CN102661464B - Dual-purpose central rotary joint for hydraulic oil and gas - Google Patents
Dual-purpose central rotary joint for hydraulic oil and gas Download PDFInfo
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- CN102661464B CN102661464B CN201210032007.2A CN201210032007A CN102661464B CN 102661464 B CN102661464 B CN 102661464B CN 201210032007 A CN201210032007 A CN 201210032007A CN 102661464 B CN102661464 B CN 102661464B
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Abstract
A dual-purpose central rotary joint for hydraulic oil and gas belongs to rotary joints used in engineering machinery. The rotary joint is composed of an oil circuit part, a gas circuit part and conductive ring interfaces, and the oil circuit part and the gas circuit part are isolated by two low-pressure oil drainage grooves; thread oil mouths are disposed on both the bottom of a mandrel and the side of a cylinder of the rotary joint, and are connected to the oil circuit and the gas circuit; and the conductive ring interfaces are arranged on the upper end of the rotary joint, and are directly connected to conductive rings. The rotary joint can be used to continuously transport two media (i.e. hydraulic oil and gas) between two mechanisms which perform relative rotational movement with respect to each other; the rotary joint is separated into two parts, including the oil circuit and the gas circuit, by the oil drainage grooves, and the rotary joint comprises the mandrel and the cylinder; and the conductive ring interfaces are arranged on the rotary joint, and can be used for installing the conductive rings with different numbers of channels. The dual-purpose central rotary joint for hydraulic oil and gas has the following advantages: 1. the special operating condition of transporting the hydraulic oil and gas at the same time can be satisfied; and 2. the expandability is good, since the conductive ring interfaces can be used for installing the conductive rings with different numbers of channels.
Description
Technical field
The present invention relates to the swivel joint using in a kind of engineering machinery, particularly the dual-purpose centre revolving joint of a kind of liquid gas.
Technical background
In engineering machinery, swivel joint is used for being communicated with the hydraulic circuit have between the getting on the bus and getting off of relative rotary motion.Common swivel joint generally consists of mandrel and cylindrical shell, and cylindrical shell is tubular structure, and cylindrical shell can rotate around mandrel.This rotary joint structure is relatively simple, a transmission for liquid.
In engineering machinery, there are two counterrotating mechanisms, and while all there is oil hydraulic circuit and gas return path in Liang Ge mechanism, common swivel joint can not satisfy the demands, common swivel joint is to transmit hydraulic oil and gas circuit two media simultaneously, be mainly because the working pressure of hydraulic oil far away higher than gas circuit pressure, and there is certain leakage in swivel joint itself, there is the hydraulic oil of necessarily being pressed to leak in gas circuit, easily damage gas circuit element.
Summary of the invention
The object of the invention is to provide a kind of liquid gas dual-purpose swivel joint, solve the problem that swivel joint can only transmit a kind of liquid medium.
The object of the present invention is achieved like this: this swivel joint consists of oil circuit part, air path part and conductive hoop interface, and oil circuit part and air path part are isolated by two low pressure drain pans; Mandrel bottom surface and cylindrical shell side at swivel joint are equipped with screw thread hydraulic fluid port, are connected with gas circuit with oil circuit; There is conductive hoop interface swivel joint upper end, is directly connected with conductive hoop;
This swivel joint comprises: cylindrical shell, mandrel, mandrel wear-resistant pad, pressing plate wear-resistant pad, pressing plate, connecting plate and block; Mandrel is positioned at cylindrical shell, and a round platform is arranged at mandrel bottom, and cylindrical shell is positioned on round platform, is connected with mandrel wear-resistant pad between mandrel round platform and cylindrical shell; On mandrel, be connected with pressing plate, between pressing plate and mandrel, have pressing plate wear-resistant pad, in pressing plate upper end, have connecting plate to be connected on cylindrical shell; Side at cylindrical shell is connected with block; In the bottom of mandrel, have a plurality of axial bores, have a plurality of radial holes on the sidewall of mandrel, there is a groove at each radial hole place, axial bore and corresponding communicating of radial hole; On cylinder lateral wall, there are a plurality of holes, corresponding the communicating of groove of the hole on described cylinder lateral wall and radial hole on mandrel;
Hole on described cylinder lateral wall has: pore 1a, oilhole 2a, oilhole 3a, oilhole 4a, oilhole 5a, oilhole 6a, oilhole 7a, oilhole 8a, oilhole 9a, oilhole 10a, oilhole 11a, oilhole 12a;
The axial bore of described mandrel bottom has: pore 1b, oilhole 2b, oilhole 3 b, oilhole 4 b, oilhole 5 b, oilhole 6 b, oilhole 7 b, oilhole 8 b, oilhole 9 b, oilhole 10 b, oilhole 11 b, oilhole 12 b;
Described groove has: groove 1c, upper low pressure drain pan, groove 3c, groove 4c, groove 5c, groove 6c, groove 7c, groove 8c, groove 9c, groove 10c, groove 11c, groove 12c, groove 13c and lower low pressure drain pan;
The top of swivel joint is connected with conductive hoop by connecting plate, the pore 1a of swivel joint cylindrical shell side, oilhole 2a, oilhole 3a, oilhole 4a, oilhole 5a, oilhole 6a, oilhole 7a, oilhole 8a, oilhole 9a, oilhole 10a, oilhole 11a, oilhole 12a is respectively by the groove 1c on mandrel, upper low pressure drain pan, groove 3c, groove 4c, groove 5c, groove 6c, groove 7c, groove 8c, groove 9c, groove 10c, groove 11c, the pore 1b of groove 12c and mandrel bottom surface, oilhole 2b, oilhole 3 b, oilhole 4 b, oilhole 5 b, oilhole 6 b, oilhole 7 b, oilhole 8 b, oilhole 9 b, oilhole 10 b, oilhole 11 b, oilhole 12 b communicate, lower low pressure drain pan, groove 13c communicates with oilhole 13b.
Beneficial effect, owing to having adopted such scheme, in order to realize the function of transmitting hydraulic oil and gas simultaneously, different operating characteristic for hydraulic oil and gas, adopted in the present invention isolated design, by upper low pressure drain pan and lower low pressure drain pan, whole swivel joint has been isolated into oil circuit and two parts of gas circuit.Mandrel bottom surface and cylindrical shell side at swivel joint are equipped with screw thread hydraulic fluid port, for connecting the gentle road of hydraulic pressure pipeline.Working pressure for hydraulic oil and gas circuit is different, this swivel joint is provided with twice low pressure drain pan between oil circuit and the circular groove of gas circuit, the upper low pressure drain pan of close oil circuit, for the leakage of the hydraulic element of getting on the bus, is used for the internal leakage of swivel joint near the lower low pressure drain pan of gas circuit.By this twice low pressure drain pan, high-pressure oil passage and low pressure gas circuit have been isolated thoroughly.The seal element that swivel joint has been used hydraulic oil medium to use, by rational Spielpassung, has guaranteed that hydraulic circuit leakage rate when work is very low.Leak oil by the direct oil sump tank in hole of mandrel bottom, guaranteed the normal operation of gas circuit.In order to take into account the demand on electric, on swivel joint, leave conductive hoop interface, the conductive hoop of any way can be installed.Solve the problem that swivel joint can only transmit a kind of liquid medium, reached object of the present invention.
Advantage: 1. can meet the special operation condition that simultaneously transmits hydraulic oil and gas circuit; 2. extensibility is strong, and the conductive hoop of any way can be installed.
Accompanying drawing explanation
Fig. 1 is structural drawing of the present invention.
Fig. 2 is barrel hole structure figure of the present invention.
Fig. 3 is mandrel bottom hole structural drawing of the present invention.
In figure, 1, cylindrical shell; 2, mandrel; 3, mandrel wear-resistant pad; 4, pressing plate wear-resistant pad; 5, pressing plate; 6, connecting plate; 7, the block on cylinder assembly; 1-1, pore 1a; 1-2, oilhole 2a; 1-3, oilhole 3a; 1-4, oilhole 4a; 1-5, oilhole 5a; 1-6, oilhole 6a; 1-7, oilhole 7a; 1-8, oilhole 8a; 1-9, oilhole 9a; 1-10, oilhole 10a; 1-11, oilhole 11a; 1-12, oilhole 12a; 2-1, pore 1b; 2-2, oilhole 2b; 2-3, oilhole 3b; 2-4, oilhole 4b; 2-5, oilhole 5b; 2-6, oilhole 6b; 2-7, oilhole 7b; 2-8, oilhole 8b; 2-9, oilhole 9b; 2-10, oilhole 10b; 2-11, oilhole 11b; 2-12, oilhole 12b; 3-1, groove 1c; 3-2, upper low pressure drain pan; 3-3, groove 3c; 3-4, groove 4c; 3-5, groove 5c; 3-6, groove 6c; 3-7, groove 7c; 3-8, groove 8c; 3-9, groove 9c; 3-10, groove 10c; 3-11, groove 11c; 3-12, groove 12c; 3-13 groove 13c; 3-13 ', lower low pressure drain pan.
Embodiment
Embodiment 1: this swivel joint consists of oil circuit part, air path part and conductive hoop interface, and oil circuit part and air path part are isolated by two low pressure drain pans; Mandrel bottom surface and cylindrical shell side at swivel joint are equipped with screw thread hydraulic fluid port, are connected with gas circuit with oil circuit; There is conductive hoop interface swivel joint upper end, is directly connected with conductive hoop;
This swivel joint comprises: cylindrical shell 1, mandrel 2, mandrel wear-resistant pad 3, pressing plate wear-resistant pad 4, pressing plate 5, connecting plate 6, block 7, conductive hoop 8; Mandrel 2 is positioned at cylindrical shell 1, and a round platform is arranged at mandrel 1 bottom, and cylindrical shell 1 is positioned on round platform, between mandrel 2 round platforms and cylindrical shell 1, is connected with mandrel wear-resistant pad 3; On mandrel 2, be connected with pressing plate 5, between pressing plate 5 and mandrel 2, have pressing plate wear-resistant pad 4, in pressing plate 5 upper ends, have connecting plate 6 to be connected on cylindrical shell 1; In the side of cylindrical shell 1, be connected with block 7; Conductive hoop 8 is located by hole on pressing plate 5, by screw, is installed on connecting plate 6; In the bottom of mandrel, have a plurality of axial bores, have a plurality of radial holes on the sidewall of mandrel, there is a groove at each radial hole place, axial bore and corresponding communicating of radial hole; On the sidewall of cylindrical shell, there are a plurality of holes, corresponding the communicating of groove of described hole and radial hole on mandrel.
Hole on described cylinder lateral wall has: pore 1a 1-1, oilhole 2a 1-2, oilhole 3a 1-3, oilhole 4a 1-4, oilhole 5a 1-5, oilhole 6a 1-6, oilhole 7a 1-7, oilhole 8a 1-8, oilhole 9a 1-9, oilhole 10a 1-10, oilhole 11a 1-11 and oilhole 12a 1-12;
The axial bore of described mandrel bottom has: pore 1b 2-1, oilhole 2b 2-2, oilhole 3b 2-3, oilhole 4b 2-4, oilhole 5b 2-5, oilhole 6b 2-6, oilhole 7b 2-7, oilhole 8b 2-8, oilhole 9b 2-9, oilhole 10b 2-10, oilhole 11b 2-11 and oilhole 12b 2-12;
Described groove has: groove 1c 3-1, upper low pressure drain pan 3-2, groove 3c 3-3, groove 4c 3-4, groove 5c 3-5, groove 6c 3-6, groove 7c 3-7, groove 8c 3-8, groove 9c 3-9, groove 10c 3-10, groove 11c 3-11, groove 12c 3-12, groove 13c 3-13 and lower low pressure drain pan 3-13 ';
The top of swivel joint is connected with conductive hoop by connecting plate, the pore 1a 1-1 of swivel joint cylindrical shell side, oilhole 2a 1-2, oilhole 3a 1-3, oilhole 4a 1-4, oilhole 5a 1-5, oilhole 6a 1-6, oilhole 7a 1-7, oilhole 8a 1-8, oilhole 9a 1-9, oilhole 10a 1-10, oilhole 11a 1-11, oilhole 12a 1-12 is respectively by the groove 1c 3-1 on mandrel, upper low pressure drain pan 3-2, groove 3c 3-3, groove 4c 3-4, groove 5c 3-5, groove 6c 3-6, groove 7c 3-7, groove 8c 3-8, groove 9c 3-9, groove 10c 3-10, groove 11c 3-11, the pore 1b 2-1 of groove 12c 3-12 and mandrel bottom surface, oilhole 2b 2-2, oilhole 3b 2-3, oilhole 4b 2-4, oilhole 5b 2-5, oilhole 6b 2-6, oilhole 7b 2-7, oilhole 8b 2-8, oilhole 9b 2-9, oilhole 10b 2-10, oilhole 11b 2-11, oilhole 12b 2-12 communicates, lower low pressure drain pan 3-13 ', groove 13c 3-13 communicates with oilhole 13b.
Oilhole 13 b, are the drain tap of swivel joint self, there is no oilhole connection corresponding to it on cylindrical shell.
Swivel joint is mainly comprised of cylindrical shell 1, mandrel 2, mandrel wear-resistant pad 3, pressing plate wear-resistant pad 4, pressing plate 5, connecting plate 6 and block 7.Mandrel 1 with screw threads conversion adapter during installation is fixed in Yi Ge mechanism, and the hydraulic tube in this mechanism and tracheae are connected to oilhole corresponding to swivel joint mandrel bottom surface.Then with blocking the block 7 on swivel joint cylindrical shell with shift fork in another mechanism, the oil pipe in this mechanism and tracheae are connected to the oilhole of swivel joint cylindrical shell side.So can realize at two and inter-agencyly in relative rotation transmit hydraulic oil and gas simultaneously.
In order to realize the function of transmitting hydraulic oil and gas simultaneously, the different operating characteristic for hydraulic oil and gas, has adopted isolated structure in the present invention, by low pressure drain pan, whole swivel joint is isolated into oil circuit and two parts of gas circuit.Mandrel bottom surface and cylindrical shell side at swivel joint are equipped with screw thread hydraulic fluid port, for connecting the gentle road of hydraulic pressure pipeline.Working pressure for hydraulic oil and gas circuit is different, this swivel joint is provided with twice low pressure drain pan between oil circuit and the circular groove of gas circuit, near the low pressure drain pan of oil circuit, for the leakage of the hydraulic element of getting on the bus, near the low pressure drain pan of gas circuit, be used for the internal leakage of swivel joint.By this twice low pressure drain pan, high-pressure oil passage and low pressure gas circuit have been isolated thoroughly.The seal element that swivel joint has been used hydraulic oil medium to use, by rational Spielpassung, has guaranteed that hydraulic circuit leakage rate when work is very low.Leak oil by the direct oil sump tank in hole of mandrel bottom, just protected the normal operation of gas circuit.In order to take into account the demand on electric, on swivel joint, leave conductive hoop interface, the conductive hoop of any way can be installed.
Claims (1)
1. the dual-purpose centre revolving joint of liquid gas, is characterized in that: this swivel joint consists of oil circuit part, air path part and conductive hoop interface, and oil circuit part and air path part are isolated by two low pressure drain pans; Mandrel bottom surface and cylindrical shell side at swivel joint are equipped with screw thread hydraulic fluid port, are connected with gas circuit with oil circuit; There is conductive hoop interface swivel joint upper end, is directly connected with conductive hoop;
This swivel joint comprises: cylindrical shell, mandrel, mandrel wear-resistant pad, pressing plate wear-resistant pad, pressing plate, connecting plate and block; Mandrel is positioned at cylindrical shell, and a round platform is arranged at mandrel bottom, and cylindrical shell is positioned on round platform, is connected with mandrel wear-resistant pad between mandrel round platform and cylindrical shell; On mandrel, be connected with pressing plate, between pressing plate and mandrel, have pressing plate wear-resistant pad, in pressing plate upper end, have connecting plate to be connected on cylindrical shell; Side at cylindrical shell is connected with block; In the bottom of mandrel, have a plurality of axial bores, have a plurality of radial holes on the sidewall of mandrel, there is a groove at each radial hole place, axial bore and corresponding communicating of radial hole; On cylinder lateral wall, there are a plurality of holes, corresponding the communicating of groove of the hole on described cylinder lateral wall and radial hole on mandrel;
Hole on described cylinder lateral wall has: pore 1a, oilhole 2a, oilhole 3a, oilhole 4a, oilhole 5a, oilhole 6a, oilhole 7a, oilhole 8a, oilhole 9a, oilhole 10a, oilhole 11a, oilhole 12a;
The axial bore of described mandrel bottom has: pore 1b, oilhole 2b, oilhole 3 b, oilhole 4 b, oilhole 5 b, oilhole 6 b, oilhole 7 b, oilhole 8 b, oilhole 9 b, oilhole 10 b, oilhole 11 b, oilhole 12 b;
Described groove has: groove 1c, upper low pressure drain pan, groove 3c, groove 4c, groove 5c, groove 6c, groove 7c, groove 8c, groove 9c, groove 10c, groove 11c, groove 12c, groove 13c and lower low pressure drain pan;
The top of swivel joint is connected with conductive hoop by connecting plate, the pore 1a of swivel joint cylindrical shell side, oilhole 2a, oilhole 3a, oilhole 4a, oilhole 5a, oilhole 6a, oilhole 7a, oilhole 8a, oilhole 9a, oilhole 10a, oilhole 11a, oilhole 12a is respectively by the groove 1c on mandrel, upper low pressure drain pan, groove 3c, groove 4c, groove 5c, groove 6c, groove 7c, groove 8c, groove 9c, groove 10c, groove 11c, the pore 1b of groove 12c and mandrel bottom surface, oilhole 2b, oilhole 3 b, oilhole 4 b, oilhole 5 b, oilhole 6 b, oilhole 7 b, oilhole 8 b, oilhole 9 b, oilhole 10 b, oilhole 11 b, oilhole 12 b communicate, lower low pressure drain pan, groove 13c communicates with oilhole 13b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210032007.2A CN102661464B (en) | 2012-02-14 | 2012-02-14 | Dual-purpose central rotary joint for hydraulic oil and gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210032007.2A CN102661464B (en) | 2012-02-14 | 2012-02-14 | Dual-purpose central rotary joint for hydraulic oil and gas |
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| Publication Number | Publication Date |
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| CN102661464A CN102661464A (en) | 2012-09-12 |
| CN102661464B true CN102661464B (en) | 2014-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210032007.2A Active CN102661464B (en) | 2012-02-14 | 2012-02-14 | Dual-purpose central rotary joint for hydraulic oil and gas |
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| CN111981229A (en) * | 2020-08-31 | 2020-11-24 | 湖南三一中型起重机械有限公司 | Central swivel joint and engineering machinery |
| CN114645987A (en) * | 2022-04-07 | 2022-06-21 | 中国工程物理研究院材料研究所 | Rotary dynamic seal connecting structure for zero positioning system |
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| CN2750154Y (en) * | 2004-06-14 | 2006-01-04 | 孙珏 | Multiple-pass swivel coupling |
| CN201193342Y (en) * | 2008-05-14 | 2009-02-11 | 江阴市长龄液压机具厂 | Hydraulic central revolving body for 5.5-7T |
| CN201706107U (en) * | 2010-06-10 | 2011-01-12 | 江苏鼎晟液压有限公司 | Multifunctional centre revolving joint |
| CN202082530U (en) * | 2011-05-11 | 2011-12-21 | 江阴长龄液压科技有限公司 | Multi-channel revolving joint |
| CN202469326U (en) * | 2012-02-14 | 2012-10-03 | 徐州徐工随车起重机有限公司 | Hydraulic/pneumatic central rotary joint |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2306588B (en) * | 1995-11-01 | 1999-06-30 | Framo Eng As | Sealing arrangement |
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2012
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2750154Y (en) * | 2004-06-14 | 2006-01-04 | 孙珏 | Multiple-pass swivel coupling |
| CN201193342Y (en) * | 2008-05-14 | 2009-02-11 | 江阴市长龄液压机具厂 | Hydraulic central revolving body for 5.5-7T |
| CN201706107U (en) * | 2010-06-10 | 2011-01-12 | 江苏鼎晟液压有限公司 | Multifunctional centre revolving joint |
| CN202082530U (en) * | 2011-05-11 | 2011-12-21 | 江阴长龄液压科技有限公司 | Multi-channel revolving joint |
| CN202469326U (en) * | 2012-02-14 | 2012-10-03 | 徐州徐工随车起重机有限公司 | Hydraulic/pneumatic central rotary joint |
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Inventor after: Cheng Lei Inventor after: Han Wenchao Inventor after: Chen Zhiwei Inventor after: Wang Ziming Inventor after: Zhao Longhui Inventor after: Man Jun Inventor after: Xiao Gang Inventor before: Han Wenchao Inventor before: Zhao Longhui Inventor before: Kong Fanxiang Inventor before: Kong Deqiang Inventor before: Ning Jiping Inventor before: Xiao Gang |
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Free format text: CORRECT: INVENTOR; FROM: HAN WENCHAO ZHAO LONGHUI KONG FANXIANG KONG DEQIANG NING JIPING XIAO GANG TO: CHENG LEI HAN WENCHAO CHEN ZHIWEI WANG ZIMING ZHAO LONGHUI MAN JUN XIAO GANG |
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