwall opens up needle bearing (10) mounting groove, and the needle bearing (10) is installed in the needle bearing (10) mounting groove
And axiality identical with the gyroaxis (12) holding.
3. a kind of method of work of multichannel small-sized machine center-rotary joint, it is characterised in that including claim 1 to 2
Multichannel small-sized machine center-rotary joint described in middle any one, the method for work is as follows,
Hydraulic oil enters the gyroaxis (12) by the U-shaped oil duct of annular (17), and passes through the described first oil according to oil duct
Road (15) and second oil duct (16), high-low pressure oil duct is formed between the revolving body (8) and the gyroaxis (12)；Institute
During stating gyroaxis (12) rotation, the brush (4) realizes the electric signal transmission between getting on or off the bus；Pass through the needle roller axle
Hold (10) and realize rolling friction between the revolving body (8) and the gyroaxis (12)；Institute is removed by the dust ring (11)
State caused foreign matter between revolving body (8) and the gyroaxis (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510148523.5A CN104913138B (en) | 2015-03-31 | 2015-03-31 | A kind of multichannel small-sized machine center-rotary joint and its operation principle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510148523.5A CN104913138B (en) | 2015-03-31 | 2015-03-31 | A kind of multichannel small-sized machine center-rotary joint and its operation principle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104913138A CN104913138A (en) | 2015-09-16 |
| CN104913138B true CN104913138B (en) | 2018-01-05 |
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ID=54082444
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510148523.5A Expired - Fee Related CN104913138B (en) | 2015-03-31 | 2015-03-31 | A kind of multichannel small-sized machine center-rotary joint and its operation principle |
Country Status (1)
| Country | Link |
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| CN (1) | CN104913138B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107420674A (en) * | 2017-05-31 | 2017-12-01 | 中国工程物理研究院总体工程研究所 | High performance multi-channel water swivel joint |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202302486U (en) * | 2011-10-27 | 2012-07-04 | 江阴市长龄机械制造有限公司 | Seven-channel hydraulic rotating connector with electric brush |
| CN202302487U (en) * | 2011-10-27 | 2012-07-04 | 江阴市长龄机械制造有限公司 | Large-rotation-angle rotary connector with electric brush |
| CN203068025U (en) * | 2012-12-29 | 2013-07-17 | 江阴市长龄机械制造有限公司 | Central slewing joint provided with bearing additionally |
| CN103244777A (en) * | 2013-05-14 | 2013-08-14 | 三一重机有限公司 | Central rotary joint and engineering machinery |
-
2015
- 2015-03-31 CN CN201510148523.5A patent/CN104913138B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202302486U (en) * | 2011-10-27 | 2012-07-04 | 江阴市长龄机械制造有限公司 | Seven-channel hydraulic rotating connector with electric brush |
| CN202302487U (en) * | 2011-10-27 | 2012-07-04 | 江阴市长龄机械制造有限公司 | Large-rotation-angle rotary connector with electric brush |
| CN203068025U (en) * | 2012-12-29 | 2013-07-17 | 江阴市长龄机械制造有限公司 | Central slewing joint provided with bearing additionally |
| CN103244777A (en) * | 2013-05-14 | 2013-08-14 | 三一重机有限公司 | Central rotary joint and engineering machinery |
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| Publication number | Publication date |
|---|---|
| CN104913138A (en) | 2015-09-16 |
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Granted publication date: 20180105 Termination date: 20190331 |